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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No.   )

Filed by the Registrantý

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Preliminary Proxy Statement

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Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

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Definitive Proxy Statement

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Soliciting Material under §240.14a-12


Filed by the Registrant
CLEAN ENERGY FUELS CORP.

(Name of Registrant as Specified In Its Charter)


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Filed by a Party other than the Registrant
Check the appropriate box:

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Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

Definitive Proxy Statement

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CLEAN ENERGY FUELS CORP.
(Name of Registrant as Specified in its Charter)
(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)
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CLEAN ENERGY FUELS CORP.
4675 MacArthur Court, Suite 800

Newport Beach, CACalifornia 92660

April  11, 2016

4, 2024

Dear Stockholder:

Stockholder,

You are cordially invited to attend the annual meeting of stockholders ("(“Annual Meeting"Meeting”) of Clean Energy Fuels Corp. (the "Company", "we", "us"“Company,” “Clean Energy,” “we,” “us” or "our"“our”) to be held at The Island Hotel at 690 Newport Center Drive, Newport Beach, California 92660, on Thursday, May 26, 2016,16, 2024, at 9:8:00 a.m. Pacific Time.

The attachedAnnual Meeting will be a virtual meeting conducted via live audio webcast that can be accessed by visiting www.virtualshareholdermeeting.com/CLNE2024. At this website, you will be able to listen to the Annual Meeting live, submit questions for our management, directors and representatives of our independent registered public accounting firm in attendance, and submit your vote while the Annual Meeting is being held.

To be a leader in any field, you must always find new ways to innovate and inspire.
Clean Energy strives to do just that.
During the Company’s early years, we worked with municipalities to help clean the air by transitioning their fleets of buses, airport support vehicles, and waste collection trucks from dirty diesel to cleaner burning natural gas. The results can be seen in bluer skies around the country.
In 2013, we pioneered a new type of fuel, renewable natural gas (“RNG”), that reduces smog-forming tailpipe emissions and greenhouse gas emissions, providing the transportation industry with an immediate solution to address climate change. Today, virtually all the fuel that we sell at our stations is RNG, allowing our customers’ fleets to dramatically lower their carbon footprint.
We believe so strongly in the sustainable power of RNG, that we made the decision several years ago to invest directly in its production. By partnering with dairy owners, we can help mitigate the critical problem of fugitive methane produced from cow manure, one of the most potent greenhouse gases. In 2023, we reached an important milestone by completing our first dairy RNG production facility that captures methane and turns it into a valuable transportation fuel, all while providing additional benefits to the dairy’s operations, such as organic nutrients, reduced odor, and improved water quality.
We feel very fortunate at Clean Energy to be in the business of helping our customers meet their sustainability goals.
As a longtime LA Dodgers fan, let me say that we were thrown a curveball at the beginning of 2023 that would make Clayton Kershaw envious. Due to extraordinary circumstances, including a protracted cold spell in California, natural gas prices shot through the roof in the state, which is our largest market, increasing 10-fold at one point. We were able to pass some of the expense to our customers, but we had to absorb much of it, which impacted our bottom line for the first two quarters.
Thankfully the fundamentals of our business are strong, and we were able to bounce back with a solid second half of the year. Our overall financial results for 2023 might not be what we had hoped going into it, but we believe the wind is to our backs and we have considerable momentum going into 2024 and beyond.
One of the most significant developments that began to unfold last year was the introduction of several Cummins X15N test engines. This is crucial for the alternative fuels heavy-duty vehicle market because it’s the first 15-liter engine to operate on RNG, capable of delivering the power, torque, and range that many heavy-duty trucks require. Some of the most well-known fleets in the country, like Walmart, Werner, UPS, Amazon, and Knight Transportation, began to put the X15N to the test, driving it over the most difficult terrains and challenging routes. I’m pleased to say that the reviews have been extremely favorable.
Commercialization of the X15N engine will begin later in 2024, but in my many years of partnering with Cummins on their natural gas engines, I’ve never heard the world-class engine manufacturer be so bullish about the potential of one of their new products. The heavy-duty truck market is desperately searching for an alternative to diesel that can meet their emissions reduction goals, yet have been disappointed by the



cost, availability, and lack of necessary fueling/charging associated with other technologies including electric and hydrogen. We strongly believe the X15N, fueled by RNG, is the answer.
The timing of this new engine couldn’t be better. Over the last several years, Clean Energy has significantly expanded its fueling footprint in prime locations for heavy-duty trucking. By the end of 2023, we completed the construction of 18 of the 19 stations contracted by Amazon for their new nationwide heavy-duty fleet. The beauty of these stations is that we have an anchor customer in Amazon to pay for them, while being strategically located and open to other fleets.
Another market that is eagerly awaiting the new Cummins X15N is Canada. And once again, Clean Energy is well-posed to take advantage of this important transportation market. In April of last year, we announced an exciting strategic partnership with Tourmaline, Canada’s leading energy company, to construct up to 20 fueling stations, first across the western part of the country, with the potential of expanding east. With its long stretches between cities and mountainous terrain, heavy-duty trucks in Canada need a larger engine. The X15N will be a perfect fit for this environmentally conscious market.
The over-the-road market is not the only one making the switch to cleaner burning fuels. Our relationship with Pasha, the shipping company that services the Hawaiian market, continues to expand. We are now providing liquified natural gas (“LNG”) from our plant in Boron, California for three Pasha container ships that make their way from the Ports of Long Beach and Oakland to Honolulu. When running at full capacity, these large ships use an average of 460,000 gallons of LNG every week and are reducing their diesel particulate matter and sulfur oxide by 99%, their nitrogen oxides by 90%, and carbon dioxide by 25% compared to traditional shipping fuels.
There’s much more to be optimistic about Clean Energy’s future. But I will wrap up by emphasizing that we are extremely well positioned to continue to be the leader in the transitioning energy market. We strengthened our balance sheet at the end of 2023 with a $300 million secured term loan from Stonepeak, a leading infrastructure firm, and can draw an additional $100 million. We believe the investments we have made both in the upstream and downstream RNG markets will keep us ahead of any competitor. And most of all, we have the best team in the business of whom I couldn’t be prouder.
We are pleased to take advantage of laws and rules that allow issuers to make use of the Internet in conducting a meeting of stockholders, as well as in furnishing proxy materials. As a result, we will not only host the Annual Meeting virtually on the Internet, but we will also furnish the proxy materials for the Annual Meeting to our stockholders on the Internet. We believe this use of the Internet meaningfully lowers our costs, increases efficiencies and helps reduce the environmental impact of the Annual Meeting, while permitting and encouraging increased stockholder attendance and engagement.
The accompanying notice of Annual Meeting and proxy statementProxy Statement include the agenda for the Annual Meeting, explain the matters that will be discussed and voted on at the Annual Meeting and provide generalcertain other information about our Company.

        For the Annual Meeting, we are pleased to take advantage of the Securities & Exchange Commission rules that allow issuers to furnish proxy materials to their stockholders on the Internet. We believe these rules allow us to provide you with the information you need while lowering our printing and delivery costs and reducing the environmental impact of the Annual Meeting.

company.

Your vote is very important. Pleaseimportant, and we urge you to vote as promptly as possible. Thank you for supporting our Company.

Sincerely,
[MISSING IMAGE: sg_andrewlittlefair-bw.jpg]
ANDREW J. LITTLEFAIR
President & Chief Executive Officer
Sincerely,




GRAPHIC
MITCHELL W. PRATT
Corporate Secretary




CLEAN ENERGY FUELS CORP.
4675 MacArthur Court, Suite 800
Newport Beach, CACalifornia 92660



NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

May 26, 2016



16, 2024

The annual meeting of stockholders ("(“Annual Meeting"Meeting”) of Clean Energy Fuels Corp. (the "Company", "we", "us"“Company,” “we,” “us” or "our"“our”) will be held at The Island Hotel at 690 Newport Center Drive, Newport Beach, California 92660, on Thursday, May 26, 2016,16, 2024, at 9:8:00 a.m. Pacific Time via live audio webcast that can be accessed by visiting www.virtualshareholdermeeting.com/CLNE2024, for the following purposes:

1.

To elect nine directors;

directors to the Board of Directors;
2.

To ratify the appointment of KPMG LLP as our independent registered public accounting firm for theour fiscal year ending December 31, 2016;

2024;
3.

To approve, on an advisory, non-binding basis, the Clean Energy Fuels Corp. 2016compensation of our named executive officers;
4.
To approve our 2024 Performance Incentive Plan; and

4.
5.
To transact any other business that may properly come before the Annual Meeting or any adjournment or postponement of the Annual Meeting.

The foregoing items of business are more fully described in the proxy statement included withProxy Statement that accompanies this notice.

The Company'sCompany’s Board of Directors has fixed the close of business on April 4, 2016March 22, 2024 as the record date for the determination of stockholders entitled to notice of and to vote at the Annual Meeting and at any adjournment or postponement thereof. A list of stockholders entitled to vote at the Annual Meeting will be available for inspection by any stockholder for any purpose germane to the Annual Meeting at our principal executive offices during normal business hours for a period of 10 days prior tobefore the Annual Meeting.

The list of stockholders may also be accessed during the virtual Annual Meeting at
www.virtualshareholdermeeting.com/CLNE2024 by using the control number on your proxy card, voting instruction form or Notice of Internet Availability.

Even if you plan to attend the Annual Meeting, you are encouraged to vote on the Internet, by telephone or by mail before the Annual Meeting using the instructions provided in the accompanying proxy materials to ensure that your vote will be counted. If you submit your proxy or voting instructions and then decide to attend the Annual Meeting, you may still vote your shares during the Annual Meeting.
By order of the Board of Directors,
[MISSING IMAGE: sg_jameswsytsma-bw.jpg]




GRAPHIC
Dated: April 11, 20164, 2024MITCHELLJAMES W. PRATT
SYTSMA

Corporate Secretary




CLEAN ENERGY FUELS CORP.
4675 MacArthur Court, Suite 800

Newport Beach, CACalifornia 92660



2016

2024 PROXY STATEMENT



General Information

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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS
This Proxy Statement includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Forward-looking statements are statements other than historical facts and relate to future events or circumstances or the Company’s future performance, and they are based on the Company’s current assumptions, expectations and beliefs concerning future developments and their potential effect on the Company and its business. Forward-looking statements included herein include but are not limited to: statements about the benefits of RNG, expectations regarding the Cummins X15N, our ability to increase our customer base and the ability of our customers to achieve their sustainability goals, our sustainability and safety goals, our diversity and inclusion efforts, statements regarding the Company’s position as a leading renewable energy company, our expectations for our growth in 2024 and beyond and our expectations regarding renewable vehicle fuels. Actual results, performance or achievements and the timing of events could differ materially from those anticipated in or implied by these forward-looking statements as a result of many factors, including, among others: the direct and indirect impact of the COVID-19 pandemic; the willingness of fleets and other consumers to adopt natural gas as a vehicle fuel, and the rate and level of any such adoption; our ability to capture a substantial share of the market for alternative vehicle fuels and vehicle fuels generally and otherwise compete successfully in these markets; the potential adoption of government policies or programs or increased publicity or popular sentiment in favor of other vehicle fuels; the market’s perception of the benefits of RNG and conventional natural gas relative to other alternative vehicle fuels; natural gas vehicle and engine cost, fuel usage, availability, quality, safety, convenience, design, performance and residual value, as well as operator perception with respect to these factors, in general and in our key customer markets, including heavy-duty trucking; our ability to further develop and manage our RNG business, including its ability to procure adequate supplies of RNG and generate revenues from sales of such RNG; our and our suppliers’ ability to successfully develop and operate projects and produce expected volumes of RNG; the potential commercial viability of livestock waste and dairy farm projects to produce RNG; our history of net losses and the possibility that we could incur additional net losses in the future; our and our partners’ ability to acquire, finance, construct and develop other commercial projects; our ability to invest in hydrogen stations or modify our fueling stations to reform our RNG to fuel hydrogen and charge electric vehicles; our ability to realize the expected benefits from the commercial arrangement with Amazon and related transactions; the future supply, demand, use and prices of crude oil, gasoline, diesel, natural gas, and other vehicle fuels, including overall levels of and volatility in these factors; changes in the competitive environment in which we operate, including potentially increasing competition in the market for vehicle fuels generally; our ability to manage and increase our business of transporting and selling CNG for non-vehicle purposes via virtual natural gas pipelines and interconnects, as well as our station design and construction activities; construction, permitting and other factors that could cause delays or other problems at station construction projects; our ability to execute and realize the intended benefits of any acquisitions, divestitures, investments or other strategic relationships or transactions; the future availability of and our access to additional capital, which may include debt or equity financing, in the amounts and at the times needed to fund growth in our business and the repayment of our debt obligations (whether at or before their due dates) or other expenditures, as well as the terms and other effects of any such capital raising transaction; our ability to generate sufficient cash flows to repay our debt obligations as they come due; the availability of environmental, tax and other government legislation, regulations, programs and incentives that promote natural gas, such as AFTC, or other alternatives as a vehicle fuel, including long-standing support for gasoline- and diesel-powered vehicles and growing support for electric and hydrogen-powered vehicles that could result in programs or incentives that favor these or other vehicles or vehicle fuels over natural gas; our ability to comply with various registration and regulatory requirements related to its RNG projects; the effect of, or potential for changes to greenhouse gas emissions requirements or other environmental regulations applicable to vehicles powered by gasoline, diesel, natural gas or other vehicle fuels and crude oil and natural gas fueling, drilling, production, transportation or use; our ability to manage the safety and environmental risks inherent in its operations; our compliance with all applicable government regulations; the impact of the foregoing on the trading price of the our common stock; and general political, regulatory, economic and market conditions; and the other risks and uncertainties set forth under Item 1A, Risk Factors in our Annual Report on Form 10-K for the year ended December 31, 2023 that we filed with the Securities and Exchange Commission and that accompanies this Proxy Statement, as such risk factors may be amended, supplemented or superseded from time to time by other reports we file with the Securities and

ii


Exchange Commission. We encourage you to carefully consider these risks and uncertainties. The forward-looking statements made in this Proxy Statement speak only as of the date of Proxy Statement and we undertake no obligation to update publicly such forward-looking statements to reflect subsequent events or circumstances, except as otherwise required by law.
WEBSITE REFERENCES
Throughout this Proxy Statement, we make references to additional information available on our corporate website at www.cleanenergyfuels.com. References to our website are provided for convenience only and the content on our website does not constitute a part of this Proxy Statement.

iii


CLEAN ENERGY FUELS CORP.
4675 MacArthur Court, Suite 800
Newport Beach, California 92660
2024 PROXY STATEMENT
GENERAL INFORMATION
The board of directors ("Board"(“Board”) of Clean Energy Fuels Corp., a Delaware corporation (the "Company", "we", "us"“Company,” “we,” “us” or "our"“our”), is providing this proxy statement ("Proxy Statement"Statement (“Proxy Statement”) and all other proxy materials to you in connection with the solicitation of proxies for use at our 20162024 annual meeting of stockholders ("(“Annual Meeting"Meeting”). The Annual Meeting will be held at The Island Hotel at 690 Newport Center Drive, Newport Beach, California 92660, on Thursday, May 26, 2016,16, 2024, at 9:8:00 a.m. Pacific Time ("PT"(“PT”), via live audio webcast that can be accessed by visiting www.virtualshareholdermeeting.com/CLNE2024 for the purposes stated in this Proxy Statement. In addition to any other business that may properly come before the Annual Meeting or at any adjournment or postponement thereof, stockholders are being asked to vote at the Annual Meeting on the following four proposals:
Proposal 1.
The election of nine directors to the Board.
Proposal 2.
The ratification of the appointment of KPMG LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2024.
Proposal 3.
The approval, on an advisory, non-binding basis, of the purposes stated herein. compensation of our named executive officers, as disclosed in this Proxy Statement in accordance with the compensation disclosure rules of the Securities and Exchange Commission (“SEC”).
Proposal 4.
The approval of our 2024 Performance Incentive Plan.
This Proxy Statement summarizes the information that you need to know in order to vote on these proposals in an informed manner.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS
The Notice of Annual Meeting, Proxy Statement and our 2023 Annual Report on Form 10-K (“Annual Report”) are available at www.proxyvote.com. You are encouraged to access and review all of the important information contained in our proxy materials before voting. Copies of these proxy materials are also available in the Investors — Annual Reports and Proxies section of our website at https://investors.cleanenergyfuels.com/annual-reports.
Use of the Internet
Pursuant to rules adopted by the Securities and Exchange Commission ("SEC"),SEC, we have elected to provide access to our proxy materials for the Annual Meeting, including this Proxy Statement and our Annual Report, on the Internet. Accordingly, on or about April  4, 2024, we are sendingmailing a Notice of Internet Availability of Proxy Materials ("Notice"(“Notice”) to all of the Company'sCompany’s stockholders of record who have not previously elected an alternative delivery method, while brokers, banks and other nominees who hold shares on behalf of beneficial owners as of the record date for the Annual Meeting. All stockholders will have the abilitybe sending their own similar Notice to beneficial owners. The Notice will include instructions on how you may access the proxy materials onfor the website referred to below and in the Notice, or may requestAnnual Meeting at www.proxyvote.com. For stockholders who have previously elected to receive a printed setcopies of the proxy materials. The Company'smaterials by mail or e-mail, we will be sending the Annual Report, this Proxy Statement and a proxy materials are available at the following website:http://www.proxyvote.com, and instructionscard by that method on how to accessor about April  4, 2024. Stockholders who receive a Notice will not receive printed copies of the proxy materials for the Annual Meeting unless they request them, in which case printed copies of the proxy materials and a paper proxy card will be provided at no charge. Instructions on this website orhow to request a printed copy of the proxy materials by mail or electronically, including an option to request paper copies on an ongoing basis, may be found in the Notice. In addition, stockholders may submit a requestNotice and on the website referred to receive the Company's proxy materials in printed form by mail or electronically by e-mail on an ongoing basis until the one-year anniversary of the date of the Annual Meeting, pursuant to the instructions provided in the Notice. We encourage you to take advantage of the availability of the Company'sour proxy materials on the Internet in order to lower our printing and delivery costs and help reduce the environmental impact of the Annual Meeting.

Voting Rights


1


Virtual Annual Meeting
We will be holding this year’s Annual Meeting virtually on the Internet. No physical meeting will be held. Stockholders who attend the Annual Meeting virtually will be able to listen to the meeting live and submit their vote while the Annual Meeting is being held, and will also be able to submit, either anonymously or identified by name, questions or comments for our management, directors and representatives of our independent registered public accounting firm in attendance at the meeting. This functionality provides our stockholders with opportunities for participation and engagement at the Annual Meeting that are comparable to those that would be available at an in-person meeting.
During the Annual Meeting, we will answer as many stockholder-submitted questions as time permits, other than questions that are irrelevant to the purpose of the Annual Meeting or our business or that contain inappropriate or derogatory references.
Stockholders who choose to attend the Annual Meeting will do so by accessing a live audio webcast of the Annual Meeting via the Internet at www.virtualshareholdermeeting.com/CLNE2024. Please see “Attending the Virtual Annual Meeting” below for more information.
Record Date and Outstanding Shares

        We will mail the Notice on or about April 15, 2016 to all stockholders of record that are entitled to vote at the Annual Meeting. Only

All stockholders that owned shares of our common stock at the close of business on April 4, 2016,March 22, 2024 (the “Record Date”), the date which has been fixed by the Board as the record date, are entitled to vote at the Annual Meeting.
On the record date, 100,432,328Record Date, 223,263,055 shares of our common stock were outstanding.

Voting Matters
Voting Rights
Each share of our common stock that you own entitles youthe owner of the share to one vote on all matters to be voted uponon at the Annual Meeting. The proxy card indicates the number of shares of our common stock that you own.
Quorum Requirement
We will have the required quorum to conduct the business of the Annual Meeting if holders as of the Record Date representing a majority of the outstanding shares of our common stock as of the record dateentitled to vote are present in person or represented by proxy at the Annual Meeting. Abstentions and broker non-votes discussed below,(discussed under “Effect of Not Providing Voting Instructions; Broker Non-Votes” below) will be counted as present for purposes of determining whetherthe presence of a quorum is present at the Annual Meeting.

        Generally, broker non-votes occur when

Effect of Not Providing Voting Instructions; Broker Non-Votes
Stockholders of Record.   You are a “stockholder of record” if your shares are registered directly in your name with Computershare Trust Company, N.A., our transfer agent. If you were a stockholder of record at the close of business on the Record Date and you submit a valid proxy but do not provide voting instructions with respect to your shares, all shares represented by your proxy will be voted in accordance with the recommendation of our Board on each proposal to be presented at the Annual Meeting, as described in this Proxy Statement.
Beneficial Owners of Shares Held in Street Name.   You are a “beneficial owner of shares held in street name” if your shares are not held of record in your name but are held by a broker, bank or other nominee on your behalf as the beneficial owner. Pursuant to applicable stock exchange rules, if your shares were held in "street name" forstreet name through a beneficial owner are not voted with respect to a particular proposal becausebrokerage account at the broker, bank, or other nominee (1) has not receivedclose of business on Record Date, you must provide voting instructions fromto your broker if you want your shares to be voted on the beneficial ownerelection of directors (Proposal 1), the approval, on an advisory, non-binding basis, of the compensation of our named executive officers (Proposal 3) and (2) lacks discretionary voting power to vote the shares with respect toapproval of our 2024 Performance Incentive Plan (Proposal 4). These proposals constitute “non-routine” matters on which a particular proposal. A broker bank or other nominee is not entitled to vote shares held for a beneficial owner even without receiving voting instructions from the beneficial owner, on "routine" matters. For the Annual Meeting, theowner. The ratification


of the appointment of KPMG LLP as our independent registered public accounting firm (Proposal 2) is considered a "routine" matter. On“routine”


2


matter for which your shares may be voted in the other hand, adiscretion of your broker bank or other nominee is not entitled to vote shares held for a beneficial owner absentif voting instructions from the beneficial owner on "non-routine" matters. For the Annual Meeting, the election of directors (Proposal 1) and the proposal to approve the Clean Energy Fuels Corp. 2016 Performance Incentive Plan (Proposal 3) are "non-routine" matters.have not been received. As a result, if you hold your shares in street name it is importantand you do not submit voting instructions to your broker, your broker may exercise its discretion to vote on Proposal 2 at the Annual Meeting but will not be permitted to vote on Proposal 1, Proposal 3 or Proposal 4 at the Annual Meeting. In recent years, however, several large brokers, such as Charles Schwab and TD Ameritrade have announced that they have eliminated discretionary voting for even “routine” matters. Therefore, if you hold your shares through such brokers, then your shares might not be voted, even for “routine” matters if you do not give voting instruction to your broker. Consequently, we urge every stockholder to vote their shares. If your broker does exercise this discretion, your shares will be counted as present for determining the presence of a quorum at the Annual Meeting and will be voted on Proposal 2 in the manner directed by your broker, but your shares will constitute “broker non-votes” on each of the other items at the Annual Meeting. Moreover, if you are a beneficial owner of shares in street name and you properly submit a voting instruction form to your broker, bank or other nominee specific voting instructions if you wantthat is signed but unmarked with respect to your vote on Proposals 1, 2, 3 or 4, applicable rules will generally permit your broker, bank or other nominee to countvote your shares on these proposals in accordance with the recommendations of the Board as set forth in this Proxy Statement.
Voting Requirements
The election of directors (Proposal 1) andwill be determined by a plurality of the votes cast on the proposal to approveat the Clean Energy Fuels Corp. 2016 Performance Incentive Plan (Proposal 3). Broker non-votes will not be included inAnnual Meeting. This means that the nine nominees who receive the highest number of shares representedaffirmative votes will be elected as directors. Shares voted “Withhold” and entitled to vote with respect to the proposal for which they occur. Thus, broker non-votes are not counted for purposes of determining whether stockholder approval of any individual proposal has been obtained.

        Directors will be elected by a plurality ofas votes cast by shares present in person or represented by proxy at the Annual Meeting, meaning that the nominees receiving the largest number of votes up to the number of directors to be elected at the Annual Meeting will be duly elected as directors. Abstentions and broker non-votes, if any, will have no impacteffect on the outcome of the election of directors.

The proposals to ratifyratification of the appointment of KPMG LLP as our independent registered public accounting firm (Proposal 2), the approval, on an advisory, non-binding basis, of the compensation of our named executive officers (Proposal 3), and to approve the Clean Energy Fuels Corp. 2016approval of our 2024 Performance Incentive Plan must each be approved by the affirmative vote of a majority of the votes cast foron the proposal by shares present in person or represented by proxy at the Annual Meeting. Accordingly, abstentionsFor purposes of determining the number of votes cast for Proposals 2, 3 and 4, only shares voted “FOR” or “AGAINST” are counted. Abstentions and broker non-votes if any,are not treated as votes cast and will have no impact onnot be counted in determining the outcome of Proposal 2, Proposal 3 or Proposal 4.
The following is a summary of the votesvoting requirements for these proposals as they are not consideredeach proposal to be present and entitled to votevoted on these matters.

Attending the Annual Meeting

        All stockholders that owned our common stock at the close of business on April 4, 2016, the record date, or their duly appointed proxies, may attend the Annual Meeting. Registration will begin at 8:30 a.m. PT, and seating will begin immediately thereafter. If you attend, please note that you may be asked to present valid picture identification, such as a driver's license or passport. Please also note that if you hold your shares in "street name" (that is, through a broker, bank or other nominee), you will need to bring certain additional items with you to the Annual Meeting, as described below.

Voting Shares Registered in Your Name

        If you are a stockholder of record entitled to vote at the Annual Meeting, you may vote in one of four ways:

    You may vote in person at the Annual Meeting. We will provide a ballot when you arrive.

    If you request printed copies of the proxy materials by mail, you may vote by proxy by completing the proxy card and mailing it in the envelope provided.

    You may vote by proxy by telephone by calling the toll free number found on the proxy card.

    You may vote by proxy via the Internet at the websitehttp://www.proxyvote.com by following the instructions provided in the Notice.

        Votes submitted by telephone or via the Internet must be received by 11:59 p.m. Eastern Time on Wednesday, May 25, 2016. Submitting your proxy by telephone, via the Internet or by a mailed proxy card will not affect your right to vote in person should you decide to attend the Annual Meeting, in which case your vote in person at the Annual Meeting would revoke any vote by proxy that you had earlier submitted.

Meeting:
ProposalVote RequiredRoutine vs.
Non-Routine
Matter
Effect of Abstentions and
Broker Non-Votes
1:
Election of Directors
Plurality of Votes CastNon-RoutineNo effect
2:
Ratification of Independent Registered Public Accounting Firm
Majority of Votes CastRoutineAbstentions: No effect
Broker non-votes: None expected
3:
Advisory, Non-Binding Vote on Executive Compensation
Majority of Votes CastNon-RoutineNo effect
4:
Approval of our 2024 Performance Incentive Plan
Majority of Votes CastNon-RoutineNo effect

Voting Shares Registered in the Name of a Broker, Bank or Other Nominee

        Most beneficial owners whose stock is held in street name will receive instructions for voting their shares from their broker, bank or other nominee.

        If you wish to vote in person at the Annual Meeting and your stock is held in street name, then you must obtain and bring to the Annual Meeting a legal proxy issued in your name from the broker, bank or other nominee that holds your shares of record. Contact your broker, bank or other nominee for more information about how to obtain a legal proxy. Additionally, you must bring to the Annual Meeting a copy of a brokerage statement reflecting your ownership of our common stock as of the record date.

Tabulation of Votes

The inspector of elections of the Annual Meeting will tabulate the votes of our stockholders. Thestockholders at the Annual Meeting. All shares of our common stock represented by proxy at the Annual Meeting will be voted in accordance with the instructions given on the proxy, soas long as the proxy is properly executedsubmitted and unrevoked and is received by us prior to the close of voting at the Annual Meeting or any adjournment or postponement thereof (or in the case of proxies submitted by telephone or via the Internet, by the deadline specified above). If no instruction is given on a proxy that is properly executed and received by us, then the proxy will be voted "for" each nominee for director; "for" the ratification of the appointment of KPMG LLP as our independent registered public accounting firm; and "for" the approval of the Clean Energy Fuels Corp. 2016 Performance Incentive Plan. In addition, the individuals that we have designated as proxies for the Annual Meeting will have discretionary authority to vote for or against any other matter presented at the Annual Meeting.

Revocability of Proxies

        Once you have submitted your proxy by mail, telephone or Internet, you may revoke it at any time before it is voted at the Annual Meeting. You may revoke your proxy in any one of three ways:

    You may submit another proxy marked with a later date (which automatically revokes the earlier proxy) by mail, telephone or Internet until the applicable deadline, for each method;

    You may notify our Corporate Secretary in writing that you wishall as described under “How to revoke your proxy before it is voted at the Annual Meeting;Cast or

    You may vote in person at the Annual Meeting (which automatically revokes an earlier-provided proxy).

Adjourned or Postponed Annual Meeting

        In the event that Revoke Your Vote” below. If the Annual Meeting is adjourned or postponed, your proxyproperly submitted and unrevoked proxies will still beremain effective and will be voted at the rescheduledadjourned or postponed Annual Meeting, and youstockholders will still be ableretain the right to change or revoke yourany such proxy until it is voted.

Solicitation

        This solicitation is made by our Board and we will bearactually voted at the entire cost of soliciting proxies, including the costs of preparation, assembly, printing and mailing of the Notice, the proxy card, any printed copies of this Proxy Statement requested by stockholders and any additional information furnished to stockholders. We will provide copies of solicitation materials to banks, brokerage houses, fiduciaries and custodians holding in their names shares of our common stock that are beneficially owned by others for forwarding to the beneficial owners that have requested printed materials. We may reimburse persons representing beneficial owners of common stock for their costs of forwarding


solicitation materials to the beneficial owners. Solicitations will be made primarily through the Notice and the solicitation materials made available via the Internet, via e-mailadjourned or in print to those who request copies, but may be supplemented by telephone, telegram, facsimile or personal solicitation by our directors, executive officers or other employees. No additional compensation will be paid to these individuals for these services. In addition, we have not engaged employees for the specific purpose of soliciting proxies or a proxy solicitation firm to assist us in soliciting proxies, but may elect to engage and pay the cost of such employees or such a proxy solicitation firm at any time.

Results of thepostponed Annual Meeting

Meeting.

Voting Results
Preliminary results will be announced at the Annual Meeting. Final results will be publishedreported in a current reportCurrent Report on Form 8-K to be filed with the SEC within four business days after the Annual Meeting.Meeting

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concludes. If the official results are not available at that time, we will provide preliminary voting results in such a Form 8-K and will provide the final results in an amendment to the Form 8-K as soon as they become available.

Stockholder Proposals for 2017

How to Cast or Revoke Your Vote
Stockholders of Record
If you are a stockholder of record entitled to vote at the Annual Meeting,

Requirements for Stockholder Proposals to be Considered for Inclusion you may vote in Our Proxy Materials.

        Stockholder proposals submitted pursuant to Rule 14a-8 underany one of the Securities Exchange Actfollowing ways:


On the Internet.   You may vote by proxy before the Annual Meeting starts by visiting www.proxyvote.com or by following the instructions in the Notice or proxy card you received.

By Telephone.   If you receive printed copies of 1934, as amended ("Exchange Act"), and intended to be presented at our 2017 annual meeting of stockholders and considered for inclusion in ourthe proxy materials for that meetingthe Annual Meeting, you may vote by proxy by calling the toll-free number found on the proxy card delivered with these proxy materials.

By Mail.   If you receive printed copies of the proxy materials for the Annual Meeting, you may vote by proxy by completing the proxy card delivered with these proxy materials and mailing it in the envelope provided.

During the Annual Meeting.   You may vote during the Annual Meeting by attending the live audio webcast at www.virtualshareholdermeeting.com/CLNE2024 and by following the instructions at www.virtualshareholdermeeting.com/CLNE2024.
Votes submitted by proxy on the Internet or by telephone must be received by us11:59 p.m. Eastern Time on Wednesday, May 15, 2024 to be counted. Votes submitted on the Internet during the Annual Meeting by stockholders attending the meeting and votes submitted by mail must be received no later than December 17, 2016the close of voting at the Annual Meeting to be counted.
Once you have submitted your proxy on the Internet or by telephone or mail, you may revoke it at any time before it is voted at the Annual Meeting by taking any one of the following actions:

Later-Dated Vote.   You may revoke a previously submitted proxy by submitting a later-dated vote on the Internet, by telephone or by mail, as applicable.

Written Notice.   You may revoke a previously submitted proxy by sending or otherwise delivering a written notice of revocation to the attention of our Corporate Secretary at the address of our principal executive offices.

Voting During the Annual Meeting.   If you attend the live audio webcast of the Annual Meeting at www.virtualshareholdermeeting.com/CLNE2024, you may vote your shares electronically at the Annual Meeting, which will revoke any previously submitted proxy.
To be effective, any later-dated vote must be received by the applicable deadline for the voting method used, as described above, and any written notice of revocation must be received no later than the close of voting at the Annual Meeting. Only your latest-dated vote that is received by the deadline applicable to the voting method used will be counted.
Beneficial Owners of Shares Held in Street Name
If you are a beneficial owner of shares held in street name, you have the right to instruct your broker, bank or other nominee on how to vote your shares at the Annual Meeting. You should do so by following the instructions provided by your broker, bank or other nominee regarding how to vote your shares and how to revoke a previously submitted proxy. The availability of Internet, telephone or other methods to vote your shares by proxy, and the deadlines by which to vote your shares using each such voting method, will depend on the voting processes of the broker, bank or other nominee that holds your shares.

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Attending the Virtual Annual Meeting
All stockholders that owned our common stock at the close of business on the Record Date, or their duly appointed proxies, may attend and participate in the Annual Meeting. Even if you plan to attend the 2017 annual meeting is held between April 26, 2017Annual Meeting, you are encouraged to vote on the Internet, by telephone or by mail before the Annual Meeting, to ensure that your vote will be counted. Please see “How to Cast or Revoke Your Vote” above.
To attend and June 25, 2017participate in the Annual Meeting, stockholders will need to access the live audio webcast of the meeting. To do so, stockholders of record will need to visit www.virtualshareholdermeeting.com/CLNE2024 and use their control number provided in the Notice or, if they received printed copies of the 2017 annual meeting is notproxy materials, in the proxy card delivered with those proxy materials, to log in to this website, and beneficial owners of shares held within those dates, a reasonable time before wein street name will need to follow the instructions provided by the broker, bank or other nominee that holds their shares. On the day of the Annual Meeting, stockholders may begin to printlog in to the virtual meeting beginning at 7:45 a.m. PT, and send our proxy materials for the meeting will begin promptly at 8:00 a.m. PT. We encourage stockholders to log in to this website and access the webcast before the Annual Meeting’s start time. Further instructions on how to attend, participate in and vote at the Annual Meeting are available at www.proxyvote.com. If you encounter any difficulties accessing or logging in to the Annual Meeting, including any difficulties with your control number or submitting questions, please call the technical support number displayed on the login page on the online virtual meeting platform.
Submitting your proxy before the Annual Meeting will not affect your right to vote at the Annual Meeting if you decide to attend; however, your attendance at the Annual Meeting after having submitted a valid proxy will not in and of itself constitute a revocation of your proxy. To revoke a previously submitted proxy by attending the Annual Meeting, you must otherwise comply with Rule 14a-8submit an online vote during the webcast of the Annual Meeting reflecting your new vote.
Solicitation
This solicitation is made by our Board, and we will bear the entire cost of soliciting proxies, including the costs of preparing, printing, assembling and mailing the Notice, any printed copies of this Proxy Statement, the proxy card, the Annual Report, and any additional information that we may elect to furnish to stockholders. We will provide copies of solicitation materials to brokers, banks and other nominees holding in all respects, including delivery of proof of ownershiptheir names shares of our common stock in accordance with Rule 14a-8(b)(2).

Requirementsthat are beneficially owned by others for Director Nominations or Stockholder Proposals to be Brought Before an Annual Meeting but Not Included in Our Proxy Materials.

        Our amended and restated bylaws provide that, for stockholder nominationsforwarding to the Boardbeneficial owners of those shares who have requested printed materials, and we may reimburse persons representing beneficial owners for their costs of forwarding solicitation materials to the beneficial owners. Solicitations will be made primarily through the Notice and the solicitation materials made available on the Internet or via e-mail or in print to those who request copies of our proxy materials, but may be supplemented by telephone, mail, e-mail or personal solicitation by our directors, executive officers or other proposals to be considered at an annual meeting outside the processes of Rule 14a-8, the stockholder must have given timely written notice of the proposal or nomination to the Company. To be timely for our 2017 annual meeting of stockholders, a stockholder's notice must be delivered to or mailed and received by our Corporate Secretary at our principal executive offices between February 25, 2017 and March 27, 2017 if the 2017 annual meeting is held between April 26, 2017 and June 25, 2017 or, if the 2017 annual meeting is not held within those dates, between the 60th day and 90th day before the date the meeting is held or no later than the 10th day after the date of our public announcement of the meeting date if we publicly announce that date less than 70 days before the date of the meeting. A stockholder's notice to the Company must set forth, as to each matter the stockholder proposes to bring before the 2017 annual meeting, all of the information required by our amended and restated bylaws.employees. We will pay no additional compensation to these individuals for these activities. We have not entertain any proposals or nominations atengaged employees for the Annual Meeting or at our 2017 annual meetingspecific purpose of stockholders that do not meet the requirements set forth in our amended and restated bylaws. If we comply and the stockholder does not comply with the requirements of Rule 14a-4(c)(2) under the Exchange Act, we may exercise discretionary voting authority under proxies that we solicit to vote in accordance with our best judgment on any such stockholder proposal or nomination.

soliciting proxies.

Separate Copy of Annual Report or Other Proxy Materials

We have adopted a procedure called "householding,"“householding,” which the SEC has approved. Under this procedure, we are delivering a single copy of the Notice and, if requested, this Proxy Statement and our annual report for the year ended December 31, 2015 ("Annual Report")Report to multiple stockholders who share the same address and who did not receive a Notice or otherwise receive their proxy materials by e-mail, unless we have received contrary instructions from one or more of the stockholders.a stockholder. This procedure reduces the Company'sour printing and mailing costs and other fees. Stockholders who participate in householding will continue to be able to accessrequest and receive a separate Notice or proxy cards. Uponcard. Additionally, upon written or oral request, we will deliver promptly a separate copy of the Notice, this Proxy Statement or the Annual Report to any stockholder at a shared address to which we have delivered a single copy of these documents. To receive a separate copy of the Notice, this Proxy Statement or the Annual Report, or to notify us that you wish to receive separate copies of our proxy materials for future annual meetings of our stockholders, write to the attention of Investor Relations at Clean Energy Fuels Corp., 4675 MacArthur Court, Suite 800, Newport Beach, California 92660the address of our principal executive offices or call (949) 437-1000. Stockholders who share an address and receiveare receiving multiple copies of the Notice, this Proxy Statement or the Annual Reportour proxy materials may also request to receive a single copy of any suchthis Proxy Statement and the Annual Report or our proxy materials for future annual meetings of our stockholders by followingwriting or calling us at the instructionsaddress or telephone number provided above.


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SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table showstwo tables below show the amountbeneficial ownership of certain persons with respect to our common stock, beneficially owned by holders of more than 5% of theour only outstanding shares of any class of our voting securities, except for Mr. T. Boone Pickens (one of our founders and a member of our Board), whose ownership is included in the second table below.

        We have determined beneficial ownership as shown in the following two tables in accordance with the rules of the SEC.securities. Except as indicated by the footnotes below,to these tables, we believe, based on the information furnished or otherwise available to us, that the persons and entities named in the twothese tables below have sole voting and investment power with respect to all shares of common stock shown as beneficially owned by them, subject to applicable community property laws.

        Applicable percentage

We have determined beneficial ownership as shown in these tables in accordance with the two tables below is based on 100,432,328 sharesrules of common stock outstanding on April 4, 2016.the SEC. In accordance with these rules, in computing the number of shares of our common stock beneficially owned by a person and the percentage ownership of that person, we deemed asto be outstanding all shares of our common stock (i) subject to (1) stock options held by that person that are currently exercisable or exercisable within 60 days after April 4, 2016March 22, 2024, and (ii) underlying convertible notes(2) restricted stock units (“RSUs”) held by that person that are currently convertible or convertiblesubject to vesting and settlement within 60 days after April 4, 2016. However, weMarch 22, 2024. We did not, however, deem these shares outstanding for the purpose of computing the percentage ownership of any other person.

Name and Address of Beneficial Owner
 Common
Stock
Beneficially
Owned
 Percent of
Common Stock
Outstanding
 

Anchorage Capital Group, L.L.C.(1)
610 Broadway, 6th Floor
New York, NY 10012

  6,698,721  6.25%

We calculated percentage ownership as shown in these tables based on 223,263,055 shares of our common stock outstanding on March 22, 2024. The information in these tables is not necessarily indicative of beneficial ownership for any other purpose, and the inclusion of any shares in these tables does not constitute an admission of beneficial ownership of the shares.
The following table shows the amount and percentage of our common stock beneficially owned by each holder of more than 5% of the outstanding shares of our common stock:
Name and Address of Beneficial OwnerCommon
Stock
Beneficially
Owned
Percent of
Common
Stock
Outstanding
TotalEnergies/TMS(1)
2, place Jean Millier
La Défense 6
92400 Courbevoie
France
51,100,28222.9%
Grantham, Mayo, Van Otterloo & Co. LLC(2)
53 State Street, Suite 3300
Boston, Massachusetts 02109
16,086,3947.2%
BlackRock, Inc.(3)
50 Hudson Yards
New York, New York 10001
14,741,6946.6%
Dimensional Fund Advisors LP(4)
6300 Bee Cave Road, Building One
Austin, TX 78746
12,314,6365.5%
(1)

Based on a Schedule 13D/A filed by TotalEnergies S.E. (“TotalEnergies”) and its direct wholly owned subsidiary Total Marketing Services S.A.S. (“TMS”) on June 15, 2021 that reflects shares of common stock beneficially owned as of June 14, 2021, and updated to reflect subsequent sales of shares of our common stock by TMS as reported on a Form 4 filed with the SEC on June 17, 2021. TotalEnergies and TMS have (i) shared voting power over 51,100,282 shares of our common stock, which consists of (a) 42,581,801 shares of our common stock that were purchased by TMS pursuant to a stock purchase agreement, dated May 9, 2018, between TMS and the Company, and (b) 8,518,481 shares of common stock that are the subject of a voting agreement, dated May 9, 2018, among TMS, the Company, and all of our then-directors and officers, pursuant to which each such director and officer appointed TMS as such person’s proxy and attorney-in-fact, and authorized TMS to represent and vote (or consent, if applicable) all shares of common stock owned or controlled by such person with respect to the election of the individuals designated by TMS to serve on our Board pursuant to TMS’ director designation rights (described below under “Certain Relationships and Related Party Transactions”), and (ii) shared dispositive power over 42,581,801 shares of our common stock. TotalEnergies and TMS have expressly disclaimed beneficial ownership of any shares of common stock subject to the voting agreement discussed in (i)(b) above.
(2)
Based on a Schedule 13G/A filed by Grantham, Mayo, Van Otterloo & Co. LLC (“Grantham”) on February 13, 2024 that reflects shares of common stock beneficially owned as of December 31, 2023. According to the Schedule 13G/A, Grantham has sole voting power and sole dispositive power with respect to 16,086,394 shares of our common stock.

6


(3)
Based on a Schedule 13G/A filed by BlackRock Inc. on January 29, 2024 that reflects shares of common stock beneficially owned as of December 31, 2023. According to the Schedule 13G/A, BlackRock Inc. has sole voting power with respect to 14,373,708 shares of our common stock and sole dispositive power with respect to 14,741,694 shares of our common stock.
(4)
Based on a Schedule 13G filed by Dimensional Fund Advisors LP on February 16, 2016,9, 2024 that reflects shares of common stock beneficially owned as of December 31, 2015, Anchorage Capital Group, L.L.C. ("Anchorage Capital") may be deemed2023. According to beneficially own $104,500,000 of principal amount of certain 5.25% senior convertible notes due 2018 (the "2018 Convertible Notes"), which may be converted into an aggregate of 6,698,721the Schedule 13G, Dimensional Fund Advisors LP has sole voting power with respect to 12,076,348 shares of common stock. The securities beneficially owned by Anchorage Capital include: (i) $102,340,000 of principal amount of the 2018 Convertible Notes held for the account of Anchorage Capital Master Offshore, Ltd. ("Anchorage Offshore"), which may be converted into an aggregate of 6,560,260 shares ofour common stock and (ii) $2,160,000 of principal amount of the 2018 Convertible Notes held for the account of PCI

    Fund LLC ("PCI Fund"), which may be converted into an aggregate of 138,461sole dispositive power with respect to 12,314,636 shares of our common stock. Anchorage Capital is the investment advisor of Anchorage Offshore and PCI Fund, Anchorage Advisors Management, L.L.C. ("Anchorage Management") is the sole managing member of Anchorage Capital, and Kevin M. Ulrich is the Chief Executive Officer of Anchorage Capital and the senior managing member of Anchorage Management.

The following table shows the amount and percentage of our common stock beneficially owned on April 4, 2016 (unless otherwise indicated) by:

    March 22, 2024 by each of our named executive officers and current directors;directors and

    by all of our current executive officers and current directors as a group.

        The address of each beneficial owner listed in the following table is c/o Clean Energy Fuels Corp., 4675 MacArthur Court, Suite 800, Newport Beach, California 92660.

group:
Name of Beneficial OwnerCommon Stock
Beneficially Owned
Number%
Andrew J. Littlefair(1)2,743,5331.2%
Robert M. Vreeland(2)1,053,219*
Mitchell W. Pratt(3)1,401,981*
Barclay F. Corbus(4)1,365,898*
Lizabeth Ardisana(5)223,067*
Karine Boissy-Rousseau
Patrick J. Ford(6)9,236*
James C. Miller III(7)446,568*
Stephen A. Scully(8)537,872*
Kenneth M. Socha(9)504,795*
Mathieu Soulas
Vincent C. Taormina(10)602,585*
All current executive officers and current directors as a group (11 persons)(11)8,202,1503.6%

 
 Common Stock
Beneficially Owned
 
Name of Beneficial Owner
 Number % 

Directors and Named Executive Officers:

       

T. Boone Pickens(1)

  22,280,783  21.17%

Andrew J. Littlefair(2)

  1,942,057  1.91%

Robert M. Vreeland(3)

  39,000  * 

Mitchell W. Pratt(4)

  949,217  * 

Peter J. Grace(5)

  240,531  * 

Barclay F. Corbus(6)

  728,632  * 

John S. Herrington(7)

  459,606  * 

Warren I. Mitchell(8)

  348,215  * 

Kenneth M. Socha(9)

  240,278  * 

James C. Miller III(10)

  193,356  * 

Vincent C. Taormina(11)

  283,515  * 

James E. O'Connor(12)

  93,000  * 

Stephen A. Scully(13)

  70,000  * 

All current executive officers and directors as a group (13 persons)(14)

  27,868,190  26.69%

*

Represents less than 1%.

(1)

Beneficial ownership consists of (a) 725,0001,430,982 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after April 4, 2016,March 22, 2024, and (b) 4,113,923 shares of common stock issuable upon conversion of $65,000,000 of principal amount of the 7.5% Convertible Notes, and (c) 17,441,8601,312,551 shares of outstanding common stock held directly. As of April 4, 2016, 17,441,860 outstanding shares held by Mr. Pickens, representing 17.37% of our issued and outstanding shares of common stock are pledged as collateral to or held in margin accounts with financial institutions.

(2)

Beneficial ownership consists of (a) 1,324,190747,293 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after April 4, 2016,March 22, 2024, and (b) 617,867305,926 shares of outstanding common stock held directly.

(3)

Beneficial ownership consists of (a) 34,000534,688 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after April 4, 2016,March 22, 2024 and (b) 5,000 shares of outstanding common stock held directly.

(4)
Beneficial ownership consists of (a) 759,609 shares of common stock subject to options currently exercisable or exercisable within 60 days after April 4, 2016 either directly or by the Pratt Family

    Trust, over which Mr. Pratt possesses sole voting and investment control, and (b) 189,608867,293 shares of outstanding common stock held directly or by the Pratt Family Trust.

(5)
On May 17, 2023, Mitchell W. Pratt transitioned from Chief Operating Officer to Chief Technology Development Officer and ceased being an executive officer of the Company. He is included as a named executive officer for purposes of this proxy on account of his service in 2023.
(4)
Beneficial ownership consists of (a) 221,431811,388 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after April 4, 2016, (b) 9,100 shares of outstanding common stock held directly and (c) 10,000 shares of common stock held by Mr. Grace's spouse.

(6)
Beneficial ownership consists of (a) 651,653 shares of common stock subject to options currently exercisable or exercisable within 60 days after April 4, 2016,March 22, 2024, and (b) 76,979554,510 shares of outstanding common stock held directly or by an individual retirement account for the benefit of Mr. Corbus.

(7)
(5)
Beneficial ownership consists of (a) 295,615179,938 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after April 4, 2016 either directly or by the J&L Herrington 2002 Family Trust, over which Mr. Herrington possesses votingMarch 22, 2024; (b) 13,129 shares of common stock subject to restricted stock units vesting within 60 days after March 22, 2024, and investment control, and (b) 163,991(c) 30,000 shares of outstanding common stock held by the J&L Herrington 2002 Family Trust.

(8)
directly.
(6)
Beneficial ownership consists of (a) 288,1155,434 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after April 4, 2016,March 22, 2024; (b) 3,802 shares of common stock subject to restricted stock units vesting within 60 days after March 22, 2024, and (b) 60,100(c) zero shares of outstanding common stock held directly.

(9)
(7)
Beneficial ownership consists of (a) 174,638262,438 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after April 4, 2016,March 22, 2024, (b) 13,129 shares of common stock subject to restricted stock units vesting within 60 days after March 22, 2024, and (c) 171,001 shares of outstanding common stock held directly or by a trust over which Mr. Miller possesses shared voting and investment control.
(8)
Beneficial ownership consists of (a) 325,625 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after March 22, 2024, (b) 13,129 shares of common stock subject to restricted stock units vesting within 60 days after March 22, 2024, and (c) 199,118 shares of outstanding common stock held by the Scully Family Trust, over which Mr. Scully possesses sole voting and investment control.

7


(9)
Beneficial ownership consists of (a) 262,438 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after March 22, 2024, (b) 13,129 shares of common stock subject to restricted stock units vesting within 60 days after March 22, 2024, (c) 30 shares of outstanding common stock (the "UTMA Shares") held in a Uniform Transfers to Minors Act account for which Mr. Socha is the custodian and (c) 65,610over which Mr. Socha possesses sole voting and investment control, and (d) 229,118 shares of outstanding common stock held directly. Mr. Socha possesses voting and dispositive power over the UTMA Shares.

(10)

Beneficial ownership consists of (a) 183,356302,438 shares of common stock subject to options currently exercisable or exercisable within 60 days after April 4, 2016, andMarch 22, 2024, (b) 10,000 shares of outstanding common stock, of which 9,900 shares of common stock are held by a trust over which Mr. Miller possesses voting and investment control and 100 shares of common stock are held directly.

(11)
Beneficial ownership consists of (a) 215,61513,129 shares of common stock subject to options currently exercisable or exercisablerestricted stock units vesting within 60 days after April 4, 2016,March 22, 2024, and (b) 67,900(c) 287,018 shares of outstanding common stock held by the Vincent C. Taormina REV Intervivos Trust UAD 5/14/84, over which Mr. Taormina possesses sole voting and investment control.

(12)
(11)
Beneficial ownership consists of (a) 85,0005,043,431 shares of common stock subject to stock options currently exercisable or exercisable within 60 days after April 4, 2016, andMarch 22, 2024, (b) 8,000 shares of outstanding common stock held by the James E. O'Connor Revocable Trust, over which Mr. O'Connor possesses voting and investment control.

(13)
Beneficial ownership consists of (a) 40,00069,447 shares of common stock subject to options currently exercisable or exercisablerestricted stock units vesting within 60 days after April 4, 2016,March 22, 2024, and (b) 30,000 shares of outstanding common stock held by the Scully Family Trust, over which Mr. Scully possesses voting and investment control.

(14)
Beneficial ownership consists of (a) 9,112,145 shares of common stock subject to options currently exercisable or exercisable within 60 days after April 4, 2016 or issuable upon conversion of outstanding convertible notes, and (b) 18,756,045(c) 3,089,272 shares of outstanding common stock held directly by our current executive officers and directors, by individual retirement accounts for the benefit of a director or executive officer, or by trusts or a Uniform Transfers to Minors Act account over which an executive officer or director possesses voting and investment control.


8


PROPOSAL NO. 1
ELECTION OF DIRECTORS

        Our Board, acting pursuant to our amended and restated bylaws, has determined that

General
Upon the number of directors constituting the full Board shall be nine. The Board has, upon recommendation of our nominating and corporate governance committee, the Board nominated Andrew J. Littlefair, Warren I. Mitchell, John S. Herrington,Stephen A. Scully, Lizabeth Ardisana, Karine Boissy-Rousseau, Patrick J. Ford, James C. Miller III, James E. O'Connor, T. Boone Pickens, Stephen A. Scully, Kenneth M. Socha, Mathieu Soulas, and Vincent C. Taormina, for election as members of the Board.

Board at the Annual Meeting.

Each of our director nominees, other than Messrs. Littlefair and Soulas and Ms. Boissy-Rousseau, are independent directors within the meaning of applicable rules of The Nasdaq Stock Market LLC (“Nasdaq”). Additionally, the Board affirmatively determined that Mr. Parker A. Weil was an independent director within the meaning of applicable Nasdaq rules during his term as director.
Each of the nominees is currently a current director of our Company and was elected or re-elected by our stockholders at our 2015 annual meeting2023 Annual Meeting of stockholders. Stockholders, other than Mr. Soulas who was appointed to our Board in September 2023 to replace Laurent Wolffsheim and Mr. Ford who was appointed to our Board in March 2024. Ms. Boissy-Rousseau and Mr. Soulas are each being nominated for election at the Annual Meeting pursuant to director designation rights granted to TMS in June 2018. See “Certain Relationships and Related Party Transactions” below for further information about the director designation rights granted to TMS.
Upon his reelectionelection at the Annual Meeting, each director will serve a one-year term until the next annual meeting of our stockholders and until his or her respective successor is duly elected and qualified or until his successor is duly qualified and elected. During the course of a term, the Board may appoint a new director to fill any vacant seat, including a vacancy caused by an increase to the sizeor her earlier resignation or removal. Each of the Board. In that event, the newly appointedBoard’s director would complete the term of the director he or she replaced or, if appointed to fill a vacancy caused by an increase to the size of the Board, serve until the next annual meeting of stockholders. Each person nominated for electionnominees has agreed to serve if elected, and, as of the date of this Proxy Statement, we have no reason to believe that any nominee will be unable or unwilling to serve. However,serve as a director if elected. If, however, any nominee cannotis unable to serve, thenor for good cause will not serve, as a director at the time of the Annual Meeting, the persons who are designated as proxies may vote your proxy will be votedshares, in their discretion, for another nominee that may be proposed by the Board or if no nominee is proposed by the Board a vacancy will occur.

may choose to reduce the size of the Board.

We, as a matter of policy, encourage our directors to attend meetings of our stockholders and, in 2015, seven2023, all of our then-current directors attended our annual meeting. There are no family relationships between any director nominees or executive officers of our Company, except that Mr. Pickens became Mr. Grace's father-in-law in November 2015, and there are no arrangements or understandings between any nominee and any other person pursuant to which such nominee was or is selected as a director or nominee.

Director Nominees for Director

        You are being asked to vote on the nine director nominees listed below. Unless otherwise instructed, the proxy holders will vote the proxies received by them for these nine nominees. All of our nominees for director are current members of our Board.

The names of the director nominees, their ages as of January 31, 2016,the date of this Proxy Statement, their current positions and offices with our Company and other information about themtheir professional backgrounds are shown below.

We believe each of these nominees contributes to the Board’s effectiveness as a whole based on the wealth of executive leadership experience they bring to the Board, as well as the other specific attributes, qualifications and skills described below. There are no family relationships between any director, executive officer or person nominated or chosen to become a director or executive officer of our Company, and except as described under “General” above with respect to Ms. Boissy-Rousseau and Mr. Soulas, there are no arrangements or understandings between any director or nominee and any other person pursuant to which such individual was or is selected as a director or nominee.
Name of Director Nominee
AgePositionPosition(s) and Office(s)

Andrew J. Littlefair

5563President, Chief Executive Officer and Director

Warren I. Mitchell

Stephen A. Scully
7865Chairman of the Board

John S. Herrington

Lizabeth Ardisana
7673Director

Karine Boissy-Rousseau

50Director
Patrick J. Ford62Director
James C. Miller III

7381Director

James E. O'Connor

66Director

T. Boone Pickens

87Director

Stephen A. Scully

56Director

Kenneth M. Socha

6977Director

Mathieu Soulas

53Director
Vincent C. Taormina

6068Director


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Andrew J. Littlefair, one of our founders, has served as our President, Chief Executive Officer and a director since June 2001. From 1996 to 2001, Mr. Littlefair served as President of Pickens Fuel Corp., and from 1987 to 1996, Mr. Littlefair served in various management positions at Mesa, Inc., an energy company. From 1983 to 1987, Mr. Littlefair served in the Reagan Administration as a Staff Assistant to the President. Mr. Littlefair serves as the chairman of the board of directors of SAFE&CEC S.r.l. and previously served on the board of directors of Hilltop Holdings Inc. (formerly PlainsCapital Corporation), a reporting company under the Securities Exchange Act of 1934, as amended (“Exchange Act”), from 2009 to 2023. Mr. Littlefair served as Chairman of NGV America, the leading U.S. advocacy group for natural gas vehicles, from March 1993 to March 2011. Mr. Littlefair served on the board of directors of Westport Innovations Inc., a Canadian company publicly traded on the NASDAQ Global Market, from


2007 to June 2010. Mr. LittlefairHe has served on the boardRonald Reagan Presidential Foundation & Institute Board of directors of Hilltop Holdings Inc. (formerly PlainsCapital Corporation), a reporting company under the Exchange Act,Trustees since 2009.July 2011. Mr. Littlefair earned a B.A. from the University of Southern California.

Warren I. Mitchell has served as

Skills and Qualifications:   Mr. Littlefair brings to our Chairman of the Board and a director since May 2005. For over 40 years until his retirement in 2000, Mr. Mitchell worked in various positions at Southern California Gas Company, including as President beginning in 1990 and Chairman beginning in 1996. Mr. Mitchell currently serves as Chairman of the board of directors of The Energy Coalition, a non-profit organization devoted to education on energy management. Mr. Mitchell earned a B.S. and an M.B.A. from Pepperdine University and completed the Stanford Executive Program.

John S. Herrington has servedexperience as a director of our Company since November 2005. For over a decade, Mr. Herrington has been a self-employed businessmanco-founder and attorney-at-law. From 1985 to 1989, Mr. Herrington served as the U.S. Secretary of Energy, and from 1983 to 1985, Mr. Herrington served as Assistant to the President for presidential personnel in the Reagan Administration. From 1981 to 1983, Mr. Herrington served as Deputy Assistant to the President and Assistant Secretary of the U.S. Navy. Mr. Herrington earned an A.B. from Stanford University and a J.D. and an LL.B. from the University of California, Hastings College of the Law.

James C. Miller III has served as a director of our Company since May 2006. Mr. Miller served on the board of governors of the United States Postal Service from April 2003 to December 2011 and as its chairman from January 2005 to 2008, and has been nominated for another term on that board and currently awaits confirmation by the U.S. Senate. Mr. Miller has served on the board of directors of the Washington Mutual Investors Fund since October 1992 and served on the board of directors of the J.P. Morgan Value Opportunities Fund from December 2001 to January 2014. From 1981 to 1985, Mr. Miller was Chairman of the U.S. Federal Trade Commission in the Reagan Administration, and also served as Director of the U.S. Office of Management and Budget from 1985 to 1988. Mr. Miller earned a B.B.A. from the University of Georgia and a Ph.D. from the University of Virginia.

James E. O'Connor has served as a director of the Company since September 2011. Mr. O'Connor has more than 30 years of experience in the waste industry. He was most recently a senior executive at Republic Services where he served as Chief Executive Officer from December 1998 to January 2011 and as Chairman of the Board from January 2003 to May 2011. From 1972 to 1978 and from 1982 to 1998, Mr. O'Connor served in various positions with Waste Management, Inc., including Senior Vice President from 1997 to 1998, Area President of Waste Management of Florida, Inc. from 1992 to 1997, Senior Vice President of Waste Management—North America from 1991 to 1992 and Vice President—Southeastern Region from 1987 to 1991. Mr. O'Connor is a member of the board of directors of the Canadian National Railway Company, a Canadian company publicly traded on the New York Stock Exchange, and Casella Waste Systems, Inc., a reporting company under the Exchange Act. Mr. O'Connor earned a B.A. from DePaul University.

T. Boone Pickens has served as a director of our Company since June 2001 and founded Pickens Fuel Corp. in 1996. Mr. Pickens has served as the Chairman and Chief Executive Officer of BP Capital, L.P., a private investment firm focused on investments in the energy sector, since he founded the company in 1996,our Company, which gives him unique insight into our Company’s operations, challenges and is also active in management of the BP Capital Equity Fund and BP Capital Commodity Fund, which are privately-held investment funds. From October 2005 to March 2015, Mr. Pickens served on the board of directors of EXCO Resources, Inc., a publicly traded energy company. Mr. Pickens was the founder of Mesa Petroleum Company, an oil and gas company, and served as the Chief Executive Officer and a director of the company and its successors from 1956 to 1996. Mr. Pickens earned a B.S. from Oklahoma State University.

opportunities.

Stephen A. Scully has served as a director of our Company since January 2014.2014 and was appointed as Chairman of the Board on January 1, 2018. Mr. Scully was founder and President of the Scully Companies, a California-based truck leasing and specialized contract carriage provider. He started the Scully Companies immediately after graduating from the


University of Southern California in 1981 and subsequently sold it to Ryder System in January 2011. The Scully Companies was the largest independent asset basedasset-based logistics provider in the western United States. Since selling the Scully Companies, Mr. Scully has been a private investor.investor and is currently the Chairman of the Newport Beach Harbor Commission. Additionally, he was the Chairman of the Board of the National Truck Leasing System from 1999 to 2010, a board member of the Truck Rental and Leasing Association from 1990 to 1999, a board member of Ameriquest Transportation and Logistics Resources from 2007 to 2008 and is a former member of the California Trucking Association.

Skills and Qualifications:   Mr. Scully brings to our Board the insight of a successful entrepreneur and operator, as well as extensive knowledge of the trucking industry.
Lizabeth Ardisana has served as a director of our Company since December 2019. Ms. Ardisana is the chief executive officer and the principal owner of the firm ASG Renaissance, LLC, which she founded in 1987. ASG Renaissance is a technical and communication services firm with experience providing services to clients in the automotive, environmental, defense, construction, healthcare, banking, and education sectors. Ms. Ardisana is also chief executive officer of Performance Driven Workforce, LLC, a scheduling and staffing firm that was founded in 2015 and has since expanded into five states. Ms. Ardisana, a Hispanic and female business owner, is an active business and civic leader in Michigan. Ms. Ardisana has held numerous leadership positions in a variety of non-profit organizations, including CS Mott Foundation, Kettering University, Metropolitan Affairs Coalition and Focus: Hope. She was appointed by the governor of Michigan to the executive board of the Michigan Economic Development Corporation and serves on its finance committee. Ms. Ardisana is also vice chair of Wayne Health where she serves on the audit committee. On October 10, 2022, Ms. Ardisana was appointed to the Board of Directors of Hannon Armstrong Sustainable Infrastructure Capital, Inc., a leading investor in climate solutions. She has been a member of the board of directors of LeddarTech Holdings since 2024, and previously served as a member of the board of directors of Huntington Bancshares Inc. from 2016 to 2023 and as a member of the board of directors of FirstMerit Corporation from 2013 to 2016. Ms. Ardisana previously served as a board member of United Way for Southeastern Michigan (where she served as chair) and the Skillman Foundation. Ms. Ardisana holds a bachelor’s degree in mathematics and computer science from the University of Texas, a master’s degree in Mechanical Engineering from the University of Michigan and a master’s degree in Business Administration from the University of Detroit.
Skills and Qualifications:   Ms. Ardisana brings to our Board key experience and relationships in the automotive and environmental industries, as well as skills acquired through serving as a chief executive officer and as a member of multiple public and private company boards.
Karine Boissy-Rousseau has served as a director of our Company since December 2021. Ms. Boissy-Rousseau has served as Vice President Green Gases in the Gas, Renewables and Power business segment of TotalEnergies since September 2023. Prior to that, she was Senior Vice President New Mobility and Marketing of TotalEnergies’ Marketing & Services business segment since September 2021. Before that she was

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President of Air Liquide Hydrogen Mobility & Energy, where she led the development of hydrogen activities in the transportation sector for North America from 2019 to 2021. Prior to that, she was Managing Director of Air Liquide Benelux Industries from 2016 to 2019 and General Manager of Air Liquide France Industries in Paris from 2012 to 2016. Ms. Boissy-Rousseau holds a master’s degree in chemical engineering and a master’s degree in marketing.
Skills and Qualifications:   Ms. Boissy-Rousseau was appointed as a director pursuant to director designation rights granted to TMS in June 2018, in a transaction described under “Certain Relationships and Related Party Transactions” below. Ms. Boissy-Rousseau brings to our Board extensive renewable fuels experience, significant management skills and key relationships within the TotalEnergies group.
Patrick J. Ford has served as a director of our Company since March 2024. Prior to that, Mr. Ford served as an Audit Partner at KPMG LLP from 1994 until his retirement in 2022. Mr. Ford served numerous SEC registrants as the Lead Audit Engagement Partner in the energy, automotive and technology sectors during his tenure with KPMG LLP. Mr. Ford served as a member of the Board of Directors of KPMG LLP and its related entity, KPMG Americas LLP from 2013-2018. Mr. Ford is a certified public accountant (retired status) in California, Arizona and Hawaii.
Mr. Ford previously served on the Board of Advisors for the University of Southern California Marshall School of Business from 2006 to 2019 and the Board of Advisors for the Shidler School of Business at the University of Hawaii at Manoa from 2003 to 2007. Mr. Ford holds a bachelor’s degree in business administration with an emphasis in accounting from the University of Southern California.
Skills and Qualifications:   Mr. Ford brings to our Board extensive experience in finance and accounting within the energy industry.
James C. Miller III has served as a director of our Company since May 2006. Mr. Miller served on the board of governors of the United States Postal Service from 2003 to 2011 and as its Chairman from 2005 to 2007. Mr. Miller served on the board of directors of the Washington Mutual Investors Fund from 1992 to 2017. From 1981 to 1985, Mr. Miller was Chairman of the U.S. Federal Trade Commission in the Reagan Administration, and also served as Director of the U.S. Office of Management and Budget from 1985 to 1988. Mr. Miller earned a B.B.A. from the University of Georgia and a Ph.D. in economics from the University of Virginia
Skills and Qualifications:   Mr. Miller brings to our Board significant financial expertise and experience dealing with large and financially complex organizations.
Kenneth M. Socha has served as a director of our Company since January 2003. SinceFrom 1995 until his retirement at the end of 2014, Mr. Socha has served as a Senior Managing Director of Perseus, L.L.C., a private equity fund management company. Previously, Mr. Socha practiced corporate and securities law as a partner in the New York office of Dewey Ballantine. Mr. Socha earned an A.B. from the University of Notre Dame and a J.D. from Duke University Law School.

Skills and Qualifications:   Mr. Socha brings to our Board legal insight gained during his distinguished legal career and the perspective and financial acumen of a highly successful private equity investor.
Mathieu Soulas has served as a director of our Company since September 2023. Mr. Soulas began his career in TotalEnergies’ Refining Division. After holding various positions in European refineries and as head of Refining & Petrochemical operations in the Benelux countries, he moved to the Marketing & Services branch in 2013 as Executive Vice President for the geographical zone of the Indian Ocean and Vice President Supply and Logistic for Africa & Middle East. In 2017, he became Vice President in charge of the Lubricants Business Unit worldwide, covering industrial operations, supply chain, marketing and global sales. In August 2019, he joined the Company’s headquarters as Senior Vice President Strategy & Climate. He was then appointed Vice President Strategy & Supply of the Marketing & Services branch in September 2021. In July 2023, Mathieu Soulas became Senior Vice President New Mobilities & Marketing, regrouping the Business Units Electric Vehicles, Hydrogen and Gas as well as the Business Lines Network, B2B and Mobility Services. Mathieu Soulas is a graduate of France’s Ecole Polytechnique and IFPEN engineering schools.

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Skills and Qualifications:   Mr. Soulas was appointed as a director pursuant to director designation rights granted to TMS in June 2018, in a transaction described under “Certain Relationships and Related Party Transactions” below. He brings to our Board significant renewable natural gas and energy industry experience, significant management skills and key relationships within the TotalEnergies group.
Vincent C. Taormina has served as a director of our Company since April 2008. Mr. Taormina is the former Chief Executive Officerchief executive officer of Taormina Industries, Inc., one of California'sCalifornia’s largest solid waste and recycling companies. In 1997, Taormina Industries, Inc. merged with Republic Services, a publicly-held waste handling company that operates throughout the United States. Mr. Taormina served as Regional Vice President of Republic Services from 1997 to 2001, managing the overall operations of eleven western states. Since 2001, Mr. Taormina has served and continues to serve as a consultant to Republic Services and is a private investor. Mr. Taormina is a past President of the Orange County Solid Waste Management Association, past President Elect of the California Refuse Removal Council and a former board member of the Waste Recyclers Council for the National Solid Waste Management Board.

Required Vote

Skills and Qualifications:   Mr. Taormina brings to our Board Recommendation

        Directors will be elected bythe perspective of a pluralityhighly successful entrepreneur and industry leader in the refuse and recycling industry.

Selecting Our Director Nominees
Under its charter and our corporate governance guidelines, our nominating and corporate governance committee is responsible for reviewing with the Board, on an annual basis, the requisite skills and characteristics of potential new Board members, as well as the composition of the votes castBoard as a whole. This assessment includes an analysis of each member’s qualifications as a director and each member’s independence, as well as consideration of age, experience and other diversity factors in the context of the needs of the Board.
Minimum Criteria
Pursuant to our corporate governance guidelines, a majority of our directors must meet the standards for independence as required by Nasdaq, and no director may serve on this proposalmore than three other public company boards of directors unless approved in advance by shares presentthe Board. Further, applicable Nasdaq rules provide that at least one member of our Board must meet the criteria for an “audit committee financial expert” as defined by SEC rules, and the members of certain of our Board committees must satisfy enhanced independence and financial expertise standards under applicable Nasdaq and SEC rules. We also believe all directors should possess the following attributes:

Professional ethics and values, consistent with our code of ethics (described below under “Corporate Governance — Code of Ethics”);

A commitment to building stockholder value;

Business acumen and broad experience and expertise at the policy-making level in personone or represented by proxymore of the areas of particular consideration described under “Key Qualifications, Skills and entitledAttributes” below;

The ability to voteprovide insights and practical wisdom based on the electionindividual’s experience or expertise; and

Sufficient time to effectively carry out duties as a Board member.
Other than the foregoing, there are no stated minimum criteria for director nominees, and the nominating and corporate governance committee may consider these factors and any such other factors as it deems appropriate. The nominating and corporate governance committee does, however, review the activities and associations of each potential director candidate to ensure there is no legal impediment, conflict of interest or other consideration that might hinder or prevent service on our Board.
Diversity
Although we do not have a formal policy with respect to Board diversity, the nominating and corporate governance committee strives to assemble a board of directors atthat brings to our Company a variety of perspectives, skills and expertise. To achieve this, the Annual Meeting, meaningnominating and corporate governance committee considers individuals from various disciplines and backgrounds in recommending director nominees to the

12


Board, including diversity characteristics that may be self-identified by directors or director nominees, such as race, gender, military service, or other socioeconomic or demographic characteristics. The nominating and corporate governance committee also seeks to recommend directors who possess a broad range of business, professional, governmental, community involvement and natural gas and energy industry experience.
The nominating and corporate governance committee assesses these and other factors as it deems appropriate in connection with its annual review of each director and the Board as a whole and takes these factors into account when determining whether to nominate existing directors for re-election in connection with this annual review. The nominating and corporate governance committee also takes these factors into account when considering any director nominee outside of its annual review process, such as when a vacancy exists on the Board or when a stockholder suggests a new director candidate that the nominees who receivecommittee or the highestBoard decides to consider for a mid-year appointment. In addition, as part of its annual self-evaluation process, the nominating and corporate governance committee assesses its consideration of diversity in identifying and evaluating director candidates, including the key qualifications, skills and attributes that it aims for directors to possess.
The nominating and corporate governance committee is committed to further diversifying the Board across a number of votesmetrics, including gender and representatives of underrepresented communities. Our Board has appointed three female directors since 2019, including Ms. Lizabeth Ardisana in December 2019, Ms. Karine Boissy-Rousseau in December 2021, and Ms. Lorraine Paskett in December 2021 (who resigned in May 2023). Two of our nine current directors are female and one of our nine current directors self-identify as an “underrepresented minority” as such term is defined by Nasdaq Listing Rule 5605(f); among the nine directors nominated for election in this Proxy Statement, two are female and one self-identifies as an “underrepresented minority” as such term is defined by Nasdaq Listing Rule 5605(f).
Board Refreshment
Board members with a diversity of life experiences, backgrounds and gender are important to bring a variety of perspectives to our Board, as discussed above under “Diversity.” We aim to regularly bring new directors to our Board at a responsible pace to ensure the Board benefits from fresh ideas and perspectives, while balancing the importance of directors who have experience with our Company.
Board refreshment is a key matter considered during our annual Board and committee self-evaluations. We have refreshed a majority of our Board since 2018. The average tenure of our Board members is eleven (11) years.
Key Qualifications, Skills and Attributes
The nominating and corporate governance committee regularly reviews the appropriate skills and characteristics required of Board members in the context of the composition of the Board, our operating requirements, and the long-term interests of stockholders. When conducting its review of the key qualifications, skills and attributes desired of Board members, the nominating and corporate governance committee particularly considers:
Senior Leadership Experience:Board members who have served in senior leadership positions, such as a chief executive officer, chairman, senior executive, or leader of significant operations, are important to us because they have the experience and perspective to analyze, shape and oversee the execution of important strategic, operational and policy issues. These Board members’ insights and guidance, and their ability to assess and respond to situations encountered by our Board, may be enhanced by leadership experience at complex businesses or organizations.
RNG and Conventional Natural
Gas and Industry Experience:
Because we are seeking to drive adoption of RNG and conventional natural gas as a vehicle fuel by fleet vehicle operators, primarily in the trucking, airport, refuse, public transit, industrial and institutional energy user and government fleet markets, relevant education or experience in our industry is key for understanding our markets, strategy, risk management and operations.

13


Government, Legal, Public Policy and Regulatory Expertise:Board members who have served in government positions provide experience and insights that help us work constructively with governments and address significant public policy issues. Board members with a background in law can assist the Board and legal team in fulfilling its oversight responsibilities regarding our legal and regulatory compliance and our engagement with regulatory authorities.
Financial Expertise:Knowledge of financial markets, financing and funding operations and accounting and financial disclosure and reporting processes is important to have well-represented on our Board. This experience helps our Board members in understanding and overseeing our capital structure, financing and investing activities, as well as our financial reporting and internal controls.
Public and Private Company
Board Experience:
Board members with public and private company board experience understand the dynamics and operations of a corporate board. These matters include the relationship of a company board with senior management personnel, the legal and regulatory landscape in which companies must operate, the importance of particular agenda and oversight issues, and how to oversee an ever-changing mix of strategic, operational and compliance-related matters.
From time to time, the nominating and corporate governance committee will be elected. Abstentionsalso consider such other qualifications, skills and broker non-votes, if any, will have no impactattributes as it deems appropriate given the needs of the Board and the Company to maintain a balance of knowledge, experience, background and capability.
Director Nominee Evaluations
At least annually, our nominating and corporate governance committee leads an evaluation of each of our directors and our Board as a whole and each of its committees. In evaluating whether a current director should continue to serve on our Board, the electionnominating and corporate governance committee considers a number of directors.

factors, including the minimum criteria and diversity goals described above and each director’s qualifications, skills and attributes in the areas identified by the committee as particularly important to our Board. In concluding that each of the director nominees should continue to serve as directors of the Company, the nominating and corporate governance committee considered their knowledge, experience and expertise in these areas as indicated in the table below, which they gained from their professional backgrounds described under “Director Nominees” above.

DirectorSenior
Leadership
Experience
RNG and
Natural Gas
Industry
Experience
Government,
Legal and
Regulatory
Expertise
Financial
Expertise
Company
Board
Experience
Andrew J. Littlefair
Stephen A. Scully
Lizabeth Ardisana
Karine Boissy-Rousseau
Patrick J. Ford
James C. Miller III
Kenneth M. Socha
Mathieu Soulas
Vincent C. Taormina
OUR BOARD RECOMMENDS A VOTE "FOR"“FOR ALL” THE ELECTION
TO THE BOARDDIRECTOR NOMINEES
NAMED IN THIS PROPOSAL 1

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PROPOSAL NO. 2
RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED
PUBLIC
ACCOUNTING FIRM

General
We are asking our stockholders to ratify the appointment of KPMG LLP as our independent registered public accounting firm for theour fiscal year ending December 31, 2016.2024. KPMG LLP has audited our financial statements annually since 2001. Representatives of KPMG LLP are expected to be present at the Annual MeetingMeeting. They will have the opportunity to answer appropriate questions and make a statement, shouldif they choosedesire to do so.

so, and respond to appropriate questions from stockholders.

Although our amended and restated bylaws do not require that our stockholders approve the appointment of our independent registered public accounting firm, we are submitting the selectionappointment of KPMG LLP to our stockholders for ratification as a matter of good corporate practice. If our stockholders vote against the ratification of the appointment of KPMG LLP, the audit committee of ourthe Board willmay consider whether to retain the firm. Even if our stockholders ratify the appointment of KPMG LLP, the audit committee of the Board may choose to appoint a different independent registered public accounting firm at any time during the year if the committee determines that such a change would, in its judgment, be in the best interests of our Company and our stockholders.

Independent Registered Public Accounting Firm Fees and Services

The following table presents fees forshows the audit of our annual consolidated financial statements as of and for the fiscal years ended December 31, 2014 and December 31, 2015, andaggregate fees billed to us for other services rendered by KPMG LLP during those periods.

the periods presented:
Year Ended December 31,
2022
($)
2023
($)
Audit Fees(1)1,866,2351,889,995
Audit-Related Fees
Tax Fees
All Other Fees
Total1,866,2351,889,995

 
 2014($) 2015($) 

Audit Fees(1)

  1,292,400  1,373,625 

Audit Related Fees(2)

     

Tax Fees(3)

  259,000  292,439 

All Other Fees(4)

     

Total

  1,551,400  1,666,064 

(1)

Audit Feesfees consist of fees billed for professional services rendered for the audit of our annual consolidated annual financial statements and review of theour interim condensed consolidated financial statements included in our quarterly reports, the audit of our internal control over financial reporting, audits of stand-alone financial statements of certain of our subsidiaries, professional services rendered in connection with our filing of various registration statements (i.e.,(such as registration statements on Form S-8 and Form S-3, including related comfort letters) and other professional services that are normally provided by KPMG LLP in connection with statutory and regulatory filings or engagements.

(2)
Audit Related Fees consist of fees billed for assurance and related services that are reasonably related to the performance of the audit or review of our consolidated financial statements and are not reported as Audit Fees. KPMG LLP rendered no such services for us during fiscal years 2014 and 2015.

(3)
Tax Fees consist of fees billed for professional services rendered for tax compliance, tax advice and tax planning (domestic and international). These services include assistance regarding federal, state and international tax compliance, acquisitions and international tax planning.

(4)
All Other Fees consist of fees billed for products and services other than the services described above. During fiscal years 2014 and 2015, there were no such services rendered to us by KPMG LLP.

Pre-Approval Policies and Procedures

        As a matter of policy,

Pursuant to our audit committee charter, all audit and permitted non-audit and tax services, as well as the fees and terms of such services, that are provided by our independent registered public accounting firm are approved in advancepre-approved by the audit committee of the Board, whichBoard. The audit committee may also delegate authority to grant pre-approvals to one or more audit committee members, provided that the pre-approvals are reported to the full audit committee at its regularly scheduled meetings. In considering such services for approval, the audit committee considers, among other things, whether the provision of non-auditthe services is compatible with maintaining such firm's independence. the independence of our independent registered public accounting firm.
All services provided by KPMG LLP during fiscal years 2014in 2022 and 20152023 were pre-approved by the audit committee. The audit committee has consideredin accordance with the role of KPMG LLP in providing services to us in our 2015 fiscal year and has concluded that such services are compatible with its independence as our auditor.

Required Vote and Board Recommendation

        Ratification of KPMG LLP as our independent registered public accounting firm requires the affirmative vote of the majority of the votes cast on this proposal by shares present in person or represented by proxy and entitled to vote on this proposal at the Annual Meeting. Accordingly, abstentions and broker non-votes, if any, will have no impact on the outcome of the vote on this proposal.

foregoing pre-approval policy.

OUR BOARD RECOMMENDS A VOTE "FOR"“FOR” THE RATIFICATION OF THE APPOINTMENT OF

KPMG LLP AS OUR INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM



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PROPOSAL NO. 3
ADVISORY, NON-BINDING VOTE TO APPROVE EXECUTIVE COMPENSATION
The Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (“Dodd-Frank Act”) enables our stockholders to vote to approve, on an advisory, non-binding basis, the compensation of our named executive officers as disclosed in this Proxy Statement in accordance with the SEC’s compensation disclosure rules.
As described in detail under “Compensation Discussion and Analysis” below, our executive compensation program is designed to attract, retain and motivate talented and dedicated executive officers; to reward individual performance and achievement of key corporate objectives without promoting excessive or unnecessary risk-taking; to align the interests of our executives with those of our stockholders; and to provide compensation that we believe is fair in light of an executive’s experience, responsibilities, performance and tenure with our Company and in relation to the compensation provided to other executives of our Company and certain peer companies. Under this program, determinations regarding each named executive officer’s compensation are based on, among other factors, the individual’s performance and contribution to our strategic plans and other business objectives; the Company’s overall performance, in light of business and industry conditions; general industry benchmarks and trends, including the compensation practices of certain peer companies; the level of the individual’s responsibility; the seniority of the individual; the individual’s long-term commitment to our Company; the available pool of individuals with similar skills; principles of pay equity and relative pay; the role of each compensation component in achieving the objectives of our executive compensation program; and the compensation committee’s business judgment and experience. Please read the “Compensation Discussion and Analysis” in this Proxy Statement for additional details about our executive compensation program.
We are asking our stockholders to indicate their support for our named executive officer compensation as described in this Proxy Statement. We believe the compensation of our named executive officers is appropriate and serves to both incentivize and retain our highly skilled executive leadership team. Attracting, retaining and motivating key executives is crucial to our success. This say-on-pay proposal gives our stockholders the opportunity to indicate whether they approve of our named executive officers’ compensation. This vote is not intended to address any specific component of compensation, but rather relates to the overall compensation of our named executive officers and our executive compensation philosophy, policies and practices described in this Proxy Statement in accordance with the SEC’s compensation disclosure rules. Accordingly, we ask that our stockholders vote “FOR” the following resolution at the Annual Meeting:
“RESOLVED, that the Company’s stockholders approve, on an advisory, non-binding basis, the compensation of the Company’s named executive officers, as disclosed in the Company’s Proxy Statement for its 2024 Annual Meeting of Stockholders pursuant to the compensation disclosure rules of the Securities and Exchange Commission, including the Compensation Discussion and Analysis, the Summary Compensation Table and the other related tables and disclosure included therein.”
This say-on-pay proposal is being provided as required by Section 14A of the Exchange Act and is advisory and therefore not binding on the Company, the compensation committee or our Board in any way. Our Board and our compensation committee value the opinions of our stockholders, and to the extent there is any significant vote against the named executive officer compensation as disclosed in this Proxy Statement, we will consider our stockholders’ concerns and the compensation committee will evaluate whether any actions are necessary to address these concerns.
At our 2023 Annual Meeting of Stockholders, a majority of stockholders voted to have a say-on-pay vote each year. As a result, we will conduct an advisory vote on executive compensation annually at least until the next stockholder advisory vote on frequency of such votes. It is expected that the next such say-on-pay vote will occur at the 2025 Annual Meeting of Stockholders.
OUR BOARD RECOMMENDS A VOTE “FOR” THE APPROVAL OF THE COMPENSATION OF
OUR NAMED EXECUTIVE OFFICERS, AS DISCLOSED IN THIS PROXY STATEMENT
PURSUANT TO THE COMPENSATION DISCLOSURE RULES OF THE SEC

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PROPOSAL 4
APPROVAL OF THE CLEAN ENERGY FUELS CORP.
2016
2024
PERFORMANCE INCENTIVE PLAN

General

At the Annual Meeting, we are asking our stockholders will be asked to approve the Clean Energy Fuels Corp. 20162024 Performance Incentive Plan (the "2016 Plan"“2024 Plan”), which was adopted, subject to stockholder approval, by theour Board on February 16, 2016.

March 27, 2024.

The Company believes that incentives and stock-based awards focus employees on the objective of creating stockholder value and promoting the success of the Company, and that incentive compensation plans like the proposed 20162024 Plan are an important attraction, retention and motivation tool for participants in the plan.

        Our current active equity compensation plan is

The Company currently maintains the Clean Energy Fuels Corp.Amended and Restated 2016 Performance Incentive Plan (the “2016 Plan”) and the Amended and Restated 2006 Equity Incentive Plan (the "2006 Plan"“2006 Plan”). As of April 4, 2016,March 15, 2024, a total of 14,358,62921,475,022 shares of the Company'sCompany’s common stock were then subject to outstanding awards granted under the 2016 Plan, a total of 894,550 shares of the Company’s common stock were then subject to outstanding awards granted under the 2006 Plan and an additional 1,674,526964,392 shares of the Company'sCompany’s common stock were then available for new award grants under the 20062016 Plan. The 2006 Plan is set to expire in 2016 in accordance with its terms.

        The

Our Board has approvedbelieves that the 2016 Plan to replace the 2006 Plan. We adopted the 2006 Plan before our initial public offering in 2007, and we believe the 2006 Plan contains several plan features that are no longer consistent with public company equity incentive plan best practices. For example, the 2006 Plan contains an "evergreen feature" that automatically increases thenumber of shares currently available for issuance under the 2006 Plan on the first day of each fiscal year and also permits repricing and cash buyouts of underwater options without stockholder approval. The 2016 Plan does not contain these plan features.

give the Company sufficient authority and flexibility to adequately provide for future incentives. If stockholders approve the 20162024 Plan, no new awards will be granted under the 20062016 Plan after the Annual Meeting. In addition,that case, the number of shares available for new award grants under the 2006 Plan on the date of the Annual Meeting (including sharesCompany’s common stock that have previously becomeremain available under the plan's evergreen feature) will no longer be available for new award grants under the 2016 Plan. In other words,Plan immediately prior to the shares available for new award grants under the 2006 PlanAnnual Meeting will not "pour over" and become available for award grants under the 20162024 Plan. Instead, the Company will lose the ability to grant these shares as equity compensation awards.

        If stockholders approve the 2016 Plan, a total of 6,050,000 newAn additional 4,000,000 shares of the Company'sCompany’s common stock will also be made available for awards grantedaward grants under the 20162024 Plan. In addition, if stockholders approve the 20162024 Plan, any shares of common stock subject to outstanding awards under the 20062016 Plan or the Clean Energy Fuels Corp. Amended and Restated 2002 Stock Option2006 Plan (the "2002 Plan") that expire, are cancelled, or otherwise terminate after the Annual Meeting will also be available for award grant purposes under the 20162024 Plan.

If stockholders do not approve the 20162024 Plan, the Company will continue to have the authority to grant awards under the 2006 Plan until its expiration on December 14, 2016 at which point the Company will lose the ability to grant stock-based awards to its employees.Plan. If stockholders approve the 20162024 Plan, the termination of our grant authority under the 20062016 Plan will not affect awards then outstanding under that plan or the 2002 Plan.

Key Features of the 2016 Plan

        Some of the key features of the 2016 Plan are highlighted below. This section is qualified in its entirety by the full text of the 2016 Plan, which appears asAnnex A to this Proxy Statement.

plan.

    No Evergreen Feature.  Unlike the 2006 Plan, the 2016 Plandoes not include any "evergreen feature" that automatically increases the shares available for issuance under the 2016 Plan each year.

    No Repricings Without Stockholder Approval.  Unlike the 2006 Plan, the 2016 Plan expressly prohibits the Company from repricing or buying-out options and stock appreciation rights ("SARs") without stockholder approval.

    Change in Control Definition.  The change in control provisions under the 2016 Plan require the actual occurrence of a qualifying transaction.

    No "Single Trigger" Change in Control Provision.  The 2016 Plan does not require automatic vesting of outstanding awards upon the occurrence of a change in control of the Company. Instead, outstanding awards may be assumed, exchanged, or otherwise continued following the change in control, and outstanding awards will only vest if they are not assumed, exchanged or otherwise continued and terminate in connection with the change in control, or if the terms of the individual awards require accelerated vesting.

    No Change in Control Gross-Ups.  The 2016 Plan does not include any gross-up payment for golden parachute excise taxes that may be triggered under Sections 280G and 4999 of the Internal Revenue Code (the "Code") as a result of a change in control of the Company.

    No Reload Options.  The 2016 Plan does not provide for the grant of reload options.

    No Liberal Share Recycling Provisions.  Any shares that are not issued or that are tendered back to the Company as payment for any options, SARs or other "full value" awards, as well as any shares withheld or tendered to satisfy tax withholding obligations related to options, SARs or other "full value" awards,will not again be available for new grants under the 2016 Plan. In addition, the gross number of shares for which a SAR award is exercised, and not the number of shares actually issued, will count against the share limits of the 2016 Plan. Any shares repurchased with the proceeds of any option exercise price will not be available for new grants under the 2016 Plan.

    Minimum Vesting.  Except as described below, all awards granted under the 2016 Plan must have a minimum vesting period of one year and no portion of an award may vest earlier than the first anniversary of the grant date of the award.

        Please see the following section for a more detailed summary of the principal terms of the 2016 Plan.

Summary Description of the 20162024 Performance Incentive Plan

The principal terms of the 20162024 Plan are summarized below. The following summary is qualified in its entirety by the full text of the 20162024 Plan, which appears asAnnex A to this Proxy Statement.

Purpose.   The purpose of the 20162024 Plan is to promote the success of the Company and the interests of our stockholders by providing an additional means for us to attract, motivate, retain and reward selected employees and other eligible persons through the grant of awards. Equity-based awards are also intended to further align the interests of award recipients and our stockholders.

        Administration.

Administration.   Our Board or one or more committees appointed by our Board will administer the 20162024 Plan. Our Board has delegated general administrative authority for the 20162024 Plan to the compensation committee. ACompensation Committee. The Board or a committee thereof (within its delegated authority) may delegate some or alldifferent levels of its authority with respect to the 2016 Plan to another committee of directors, and certain limited authority to different committees or persons with administrative and grant awards to employees may be delegated to one or more officers ofauthority under the Company.2024 Plan. (The appropriate acting body, be


it the Board or a committee or other person within its delegated authority, or an officer within his or her delegated authority is referred to in this proposal as the "Administrator"“Administrator”).

The Administrator has broad authority under the 20162024 Plan, including, without limitation, the authority:


to select eligible participants and determine the type(s) of award(s) that they are to receive;


17



to grant awards and determine the terms and conditions of awards, including the price (if any) to be paid for the shares or the award and, in the case of share-based awards, the number of shares to be offered or awarded;


subject to the minimum vesting requirements set forthdescribed below, to determine any applicable vesting and exercise conditions for awards (including any applicable performance-basedperformance and/or time-based vesting or exercisability conditions), and the extent to which such conditions have been satisfied, or determine that no delayed vesting or exercise is required, to determine the circumstances in which any performance-based goals (or the applicable measure of performance) will be adjusted and the nature and impact of any such adjustment, to establish the events (if any) on which exercisability or vesting may accelerate (including specified terminations of employment or service or other circumstances), and to accelerate or extend the vesting or exercisability or extend the term of any or all outstanding awards;

awards (subject in the case of options and stock appreciation rights to the maximum term of the award);

to cancel, modify, or waive the Company'sCompany’s rights with respect to, or modify, discontinue, suspend, or terminate any or all outstanding awards, subject to any required consents;


subject to the other provisions of the 20162024 Plan, to make certain adjustments to an outstanding award and to authorize the conversion, succession or substitution of an award;


to determine the method of payment of any purchase price for an award or shares of the Company'sCompany’s common stock delivered under the 20162024 Plan, as well as any tax-related items with respect to an award, which may be in the form of cash, check, or electronic funds transfer, by the delivery of already-owned shares of the Company'sCompany’s common stock or by a reduction of the number of shares deliverable pursuant to the award, by services rendered by the recipient of the award, by notice and third partythird-party payment or cashless exercise on such terms as the Administrator may authorize, or any other form permitted by law;


to modify the terms and conditions of any award, establish sub-plans and agreements and determine different terms and conditions that the Administrator deems necessary or advisable to comply with laws in the countries where the Company or one of its subsidiaries operates or where one or more eligible participants reside or provide services;


to approve the form of any award agreements used under the 20162024 Plan; and


to construe and interpret the 20162024 Plan, make rules for the administration of the 20162024 Plan, and make all other determinations necessary or advisable for the administration of the 20162024 Plan.

        All awards granted under the 2016 Plan are subject to a minimum vesting requirement of one year and no portion of any award may vest earlier than the first anniversary of the grant date of the award. This minimum vesting requirement does not apply to 5% of the total number of shares under the 2016 Plan and does not limit or restrict the Administrator's discretion to accelerate the vesting of any award in circumstances it determines to be appropriate.

No Repricing.   In no case (except due to an adjustment to reflect a stock split or other event referred to under "Adjustments"“Adjustments” below, or any repricing that may be approved by stockholders) will the Administrator (1) amend an outstanding stock option or stock appreciation right to reduce the exercise price or base price of the award, (2) cancel, exchange, or surrender an outstanding stock option or stock appreciation right in exchange for cash or other awards for the purpose of repricing the award, or (3) cancel, exchange, or surrender an outstanding stock option or stock appreciation right in exchange for an option or stock appreciation right with an exercise or base price that is less than the exercise or base price of the original award.


Minimum Vesting Requirement.   All awards granted under the 2024 Plan are subject to a minimum vesting requirement of one year and no portion of any award may vest earlier than the first anniversary of the grant date of the award. This minimum vesting requirement does not apply to 5% of the total number of shares under the 2024 Plan and does not limit or restrict the Administrator’s discretion to accelerate the vesting of any award in circumstances it determines to be appropriate.

Eligibility.   Persons eligible to receive awards under the 20162024 Plan include officers or other employees of the Company or any of its subsidiaries, directors of the Company, and certain consultants and advisors to the Company or any of its subsidiaries. Currently,As of March 15, 2024, approximately 970525 officers and other employees of the Company and its subsidiaries (including all of the Company'sCompany’s named executive officers), and each of the Company's eight non-employee directors,members of the Board who are not employed by the Company or any of its subsidiaries (“Non-Employee Directors”), were considered eligible under the 20162024 Plan.

        Authorized Shares; Limits on Awards.


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Aggregate Share Limit.   The maximum number of shares of the Company'sCompany’s common stock that may be issued or transferred pursuant to awards under the 20162024 Plan equals the sum of: (1) 6,050,000of the following (such total number of shares, the “Share Limit”):

4,000,000 shares, plus (2) 

the number of shares available for additional award grant purposes under the 2016 Plan as of the date of the Annual Meeting and determined immediately prior to the termination of the authority to grant new awards under that plan as of the date of the Annual Meeting, plus

the number of any shares subject to stock options granted under the 20022016 Plan or the 2006 Plan and outstanding as of the date of the Annual Meeting which expire, or for any reason are cancelled or terminated, after the date of the Annual Meeting without being exercised (which, for purposes of clarity, will become available for award grants under the 2024 Plan on a one-for-one basis), plus (3) 

the number of any shares subject to restricted stock and restricted stock unit awards granted under the 20022016 Plan or the 2006 Plan that are outstanding and unvested as of the date of the Annual Meeting which are forfeited, terminated, cancelled, or otherwise reacquired after the date of the Annual Meeting without having become vested (such total number of(with any such shares taken into account based on the "Share Limit")premium share-counting rule discussed below for full-value awards).
As of April 4,March 15, 2024, approximately 964,392 shares were available for additional award grant purposes under the 2016 zeroPlan, approximately 19,590,827 shares were subject to stock options then outstanding under the 2016 Plan, approximately 894,550 shares were subject to stock options then outstanding under the 2006 Plan and approximately 1,884,195 shares were subject to restricted stock and restricted stock unit awards then outstanding under the 2002 Plan and approximately 14,358,629 shares were subject to awards then outstanding under the 20062016 Plan. As noted above, no additional awards will be granted under the 20062016 Plan if stockholders approve the 20162024 Plan.

Shares issued in respect of any "full-value" award“full-value award” granted under the 20162024 Plan will be counted against the Share Limit as 1.5 shares for every one share actually issued in connection with the award. For example, if the Company granted a bonus of 100 shares of its common stock under the 20162024 Plan, 150 shares would be counted against the Share Limit with respect to that award. For this purpose, a "full-value" award“full-value award” generally means any award granted under the 20162024 Plan other than a stock option or SAR.

stock appreciation right.

Additional Share Limits.   The following other limits are also contained in the 2016 Plan:

    2024 Plan. These limits are in addition to, and not in lieu of, the Share Limit for the plan described above and, in the case of share-based limits, are applied on a one-for-one basis without applying the premium share-counting ratio for full-value awards discussed above.

The maximum number of shares that may be delivered pursuant to options qualified as incentive stock options granted under the plan is 6,050,0004,000,000 shares.

(For clarity, any shares issued in respect of incentive stock options granted under the plan will also count against the overall Share Limit above.)

The maximum number of shares subject to those options and SARsawards that are granted under the plan2024 Plan during any one calendar year to any one individualperson who, on the grant date of the award, is 2,000,000 shares.

The maximuma Non-Employee Director shall not exceed the number of shares subject to all awards that are granted under the plan during any one calendar year to any one individual is 2,000,000 shares.

The maximumproduce a grant date fair value for the award that, when combined with the grant date fair value of any other awards granted to a non-employee director under the 20162024 Plan during any onethat same calendar year to that individual in his or her capacity as a Non-Employee Director, is $400,000, exceptprovided that this limit will beis $600,000 as to (1) a non-employee independent directorNon-Employee Director who is serving as the Chairmanindependent Chair of the Board of Directors or theas a lead independent director (if there is one) at the time the applicable grant is made or (2) any new non-employee directorNon-Employee Director for the calendar year in which the non-employee director is first elected or appointed to the Board.Board of Directors. For purposes of this limit, the "grant“grant date fair value"value” of an award means the value of the award on the date of grant of the award determined using the equity award valuation principles applied in the Company'sCompany’s financial reporting. This limit does not apply to, and will be determined without taking into account, any award granted to an individual who, on the grant date of the award, is an officer or employee of the Company or one of its subsidiaries. This limit applies on an individual basis and not on an aggregate basis to all non-employee directorsNon-Employee Directors as a group.


19


Share-Limit Counting Rules.The maximum numberShare Limit of sharesthe 2024 Plan is subject to "Qualified Performance-Based Awards" under Section 5.2 of the 2016 Plan (as described in more detail below) granted during any one calendar year to any one participant (including Qualified Performance-Based Awards payable in shares and Qualified Performance-Based Awards payable in cash upon or following vesting ofrules:


      the award where the amount of such payment is determined with reference to the fair market value of a share at such time) is 2,000,000 shares (counting such shares on a one-for-one basis for this purpose). The maximum amount that may be paid to any one participant in respect of all Qualified Performance-Based Awards payable only in cash (other than the cash awards referred to in the preceding sentence) and granted to that participant in any one calendar year is $3,000,000.

        Except as described below, shares

Shares that are subject to or underlie awards which expire or for any reason are cancelled or terminated, are forfeited, fail to vest, or for any other reason are not paid or delivered under the 20162024 Plan will not be counted against the Share Limit and will again be available for subsequent awards under the 20162024 Plan. Shares that are exchanged by a participant or withheld by the Company as full or partial payment in connection with any award under the 2016 Plan (whether a stock option, SAR or other "full-value" award), as well as any shares exchanged by a participant or withheld by the Company or one of its subsidiaries to satisfy the tax withholding obligations related to any award (whether a stock option, SAR or other "full-value" award), will be counted against the Share Limit and will not be available for subsequent awards under the 2016 Plan. Any shares repurchased with the proceeds of any option exercise price shall not be available for awards under the 2016 Plan.

To the extent that shares are delivered pursuant to the exercise of a stock appreciation right granted under the 20162024 Plan, the total number of underlying shares assubject to which the exercise related willAward shall be counted against the Share Limit. (For purposes of clarity, if a stock appreciation right relates to 100,000 shares and is exercised at a time when the payment due to the participant is 15,000 shares, 100,000 shares willshall be charged against the Share Limit with respect to such exercise.) In addition, shares

Shares that are exchanged by a participant or withheld by the Company after the date of the Annual Meeting as full or partial payment in connection with any award granted under the 2002 Plan or the 20062024 Plan, as well as any shares exchanged by a participant or withheld by the Company after the date of the Annual Meeting to satisfy the tax withholding obligations related to any award granted under the 2002 Plan or the 20062024 Plan, will be counted against the Share Limit and will not again be available for newsubsequent awards under the 20162024 Plan.

To the extent that an award is settled in cash or a form other than shares, the shares that would have been delivered had there been no such cash or other settlement will not be counted against the Share Limit and will again be available for subsequent awards under the 20162024 Plan.

In the event that shares are delivered in respect of a dividend equivalent right, the actual number of shares delivered with respect to the award willshall be counted against the Share Limit. (For purposes of clarity, if 1,000 dividend equivalent rights are granted and outstanding when the Company pays a dividend, and 50 shares are delivered in payment of those rights with respect to that dividend, 75 shares (after giving effect to the "full-value" award premium counting rules) willshall be counted against the Share Limit.) Except as otherwise provided byLimit after giving effect to the Administrator, shares delivered in respect of dividend equivalent rights will not count against any individual award limit under the 2016 Plan other than the aggregate Share Limit. “full value award” counting ratio.)
In addition, the 20162024 Plan generally provides that shares issued in connection with awards that are granted by or become obligations of the Company through the assumption of awards (or in substitution for awards) in connection with an acquisition of another company will not count against the shares available for issuance under the 20162024 Plan. The Company may not increase the applicable share limits of the 20162024 Plan by repurchasing shares of common stock on the market (by using cash received through the exercise of stock options or otherwise).

Types of Awards.Awards.   The 20162024 Plan authorizes stock options, stock appreciation rights, and other forms of awards granted or denominated in the Company'sCompany’s common stock or units of the Company'sCompany’s common stock, as well as cash bonus awards. The 20162024 Plan retains flexibility to offer competitive incentives and to tailor benefits to specific needs and circumstances. Any award may be structured to be paid or settled in cash.


A stock option is the right to purchase shares of the Company'sCompany’s common stock at a future date at a specified price per share (the "exercise price"“exercise price”). The per share exercise price of an option generally may not be less than the fair market value of a share of the Company'sCompany’s common stock on the date of grant. The maximum term of an option is ten years from the date of grant. An option may either be an incentive stock option or a nonqualified stock option. Incentive stock option benefits are taxed differently from nonqualified stock options, as described under "U.S. Federal“Federal Income Tax Consequences of Awards Under the 2016 Plan"2024 Plan” below. Incentive stock options are also subject to more restrictive terms and are limited in amount by the U.S. Internal Revenue Code and the 20162024 Plan. Incentive stock options may only be granted to employees of the Company or a subsidiary.

A stock appreciation right is the right to receive payment of an amount equal to the excess of the fair market value of a share of the Company'sCompany’s common stock on the date of exercise of the stock appreciation right over the base price of the stock appreciation right. The base price will be established by the Administrator at the time of grant of the stock appreciation right and generally may not be less than the fair market value of a share of the Company'sCompany’s common stock on the date of grant. Stock appreciation rights may be granted in connection with other awards or independently. The maximum term of a stock appreciation right is ten years from the date of grant.

The other types of awards that may be granted under the 20162024 Plan include, without limitation, stock bonuses, restricted stock, performance stock, stock units or phantom stock (which are contractual rights to

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TABLE OF CONTENTS

receive shares of stock, or cash based on the fair market value of a share of stock), dividend equivalents which represent the right to receive a payment based on the dividends paid on a share of stock over a stated period of time, or similar rights to purchase or acquire shares, and cash awards.

Any awards under the 20162024 Plan (including awards of stock options and stock appreciation rights) may be fully-vested at grant or may be subject to time- and/or performance-based vesting requirements.

        Qualified Performance-Based Awards.    Under Section 162(m) of the Code ("Section 162(m)") a public corporation generally cannot take a tax deduction in any tax year for compensation it pays to its Chief Executive Officer and certain other executive officers in excess of $1,000,000. Compensation that qualifies as "performance-based" under Section 162(m), however, is excluded from the $1,000,000 limit if, among other requirements, the compensation is payable only upon attainment of pre-established, objective performance goals under a plan approved by the corporation's stockholders.

        The Administrator may grant awards under the 2016 Plan that are intended to be performance-based awards within the meaning of Section 162(m). Stock options and stock appreciation rights may qualify as performance-based awards within the meaning of Section 162(m). In addition, other types of awards authorized under the 2016 Plan (such as restricted stock, performance stock, stock units, and cash bonus opportunities) may be granted with performance-based vesting requirements and intended to qualify as performance-based awards within the meaning of Section 162(m) ("Qualified Performance-Based Awards"). While the Administrator may grant awards under the 2016 Plan that qualify (or are intended to qualify) as performance-based awards within the meaning of Section 162(m), nothing requires that any award qualify as "performance-based" within the meaning of Section 162(m) or otherwise be deductible for tax purposes.

        The vesting or payment of Qualified Performance-Based Awards will depend on the absolute or relative performance of the Company on a consolidated, subsidiary, segment, division, or business unit basis. The Administrator will establish the criterion or criteria and target(s) on which performance will be measured. To qualify an award as performance-based under Section 162(m), the Administrator must consist solely of two or more outside directors (as this requirement is applied under Section 162(m)), the Administrator must establish criteria and targets in advance of applicable deadlines under Section 162(m) and while the attainment of the performance targets remains substantially uncertain, and the Administrator must certify that any applicable performance goals and other material terms of the grant were satisfied. The performance criteria that the Administrator may use for this purpose will


include one or more of the following: earnings per share, cash flow (which means cash and cash equivalents derived from either net cash flow from operations or net cash flow from operations, financing and investing activities), stock price, total stockholder return, gross revenue, revenue growth, operating income (before or after taxes), net earnings (before or after interest, taxes, depreciation and/or amortization), return on equity or on assets or on net investment, cost containment or reduction, or any combination thereof. The performance measurement period with respect to an award may range from three months to ten years. The terms of the Qualified Performance-Based Awards may specify the manner, if any, in which performance targets shall be adjusted to mitigate the unbudgeted impact of material, unusual or nonrecurring gains and losses, accounting changes or other items specified by the Administrator at the time of establishing the goals.

        Qualified Performance-Based Awards may be paid in stock or in cash (in either case, subject to the limits described under "Authorized Shares; Limits on Awards" above). The Administrator has discretion to determine the performance target or targets and any other restrictions or other limitations of Qualified Performance-Based Awards and may reserve discretion to reduce payments below maximum award limits.

Dividend Equivalents; Deferrals.Deferrals.   The Administrator may provide for the deferred payment of awards, and may determine the other terms applicable to deferrals. The Administrator may provide that awards under the 20162024 Plan (other than options or stock appreciation rights), and/or deferrals, earn dividends or dividend equivalents based on the amount of dividends paid on outstanding shares of common stock,Common Stock, provided that any dividends and/or dividend equivalents as to any dividend equivalent rights granted in connection withthe portion of an award granted under the 2016 Plan that is subject to performance-basedunsatisfied vesting requirements no dividend equivalent payment will be made unlesssubject to termination and forfeiture to the related performance-based vesting conditionssame extent as the corresponding portion of the award to which they relate in the event the applicable vesting requirements are not satisfied (or, in the case of a restricted stock or similar award where the dividend must be paid as a matter of law, the dividend payment will be subject to forfeiture or repayment, as the case may be, if the related performance-based vesting conditions are not satisfied).

Assumption and Termination of Awards.Awards.   If an event occurs in which the Company does not survive (or does not survive as a public company in respect of its common stock), including, without limitation, a dissolution, merger, combination, consolidation, conversion, exchange of securities, or other reorganization, or a sale of all or substantially all of the business, stock or assets of the Company, awards then-outstanding under the 20162024 Plan will not automatically become fully vested pursuant to the provisions of the 20162024 Plan so long as such awards are assumed, substituted for or otherwise continued. However, if awards then-outstanding under the 20162024 Plan are to be terminated in such circumstances (without being assumed or substituted for), such awards would generally become fully vested (with any performance goals applicable to the award being deemed met at the “target” performance level), subject to any exceptions that the Administrator may provide for in an applicable award agreement (such as for awards subject to performance-based vesting requirements).agreement. The Administrator also has the discretion to establish other change in control provisions with respect to awards granted under the 20162024 Plan. For example, the Administrator could provide for the acceleration of vesting or payment of an award in connection with a corporate event or in connection with a termination of the award holder'sholder’s employment. For the treatment of outstanding equity awards held by the Named Executive Officersnamed executive officers in connection with a termination of employment and/or a change in control of the Company, please see the description under "Potential“Potential Payments Upon Termination or Change in Control"Control and Termination” below in this Proxy Statement.

Transfer Restrictions.Restrictions.   Subject to certain exceptions contained in Section 5.75.6 of the 20162024 Plan, awards under the 20162024 Plan generally are not transferable by the recipient other than by will or the laws of descent and distribution and are generally exercisable, during the recipient'srecipient’s lifetime, only by the recipient. Any amounts payable or shares issuable pursuant to an award generally will be paid only to the recipient or the recipient'srecipient’s beneficiary or representative. The Administrator has discretion, however, to establish written conditions and procedures for the transfer of awards to other persons or


entities, provided that such transfers comply with applicable federal and state securities laws and are not made for value (other than nominal consideration, settlement of marital property rights, or for interests in an entity in which more than 50% of the voting securities are held by the award recipient or by the recipient'srecipient’s family members).

        Adjustments.

Adjustments.   As is customary in incentive plans of this nature, each share limit and the number and kind of shares available under the 20162024 Plan and any outstanding awards, as well as the exercise or purchase prices of awards, and performance targets under certain types of performance-based awards, are subject to adjustment in the event of certain reorganizations, mergers, combinations, recapitalizations, stock splits, stock dividends, or other similar events that change the number or kind of shares outstanding, and extraordinary dividends or distributions of property to the stockholders.

No Limit on Other Authority.Authority.   Except as expressly provided with respect to the termination of the authority to grant new awards under the 20062016 Plan if stockholders approve the 20162024 Plan, the 20162024 Plan does not limit the authority of the Board of Directors or any committee to grant awards or authorize any other compensation, with or without reference to the Company'sCompany’s common stock, under any other plan or authority.


21


Termination of or Changes to the 2016 Plan.2024 Plan.   The Board may amend or terminate the 20162024 Plan at any time and in any manner. Stockholder approval for an amendment will be required only to the extent then required by applicable law or deemed necessary or advisable by the Board. Unless terminated earlier by the Board and subject to any extension that may be approved by stockholders, the authority to grant new awards under the 20162024 Plan will terminate on February 15, 2026.March 26, 2034. Outstanding awards, as well as the Administrator'sAdministrator’s authority with respect thereto, generally will continue following the expiration or termination of the plan. Generally speaking, outstanding awards may be amended by the Administrator (except for a repricing), but the consent of the award holder is required if the amendment (or any plan amendment) materially and adversely affects the holder.

U.S. Federal Income Tax Consequences of Awards under the 20162024 Plan

The U.S. federal income tax consequences of the 20162024 Plan under current federal law, which is subject to change, are summarized in the following discussion of the general tax principles applicable to the 20162024 Plan. This summary is not intended to be exhaustive and, among other considerations, does not describe the deferred compensation provisions of Section 409A of the U.S. Internal Revenue Code to the extent an award is subject to and does not satisfy those rules, nor does it describe state, local, or international tax consequences.

With respect to nonqualified stock options, the company is generally entitled to deduct and the participant recognizes taxable income in an amount equal to the difference between the option exercise price and the fair market value of the shares at the time of exercise. With respect to incentive stock options, the company is generally not entitled to a deduction nor does the participant recognize income at the time of exercise, although the participant may be subject to the U.S. federal alternative minimum tax.

The current federal income tax consequences of other awards authorized under the 20162024 Plan generally follow certain basic patterns: nontransferable restricted stock subject to a substantial risk of forfeiture results in income recognition equal to the excess of the fair market value over the price paid (if any) only at the time the restrictions lapse (unless the recipient elects to accelerate recognition as of the date of grant); bonuses, stock appreciation rights, cash and stock-based performance awards, dividend equivalents, stock units, and other types of awards are generally subject to tax at the time of payment; and compensation otherwise effectively deferred is taxed when paid. In each of the foregoing cases, the company will generally have a corresponding deduction at the time the participant recognizes income.


If an award is accelerated under the 20162024 Plan in connection with a "change“change in control" (ascontrol” ​(as this term is used under the U.S. Internal Revenue Code), the Companycompany may not be permitted to deduct the portion of the compensation attributable to the acceleration ("(“parachute payments"payments”) if it exceeds certain threshold limits under the U.S. Internal Revenue Code (and certain related excise taxes may be triggered). Furthermore, under Section 162(m) of the Code, the aggregate compensation in excess of $1,000,000 payable to current or former Named Executive Officers (including amounts attributable to awards that are not "performance-based" within the meaning of Section 162(m)equity-based and other incentive awards) may not be permitted to be deducteddeductible by the companyCompany in certain circumstances.

Specific Benefits under the 20162024 Performance Incentive Plan

The Company has not approved any awards that are conditioned upon stockholder approval of the 20162024 Plan. The Company is not currently considering any other specific award grants under the 2016 Plan.2024 Plan, other than the annual grants of stock options and restricted stock units to our Non-Employee Directors described in this Proxy Statement. If the 20162024 Plan had been in existence in fiscal 2015,2023, the Company expects that its award grants for fiscal 20152023 would not have been substantially different from those actually made in that year under the 20062016 Plan. For information regarding stock-based awards granted to the Company'sCompany’s named executive officers and non-employee directorsNon-Employee Directors during fiscal 2015,2023, see the material under "Compensation of Executive Officersthe heading “Executive Compensation” and Directors"“Director Compensation” below.

Potential Dilution

The following paragraphs include additional information to help you assess the potential dilutive impact of the Company'sCompany’s equity awards and the 20162024 Plan.
The 2002 Plan and the 2006 Plan are the Company's only equity compensation plans (other than the Company'sCompany’s Employee Stock Purchase Plan (the "ESPP")). The ESPP is intended as a qualified employee share purchase plan under Section 423 of the Code and generally provides for broad-based participation by employees of the Company (and certain of its subsidiaries) and affords employees who elect to participate

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an opportunity to purchase shares of the Company'sCompany’s common stock at a discount. Certain information regarding the number of shares of Company common stock available for issuance under the Company's ESPP is included under "Equity Compensation Plan Information" below. The discussion that follows in this "Potential Dilution"“Specific Benefits” section does not include any shares that have been purchased under, may be purchased in the current purchase period under, or that remain available for issuance or delivery under the Company's ESPP.

        "Overhang"Company’s Employee Stock Purchase Plan.

“Overhang” refers to the number of shares of the Company'sCompany’s common stock that are subject to outstanding awards or remain available for new award grants. The following table shows the total number of shares of the Company'sCompany’s common stock that were subject to outstanding restricted stock and restricted stock unit awards granted under the 2002 Plan and the 20062016 Plan, that were subject to outstanding stock options granted under the 20022016 Plan andor the 2006 Plan and that were then available for new award grants under the 20062016 Plan as of December 31, 20152023 and as of April 4, 2016.March 15, 2024. (In this 20162024 Plan proposal, the number of shares of the Company'sCompany’s common stock subject to restricted stock and restricted stock unit awards granted during any particular period or outstanding on any particular date is presented based on the actual number of shares of the Company'sCompany’s common stock covered by those awards and does not give effectbefore applying the provisions of the 2016 Plan for counting these awards against the plan’s share limit as 1.5 for every share actually issued pursuant to the new 1.5 to 1 fungible share counting ratio contained in the 2016 Plan.award. For awards subject to performance-based vesting requirements, such as the Price-Vested Units (as defined and described below under "Compensation Discussion and Analysis—Elements of Compensation—Equity Incentives")


the number of shares presented is based on achieving the maximum level of performance, even thoughperformance.)

As of December 31,
2023
As of March 15,
2024
Shares subject to outstanding restricted stock and restricted stock unit awards (excluding performance-based vesting awards)399,7091,884,195
Shares subject to outstanding performance-based vesting restricted stock and restricted stock unit awards
Shares subject to outstanding stock options (excluding performance-based vesting options)12,560,57715,239,127
Shares subject to outstanding performance-based vesting options5,265,0005,246,250
Shares available for new award grants6,250,580964,392
As of December 31, 2023, a total of 18,225,286 shares of the actual share payout for theseCompany’s common stock were subject to all outstanding awards may range from zerogranted under the Company’s equity compensation plans (including the shares then subject to outstanding awards under the maximum number below.)

 
 As of
December 31, 2015
 As of
April 4, 2016
 

Shares subject to outstanding restricted stock unit awards (excluding performance-based vesting awards)

  1,650,776  2,074,306 

Shares subject to outstanding performance-based vesting restricted stock unit awards

  1,769,000  554,000 

Shares subject to outstanding stock options

  11,487,938  11,730,323 

Shares available for new award grants

  262,461  1,674,526 

        Other than the 20022016 Plan and the 2006 Plan, as well as outstanding awards assumed by the Company in connection with acquisitions, but exclusive of shares that employees may purchase under the Employee Stock Purchase Plan), of which 399,709 shares were then subject to outstanding restricted stock and the Company's ESPP, we do not have any other compensatory plans or arrangements in place under whichrestricted stock unit awards (excluding performance-based vesting awards), 12,560,577 shares were then subject to outstanding stock options (excluding performance-based vesting options), and 5,265,000 shares were then subject to outstanding performance-based vesting options. As of March 15, 2024, a total of 22,369,572 shares of the Company'sCompany’s common stock are eligiblewere subject to be awarded or under which there areall outstanding awards with respectgranted under the Company’s equity compensation plans (including the shares then subject to shares of the Company's common stock. As described above, if stockholders approveoutstanding awards under the 2016 Plan no new awards will be granted underand the 2006 Plan, afteras well as outstanding awards assumed by the Annual Meeting, and theCompany in connection with acquisitions, but exclusive of shares available for new award grantsthat employees may purchase under the 2006 Plan listed in the table above will no longer be available for new award grants.

        AsEmployee Stock Purchase Plan), of April 4, 2016, the weighted average exercise price of our totalwhich 1,884,195 shares were then subject to outstanding restricted stock and restricted stock unit awards (excluding performance-based vesting awards), 15,239,127 shares were then subject to outstanding stock option awards was $11.26,options (excluding performance-based vesting options), and the weighted average remaining term of our total5,246,250 shares were then subject to outstanding stock awards was 4.55 years.

performance-based vesting options.

The weighted-average number of shares of the Company'sCompany’s common stock issued and outstanding in each of the last three fiscal years was 93,958,758213,118,694 shares issued and outstanding in 2013; 93,678,4322021; 222,414,790 shares issued and outstanding in 2014;2022; and 91,607,578222,904,785 shares issued and outstanding in 2015.2023. The number of shares of the Company'sCompany’s common stock issued and outstanding as of December 31, 20152023 and April 4, 2016March 15, 2024 was 92,382,717223,026,966 and 100,432,328223,263,055 shares, respectively. The weighted average number
As of shares outstanding includes certain warrants with aMarch 15, 2024, the weighted-average exercise price per shareexcluding performance-based vesting options was $5.06, and the weighted-average exercise price of $0.01 (penny warrants) that are treated as outstanding shares for purposesperformance-based vesting options was $6.77.

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As of our financial statements prepared in accordance with U.S. Generall Accepted Accounting Principles ("GAAP").

        "Burn rate"March 15, 2024, the weighted-average remaining term excluding performance-based vesting options was 7.25 years, and the weighted-average remaining term of performance-based vesting options was 7.73 years.

“Burn rate” refers to the number of shares that are subject to awards that we grant over a particular period of time. The total number of shares of the Company'sCompany’s common stock subject to awards that the Company granted under the 20062016 Plan in each of the last three fiscal years, and to date (as of April 4, 2016)March 15, 2024) for 2016,2024, are as follows:

144,336
12,425,031 shares in 20132021 (which was 0.2%5.83% of the weighted-average number of shares of the Company'sCompany’s common stock issued and outstanding in 2013)2021), of which 45,836898,771 shares were subject to restricted stock and restricted stock unit awards (excluding performance-based vesting awards), zero6,186,260 shares were subject to stock options (excluding performance-based vesting options), and 5,340,000 shares were subject to performance-based vesting restricted stock unit awards, and 98,500 shares were subject to stock options;

2,239,000
763,386 shares in 20142022 (which was 2.4%0.34% of the weighted-average number of shares of the Company'sCompany’s common stock issued and outstanding in 2014)2022), of which 792,50031,650 shares were subject to restricted stock and restricted stock unit awards (excluding performance-based vesting awards), 489,500 shares were subject to performance-based vesting restricted stock unit awards, and 957,000731,736 shares were subject to stock options;

options (excluding performance-based vesting options);
2,582,950
3,159,963 shares in 20152023 (which was 2.8%1.42% of the weighted-average number of shares of the Company'sCompany’s common stock issued and outstanding in 2015)2023), of which 1,167,750129,524 shares were subject to restricted stock and restricted stock unit awards (excluding performance-based vesting awards), zero shares were subject to performance-based vesting restricted stock unit awards, and 1,415,2003,030,439 shares were subject to stock options;options (excluding performance-based vesting options); and

4,733,850 shares in 20162024 through April 4, 2016March 15, 2024 (which was 0.9%2.12% of the number of shares of the Company'sCompany’s common stock issued and outstanding on April 4, 2016)March 15, 2024), of which 595,0001,748,000 shares were subject to restricted stock and restricted stock unit awards (excluding performance-based vesting awards), zero shares were subject to performance-based vesting restricted stock unit awards, and 276,2502,985,850 shares were subject to stock options.

options (excluding performance-based vesting options).

Thus, the total number of shares of the Company'sCompany’s common stock subject to awards granted under the 20062016 Plan per year over the last three fiscal years (2013, 2014(2021, 2022 and 2015)2023) has been, on average, 1.8%2.53% of the weighted-average number of shares of the Company'sCompany’s common stock outstanding.issued and outstanding for the corresponding year, and this percentage is consistent with the Company’s 2024 awards under the 2016 Plan through March 15, 2024 (which, as noted above, cover 2.12% of the number of shares of the Company’s common stock issued and outstanding shares on March 15, 2024. Performance-based vesting awards have been included above in the year in which the award was granted. The actual number of shares subject to performance-based vesting restricted stock unit awardsoptions that became eligible to vest each year because the applicable performance-based condition was satisfied in that year (subject to the satisfaction of any applicable time-based vesting requirements) was as follows: zero in 2013,2021, 410,000 in 2022, zero in 2014, zero in 2015,2023, and zero to date (as of April 4, 2016)March 15, 2024) in 2016.

2024.

The total number of shares of our common stock that were subject to awards granted under the 20022016 Plan, the 2006 Plan and the 20062002 Plan that terminated or expired, and thus became available for new award grants under the 20062016 Plan, in each of the last three fiscal years, and to date (as of April 4, 2016)March 15, 2024) in 2016,2024, are as follows: 533,830,1,323,796 in 2013, 794,9182021, 2,071,522 in 2014, 861,2842022, 569,096 in 2015,2023, and 1,283,315315,098 in 2016.

2024. Shares subject to 2016 Plan, the 2006 Plan and the 2002 Plan awards that terminated or expired and became available for new award grants under the 2016 Plan have been included when information is presented in this 2024 Plan proposal on the number of shares available for new award grants under the 2016 Plan.

The compensation committee of the BoardCompensation Committee anticipates that the 6,050,0004,000,000 additional shares requested for the 2024 Plan (together with the shares available for new award grants under the 2016 Plan (assumingon the Annual Meeting date and assuming usual levels of shares becoming available for new awards as a result of forfeitures of outstanding awards) will provide the Company with flexibility to continue to grant equity awards under the 20162024 Plan through approximately the end of 20192025 (reserving sufficient shares to cover potential payment of performance-based awards)awards at maximum payment levels). However, this is only an estimate, in the Company'sCompany’s judgment, based on current circumstances. The total number of shares that are subject to the Company'sCompany’s award grants in any one year or from year-to-year may change based on a number of variables,

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including, without limitation, the value of the Company'sCompany’s common stock (since higher stock prices generally require that fewer shares be issued to produce awards of the same grant date fair value), changes in competitors'competitors’ compensation practices or changes in compensation practices in the market generally, changes in the number of employees, changes in the number of directors and officers, whether and the extent to which vesting conditions applicable to equity-based awards are satisfied, acquisition activity and the need to grant awards to new employees in connection with acquisitions, the need to attract, retain and incentivize key talent, the type of awards the Company grants, and how the Company chooses to balance total compensation between cash and equity-based awards.

The closing market price for a share of the Company'sCompany’s common stock as of April 4, 2016March 15, 2024 was $2.94$2.52 per share.

    Equity Compensation Plan Information

        The Company currently maintains three equity compensation plans: the 2002 Plan, the 2006 Plan, and the ESPP, which are described below under "Compensation of Executive Officers and Directors—Equity Incentive Plans." Stockholders are also being asked to approve a new equity compensation plan, the 2016 Plan, as described above.

        The following table sets forth,

Vote Required for eachApproval of the Company's equity compensation plans, the number of shares of common stock subject to outstanding awards, the weighted-average exercise price of


outstanding options, and the number of shares remaining available for future award grants as of December 31, 2015.

Plan category
 Number of shares
of common stock
to be issued upon
exercise of
outstanding options,
warrants and rights
 Weighted-average
exercise price of
outstanding options,
warrants and rights
 Number of shares of
common stock remaining
available for future issuance
under equity compensation
plans (excluding shares
reflected in the first column)
 

Equity compensation plans approved by stockholders

  14,907,714(1)$11.44(2) 2,610,072(3)

Equity compensation plans not approved by stockholders

  N/A  N/A  N/A 

Total

  14,907,714 $11.44  2,610,072 

2024 Performance Incentive Plan
(1)
Of these shares, 11,487,938 were subject to options then outstanding under the 2006 Plan, 3,419,776 were subject to restricted stock unit awards then outstanding under the 2006 Plan, and zero were subject to options then outstanding under the 2002 Plan. The Company's authority to grant new awards under the 2002 Plan terminated effective upon the closing of the Company's initial public offering in 2007. This total includes 1,769,000 shares subject to performance-based vesting requirements based on achieving the maximum level of performance. Note that the actual number of shares to be issued with respect to these performance-based awards will vary depending on the applicable level of performance achieved, with such number ranging from zero to the maximum level indicated above.

(2)
This weighted-average exercise price does not reflect the 3,419,776 shares that will be issued upon the payment of outstanding restricted stock units.

(3)
Represents 262,461 shares available for future issuance under the 2006 Plan, and 2,347,611 shares available for future issuance under the ESPP, including 47,132 shares that were subject to purchase during the purchase period ending December 31, 2015. Shares available under the 2006 Plan may be used for any type of award authorized in that plan, including stock options, stock appreciation rights, and full-value awards. No new awards will be granted under the 2006 Plan if stockholders approve the 2016 Plan.

Required Vote and Board Recommendation

        TheOur Board believes that the adoption of the 20162024 Plan will promote the interests of the Company and its stockholders and will help the Company and its subsidiaries continue to be able to attract, retain and reward persons important to our success.

All members of the Board and all of the Company'sCompany’s executive officers are eligible for awards under the 20162024 Plan and thus have a personal interest in the approval of the 20162024 Plan.

        Approval of the 2016 Plan requires the affirmative vote of a majority of the votes cast on this proposal by shares present in person or represented by proxy and entitled to vote on this proposal at the Annual Meeting.

OUR BOARD RECOMMENDS THAT YOUA VOTE "FOR"“FOR” THE APPROVAL OF THE CLEAN ENERFY FUELS CORP. 20162024 PERFORMANCE INCENTIVE PLAN AS DESCRIBED ABOVE AND SET FORTH INANNEX A HERETO.



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CORPORATE GOVERNANCE

Director Independence

Board and Committee Composition
The following sets forth certain key features of the composition of our Board and its standing committees:
Board Committees
Board of
Directors
Audit(1)Compensation(1)Nominating
and
Corporate
Governance
Directors:
Andrew J. Littlefair
Stephen A. Scully (Chairman of the Board)I
Lizabeth ArdisanaIC
Karine Boissy-Rousseau
Patrick J. FordIF
James C. Miller IIIC; F
Kenneth M. Socha
Mathieu Soulas
Vincent C. TaorminaIC
Observer:
Anne de Peyrelongue(2)O
Meetings:
Held in 2023(3)4(4)443
I
Determined by our Board to be an independent director, within the meaning of applicable rules of Nasdaq.
C
Committee Chair.
F
Financial expert, as defined in the rules of Nasdaq and the SEC.
O
Observer.
(1)
Our Board has determined that Messrs. Mitchell, Herrington, Miller, O'Connor, Scully, Sochaeach member of the audit and Taorminacompensation committees satisfies the enhanced independence standards applicable to members of such a committee under, and, with respect to the compensation committee, considering the factors set forth in Nasdaq and SEC rules. In addition, our Board has determined that each member of the audit committee has sufficient knowledge in reading and understanding the Company’s financial statements to serve on such committee, and each member of the compensation committee is a non-employee director as defined in Rule 16b-3 under the Exchange Act and an outside director as defined in Section 162(m) of the Code.
(2)
Ms. de Peyrelongue, the Senior Vice President Corporate Affairs and Americas at TMS, was appointed as an observer of the audit committee in September 2021 pursuant to TMS’ director and observer designation rights, described under “Certain Relationships and Related Party Transactions” below.
(3)
Each director, other than Mr. Soulas, attended at least 75% of the total number of meetings of the Board and the applicable committees on which each he or she served that were held in 2023. Mr. Soulas was appointed at, and attended, the September 2023 meeting of the Board of Directors and was not able to attend the final meeting of the Board in 2023.
(4)
Our Board typically holds at least two executive sessions each year and held two such executive sessions in 2023.
Board Committees
We have established the following active committees: an audit committee, compensation committee, and nominating and corporate governance committee. Our Board also creates committees from time to time to oversee financing transactions or other significant corporate matters. Our Board and audit committee generally meet at least quarterly, and our other committees meet on an as-needed basis. Each of the Board committees has the responsibilities described below. Copies of the current charters of the audit committee, compensation committee, and nominating and corporate governance committee, as adopted by the Board, are accessible on our website at http://investors.cleanenergyfuels.com/corporate-governance.

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Audit Committee
We believe the functioning of our audit committee complies with all applicable requirements of the Sarbanes-Oxley Act of 2002 and with all applicable Nasdaq and SEC rules. The functions of this committee include:

Appointing, compensating, retaining, approving and overseeing the work of our independent registered public accounting firm;

Assessing the independence of our independent registered public accounting firm;

Discussing our annual audited and quarterly financial statements and the conduct of each audit with management, our internal finance department and our independent registered public accounting firm;

Overseeing our information technology and cybersecurity;

Establishing procedures for employees to anonymously submit concerns regarding accounting or auditing matters;

Periodically reviewing with our independent registered public accounting firm and with management our financial reporting processes and internal controls;

Based on its review and discussions with management, the internal finance staff and the independent auditor, recommending to the Board whether the Company’s financial statements should be included in the Company’s Annual Report on Form 10-K and any other annual report to stockholders;

Producing the audit committee report required by Item 407(d) of Regulation S-K for inclusion in the Company’s Annual Report or this Proxy Statement;

Discussing our policies with respect to risk assessment and risk management; and

Reviewing, overseeing and approving all related-party transactions (as such term is defined in applicable SEC rules).
Compensation Committee
We believe the functioning of our compensation committee complies with all applicable Nasdaq and SEC rules. The functions of this committee include:

Reviewing and approving all of our compensation plans, employment and severance agreements, policies and programs as they affect our executive officers;

Administering our equity incentive plans and employee stock purchase plans;

Retaining and assessing the independence of any compensation consultants or advisors;

Reviewing and approving the fees and other compensation paid to our independent directors;

Reviewing and discussing with management the Compensation Discussion and Analysis required to be included in this Proxy Statement and the Annual Report on Form 10-K, and, based on such review, recommending to the Board that the Compensation Discussion and Analysis be so included;

Producing the compensation committee report for inclusion in this Proxy Statement in compliance with the rules and regulations promulgated by the SEC;

Monitoring our compliance with the requirements under NASDAQ Marketplace Rule 5605(a)(2)the Sarbanes-Oxley Act of 2002 relating to loans to directors and officers, and with all other applicable laws affecting employee compensation and benefits; and

Overseeing our compliance with SEC rules and regulations regarding stockholder approval of certain executive compensation matters.

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The compensation committee may designate one or more subcommittees, each subcommittee to consist of two or more members of the compensation committee and may generally delegate its authority to any such subcommittee(s).

Nominating and Corporate Governance Committee
We believe the functioning of our nominating and corporate governance committee complies with all applicable Nasdaq and SEC rules. The functions of this committee include:

Developing and recommending to the Board criteria to be used in screening and evaluating potential director candidates;

Reviewing, evaluating and recommending to the Board qualified director candidates;

Establishing and overseeing a policy for considering stockholder nominees for director, and evaluating any such nominees;

Monitoring and reviewing any issues regarding director independence or involving potential conflicts of interest;

Reviewing and making recommendations about changes to the charters of other Board committees after consultation with the respective committee chairs;

Ensuring that continuing education is available for directors, at the Company’s cost;

Developing and recommending to the Board corporate governance guidelines and a code of ethics and reviewing and recommending changes to these documents as appropriate; and

Recommend to the Board from time to time other compliance policies and guidelines as appropriate or necessary to ensure compliance with applicable securities laws or regulations or securities listing requirements.
Board Leadership Structure

The Board has determined that our current structure of separating the roles of the Chairman of the Board and the Chief Executive Officer is in the best interests of the Company and our stockholders. Mr. MitchellScully has served as Chairman of the Board since May 2005January 2018; and Mr. Littlefair has been the Chief Executive Officer of the Company since June 2001. As Chairman of the Board, Mr. MitchellScully focuses on organizing Board activities to enable the Board to effectively provide guidance to and oversight (including risk oversight) and accountability of management. The Chairman of the Board, among other things, creates and maintains an effective working relationship with the Chief Executive Officer and other members of management and with the other members of the Board, provides the Chief Executive Officer ongoing direction regarding Board needs, interests and opinions, and assures thatensures the Board agenda is appropriately directed toward matters significant to the Company. Separating the roles of Chairman of the Board and Chief Executive Officer allows Mr. Littlefair, as Chief Executive Officer, to focus on carrying outmanaging the day-to-day direction and implementing the long-term strategic goals of the Company.

The functions of the Board are carried out by the full Board and, when delegated, by the BoardBoard’s committees. Each director is a full and equal participant in the major strategic and policy decisions of our Company.

Board Committees

        We have an audit committee, compensation committee, nominating and corporate governance committee, derivative committee and stock option committee. Our Board also creates committees from time to time to approve financing transactions or other significant corporate transactions. Our Board and audit committee generally meet at least quarterly and our other committees meet on an as-needed basis. Each of the Board committees has the composition and responsibilities described below. Current copies of the charters of the audit committee, the compensation committee and the nominating and corporate governance committee, which have been adopted by the Board, are posted on our website athttp://investors.cleanenergyfuels.com/corporate-governance.cfm.

Audit Committee

        Our audit committee consists of four directors, John S. Herrington, James C. Miller III, Stephen A. Scully and Vincent C. Taormina, all of whom our Board has determined to be independent under Rule 10A-3(b)(1) under the Exchange Act and NASDAQ Marketplace Rules 5605(a)(2) and 5605(c)(2). The chair of the audit committee is Mr. Miller. Our Board has determined that Mr. Miller qualifies as an "audit committee financial expert" under the rules of NASDAQ and the SEC, and that each audit committee member has sufficient knowledge in reading and understanding the Company's financial statements to serve on the audit committee. The audit committee held six meetings during our 2015 fiscal year. The functions of the audit committee include:

    appointing, compensating, retaining and overseeing the work of our independent registered public accounting firm;

    assessing the independence of our independent registered public accounting firm;

      discussing our annual audited and quarterly financial statements and each audit with management, our internal finance staff and our independent registered public accounting firm;

      establishing procedures for employees to anonymously submit concerns regarding accounting or auditing matters;

      periodically reviewing with our independent registered public accounting firm and with management our financial reporting processes and internal controls;

      monitoring our policies with respect to risk assessment and risk management; and

      reviewing all related-party transactions (as such term is defined in applicable SEC rules).

            We believe that the composition of our audit committee meets the criteria for independence and financial expertise under, and the functioning of our audit committee complies with the applicable requirements of, the Sarbanes Oxley Act of 2002 and NASDAQ and SEC rules.

    Compensation Committee

            Our compensation committee consists of four directors, John S. Herrington, Warren I. Mitchell, James E. O'Connor and Kenneth M. Socha, all of whom our Board has determined to be independent under Rule 10C-1(b)(1) under the Exchange Act and NASDAQ Marketplace Rule 5605(a)(2), in light of the factors set forth in NASDAQ Marketplace Rule 5605(d)(2). The chair of the compensation committee is Mr. Mitchell. The compensation committee held four meetings during our 2015 fiscal year. The compensation committee may designate one or more subcommittees, each subcommittee to consist of two or more members of the compensation committee, and may generally delegate its authority any such subcommittee(s). The functions of the compensation committee include:

      reviewing and approving all of our compensation plans, policies and programs as they affect our executive officers;

      administering our equity incentive plans and employee stock purchase plans;

      retaining and assessing the independence of any compensation consultants or advisors;

      reviewing and approving policies, practices, and procedures relating to the compensation of our directors;

      monitoring our compliance under the Sarbanes-Oxley Act of 2002 relating to loans to directors and officers, and with all other applicable laws affecting employee compensation and benefits; and

      overseeing our compliance with SEC rules and regulations regarding stockholder approval of certain executive compensation matters.

            We believe that the composition of our compensation committee meets the criteria for independence under, and the functioning of our compensation committee complies with the applicable requirements of, NASDAQ and SEC rules.

    Nominating and Corporate Governance Committee

            Our nominating and corporate governance committee consists of four directors, John S. Herrington, James E. O'Connor, Kenneth M. Socha, and Vincent C. Taormina, all of whom our Board has determined to be independent under NASDAQ Marketplace Rule 5605(a)(2). The chair of the nominating and corporate governance committee is Mr. Herrington. The nominating and corporate


    governance committee held two meetings during our 2015 fiscal year. The functions of the nominating and corporate governance committee include:

      developing and recommending to the Board criteria for evaluating potential director candidates;

      reviewing, evaluating and recommending to the Board qualified director candidates;

      establishing and overseeing a policy for considering stockholder nominees for directors, and evaluating any such nominees;

      monitoring and reviewing any issues regarding director independence or potential conflicts of interest; and

      developing and recommending to the Board corporate governance guidelines and a code of ethics and recommending changes as appropriate.

            We believe that the composition of our nominating and corporate governance committee meets the criteria for independence under, and the functioning of our nominating and corporate governance committee complies with the applicable requirements of, NASDAQ and SEC rules.

    Derivative Committee

            Our derivative committee consists of three directors, Andrew J. Littlefair, James C. Miller III and Warren I. Mitchell. The chair of the derivative committee is Mr. Littlefair. The derivative committee did not meet during our 2015 fiscal year. The functions of the derivative committee include:

      formulating our derivative strategy and directing our derivative activities;

      engaging and meeting with advisors regarding our derivative strategy and activities; and

      making recommendations to the Board regarding our derivative strategy and activities.

    Stock Option Committee

            Our stock option committee consists of two directors, Andrew J. Littlefair and Warren I. Mitchell. Subject to certain restrictions, this committee is authorized to grant stock options and restricted stock units under the 2006 Plan to new employees of the Company. The stock option committee held two meetings during our 2015 fiscal year.

    Meetings of the Board

            During our 2015 fiscal year, our Board held six meetings and each director attended at least 96% of the total number of meetings of the Board and all applicable committees held during the period in 2015 when he served. Our directors typically hold at least two executive sessions without management present each year, and held two such executive sessions during our 2015 fiscal year.

    The Board's Role in Risk Oversight

            The Board

    Risk is inherent in every business. We face a number of risks, including business, operational, strategic, competitive, financial, political, legislative, environmental, safety and each of the Board committees regularly discussesregulatory risks, confronting our business in the context of the review and approval of corporate and financial risk management policies, corporate strategy,as well as risks related to compensation, cybersecurity threats or incidents, capital expenditures, derivative transactions, commodity-based exposures, acquisitions or other strategic transactions compensation, capital expenditures, derivative transactions,and financing and other liquidity matters. In general, our management is responsible for the day-to-day management of the risks we face, while our Board, as a whole and through its committees, is responsible for the oversight of risk management.
    In its risk oversight role, the Board and each of its committees regularly review and discuss, internally and with management, the material short-, intermediate-, and long-term risks confronting our business,

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    based on reports prepared and delivered by management and outside advisors that address these risks and other information deemed relevant. The Board also monitors our risk management and corporate governance policies, including the day-to-day risk management processes designed and financing matters. Whenimplemented by management, and generally evaluates how management operates our Company with respect to risk exposures. These risks and risk management policies are also reviewed and analyzed in depth by the Board at an annual strategic planning session with members of senior management. Due to the dynamic nature of risk and the business environment generally, management regularly updates the Board on key enterprise risks. Board and committee agendas and meeting materials are updated throughout the year so that emerging enterprise risks may be reviewed and discussed at the relevant times. This process facilitates the Board’s ability to fulfill its oversight responsibilities of the Company’s risks in a timely and effective manner. The Board considers the risks and vulnerabilities we face when granting authority to management and approving business strategies and marketing strategies, theparticular transactions.
    The Board considers, among other things, the risks and vulnerabilities we face. Additionally, the Board holds annual strategic planning sessions with senior management in which our directors review and analyze, among other items, political and legislativeperforms its risk environmental and regulatory risk, commodity based exposures, the competitive landscape and the risks associated with depending on third parties to assist in developing


    our industry, such as in connection with the manufacture of engines for heavy-duty trucks and other vehicles that operate on natural gas and production of renewable natural gas ("RNG"). Our Board also regularly reviews our cash management practices and budget variances. Members of management prepare regular reports for the Board that address the risks confronting our business, which are reviewed at Board meetings.

            As part of its oversight function the Board monitors how management operates the Company, in part through its committee structurecommittees, which are comprised solely of independent directors. Each Board committee’s risk oversight role is as follows:


    The audit committee considers risk issues associated withoversees management of risks related to our overall financial reporting, and disclosure processes and accounting policies, and periodically meets withinformation technology and receives reports from management to discuss these risks.

    cybersecurity, as well as any related party or conflict-of-interest transactions;

    The compensation committee is responsible for oversightoversees management of risk associated withrisks related to our compensation practices and policies.

    policies; and

    The nominating and corporate governance committee is responsible for oversightoversees management of risks related to Board processes and composition, including director independence, and corporate governance-related risks.

    The derivative committee oversees the Company's derivative activities in an effort to minimize financial risk associated with fixed-price sales contracts and commodity hedging activity.

    governance matters.

    Code of Ethics

    We have adopted a written code of ethics applicable to our directors, officers and other employees, in accordance with the rules of NASDAQincluding our principal executive, financial and the SEC, which sets forth standards for how we work together within the Company, how we protect the value of the Company,accounting officers and how we work with customers, suppliers, and others. Ourcontroller or persons performing similar functions. This code of ethics is designedestablishes policies to deter wrongdoing and to promote:

      promote honest and ethical conduct and fair dealing;

      full, fair, accurate, timely and understandable disclosure in reports and documents that we file with the SEC and in our other public communications;

      complianceis designed to comply with applicable laws, rulesNasdaq and regulations;

      the avoidance and ethical handling of any actual or apparent conflicts of interest; and

      accountability for adherence to the code and prompt internal reporting of violations of the code.

    SEC rules. The nominating and corporate governance committee of our Board reviews our code of ethics periodically and may propose or adopt additions or amendments that it determines are required or appropriate.

    Our code of ethics is postedaccessible on our website at
    http://investors.cleanenergyfuels.com/corporate-governance.cfm
    corporate-governance.

    We expect that any amendments to or waivers from certain provisions of our code of ethics applicable to any principal executive, financial or accounting officer or controller or persons performing similar functions will be disclosed on our website to the extent required by applicable Nasdaq or SEC rules.

    Corporate Governance Guidelines

    We have adopted written corporate governance guidelines that set forth standards for director qualifications and responsibilities, Board committees, Board leadership structure, director compensation, director orientation and continuing education, Chief Executive Officer evaluation and management succession, Board self-evaluations, Board oversight of the Company'sCompany’s strategic planning, and director and officer stock ownership, among other things. The nominating and corporate governance committee reviews our corporate governance guidelines periodically and may from time to time propose or adopt additions or amendments that it determines are required or appropriate. Our corporate governance guidelines are postedaccessible on our website athttp://investors.cleanenergyfuels.com/corporate-governance.cfmcorporate-governance.


    Board Evaluations

    Director Stock Ownership Guidelines

            We believe that it is important to encourage

    At least annually, our nominating and corporate governance committee leads an evaluation of each of our directors to hold sharesand our Board as a whole and each of its committees. As part of this evaluation, the Board considers the areas in which the Board believes it could improve. Each of our common stock, which links their long-term economic interest directlycommittees also conducts an evaluation of itself at least annually.

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    Board Diversity Matrix (as of April 4, 2024)
    While our Board has no formal policy for the consideration of diversity in identifying director nominees, the nominating and corporate governance committee seeks to have a board of directors that will reflect a balance of our stockholders.experience, qualifications, diversity, attributes and skills desirable for the Board as a whole. To achieve this, goal, we have established stock ownership guidelines applicablethe nominating and corporate governance committee considers individuals from various disciplines and backgrounds in recommending director nominees to the Board, including diversity characteristics that may be self-identified by directors or director nominees, such as race, gender, military service, or other socioeconomic or demographic characteristics.
    Board Size
    Total Number of Directors9
    Part I: Gender IdentityFemaleMaleNon-BinaryDid Not
    Disclose
    Gender
    Directors27
    Part II: Demographic Background
    African American or Black
    Alaskan Native or American Indian
    Asian
    Hispanic or Latinx1
    Native Hawaiian or Pacific Islander
    White17
    Two or More Races or Ethnicities
    LGBTQ+
    Did Not Disclose Demographic Background
    Chief Executive Officer Evaluation and Management Succession
    Our Board works with our nominating and corporate governance committee to evaluate potential successors to our directors. These guidelines provideChief Executive Officer and to ensure that the Chairmana Chief Executive Officer succession plan is in place. Our Chief Executive Officer also makes available his recommendations and evaluations of the Board is required to own 10,000 shares of our common stock and each other independent director is expected to own at least 5,000 shares of our common stock during their term of servicepotential successors, as a director. Current and future directors must attainwell as reviews any development plans recommended for such level of ownership by the last to occur of (i) December 13, 2017 and (ii) five years after the date of initial election or appointment to the Board. Stock options and other rights to acquire Company common stock are not counted toward satisfaction of the stock ownership requirements. Each of our directors have satisfied these stock ownership guidelines as of the date of this Proxy Statement.

            We have also established stock ownership guidelines applicable to our executive officers, which are described under "Compensation Disclosure and Analysis—Executive Stock Ownership Guidelines."

    Compensation Committee Interlocks and Insider Participation

            Our compensation committee consists of Messrs. Herrington, Mitchell, O'Connor and Socha. No member of our compensation committee is a present or former executive officer or employee of the Company or any of its subsidiaries or has any relationship requiring disclosure below under "Certain Relationships and Related Party Transactions" pursuant to SEC rules. During our 2015 fiscal year, no executive officer of our Company (1) served as a member of the compensation committee (or other board committee performing equivalent functions or, in the absence of any such committee, the entire board) of another entity, one of whose executive officers served on our Company's compensation committee, (2) served as a director of another entity, one of whose executive officers served on our Company's compensation committee, or (3) served as a member of the compensation committee (or other board committee performing equivalent functions or, in the absence of any such committee, the entire board) of another entity, one of whose executive officers served as a director of our Company.

    individuals.

    Stockholder Communications with the Board

    We have adopted a formal process by which stockholders and interested parties may communicate with our Board, which is postedaccessible on our website athttp:
    https://investors.cleanenergyfuels.com/contactboard.cfm
    corporate-governance/contact-the-board. This centralized process assists the Board in reviewing and responding to communications from stockholders and other interested parties in an appropriate manner. Communications to the Board must be in writing and either mailed care of theto our Corporate Secretary at the address of our principal executive offices. The communication can be addressed to our offices at 4675 MacArthur Court, Suite 800, Newport Beach, California 92660,one or delivered electronically via our website. This centralized process will assistmore individual directors or to the Board in reviewingas a group, and responding to stockholder and interested party communications in an appropriate manner. Thethe name of any specific intended recipientrecipient(s) should be noted in the communication. Communications submitted by postal mail may be anonymous. The Corporate Secretary typically reviews all such communications and will forward such correspondencethem to the Board; however, before forwardingBoard or any correspondence, the Corporate Secretary will reviewidentified individual director(s), unless any such correspondence and will not forward certain items if they arecommunication is deemed to be, in the Corporate Secretary'sSecretary’s discretion, unrelated to the duties and responsibilities of the Board or unduly hostile, threatening, illegal or similarly unsuitable or otherwise inappropriate for Board consideration.

    Stockholder Recommendations

    Director Nomination Process
    Our Board, as a whole and through our nominating and corporate governance committee, is responsible for Membership onidentifying, evaluating and recommending nominees to serve as directors of our Board

    Company.


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    Identifying and Evaluating Director Nominees
    Our nominating and corporate governance committee is responsible for identifying individuals qualified to become members of the Board and recommending these candidates to our Board for nomination or appointment. Our nominating and corporate governance committee may utilize a variety of methods to identify potential director candidates. For example, candidates may come to the attention of the nominating and corporate governance committee through current members of the Board, executive officers, professional search firms, stockholders or others. These candidates may be evaluated and considered by our nominating and corporate governance committee at any point during the year, including in connection with each annual meeting of our stockholders. For each such annual meeting, the nominating and corporate governance committee recommends to our Board certain director nominees to stand for election at the annual meeting based on the committee’s evaluation of all potential director candidates, including incumbent directors. The Board then selects its director nominees based on its determination, relying on the recommendation of and other information provided by the nominating and corporate governance committee as it deems appropriate, of the suitability of each potential director candidate to serve as a director of our Company.
    Stockholder Recommendations of Director Candidates
    In accordance with its charter, our nominating and corporate governance committee is responsible for considering and evaluating properly submitted stockholder recommendations of candidates for membership onBoard membership. Any such recommendation of director candidates for nomination by the Board in accordanceconnection with our next annual meeting of stockholders should be made in writing and delivered or mailed to our Corporate Secretary at the committee's charteraddress of our principal executive offices, and should include the name, address and a current resume of the proposed director candidate, a statement describing the candidate’s qualifications and consent to serve on our Board if selected as described below under "Identifyinga director nominee, and Evaluating Director Nominees."contact information for personal and professional references. The submission should also include the name and address of the stockholder who is submitting the proposed director candidate, the number of shares of our common stock that are owned of record or beneficially by the submitting stockholder and a description of all arrangements or understandings between the submitting stockholder and the proposed director candidate. We may also request that any proposed director candidate and any stockholder proposing a director candidate furnish us with such other information as may reasonably be required for our nominating and corporate governance committee to determine the eligibility of such proposed director candidate to serve as a director of our Company.
    All properly submitted stockholder recommendations will be aggregated together and with any other director candidates proposed by other sources, for consideration and evaluation by our nominating and corporate governance committee and will receive the same consideration by our nominating and corporate governance committee as is received by any other director candidate. In evaluating such recommendations,all director candidates, the nominating and corporate governance committee will consider, among other things, the membership criteriadirector qualifications set forth in our corporate governance guidelines, andas described below under "Director Qualifications."in “Proposal 1: Election of Directors” above. Any stockholder recommendations


    proposed for considerationstockholder-recommended director candidate that is selected by theour nominating and corporate governance committee should includewould be recommended by the nominee's namecommittee as a director nominee to the Board, which would then consider and evaluate the candidate in the same manner and based on the same criteria and qualifications for membershipas other prospective director candidates. If approved by the Board, the stockholder-recommended candidate would be appointed as a director to a vacant seat on the Board and should be addressed to: Corporate Secretary, Clean Energy Fuels Corp., 4675 MacArthur Court, Suite 800, Newport Beach, California 92660.

            In accordanceor included in the Board’s slate of director nominees to stand for election at our next annual meeting of stockholders.

    Stockholder Nominations of Directors
    A stockholder who wishes to nominate a director must comply with theall applicable requirements ofset forth in our amended and restated bylaws,bylaws. In accordance with these requirements, any recommendationstockholder nomination of a director candidatemust be made in writing and delivered to or mailed and received by our Corporate Secretary at the address of our principal executive offices within a stockholderspecified time period before the annual meeting of stockholders at which the director nominee is to be up for election. See “Stockholder Proposals for 2025 Annual Meeting” below for information about these time periods in connection with our 2025 annual meeting of stockholders. Any such recommendation must include a statement in writing setting forth the following:

                (i)  following information:


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    as to each person whom the stockholder proposes to nominate for election or re-election as a director:


    the name, age, business address and residence address of such person;


    the principal occupation or employment of such person;


    the class and number of shares of our capital stock that are beneficially owned by such person;


    a description of all arrangements or understandings between the stockholder and such person and any other person or persons (naming such person or persons) pursuant to which the nominations are to be made by the stockholder; and


    any other information relating to thesuch person that is required to be disclosed in solicitations of proxies for electionelections of directors, or is otherwise required, in each case pursuant to Regulation 14A under the Exchange Act (including without limitation such person'sperson’s written consent to being named in the proxy statement,Proxy Statement, if any, as a nominee and to serving as a director if elected);

             (ii)  


    as to the stockholder sendingmaking the recommendation, the name and address of record address of the stockholder, the class and number of shares of the Company'sCompany’s capital stock that are beneficially owned by the stockholder, any material interest of the stockholder in the nomination and any other information that is required to be provided by the stockholder pursuant to Regulation 14A under the Exchange Act;Act in connection with his recommendation of a director candidate; and

            (iii)  


    as to the stockholder givingmaking the noticerecommendation and any Stockholder Associated Person (as defined below) or any member of such stockholder'sstockholder’s immediate family sharing the same household, (1) whether and the extent to which any Relevant Hedge Transaction (defined below) has been entered into by or on behalf of any such person, (2) whether and the extent to which any such person has direct or indirect beneficial ownership of any Derivative Instrument (defined below) is directly or indirectly beneficially owned,, (3) any rights to dividends on our shares owned beneficially by any such person that are separated or separable from the underlying shares, (4) any proportionate interest in our shares or Derivative Instruments held, directly or indirectly, by a general or limited partnership in which any such person is a general partner or, directly or indirectly, beneficially owns an interest in a general partner and (5) any performance-related fees (other than an asset-based fee) to which any such person is entitled based on any increase or decrease in the value of our shares or Derivative Instruments, if any, as of the date of such noticethe recommendation (which information shall be supplemented by such stockholder and beneficial owner, if any, not later than 10 days after the record date for the meeting to disclose such ownership as of the record date).

      , where, for purposes of these requirements, the following terms have the following meanings:

    A "Stockholder“Stockholder Associated Person"Person” of any stockholder meansis (i) any person controlling or controlled by, directly or indirectly, or acting in concert with, such stockholder, (ii) any beneficial owner of shares of our stock owned of record or beneficially by such stockholder and (iii) any person controlling, controlled by or under common control with such Stockholder Associated Person;

    A "Relevant“Relevant Hedge Transaction"Transaction” is any hedging or other transaction or series of transactions, or any other agreement, arrangement or understanding (including, but not limited to, any short position or any borrowing or lending of shares of stock), the effect or intent of which is to mitigate loss or increase profit to or manage the risk or benefit of stock price changes for, or to increase or decrease the voting power of, a stockholderany person with respect to any share of our stock; and

    "Derivative Instrument" means
    A “Derivative Instrument” is any option, warrant, convertible security, stock appreciation right, or similar right with an exercise or conversion privilege or a settlement payment or mechanism at a price related to any class or series of our shares, whether or not such instrument or right shall be subject to settlement in the underlying class or series of our capital stock or otherwise, or any other direct or indirect opportunity to profit or share in any profit derived from any increase or decrease in the value of our shares.


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    Sustainability
    Our vision is to deliver renewable transportation fuel for a cleaner, safer, more equitable tomorrow. We may require any proposed nomineelaunched our strategy and goals to furnish such other information as may reasonably be required by usdrive progress across three pillars: fueling the transition to determinerenewable energy in transportation, building the eligibilityworkforce for the future of such proposed nomineerenewable energy, and advancing smart policies that drive the transformation to serve as a director.

    Director Qualifications

            Under its committee charter andrenewable fuels.

    In 2023, we continued to focus on building trusted partnerships with our corporate governance guidelines,stakeholders to help achieve progress towards our nominating and corporate governance committee is responsible for reviewing with the Board, on an annual basis, the requisite skills and characteristics of new Board membersgoals, as well as the compositionon improving our operations to align with our sustainability goals. We recognize that our environmental impact includes more than our products and that we must foster a culture of sustainability in everything we do. Each of the Board as a whole. This assessment includes an analysis of each member's qualification as an independent director, as well as consideration of diversity, age, skills, and experience in the context of the needs of the Board. Our corporate governance guidelines also provide that no director for our Company may serve on more than three other public company boards of directors, unless approved in advance by the Board.

            Allpillars of our directors bring to our Board a wealth of executive leadership experience derived from their service as executives, senior government officials and board members of other organizations. Certain experience, attributes, qualifications and skills of eachsustainability strategy incorporates parts of our directorsown business operations, to ensure that contribute toour advocacy and external progress in sustainability is aligned with our internal operations. In the Board's effectiveness aswinter of 2023, we published a whole are as follows:

            Andrew J. Littlefair.    Mr. Littlefair's experience as co-founder and Chief Executive Officersustainability report that is posted on our website at www.cleanenergyfuels.com, which highlights the efforts of our Company gives him unique insight into our Company's operations, challenges and opportunities.

            Warren I. Mitchell.    Mr. Mitchell has extensive knowledge ofdifferent teams across the natural gas industry obtained during his long and distinguished career at the Southern California Gas Company, including his service as its President and Chairman. Mr. Mitchell remains actively involved in the energy industry through his role as Chairman of the Board of The Energy Coalition,organization and provides leadership toinformation on our Board.

            John S. Herrington.    Mr. Herrington has a profound understanding of energy markets and policy gained during his service as the U.S. Secretary of Energy. He also brings to our Board the perspective of an entrepreneur, the legal insight of an attorney and the discipline of a U.S Marine officer.

            James C. Miller III.    Mr. Miller has significant financial expertise and extensive knowledge of regulatory affairs gained during his serviceperformance on the board of governors of the United States Postal Service, as Chairman of the U.S. Federal Trade Commission and as Director of the U.S. Office of Management and Budget. Mr. Miller brings to our Board financial acumen and experience dealing with large and financially complex organizations.

            James E. O'Connor.    Mr. O'Connor brings to our Board substantial executive leadership experience, including his service as Chairman and Chief Executive Officer of a public company, along with extensive knowledge of, and key business contacts in, the refuse industry.

    material ESG issues.


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            T. Boone Pickens.    Mr. Pickens brings to our Board his experience as an energy industry entrepreneur, legendary deal-maker and unparalleled advocate on U.S. energy policy.

            Stephen A. Scully.    Mr. Scully brings to our Board the insight of a successful entrepreneur and operator, as well as extensive knowledge of the trucking industry gained through building the Scully Companies, a truck leasing and specialized contract carriage provider, into the largest independent asset-based logistics provider in the western United States.

            Kenneth M. Socha.    Mr. Socha brings to our Board legal insight gained during his distinguished legal career and the perspective and financial acumen of a highly successful private equity investor gained during his tenure as a Senior Managing Director of Perseus, L.L.C.

            Vincent C. Taormina.    Mr. Taormina brings to our Board the perspective of a highly successful entrepreneur and industry leader in the refuse and recycling industry.

    Identifying and Evaluating Director Nominees

            Our nominating and corporate governance committee utilizes a variety of methods to identify and evaluate nominees for directors. Our nominating and corporate governance committee is responsible for identifying individuals qualified to become members of the Board and recommending those candidates to our Board for election or appointment. Candidates may come to the attention of the nominating and corporate governance committee through current members of our Board, professional search firms, stockholders or other persons. These candidates may be evaluated and considered by our nominating and corporate governance committee at any point during the year.

            As described above, our nominating and corporate governance committee will consider properly submitted stockholder recommendations of candidates for our Board. Following verification of the stockholder status of persons recommending candidates, recommendations will be aggregated and considered by our nominating and corporate governance committee. If any materials are provided by a stockholder in connection with the recommendation of a director candidate, such materials will be forwarded to our nominating and corporate governance committee. Stockholder recommendations that comply with our procedures will receive the same consideration by our nominating and corporate governance committee as other proposed nominees receive.

    Director Diversity

            The Company does not have a formal diversity policy. The nominating and corporate governance committee, however, seeks to assemble a board of directors that brings to our Company a variety of perspectives, skills, expertise, and sound business understanding and judgment, derived from business, professional, governmental, community involvement and natural gas and energy industry experience. The nominating and corporate governance committee monitors its assessment of diversity as part of its annual self-evaluation process.

    Section 16(a) Beneficial Ownership Reporting Compliance

            Section 16(a) of the Exchange Act requires our directors, executive officers and beneficial owners of more than 10% of our common stock (see "Security Ownership of Certain Beneficial Owners and Management" above for identification of the persons who are beneficial owners of more than 10% of our common stock) to file reports of ownership of our common stock and changes in such ownership with the SEC. Based solely on copies of these reports provided to us and written representations that no other reports were required, we believe that these persons met all of the applicable Section 16(a) filing requirements during our 2015 fiscal year.


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    INFORMATION ABOUT OUR EXECUTIVE OFFICERS

    The names of our current executive officers, their ages as of January 31, 2015,the date of this Proxy Statement, their current positions and offices with our Company and, for executive officers who are not also members of our Board, other information about their positionsbackgrounds are shown below. We have entered into employment agreements with each of our executive officers, which are described below under "Compensation“Compensation Discussion and Analysis—Amended and RestatedAnalysis —  Employment Agreements" and whichAgreements” below, that establish, among other things, each executive'sexecutive officer’s term of office. There are no arrangements or understandings between any of our executive officers and any other person pursuant to which such individual was or is selected as an officer of our Company. Biographical summaries of each of our executive officers who are not also members of our Board are also provided below.

    NameAgePosition(s) and Office(s)
    Name
    AgePositions Held

    Andrew J. Littlefair

    5563President, Chief Executive Officer and Director

    Robert M. Vreeland

    5463Chief Financial Officer

    Mitchell W. Pratt

    56Chief Operating Officer and Corporate Secretary

    Peter J. Grace

    66Senior Vice President, Sales and Finance

    Barclay F. Corbus

    4957Senior Vice President, Strategic Development and Head of Renewable Fuels

    Robert M. Vreeland has served as our Chief Financial Officer since October 2014. From 2012 to 2014, Mr. Vreeland served as our Vice President, of Finance and Accounting. Prior to joining the Company, Mr. Vreeland was a consultant at RV CPA Services, PLLC, a provider of certified public accounting services. From 1997 to 2009, Mr. Vreeland held various finance and accounting positions at Hypercom, an electronic payment and digital transactions service provider, including Interim Chief Financial Officer, Senior Vice President and Corporate Controller, Senior Vice President, Operations, and Vice President of Financial Planning and Analysis. Prior to joining Hypercom, Mr. Vreeland spent 12 years at Coopers & Lybrand, an accounting firm that later merged to become PricewaterhouseCoopers. Mr. Vreeland earned a B.S. from Northern Arizona University and is a certified public accountant.

    Mitchell W. Pratt was appointed Chief Operating Officer in December 2010 and has served as our Corporate Secretary since December 2002. Prior to being appointed as Chief Operating Officer, Mr. Pratt served as our Senior Vice President, Engineering, Operations and Public Affairs, from January 2006 to December 2010. From August 2001 to December 2005, Mr. Pratt served as our Vice President, Business Development & Public Affairs. From 1983 to July 2001, Mr. Pratt held various positions in sales and marketing, operations and public affairs at Southern California Gas Company. Mr. Pratt earned a B.S. from the California State University at Northridge and an M.B.A. from the University of California, Irvine.

    Peter J. Grace has served as our Senior Vice President, Sales and Finance, since June 2010. From October 2005 to June 2010, he served as our Vice President, Leasing. Prior to joining the Company, Mr. Grace worked for companies in the commercial finance and leasing industry, serving as President of Churchill Technology Finance from 2001 to 2005 and Vice President of Cal First Leasing from 1993 to 2001. Mr. Grace earned a B.S. from Arizona State University.

    Barclay F. Corbus has served as our Senior Vice President, Strategic Development and Head of Renewable Fuels since December 2021. Prior to that, Mr. Corbus served as our Senior Vice President, Strategic Development from September 2007.2007 to December 2021. From July 2003 to September 2007, Mr. Corbus served as Co-Chief Executive Officer and a director of WR Hambrecht + Co, an investment bank that managed our initial public offering. Mr. Corbus joined WR Hambrecht + Co in 1999 and, from October 2000 to July 2003, Mr. Corbus served as Head of Investment Banking of WR Hambrecht + Co. From 1989 to 1999, Mr. Corbus worked with Donaldson, Lufkin & Jenrette. Mr. Corbus serves as a director of Overstock.com,Beyond, Inc., a publicly traded company.company, and is a Trustee of the College of the Atlantic. He has previously served on the boards of Alaska Energy and Resources Co, Niman Ranch, and Goodwill of San Francisco. Mr. Corbus earned an A.B. from Dartmouth College and an M.B.A. from Columbia Business School.



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    COMPENSATION DISCUSSION AND ANALYSIS

    Executive Summary

    Overview
    This compensation discussion and analysis describes the material elementsfeatures of the compensation awarded to, earned by, or paid to each person who served as our principal executive officer (Andrew J. Littlefair)Littlefair, our President and Chief Executive Officer) or principal financial officer (Robert M. Vreeland) duringVreeland, our 2015 fiscal year,Chief Financial Officer) in 2023, and the three most highly compensated executive officersonly two other individuals who were serving as executive officers at the end of our 2015 fiscal2023 or at any time during the 2023 calendar year and who did not serve as our principal executive officer or principal financial officer (Mitchell W. Pratt, Peter J. Gracewho served in an executive officer role as Chief Operating Officer and Corporate Secretary until May 2023 and then transitioned to a non-executive officer role, and Barclay F. Corbus, our Senior Vice President, Strategic Development and together withHead of Renewable Fuels). Messrs. Littlefair, Vreeland, Pratt and Vreeland, the "namedCorbus are collectively referred to in this proxy statement as our “named executive officers").officers.” This analysis also discusses our compensation philosophy and objectives, the methodologies used for establishing the compensation programs for the named executive officers, and the policies and practices to administerfor administering such programs.

    Business Highlights and Challenges

    We are seekinga leading renewable energy company focused on the procurement and distribution of renewable natural gas (“RNG”) and conventional natural gas, in the form of compressed natural gas (“CNG”) and liquefied natural gas (“LNG”), for the United States (“U.S.”) and Canadian transportation markets. RNG, which is delivered as either CNG or LNG, is created by the recovery and processing of naturally occurring, environmentally detrimental waste methane (“biogas”) from non-fossil fuel sources — such as dairy and other livestock waste and landfills — for beneficial use as a replacement for fossil-based transportation fuels. Methane is one of the most potent climate-harming greenhouse gases (“GHG”) with a comparative impact on global warming that is about 25 times more powerful than that of carbon dioxide. We are focused on developing, owning, and operating dairy and other livestock waste RNG projects and supplying RNG to drive adoptionour customers in the heavy and medium-duty commercial transportation sectors. We have participated in the alternative vehicle fuels industry for over 20 years. We believe we are in a unique position because valuable Environmental Credits (as defined below) are generated by the party that dispenses RNG into vehicle fuel tanks, and we believe we have access to more dispensers than any other market participant.
    We believe we were the first organization to supply RNG for vehicle fuel use in the U.S., and sales of our RNG for such purpose have increased from 13.0 million gasoline gallon equivalents (“GGEs”) in 2013 to 225.7 million GGEs in 2023. We calculate one GGE to equal 125,000 British Thermal Units (“BTUs”) and, as such, one million BTUs (“MMBTU”) equals eight GGEs. We are North America’s leading provider of the cleanest fuel for the commercial transportation market, based on both the number of stations we operate and the amount of GGEs sold of RNG, CNG and LNG, which amounted to a total of 466.2 million GGEs in 2023. With the Company’s focus on RNG, our sales of RNG have grown from 12% of our vehicle fuel sales in 2013 to 89% of our vehicle fuel sales in 2023 (excluding GGEs from O&M (as defined below) services sales and non-vehicle sales). We believe that during 2023 we provided 53% and 47% of the RNG used for transportation fuel in California and the U.S., respectively.
    As a comprehensive clean energy solutions provider, we also design and build, as well as operate and maintain (“O&M”), public and private vehicle fueling stations in the U.S. and Canada; sell and service compressors and other equipment used in RNG production and at fueling stations; transport and sell RNG and conventional natural gas via “virtual” natural gas pipelines and interconnects; sell U.S. federal, state and local government credits (collectively, “Environmental Credits”) we generate by selling RNG as a vehicle fuel, by fleetsincluding Renewable Identification Numbers (“RIN Credits” or “RINs”) under the federal Renewable Fuel Standard Phase 2 and othercredits under the California, Oregon, and Washington Low Carbon Fuel Standards (collectively, “LCFS Credits”); and obtain federal, state and local tax credits, grants and incentives. We serve fleet vehicle operators primarily in thea variety of markets, including heavy-duty trucking, airport,airports, refuse, public transit, industrial and institutional energy userusers, and government fleet markets. In executing this mission, we have experienced meaningful progress and significant challenges. For example, we believe our efforts have substantially contributed to the adoption of natural gas by the refuse market, where approximately 55% of new vehicles ordered during 2015 were powered by compressed natural gas ("CNG"). But, due to factors that are largely outside our control and that are further discussed below, adoption of natural gas as a vehicle fuel has been slower than we expected.

            Despite volatile and overall markedly declining oil and diesel prices and the other significant challenges described below, in 2015 we achieved, among others, the following highlights:

      We delivered 308.5 million gasoline gallon equivalents ("GGEs") of CNG, liquefied natural gas ("LNG") and RNG, a 16.4% increase over 2014;

      We delivered 50.0 million GGEs of ourRedeem™ RNG vehicle fuel, compared to 20.0 million GGEs delivered in 2014.fleets. We believe we were the first company to commercially distribute fuel made from waste with the launch ofRedeem™, 100% of our CNG and LNG sold in California isRedeem™, and we have expanded sales ofRedeem™ to other states including Texas and Oregon. We believeRedeem™ is the cleanest transportation fuel available in the market today;

      The number of fueling stations we owned, operated, maintained and/or supplied grew to over 570;

      We obtained a reinstatement of the federal excise tax credits for alternative vehicle fuels other than ethanol (such credits, "VETC") for 2015 and 2016, and our VETC revenues were $31.0 million for 2015; and

      We materially reduced our selling, general and administrative expenses.

            Key challenges in 2015 included the following, among others:

      The fluctuations and substantial decline in the prices of oil and diesel fuel;

      The significant increase in oil supplies;

      Lower than expected sales of LNG and CNG by our Company;

      Sales and deployments of natural gas vehicles not meeting our expectations;

      The continuing higher cost of natural gas vehicles relative to comparable diesel and gasoline vehicles (principally due to the cost of the CNG and LNG storage systems);

      The limited availability of natural gas vehicles; and

      Increased competition from producers and sellers of gasoline and diesel fuels, which power the vast majority of vehicles in the U.S. and Canada, suppliers of other alternative vehicle fuels and providers of hybrid and electric vehicles.

            In addition, during 2015 the trading price of our common stock was significantly correlated to the price of oil. As a result, as oil prices substantially declined during the year, our stock price likewise fell significantly.

            We believe we are positioned to experience further growth in 2016, and we have adopted a strategic plan (the "Strategic Plan") that sets meaningful objectives that we believethese fleet markets will continue to drive natural gas adoption aspresent a growth opportunity for our vehicle fuel and expand our business in all of our key markets, while also conserving our capital and controlling our expenses.

    2015 and 2016fuels for the foreseeable future.


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    Key 2023 Pay Decisions

            As described in more detail below, we paid our named executive officers (other than Mr. Vreeland, who beame our Chief Financial Officer in October 2014) materially lower cash compensation in 2015 than in 2014. The compensation committee based this 2015

    Key pay determination primarily ondecisions for 2023 include the Company's performance and the Company's objectives of conserving cash resources and limiting selling, general and administrative expenses.

    following:


    Base salaries:   For 2015,2023, the compensation committee did not change the baseapproved no salary of any of our named executive officers from 2014 levels, except that Mr. Vreeland's salary was increased from $300,000 to $350,000 on May 1, 2015 pursuant to the terms of the offer letter he signed when he became our Chief Financial Officer. In addition, in February 2015, Mr. Littlefair voluntarily elected to reduce his base salary by 10%.

            Based on the compensation committee's assessment of the Company's performance with respect to the objectives set forth in our 2015 performance-based cash bonus plan, Mr. Littlefair received approximately 59% of his target (or "middle") bonus for 2015 and our other named executive officers received approximately 58% of their target (or "middle") bonuses for 2015. The compensation committee exercised its discretion under our performance-based cash bonus plan to reduce the payouts under this plan by 50%increase for Mr. Littlefair (whose salary had not been adjusted since he elected to take a voluntary pay reduction in February 2015); a 3.5% salary increase for Mr. Vreeland; a 1% salary increase for Mr. Pratt; and by 48%a 4.4% salary increase for Mr. Corbus. On May 17, 2023, Mr. Pratt executed an amended and restated employment agreement which included an incremental 5.5% increase over his 2022 base salary level in connection with his transition to Chief Technology Development Officer.


    Performance-based cash bonuses:   Based on our other named executive officers. Theperformance results achieved for 2023, the compensation committee has not awarded any additional discretionary bonusescash incentives under our 2023 performance-based cash incentive plan to our named executive officers for performance during 2015. These payments are described in more detail under "Cash Bonuses" below.

    below each executive’s target incentive.


    Equity awards:   In February and November 2015,2023 the compensation committee granted equity awards in the form of stock options to the named executive officers in the first quarter of the calendar year. No equity awards were granted to executive officers in 2022, with the exception of 150 restricted stock units ("RSUs") and stock optionsawarded to our named executive officers. These equity awards, which were granted primarily for retention and value delivery purposes, are described in more detail under "Equity Incentives" below.

            In January 2016, the compensation committee reviewed the base salaries of each of our named executive officers and decided that (i) in light of our performance and the business conditions we face, the base salaries of Messrs. Littlefair Vreeland,and Pratt, and Corbus would not be increased at that time and (ii) the base salaryalong with various other Company employees, on December 19, 2022 in recognition for over 20 years of Mr. Grace would be increased to $450,000 for 2016 because he no longer receives certain cash bonuses that he previously received based on the performance and results of our vehicle and station acquisition finance services. Additionally, in January 2016, the compensation committee granted additional RSUs and stock options to our named executive officers, which were granted primarily for retention and value delivery purposes and are described in more detail under "Equity Incentives" below.


    Compensation Consultant

            Since 2014, the compensation committee has retained Semler Brossy Consulting Group, LLC ("Semler Brossy"). The compensation committee instructed Semler Brossy to review the Company's compensation programs and provide the compensation committee with an understanding of recent trends and issues in executive compensation. Semler Brossy was engaged by and reports solely to the compensation committee, and the compensation committee has the sole authority to approve the terms of the engagement. Semler Brossy did not provide any servicesservice to the Company, and in 2015 other than executive compensation consulting services provided to the compensation committee. Before engaging Semler Brossy, the compensation committee determined that Semler Brossy is independent under Rule 10C-1 of the Exchange Act and NASDAQ Marketplace Rule 5605(d).

    2023 we resumed our normal annual equity grant practices.

    Compensation Program Objectives and Philosophy

    Our compensation committee oversees the design and administration of our executive compensation program. The primary objectives of our executive officer compensation program are to (i) attract, retain and motivate talented and dedicated executive officers, (ii)officers; to reward individual performance and achievement of key corporate objectives, including the objectives set forth in our Strategic Plan,annual strategic plan, without promoting excessive or unnecessary risk-taking, (iii)risk-taking; to align the interests of our executivesexecutive officers with those of our stockholders,stockholders; and (iv)to provide compensation that we believe is fair in light of an executive'sexecutive officer’s experience, responsibilities, performance and tenure with our Company and in relation to the compensation provided to other executives of our other executives.

    Company and comparable executives at certain peer companies.

    To achieve these objectives, we maintain an executive compensation program that includes the following elements:components: base salary, cash bonuses,incentives, equity incentives, and change in control and post-termination severance compensation and other benefits. The compensation program also places a strong emphasis on pay-for-performance, as a significant portion of executive compensation must be earned through the annual cash bonus opportunity, and our equity incentives have high upside upon achieving share price appreciation. The compensation committee developed our executive compensation program by drawing on its experience and judgment in establishing programs it believes are appropriately rewarding and responsible for a growth company in a young and developing industry. The compensation committee reviews and evaluates our executive compensation program, including its objectives and the forms of compensation used to achieve these objectives, on at least an annual basis, and adjusts the program as it deems appropriate and considers factors relevant in establishing appropriate levels and mix of compensation for our executive officers.
    Process for Determining Executive Compensation
    The Compensation Committee’s Role
    The compensation committee’s general practice is to establish the annual compensation mix and levels for each of our executive officers at the beginning of each fiscal year, typically in our first quarter in connection with annual performance reviews. Performing this process after the end of the prior year allows the compensation committee to incorporate into its analysis information on the Company’s and each individual’s performance during the prior year and to assess each executive officer’s overall contributions to the Company.
    The compensation committee then compiles this information to establish annual base compensation and performance-related targets and to adjust long-term incentives as appropriate. In 20152023, the compensation

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    committee returned to granting equity awards in the form of stock options to the named executive officers in the first quarter of the calendar year.
    Management’s Role
    In determining the mix and level of compensation components for our named executive officers, Mr. Littlefair, our President and Chief Executive Officer, typically makes recommendations to our compensation committee regarding appropriate pay. After reviewing Mr. Littlefair’s recommendations, our compensation committee makes the final determination regarding compensation mix and levels for each of our named executive officers. Although Mr. Littlefair submits recommendations to the compensation committee regarding his own proposed compensation, which the committee takes under advisement, Mr. Littlefair does not participate in the compensation committee’s deliberations regarding his own compensation. Additionally, the financial performance criteria of our annual incentive plan are prepared by our Chief Financial Officer based on our annual budget, and the strategic initiatives are developed by our Chief Executive Officer, with the plan design and targets ultimately being approved by the compensation committee.
    Mr. Littlefair’s recommendations and the compensation committee’s decisions regarding the mix and level of compensation components for each of our named executive officers are based on a number of factors, including, among others, the individual’s performance and contribution to our strategic plan and other business objectives; the Company’s overall performance in light of business and industry conditions; general industry trends and market reference points; the level of the individual’s responsibility; the seniority of the individual; the individual’s long-term commitment to our Company; the available pool of individuals with similar skills; retention risk for the individual; principles of pay equity and relative pay (we generally believe that executives with comparable experience, levels of responsibility and performance deserve comparable compensation, and that more experienced executives with a greater degree of responsibility and higher performance levels deserve higher levels of compensation on a relative basis); the role of each compensation component in achieving the objectives of our executive compensation program; and the compensation committee’s business judgment and experience.
    Compensation Consultant
    Our compensation committee has the authority to engage the services of compensation consultants or other experts or advisors as it deems appropriate in fulfilling its responsibilities and has retained the services of Semler Brossy. The compensation committee has the sole authority to approve the terms of this engagement, and Semler Brossy reports to the compensation committee only under this engagement and does not provide any additional services to us other than its work for the compensation committee. Before engaging Semler Brossy, the compensation committee determined that Semler Brossy was independent and that its work would not raise any conflicts of interest after taking into consideration the factors set forth in applicable Nasdaq and SEC rules. In 2023, Semler Brossy assisted as part of the engagement and supported the compensation committee in determining our Board of Director pay levels and compensation plan, reviewing our peer group for 2024 compensation actions, analyzing our equity pool usage, providing executive pay benchmarking to help inform 2024 compensation decisions for the executive team, and supported on various other ad hoc and governance-related items.
    Peer Group
    Selecting a group of our peer companies is challenging for many reasons, including principally our belief that there are few publicly traded companies in our line of business. In selecting our peer companies for compensation purposes, our compensation committee generally sought to identify companies that are similar to us across a number of metrics and that, in the compensation committee’s view, compete with us for talent.
    In 2022, based on Semler Brossy’s recommendations, the compensation committee approved the following 21 companies as our peer companies that were used for 2023 for compensation purposes, which we refer to collectively as the “2023 Peer Group.” When the compensation committee performed an analysis to determine which companies to include in the 2023 Peer Group, the compensation committee concluded that the previous peer group continued to include the most relevant companies for compensation comparison

    37


    purposes; however, Covanta Holding Corporation and Renewable Energy Group, Inc. were each removed from the peer group because they had been acquired and no longer remain independent publicly traded companies.
    Aemetis, Inc.AeroVironment, Inc.Ameresco, Inc.
    Ballard Power Systems, Inc.Battalion Oil CorporationBloom Energy Corporation
    Broadwind, Inc.Callon Petroleum CompanyDarling Ingredients, Inc.
    Enphase Energy, Inc.FuelCell Energy, Inc.Gevo, Inc.
    Green Plains, Inc.Montauk Renewables, Inc.Northern Oil and Gas, Inc.
    Ormat Technologies, Inc.Plug Power, Inc.Power Solutions International, Inc.
    Rice Acquisition Corp.Westport Fuel Systems, Inc.W&T Offshore, Inc.
    The compensation committee believes benchmarking may not always be the most appropriate tool for setting compensation due to aspects of our business, objectives, and the way we’ve structured executive roles that may be unique to us. The compensation committee considers internal equity, individual performance, tenure, recent pay levels, and input from our CEO and from our compensation consultant, among other factors, in determining final pay levels. The executive pay levels included in this proxy statement were determined based on all of the above factors, in conjunction with considering the peer group as stated above. As a result, the compensation committee retains discretion to vary executive compensation components and levels.
    For compensation decisions in 2023, the compensation committee did not use tally sheets, internal pay equity studies, accumulated wealth analyses, benchmarkingtie named executive officer compensation (either specific elements of compensation or similar tools that may be common in many mature companies' executivetotal compensation processes, although from time-to-time the compensation committee reviews general industry benchmarks and trends for informational purposes only.

    levels) to any predetermined benchmark.

    Review of Stockholder Say-on-Pay Votes

    Consistent with the preference of our stockholders, which was most recently expressed at the Company'sour annual meeting of stockholders held in May 2011,2023, our stockholders have the opportunity tocan cast an advisory vote on executive compensation, or a "say-on-pay"“say-on-pay” vote, once every two years, and the next such vote is expected to occur at our annual meeting of stockholders to be held in 2017.year. At the Company'sCompany’s annual meeting of stockholders held in 2015,May 2023, our executive compensation received a favorable advisory vote from 93.3%approximately 89.7% of the shares represented and entitled to votevotes cast on the proposal at the meeting.meeting (which excludes abstentions and broker non-votes).
    We believe the high degree of support on our 2023 say-on-pay proposal demonstrates that stockholders support our executive compensation program design.
    We actively engage with our stockholders to discuss various compensation and governance matters and consider their feedback in determining named executive officer compensation. The compensation committee believed this vote affirmed stockholders' support of our approach to executive compensation, and therefore the compensation committee did not change our compensation policies or practices in 2015 or 2016. The compensation committee will also continue to consider the outcome of the Company'sCompany’s say-on-pay votes, as well as this direct stockholder input, when making future compensation decisions for our named executive officers and in respect of our compensation program generally.

    Assessment

    Components of Named Executive Officer Performance

            The compensation committee believes our named executive officers are highly qualified, talented and dedicated to the Company. The following is a summary of the compensation committee's assessment of the performance of each named executive officer in 2014 and 2015.

    Compensation

    Andrew J. Littlefair—President and Chief Executive Officer

            Mr. Littlefair's leadership of the Company resulted in continued growth in 2015 and 2014 despite significantly declining oil and diesel prices and the other substantial challenges described above. He led our efforts to conserve cash resources and limit selling, general and administrative expenses. Mr. Littlefair oversaw our RNG business and spearheaded our sales ofRedeem™ vehicle fuel. He effectively led our efforts to obtain capital to fund the growth of our business by, among other things, overseeing the sale of our interest in an extraction and processing plant located in Dallas, Texas in 2014 and leading our efforts to establish an at-the-market equity offering program in 2015. Under his leadership we secured the reinstatement of VETC for 2014, 2015 and 2016, which resulted in $31.0 million of VETC revenue in 2015. Mr. Littlefair is directing the development of strategies to repay our outstanding convertible notes that mature in August 2016. He worked diligently to promote the transition of shippers, manufacturers and other fleet operators to use natural gas vehicle fuel and to obtain commitments from these organizations to fuel at our stations. In addition, Mr. Littlefair served as our principal spokesperson and effectively conveyed the Company's message to customers, the finance and investor community and the media.

    Robert M. Vreeland—Chief Financial Officer

            Since his appointment in the fourth quarter of 2014, Mr. Vreeland has directed our financial operations, including financial and capital plans and policies, accounting practices and procedures, and financial and tax reporting functions. He has also acted as the primary management contact for our audit committee and our independent registered public accounting firm.

    Mitchell W. Pratt—Chief Operating Officer and Secretary

            Mr. Pratt directed and managed the Company's operations, engineering, construction, IT and public affairs teams. He was responsible for key corporate subsidiaries, including Clean Energy Compression and Clean Energy Cryogenics, actively guiding their growth and alignment with overall corporate objectives. In particular, Mr. Pratt oversaw the development of Clean Energy Compression's new standard compressor product and an overhaul of this organization's engineering and manufacturing functions. He made vital contributions to the planning, engineering, construction, operation and maintenance of our natural gas fueling stations.

    Peter J. Grace—Senior Vice President, Sales and Finance

            Mr. Grace led our sales team to significant growth in the amount of GGEs delivered and the number of fueling stations we own, operate, maintain and/or supply. He also developed innovatitve station finance offerings for our customers. Mr. Grace made key contributions to our relationships with some of our large customers, including Waste Management, Republic Services, Los Angeles County Metropolitan Transportation Authority, Dallas Area Rapid Transit and Jacksonville Transit, among others.

    Barclay F. Corbus—Senior Vice President, Strategic Development

            Mr. Corbus oversaw the development of key growth opportunities, acquisitions and financing strategies for the Company. In particular, Mr. Corbus played an important role in establishing our at-the-market equity offering program in 2015, preparing our Strategic Plan, developing strategies to repay our outstanding convertible notes that mature in August 2016 and interacting with the finance and investor community.


    Elements of Compensation

    Our named executive officers'officers’ compensation consists of the following components: base salary,


    Base salary:

    Performance-based annual cash bonuses, equity incentives, and changeincentives;

    Equity incentives;

    Change in control and post-termination severance benefits. In addition, we provide our named executive officers with a variety ofcompensation; and

    Other benefits that are generally available to all of our salaried employees.

            We view

    The compensation committee views the various components of compensation as distinct methods of achieving the various objectives of our compensation program and, we doas a result, it generally does not believe that significant compensation derived from one component of compensation should negate or reduce compensation from other

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    TABLE OF CONTENTS

    components. We determine the appropriate level for each compensation component based on the performance of the employee (including any extraordinary performance), the Company's performance, the level of responsibility and commitment associated with the position, our desire to retain, motivate and attract quality executives, our desire to appropriately incentivize our executives to successfully execute our Strategic Plan and achieve our other business, financial and operational goals while avoiding promotion of excessive risk-taking, and the compensation committee's business judgment and experience. In addition, our compensation decisions generally reflect our belief that employees with comparable experience, levels of responsibility and performance deserve comparable compensation, and that more experienced employees with a greater degree of responsibility and higher performance levels deserve greater compensation on a relative basis. The compensation committee does, however, review and evaluate each executive’s total compensation, and it may make decisions regarding levels of certain compensation components based on this evaluation of overall compensation, including, for instance, determinations regarding target levels under our performance-based cash incentive plan. The compensation committee also strives to provide an appropriate mix of long-term and short-term, cash and long-termnon-cash, and different forms of non-cash compensation; however, the compensation committee has not adopted any formal plans or informal policies or guidelines for allocatingprograms that allocate total compensation between long-term and short-term compensation, between cash and non-cash compensation, or among different forms of non-cash compensation.

            Our annual process for determining overall compensation for named executive officers other than Mr. Littlefair has historically started with recommendations made by Mr. Littlefair to our compensation committee. In making his recommendations, Mr. Littlefair considers a number of factors, including the role each individual plays in executing our Strategic Plan and other goals, the seniority of the individual, the functional role of the position, the level of the individual's responsibility, the individual's performance and contribution to our overall business objectives, the individual's long-term commitment to our Company, the Company's performance, general industry benchmarks and trends, and the available pool of individuals with similar skills. After reviewing Mr. Littlefair's recommendations, our compensation committee makes the final determination of compensation for each of our named executive officers. Mr. Littlefair also submits recommendations to the compensation committee regarding his own proposed compensation levels, which are taken under advisement by the committee; however, Mr. Littlefair does not participate in the compensation committee's deliberations regarding his own compensation.

    these various characteristics.

    Base Salary

    We provide base salaries to:

      to recognize the experience, skills, knowledge, and responsibilities of our named executive officers;

      reward individual performance and contribution to our overall business goals; and

      retain our executives.

    The compensation committee usesreviews base salaries annually and relies on its judgment and discretion in determining the amount of each named executive officer'sofficer’s base salary and reviews base salaries annually.salary. Proposed base salaries are prepared by Mr. Littlefair and recommended to the compensation committee for its consideration.

    consideration and approval.

            In setting 2015 base salaries for our named executive officers in 2022 and 2023 are as follows:

    Named Executive Officer2022 Base Salary
    ($)
    2023 Base Salary
    ($)
    Andrew J. Littlefair700,812700,812
    Robert M. Vreeland450,000465,750
    Mitchell W. Pratt(1)519,769550,000
    Barclay F. Corbus478,888500,000
    (1)
    The base salary increase for Mr. Pratt includes an increase made in connection with his transition to the role of Chief Technology Development Officer in May 2023.
    Cash Incentives
    2023 Performance-Based Cash Incentive Plan
    Our compensation committee considered Mr. Littlefair's recommendations, the Company's overall performance and the compensation committee's assessment of each executive's performance, experience, responsibilities, work demands and tenure, as well as the retention risk associated with each executive. The compensation committee also focused on the Company's key objectives of counservingbelieves cash resources and limiting selling, general and administrative expenses.

            Based on the foregoing factors, the compensation committee did not change 2015 base salaries for our named executive officers from 2014 levels, except that Mr. Vreeland's salary was increased from $300,000 to $350,000 on May 1, 2015 pursuant to the terms of the offer letter he signed when he became our Chief Financial Officer in October 2014. 2014 and 2015 base salaries for our named executive officers were as follows:

    Named Executive Officer
     2014 Base
    Salary($)
     2015 Base
    Salary($)
     

    Andrew J. Littlefair

      778,680  712,792(1)

    Robert M. Vreeland

      300,000  350,000(2)

    Mitchell W. Pratt

      481,268  481,268 

    Peter J. Grace

      360,500  360,500 

    Barclay F. Corbus

      443,415  443,415 

    (1)
    In February 2015, Mr. Littlefair voluntarily elected to reduce his base salary by 10%, from $778,680 to $700,812. As a result Mr. Littlefair received an aggregate of $712,792 in base salary for 2015.

    (2)
    Effective May 1, 2015.

    Cash Bonuses

            We believe a performance-based cash incentive compensation program isincentives are important to focus our management on, and reward our executives for, achieving key Company objectives. financial and strategic objectives on an annual basis, as well as to deliver adequate retention value when combined with our other incentive programs, which may be denominated in equity and/or designed to incentivize performance over a longer term than annually. The compensation committee has the discretion to determine performance criteria, consider factors and developments it deems relevant and award overall cash incentives in the amounts it deems appropriate.

    Each year our compensation committee approves a performance-based cash bonusincentive plan and pays bonusesincentives after reviewing our performance with respect to the criteria set forth in the plan, subject toplan. Further, our compensation committee may, in its discretion, award additional special discretionary cash incentives for extraordinary efforts or performance by our named executive officers that the compensation committee's discretion to pay amounts thatcommittee believes are higher or lower than the payouts prescribednot otherwise covered by the performance criteria set forthin our performance-based cash incentive plan. No discretionary cash incentive awards were made for 2023 performance.
    As further detailed in the table below, based on our performance for 2023, the compensation committee awarded Mr. Littlefair a cash incentive under our performance-based plan equal to approximately 62% of his target (or “middle”) incentive and subject to eachawarded the other named executive officer's continued serviceofficers a cash incentive under our performance-based plan equal to approximately 60% of their target (or “middle”) incentives for 2023, as an executive officerindicated below.

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    TABLE OF CONTENTS

    NameTarget IncentivePercent of Target
    Incentive Paid
    Total Payout
    Andrew J. Littlefair$778,680(1)62%$482,811
    Robert M. Vreeland$326,02560%$195,589
    Mitchell W. Pratt$385,00060%$230,970
    Barclay F. Corbus$300,00060%$209,973
    (1)
    Mr. Littlefair’s base salary used for purposes of our Company ascash performance bonus calculations was $778,680, which was his salary before taking a 10% voluntary pay reduction in 2015.
    In April 2023, the compensation committee approved a 2023 performance-based cash incentive plan that included base, middle and maximum performance targets for each of the bonus payment date.quantitative performance metrics described below, noting that for 2023 the financial results for NG Advantage were evaluated separately and excluded from the 2023 performance-based cash incentive plan. The 2023 plan had the same design as our 2022 performance-based cash incentive plan, including the discretion afforded to our compensation committee in determining performance criteria, for cash bonus awards for our 2015 fiscal year were designed to incentivize management to make decisions that align our corporate goals with our stockholders' interests without promoting excessive risk-taking.

    performance targets, and actual payouts.

    For 2015,2023, the total potential cash bonusincentive award under our performance-based cash bonusincentive plan for each of our named executive officers was based on the following: 33% was based onfollowing, exclusive of the volume of GGEs of natural gas delivered by us; 33%financial results for NG Advantage:

    30% was based on our adjusted EBITDA, which is a non-GAAP financial measure described below; and 33%

    20% was based on the achievement (as determined in the compensation committee'scommittee’s sole discretion) of certain specified strategic initiatives;

    15% was based on the volume of GGEs of natural gas fuel we delivered;

    15% was based on the volume of RNG we delivered;

    10% was based on our strategic initiatives. The compensation committee hasvolume margin, as defined below;

    5% was based on the discretion to determinevolume-related, O&M services margin, as defined below; and adjust

    5% was based on the volume-related, O&M services margin percentage, as defined below.
    We believe this combination of objective financial performance criteria consider factorsthat include both revenue and developments it deems relevant and award overall bonuses in the amounts it deems appropriate.

            Pursuant to the performance-based cash bonus plan, if we exceedprofitability measures, combined with tying a performance target, then each named executive officer receives a pro-rata portion of the incremental annual cash bonus amount, upincentive to the next target limit. The financial performance criteria are prepared by our Chief Financial Officer


    based on our annual budget and the strategic initiatives are developed by our Chief Executive Officer. The financial performance criteria and strategic initiatives are then presented to our compensation committee for review, comment, adjustment and ultimate approval.

            Under our 2015 performance-based cash bonus plan:

      Mr. Littlefair was eligible to receive 70%, 100% or 150% of his base salary for our achievement of strategic objectives, appropriately incentivized the base, middle and maximum performance targets, respectively, and we consider achievement of the middle performance targetsnamed executive officers to be Mr. Littlefair's target bonus amount; and

      Each of Messrs. Vreeland, Pratt, Grace and Corbus was eligible to receive 50%, 70% or 100% of his respective base salaryachieve our business objectives for our achievement of the base, middle and maximum performance targets, respectively , and we consider achievement of the middle performance targets to be Messrs. Vreeland's Pratt's, Grace's and Corbus's target bonus amount.

            For 2015, we2023.

    Performance Criteria for 2023:

    Adjusted EBITDA:   We defined adjusted EBITDA as net income (loss) attributable to the Company,Clean Energy, plus or minus(minus) income tax expense or benefit,(benefit), plus orinterest expense (including any losses from the extinguishment of debt), minus interest expense or income, net, plus depreciation and amortization expense, plus non-cash incentive contra-revenue charges (Amazon warrant charges), plus stock-based compensation charges,expense, plus or minus any mark-to-market losses or gains on our derivative warrants(minus) loss (income) from the SAFE&CEC S.r.l. equity method investments, and plus (minus) any loss (gain) from changes in the lease exit charges related tofair value of derivative instruments. Adjusted EBITDA is a non-GAAP financial measure. See “Calculation of 2023 Adjusted EBITDA” below in this Proxy Statement for the movecalculation of our corporate headquarters (the "HQ Lease Exit"). The following table shows2023 adjusted EBITDA, as we defined it for 2015 and also reconciles this non-GAAP financial measurewell as a reconciliation of adjusted EBITDA to the GAAP measure net income (loss) attributable, which is the most comparable GAAP financial measure.

    Strategic Initiatives:   Our strategic initiatives included winning a substantial portion of major fleet fueling business for natural gas vehicles, assisting and capitalizing on the introduction of the Cummins 15-liter engine, securing long-term RNG sources and driving RNG growth pipeline, lowering RNG project costs, working with state governments to maintain successful RNG policy, working to maximize RNG production tax credits, working with states to develop additional low carbon fuel standard (“LCFS”) programs, and solidifying our hydrogen strategy and position ourselves for opportunities.

    Fuel Volume (in GGEs):   We defined the Company:

    volume of GGEs of natural gas fuel we delivered as (1) the volume of GGEs we sell to our customers as fuel, plus (2) the volume of GGEs dispensed at

    (in 000s)
     Year Ended
    Dec. 31, 2015
     

    Net Income (Loss) Attributable to the Company

     $(134,242)

    Income Tax (Benefit) Expense

      1,614 

    Interest Expense (Income), Net

      94,970 

    Depreciation and Amortization

      55,219 

    Stock Based Compensation, Net of Tax Benefits

      10,779 

    Mark-to-Market (Gain) Loss on Series I Warrants

      (1,414)

    HQ Lease Exit

      835 

    Reported Adjusted EBITDA

     $27,761 

    40


    facilities we do not own but where we provide operation and maintenance services on a per-gallon or fixed fee basis, plus (3) our proportionate share of the GGEs sold as CNG by our joint venture, Mansfield Clean Energy Partners, LLC.

    RNG Volume (in GGEs):   We defined RNG volume as the amount of renewable natural gas fuel, in GGEs, delivered to our customers.

    Fuel Volume Margin per GGE:   We defined fuel volume margin as gross profit margin from the volumes of natural gas and RNG fuel we delivered, divided by the volumes of RNG, CNG and LNG we delivered (where “gross profit margin” is our fuel volume-related revenue, exclusive of non-cash changes in the fair value of fuel hedge derivatives and Amazon warrant charges, less our fuel volume-related cost of sales, exclusive of depreciation).

    Volume-related, O&M services Margin:   We defined volume-related, O&M services margin as gross profit margin from performing maintenance services on customer-owned fueling stations.

    Volume-related, O&M services Margin %:   We define volume-related, O&M services margin percentage as gross volume-related O&M services revenue, less any costs to perform those services, divided by the gross volume-related O&M services revenue.
    The specificbase, middle and maximum targets for the performance criteria relating tounder the cash bonusincentive plan approved by our compensation committee for 2015 and2023, as well as our actual performance for these criteria, are set forth in the following table:

    table.
    Performance CriteriaWeightingBase
    Target
    Middle
    Target
    Maximum
    Target
    Actual
    Performance(3)
    Adjusted EBITDA30%$47,000$52,200$60,000$39,448
    Strategic Initiatives20%
    Volume (in GGEs)(1)15%268,000281,800296,000254,664
    RNG Volume (in GGEs)(1)15%222,000234,000246,000225,689
    Fuel Volume Margin per Gallon (in GGEs)(1)(2)10%$0.397$0.420$0.445$0.444
    Volume-related, O&M services Margin5%$17,800$18,800$19,900$18,941
    Volume-related, O&M services Margin %5%38.1%40.3%42.6%36%

    Performance Criteria
     Weighting Base Target Middle Target Maximum
    Target
     Actual
    Performance
     
     
      
     (thousands)
     (thousands)
     (thousands)
     (thousands)
     

    Volume (in GGEs)

      33% 310,000  325,000  345,000  308,500 

    Adjusted EBITDA

      33%$10,000 $20,000 $27,000 $27,761 

    Achievement of Strategic Initiatives

      33%        
    (1)

            For 2015, our strategic initiatives included opening 30 new LNG

    Target and CNG fueling stations; deliveringactual performance amounts shown in millions.
    (2)
    Excludes changes in fair value of derivative instruments and Amazon warrant charges; includes margin from fuel sales, RIN credits, LCFS credits, and AFTC.
    (3)
    Actual Performance excluding the actual performance of NG Advantage.
    If each of the seven performance criteria are achieved at least 45 million GGEsthe base performance level, Mr. Littlefair would be entitled to an incentive payment equal to 70% ofRedeem™; reducing our selling, general his target bonus (Mr. Littlefair’s base salary for purposes of bonus calculations was $778,680, which was his base salary before taking a 10% voluntary pay reduction in 2015), while the other named executive officers would be entitled to an incentive payment equal to 50% of their base salaries. If each of the seven performance criteria are achieved at the middle (target) performance level, Mr. Littlefair would be entitled to an incentive payment equal to 100% of his target bonus, while the other named executive officers would be entitled to an incentive payment equal to 70% of their base salaries. The maximum incentive payment for Mr. Littlefair is equal to 150% of his target bonus, while other executives can receive up to approximately 143% of their target bonuses resulting in a payout equal to 100% of their base salaries. Payouts for performance between the base and administrative expenses;middle performance levels and obtaining an extension of VETC.

    between the middle and maximum performance levels are linearly interpolated.

    Payouts.   The compensation committee met in February 20162024 to review our 20152023 actual performance versus the performance criteria and strategic initiativesinitiative targets described above and to determine what payouts, if any, would be made under the 20152023 performance-based cash bonusincentive plan.

    Adjusted EBITDA:    Our company achieved below the base target for adjusted EBITDA. This adjusted EBITDA performance resulted in no payout for this performance measure.

    41



    Strategic Initiatives:   The compensation committee determined that all majorthe named executive officers made significant progress on each of the strategic initiatives were achieved, and decided that therefore it was appropriate to provide a payout equal to 100% of the midpointmaximum target amount for the strategic initiatives’ performance measure was appropriate.

    Fuel Volume (in GGEs):   Our company achieved below the base target for the volume performance measure. This volume performance resulted in no payout for this performance measure.

    RNG Volume (in GGEs):   Our company achieved approximately 102% of the base target for RNG volume, which resulted in a payout prorated between the base and middle targets for this performance measure.

    Fuel Volume Margin per GGE:   Our company achieved approximately 105% of the middle target for fuel volume margin, which resulted in a payout prorated between the middle and maximum target amountstargets for this performance criteria. Additionally, in 2015, we delivered 308.5 million GGEs, which was 99.5%measure.

    Volume-related, O&M services Margin:   Our company achieved approximately 101% of the base volumemiddle target and the compensation committee determined that it was therefore appropriate to


    providevolume-related, O&M services margin, which resulted in a payout equal to 75% ofprorated between the middle and maximum targets for this performance measure.


    Volume-related, O&M services Margin %:   Our company achieved below the base target amount for thisvolume margin. This volume margin performance criteria. In assessing our performance relative to the adjusted EBITDA target, the compensation committee determined that our named executive officers should not receive the benefit of the $31.0 million of revenue we recognizedresulted in 2015 relating to VETC (such revenue, the "2015 VETC Payment") because obtaining an extension of VETC was already being rewarded as part of the strategic initiatives performance criteria under the plan. As a result, for purposes of our performance-based cash bonus plan, the compensation committee determined our adjusted EBITDA to be the following and determined it was appropriate to provide no payout for this performance criteria:

    measure.
    (in 000s)
     Year Ended
    Dec. 31, 2015
     

    Reported Adjusted EBITDA

     $27,761 

    2015 VETC Payment

      (31,000)

    Adjusted EBITDA, for purposes of our performance-based cash bonus plan

     $(3,239)

            As further detailed in the table below, the compensation committee awarded (i) Mr. Littlefair a bonus equal to approximately 59% of his target (or "middle") bonus for 2015 (such amount would have been approximately 109% if the committee had not modified our adjusted EBITDA for purposes of these bonuses) and (iii) each of Messrs. Vreeland, Pratt, Grace and Corbus a bonus equal to approximately 58% of their respective target bonuses for 2015 (such amount would have been approximately 106% if the committee had not modified our adjusted EBITDA for purposes of these bonuses).

    Name
     Percent of
    Target
    Bonus
    Paid for
    GGE
    Volume
    Target
     Percent of
    Target
    Bonus
    Paid for
    Adjusted
    EBITDA
    Target
     Percent of
    Target
    Bonus
    Paid for
    Strategic
    Initiatives
     Aggregate
    Percent of
    Target
    Bonus
    Paid
     Total
    Payout
     Potential Total
    Payout if All
    "Middle"
    Targets had
    been Achieved
     Potential Total
    Payout if
    Adjusted
    EBITDA had
    not been
    Modified
     

    Andrew J. Littlefair

      17% 0% 42% 59%$460,719 $778,680 $850,059 

    Robert M. Vreeland

      18% 0% 40% 58%$142,917 $245,000 $259,583 

    Mitchell W. Pratt

      18% 0% 40% 58%$196,518 $336,888 $356,940 

    Peter J. Grace

      18% 0% 40% 58%$147,204 $252,350 $267,371 

    Barclay F. Corbus

      18% 0% 40% 58%$181,061 $310,391 $328,866 

      2016 Performance-Based Cash Bonus Plan

            In February 2016, our compensation committee approved our 2016 performance-based cash bonus plan. The plan has substantially the same design as our 2015 performance-based cash bonus plan, including the discretion afforded to our compensation committee in determining performance targets and actual payouts. Among other things, the 2016 plan provides that the total potential cash bonus award for each of our named executive officers under the plan will be based on the following: 33% will be based on the volume of GGEs of natural gas delivered by us, 33% will be based on our adjusted EBITDA and 33% will be based on achievement (as determined in the compensation committee's sole discretion) of our strategic initiatives.

      2015 Discretionary Special Cash Bonuses

            Our compensation committee may, in its discretion, award additional special cash bonuses to reward extraordinary efforts by our named executive officers not otherwise covered by the strategic initiatives metric in our annual performance-based cash bonus plan. The compensation committee did not award any special cash bonuses to any of our named executive officers for performance in 2015.


      Grace Finance Services Bonus

            Pursuant to his former employment agreement with us, Mr. Grace was eligible to receive additional bonuses in recognition of the results of our vehicle and station acquisition finance services ("Finance Services"), as determined from time to time in the Company's discretion (the "Finance Services Bonus"). Based on our Finance Services performance, for 2015, the Company paid Mr. Grace a Finance Services Bonus of $123,640, which amount is less than half of the Finance Services Bonus paid to Mr. Grace for 2014. Additionally, in an effort to standardize the bonus eligibility and overall pay of our named executive officers, the terms of Mr. Grace's new employment agreement with us, discussed below under "—Amended and Restated Employment Agreements," do not provide eligibility to receive a Finance Services Bonus.

    Equity Incentives

    We believe that motivation of long-term performance motivation is achieved through an ownership culture that encourages performance by our named executive officers through the use of stock and stock-based awards. Our equity incentive plans have been established to provide certain of our employees, including our named executive officers, with incentives designed to align these employees'employees’ interests with the interests of our stockholders. Our compensation committee believesIn general, the use of stock and stock-based awards offers the best approach for achieving this goal. The compensation committee develops its equity award determinations based on its judgments as to whether thethese equity awards provided to our named executive officers are sufficient to further our ownership culture, appropriately align the interests of our named executive officers with those of our stockholders and retain, motivate, and adequately reward our executives on a long-term basis.

            We currently sponsor the 2002 Plan, the 2006 Plan and the ESPP. We are also asking our stockholders to approve a new equity incentive plan, the 2016 Plan, which will replace the 2006 Plan if and at such time that our stockholders approve the 2016 Plan. Upon the closing of our initial public offering, the 2006 Plan became effective and the 2002 Plan became unavailable for new awards. The 2002 Plan and the 2006 Plan are administered by our Board or our compensation committee. In the case of awards intended to qualify as "performance based compensation" excludable from the deduction limitation under Section 162(m), the administrator of the 2006 Plan must consist of two or more "outside directors" within the meaning of Section 162(m). For more information about the 2002 Plan, the 2006 Plan and the ESPP, please read the disclosure under "Compensation of Executive Officers and Directors—Equity Incentive Plans" below. For more information about the 2016 Plan, please read the disclosure under Proposal No. 3 above and the full text of the 2016 Plan attached asAnnex A hereto.

    We have historically granted our named executive officers a combination of stock options and RSUs, although in the following three typespast several years our named executive officers have received exclusively stock options. These awards are subject to both time-based and performance-based vesting requirements, and the compensation committee has exercised its judgment on the weighting of equitystock options relative to RSUs in any given year.
    Time and Performance-Based Stock Options:

    Afford the recipient the option to purchase shares of our common stock at a stated price per share.

    All stock option awards granted under our equity incentive plans include an exercise price equal to the closing price of our common stock on the applicable grant date, and the grant date is always on or after the date of compensation committee approval.

    Time-based stock option awards granted to our named executive officers typically vest at a rate of 34% on the one-year anniversary of the date of grant and 33% on each subsequent anniversary until fully vested, subject to the named executive officer’s continued service for our Company at each vesting date.

    The vesting of performance-based options granted to our named executive officers generally requires the achievement of objective performance targets or the attainment of a premium price per common share that is set as a multiple of the closing price of a share of common stock on the grant date. The vesting of performance-based options is also subject to the named executive officer’s continued service for our Company at each vesting date.

    42


    Time and Performance- Based RSUs:

    Full-value awards that represent the contingent right to receive shares of our common stock upon achievement of stated vesting criteria.

    Time-based RSU awards granted to our named executive officers typically vest at a rate of 34% on the one-year anniversary of the date of grant and 33% on each subsequent anniversary until fully vested, subject to the named executive officer’s continued service for our Company at each vesting date.

    The vesting of performance-based RSUs granted to our named executive officers generally requires the achievement of objective performance targets or the attainment of a premium price per common share that is set as a multiple of the closing price of a share of common stock on the grant date. The vesting of performance-based RSUs is also subject to the named executive officer’s continued service for our Company at each vesting date.
    Equity Awards Granted in 2023
    In February 2023, the compensation committee awarded time-based stock options to our named executive officers. In 2023, our equity incentive plans:grants to our named executive officers consisted entirely of stock options restricted stock units ("RSUs")that vest over 3 years and price-vested units ("Price-Vested Units" or PVUs"). Stock option awards affordexpire at the recipient the optionend of 10 years. These options include an exercise price equal to purchase shares of our common stock at a stated price per share. All stock option awards granted under our equity incentive plans are priced based on the closing price of our common stock on the applicable grant date,date. As noted above, we grant options to executives to align executives with stockholders interests and to provide incentive and potential upside to executives upon achieving long-term growth of the grant dateCompany. Our compensation committee and our executive team believe in the long-term growth potential of the Company, and believe stock options to be an appropriate vehicle in properly incentivizing and rewarding progress in achieving growth. Below we outline the stock option grants we made to executives in 2023:
    ExecutiveStock
    Options
    Granted
    Grant Date
    Fair Value
    Strike Price
    Andrew Littlefair187,500$738,750$5.69
    Robert Vreeland112,500$443,250$5.69
    Mitchell Pratt112,500$443,250$5.69
    Barclay Corbus250,000$985,000$5.69
    In addition to his stock option award, Mr. Pratt was also granted an equity award in the Company’s subsidiary, CLNE PlasmaFlow Holdings, LLC. In connection with Mr. Pratt’s transition from Chief Operating Officer to Chief Technology Development Officer in May 2023, he is always on or afterexpected to devote a portion of his time to growing the dateCLNE PlasmaFlow business, and this separate equity award was intended as an incentive to motivate Mr. Pratt to drive value creation in this portion of the Company’s business. Mr. Pratt’s CLNE PlasmaFlow equity award is structured as a “profits interest” and vested immediately upon grant.
    Current Performance of 2021 Performance Stock Options
    In December of 2021, the compensation committee meeting at which the awards are approved. RSUs are full-value awards that represent the contingent right to receive shares of our commonawarded two performance-based stock upon achievement of stated vesting criteria. Stock option and RSU awards grantedoptions as additional long-term incentives to our named executive officers typically vestofficers. At that time, the Company was at a ratecritical juncture, and the compensation committee determined that it was of 34%primary importance to incentivize the named executive officers to strategically execute on expanding the one-year anniversaryCompany’s RNG business over the long term and to create long term stockholder value by increasing the Company’s price per share. These awards have the following performance characteristics:
    1) RNG Performance Options — The RNG performance Options are structured to incentivize long-term RNG growth and the vesting of the date100% of each grant and 33% on each subsequent anniversary until fully vested,is subject to the Company’s attainment of four separate RNG supply vesting tranches, with each tranche requiring us to secure 15 million GGEs of RNG supply via investment in order to vest (i.e., the first tranche will vest if we secure 15 million GGEs of RNG supply via investment, the second tranche will vest if we secure an additional 15 million GGEs of RNG supply via investment for a total of 30 million GGEs, the third tranche will vest if we secure an

    43


    additional 15 million GGEs of RNG supply via investment for a total of 45 million GGEs and the final tranche will vest if we secure an additional 15 million GGEs of RNG supply via investment for a total of 60 million GGEs). We believe these represent challenging multi-year goals that if the named executive officer'sofficers are able to achieve, will help drive our transformative strategic plan and the achievement of our future RNG volume, revenue and income goals. Each named executive officer must also remain in continued service for our Company at each vesting date. PVUsdate in order to vest. As of the record date of the Annual Meeting, one tranche of these options have vested — however, because the strike price on the date of grant — $6.77 — is greater than our trending share price, these options are a formcurrently underwater. We believe these options still hold motivational and retentive value to our executives given our belief in the long-term growth potential of RSUthe business.
    2) Premium Share Price Performance Options — The Premium Share Price Performance options are intended to incentivize the appreciation in which the sharesvalue of our shares. The vesting of 100% of each grant is subject to the award are earned if and when certainour attainment of a stock price hurdles ("Stock Price Hurdles") are achieved. The shares subject to the PVUs are only earned, or "vest," ifrepresenting a greater than 100% premium above the closing price of our common stock equals or exceeds, for twenty consecutive days during the third or fourth year following grant, 135%a share of the price of our common stock on the grant date.


            The compensation committee considers In order for these performance-based options to vest, we must achieve an average closing price equal to or above $14.00 per share over a number of factors when determining the type of equity award to grant to ourtwenty consecutive trading day period. Each named executive officers, including, among others,officer must also remain in continued service for our Company on the statusvesting date in order to vest. As of the named executive officer's then-outstanding equity awards, market factorsRecord Date, this price threshold has not been achieved and the goals sought to be achieved with the award. For instance, the compensation committee has chosen to use PVUs in the past in part because, in its view, PVUs have a strong performance orientation, as the awards are forfeited in full if the Stock Price Hurdle is not achieved within the period specified by the award. Additionally, in determining to grant a combination of stock option and RSU awards with time-based vesting in 2015, the compensation committee desired to provide greater certainty of vesting while still incentivizing long-term performance by delivering value over time and considered the recent volatility in the Company's stock price and the unlikelihood that the outstanding PVUs would vest, as is discussed in greater detail under "—2015 Equity Awards" below.

            To meet the objectives of our compensation program, we have historically awarded equity incentives to our named executive officers on an annual basis in the first or fourth quarters; however, we do not maintain any formal policies with respect to the timing of granting equity awards.

      2015 Equity Awards

            In February and November 2015, the compensation committee awarded RSUs and stock options to our named executive officers in the amounts set forth in the table below. In determining to grant these awards, the committee evaluated the PVUs and stock options granted in 2012, 2013 and 2014, as a whole, and concluded that the terms of such awards, including the exercise prices of stock options and the Stock Price Hurdles of PVUs, may make their vesting out of reach due in part to exogenous factors over which the Company has little control (including the factors described in the Executive Summary above). For example, the applicable Stock Price Hurdle for the PVUs awarded in 2014 and 2012 (the "2014 PVUs" and the "2012 PVUs", respectively) was approximately 322% and 408%, respectively, of the closing price of our common stock on December 31, 2014 and approximately 567% and 448%, respectively, of the closing price of our common stock on December 31, 2015; additionally, the exercise price of the stock options issued to our named executive officers in 2012 is $13.09, or approximately 262% of the closing price of our common stock on December 31, 2014 and approximately 364% of the closing price of our common stock on December 31, 2015. Further, in January 2016, the 2012 PVUs were forfeited in full because the applicable Stock Price Hurdle was not satisfied. As a resultaccordingly, none of these share price conditions, the compensation committee determined it was important to grant additional equity awards to our named executive officers for retention and value delivery purposes. The compensation committee believed that these objectives were best achieved by awarding a combination of RSUs and stock options with the terms described below, on one or two (depending on the named executive officer) occasions in 2015. In making this determination, the compensation committee considered materials provided by Semler Brossy (at the request of the committee) pertaining to, among other things, the 2012 PVUs, the 2014 PVUs and considerations relating to these awards.

            The RSUs are subject to the terms and conditions of the 2006 Plan and a Notice of Grant of Restricted Stock Unit and Restricted Stock Unit Agreement, and vest according to the typical vesting schedule described above. The stock options are subject to the terms and conditions of the 2006 Plan


    and a Notice of Grant of Stock Option and Stock Option Agreement, have exercise prices of $6.01 and $5.02 per share, respectively, and vest according to the typical vesting schedule described above.

    vested.
     
     February 2015 November 2015 
    Named Executive Officer
     Number of
    RSUs
     Number of
    Stock Options
     Number of
    RSUs
     Number of
    Stock Options
     

    Andrew J. Littlefair

      50,000  75,000  40,000  96,000 

    Robert M. Vreeland

          30,000  48,000 

    Mitchell W. Pratt

      50,000  60,000  30,000  70,400 

    Peter J. Grace

      40,000  40,000     

    Barclay F. Corbus

      40,000  50,000  24,000  80,000 

      May 2015 Vreeland Option Award

            In May 2015, the compensation committee granted Mr. Vreeland an option to purchase up to 25,000 shares of common stock. The option is subject to the terms and conditions of the 2006 Plan and a Notice of Grant of Stock Option and Stock Option Agreement, has an exercise price of $8.66 per share and vests according to the typical vesting schedule described above. The compensation committee granted this award in accordance with the terms of the offer letter Mr. Vreeland signed when he became our Chief Financial Officer in October 2014.

      2016 Equity Awards

            In January 2016, the compensation committee awarded RSUs and stock options to our named executive officers in the amounts set forth in the table below. The committee determined it was important to grant additional equity awards to our named executive officers for retention and value delivery purposes, based on the same rationale for granting the 2015 equity awards described above. The compensation committee believed that these objectives were best achieved by awarding a combination of RSUs and stock options with the terms described below. The RSUs are subject to the terms and conditions of the 2006 Plan and a Notice of Grant of Restricted Stock Unit and Restricted Stock Unit Agreement, and vest according to the typical vesting schedule described above. The stock options are subject to the terms and conditions of the 2006 Plan and a Notice of Grant of Stock Option and Stock Option Agreement, have an exercise price of $3.63 per share, and vest according to the typical vesting schedule described above.

    Named Executive Officer
     Number of
    RSUs
     Number of
    Stock Options
     

    Andrew J. Littlefair

      40,000  24,000 

    Robert M. Vreeland

      30,000  12,000 

    Mitchell W. Pratt

      30,000  17,600 

    Peter J. Grace

      40,000  40,000 

    Barclay F. Corbus

      24,000  20,000 

    Change in Control and Post-Termination Severance Benefits

            TheCompensation

    Our employment agreements ofwith our named executive officers, described under “Employment Agreements” below, provide them certain benefits if their employment is terminated, (other thanincluding a termination following a change in control but excluding a termination by the Company for cause or a voluntary termination by the named executive officer without good reason and not following a change in control), including a termination following a change in control.reason. The compensation committee believes these benefits are important tools for retaining the services of our named executive officers and helping to align the interests of our named executive officers with those of our stockholders. The details and amounts of suchthese benefits are described below under "Compensation of Executive Officers and Directors—“Executive Compensation — Potential Payments Upon Termination or Change in Control."


            Equity incentives awarded to our named executive officers under the 2002 Plan and the 2006 Plan prior to November 2014 accelerate and vest in full upon a change in control. All equity incentives awardedawards granted to our named executive officers after November 2014 including the RSUs and stock options awarded to our named executive officers in 2015 and 2016, are subject to double triggerdouble-trigger vesting upon a change in control. The compensation committee previously determined to modify the standard vesting provisions of our named executive officers'officers’ equity awards from "single trigger"“single-trigger” to "double trigger"“double-trigger” vesting in connection with a change in control because it believes that double triggerdouble-trigger vesting more accurately reflects current market practices and is in the best interest of our Company and our stockholders, but still provides appropriate benefits to executives in the event of a termination in connection with a change in control.control, and is thus in the best interests of our Company and our stockholders. Further, we havedo not agreed to makeprovide any excise tax "gross-up"“gross-up” payments to our executives in connection with a change in control.

    Deductibility

    Other Benefits
    We appreciate the tremendous value and contributions of Executiveour employees, and we believe providing a competitive employee benefits program is one of our most important investments. As a result, we offer an employee benefits program with a wide range of plans designed to promote the health and personal welfare of all employees, including our named executive officers. Participation in these plans is generally available to all of our employees on the same basis. The Company provides minimal perquisites to executives which are noted in the description of “All Other Compensation” disclosed in the Summary Compensation

            It is our policy generally to seek to qualify compensation paid to executive officers for deductibility under Section 162(m). Section 162(m) generally prohibits us from taking a tax deduction in any tax year for compensation paid to certain executive officers that exceeds $1,000,000, unless the compensation is payable only upon the achievement Table of pre-established, objective performance goals under a plan approved by our stockholders. this Proxy Statement.

    Employment Agreements
    We believe the stock option, RSU and PVU awards we have granted toentered into employment agreements with each of our named executive officers on December 31, 2015 (and entered into an amended employment agreement with Mr. Pratt in May 2023 in connection with his transition to a non-executive officer position). These employment agreements have the following key terms:

    Each employment agreement, other than Mr. Pratt’s, is passed its initial three-year term and now automatically renews on December 31 for additional one-year periods (unless either party provides

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    TABLE OF CONTENTS

    notice of non-renewal). The initial term of Mr. Pratt’s employment agreement runs through May 17, 2025 and automatically renews thereafter for additional one-year periods (unless either party provides notice of non-renewal).

    Each named executive officer is entitled to receive an annual base salary of no less than his base salary in 2015, other than Mr. Pratt, who is entitled to receive an annual base salary of no less than his base salary under the 2006 Plannew employment agreement, $550,000.

    Each named executive officer is eligible to receive an annual cash incentive of up to a specified percentage of his then-current annual base salary under the terms of our performance-based cash incentive plan in effect for the applicable year. Mr. Littlefair is eligible to receive 70%, 100% or 150% of $778,680 for our achievement of the base, middle and maximum performance targets, respectively, and we consider achievement of the middle performance targets to be Mr. Littlefair’s target incentive amount; each of Messrs. Vreeland, Pratt, and Corbus is eligible to receive 50%, 70% or 100% of his respective base salary for our achievement of the base, middle and maximum performance targets, respectively, and we consider achievement of the middle performance targets to be Messrs. Vreeland’s Pratt’s, and Corbus’ target incentive amount.

    Each named executive officer would be entitled to receive certain severance compensation and benefits under certain circumstances upon a termination of the named executive officer’s employment with us. The details of this severance are described below under “Executive Compensation —  Potential Payments Upon Termination or Change in Control.” The employment agreements condition severance payments on a so-called “double-trigger” upon a change in control. The employment agreements also do not include any “gross-up” provision for any excise taxes that may be triggered in connection with a change in control under Sections 280G and 4999 of the Code, and instead include a “best-net” cutback provision under which benefits are reduced to avoid triggering any such excise taxes unless the after-tax benefit is greater to the named executive officer without the cutback. The compensation committee determined that these terms are appropriate because they better align our severance and change of control payment practices with current market expectations and the 2002 Plan qualify as performance-based compensation under Section 162(m), although there is no guarantee that such equity awards, or any other performance-based compensation paid tointerests of our named executive officers qualify as such. We reserve the discretion to pay compensation to our officers that may not be deductible if we determine that paying such compensation is in the best interestswith those of our Companystockholders, while still providing a level of benefits the compensation committee believes is fair and our stockholders.

    reasonable and maintaining the retention value of these benefits.

    Other Compensation Policies
    Executive Stock Ownership Guidelines

    We believe that it is important to encourage our named executive officers to hold a material amount of our common stock, which links their long-term economic interest directly to that of our stockholders. To achieve this goal, we have established stock ownership guidelines applicable to our named executive officers. The compensation committee recently examined our current stock ownership guideline levels relative to market practice and made adjustments to further align executive interests with our stockholders. These updated guidelines provide that our Chief Executive Officer is required to own shares of our common stock valued at threefive times his annual base salary (vs. three, previously) or more, and each of our Chief Financial Officer, Chief Operating Officer, Chief Marketing Officer (if any) and Senior Vice President, Strategic Development,other named executive officers is required to own shares of our common stock valued at one and one half times theirhis annual base salary (vs. one, previously) or more. Such level of ownership must be attained by the last to occur of (i) December 13, 2017 and (ii)within five years after the date of an executive officer’s initial appointment as an executive officer.such. Stock options and other rights to acquire our common stock are not counted toward satisfaction of these stock ownership requirements. Executives who attain the applicable stock ownership level by the stated deadline will continue to satisfy the stock ownership requirements. Mr. Pratt hasrequirements if the value of their stock holdings declines after such deadline solely due to a decrease in the trading price of our common stock. Each of our named executive officers had satisfied these stock ownership guidelines as of the Record Date.

    We have also adopted an equity award grant policy that we believe aligns with best corporate governance practices. Our general policy is to grant equity awards no less than 1 business day after the filing of our Annual Report filed on Form 10-K, although we do have the discretion to grant equity awards at other times if determined to be appropriate by the compensation committee.

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    Hedging and Pledging of Company Securities

    Our policies do not permit any of our executive officers or directors to "hedge"“hedge” ownership of our securities by engaging in short sales or trading in put options, call options or other derivatives involving our securities. This means that our employees and directors may not purchase financial instruments or otherwise engage in transactions that hedge or offset, or are designed to hedge or offset, any decrease in the market value of our equity securities. Further, our policies do not permit an executive officer or director to hold our securities in a margin account or pledge our securities as collateral for a loan unless the executive officer or director demonstrates to our satisfaction financial capacity to substitute other assets for Company securities in the event the person failsof a failure to meet a margin call or defaultsa default on athe loan.

    As of the date of this Proxy Statement, Mr. Pickensnone of our directors or executive officers has pledged 17,441,860 outstanding shares as collateral to financial institutions. We have disclosed Mr. Pickens' pledging activity in eachany of our annual reports on Form 10-K, quarterly reports on Form 10-Q and proxy statements on Schedule 14A


    beginning with our annual report on Form 10-K for the year ended December 31, 2008. The Company periodically evaluates Mr. Pickens' pledging activity, and upon our request Mr. Pickens demonstrates that he has financial capacity to substitute other assets for the pledged shares. In addition, during the course of such periodic evaluations, the Company has also taken into account, among other things, the following: it is in the best interest of our stockholders for Mr. Pickens to continue serving on the Board, as he is one of our co-founders and his reputation, contacts, and advocacy for our business and U.S. energy policy create opportunities for the Company that we believe would be otherwise unavailable; Mr. Pickens is under no obligation, legal or otherwise, to limit his pledging activity or to hold more than 5,000 shares of our common stock for an extended period of time; Mr. Pickens' pledging activity is disclosed in the periodic reports we publicly file with the SEC; and none of our significant stockholders (holders of more than 1% of our issued and outstanding shares) has expressed to us concerns about Mr. Pickens' pledging activity.

    he or she owns.

    Clawback Policy

            In January 2015, the

    The compensation committee has adopted a formal clawback policy regarding recoupment, or a “clawback,” of cash compensation in certain circumstances (the "Clawback Policy").circumstances. Our clawback policy was amended in 2023 to comply with the latest SEC and NASDAQ clawback policy requirements. The purpose of the Clawback Policythis clawback policy is to help ensure that executives act in the best interestinterests of the Company. The Clawback Policy requiresCompany and our stockholders.
    Tax and Accounting Effects
    In designing our compensation programs, the compensation committee considers the financial impact and tax and accounting effects that each element of compensation will or may have on the Company and our executives. One such area the compensation committee considers is the tax deductibility of each component of executive compensation. Prior to December 22, 2017, when the Tax Cuts and Jobs Act of 2017 (“TCJA”) was signed into law, Section 162(m) generally prohibited us from taking a tax deduction in any tax year for compensation paid to certain executive officers that exceeded $1,000,000, unless the compensation was payable only upon the achievement of pre-established, objective performance goals under a plan approved by our officers, includingstockholders. As a result, we believe certain stock option and RSU awards we granted to our named executive officers to repay or return any cash bonus or other incentive cash compensation awarded to or received by such officer(s) inbefore the event we issue a restatement of our financial statements due to material noncompliance with any financial reporting requirements and the restatement was caused by such officer's fraud, intentional misconduct or gross negligence. In each case, the officer(s) would be required to repay or return the compensation awarded to or received by the officer during the 12-month period following the filingimpact of the erroneousTCJA have qualified as performance- based compensation under Section 162(m), although there is no guarantee that such equity awards, or any other performance-based compensation paid to our named executive officers, qualify as such. Under the TCJA, the exception for performance-based compensation under Section 162(m) has been repealed, so that the $1,000,000 limit on tax deductions in a tax year generally applies to anyone serving as our chief executive officer or our chief financial statementofficer at issue. Pursuantany time during a taxable year as well as our top three other highest-compensated executive officers serving at fiscal year-end. These changes generally do not apply to the Clawback Policy, thecompensation provided pursuant to a binding written contract in effect on November 2, 2017 that is not modified in any material respect after that date. The compensation committee will consider a number of different factors and exercise its business judgment in determining appropriate amounts, if any, to recoup. Further, the compensation committee retainsreserves the discretion to adjustmake any executive compensation decisions that it considers to be in the best interests of our Company and our stockholders, including to award compensation that may not be deductible or recover awards or payments if the relevant performance measures upon which they are based are restated or are otherwise adjustedto amend existing compensation arrangements in a manner that would reduce the size of the award or payment. The Clawback Policy applies to cash compensation awarded to our officers from and after the date of its adoption. Once final rules regarding recoupment policies are released under the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, the compensation committee intends to review the Clawback Policy and, if necessary, amend such policy to comply with the new mandates.

    Amended and Restated Employment Agreements

            On December 31, 2015, we entered into amended and restated employment agreements with our named executive officers (each, an "Employment Agreement") that supersede and replace in all respects the employment agreements between our Company and the named executive officers that expired pursuant tocould limit their terms on December 31, 2015 (such agreements, the "Prior Employment Agreements").

            Each Employment Agreement has an initial term ending on December 31, 2018, and thereafter renews for a one-year period. Each Agreement provides that the named executive officer is entitled to an annual base salary of no less than his salary for 2015 and is eligible for an annual cash bonus of up to a specified percentage of his then-current annual base salary under the terms of our performance-based cash bonus plan in effect for the applicable fiscal year. Pursuant to the Employment Agreements, under certain circumstances upon a termination of a named executive officer's employment, he would be entitled to the severance compensation and benefits described below under "Compensation of Executive Officers and Directors—Potential Payments Upon Termination or Change in Control." The Employment Agreements do not include any "gross up" provision for any excise taxes that may be triggered in connection with a change in control under Sections 280G and 4999 of the Code, and

    deductibility.


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    instead include a "best-net" cutback provision where benefits are reduced to avoid triggering any such excise taxes unless the after-tax benefit is greater to the named executive officer without the cutback.

            The material terms of the Employment Agreements are substantially similar to the terms of the Prior Employment Agreements, except that (1) the initial term of the Employment Agreements is three years, rather than the five-year terms of the Prior Employment Agreements, (2) the Employment Agreements provide larger severance payments than the Prior Employment Agreements, but condition these payments upon a so-called "double trigger" upon a change in control, rather than entitling the named executive officers to severance payments upon a "single trigger" as provided in the Prior Employment Agreements, and (3) the Employment Agreements do not include any "gross-up" provision for taxes resulting from the automobile benefits provided to certain of our named executive officers, which was included in certain of the Prior Employment Agreements. The compensation committee determined to vary these three elements of the Employment Agreements primarily for the following reasons:

    Compensation Committee Report


    COMPENSATION COMMITTEE REPORT
    We, the compensation committee of the Board of Clean Energy Fuels Corp., have reviewed and discussed the Compensation Discussion and Analysis (set forth above) with the management of the Company, and based on such review and discussion, have recommended to the Board inclusion ofthat the Compensation Discussion and Analysis be included in this Proxy Statement.

    Compensation Committee:
    Warren I. Mitchell,
    Chairman
    John S. Herrington
    James E. O'Connor
    Kenneth M. Socha

    Risks Related to Compensation Policies and Practices

            TheCommittee:
    Lizabeth A. Ardisana,
    Chairman
    Kenneth M. Socha
    Vincent C. Taormina

    This compensation committee has considered whether our overall compensation program for employees creates incentives for employeesreport shall not be deemed to take excessivebe “soliciting material,” or unreasonable risksto be “filed” with the SEC or subject to Regulation 14A or 14C under the Exchange Act, other than as provided by applicable SEC rules, or to the liabilities of Section 18 of the Exchange Act, except to the extent that could materially harm our Company. Although risk-taking iswe specifically request that the information be treated as soliciting material or specifically incorporate it by reference into a necessary part of building our business,document filed under the Securities Act or the Exchange Act. This compensation committee has focused on aligningreport will not be deemed to be incorporated by reference into any filing under the Company's compensation policies withSecurities Act or the long-term interests of the Company and avoiding short-term rewards for management decisions that could pose long-term risksExchange Act, except to the Company. Although a portion of our executive compensation plan is performance-based, which could motivate risk-taking,extent that we do not believe that our compensation structure encourages excessive or unnecessary risk-taking. We believe our approach to goal-setting, mix of types of


    compensation, payouts at multiple levels of performance and evaluation of performance results assist in mitigating such risks, as follows:

      Our compensation structure includes a combination of a competitive base salary, equity awards to align the interests of our employees and named executive officers with those of our stockholders, and annual cash bonuses to encourage retention and reward executives for achieving Company objectives.

      To discourage excessive or unnecessary risk-taking, for 2015, the cash payment awards for each named executive officer were based on three distinct performance metrics, with 33% of the total potential cash bonus award based on each such performance metric, as follows: 33% based on the volume of GGEs of natural gas deliveredspecifically incorporate it by us, 33% based on the target adjusted EBITDA of our Company, as we defined it for compensation purposes, and 33% based on the achievement of the Company's strategic initiatives. Additionally, the compensation committee retains the discretion to increase or decrease cash payouts under this plan based on factors it deems relevant and appropriate.

      Pursuant to the Clawback Policy, certain of our officers are required to repay or return any cash bonus or other incentive cash compensation awarded to or received by such officer(s) in the event we issue a restatement of our financial statements due to material noncompliance with any financial reporting requirements and the restatement was caused by such officer's fraud, intentional misconduct or gross negligence. Further, the compensation committee retains the discretion to adjust or recover awards or payments if the relevant performance measures upon which they are based are restated or are otherwise adjusted in a manner that would reduce the size of the initial award or payment.

            We further believe that our internal legal and financial controls appropriately mitigate the probability and potential impact of an individual employee committing our Company to a harmful long-term business transaction in exchange for short-term compensation benefit.

    Total Compensation Actually Paid

            Actual compensation paid in 2015 to our named executive officers is shown in the table below. This table supplements, but is not a substitute for, the reference.


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    EXECUTIVE COMPENSATION
    Summary Compensation Table that appears on page 50 of this Proxy Statement. The primary difference between this supplemental table and the Summary Compensation Table is the method used to value stock and option awards. SEC rules require that the grant date fair value of all stock and option awards be reported in the Summary Compensation Table in the year in which they were granted. As a result, a significant portion of the total compensation amounts reported in the Summary Compensation Table relates to stock and option awards that have not vested and for which the value is therefore uncertain (and which may end up being forfeited and have no value at all). For example, the 2012 PVUs held by the named executive officers were all forfeited in January 2016 because the applicable Stock Price Hurdle was not satisfied. In contrast, this supplemental table includes only stock and option awards that vested during the applicable year and shows the fair value of those awards. It should be noted that the named executive officers may never realize any value attributed to these awards, since the ultimate value of the option


    awards will depend on our stock price when the options are exercised and the ultimate value of the stock awards will depend on the value of the issued shares, if any.

    Name
     Year Salary(1)
    ($)
     Other Cash
    Compensation(2)
    ($)
     Stock
    Awards
    Vested in
    Year(3)
    ($)
     Option
    Awards
    Vested in
    Year(4)
    ($)
     All Other
    Compensation(5)
    ($)
     Total
    Compensation
    Actually Paid
    ($)
     

    Andrew J. Littlefair

      
    2015
      
    712,792
      
    460,719
      
    75,176
      
      
    2,400
      
    1,251,087
     

      2014  778,680  626,712  142,749    8,050  1,556,191 

      2013  756,000  671,640      11,500  1,439,140 

    Robert M. Vreeland

      
    2015
      
    332,692
      
    142,917
      
      
      
    2,330
      
    477,939
     

      2014  179,713  68,495        248,208 

    Mitchell W. Pratt

      
    2015
      
    481,268
      
    196,518
      
      
      
    2,400
      
    680,186
     

      2014  481,268  274,269      8,050  763,587 

      2013  467,250  321,944      11,500  800,694 

    Peter J. Grace

      
    2015
      
    360,500
      
    270,844
      
      
      
    2,400
      
    633,744
     

      2014  360,500  603,324      8,050  971,874 

      2013  350,000  530,575      11,500  892,075 

    Barclay F. Corbus

      
    2015
      
    443,415
      
    181,061
      
      
      
    1,800
      
    626,276
     

      2014  443,415  252,697      6,125  702,237 

      2013  430,500  304,369      8,750  743,619 

    (1)
    Amounts shown equal the amounts reported in the "Salary" column of the Summary Compensation Table.

    (2)
    Amounts shown equal the sum of the amounts reported in the "Bonus" and "Non-Equity Incentive Plan Compensation" columns of the Summary Compensation Table.

    (3)
    Amounts shown represent the aggregate fair value of all stock awards that vested during the applicable year. The fair value of vested stock awards is calculated by multiplying the number of shares vested by the closing price of the Company's common stock on the applicable vesting date.

    (4)
    Amounts shown represent the aggregate fair value of all option awards that vested during the applicable year. The fair value of vested option awards is calculated by multiplying the number of shares vested by the difference (but not less than zero) between the exercise price and the closing price of the Company's common stock on the applicable vesting date.

    (5)
    Amounts shown equal the Company's matching contributions under its savings plan qualified under Section 401(K) of the Code.


    COMPENSATION OF EXECUTIVE OFFICERS AND DIRECTORS

    Summary Compensation Table

    The following table summarizes the total compensation awarded to, earned by or paid to each of our named executive officers for the fiscal years ended December 31, 2013, 20142021, 2022 and 2015:

    2023:
    Name and Principal PositionYearSalary
    ($)
    Stock
    Awards
    ($)(1)
    Option
    Awards
    ($)(1)
    Non-Equity
    Incentive Plan
    Compensation
    ($)(2)
    All Other
    Compensation
    ($)(3)
    Total
    ($)
    Andrew J. Littlefair
    President and Chief Executive Officer
    2023700,812738,750482,81155,4851,977,858
    2022700,812852366,86156,9851,125,510
    2021700,8121,246,0327,954,892839,33770,12010,811,193
    Robert M. Vreeland
    Chief Financial Officer
    2023462,721443,250195,58912,0001,113,560
    2022450,000142,95613,500606,456
    2021450,000696,3123,618,822334,61113,0005,112,745
    Mitchell W. Pratt
    Former Chief Operating Officer and Corporate Secretary(4)
    2023539,37995,400443,250230,97012,0001,320,999
    2022519,769852165,12013,500699,241
    2021519,769696,3123,618,822386,49013,0005,234,393
    Barclay F. Corbus
    Senior Vice President,
    Strategic Development and Head
    of Renewable Fuels
    2023495,940985,000209,97311,9031,702,816
    2022478,888152,13313,500644,521
    2021478,888696,3123,733,322356,09213,0005,277,614

    Name and Principal Position
     Year Salary
    ($)
     Bonus
    ($)
     Stock
    Awards
    ($)(1)
     Option
    Awards
    ($)(1)
     Non-Equity
    Incentive Plan
    Compensation
    ($)(2)
     All Other
    Compensation
    ($)(3)
     Total
    ($)
     

    Andrew J. Littlefair

      2015  712,792    501,300  558,870  460,719  2,400  2,236,081 

    President & Chief

      2014  778,680    619,500    626,712  8,050  2,032,942 

    Executive Officer

      2013  756,000  150,000  599,993    521,640  391,300  2,418,933 

    Robert M. Vreeland

      
    2015
      
    332,692
      
      
    278,560
      
    150,600
      
    142,917
      
    2,330
      
    907,099
     

    Chief Financial Officer

      2014  179,713  68,495    318,990  18,495    585,693 

    Mitchell W. Pratt

      
    2015
      
    481,268
      
      
    451,100
      
    426,488
      
    196,518
      
    2,400
      
    1,557,774
     

    Chief Operating Officer

      2014  481,268    392,350    274,269  8,050  1,155,937 

    And Secretary

      2013  467,250  100,000      221,944  296,350  1,085,544 

    Peter J. Grace

      
    2015
      
    360,500
      
      
    240,400
      
    133,200
      
    270,844
      
    2,400
      
    1,007,344
     

    Senior Vice President,

      2014  360,500    278,775    603,324  8,050  1,250,649 

    Sales and Finance

      2013  350,000        530,575  11,500  892,075 

    Barclay F. Corbus

      
    2015
      
    443,415
      
      
    360,880
      
    424,100
      
    181,061
      
    1,800
      
    1,411,256
     

    Senior Vice President,

      2014  443,415    309,750    252,697  6,125  1,011,987 

    Strategic Development

      2013  430,500  100,000      204,369  230,300  965,169 

    (1)

    The amounts listedshown in this column reflectrepresent the grant date fair valuesvalue of awards granted in each of the periods calculated in accordance with Financial Accounting Standards Board'sBoard’s Accounting Standards Codification Topic 718, "Share Based Payment" ("“Compensation — Stock Compensation” ​(“FASB ASC 718"718”). For a discussion regardingabout the valuation modelmodels and assumptions used to calculate the fair value of these awards, see note 11Note 13 to the consolidated financial statements included in the Annual Report.

    Our named executive officers received stock option grants in 2023, and Mr. Pratt was additionally granted an award of 833,334 profits interest units under the CLNE PlasmaFlow Holdings, LLC 2023 Equity Incentive Plan that vested upon grant. Mr. Pratt’s profits interest award was accounted for under FASB ASC 718 using the Black-Scholes-Merton Option Pricing Model. No equity awards were granted to our named executive officers in 2022, with the exception of 150 restricted stock units awarded to each of Messrs. Littlefair and Pratt, along with various other Company employees, on December 19, 2022 in recognition for over 20 years of service to the Company.
    (2)

    The amounts listedshown in thisthe Non-Equity Incentive Plan Compensation column represent the cash bonusesincentives paid under our performance-based cash bonusincentive plan, and the Finance Services Bonus paid to Mr. Grace in 2015, 2014 and 2013. See the discussionsas described under "Compensation“Compensation Discussion and Analysis—ElementsAnalysis — Components of Compensation—Compensation — Cash Bonuses—2015 Performance-Based Cash Bonus Plan" and "Compensation Discussion and Analysis—Elements of Compensation—Cash Bonuses—Grace Finance Services Bonus."

    Incentives” above.
    (3)

    The 2015 amounts shown in thisthe All Other Compensation column are attributable torepresent, (a) for all named executive officers, the Company'sCompany’s matching contributions under its savings plan qualified under Section 401(k) of the Code.Code, and (b) for Mr. Littlefair in 2023, $45,511.70 paid by the Company for life insurance premiums.

    (4)
    On May 17, 2023, Mr. Pratt transitioned from Chief Operating Officer to Chief Technology Development Officer and ceased being an executive officer of the Company. He is included as a named executive officer for purposes of this proxy on account of his service in 2023.

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    Grants of Plan-Based Awards in Fiscal Year 2015

    The following table summarizes the amounts ofall plan-based awards granted in 2015 to each of the named executive officers:

    officers in 2023:
    Name(1)Grant DateEstimated Future Payouts
    Under Non-Equity Incentive
    Plan Awards(2)
    Estimated
    Future
    Payouts
    Under
    Equity
    Incentive
    Plan Awards
    Target
    (#)
    All Other
    Stock
    Awards:
    Number of
    Shares of
    Stock or
    Units
    (#)
    All Other
    Option
    Awards:
    Number of
    Securities
    Underlying
    Options
    (#)
    Exercise
    or
    Base
    Price of
    Option
    Awards
    $(/Sh)
    Grant
    Date Fair
    Value of
    Stock and
    Option
    Awards(3)
    ($)
    Threshold
    ($)
    Target
    ($)
    Maximum
    ($)
    Andrew J. Littlefair545,076778,6801,168,020
    2/17/2023187,5005.69738,750
    Robert M. Vreeland232,875326,025465,750
    2/17/2023112,5005.69443,250
    Mitchell W. Pratt275,000385,000550,000
    2/17/2023112,5005.69443,250
    6/1/2023833,334(4)95,400
    Barclay F. Corbus250,000350,000500,000
    2/17/2023250,0005.69985,000

     
      
      
      
      
     All Other
    Stock
    Awards:
    Number of
    Shares of
    Stock or
    Units(2)
    (#)
     All Other
    Option
    Awards:
    Number of
    Securities
    Underlying
    Options(3)
    (#)
      
      
     
     
      
     Estimated Future Payouts
    Under Non-Equity Incentive
    Based Plans(1)
      
     Grant
    Date Fair
    Value of
    Stock and
    Option
    Awards(4)
    ($)
     
     
      
     Exercise or
    Base Price of
    Option
    Awards
    ($/Sh)
     
    Name
     Grant Date Threshold
    ($)
     Target
    ($)
     Maximum
    ($)
     

    Andrew J. Littlefair

        545,076  778,680  1,168,020         

      02/27/2015        50,000      300,500 

      02/27/2015          75,000  6.01  249,750 

      11/16/2015        40,000      200,800 

      11/16/2015          96,000  5.02  309,120 

    Robert M. Vreeland

      
      
    175,000
      
    245,000
      
    350,000
      
      
      
      
     

      05/12/2015          25,000  8.66  124,000 

      11/16/2015        30,000      150,600 

      11/16/2015          48,000  5.02  154,560 

    Mitchell W. Pratt

      
      
    240,634
      
    336,888
      
    481,267
      
      
      
      
     

      02/27/2015        50,000      300,500 

      02/27/2015          60,000  6.01  199,800 

      11/16/2015        30,000      150,600 

      11/16/2015          70,400  5.02  226,688 

    Peter J. Grace

      
      
    180,250
      
    252,350
      
    360,500
      
      
      
      
     

      02/27/2015        40,000      240,400 

      02/27/2015          40,000  6.01  133,200 

    Barclay F. Corbus

      
      
    221,708
      
    310,391
      
    443,415
      
      
      
      
     

      02/27/2015        40,000      240,400 

      02/27/2015          50,000  6.01  166,500 

      11/16/2015        24,000      120,480 

      11/16/2015          80,000  5.02  257,600 

    (1)
    Amounts
    Time-based stock options that vest over a period of three years were granted to all of our named executive officers in 2023. Mr. Pratt was also awarded a grant of profits interests under the CLNE PlasmaFlow Holdings, LLC 2023 Equity Incentive Plan that was fully vested upon grant.
    (2)
    The amounts shown in these columns represent the possible payouts under the 20152023 performance-based cash bonusincentive plan based on the achievement oflevels for certain specified Company performance targets and strategic initiatives.criteria. The actual amounts paid pursuant to the 20152023 performance-based cash bonusincentive plan are reported in the Summary Compensation Table in the "Non-Equity“Non-Equity Incentive Plan Compensation"Compensation” column. The Company performance targets and strategic initiatives under the 20152023 performance-based cash bonusincentive plan as well as the compensation committee's payout determinations, are detailed aboveis described under "Compensation“Compensation Discussion and Analysis—ElementsAnalysis — Components of Compensation—Compensation — Cash Bonuses—2015Incentives — 2023 Performance-Based Cash Bonus Plan."

    (2)
    Incentive Plan” above.
    (3)
    The sharesamounts shown in this column represent RSU awards granted on February 27, 2015 and November 16, 2015 pursuant to our 2006 Plan. Each RSU award vests 34% on the first anniversary of the date of grant and 33% on each subsequent anniversary until fully vested, in each case subject to continuing service by the named executive officer.

    (3)
    The shares shown in this column represent option awards granted on February 27, 2015, May 12, 2015 and November 16, 2015 pursuant to our 2006 Plan. Each option award vests 34% on the first anniversary of the date of grant and 33% on each subsequent anniversary until fully vested, in each case subject to continuing service by the named executive officer.

    (4)
    Stock and option awards are shown at their grant date fair value of awards granted in 2023 calculated in accordance with FASB ASC 718. For a discussion regardingabout the valuation modelmodels and assumptions used to calculate the fair value of these awards, see note 11Note 13 to the consolidated financial statements included in the Annual Report.
    Report and Footnote 1 to the Summary Compensation Table contained in this Proxy Statement.

    (4)
    Represents a grant of profit interests under the CLNE PlasmaFlow Holdings, LLC 2023 Equity Incentive Plan.

    49

    TABLE OF CONTENTS


    Outstanding Equity Awards at 2015 Fiscal Year End

    The following table summarizes outstanding equity awards held by our named executive officers at December 31, 2015:

     
     Option Awards Stock Awards 
    Name
     Number of
    Securities
    Underlying
    Unexercised
    Options—
    Exercisable
    (#)
     Number of
    Securities
    Underlying
    Options—
    Unexercisable
    (#)
     Option
    Exercise
    Price
    ($)
     Option
    Expiration
    Date
     Number of
    Shares or
    Units of
    Stock That
    Have Not
    Vested
    (#)
     Market
    Value of
    Shares or
    Units of
    Stock That
    Have Not
    Vested
    ($)
     Equity
    Incentive Plan
    Awards:
    Number of
    Unearned
    Shares, Units
    or Other
    Rights That
    Have Not
    Vested
    (#)
     Equity
    Incentive Plan
    Awards:
    Market or
    Payout Value
    of Unearned
    Shares, Units
    or Other
    Rights That
    Have Not
    Vested
    ($)
     

    Andrew J. Littlefair

      525,000(1)   12.00  5/23/2017         

      100,000(2)   15.27  12/12/2017         

      155,862(3)   5.09  12/9/2018         

      117,828(4)   6.33  1/1/2019         

      50,000(5)   14.06  10/8/2019         

      100,000(7)   13.49  12/1/2020         

      100,000(8)   14.22  1/3/2021         

      150,000(9)   13.09  12/12/2022         

                  400,000(10) 1,440,000(19)

              15,126(11) 54,454(19)    

                  75,000(12) 370,000(19)

        75,000(14) 6.01  02/27/2025         

              50,000(15) 180,000(19)    

        96,000(17) 5.02  11/16/2025         

              40,000(18) 144,000(19)    

    Robert M. Vreeland

      
    25,500
      
    49,500

    (13)
     
    6.51
      
    11/4/2024
      
      
      
      
     

        25,000(16) 8.66  5/12/2025         

        48,000(17) 5.02  11/16/2025         

              30,000(18) 108,000(19)    

    Mitchell W. Pratt

      
    300,000

    (1)
     
      
    12.00
      
    5/23/2017
      
      
      
      
     

      100,000(2)   15.27  12/12/2017         

      71,274(3)   5.09  12/9/2018         

      52,935(4)   6.33  1/1/2019         

      40,000(5)   14.06  10/8/2019         

      50,000(7)   13.49  12/1/2020         

      50,000(8)   14.22  1/3/2021         

      75,000(9)   13.09  12/12/2022         

                  215,000(10) 774,000(19)

                  47,500(12) 171,000(19)

        60,000(14) 6.01  02/27/2025         

              50,000(15) 180,000(19)    

        70,400(17) 5.02  11/16/2025         

              30,000(18) 108,000(19)    

    Peter J. Grace

      
    60,900

    (1)
     
      
    12.00
      
    5/23/2017
      
      
      
      
     

      35,000(2)   15.27  12/12/2017         

      18,184(3)   5.09  12/9/2018         

      13,747(4)   6.33  1/1/2019         

      17,500(5)   14.06  10/8/2019         

      17,500(7)   13.49  12/1/2020         

      45,000(9)   13.09  12/12/2022         

                  110,000(10) 396,000(19)

                  33,750(12) 121,500(19)

        40,000(14) 6.01  02/27/2025         

              40,000(15) 144,000(19)    

    Barclay F. Corbus

      
    350,000

    (6)
     
      
    13.25
      
    9/10/2017
      
      
      
      
     

      15,008(3)   5.09  12/9/2018         

      54,645(4)   6.33  1/1/2019         

      40,000(5)   14.06  10/8/2019         

      50,000(7)   13.49  12/1/2020         

      50,000(8)   14.22  1/3/2021         

      75,000(9)   13.09  12/12/2022         

                  200,000(10) 720,000(19)

                  37,500(12) 135,000(19)

        50,000(14) 6.01  02/27/2025             

              40,000(15) 144,000(19)    

        80,000(17) 5.02  11/16/2025         

              24,000(18) 108,000(19)    
    2023:

    Option Awards(1)Stock Awards(1)
    NameNumber of
    Securities
    Underlying
    Unexercised
    Options
    (#)
    Exercisable
    Number of
    Securities
    Underlying
    Unexercised
    Options
    (#)
    Unexercisable
    Equity
    Incentive
    Plan awards:
    Number of
    Securities
    Underlying
    Unexercised
    Unearned
    Options
    (#)
    Option
    Exercise
    Price
    ($)
    Option
    Expiration
    Date
    Number of
    Shares or
    Units of
    Stock That
    Have Not
    Vested
    (#)
    Market
    Value of
    Shares or
    Units of
    Stock That
    Have Not
    Vested
    ($)(6)
    Andrew J. Littlefair75,0006.012/26/2025
    96,0005.0211/15/2025
    24,0003.631/4/2026
    260,0002.831/13/2027
    213,7501.373/1/2028
    193,0822.192/24/2029
    91,8002.562/24/2030
    123,01260,588(2)10.181/21/2031
    167,50082,500(4)6.7712/7/2031
    62,5001,187,500(5)6.7712/7/2031
    40,392(3)154,701
    187,500(7)5.692/16/2033
    Robert M. Vreeland75,0006.5111/3/2024
    25,0008.665/11/2025
    12,0003.631/4/2026
    109,0912.831/13/2027
    95,0001.373/1/2028
    101,0522.192/24/2029
    51,3002.562/24/2030
    68,74233,858(2)10.181/21/2031
    100,50049,500(4)6.7712/7/2031
    37,500487,500(5)6.7712/7/2031
    112,500(7)5.692/16/2033
    22,572(3)86,451
    Mitchell W. Pratt60,0006.012/26/2025
    70,4005.0211/15/2025
    17,6003.631/4/2026
    90,9092.831/13/2027
    16,9292.562/24/2030
    68,74233,858(2)10.181/21/2031
    100,50049,500(4)6.7712/7/2031
    37,500487,500(5)6.7712/7/2031
    112,500(7)5.692/16/2033
    22,572(3)86,451

    50


    Option Awards(1)Stock Awards(1)
    NameNumber of
    Securities
    Underlying
    Unexercised
    Options
    (#)
    Exercisable
    Number of
    Securities
    Underlying
    Unexercised
    Options
    (#)
    Unexercisable
    Equity
    Incentive
    Plan awards:
    Number of
    Securities
    Underlying
    Unexercised
    Unearned
    Options
    (#)
    Option
    Exercise
    Price
    ($)
    Option
    Expiration
    Date
    Number of
    Shares or
    Units of
    Stock That
    Have Not
    Vested
    (#)
    Market
    Value of
    Shares or
    Units of
    Stock That
    Have Not
    Vested
    ($)(6)
    Barclay F. Corbus50,0006.012/26/2025
    80,0005.0211/15/2025
    20,0003.631/4/2026
    75,9362.831/13/2027
    95,0001.373/1/2028
    101,0522.192/24/2029
    51,3002.562/24/2030
    68,74233,858(2)10.181/21/2031
    100,50049,500(4)6.7712/7/2031
    50,000525,000(5)6.7712/7/2031
    250,000(7)5.692/16/2033
    22,572(3)86,451
    (1)
    This
    Except as otherwise noted, all option and RSU awards granted before May 2016 were granted under our 2006 Plan onand after May 24, 2007, vested1/6 on May 24, 2007 and1/6 on November 24, 2007, and an additional1/3 on each of November 24, 2008 and November 24, 2009, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a

      "change in control" as described in the 2006 Plan, this option, if then outstanding, would vest in full on the date that immediately precedes the change in control.

    (2)
    This option,2016 were granted under our 20062016 Plan, vestedand all such awards vest as follows: 34% of the shares subject to the award vest on the first anniversary of December 12, 2007, the date of grant and vested 33% of the shares subject to the award vest on each subsequent anniversary until all shares are fully vested, subject to continuing service by the named executive officer.officer on each vesting date. The 2006 Plan provides that,treatment of these option and RSU awards upon a termination or change of control is described under “Potential Payments Upon Termination or Change in Control” below.
    (2)
    Represents an option award granted on January 21, 2021.
    (3)
    Represents a RSU award granted on January 21, 2021.
    (4)
    Represents an option award granted on December 7, 2021.
    (5)
    Represents performance-based option awards granted on December 7, 2021. For 250,000 options granted to Mr. Littlefair, 150,000 options granted to each of Messrs. Vreeland and Pratt and for 200,000 options granted to Mr. Corbus: 25% of the eventtotal shares subject to the stock option award vest upon each achievement of a "change in control" as described inspecific volume hurdle related to securing certain levels of RNG GGEs. For 1,000,000 options granted to Mr. Littlefair and 375,000 options granted to each of Messrs. Vreeland, Pratt and Corbus: 100% of the 2006 Plan, this option, if then outstanding, would vest in full on the date that immediately precedes the change in control.

    (3)
    This option, granted under our 2006 Plan, vested 34% on the first anniversary of December 10, 2008, the date of grant, and vested 33% on each subsequent anniversary until fully vested,total shares subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, thisstock option award vest immediately, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (4)
    This option, granted under our 2006 Plan, vested 34% on the first anniversary of January 2, 2009, the date of grant, and vested 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option,at all, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (5)
    This option, granted under our 2006 Plan, vested 34% on the first anniversary of October 9, 2009, the date of grant, and vested 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (6)
    This option, granted under our 2006 Plan, vested 34% on the first anniversary of September 10, 2007, the date of grant, and vested 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (7)
    This option, granted under our 2006 Plan, vested 34% on the first anniversary of December 1, 2010, the date of grant, and vested 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (8)
    This option, granted under our 2006 Plan, vested 34% on the first anniversary of January 3, 2011, the date of grant, and vested 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (9)
    This option, granted under our 2006 Plan, vested as to 34% on the first anniversary of December 12, 2012, the date of grant, and vests 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (10)
    Represents PVU awards granted under our 2006 Plan that will vest if, between January 25, 2014 and January 24, 2016, the closing share price of the Company'sCompany’s common stock on Nasdaq equals or exceeds $20.40$14.00 for twenty20 consecutive trading days. All such PVUs were forfeited in January 2016.

    (11)
    Represents RSUs granted under our 2006 Plan that vested as to 34% on the first anniversary of September 17, 2013, the date of grant, and vests 33% on each subsequent anniversary until fully vested, subject to continuing service by Mr. Littlefair. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, these RSUs will vest in full on the date that immediately precedes the change in control.

    (12)
    PVU awards granted under our 2006 Plan that will vest if, between February 2, 2016 and February 1, 2018, the closing price of the Company's common stock equals or exceeds $16.11 for twenty consecutive trading days.

    (13)
    This option, granted under our 2006 Plan, vested as to 34% on the first anniversary of November 4, 2014, the date of grant, and vests 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (14)
    This option, granted under our 2006 Plan, will vest as to 34% on the first anniversary of February 27, 2015, the date of grant, and vests 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (15)
    Represents RSUs granted under our 2006 Plan that will vest as to 34% on the first anniversary of February 27, 2015, the date of grant, and vests 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, these RSUs will vest in full on the date that immediately precedes the change in control.

    (16)
    This option, granted under our 2006 Plan, will vest as to 34% on the first anniversary of May 12, 2015, the date of grant, and vests 33% on each subsequent anniversary until fully vested, subject to continuing service by Mr. Vreeland. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (17)
    This option, granted under our 2006 Plan, will vest as to 34% on the first anniversary of November 16, 2015, the date of grant, and vests 33% on each subsequent anniversary until fully vested, subject to continuing service by Mr. Vreeland. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, this option, if then outstanding, will vest in full on the date that immediately precedes the change in control.

    (18)
    Represents RSUs granted under our 2006 Plan that will vest as to 34% on the first anniversary of November 16, 2015, the date of grant, and vests 33% on each subsequent anniversary until fully vested, subject to continuing service by the named executive officer. The 2006 Plan provides that, in the event of a "change in control" as described in the 2006 Plan, these RSUs will vest in full on the date that immediately precedes the change in control.

    (19)
    Determined
    (6)
    Amount determined by multiplying the unvested stock awards by $3.60,$3.83, the closing price of our common stock on December 31, 2015.the last trading day of 2023.

    (7)
    Represents an option award granted on February 17, 2023.

    51


    Option Exercises and Stock Vested

    The following table provides information regardingsummarizes exercises of option awards and vesting of stock awards byfor each of our named executive officers in 2015:

    2023:
    Option AwardsStock Awards
    NameNumber of
    Shares
    Acquired on
    Exercise
    (#)
    Value Realized
    on Exercise
    ($)
    Number of
    Shares
    Acquired on
    Vesting
    (#)(1)
    Value Realized
    on Vesting
    ($)
    Andrew J. Littlefair60,738336,021
    Robert M. Vreeland33,858187,460
    Mitchell W. Pratt16,92925,901867,342283,426
    Barclay F. Corbus33,858187,460

     
     Option Awards Stock Awards 
     
     Number of
    Shares
    Acquired on
    Exercise
    (#)
     Value Realized
    on Exercise
    ($)
     Number of
    Shares
    Acquired on
    Vesting
    (#)
     Value Realized
    on Vesting
    ($)
     

    Andrew J. Littlefair

      275,000(1) 1,108,600(2)    

          15,126  75,176(3)

    Robert M. Vreeland

             

    Mitchell W. Pratt

      180,000(4) 685,650(5)    

    Peter J. Grace

             

    Barclay F. Corbus

             

    (1)
    The Company withheld
    Includes an aggregateaward of 196,409 of such shares833,334 profit interest units to pay forMr. Pratt under the exercise price of the stock options and the associated tax withholding obligations.

    (2)
    Determined by adding (a) 115,000 shares of common stock acquired upon exercise of a stock option, multiplied by the difference between $4.60, the closing price of our common stock on February 2, 2015, the date of exercise, and the exercise price per share of $2.96, (b) 100,000 shares of common stock acquired upon exercise of a stock option, multiplied by the difference between $8.71, the closing price of our common stock on April 28, 2015, the date of exercise, and the exercise price per share of $2.96, and (c) 60,000 shares of our common stock acquired upon exercise of a stock option, multiplied by the difference between $8.71, the closing price of our common stock on April 28, 2015, the date of exercise, and the exercise price per share of $2.96.

    (3)
    Determined by multiplying the number of shares vested by $4.97, the closing price of our common stock on September 17, 2015, the vesting date of such shares. The Company withheld an aggregate of 7,893 of such sharesCLNE PlasmaFlow Holdings, LLC 2023 Equity Incentive Plan, in connection with his transition to pay for the associated tax withholding obligations.

    (4)
    The Company withheld an aggregate of 122,859 of such shares to pay for the exercise price of the stock options and the associated tax withholding obligations.

    (5)
    Determined by adding (a) 85,000 shares of common stock acquired upon exercise of a stock option, multiplied by the difference between $4.60, the closing price of our common stock on February 2, 2015, the date of exercise, and the exercise price per share of $2.96, (b) 70,000 shares of common stock acquired upon exercise of a stock option, multiplied by the difference between $8.71, the closing price of our common stock on April 28, 2015, the date of exercise, and the exercise price per share of $2.96, and (c) 25,000 shares of our common stock acquired upon exercise of a stock option, multiplied by the difference between $8.71, the closing price of our common stock on April 28, 2015, the date of exercise, and the exercise price per share of $2.96.
    Chief Technology Development Officer.

    Employment Agreements

    On December 31, 2015, we entered into an Employment Agreementemployment agreement with each of our named executive officers. See the description under "Compensation“Compensation Discussion and Analysis—AmendedAnalysis — Employment Agreements” and Restated Employment Agreements." For our 2015 fiscal year,below under “Potential Payments Upon Termination or Change in Control” for more information. In connection with Mr. Pratt’s transition from Chief Operating Officer to Chief Technology Development Officer, we entered into an amended employment agreement with Mr. Pratt on May 17, 2023. Mr. Pratt’s amended employment agreement has a two-year term that automatically renews for successive one-year periods unless earlier terminated in accordance with the provisions therein, provides Mr. Pratt with a $550,000 annual base salary, and non-incentive plan cash bonuses, of which there were none, constituted approximately 32%, 37%, 31%, 36% and 31% of the total compensation of Messrs. Littlefair, Vreeland, Pratt, Grace and Corbus, respectively.

    is otherwise consistent in all material respects with Mr. Pratt’s previous employment agreement.

    Pension Benefits, Non-Qualified Defined Contribution and Other Deferred Compensation Plans

    We do not have any tax-qualified defined benefit plans or supplemental executive retirementdefined-benefit plans that provide for payments or other benefits to our named executive officers at, following or in connection with their retirement. We also do not have any non-qualified defined contribution plans or other deferred compensation plans that provide for the deferral of compensation on a basis that is not tax-qualified.

    Potential Payments Upon Termination or Change in Control

    The tablesnarrative and narrativetables below describe the amount of compensation to be paid to our named executive officers in the event of a termination of employment or a change in control. The amount of compensation payable to each of our named executive officers upon a voluntary termination, voluntary termination for good reason, involuntary not-for-causewithout cause termination, failure by us to renew the named executive officer'sofficer’s employment agreement upon its expiration, for causefor-cause termination, a change in control of our Company, termination in connection with a change in control and in the event oftermination due to disability or death of our named executive officers is shown in tabular format. TheExcept as otherwise noted, the amounts shown in thethese tables assume that each such termination or change in control was effective as of December 31, 2015,2023, and thus are estimates of the amounts that would be paid out to our named executive officers upon theiran actual termination as actualor change in control because such amounts that would be paid out could only be determined at the time of a named executive officer's separation with our Company, andsuch an actual termination or change in control. The amounts shown in these tables are based on the terms of each named executive officer's Employment Agreementofficer’s employment agreement with us which were entered into on such date.

    and the terms of agreements relating to each named executive officer’s outstanding equity awards.


    52


    Severance PaymentsCompensation under Employment Agreements

    Pursuant to the terms of the Employment Agreement, ifemployment agreement for each named executive officer:

    If we terminate a named executive officer without "cause" (as“cause” ​(as such term is defined in the Employment Agreements)employment agreement), if a named executive officer resigns for "good reason" (as“good reason” ​(as such term is defined in the Employment Agreements)employment agreement) or if we do not renew an Employment Agreement prior tothe employment agreement before expiration of the term or any renewal term, then the named executive officer would be entitled to (1) a lump-sum payment of an amount equal to the sum of (A) his annual base salary earned through the date of termination and any annual cash bonusincentive earned for the prior year to the extent not previously paid, (B) any compensation previously deferred by the named executive officer (together with any accrued interest or earnings thereon), (C) 150% of one year'syear’s then-current annual base salary, (D) 150% of his previous year'syear’s annual cash bonusincentive actually earned under our performance-based cash bonusincentive plan, and (E) any vacation pay accrued and not paid as of the date of termination,termination; (2) after the end of the calendar year in which the termination occurs, a lump-sum payment of an amount equal to the annual cash bonusincentive that would be payable to the named executive officer under our performance-based cash bonusincentive plan in respect of such year (based on the criteria applicable for that year) without any pro-rating,pro-rating; and (3) continuing participation, at our expense, for a period of one year from the date of termination in the benefit programs in which the named executive officer was enrolled at the time of termination. In addition, if

    If we terminate aany named executive officer'sofficer’s employment without cause or do not renew an Employment Agreementhis employment agreement within six months prior tobefore or one year after the date of a "change“change in control"control” (as such term is defined in the Employment Agreements)employment agreement), or if a named executive officer resigns for good reason within six months prior tobefore or one year after the date of the change in control, then the named executive officer would be entitled to the severance benefitscompensation described above, except that the lump-sum payment described in (1) above for all named executive officers except Mr. Littlefair shallwould consist of 225% of his then-current annual base salary, 225% of his previous year'syear’s annual cash bonusincentive actually earned under our performance-based cash bonusincentive plan, and the amounts described in (A), (B) and (E); and the lump-sum payment described in (1) above for Mr. Littlefair shallwould consist of 300% of his then-current annual base salary, 300% of his previous year'syear’s annual cash bonusincentive actually earned under our performance-based cash bonusincentive plan, and the amounts described in (A), (B) and (E). Additionally, if a

    If any named executive officer ceases to be an


    employee due to death or disability, then the named executive officer would be entitled to the amounts described in (1)(A),(B) and (E) and (2) above, except that the amount described in (2) above would be pro-rated based on the number of weeks during the last fiscal year during which the named executive officer was an employee. Further, if


    If, at any time that our common stock is not listed or quoted on a national securities exchange or an over-the-counter quotation system, (i) the employment of either of Messrs. Littlefair or Pratt is terminated for cause, we arewould be entitled, at our option, to repurchase all or a portion of our stock owned by him, and if hisor (ii) the employment of either of these named executive officers is terminated due to death or disability, then we arewould be required to repurchase all of our stock owned by him (the tables below assume that we do not repurchase any stock owned by Messrs. Littlefair or Pratt upon a for cause termination). him.
    In consideration of the receipt of any of the severance benefits under an Employment Agreementcompensation described above and as a precondition to their receipt, aeach named executive officer mustwould be required to execute and deliver, and not revoke, a release in favor of us in the form attached to the Employment Agreements.his employment agreement. For purposes of the tables below, such tables assume for all purposeswe have assumed that the amounts described in (1)(A) and (B) above have already been paid to the applicable named executive officer or are $0.

    For purposes of the Employment Agreements,each such named executive officer’s employment agreement:

    “Cause” means (1) "cause" means (A) the named executive officer committing a material act of dishonesty against us, (B)(2) the named executive officer being convicted of a felony involving moral turpitude or (C)(3) the named executive officer committing a material breach of his confidentiality, trade secret, non-solicitation or invention assignment obligations under his Employment Agreement; (2) "good reason"employment agreement.

    “Good reason” means athe named executive officer resigningresigns from his employment after we (A)(1) have materially diminished the named executive officer'sofficer’s duties, authority, responsibility, annual base salary

    53


    or annual incentive compensation opportunity, (B)(2) materially breach the Employment Agreement; (C)employment agreement; (3) change the person to whom the named executive officer reports, or (D)(4) change the location of the named executive officer'sofficer’s principal place of employment; and (3) "changeemployment.

    “Change in control"control” means (A)(1) any "person" (as“person” ​(as defined or referred to in Section 3(a)(9) and/or 13(d)(1), et seq. of the Exchange Act and the associated rules of the SEC promulgated thereunder), other than an existing stockholder of the Company as of January 1, 2006, is or becomes the "beneficial owner" (as“beneficial owner” ​(as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company representing 40% or more of the combined voting power of our then-outstanding securities, or (B)(2) a merger or consolidation of the Company in which its voting securities immediately prior tobefore the merger or consolidation do not represent, or are not converted into securities that represent, a majority of the combined voting power of all voting securities of the surviving entity immediately after the merger or consolidation, or (C)(3) a sale, lease, exchange or other transfer (in one transaction or a series of related transactions) of all or substantially all of the assets of the Company or a liquidation or dissolution of the Company, or (D)(4) individuals who, as of the date of the Employment Agreement,employment agreement, constitute the Company'sCompany’s board of directors (the "Incumbent Board"“Incumbent Board”) cease for any reason to constitute at least a majority of the Company'sCompany’s board of directors; provided that, other than in connection with an actual or threatened proxy contest, any individual who becomes a director subsequent to the date of the Employment Agreement andemployment agreement whose election, or nomination for election by the stockholders of the Company, was approved by the vote of at least a majority of the directors then in office shall be deemed a member of the Incumbent Board.

    Vesting of PVUs

    Options and RSUs

    The PVUs held byterms of the option awards granted to our named executive officers provide that all unvested options will be forfeited if the named executive officers are subject to the following provisions regarding changes in the employment status of a PVU holder: (i) the PVU award will be forfeited in full if the holder'sofficer’s employment with the Company is terminated for cause (as defined in the holder'shis employment agreement) or voluntarily by the holder prior to the fourth anniversary of the PVU's grantnamed executive officer before their applicable vesting date, ("Termination Date"); (ii)that all unvested options will vest in full if the holder'snamed executive officer’s employment is terminated by the Company without cause (as defined in the holder'shis employment agreement), and the Stock Price Hurdle is subsequently satisfied prior to the Termination Date, the Time-Vested Percentage of the PVUsthat all vested options will vest on the date the Stock Price Hurdle is satisfied; (iii) if the holder ceasesgenerally continue to be an employee due to death or disability, the Time-Vested Percentage of the PVUs will immediately vest; and (iv) if the Company experiences a


    "change in control," as defined in the 2006 Plan, prior to the Termination Date, 100% of the PVUs will vest if the per share consideration received by holders of common stock in connection with such change in control equals or exceeds the Stock Price Hurdle. For purposes of the PVUs, "Time-Vested Percentage" means (a) the quotient of (i) the number of fullexercisable for three months that have elapsed from the PVU's grant date up toafter the date of the holder's termination of service, divided by (ii) forty-eight, multiplied by (b) one hundred, provided that the Time-Vested Percentage shall never exceed one hundred. In light of the closing price of our common stock on December 31, 2015, the tables below assume that, had a change in control occurred as ofany such date, the per share consideration received by holders of our common stock in connection with such change in control would not have exceeded the Stock Price Hurdle for the 2012 PVUs or the 2014 PVUs, which is $20.40 and $16.11, respectively.

    Vesting of Option and RSU Awards

    termination. The terms of the RSU awards granted to our named executive officers provide that all unvested RSUs will be forfeited if the named executive officer'sofficer’s employment with the Company is terminated by the Company for cause (as defined in his Employment Agreement) or voluntarily by the named executive officer prior tobefore their applicable vesting date, and that all unvested RSUs will vest in full if the named executive officer'sofficer’s employment is terminated by the Company without cause (as defined in his Employment Agreement) or if the named executive officer ceases to be an employee due to death or disability prior tobefore their applicable vesting date.

            Further, if

    If the Company experiences a "change“change in control," as defined in the 20062016 Plan, then (i) each such named executive officer'sofficer’s option and RSU awards granted before November 2014 that are outstanding on the date that immediately precedes the change in control will immediately vest in full and, if applicable, become fully exercisable on that date, and (ii) each named executive officer's option and RSU awards granted after November 2014 that are outstanding on the date that immediately precedes the change in control will (a)(A) if such awards are not assumed or replaced by the successor company in the change in control, immediately vest in full and, if applicable, become fully exercisable on thatthe date of the change in control, or (b)(B) if such awards are assumed or replaced by the successor company in the change in control but the named executive officer'sofficer’s employment is terminated by the successor company without cause or by the named executive officer for good reason within 12 months following the change in control (based on the definitions of “cause” and “good reason” in his employment agreement with us), immediately vest in full and, if applicable, become fully exercisable on the date of such termination.
    For purposes of the tables below, (i) no amounts are shown for the vesting“spread” value (i.e., the excess of outstanding option awards because all unvested options as of December 31, 2015 had exercise prices that exceeded $3.60$3.83 per share, which was the closing price of our common stock on December 31, 2015 and (ii) it29, 2023, over the applicable option exercise price) of unvested option awards that were “in the money” on December 29, 2023 is assumed that outstanding awards are assumed or replaced by the suceessor company in connection with a change in control.

    presented.


    54


    Potential Payments to Each Named Executive Officer
    Andrew J. Littlefair

    The following table shows the potential cash payments upon termination and/or a change in control of the Company forother benefits to be provided to our President and Chief Executive Officer, Andrew J. Littlefair.

    Benefit and Payments
     Voluntary
    Termination
     Voluntary
    Termination
    for Good
    Reason
     Involuntary
    Without
    Cause
    Termination
     Failure to
    Renew
    Employment
    Agreement
     For Cause
    Termination
     Change
    in
    Control
     Voluntary
    Termination
    for Good
    Reason in
    connection
    with a
    Change in
    Control
     Involuntary
    Without
    Cause
    Termination
    in
    connection
    with a
    Change in
    Control
     Termination
    Due to
    Disability
     Termination
    Due to
    Death
     

    Cash Severance Payment

     $0 $2,568,807 $2,568,807 $2,568,807 $0 $0 $4,676,895 $4,676,895 $0 $0 

    Continuation of Medical/Welfare Benefits (present value)

     $0 $18,340 $18,340 $18,340 $0 $0 $18,340 $18,340 $0 $0 

    Vacation Pay

     $80,863 $80,863 $80,863 $80,863 $80,863 $80,863 $80,863 $80,863 $80,863 $80,863 

    Repurchase of Common Stock(1)

     $0 $0 $0 $0 $0 $0 $0 $0 $2,186,125 $2,186,125 

    PVU Vesting(2)

     $0 $0 $0 $0 $0 $0 $0 $0 $1,569,384 $1,569,384 

    RSU Vesting(3)

     $0 $0 $378,454 $378,454 $0 $54,454 $378,454 $378,454 $378,454 $378,454 

    Total:

     $80,863 $2,668,010 $3,046,464 $3,046,464 $80,863 $135,317 $5,154,552 $5,154,552 $4,214,826 $4,214,826 

    (1)
    AssumesLittlefair, if a fair market valuetermination and/or a change in control had occurred as of $3.60 per share, the closing price of our common stock on December 31, 2015.2023:
    Benefit and PaymentsVoluntary
    Termination
    Voluntary
    Termination
    for Good
    Reason
    Involuntary
    Not For
    Cause
    Termination
    Failure to
    Renew
    Employment
    Agreement
    For Cause
    Termination
    Change in
    Control
    Termination(3)
    Termination
    Due to
    Death or
    Disability
    Cash Severance Payment$2,084,321$2,084,321$2,084,321$3,685,830
    Continuation of Medical/Welfare Benefits (present value)$26,745$26,745$26,745$26,745
    Vacation Pay$80,863$80,863$80,863$80,863$80,863$80,863$80,863
    RSU Vesting(1)$154,701$154,701$154,701$154,701
    Option Vesting(2)$$$$
    Total:$80,863$2,191,929$2,346,630$2,346,630$80,863$3,948,139$235,564
    (1)
    At December 31, 2023, Mr. Littlefair held 607,257 shares of common stock on December 31, 2015.

    (2)
    At December 31, 2015, the Time-Vested Percentage of the 2012 PVUs was 100%, or 400,000 shares, and the Time-Vested Percentage of the 2014 PVUs was 47.92%, or 35,940 shares.40,392 RSUs that had not vested. The amounts in this row were determined by multiplying the 400,000 shares and the 35,940 sharesunvested RSUs by $3.60,$3.83, the closing price of our common stock on December 31, 2015.

    (3)
    29, 2023.
    (2)
    At December 31, 2015,2023, Mr. Littlefair held 105,126 RSUs that had not vested,no unvested options and have an exercise price less than $3.83, the closing price of which 15,126 were granted before November 2014.our common stock on December 29, 2023. The amounts in this row were determined by multiplying the RSUstotal number of unvested shares underlying the options by $3.60, the closingexcess of $3.83 over the exercise price of our common stockfor such options.
    (3)
    Executive change in control severance is based on December 31, 2015.a double-trigger, requiring both a change in control event and either i) a voluntary termination with Good Reason or ii) an involuntary termination without Cause.

    Robert M. Vreeland

    The following table shows the potential cash payments uponor other benefits to be provided to our Chief Financial Officer, Robert M. Vreeland, if a termination and/or a change in control had occurred as of the Company for our Chief Financial Officer, Robert M. Vreeland.

    Benefit and Payments
     Voluntary
    Termination
     Voluntary
    Termination
    for Good
    Reason
     Involuntary
    Without
    Cause
    Termination
     Failure to
    Renew
    Employment
    Agreement
     For Cause
    Termination
     Change
    in
    Control
     Voluntary
    Termination
    for Good
    Reason in
    connection
    with a
    Change in
    Control
     Involuntary
    Without
    Cause
    Termination
    in
    connection
    with a
    Change in
    Control
     Termination
    Due to
    Disability
     Termination
    Due to
    Death
     

    Cash Severance Payment

     $0 $669,698 $669,698 $669,698 $0 $0 $933,089 $933,089 $0 $0 

    Continuation of Medical/Welfare Benefits (present value)

     $0 $5,692 $5,692 $5,692 $0 $0 $5,692 $5,692 $0 $0 

    Vacation Pay

     $17,684 $17,684 $17,684 $17,684 $17,684 $17,684 $17,684 $17,684 $17,684 $17,684 

    RSU Vesting(1)

     $0 $0 $108,000 $108,000 $0 $0 $108,000 $108,000 $108,000 $108,000 

    Total:

     $17,684 $693,074 $801,074 $801,074 $17,684 $17,684 $1,064,465 $1,064,465 $125,684 $125,684 
    December 31, 2023:

    Benefit and PaymentsVoluntary
    Termination
    Voluntary
    Termination
    for Good
    Reason
    Involuntary
    Not For
    Cause
    Termination
    Failure to
    Renew
    Employment
    Agreement
    For Cause
    Termination
    Change in
    Control
    Termination(3)
    Termination
    Due to
    Death or
    Disability
    Cash Severance Payment$1,104,105$1,104,105$1,104,105$1,558,362
    Continuation of Medical/Welfare Benefits (present value)$15,177$15,177$15,177$15,177
    Vacation Pay$44,094$44,094$44,094$44,094$44,094$44,094$44,094
    RSU Vesting(1)$86,451$86,451$86,451$86,451
    Option Vesting(2)$$$$
    Total:$44,094$1,163,376$1,249,827$1,249,827$44,094$1,704,084$130,545
    (1)

    At December 31, 2015,2023, Mr. Vreeland held 30,00022,572 RSUs that had not vested, all which were granted after November 2014.vested. The amounts in this row were determined by multiplying the unvested RSUs by $3.60,$3.83, the closing price of our common stock on December 29, 2023.
    (2)
    At December 31, 2015.

    Mitchell W. Pratt

            The following table shows the potential cash payments upon termination and/or a change in control of the Company for our Chief Operating Officer2023, Mr. Vreeland held no unvested options and Secretary, Mitchell W. Pratt.

    Benefit and Payments
     Voluntary
    Termination
     Voluntary
    Termination
    for Good
    Reason
     Involuntary
    Without
    Cause
    Termination
     Failure to
    Renew
    Employment
    Agreement
     For Cause
    Termination
     Change
    in
    Control
     Voluntary
    Termination
    for Good
    Reason in
    connection
    with a
    Change in
    Control
     Involuntary
    Without
    Cause
    Termination
    in
    connection
    with a
    Change in
    Control
     Termination
    Due to
    Disability
     Termination
    Due to
    Death
     

    Cash Severance Payment

     $0 $1,329,824 $1,329,824 $1,329,824 $0 $0 $1,896,477 $1,896,477 $0 $0 

    Continuation of Medical/Welfare Benefits (present value)

     $0 $14,625 $14,625 $14,625 $0 $0 $14,625 $14,625 $0 $0 

    Vacation Pay

     $55,531 $55,531 $55,531 $55,531 $55,531 $55,531 $55,531 $55,531 $55,531 $55,531 

    Repurchase of Common Stock(1)

     $0 $0 $0 $0 $0 $0 $0 $0 $644,393 $644,393 

    PVU Vesting(2)

     $0 $0 $0 $0 $0 $0 $0 $0 $855,943 $855,943 

    RSU Vesting(3)

     $0 $0 $288,000 $288,000 $0 $0 $288,000 $288,000 $288,000 $288,000 

    Total:

     $55,531 $1,399,980 $1,687,980 $1,687,980 $55,531 $55,531 $2,254,633 $2,254,633 $1,843,867 $1,843,867 

    (1)
    Assumes a fair market value of $3.60 per share,have an exercise price less than $3.83, the closing price of our common stock on December 31, 2015. Mr. Pratt held 178,998 shares of common stock on December 31, 2015.

    (2)
    At December 31, 2015, the Time-Vested Percentage of the 2012 PVUs was 100%, or 215,000 shares, and the Time-Vested Percentage of the 2014 PVUs was 47.92%, or 22,762 shares.29, 2022. The amounts in this row were determined by multiplying the 215,000total number of unvested shares underlying the options by the excess of $3.83 over the exercise price for such options.
    (3)
    Executive change in control severance is based on a double-trigger, requiring both a change in control event and either i) a voluntary termination with Good Reason or ii) an involuntary termination without Cause.

    55


    Mitchell W. Pratt
    The following table shows the 22,762 shares by $3.60, the closing pricepotential cash payments or other benefits to be provided to our Chief Technology Development Officer, Mitchell W. Pratt, if a termination and/or a change in control had occurred as of our common stock on December 31, 2015.

    (3)
    2023:
    Benefit and PaymentsVoluntary
    Termination
    Voluntary
    Termination
    for Good
    Reason
    Involuntary
    Not For
    Cause
    Termination
    Failure to
    Renew
    Employment
    Agreement
    For Cause
    Termination
    Change in
    Control
    Termination(3)
    Termination
    Due to
    Death or
    Disability
    Cash Severance Payment$1,287,719$1,287,719$1,287,719$1,816,093
    Continuation of Medical/Welfare Benefits (present value)$26,745$26,745$26,745$26,745
    Vacation Pay$63,462$63,342$63,342$63,342$63,462$63,642$63,642
    RSU Vesting(1)$86,451$86,451$86,451$86,451
    Option Vesting(2)$$$$
    Total:$63,462$1,337,926$1,464,377$1,464,377$63,462$1,992,751$149,913
    (1)
    At December 31, 2015,2023, Mr. Pratt held 80,00022,572 RSUs that had not vested, all which were granted after November 2014.vested. The amounts in this row were determined by multiplying the unvested RSUs by $3.60,$3.83, the closing price of our common stock on December 31, 2015.

      Peter J. Grace

            The following table shows the potential cash payments upon termination and/or a change in control of the Company for our Senior Vice President, Sales and Finance, Peter J. Grace.

    Benefit and Payments
     Voluntary
    Termination
     Voluntary
    Termination
    for Good
    Reason
     Involuntary
    Without
    Cause
    Termination
     Failure to
    Renew
    Employment
    Agreement
     For Cause
    Termination
     Change
    in
    Control
     Voluntary
    Termination
    for Good
    Reason in
    connection
    with a
    Change in
    Control
     Involuntary
    Without
    Cause
    Termination
    in
    connection
    with a
    Change in
    Control
     Termination
    Due to
    Disability
     Termination
    Due to
    Death
     

    Cash Severance Payment

     $0 $1,442,940 $1,442,940 $1,442,940 $0 $0 $2,090,808 $2,090,808 $0 $0 

    Continuation of Medical/Welfare Benefits (present value)

     $0 $16,470 $16,470 $16,470 $0 $0 $16,470 $16,470 $0 $0 

    Vacation Pay

     $41,597 $41,597 $41,597 $41,597 $41,597 $41,597 $41,597 $41,597 $41,597 $41,597 

    PVU Vesting(1)

     $0 $0 $0 $0 $0 $0 $0 $0 $454,223 $454,223 

    RSU Vesting(2)

     $0 $0 $144,000 $144,000 $0 $0 $144,000 $144,000 $144,000 $144,000 

    Total:

     $41,597 $1,501,007 $1,645,007 $1,645,007 $41,597 $41,597 $2,292,875 $2,292,875 $639,820 $639,820 

    29, 2023.
    (1)
    (2)
    At December 31, 2015,2023, Mr. Pratt held zero options that had not vested and have an exercise price less than $3.83, the Time-Vested Percentageclosing price of the 2012 PVUs was 100%, or 110,000 shares, and the Time-Vested Percentage of the 2014 PVUs was 47.92%, or 16,173 shares.our common stock on December 29, 2023. The amounts in this row were determined by multiplying the 110,000total number of unvested shares underlying the options by the excess of $3.83 over the exercise price for such options.
    (3)
    Executive change in control severance is based on a double-trigger, requiring both a change in control event and either i) a voluntary termination with Good Reason or ii) an involuntary termination without Cause.
    Barclay F. Corbus
    The following table shows the 16,173 shares by $3.60, the closing pricepotential cash payments or other benefits to be provided to our Senior Vice President, Strategic Development and Head of our common stock onRenewable Fuels, Barclay F. Corbus, if a termination and/or a change in control had occurred as of December 31, 2015.

    (2)
    2023:
    Benefit and PaymentsVoluntary
    Termination
    Voluntary
    Termination
    for Good
    Reason
    Involuntary
    Not For
    Cause
    Termination
    Failure to
    Renew
    Employment
    Agreement
    For Cause
    Termination
    Change in
    Control
    Termination(3)
    Termination
    Due to
    Death or
    Disability
    Cash Severance Payment$1,182,083$1,182,083$1,182,083$1,668,137
    Continuation of Medical/Welfare Benefits (present value)$34,260$34,260$34,260$34,260
    Vacation Pay$57,692$57,692$57,692$57,692$57,692$57,692$57,692
    RSU Vesting(1)$86,451$86,451$86,451$86,451
    Option Vesting(2)$$$$
    Total:$57,692$1,274,035$1,360,486$1,360,486$55,256$1,846,540$144,143
    (1)
    At December 31, 2015,2023, Mr. GraceCorbus held 40,00022,572 RSUs that had not vested, all which were granted after November 2014.vested. The amounts in this row were determined by multiplying the unvested RSUs by $3.60,$3.83, the closing price of our common stock on December 31, 2015.29, 2023.

    Barclay F. Corbus

            The following table shows the potential cash payments upon termination and/or a change in control of the Company for our Senior Vice President of Strategic Development, Barclay F. Corbus.

    Benefit and Payments
     Voluntary
    Termination
     Voluntary
    Termination
    for Good
    Reason
     Involuntary
    Without
    Cause
    Termination
     Failure to
    Renew
    Employment
    Agreement
     For Cause
    Termination
     Change in
    Control
     Voluntary
    Termination
    for Good
    Reason in
    connection
    with a
    Change in
    Control
     Involuntary
    Without
    Cause
    Termination
    in connection
    with a
    Change in
    Control
     Termination
    Due to
    Disability
     Termination
    Due to
    Death
     

    Cash Severance Payment

     $0 $1,225,230 $1,225,230 $1,225,230 $0 $0 $1,747,314 $1,747,314 $0 $0 

    Continuation of Medical/Welfare Benefits (present value)

     $0 $18,340 $18,340 $18,340 $0 $0 $18,340 $18,340 $0 $0 

    Vacation Pay

     $51,163 $51,163 $51,163 $51,163 $51,163 $51,163 $51,163 $51,163 $51,163 $51,163 

    PVU Vesting(1)

     $0 $0 $0 $0 $0 $0 $0 $0 $784,692 $784,692 

    RSU Vesting(2)

     $0 $0 $230,400 $230,400 $0 $0 $230,400 $230,400 $230,400 $230,400 

    Total:

     $51,163 $1,294,733 $1,525,133 $1,525,133 $51,163 $51,163 $2,047,217 $2,047,217 $1,066,255 $1,066,255 

    (1)
    (2)
    At December 31, 2015,2023, Mr. Corbus held no unvested options and have an exercise price less than $3.83, the Time-Vested Percentageclosing price of the 2012 PVUs was 100%, or 200,000 shares, and the Time-Vested Percentage of the 2014 PVUs was 47.92%, or 17,970 shares.our common stock on December 29, 2023. The amounts in this row were determined by multiplying the 200,000total number of unvested shares underlying the options by the excess of $3.83 over the exercise price for such options.
    (3)
    Executive change in control severance is based on a double-trigger, requiring both a change in control event and either i) a voluntary termination with Good Reason or ii) an involuntary termination without Cause.

    56


    Pay Ratio
    We are required by applicable SEC rules to disclose the annual total compensation of our Chief Executive Officer, the median annual total compensation of all of our other employees, and the 17,970 shares by $3.60,ratio of these two amounts.
    In determining the closing pricemedian annual total compensation of our common stock onemployees other than our Chief Executive Officer, we started by preparing a list of all such employees as of December 31, 2015.

    (2)
    At2023 and each such employee’s taxable earnings for 2023 as reflected in our payroll records, which generally consists of salary; regular, hourly, and overtime wages; commissions; incentives and other miscellaneous earnings. This list includes all our employees on such date (except solely for our Chief Executive Officer), whether employed on a full-time, part-time, seasonal or temporary basis and wherever located, resulting in 559 employees who are all located in the United States and Canada. For any such employees who are permanently employed (in other words, who are not employed on a seasonal or temporary basis) and who joined the Company after January 1, 2023, this list reflects 2023 taxable earnings on an annualized basis. We then ordered the employees in this list based on the amounts of their 2023 taxable earnings, selected the single employee at the midpoint of the re-ordered list, and calculated the amount of this single midpoint employee’s annual total compensation using the methodology required by SEC rules for calculating the total compensation of our named executive officers as reported in the Summary Compensation Table above. The annual total compensation for our median employee was $105,469, and the annual total compensation for our Chief Executive Officer was $1,977,858. We estimate the ratio of the annual total compensation of our Chief Executive Officer to the median annual total compensation of all our other employees is 19 to 1.
    We believe this pay ratio is a reasonable estimate calculated in a manner consistent with applicable SEC rules. In light of the many different methodologies, exclusions, estimates and assumptions companies are permitted to use in determining an estimate of their respective pay ratios, as well as the differing employment and compensation practices and industry standards that impact these ratios, our estimated pay ratio information may not be comparable to the pay ratio information reported by other companies, and we discourage the use of this information as a basis for comparison between companies. Neither our compensation committee nor our management used our pay ratio information in making compensation decisions for 2023 or 2024.
    Pay Versus Performance
    Under rules adopted pursuant to the Dodd-Frank Act, we are required to disclose certain information about the relationship between the compensation actually paid to our named executive officers and certain measures of company performance. The material that follows is provided in compliance with these rules; however, additional information regarding our compensation philosophy, the structure of our performance-based compensation programs, and compensation decisions made this year is described above in our “Compensation Discussion and Analysis.”
    The following table provides information regarding compensation actually paid to our principal executive officer, or PEO, and other NEOs for each year from 2020 to 2023, compared to our total stockholder return (“TSR”) from December 31, 2015, 2019 through the end of each such year, and our Net Income, and Adjusted EBITDA for each such year.
    YearSummary
    Compensation
    Table Total
    for CEO(1)
    Compensation
    Actually
    Paid to
    CEO(2)
    Average
    Summary
    Compensation
    Table Total
    for Other
    NEOs(3)
    Average
    Compensation
    Actually
    Paid for
    Other
    NEOs(2)(3)
    Value of
    initial fixed
    $100 investment
    based on(4):
    Net Income
    (loss) ($)
    (in thousands)
    Economic
    Adjusted
    EBITDA ($)(6)
    (in thousands)
    TSRPeer Group
    TSR
    2023$1,977,858$21,562$1,379,125$435,876$222.67$150.31$(99,497)$43,571
    2022$1,125,510$297,609$650,073$278,924$256.16$114.70$(58,733)$50,003
    2021$10,811,193$9,710,227$5,208,251$4,623,456$301.97$146.23$(93,146)$57,032
    2020$1,826,353$4,056,472$951,260$2,120,126$387.19$128.61$(9,864)$45,134

    57


    (1)
    Mr. Corbus held 64,000 RSUs that hadLittlefair was the CEO for each of 2020, 2021, 2022 and 2023.
    (2)
    SEC rules require certain adjustments be made to the Summary Compensation Table totals to determine “compensation actually paid” as reported in the Pay versus Performance Table. “Compensation actually paid” does not vested, allnecessarily represent cash and/or equity value transferred to the applicable NEO without restriction, but rather is a value calculated under applicable SEC rules. In general, “compensation actually paid” is calculated as Summary Compensation Table total compensation adjusted to include the fair market value of equity awards as of December 31 of the applicable year or, if earlier, the vesting date (rather than the grant date). NEOs do not participate in a defined benefit plan so no adjustment for pension benefits is included in the table below. Similarly, no adjustment is made for dividends as dividends are factored into the fair value of the award. Finally, there were no equity awards which were granted after November 2014.and vested in the same year, other than the award of profits interest granted to Mr. Pratt in 2023 under the CLNE PlasmaFlow Holdings, LLC 2023 Equity Incentive Plan. The amounts in this rowfollowing table details these adjustments:
    YearExecutive(s)Summary
    Compensation
    Table Total
    Subtract
    Stock
    Awards ($)
    Add
    Year-End
    Equity
    Value ($)
    Add
    Change in
    Value of Prior
    Unvested
    Equity
    Awards ($)
    Add Value
    of Equity
    Awards
    That
    Vested in
    the Year of
    Grant
    Add
    Change in
    Value of
    Vested
    Equity
    Awards ($)
    Subtract
    Value of
    Equity Awards
    that Failed
    to Meet
    Vesting
    Conditions
    Compensation
    Actually
    Paid ($)
    2023CEO$1,977,858$738,750$455,211$(1,604,939)$$(67,818)$21,562
    Other NEOs$1,379,125$655,633$384,401$(661,310)$31,800$(42,507)$435,876
    2022CEO$1,125,510$852$780$(833,791)$$5,962$297,609
    Other NEOs$650,073$284$260$(374,021)$$2,896$278,924
    2021CEO$10,811,193$9,200,924$7,210,210$(239,935)$$1,283,125$153,443$9,710,227
    Other NEOs$5,208,251$4,353,301$3,316,767$(131,158)$$663,205$80,307$4,623,456
    2020CEO$1,826,353$296,208$1,057,074$1,448,260$$53,16532,172$4,056,472
    Other NEOs$951,260$165,528$590,718$741,170$$19,34416,838$2,120,126
    (3)
    For each of 2020, 2021, 2022 and 2023, the other NEOs were Messrs. Vreeland, Pratt, and Corbus.
    (4)
    TSR is determined based on the value of an initial fixed investment of $100. The TSR peer group consists of the Russell 2000 Index.
    (5)
    The most important performance measures used by multiplying the RSUs by $3.60,Company to link executive compensation actually paid to the closing priceCompany’s NEOs, for the most recently completed fiscal year, to the Company’s performance are as follows:

    Adjusted EBITDA (6)

    Volume (in GGEs)

    Volume Margin per GGE

    Volume of RNG
    (6)
    Please see “Calculation of 2023 Adjusted EBITDA” below for more information on how we define Adjusted EBITDA.

    58


    Relationship Between “Compensation Actually Paid” and Performance Measures
    The charts below show, for the past four years, the relationship of the Company’s TSR relative to its peers as well as the relationship between the CEO and non-CEO “compensation actually paid” and (i) the Company’s TSR; (ii) the Company’s net income; and (iii) the Company’s Economic Adjusted EBITDA.
    [MISSING IMAGE: bc_compincome-4c.jpg]
    [MISSING IMAGE: bc_compebitda-4c.jpg]
    [MISSING IMAGE: bc_comppaid-4c.jpg]
    [MISSING IMAGE: bc_comptsr-4c.jpg]
    Risks Related to Compensation Policies and Practices
    The compensation committee regularly monitors and considers whether our overall compensation programs, including our executive compensation program, create incentives for employees to take excessive or unreasonable risks that could materially harm our Company. Although risk-taking is a necessary part of any business, the compensation committee focuses on aligning the Company’s compensation policies with the long-term interests of the Company and its stockholders and avoiding short-term rewards for management decisions that could pose long-term risks to the Company. Although a portion of our commonexecutive compensation plan is performance-based, which could motivate risk-taking, we do not believe our overall compensation structure encourages excessive or unnecessary risk-taking. We believe our approach to goal-setting, the mix of different types of compensation, payouts at multiple levels of performance, evaluation of performance results, and allowance for compensation committee discretion in determining award types, levels and payouts assist in mitigating these risks, as follows:

    Our compensation structure includes a combination of compensation vehicles, including a competitive base salary and benefits generally available to all of our employees, equity awards to incentivize long-term performance and align the interests of our employees with those of our stockholders, annual

    59


    cash incentives to reward executives for achieving Company objectives, and change in control and post-termination severance compensation to encourage retention of our key executives.

    To discourage excessive or unnecessary risk-taking, for 2023, payouts to each named executive officer under our performance-based cash incentive plan were based on seven distinct performance metrics, each with material weighting. Additionally, the compensation committee retains the discretion to increase or decrease payouts under this incentive plan as it deems appropriate.

    To help mitigate risks of overpayment, we maintain a clawback policy that complies with recently adopted SEC and Nasdaq requirements. We also have adopted stock ownership guidelines applicable to all of our named executive officers to ensure they have a meaningful equity stake in the Company.
    We further believe that our internal legal and financial controls appropriately mitigate the probability and potential impact of an individual employee committing our Company to a harmful long-term business transaction in exchange for a short-term compensation benefit.
    Based on December 31, 2015.the factors described above, we believe our 2023 compensation programs do not create risks that are reasonably likely to have a material adverse effect on our Company.

    Overview

    Calculation of Director Compensation

    2023 Adjusted EBITDA

    The following table shows adjusted EBITDA as we defined it for 2023 and reconciles this non-GAAP financial measure to the GAAP measure net income (loss):
    Year Ended
    December 31, 2023
    (in thousands)
    Net loss attributable to Clean Energy Fuels Corp.$(99,497)
    Income tax benefit(423)
    Interest expense22,924
    Interest income(11,148)
    Depreciation and amortization45,674
    Amazon warrant charges60,609
    Stock-based compensation23,336
    Loss (income) from SAFE&CEC S.r.l equity method investment1,700
    Loss (gain) from change in fair value of derivative instruments158
    Depreciation and amortization from RNG equity method investments1,666
    Interest expense from RNG equity method investments992
    Interest income from RNG equity method investments(2,420)
    Adjusted EBITDA$43,571

    60


    DIRECTOR COMPENSATION
    Overview
    We use cash and stock-based incentiveequity compensation to attract and retain qualified candidates to serve on our Board. The amount and type of cash and equity compensation awarded to non-employee directors in 2023 was determined by the compensation committee in its sole discretion. In setting non-employee director compensation we considerfor 2023, the compensation committee considered a variety of factors, including the significant amount of time that our directors spend in fulfilling their duties to our Company, as well as the level of experience and skillsskill required of the members of the Board. We have also awardedFurther, in setting director compensation, our compensation committee considered that a director’s independence may be jeopardized if director compensation and perquisites exceed customary levels, if the Company makes charitable or political contributions to individual non-employee directors in recognitionorganizations with which a director is affiliated or if the Company enters into consulting contracts with (or provides other indirect forms of outstanding servicecompensation to) a director or efforts on the Company's behalf.an organization with which a director is affiliated. Directors who are our employees receive no additional compensation for their services as directors.

    Cash In addition, for 2023 and 2024 each of Mr. Soulas, Mr. Wolffsheim and Ms. Boissy-Rousseau voluntarily waived their right to receive compensation for their services as a director of our Company.

    In November 2022, following consultation with the compensation committee’s independent compensation consultant, Semler Brossy, we adopted our new Directors’ Compensation PaidPolicy, effective January 1, 2023. We adopted our new Directors’ Compensation Policy to Non-Employee Board Members

            We payformalize our director compensation arrangements and director equity award grant practices, and we believe our new policy will facilitate our Board’s mission of attracting and retaining highly skilled directors.

    After reviewing the factors described above and others that it considered relevant, the compensation committee approved the non-employee director compensation program described below. The compensation paid pursuant to the non-employee director compensation program is described below.
    Cash
    For 2023 and 2024, our non-employee directors (other than Mr. Soulas, Mr. Wolffsheim and Ms. Boissy-Rousseau) received (or will receive) the following cash compensationcompensation:
    Type of Retainer or Fee2023 Amounts2024 Amounts
    Annual Cash Retainer$70,000$70,000
    Annual Chairperson Retainer$60,000$60,000
    Annual Audit Committee Chairperson Retainer$15,000$15,000
    Annual Compensation Committee Chairperson Retainer$10,000$10,000
    Annual Nominating and Corporate Governance Committee Chairperson Retainer$5,000$5,000
    Annual Audit Committee Member Retainer$5,000$5,000
    Annual Compensation Committee Member Retainer$4,000$4,000
    Annual Nominating and Corporate Governance Committee Member Retainer$3,000$3,000
    These cash retainers will be paid on a quarterly basis, following the end of each quarter in arrears, and will be pro-rated if a non-employee director serves (or serves in the corresponding position, as the case may be) for only a portion of the quarter.
    Equity
    Pursuant to ourthe Directors’ Compensation Policy, effective January 1, 2023, the non-employee directors:

      Except for Messrs. Mitchelldirectors receive an annual equity award with a value of $120,000, which award shall be fifty percent (50%) in non-statutory stock options (the “Annual Stock Option Award”) and Miller, allfifty percent (50%) in restricted stock units of the Company (collectively with the Annual Stock Option Award, the “Equity Awards”). Equity awards are generally granted to Directors on the date of each Annual Meeting. Subject to the non-employee director’s continued service with the Company, each Equity Award will vest in one installment on the first anniversary

    61


    of the date of grant (or on the date of the following year’s Annual Meeting, if earlier). Each new non-employee director appointed or elected after the date of the Annual Meeting, will automatically be granted pro-rated levels of the annual Equity Awards described above. In addition, each Equity Award will be subject to the terms and conditions of the 2016 Plan and will be evidenced by, and subject to the terms and conditions of, any award agreement in the form approved by the Board to evidence such type of grant pursuant to the Directors’ Compensation Policy.
    Each of our non-employee directors is also reimbursed for reasonable out-of-pocket expenses for attendance at Board and committee meetings.
    Director Stock Ownership Guidelines
    We believe it is important to encourage our directors to hold a material amount of our common stock, which links their long-term economic interest directly to that of our stockholders. To achieve this goal, we have established stock ownership guidelines applicable to our independent directors. These guidelines provide that each independent director is required to own shares of our common stock valued at $180,000 or more by five years after the date of a director’s initial election to the Board. Stock options are paid $60,000 per year.

    In recognitionnot counted toward satisfaction of these stock ownership requirements. Directors who attain this stock ownership level by the stated deadline will continue to satisfy the stock ownership requirements if the value of their stock holdings declines after such deadline solely due to a decrease in the trading price of our common stock. All of our independent directors have satisfied these stock ownership guidelines as of the additional responsibilities of Mr. Miller, Chair of the audit committee, and Mr. Mitchell, Chairman ofRecord Date. In addition, the Board Mr. Miller is paid $70,000 per year and Mr. Mitchell is paid $120,000 per year, except that in February 2015 Mr. Mitchell voluntarily elected to reduce his annual cash compensation to $108,000.

    Stock-Based Incentive Compensation

            From time to time, and typically on an annual basis, we award equity awards to non-employee directors; providedhas determined that the determinationdirector stock ownership guidelines do not apply to Ms. Boissy-Rousseau or Mr. Soulas (nor did they apply to Mr. Wolffsheim during his Board service) for so long as each is designated by TMS to which directorsserve as a director and waives his or her right to receive awards, as well ascompensation for serving on the timing and the amount of any such awards, is discretionary.Board. See the footnotesdescriptions under “Proposal 1: Election of Directors — General” and “Director Compensation” for more information.

    We have also established stock ownership guidelines applicable to the certain of our executive officers, which are described under “Compensation Disclosure and Analysis — Executive Stock Ownership Guidelines” above.
    Director Compensation table below for information about the outstanding stock and option awards held by our directors at December 31, 2015.

    Table

    2015 Director Compensation

    The following table summarizes the compensation we paid to directors who are not employees of our Company for the fiscal year ended December 31, 2015:

    Name(1)
     Fees Earned or
    Paid in Cash
    ($)
     Stock
    Awards(2)
    ($)
     Total
    ($)
     

    Warren I. Mitchell, Chairman(3)

      108,000  100,400  208,400 

    John S. Herrington(4)

      60,000  100,400  160,400 

    James C. Miller III(5)

      70,000  100,400  170,400 

    T. Boone Pickens(6)

      60,000  100,400  160,400 

    Kenneth M. Socha(7)

      60,000  100,400  160,400 

    Vincent C. Taormina(8)

      60,000  100,400  160,400 

    James E. O'Connor(9)

      60,000  100,400  160,400 

    Stephen A. Scully(10)

      60,000  100,400  160,400 
    2023:

    Name(1)Fees Earned or
    Paid in Cash
    ($)
    Stock
    Awards(2)
    ($)
    Option
    Awards(3)
    ($)
    Total
    ($)
    Stephen A. Scully(4)135,00060,00059,999254,999
    Lizabeth Ardisana(5)87,00060,00059,999206,999
    Karine Boissy-Rousseau
    James C. Miller III(6)85,00060,00059,999204,999
    Lorraine Paskett(7)35,00035,000
    Kenneth M. Socha(8)77,00060,00059,999196,999
    Mathieu Soulas
    Vincent C. Taormina(9)80,00060,00059,999199,999
    Parker A. Weil(10)80,00060,00059,999198,999
    Laurent Wolffsheim(11)

    62


    (1)

    Andrew J. Littlefair, our President and Chief Executive Officer, is not included in this table because he is an employee of the Company and thus receives no additional compensation for his services as a director. The compensation received by Mr. Littlefair as an employee of the Company is shown in the Summary Compensation Table above.

    Messrs. Soulas and Wolffsheim and Ms. Boissy-Rousseau each voluntarily waived their right to receive compensation for 2023. In addition, due to clerical errors, the fees paid to Ms. Ardisana and Mr. Socha for Board service in 2023 were $3,000 and $7,000 less than such director earned, respectively. The Company paid Ms. Ardisana and Mr. Socha such amounts in 2024. Mr. Weil was paid $1,000 more in fees for 2023 than provided under the Directors’ Compensation Policy, which the Board determined to treat as earned.
    (2)

    On November 16, 2016,May 18, 2023, each non-employee director (other than Ms. Paskett, Mr. Wolffsheim and Ms. Boissy-Rousseau) received a restricted stock unit award covering 13,129 shares of our non-employee directors was granted ancommon stock (the “2023 Director RSU award.Grants”). Ms. Paskett did not receive a 2023 Director RSU Grant because she resigned from the Board on May 17, 2023. The amounts listedshown in this column reflectrepresent the grant date fair valuesvalue of the 2023 Director RSU Grants calculated in accordance with FASB ASC 718. For a discussion about the valuation models and assumptions used to calculate the fair value of these awards, see Note 13 to the consolidated financial statements included in the Annual Report.
    (3)
    On May 18, 2023, each non-employee director (other than Ms. Paskett, Mr. Wolffsheim and Ms. Boissy-Rousseau) received an option award covering 19,169 shares and having an exercise price equal to $4.57 (the “2023 Director Option Grants”). Ms. Paskett did not receive a 2023 Director Option Grant because she resigned from our board of directors on May 17, 2023. The amounts shown in this column represent the grant date fair value of these option awards calculated in accordance with FASB ASC 718. For a discussion regardingabout the valuation modelmodels and assumptions used to calculate the fair value of these stock awards, see note 11Note 13 to the consolidated financial statements included in the Annual Report.

    (3)
    (4)
    As of December 31, 2015, Mr. Mitchell had fully vested and outstanding options to purchase the following: 72,500 shares at an exercise price of $12.00, 25,000 shares at an exercise price of $15.27, 25,997 shares at an exercise price of $5.09, 19,638 shares at an exercise price of $6.33, 20,000 shares at an exercise price of $14.06, 20,000 shares at an exercise price of $13.49, 20,000 shares at an exercise price of $14.22, 25,000 shares at an exercise price of $15.11, 20,000 shares at an exercise price of $13.09, 20,000 shares at an exercise price of $11.93 and 20,000 shares at an exercise price of $5.54. As of December 31, 2015, Mr. Mitchell had an outstanding unvested RSU award for 20,000 shares.

    (4)
    As of December 31, 2015, Mr. Herrington had fully vested and outstanding options to purchase the following: 80,000 shares at an exercise price of $12.00, 25,000 shares at an exercise price of $15.27, 25,997 shares at an exercise price of $5.09, 19,638 shares at an exercise price of $6.33, 20,000 shares at an exercise price of $14.06, 20,000 shares at an exercise price of $13.49, 20,000 shares at an exercise price of $14.22, 25,000 shares at an exercise price of $15.11, 20,000 shares at an exercise price of $13.09, 20,000 shares at an exercise price of $11.93 and 20,000 shares at an exercise price of $5.54. As of December 31, 2015, Mr. Herrington had an outstanding unvested RSU award for 20,000 shares.

    (5)
    As of December 31, 2015, Mr. Miller had fully vested and outstanding options to purchase the following: 8,250 shares at an exercise price of $15.27, 17,145 shares at an exercise price of $5.09, 12,961 shares at an exercise price of $6.33, 20,000 shares at an exercise price of $14.06, 20,000 shares at an exercise price of $13.49, 20,000 shares at an exercise price of $14.22, 25,000 shares at an exercise price of $15.11, 20,000 shares at an exercise price of $13.09, 20,000 shares at an exercise price of $11.93 and 20,000 shares at

      an exercise price of $5.54. As of December 31, 2015, Mr. Miller had an outstanding unvested RSU award for 20,000 shares.

    (6)
    As of December 31, 2015, Mr. Pickens had fully vested and outstanding options to purchase the following: 113,897 shares at an exercise price of $5.09, 86,103 shares at an exercise price of $6.33, 400,000 shares at an exercise price of $14.06, 20,000 shares at an exercise price of $13.49, 20,000 shares at an exercise price of $14.22, 25,000 shares at an exercise price of $15.11, 20,000 shares at an exercise price of $13.09, 20,000 shares at an exercise price of $11.93 and 20,000 shares at an exercise price of $5.54. As of December 31, 2015, Mr. Pickens had an outstanding unvested RSU award for 20,000 shares.

    (7)
    As of December 31, 2015, Mr. Socha had fully vested and outstanding options to purchase the following: 10,000 shares at an exercise price of $5.09, 19,638 shares at an exercise price of $6.33, 20,000 shares at an exercise price of $14.06, 20,000 shares at an exercise price of $13.49, 20,000 shares at an exercise price of $14.22, 25,000 shares at an exercise price of $15.11, 20,000 shares at an exercise price of $13.09, 20,000 shares at an exercise price of $11.93 and 20,000 shares at an exercise price of $5.54. As of December 31, 2015, Mr. Socha had an outstanding unvested RSU award for 20,000 shares.

    (8)
    As of December 31, 2015, Mr. Taormina had fully vested and outstanding options to purchase the following: 25,000 shares at an exercise price of $14.43, 25,997 shares at an exercise price of $5.09, 19,638 shares at an exercise price of $6.33, 20,000 shares at an exercise price of $14.06, 20,000 shares at an exercise price of $13.49, 20,000 shares at an exercise price of $14.22, 25,000 shares at an exercise price of $15.11, 20,000 shares at an exercise price of $13.09, 20,000 shares at an exercise price of $11.93 and 20,000 shares at an exercise price of $5.54. As of December 31, 2015, Mr. Taormina had an outstanding unvested RSU award for 20,000 shares.

    (9)
    As of December 31, 2015, Mr. O'Connor had fully vested and outstanding options to purchase the following: 25,000 shares at an exercise price of $15.11, 20,000 shares at an exercise price of $13.09, 20,000 shares at an exercise price of $11.93 and 20,000 shares at an exercise price of $5.54. As of December 31, 2015, Mr. O'Connor had an outstanding unvested RSU award for 20,000 shares.

    (10)
    As of December 31, 2015,2023, Mr. Scully had fully vested and outstanding options to purchase the following: 20,000 shares at an exercise price of $11.93 and$11.93; 20,000 shares at an exercise price of $5.54.$5.54; 40,000 shares at an exercise price of $1.37; 42,500 shares at an exercise price of $2.19; 42,000 shares at an exercise price of $2.56; 75,000 shares at an exercise price of $10.18; 86,956 shares at an exercise price of $6.60; and 19,169 outstanding unvested options to purchase shares at an exercise price of $4.57. As of December 31, 2015,2023, Mr. Scully also had an13,129 outstanding unvested RSU award forrestricted stock units.
    (5)
    As of December 31, 2023, Ms. Ardisana had fully vested and outstanding options to purchase the following: 22,000 shares at an exercise price of $2.56; 51,813 shares at an exercise price of $10.18; 86,956 shares at an exercise price of $6.60; and 19,169 outstanding unvested options to purchase shares at an exercise price of $4.57. As of December 31, 2023, Ms. Ardisana also had 13,129 outstanding unvested restricted stock units.
    (6)
    As of December 31, 2023, Mr. Miller had fully vested and outstanding options to purchase the following: 20,000 shares.shares at an exercise price of $11.93; 20,000 shares at an exercise price of $5.54; 42,500 shares at an exercise price of $2.19; 42,000 shares at an exercise price of $2.56; 51,813 shares at an exercise price of $10.18; 86,956 shares at an exercise price of $6.60; and 19,169 outstanding unvested options to purchase shares at an exercise price of $4.57. As of December 31, 2023, Mr. Miller also had 13,129 outstanding unvested restricted stock units.

    Equity Incentive Plans

            The Company currently maintains three equity incentive plans:

    (7)
    As of December 31, 2023, Ms. Paskett had outstanding unvested options to purchase the 2002 Plan,following: 100,000 shares at an exercise price of $6.49. Ms. Paskett resigned from the 2006 PlanBoard effective May 17, 2023, and her unvested options were forfeited as of such date.
    (8)
    As of December 31, 2023, Mr. Socha had fully vested and outstanding options to purchase the ESPP, eachfollowing: 20,000 shares at an exercise price of which is described below. Stockholders are$11.93; 20,000 shares at an exercise price of $5.54; 42,500 shares at an exercise price of $2.19; 42,000 shares at an exercise price of $2.56; 51,813 shares at an exercise price of $10.18; 86,956 shares at an exercise price of $6.60; and 19,169 outstanding unvested options to purchase shares at an exercise price of $4.57. As of December 31, 2023, Mr. Socha also being askedhad 13,129 outstanding unvested restricted stock units.
    (9)
    As of December 31, 2023, Mr. Taormina had fully vested and outstanding options to approve a new equity incentive plan,purchase the 2016 Plan, described under Proposal No. 3 above.

    2002 Stock Option Plan

            Ourfollowing: 20,000 shares at an exercise price of $11.93; 20,000 shares at an exercise price of $5.54; 40,000 shares at an exercise price of $1.37; 42,500 shares at an exercise price of $2.19; 42,000 shares at an exercise price of $2.56; 51,813 shares at an exercise price of $10.18; 86,956 shares at an exercise price of $6.60; and 19,169 outstanding unvested options to purchase shares at an exercise price of $4.57. As of December 31, 2023, Mr. Taormina also had 13,129 outstanding unvested restricted stock units.

    (10)
    As of December 31, 2023, Mr. Weil had fully vested and outstanding options to purchase the following: 42,000 shares at an exercise price of $2.70; 51,813 shares at an exercise price of $10.18; 86,956 shares at an exercise price of $6.60; and 19,169 outstanding unvested options to purchase shares at an exercise price of $4.57. As of December 31, 2023, Mr. Weil also had 13,129 outstanding unvested restricted stock units. Mr. Weil resigned from the Board adopted our 2002 Plan in December 2002. Our stockholders have approved the planeffective February 22, 2024, and all material amendments. Upon the closinghis unvested options and RSUs were forfeited as of our initial public offering, the share reserve available for grant under the 2002 Plansuch date.
    (11)
    Effective September 20, 2023, Mr. Soulas was cancelled and all new grants since then have been made under our 2006 Plan, described below. If any outstanding option under the 2002 Plan expires or is cancelled, the


    shares allocableappointed to the unexercised portionBoard by TMS, pursuant to its board designation right, to replace Mr. Wolffsheim, who resigned from the Board on the same date.


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    EQUITY COMPENSATION PLANS
    Securities Authorized for Issuance Under Equity Compensation Plans
    The following table summarizes information about compensation plans under which our equity securities are authorized for issuance as of that option will be addedDecember 31, 2023:
    Equity Compensation Plan Information
    Plan CategoryNumber of Securities
    to be Issued upon
    Exercise of
    Outstanding Options,
    Warrants and Rights
    Weighted-Average
    Exercise Price of
    Outstanding
    Options, Warrants
    and Rights
    Number of Securities
    Remaining Available
    for Future Issuance
    under Equity
    Compensation Plans
    Equity compensation plans approved by security holders18,225,286(1)$6.00(2)8,587,958(3)
    Equity compensation plans not approved by security holders
    Total18,225,286$6.008,587,958
    (1)
    Of these shares, 1,070,300 were subject to the share reserveoptions then outstanding under the 2006 Plan, and will be available for grant16,755,277 were subject to options then outstanding under the 2006 Plan.

      Administration

            The 2002 Plan may be administered by the Board or a committee of the Board. In the case of options intended to qualify as "performance based compensation" within the meaning of Section 162(m) of the Code, the administrator of the plan will consist of two or more outside directors within the meaning of Section 162(m) of the Code. The administrator has the authority, in its sole discretion:

      to determine the fair market value of the common stock,

      to determine the terms and conditions of any options, including exercise price, the method of payment of the exercise price, term, vesting and whether the option is a non-statutory stock option or an incentive stock option,

      to reduce the exercise price of any option to the then current fair market value if the fair market value of the optioned stock has declined since the date of grant of that option,

      to delegate to others responsibilities to assist in administering the 20022016 Plan, and

      399,709 were subject to construe and interpretRSUs then outstanding under the terms of the 2002 Plan and option agreements and other documentation related2016 Plan. The Company’s authority to the 2002 Plan.

      Eligibility

            Effective upon the closing of our initial public offering, we may no longer grant new options under the 2002 Plan.

      Options

            With respect to options intended to qualify as "performance based compensation" within the meaning of Section 162(m) of the Code, the exercise price must be at least equal to the fair market value of our common stock on the date of grant. In addition, the exercise price for any incentive stock option granted to any employee owning more than 10% of our common stock may not be less than 110% of the fair market value of our common stock on the date of grant. The term of any stock option may not exceed ten years, except that with respect to any participant who owns 10% or more of the voting power of all classes of our outstanding capital stock, the term for incentive stock options must not exceed five years.

            Unless the administrator determines otherwise, unvested shares typically will be subject to forfeiture or to our right of repurchase, which we may exercise upon the voluntary or involuntary termination of the participant's service with us for any reason, including death or disability.

      Adjustments Upon Change in Control

            The 2002 Plan provides that in the event of a "change in control," as defined in the 2002 Plan, our Company and the successor corporation, if any, may agree:

      that all options outstanding on the date that immediately precedes the change in control will become immediately exercisable on that date, with the 2002 Plan terminating upon the date of the change in control (with 21 days prior written notice to the optionees),

      to terminate the 2002 Plan and cancel all outstanding options effective as of the date of the change in control, and either (1) provide 21 days prior written notice to optionees so that the optionees can exercise options that are otherwise exercisable at that time, (2) replace such

        options with comparable options in the successor corporation or parent thereof, or (3) deliver to each optionee the difference between the fair market value of a share on the date of the change in control and the exercise price of the optionee's option, multiplied by the number of shares underlying the option, or

      that the successor corporation or its parent will assume the 2002 Plan and all outstanding options effective as of the date of the change in control.

      Amendment and Termination

            The administrator has the authority to amend, suspend or discontinue the 2002 Plan, subject to the approval of the stockholders in the case of certain amendments. No amendment, suspension or discontinuation will impair the rights of any option, unless agreed to by the optionee.

    Amended and Restated 2006 Equity Incentive Plan

            Our 2006 Plan was initially adopted by our Board and approved by our stockholders in December 2006. Under the 2006 Plan, at December 31, 2015, 20,890,500 shares of common stock were authorized for issuance and 262,461 shares were available for grants of future awards. By the terms of the 2006 Plan, the number of shares authorized for issuance under the 2006 Plan increased by 1,000,000 on January 5, 2016. The number of shares reserved for issuance under the 2006 Plan increases automatically, without the need for further Board or stockholder approval, on the first day of each of our fiscal years (up through January 1, 2016) by the lesser of (1) 15% of our outstanding common stock on the last day of the immediately preceding fiscal year, (2) 1,000,000 shares of common stock, or (3) such lesser number of shares as may be determined by the Board.

            If any outstanding option under the 2002 Plan expires or is cancelled, the shares allocable to the unexercised portion of that option will be added to the share reserve under the 2006 Plan and will become available for grant under the 2006 Plan.

      Share Limit

            No participant in the 2006 Plan can receive option grants, stock appreciation rights or stock awards for more than 2,000,000 shares total in any calendar year, or for more than 4,000,000 shares total in connection with the participant's initial service.

      Administration

            The 2006 Plan is to be administered by our Board or the compensation committee of the Board. In the case of options intended to qualify as "performance based compensation" within the meaning of Section 162(m) of the Code, the administrator of the plan will consist of two or more outside directors within the meaning of Section 162(m) of the Code. The administrator has the authority, in its sole discretion:

      to select the recipients to whom options, stock awards, stock appreciation rights and cash awards may, from time to time, be granted under the 2006 Plan,

      to determine whether and to what extent options, stock awards, stock appreciation rights and cash awards are granted under the 2006 Plan,

      to determine the number of shares that are covered by options, stock awards, and stock appreciation rights and the terms of the related agreements,

      to determine the terms and conditions of any options, stock awards and stock appreciation rights, including exercise price, the method of payment of the exercise price, term, vesting and whether an option is a non-statutory stock option or an incentive stock option, and

      to construe and interpret the terms of the 2006 Plan and agreements and other documentation related to the 2006 Plan.

      Eligibility

            The 2006 Plan provides for the grant of options to purchase shares of common stock, stock awards, stock appreciation rights and cash awards. Incentive stock options may be granted only to employees. Nonstatutory stock options and other stock based awards may be granted to employees, non-employee directors, advisors and consultants.

      Vesting

            Although the 2006 Plan provides the administrator with the discretion to determine the vesting schedule, we expect that options (other than the initial option grants) and stock awards (other than initial stock awards) will generally vest over three years, at a rate of 34%, 33%, and 33% per year, respectively, if the grantee is then in service to the Company.

      Adjustments Upon Change in Control

            The 2006 Plan provides that in the event of a "change in control," as defined in the 2006 Plan, all awards outstanding on the date that immediately precedes the change in control will become immediately exercisable on that date, unless otherwise expressly provided in the award agreement.

      Amendment and Termination

            The plan terminates 10 years after its initial adoption, unless earlier terminated by the Board. The Board or the compensation committee may amend or terminate the plan at any time, subject to stockholder approval where required by applicable law. Any amendment or termination may not impair the rights of holders of outstanding awards without their consent.

      U.S. Tax Consequences Relating to the 2006 Plan

            The federal tax rules applicable to awards under the 2006 Plan terminated upon the adoption of the 2016 Plan in May 2016. If stockholders approve the 2024 Plan at the Annual Meeting, any shares then available under the Code are summarized below. This summary omits the tax laws of any municipality, state, or foreign country in which a participant resides. Stock option grants2016 Plan will become available under the 20062024 Plan, and we will no longer have the authority to grant new awards under the 2016 Plan.

    (2)
    This weighted-average exercise price does not reflect 399,709 shares that will be issued upon the settlement of outstanding RSUs.
    (3)
    Represents (a) 6,250,580 shares available for future issuance under the 2016 Plan as of December 31, 2023, and (b) 2,397,334 shares available for future issuance under the ESPP, excluding 59,956 shares that were subject to purchase under the ESPP during the purchase period ended December 31, 2023. Shares available under the 2016 Plan may be intendedused for any type of award authorized in that plan. This column does not reflect the 4,000,000 additional shares that will be available under the 2024 Plan if stockholders approve the 2024 Plan at the Annual Meeting.

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    CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS
    Related Party Transactions
    Except as described below, since January 1, 2023, there has not been, nor is there currently proposed, any transaction or series of similar transactions in which we were or are to qualify as incentivebe a participant, in which the amount involved exceeds $120,000 and in which any of our directors, executive officers, holders of more than 5% of our common stock options under Section 422or any immediate family member of any of the Codeforegoing had or will have a direct or indirect material interest. This does not include employment compensation or compensation for Board service, which are described elsewhere in this Proxy Statement.
    Relationships with TotalEnergies and its Affiliates
    During 2023, the Company recognized revenue of $1.4 million related to RINs and LNG sold to TotalEnergies and its affiliates in the ordinary course of business and AFTCs associated therewith.
    During 2023, the Company paid TotalEnergies $6.9 million for expenses incurred in the ordinary course of business and settlements on commodity swap contracts.
    TotalEnergies Agreements
    On May 9, 2018, we entered into a stock purchase agreement (the “Purchase Agreement”) with TotalEnergies Marketing Services, SAS (“TMS”) for the sale and issuance to TMS of up to 50,856,296 shares of our common stock, representing approximately 25% of the outstanding shares of our common stock and the largest ownership position of our Company, for a per share purchase price of $1.64 and an aggregate cash purchase price of $83.4 million. The TotalEnergies private placement closed on June 13, 2018.
    Pursuant to the Purchase Agreement, TMS has the right to designate up to two individuals to serve as directors on our Board. Subject to certain limited conditions as described in the Purchase Agreement, including compliance with our governing documents and all applicable laws, rules and regulations, we will be obligated to appoint or nominate for election as directors of our Company the individuals so designated by TMS and, from and after such appointment or election, either (1) appoint one of these individuals to serve on the audit committee of the Board and any other Board committees that may be formed from time to time for the purpose of making decisions that are strategically significant to our Company, or (2) nominate another individual as an observer of such Board committees, who is to be invited to attend all meetings of such committees in a non-voting observer capacity. TMS’ rights and our obligations relating to these designees and observers continue until (and if) (a) with respect to TMS’ right to designate two individuals to serve as directors on our Board and an optional observer to serve on certain Board committees, TMS’ voting power is less than 16.7% but more than 10.0%, and (b) with respect to TMS’ right to designate one individual to serve as a director on our Board and an optional observer to serve on certain Board committees, TMS’ voting power is less than 10.0%, in each case measured in relation to the votes then entitled to be cast in an election of directors by our stockholders.
    The Purchase Agreement also provides that, until the later of May 9, 2020 or such date when TMS ceases to hold more than 5% of our common stock then outstanding, among other similar undertakings and subject to customary conditions and exceptions, TMS and its affiliates are prohibited from purchasing shares of our common stock or otherwise pursuing transactions that would result in TMS owning more than 30% of our equity securities without the approval of our Board.
    In connection with the Purchase Agreement on May 9, 2018, we and all of our then-directors and officers entered into a voting agreement with TMS. Pursuant to the voting agreement, each of our directors and officers agreed to vote all shares of our common stock presently or hereafter owned or controlled by such director or officer, in any vote of our stockholders that may be held from time to time, in favor of the election of the individuals designated by TMS to serve as directors on our Board. Each of our directors and officers has also granted to TMS a proxy to vote all such shares in accordance with the terms of the voting agreement. For each of our directors and officers party to the voting agreement, the voting obligations contained in the agreement continue from and after, and for so long as, TMS’ director designation rights

    65


    are in effect, as described above, and such director or officer continues to serve in such capacity for our Company and continues to hold shares of our common stock.
    Pursuant to the Purchase Agreement, we also entered into a registration rights agreement with TMS on June 13, 2018. Pursuant to the registration rights agreement, we became obligated to, at our expense, (1) file one or more registration statements with the SEC to cover the resale of the shares of our common stock purchased by TMS under the Purchase Agreement, (2) use our commercially reasonable efforts to cause all such registration statements to be declared effective in a timely manner, (3) use our commercially reasonable efforts to maintain the effectiveness of such registration statements until all such shares are sold or may be non-qualified stock options governed by Section 83sold without restriction pursuant to applicable rules under the Securities Act, and (4) make and keep available adequate current public information and timely file with the SEC all required reports and other documents until all such shares are sold or may be sold without restriction. If such registration statements are not filed or declared effective as described above or any such effective registration statements subsequently become unavailable for more than 30 days in any 12-month period while they are required to be maintained as effective, then we would be required to pay liquidated damages to TMS equal to 0.75% of the Code. Generally, no federal income taxaggregate purchase price for the shares remaining eligible for such registration rights each month for each such failure (up to a maximum of 4.0% of the aggregate purchase price for the shares remaining eligible for such registration rights each year).
    Commodity Swap Arrangements
    In October 2018, we entered into commodity swap arrangements with TotalEnergies Gas & Power North America, an affiliate of TotalEnergies and TotalEnergies Holdings USA Inc. (“THUSA”), intended to manage diesel price fluctuation risks related to the natural gas fuel supply commitments we expect to make in our anticipated fueling agreements with fleet operators that participate in our Zero Now truck financing program, which arrangements cover five million diesel gallons of natural gas fuel volume annually from April 2019 through June 2024. During the year ended December 31, 2023, the Company paid TotalEnergies Gas & Power North America $6.3 million for settlements on commodity swap contracts and recognized revenue of $1.4 million related to settlements on commodity swap contracts.
    Joint Venture
    On March 3, 2021, we entered into an agreement (the “TotalEnergies JV Agreement”) with TotalEnergies to create 50/50 joint ventures to develop anaerobic digester gas (“ADG”) RNG production facilities in the United States. The TotalEnergies JV Agreement contemplates investing up to $400.0 million of equity in production projects, and TotalEnergies and the Company each committed to initially provide $50.0 million. Pursuant to the TotalEnergies JV Agreement, the Company and TotalEnergies have given each party a limited right of first opportunity to invest in ADG RNG projects they respectively originate. Currently, there is payable by a participant uponone ADG RNG joint venture project under construction pursuant to the grantTotalEnergies JV Agreement. This project is estimated to produce up to 1.1 million GGEs of a stock option,RNG annually, all of which will be available to us for sale to the vehicle fuels market. During 2023, the Company recognized management fee revenue of $0.3 million related to the joint venture with TotalEnergies.
    Relationship Involving Mr. Littlefair
    The son of Andrew J. Littlefair, our President and a deductionChief Executive Officer, is not takenemployed by the Company. Under current tax laws, ifCompany in a participant exercises a non-qualified stock option, he or she will have taxable income equal tonon-executive officer position and received total cash compensation of approximately $124,440 in 2023. His compensation, which was approved by the difference betweenCompany’s audit committee, was established by the market price of the common stock on the exercise date and the stock option grant price. We will be entitled to a corresponding deduction on our income tax return. A participant will not have any taxable income upon exercising an incentive stock option after theCompany in accordance with its compensation practices applicable holding periods have been satisfied (except that the alternative minimum tax may apply), and we will not receive a deduction when an incentive stock option is exercised. The treatment for a participant of a disposition of shares acquired through the exercise of a stock option depends on how long the shares were held and on whether the shares were acquired by exercising an incentive stock option or a non-qualified stock option. We may be entitled to a deduction in the case of a disposition of shares acquired under an incentive stock option before the applicable holding periods have been satisfied.

            Restricted stock is also governed by Section 83 of the Code. Generally, no taxes are due when the award is initially made, but the award becomes taxable when it is no longer subject to a "substantial risk of forfeiture" (it becomes vested or transferable). Income tax is paid on the value of the stock or units at ordinary rates when the restrictions lapse, and then at capital gain rates when the shares are sold.


            Section 409A of the Code affects taxation of awards to employees but does not affect our ability to deduct deferred compensation. Section 409A does not apply to incentive stock options, non-qualified stock options (that are not discounted),with comparable qualifications and restricted stock, provided that there is no deferralresponsibilities and holding similar positions and without the involvement of income beyond the vesting date. Section 409A also does not cover stock appreciation rights if the stock appreciation rights are issued by a public company on its traded stock, the exercise price is not less than the fair market value of the underlying stock on the date of grant, the rights are settled in such stock,Andrew J. Littlefair.

    Policies and there are not any features that defer the recognition of income beyond the exercise date. It is the Company's intentProcedures for Related Party Transactions
    Our audit committee charter requires that all awards granted under the 2006 Plan comply with Section 409A of the Code.

            As described above, awards granted under the 2006 Plan may qualifyrelated party transactions, as "performance based compensation" under Section 162(m) of the Code. To qualify, options and other awards mustdefined in applicable SEC rules, be granted under the 2006 Plan by a committee consisting solely of two or more "outside directors" (as defined under Section 162 regulations) and satisfy the 2006 Plan's limit on the total number of shares that may be awarded to any one participant during any calendar year. In addition, for awards other than options and stock settled stock appreciation rights to qualify, the grant, issuance, vesting, or retention of the award must be contingent upon satisfying one or more of the performance criteria set forth in the 2006 Plan, as established and certified by a committee consisting solely of two or more "outside directors."

    Employee Stock Purchase Plan

            The ESPP was adopted by the Board in February 2013reviewed and approved by our stockholders in May 2013. Under the ESPP, eligible employees may authorize payroll deductions of eligible compensation for the purchase of common stock during each purchase period.

      Administration

            The compensationaudit committee serves as the administratoror another independent body of the ESPP, and asBoard, in accordance with applicable Nasdaq rules. When evaluating any such has full authority to adopt such rules and procedures as it may deem necessary for proper plan administration and to interprettransaction, our audit committee focuses on whether the provisionsterms of the ESPP.

      Shares Available Under the ESPP

            A total of 2,500,000 shares of common stocktransaction are authorized for purchase over the termat least as favorable to us as terms we would receive on an arm’s-length basis from an unaffiliated third party. Each of the ESPP, subjecttransactions described above that was required to adjustment in the event of a stock split, stock dividend, combination or reclassification or similar event.

      Offering Periods

            The ESPP is implemented through two offering periods per calendar year, with each offering period lasting six months. The administrator of the ESPP may alter the duration of future offering periods in advance without stockholder approval. Each participant is granted a separate purchase right to purchase shares of common stock for each offering period in which he or she participates. Purchase rights under the ESPP are granted on the start date of each offering period in which the participant participatesbe reviewed and are automatically exercised on the last day of the offering period. Each purchase right entitles the participant to purchase the whole number of shares of common stock obtained by dividing the participant's payroll deductions for the offering periodapproved by the purchase priceaudit committee in effect for such period.

      Eligibility

            Except as described in this paragraphaccordance with respect to certain foreign employees, all employees of the Companyits charter was so reviewed and its subsidiaries are eligible to participate in the ESPP, except that the ESPP

    approved.


    66

    administrator may exclude from an offering period any individual who is regularly expected to work less than twenty hours per week or less than five months per calendar year in the employ of the Company or any subsidiary, or has not been employed for such continuous period as the ESPP administrator may require (not to exceed two years). An eligible employee may only join an offering period on the start date of that period. Subsidiaries include any subsidiary corporation of the Company, whether now existing or hereafter organized, which elects, with the approval of the ESPP administrator, to extend the benefits of the ESPP to their eligible employees. Employees who are citizens or residents of a non-U.S. jurisdiction (without regard to whether he or she is also a citizen of the United States or a resident alien (within the meaning of Section 7701(b)(1)(A) of the Code)) are ineligible to participate in the ESPP if his or her participation is prohibited under the laws on the applicable non-U.S. jurisdiction or if complying with the laws of the applicable non-U.S. jurisdiction would cause the ESPP or an offering to violate Section 423 of the Code.

      Purchase Provisions

            Each participant in the ESPP may authorize periodic payroll deductions that may not exceed the lesser of (i) 10% of his or her compensation, which is defined in the ESPP to include his or her regular base salary in effect at the beginning of the offering period, exclusive of any payments for overtime, bonuses, annual awards, other incentive payments, reimbursements of expense allowances, fringe benefits (cash or non-cash), moving expenses, deferred compensation, or contributions (other than contributions under a 401(k) or cafeteria plan) and (ii) such lesser amount determined by the administrator of the ESPP per offering period. A participant may increase or reduce his or her rate of payroll deductions during an offering period. On the last day of each offering period, the accumulated payroll deductions of each participant are automatically applied to the purchase of shares of common stock at the purchase price in effect for that period.

      Purchase Price

            The purchase price per share at which common stock is purchased on the participant's behalf for each offering period is equal to 85% of the fair market value per share of the common stock on the last day of the offering period.

      Valuation

            The fair market value of the common stock on a given date is the closing sales price of the common stock on the NASDAQ Global Select Market as of such date.

      Special Limitations

            The ESPP imposes certain limitations upon a participant's right to acquire common stock, including the following limitations:

      No purchase right may be granted to any individual who owns stock (including stock purchasable under any outstanding options or purchase rights) possessing 5% or more of the total combined voting power or value of all classes of stock of the Company or any of its affiliates.

      No purchase right granted to a participant may permit such individual to purchase common stock at a rate greater than $25,000 worth of such common stock (valued at the time such purchase right is granted) for each calendar year.

      Termination of Purchase Rights

            A participant's purchase right immediately terminates upon such participant's loss of eligible employee status, and his or her accumulated payroll deductions for the offering period in which the


    purchase right terminates are refunded. A participant may withdraw from an offering period by giving advance notice prior to the end of that period and his or her accumulated payroll for the offering period in which withdrawal occurs shall be refunded.

      Assignability

            The purchase rights are not assignable or transferable (other than by will or the laws of descent and distribution) and are exercisable only by the participant.

      Corporate Transaction

            In the event of the proposed dissolution or liquidation of the Company, the then-current offering period will terminate immediately prior to the consummation of such dissolution or liquidation, unless otherwise provided by the ESPP administrator. In the event of "corporate transaction," as defined in the ESPP, during an offering period, all outstanding purchase rights shall be assumed by the successor corporation (or a parent or subsidiary thereof), unless the ESPP administrator determines, in its sole discretion, to shorten the offering period then in-effect to a new purchase date. If the ESPP administrator shortens the offering period then in progress to a new purchase date, the ESPP administrator will provide notice to each participant that (i) his or her purchase right will be automatically exercised on the new purchase date or (ii) the Company will pay to him or her, on the new purchase date, cash, cash equivalents, or property as determined by the ESPP administrator that is equal to the difference in the fair market value of the shares of common stock covered by his or her purchase right and the purchase price due had the purchase right been automatically exercised on the new purchase date.

      Changes in Capitalization

            In the event any change is made to the outstanding shares of common stock by reason of any stock split, stock dividend, recapitalization, combination of shares, exchange of shares or other change in corporate structure effected without the Company's receipt of consideration, appropriate adjustments will be made to (i) the maximum number of securities issuable under the ESPP, including the maximum number of securities issuable per participant on any one purchase date and (ii) the number of securities subject to each outstanding purchase right and the purchase price payable per share thereunder.

      Amendment and Termination

            The administrator of the ESPP may at any time terminate or amend the ESPP. To the extent necessary to comply with Section 423 of the Code (or any successor rule or provision or any other applicable law), the Company shall obtain stockholder approval in such a manner and to such a degree as may be required. The ESPP will terminate upon the earlier to occur of (i) 10 years following the date of the original adoption of the ESPP or (ii) the date on which all purchase rights are exercised in connection with a Corporate Transaction.

      U.S. Tax Consequences Relating to the ESPP

            The ESPP is intended to be an "employee stock purchase plan" within the meaning of Section 423 of the Code. Under a plan which so qualifies, no taxable income will be recognized by a participant, and no deductions will be allowable to the Company, in connection with the grant or exercise of an outstanding purchase right.

            Taxable income will not be recognized until there is a sale or other disposition of the shares acquired under the ESPP or in the event the participant should die while still owning the purchased shares.


            If the participant sells or otherwise disposes of the purchased shares within two years after the start date of the offering period in which such shares were acquired or within one year after the actual purchase date of those shares, then the participant will recognize ordinary income in the year of such sale or disposition equal to the amount by which the fair market value of the shares on the purchase date exceeded the purchase price paid for those shares, and the Company will be entitled to an income tax deduction, for the taxable year in which such sale or disposition occurs, equal in amount to such excess.

            If the participant sells or disposes of the purchased shares more than two years after the start date of the offering period in which such shares were acquired and more than one year after the actual purchase date of those shares, then the participant will recognize ordinary income in the year of such sale or disposition equal to the lesser of (i) the amount by which the fair market value of the shares on the sale or disposition date exceeds the purchase price paid for those shares or (ii) 15% of the fair market value of the shares on the start date of the offering period, and any additional gain upon the disposition will be taxed as long-term capital gain. The Company will not be entitled to any income tax deduction with respect to such sale or disposition.

            If the participant still owns the purchased shares at the time of his or her death, the lesser of (i) the amount by which the fair market value of the shares on the date of death exceeds the purchase price and (ii) 15% of the fair market value of the shares on his or her entry date into the offering period in which those shares were acquired will constitute ordinary income in the year of death.


    TABLE OF CONTENTS
    REPORT OF THE


    AUDIT COMMITTEE OF THE BOARD

    REPORT

    The audit committee overseesis responsible for overseeing our accounting, auditing and financial reporting processpractices on behalf of the Board. Management is responsible for the preparation presentation and integritypresentation of our consolidated financial statements, including establishing accounting and financial reporting principles and designingestablishing and maintaining systems of internal control over financial reporting. Our independent registered public accounting firm is responsible for expressing an opinion on our consolidated financial statements and an opinion on our internal control over financial reporting.

    In performing its responsibilities, the audit committee has reviewed and discussed, with management and KPMG LLP, our independent registered public accounting firm, the audited consolidated financial statements included in the Annual Report. The audit committee has also discussed with KPMG LLP the matters required to be discussed by Auditing Standards No. 16, "Communications with Audit Committees."

            Pursuant to the applicable independence requirements of the Public Company Accounting Oversight Board (United States),(the “PCAOB”) and the SEC.

    Additionally, the audit committee has received the required written disclosures and the letter from KPMG LLP required by applicable requirements of the PCAOB regarding KPMG LLP’s communications with the audit committee concerning independence and has discussed with KPMG LLP its independence.

    Based on the reviews and discussions referred to above, the audit committee recommended to the Board that the audited consolidated financial statements of Clean Energy Fuels Corp. be included in our annual report on Form 10-K for the year ended December 31, 2023 for filing with the SEC.
    Audit Committee:
    James C. Miller III,
    Chairman
    Patrick J. Ford
    Stephen A. Scully
    Vincent C. Taormina
    This audit committee report shall not be deemed to be “soliciting material,” or to be “filed” with the SEC or subject to Regulation 14A or 14C under the Exchange Act, other than as provided by applicable SEC rules, or to the liabilities of Section 18 of the Exchange Act, except to the extent that we specifically request that the information be treated as soliciting material or specifically incorporate it by reference into a document filed under the Securities Act or the Exchange Act. This audit committee report will not be deemed to be incorporated by reference into any filing under the Securities Act or the Exchange Act, except to the extent that we specifically incorporate it by reference.

    67


    OTHER MATTERS
    Stockholder Proposals for 2025 Annual Meeting
    Stockholder Proposals to be Considered for Inclusion in Our Proxy Materials
    Stockholder proposals submitted pursuant to Rule 14a-8 under the Exchange Act and intended to be presented at our 2025 annual meeting of stockholders and considered for inclusion in our proxy materials for that meeting must be received by our Secretary at our principal executive offices no later than December 2, 2024. However, if we change the date of the 2025 annual meeting of stockholders by more than 30 days from the date of this year’s Annual Meeting, then such proposals must be received a reasonable time before we begin to print and send our proxy materials for the 2025 annual meeting of stockholders.
    Director Nominations or Stockholder Proposals to be Brought Before an Annual Meeting But Not Included in Our Proxy Materials
    Our amended and restated bylaws provide that, for stockholder nominations of directors or other proposals to be considered at an annual meeting but not sought to be included in our proxy materials for the meeting, the stockholder must have given timely written notice of the director nomination or proposal to us. To be timely for our 2025 annual meeting of stockholders, a stockholder’s notice must be delivered to or mailed and received by our Corporate Secretary at our principal executive offices between the close of business on February 15, 2025 and the close of business on March 17, 2025; provided, however, that if our 2025 annual meeting of stockholders is not held between April 16, 2025 and June 15, 2025, then notice will be timely if it is received not earlier than the close of business on the 90th day prior to such annual meeting and not later than the close of business on the later of the 60th day prior to such annual meeting or, in the event public announcement of the date of such annual meeting is first made by us fewer than 70 days prior to the date of such annual meeting, the close of business on the 10th day following the day on which public announcement of the date of such meeting is first made by us. A stockholder’s notice to the Company must set forth, as to each director nominee or other proposal the stockholder proposes to bring before our 2025 annual meeting, all of the information required by our amended and restated bylaws. We will not entertain any director nominations or other proposals at the Annual Report.

    Audit Committee:
    James C. Miller III,Chairman
    John S. Herrington
    Stephen A. Scully
    Vincent C. Taormina


    CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

            Since January 1, 2015, there hasMeeting or at our 2025 annual meeting that do not been, nor is there currently proposed, any transaction or series of similar transactions to which we are or were a participant, in whichmeet the amount involved exceeds $120,000 and in which any of our directors, executive officers, holders of more than five percent of our common stock or any immediate family member of any of the foregoing had, or will have, a direct or indirect material interest. This does not include employment compensation or compensation for Board service, which are described elsewhere in this Proxy Statement.

            Our audit committee charter requires that all related party transactions, as defined in Item 404(a) of Regulation S-K promulgated by the SEC, be reviewed and approved by our audit committee, in accordance with NASDAQ Marketplace Rule 5630. When evaluating such transactions, our audit committee focuses on whether the terms of such transactions are at least as favorable to us as terms we would receive on an arm's-length basis from an unaffiliated third party. The policies and procedures for approving related party transactions arerequirements set forth in our audit committee charter,amended and restated bylaws. Stockholder proposals or director nominations submitted to the Company’s Secretary that do not comply with the above requirements may not be brought before the 2025 annual meeting of stockholders.

    In addition, a stockholder who intends to solicit proxies in support of director nominees other than the Company’s nominees at the 2025 annual meeting of stockholders must provide written notice to the Company setting forth the information required by Rule 14a-19 under the Exchange Act, unless the required information has been provided in a preliminary or definitive Proxy Statement previously filed by the stockholder. Such written notice must be provided in accordance with Rule 14a-19 no later than March 17, 2025. If we change the date of the 2025 annual meeting of stockholders by more than 30 days from the date of this year’s Annual Meeting, written notice must be provided by the later of 60 days prior to the date of the 2025 annual meeting of stockholders or the 10th day following the day on which was adoptedpublic announcement of the date of the 2025 annual meeting of stockholders is first made. The notice requirement under Rule 14a-19 is in September 2006addition to the applicable notice requirements under our amended and revised in December 2015.


    OTHER MATTERS

    restated bylaws as described above.

    Other Business at the Annual Meeting
    We have not received any notice of other business to come before the Annual Meeting as of the date of this Proxy Statement and we do not otherwise know of noany other mattersbusiness to be submitted at the Annual Meeting. If any other matters are properly brought before the Annual Meeting, itthe individuals we have designated as proxies for the Annual Meeting will vote on such matters in their discretion. It is the intention of the persons named in the enclosed proxy cardsuch individuals to vote the shares that they representrepresented by proxy at the Annual Meeting on any such matter as recommended by the Board or, if no recommendation is given, in accordance with their judgment.


    68


    More Information About the Company
    For furthermore information about Clean Energy Fuels Corp.,the Company, please refer to our Annual Report, which accompanies this Proxy Statement. Our annual report on Form 10-K for the year ended December 31, 2023, which is a part of the Annual Report, was filed with the SEC on March 3, 2016,February 29, 2024, and is publicly availableaccessible on our website athttp:https://investors.cleanenergyfuels.com/SEC.cfmannual-reports. You may also obtain a copy of the Annual Report at no charge and copies of any exhibit listed in the Annual Report for a fee (equal to our reasonable expenses in furnishing such exhibit) by sending a written request to the attention of Investor Relations Clean Energy Fuels Corp., 4675 MacArthur Court, Suite 800, Newport Beach, California 92660.

    By order of the Board,




    GRAPHIC
    MITCHELL W. PRATT
    Corporate Secretary
    at the address of our principal executive offices.

    By order of the Board,

    [MISSING IMAGE: sg_jameswsytsma-bw.jpg]
    JAMES W. SYTSMA
    Corporate Secretary

    69


    Annex A

    CLEAN ENERGY FUELS CORP.
    2016
    2024
    PERFORMANCE INCENTIVE PLAN

    1.
    PURPOSE OF PLAN

    The purpose of this Clean Energy Fuels Corp. 20162024 Performance Incentive Plan (this "Plan") of Clean Energy Fuels Corp., a Delaware corporation (the "Corporation"), is to promote the success of the Corporation and the interests of the Corporation'sCorporation’s stockholders by providing an additional means through the grant of awards to attract, motivate, retain and reward selected employees and other eligible persons.

    2.
    ELIGIBILITY

    The Administrator (as such term is defined in Section 3.1) may grant awards under this Plan only to those persons that the Administrator determines to be Eligible Persons. An "Eligible Person" is any person who is either: (a) an officer (whether or not a director) or employee of the Corporation or one of its Subsidiaries; (b) a director of the Corporation or one of its Subsidiaries; or (c) an individual consultant or advisor who renders or has rendered bona fide services (other than services in connection with the offering or sale of securities of the Corporation or one of its Subsidiaries in a capital-raising transaction or as a market maker or promoter of securities of the Corporation or one of its Subsidiaries) to the Corporation or one of its Subsidiaries and who is selected to participate in this Plan by the Administrator; provided, however, that a person who is otherwise an Eligible Person under clause (c) above may participate in this Plan only if such participation would not adversely affect either the Corporation'sCorporation’s eligibility to use Form S-8 to register under the Securities Act of 1933, as amended (the "Securities Act"), the offering and sale of shares issuable under this Plan by the Corporation or the Corporation'sCorporation’s compliance with any other applicable laws. An Eligible Person who has been granted an award (a "participant"participant) may, if otherwise eligible, be granted additional awards if the Administrator shall so determine. As used herein, "Subsidiary" means any corporation or other entity a majority of whose outstanding voting stock or voting power is beneficially owned directly or indirectly by the Corporation; and "Board" means the Board of Directors of the Corporation.

    3.
    PLAN ADMINISTRATION

    3.1The Administrator.   This Plan shall be administered by and all awards under this Plan shall be authorized by the Administrator. The "Administrator" means the Board or one or more committees appointed by the Board or another committee (within its delegated authority) to administer all or certain aspects of this Plan. Any such committee shall be comprised solely of one or more directors or such number of directors as may be required under applicable law. A committee may delegate some or all of its authority to another committee so constituted. The Board or a committee comprised solely of directors may also delegate, to the extent permitted by Section 157(c) of the Delaware General Corporation Law and any other applicable law, to one or more officers of the Corporation, its powers under this Plan (a) to designate the officers and employees of the Corporation and its Subsidiaries who will receive grants of awards under this Plan, and (b) to determine the number of shares subject to, and the other terms and conditions of, such awards. The Board may delegate different levels of authority to different committees with administrative and grant authority under this Plan. Unless otherwise provided in the Bylaws of the Corporation or the applicable charter of any Administrator: (a) a majority of the members of the acting Administrator shall constitute a quorum, and (b) the vote of a majority of the members present assuming the presence of a quorum or the unanimous written consent of the members of the Administrator shall constitute action by the acting Administrator.

    3.2Powers of the Administrator.   Subject to the express provisions of this Plan, the Administrator is authorized and empowered to do all things necessary or desirable in connection with the


    authorization of awards and the administration of this Plan (in the case of a committee or delegation to one or more officers, within any express limits on the authority delegated to that committee or person(s)), including, without limitation, the authority to:

    (a)

    determine eligibility and, from among those persons determined to be eligible, the particular Eligible Persons who will receive an award under this Plan;


    A-1


    (b)

    grant awards to Eligible Persons, determine the price (if any) at which securities will be offered or awarded and the number of securities to be offered or awarded to any of such persons (in the case of securities-based awards), determine the other specific terms and conditions of awards consistent with the express limits of this Plan, subject to the limits of this Section 3.2, establish the installment(s) (if any) in which such awards shall become exercisable or shall vest (which may include, without limitation, performance and/or time-based schedules), or determine that no delayed exercisability or vesting is required, establish any applicable performance-based exercisability or vesting requirements, determine the extent (if any) to which any applicable exercise and vesting requirements have been satisfied, and establish the events (if any) of termination, expiration or reversion of such awards;

    (c)

    approve the forms of any award agreements (which need not be identical either as to type of award or among participants);

    (d)

    construe and interpret this Plan and any agreements defining the rights and obligations of the Corporation, its Subsidiaries, and participants under this Plan, make any and all determinations necessary under this Plan and any such agreements, further define the terms used in this Plan, and prescribe, amend and rescind rules and regulations relating to the administration of this Plan or the awards granted under this Plan;

    (e)

    cancel, modify, or waive the Corporation'sCorporation’s rights with respect to, or modify, discontinue, suspend, or terminate any or all outstanding awards, subject to any required consent under Section 8.6.5;

    8.6(e);
    (f)

    accelerate, waive or extend the vesting or exercisability, or modify or extend the term of, any or all such outstanding awards (in the case of options or stock appreciation rights, within the maximum ten-year term of such awards) in such circumstances as the Administrator may deem appropriate (including, without limitation, in connection with a termination of employment or services or other events of a personal nature) subject to any required consent under Section 8.6.5;

    8.6(e);
    (g)

    adjust the number of shares of Common Stock subject to any award, adjust the price of any or all outstanding awards or otherwise waive or change previously imposed terms and conditions, in such circumstances as the Administrator may deem appropriate, in each case subject to Sections 4 and 8.6 (and subject to the no repricing provision below);

    (h)

    determine the date of grant of an award, which may be a designated date after but not before the date of the Administrator'sAdministrator’s action to grant the award (unless otherwise designated by the Administrator, the date of grant of an award shall be the date upon which the Administrator took the action granting an award);

    (i)

    determine whether, and the extent to which, adjustments are required pursuant to Section 7.1 hereof and take any of the actions contemplated by Section 7.2 in connection with the occurrence of an event of the type contemplated by Section 7.2;

    (j)

    acquire or settle (subject to Sections 7 and 8.6) rights under awards in cash, stock of equivalent value, or other consideration (subject to the no repricing provision below); and

      (k)

    determine the fair market value of the Common Stock or awards under this Plan from time to time and/or the manner in which such value will be determined.

    Notwithstanding the foregoing and except for an adjustment pursuant to Section 7.1 or a repricing approved by stockholders, in no case may the Administrator (1) amend an outstanding stock option or SAR to reduce the exercise price or base price of the award, (2) cancel, exchange, or surrender an outstanding stock option or SAR in exchange for cash or other awards for the purpose of repricing the award, or (3) cancel, exchange, or surrender an outstanding stock option or SAR in exchange for an option or SAR with an exercise or base price that is less than the exercise or base price of the original award.

    Notwithstanding the foregoing, and except as provided in the next sentence, all awards granted under this Plan shall be subject to a minimum vesting requirement of one year, and no portion of any award may vest earlier than the first anniversary of the grant date of the award (the "Minimum Vesting Requirement").

    A-2


    The Minimum Vesting Requirement shall not apply to 5% of the total number of shares available under this Plan, and shall not limit or restrict the Administrator'sAdministrator’s discretion to accelerate the vesting of any award in circumstances it determines to be appropriate.

    3.3Binding Determinations.   Any determination or other action taken by, or inaction of, the Corporation, any Subsidiary, or the Administrator relating or pursuant to this Plan (or any award made under this Plan) and within its authority hereunder or under applicable law shall be within the absolute discretion of that entity or body and shall be conclusive and binding upon all persons. Neither the Board nor any Board committee, nor any member thereof or person acting at the direction thereof, shall be liable for any act, omission, interpretation, construction or determination made in good faith in connection with this Plan (or any award made under this Plan), and all such persons shall be entitled to indemnification and reimbursement by the Corporation in respect of any claim, loss, damage or expense (including, without limitation, attorneys'attorneys’ fees) arising or resulting therefrom to the fullest extent permitted by law and/or under any directors and officers liability insurance coverage that may be in effect from time to time. Neither the Board nor any Board committee, nor any member thereof or person acting at the direction thereof, nor the Corporation or any of its Subsidiaries, shall be liable for any damages of a participant should an option intended as an ISO (as defined below) fail to actually meet the requirements of the Internal Revenue Code of 1986, as amended (the "Code"), applicable to ISOs, should any other award(s) fail to qualify for any intended tax treatment, should any award grant or other action with respect thereto not satisfy Rule 16b-3 promulgated under the Securities Exchange Act of 1934, as amended, or otherwise for any tax or other liability imposed on a participant with respect to an award.

    3.4Reliance on Experts.   In making any determination or in taking or not taking any action under this Plan, the Administrator may obtain and may rely upon the advice of experts, including employees and professional advisors to the Corporation. No director, officer or agent of the Corporation or any of its Subsidiaries shall be liable for any such action or determination taken or made or omitted in good faith.

    3.5Delegation.   The Administrator may delegate ministerial, non-discretionary functions to individuals who are officers or employees of the Corporation or any of its Subsidiaries or to third parties.

    4.
    SHARES OF COMMON STOCK SUBJECT TO THE PLAN; SHARE LIMITS

    4.1Shares Available.   Subject to the provisions of Section 7.1, the capital stock that may be delivered under this Plan shall be shares of the Corporation'sCorporation’s authorized but unissued Common Stock and any shares of its Common Stock held as treasury shares. For purposes of this Plan, "Common Stock" shall mean the common stock of the Corporation and such other securities or property as may


    become the subject of awards under this Plan, or may become subject to such awards, pursuant to an adjustment made under Section 7.1.

    4.2Share Limits.   The maximum number of shares of Common Stock that may be delivered pursuant to awards granted to Eligible Persons under this Plan (the "Share Limit") is equal to the sum of the following:

      (1)
      6,050,000
    (a)
    4,000,000 shares of Common Stock, plus

    (2)
    (b)
    the number of shares of Common Stock available for additional award grant purposes under the Amended and Restated 2016 Performance Incentive Plan (the “2016 Plan”) as of the date of stockholder approval of this Plan (the “Stockholder Approval Date”) and determined immediately prior to the termination of authority to grant new awards under the 2016 Plan as of the Stockholder Approval Date, plus
    (c)
    the number of any shares subject to stock options granted under the Corporation's Amended and Restated 2002 Stock Option Plan (the "2002 Plan") or theCorporation’s Amended and Restated 2006 Equity Incentive Plan (the "2006 Plan") and the 2016 Plan and outstanding on the date of the stockholder approval of this Plan (the "Stockholder Approval Date") which expire, or for any reason are cancelled or terminated, after the Stockholder Approval Date without being exercised, plus;

    (3)
    plus
    (d)
    the number of any shares subject to restricted stock and restricted stock unit awards granted under the 20022006 Plan or the 20062016 Plan that are outstanding and unvested on the Stockholder Approval Date that are forfeited, terminated, cancelled or otherwise reacquired by the Corporation after the Stockholder Approval Date without having become vested.

    vested, provided that in order to


    A-3


    take the Full Value Award ratio below into account, each share subject to any such award shall be credited as 1.5 shares when determining the number of shares that shall become available for new awards under this Plan,
    provided that in no event shall the Share Limit exceed 20,594,15924,675,720 shares (which is the sum of the 6,050,0004,000,000 shares set forth above, plus the number of shares available under the 2016 Plan for additional award grant purposes as of the Effective Date defined below, plus the aggregate number of shares subject to awards previously granted and outstanding under the 20022006 Plan and the 20062016 Plan as of the Effective Date)Date, with any shares subject to restricted stock and restricted stock unit awards outstanding under the 2006 Plan and the 2016 Plan being taken into account based on the Full-Value Award share counting ratio of 1.5).

    Shares issued in respect of any "Full-Value Award"“Full-Value Award” granted under this Plan shall be counted against the foregoing Share Limit as 1.5 shares for every one share issued in connection with such award. (For example, if a stock bonus of 100 shares of Common Stock is granted under this Plan, 150 shares shall be counted against the Share Limit in connection with that award.) For this purpose, a "Full-Value Award" means any award under this Plan that isnot a stock option grant or a stock appreciation right grant.

    The following limits also apply with respect to awards granted under this Plan:

      (a)
    (e)
    The maximum number of shares of Common Stock that may be delivered pursuant to options qualified as incentive stock options granted under this Plan is 6,050,0004,000,000 shares.

    (b)
    The maximum number of shares of Common Stock subject to those options and stock appreciation rights that are granted under this Plan during any one calendar year to any one individual is 2,000,000 shares.

    (c)
    The maximum number of shares of Common Stock subject to all awards that are granted under this Plan during any one calendar year to any one individual is 2,000,000 shares.

    (d)
    (f)
    Awards that are granted under this Plan during any one calendar year to any person who, on the grant date of the award, is a non-employee director are subject to the limits of this Section 4.2(d)4.2(f). The maximum number of shares of Common Stock subject to those awards that are granted under this Plan during any one calendar year to an individual who, on the grant date of the award, is a non-employee director is the number of shares that produce a grant date fair value for the award that, when combined with the grant date fair value of any other awards granted under this Plan during that same calendar year to that individual in his or her capacity as a non-employee director, is $400,000; provided that this limit is $600,000 as to (1) a non-employee director who is serving as the Independent Chair of the Board or the Lead Independent Director at the time the applicable grant is made or (2) any new non-employee director for the calendar year in which the non-employee director is first elected or appointed to the Board. For purposes of this Section 4.2(d)4.2(f), a "non-employee director"“non-employee director” is an individual who, on the grant date of the award, is a member of the Board who

        is not then an officer or employee of the Corporation or one of its Subsidiaries. For purposes of this Section 4.2(d)4.2(f), "grant“grant date fair value"value” means the value of the award as of the date of grant of the award and as determined using the equity award valuation principles applied in the Corporation'sCorporation’s financial reporting. The limits of this Section 4.2(d)4.2(f) do not apply to, and shall be determined without taking into account, any award granted to an individual who, on the grant date of the award, is an officer or employee of the Corporation or one of its subsidiaries. The limits of this Section 4.2(d)4.2(f) apply on an individual basis and not on an aggregate basis to all non-employee directors as a group.

      (e)
      Additional limits with respect to Qualified Performance-Based Awards are set forth in Section 5.2.3.

    Each of the foregoing numerical limits is subject to adjustment as contemplated by Section 4.3, Section 7.1, and Section 8.10.

    4.3Awards Settled in Cash, Reissue of Awards and Shares.   Except as provided in the next sentence, shares that are subject to or underlie awards granted under this Plan which expire or for any reason are cancelled or terminated, are forfeited, fail to vest, or for any other reason are not paid or delivered under this Plan shall not be counted against the Share Limit and shall be available for subsequent awards under this Plan. Shares that are exchanged by a participant or withheld by the Corporation as full or partial payment in connection with any award under this Plan, as well as any shares exchanged by a participant or withheld by the Corporation or one of its Subsidiaries to satisfy the tax withholding obligations related to any award, shall be counted against the Share Limit and shall not be available for subsequent awards under this Plan. Any shares of Common Stock repurchased with the proceeds of any option exercise price shall not be available for awards under this Plan. To the extent that shares of Common Stock are delivered pursuant to the exercise

    A-4


    of a stock appreciation right granted under this Plan, the number of underlying shares as to which the exercise related shall be counted against the Share Limit. (For purposes of clarity, if a stock appreciation right relates to 100,000 shares and is exercised at a time when the payment due to the participant is 15,000 shares, 100,000 shares shall be counted against the Share Limit with respect to such exercise. In addition, shares that are exchanged by a participant or withheld by the Corporation after the Stockholder Approval Date as full or partial payment in connection with any award granted under the 2002 Plan or 2006 Plan, as well as any shares exchanged by a participant or withheld by the Corporation or one of its Subsidiaries after the Stockholder Approval Date to satisfy the tax withholding obligations related to any award granted under the 2002 Plan or 2006 Plan, shall not be available for new awards under this Plan. To the extent that an award granted under this Plan is settled in cash or a form other than shares of Common Stock, the shares that would have been delivered had there been no such cash or other settlement shall not be counted against the Share Limit and shall be available for subsequent awards under this Plan. In the event that shares of Common Stock are delivered in respect of a dividend equivalent right granted under this Plan, the number of shares delivered with respect to the award shall be counted against the Share Limit. (For purposes of clarity, if 1,000 dividend equivalent rights are granted and outstanding when the Corporation pays a dividend, and 50 shares are delivered in payment of those rights with respect to that dividend, 75 shares (after giving effect to the Full-Value Award premium counting rules) shall be counted against the Share Limit). Except as otherwise providedThe Company may not increase the Share Limits by repurchasing shares of Common Stock on the Administrator, shares delivered in respectmarket (by using cash received through the exercise of dividend equivalent rights shall not count against any individual award limit under this Plan other than the aggregate Share Limit.stock options or otherwise). Refer to Section 8.10 for application of the foregoing share limits with respect to assumed awards. The foregoing adjustments to the share limits of this Plan are subject to any applicable limitations under Section 162(m) of the Code with respect to awards intended as performance-based compensation thereunder.

    4.4No Fractional Shares; Minimum Issue.   Unless otherwise expressly provided by the Administrator, no fractional shares shall be delivered under this Plan. The Administrator may pay cash in lieu of any fractional shares in settlements of awards under this Plan. The Administrator may from


    time to time impose a limit (of not greater than 100 shares) on the minimum number of shares that may be purchased or exercised as to awards (or any particular award) granted under this Plan unless (as to any particular award) the total number purchased or exercised is the total number at the time available for purchase or exercise under the award.

    5.
    AWARDS

    5.1Type and Form of Awards.   The Administrator shall determine the type or types of award(s) to be made to each selected Eligible Person. Awards may be granted singly, in combination or in tandem. Awards also may be made in combination or in tandem with, in replacement of, as alternatives to, or as the payment form for grants or rights under any other employee or compensation plan of the Corporation or one of its Subsidiaries. The types of awards that may be granted under this Plan are (subject, in each case, to the no repricing provisions of Section 3.2):

      5.1.1

    (a)
    Stock Options.   A stock option is the grant of a right to purchase a specified number of shares of Common Stock during a specified period as determined by the Administrator. An option may be intended as an incentive stock option within the meaning of Section 422 of the Code (an "ISO") or a nonqualified stock option (an option not intended to be an ISO). The award agreement for an option will indicate if the option is intended as an ISO; otherwise it will be deemed to be a nonqualified stock option. The maximum term of each option (ISO or nonqualified) shall be ten (10) years. The per share exercise price for each option shall be not less than 100% of the fair market value of a share of Common Stock on the date of grant of the option. When an option is exercised, the exercise price for the shares to be purchased shall be paid in full in cash or such other method permitted by the Administrator consistent with Section 5.5.

    5.1.25.4.

    (b)
    Additional Rules Applicable to ISOs.   To the extent that the aggregate fair market value (determined at the time of grant of the applicable option) of stock with respect to which ISOs first become exercisable by a participant in any calendar year exceeds $100,000, taking into account both Common Stock subject to ISOs under this Plan and stock subject to ISOs under all other plans of the Corporation or one of its Subsidiaries (or any parent or predecessor corporation to the extent required by and within the meaning of Section 422 of the Code and the regulations promulgated thereunder), such options shall be treated as nonqualified stock options. In reducing the number of options treated as ISOs to meet the $100,000 limit, the most recently granted options shall be reduced first. To the extent a reduction of simultaneously granted options is necessary to meet the $100,000 limit, the Administrator may, in the manner and to the extent permitted by law, designate which shares of Common Stock are to be treated as shares acquired pursuant to the exercise of an ISO. ISOs may only be granted to employees of the Corporation or one of its subsidiaries (for this purpose, the term "subsidiary"“subsidiary” is used as defined in Section 424(f)

    A-5


    of the Code, which generally requires an unbroken chain of ownership of at least 50% of the total combined voting power of all classes of stock of each subsidiary in the chain beginning with the Corporation and ending with the subsidiary in question). No ISO may be granted to any person who, at the time the option is granted, owns (or is deemed to own under Section 424(d) of the Code) shares of outstanding Common Stock possessing more than 10% of the total combined voting power of all classes of stock of the Corporation, unless the exercise price of such option is at least 110% of the fair market value of the stock subject to the option and such option by its terms is not exercisable after the expiration of five years from the date such option is granted. If an otherwise-intended ISO fails to meet the applicable requirements of Section 422 of the Code, the option shall be a nonqualified stock option.


    (c)

      5.1.3

      Stock Appreciation Rights.   A stock appreciation right or "SAR" is a right to receive a payment, in cash and/or Common Stock, equal to the excess of the fair market value of a specified number of shares of Common Stock on the date the SAR is exercised over the "base price" of the award, which base price shall be set forth in the applicable award agreement and shall be not less than 100% of the fair market value of a share of Common Stock on the date of grant of the SAR. The maximum term of a SAR shall be ten (10) years.

      5.1.4

      (d)
      Other Awards; Dividend Equivalent Rights.   The other types of awards that may be granted under this Plan include: (a) stock bonuses, restricted stock, performance stock, stock units, phantom stock or similar rights to purchase or acquire shares, whether at a fixed or variable price (or no price) or fixed or variable ratio related to the Common Stock, and any of which may vest upon the passage of time, the occurrence of one or more events, the satisfaction of performance criteria or other conditions, or any combination thereof; or (b) cash awards. The types of cash awards that may be granted under this Plan include the opportunity to receive a payment for the achievement of one or more goals established by the Administrator, on such terms as the Administrator may provide, as well as cash awards. Dividend equivalent rights may be granted as a separate award or in connection with another award under this Plan; provided, however, that dividend equivalent rights may not be granted as to a stock option or SAR granted under this Plan. In addition, any dividends and/or dividend equivalents as to the unvested portion of a restricted stock award that is subject to performance-based vesting requirements or the unvested portion of a stock unit award that is subject to performance-based vesting requirements will be subject to termination and forfeiture to the same extent as the corresponding portion of the award to which they relate in the event the applicable performance-based vesting requirements are not satisfied.

    5.2Section 162(m) Performance-Based Awards.    Without limiting the generality of the foregoing, In addition, any of the types of awards listed in Section 5.1.4 above may be, and options and SARs granted to officers and employees also may be, granteddividends and/or dividend equivalents as awards intended to satisfy the requirements for "performance-based compensation" within the meaning of Section 162(m) of the Code. An Award (other than an option or SAR) intended by the Administrator to satisfy the requirements for "performance-based compensation" within the meaning of Section 162(m) of the Code is referred to as a "Qualified Performance-Based Award." An option or SAR intended to satisfy the requirements for "performance-based compensation" within the meaning of Section 162(m) of the Code is referred to as a "Qualifying Option or SAR." The grant, vesting, exercisability or payment of Qualified Performance-Based Awards may depend (or, in the case of Qualifying Option or SAR, may also depend) on the degree of achievement of one or more performance goals relative to a pre-established targeted level or levels using one or more of the Business Criteria set forth below (on an absolute or relative (including, without limitation, relative to the performanceportion of one or more other companies or upon comparisons of any of the indicators of performance relativean award that is subject to one or more other companies) basis) for the Corporation on a consolidated basis or for one or more of the Corporation's subsidiaries, segments, divisions or business units, or any combination of the foregoing. Any Qualified Performance-Based Award shallunsatisfied vesting requirements will be subject to all of the following provisions of this Section 5.2,termination and a Qualifying Option or SAR shall be subjectforfeiture to the following provisions of this Section 5.2 only to thesame extent expressly set forth below. Nothing in this Plan, however, requires the Administrator to qualify any award or compensation as "performance-based compensation" under Section 162(m) of the Code.

      5.2.1Class; Administrator.    The eligible class of persons for Qualified Performance-Based Awards under this Section 5.2, as well as for a Qualifying Option or SAR, shall be officers and employees of the Corporation or one of its Subsidiaries. To qualify awards as performance-based under Section 162(m), the Administrator approving Qualified Performance-Based Awards or a Qualifying Option or SAR, or making any certification required pursuant to Section 5.2.4, must constitute a committee consisting solely of two or more outside directors (as this requirement is applied under Section 162(m) of the Code).

      5.2.2Performance Goals.    The specific performance goals for Qualified Performance-Based Awards shall be, on an absolute or relative basis, established based on one or more of the


      following business criteria ("Business Criteria") as selected by the Administrator in its sole discretion: earnings per share, cash flow (which means cash and cash equivalents derived from either net cash flow from operations or net cash flow from operations, financing and investing activities), stock price, total stockholder return, gross revenue, revenue growth, operating income (before or after taxes), net earnings (before or after interest, taxes, depreciation and/or amortization), return on equity or on assets or on net investment, cost containment or reduction, or any combination thereof. To qualify awards as performance-based under Section 162(m), the applicable Business Criterion (or Business Criteria, as the case may be) and specific performance formula, goal or goals ("targets") must be established and approved by the Administrator during the first 90 days of the performance period (and, in the case of performance periods of less than one year, in no event after 25% or more of the performance period has elapsed) and while performance relating to such target(s) remains substantially uncertain within the meaning of Section 162(m) of the Code. The terms of the Qualified Performance-Based Awards may specify the manner, if any, in which performance targets shall be adjusted to mitigate the unbudgeted impact of material, unusual or nonrecurring gains and losses, accounting changes or other items specified by the Administrator at the time of establishing the targets. The applicable performance measurement period may not be less than three months nor more than 10 years.

      5.2.3Form of Payment; Maximum Qualified Performance-Based Award.    Grants or awards under this Section 5.2 may be paid in cash or shares of Common Stock or any combination thereof. Qualifying Option or SAR awards granted to any one participant in any one calendar year shall be subject to the limit set forth in Section 4.2(b). The maximum number of shares of Common Stock which may be subject to Qualified Performance-Based Awards (including Qualified Performance-Based Awards payable in shares of Common Stock and Qualified Performance-Based Awards payable in cash where the amount of cash payable upon or following vestingcorresponding portion of the award is determined with reference to the fair market value of a share of Common Stock at such time) that are granted to any one participant in any one calendar year shall not exceed 2,000,000 shares (counting such shares on a one-for-one basis for this purpose), either individually orwhich they relate in the aggregate, subject to adjustment as provided in Section 7.1. The aggregate amount of compensation to be paid to any one participant in respect of all Qualified Performance-Based Awards payable only in cash (excluding cash awards covered byevent the preceding sentence where the cash payment is determined with reference to the fair market value of a share of Common Stock upon or following theapplicable vesting of the award) and granted torequirements are not satisfied. This ensures that participant in any one calendar year shall not exceed $3,000,000. Awards that are cancelled during the year shall be counted against these limits to the extent required by Section 162(m) of the Code.

      5.2.4Certification of Payment.    Before any Qualified Performance-Based Award is paid and to the extent applicable to qualify the award as performance-based compensation within the meaning of Section 162(m) of the Code, the Administrator must certify in writing that the performance target(s) and any other material terms of the Qualified Performance-Based Award were in fact timely satisfied.

      5.2.5Reservation of Discretion.    The Administrator will have the discretion to determine the restrictions or other limitations of the individual awards granted under this Section 5.2 including the authority to reduce awards, payouts or vesting or to pay no awards, in its sole discretion, if the Administrator preserves such authority atunderlying unvested award is forfeited, the time of grant by language to this effect in its authorizing resolutions dividends and/or otherwise.

      5.2.6Expiration of Grant Authority.    As required pursuant to Section 162(m) ofdividend equivalents on the Code and the regulations promulgated thereunder, the Administrator's authority to grant newunvested awards that are intended to qualify as performance-based compensation within the meaning of Section 162(m) of the Code (other than a Qualifying Option or SAR) shall terminate upon the first meeting of the Corporation's stockholders that occurs in the fifth year following the year in


      which the Corporation's stockholders first approve this Plan, subject to any subsequent extension that maywill also be approved by stockholders.

    5.3forfeited.

    5.2Award Agreements.   Each award shall be evidenced by a written or electronic award agreement or notice in a form approved by the Administrator (an "award agreement"“award agreement”), and, in each case and if required by the Administrator, executed or otherwise electronically accepted by the recipient of the award in such form and manner as the Administrator may require.

    5.4

    5.3Deferrals and Settlements.   Payment of awards may be in the form of cash, Common Stock, other awards or combinations thereof as the Administrator shall determine, and with such restrictions (if any) as it may impose. The Administrator may also require or permit participants to elect to defer the issuance of shares or the settlement of awards in cash under such rules and procedures as it may establish under this Plan. The Administrator may also provide that deferred settlements include the payment or crediting of interest or other earnings on the deferral amounts, or the payment or crediting of dividend equivalents where the deferred amounts are denominated in shares.

    5.5

    5.4Consideration for Common Stock or Awards.   The purchase price (if any) for any award granted under this Plan or the Common Stock to be delivered pursuant to an award, as applicable, may be paid by means of any lawful consideration as determined by the Administrator, including, without limitation, one or a combination of the following methods:


    A-6


    (a)
    services rendered by the recipient of such award;

    (b)
    cash, check payable to the order of the Corporation, or electronic funds transfer;

    (c)
    notice and third partythird-party payment in such manner as may be authorized by the Administrator;

    (d)
    the delivery of previously owned shares of Common Stock;

    (e)
    by a reduction in the number of shares otherwise deliverable pursuant to the award; or

    (f)
    subject to such procedures as the Administrator may adopt, pursuant to a "cashless exercise"“cashless exercise” with a third party who provides financing for the purposes of (or who otherwise facilitates) the purchase or exercise of awards.

    In no event shall any shares newly-issued by the Corporation be issued for less than the minimum lawful consideration for such shares or for consideration other than consideration permitted by applicable state law. The Corporation will not be obligated to deliver any shares unless and until it receives full payment of the exercise or purchase price therefor and any related withholding obligations under Section 8.5 and any other conditions to exercise or purchase have been satisfied. Unless otherwise expressly provided in the applicable award agreement, the Administrator may at any time eliminate or limit a participant'sparticipant’s ability to pay any purchase or exercise price of any award or shares by any method other than cash payment to the Corporation.

    5.6

    5.5Definition of Fair Market Value.   For purposes of this Plan, "fair“fair market value"value” shall mean, unless otherwise determined or provided by the Administrator in the circumstances, the closing price (in regular trading) for a share of Common Stock on the NASDAQ Stock Market (the "Market") for the date in question or, if no sales of Common Stock were reported on the Market on that date, the closing price (in regular trading) for a share of Common Stock on the Market for the next preceding day on which sales of Common Stock were reported on the Market. The Administrator may, however, provide with respect to one or more awards that the fair market value shall equal the closing price (in regular trading) for a share of Common Stock on the Market on the last trading day preceding the date in question or the average of the high and low trading prices of a share of Common Stock on the Market for the date in question or the most recent trading day. If the Common Stock is no longer listed or is no longer actively traded on the Market as of the applicable date, the fair market value of the Common Stock shall be the value as reasonably determined by the Administrator for purposes of


    the award in the circumstances. The Administrator also may adopt a different methodology for determining fair market value with respect to one or more awards if a different methodology is necessary or advisable to secure any intended favorable tax, legal or other treatment for the particular award(s) (for example, and without limitation, the Administrator may provide that fair market value for purposes of one or more awards will be based on an average of closing prices (or the average of high and low daily trading prices) for a specified period preceding the relevant date).

    5.7

    5.6Transfer Restrictions.

      5.7.1

    (a)
    Limitations on Exercise and Transfer.   Unless otherwise expressly provided in (or pursuant to) this Section 5.75.6 or required by applicable law: (a) all awards are non-transferable and shall not be subject in any manner to sale, transfer, anticipation, alienation, assignment, pledge, encumbrance or charge; (b) awards shall be exercised only by the participant; and (c) amounts payable or shares issuable pursuant to any award shall be delivered only to (or for the account of) the participant.

    5.7.2

    (b)
    Exceptions.   The Administrator may permit awards to be exercised by and paid to, or otherwise transferred to, other persons or entities pursuant to such conditions and procedures, including limitations on subsequent transfers, as the Administrator may, in its sole discretion, establish in writing.writing, and any transfer made in accordance with the Corporation’s Award Transfer Policy shall be expressly permitted without further Administrator approval to the same extent as if any award was granted under the 2016 Plan. Any permitted transfer shall be subject to compliance with applicable federal and state securities laws and shall not be for value (other than nominal consideration, settlement of marital property rights, or for interests in an entity in which more than 50% of the voting interests are held by the Eligible Person or by the Eligible Person'sPerson’s family members).

    5.7.3


    A-7


    (c)
    Further Exceptions to Limits on Transfer.   The exercise and transfer restrictions in Section 5.7.15.6(a) shall not apply to:

      (a)
    (i)
    transfers to the Corporation (for example, in connection with the expiration or termination of the award),

    (b)
    (ii)
    the designation of a beneficiary to receive benefits in the event of the participant'sparticipant’s death or, if the participant has died, transfers to or exercise by the participant'sparticipant’s beneficiary, or, in the absence of a validly designated beneficiary, transfers by will or the laws of descent and distribution,

    (c)
    (iii)
    subject to any applicable limitations on ISOs, transfers to a family member (or former family member) pursuant to a domestic relations order if received by the Administrator,

    (d)
    (iv)
    if the participant has suffered a disability, permitted transfers or exercises on behalf of the participant by his or her legal representative, or

    (e)
    (v)
    the authorization by the Administrator of "cashless exercise"“cashless exercise” procedures with third parties who provide financing for the purpose of (or who otherwise facilitate) the exercise of awards consistent with applicable laws and any limitations imposed by the Administrator.

    5.8

    5.7International Awards.   One or more awards may be granted to Eligible Persons who provide services to the Corporation or one of its Subsidiaries outside of the United States. Any awards granted to such persons may be granted pursuant to the terms and conditions of any applicable sub-plans, if any, appended to this Plan and approved by the Administrator from time to time. The awards so granted need not comply with other specific terms of this Plan, provided that stockholder approval of any deviation from the specific terms of this Plan is not required by applicable law or any applicable listing agency.


    6.

    6.     

    EFFECT OF TERMINATION OF EMPLOYMENT OR SERVICE ON AWARDS

    6.1General.   The Administrator shall establish the effect (if any) of a termination of employment or service on the rights and benefits under each award under this Plan and in so doing may make distinctions based upon, inter alia, the cause of termination and type of award. If the participant is not an employee of the Corporation or one of its Subsidiaries, is not a member of the Board, and provides other services to the Corporation or one of its Subsidiaries, the Administrator shall be the sole judge for purposes of this Plan (unless a contract or the award otherwise provides) of whether the participant continues to render services to the Corporation or one of its Subsidiaries and the date, if any, upon which such services shall be deemed to have terminated.

    6.2Events Not Deemed Terminations of Service.   Unless the express policy of the Corporation or one of its Subsidiaries, or the Administrator, otherwise provides, or except as otherwise required by applicable law, the employment relationship shall not be considered terminated in the case of (a) sick leave, (b) military leave, or (c) any other leave of absence authorized by the Corporation or one of its Subsidiaries, or the Administrator; provided that, unless reemployment upon the expiration of such leave is guaranteed by contract or law or the Administrator otherwise provides, such leave is for a period of not more than three months. In the case of any employee of the Corporation or one of its Subsidiaries on an approved leave of absence, continued vesting of the award while on leave from the employ of the Corporation or one of its Subsidiaries may be suspended until the employee returns to service, unless the Administrator otherwise provides or applicable law otherwise requires. In no event shall an award be exercised after the expiration of any applicable maximum term of the award.

    6.3Effect of Change of Subsidiary Status.   For purposes of this Plan and any award, if an entity ceases to be a Subsidiary of the Corporation a termination of employment or service shall be deemed to have occurred with respect to each Eligible Person in respect of such Subsidiary who does not continue as an Eligible Person in respect of the Corporation or another Subsidiary that continues as such after giving effect to the transaction or other event giving rise to the change in status unless the Subsidiary that is sold, spun-off or otherwise divested (or its successor or a direct or indirect parent of such Subsidiary or successor) assumes the Eligible Person'sPerson’s award(s) in connection with such transaction.


    A-8


    7.
    ADJUSTMENTS; ACCELERATION

    7.1Adjustments.
    (a)
    Subject to Section 7.2, upon (or, as may be necessary to effect the adjustment, immediately prior to): any reclassification, recapitalization, stock split (including a stock split in the form of a stock dividend) or reverse stock split; any merger, combination, consolidation, conversion or other reorganization; any spin-off, split-up, or similar extraordinary dividend distribution in respect of the Common Stock; or any exchange of Common Stock or other securities of the Corporation, or any similar, unusual or extraordinary corporate transaction in respect of the Common Stock; then the Administrator shall equitably and proportionately adjust (1) the number and type of shares of Common Stock (or other securities) that thereafter may be made the subject of awards (including the specific share limits, maximums and numbers of shares set forth elsewhere in this Plan), (2) the number, amount and type of shares of Common Stock (or other securities or property) subject to any outstanding awards, (3) the grant, purchase, or exercise price (which term includes the base price of any SAR or similar right) of any outstanding awards, and/or (4) the securities, cash or other property deliverable upon exercise or payment of any outstanding awards, in each case to the extent necessary to preserve (but not increase) the level of incentives intended by this Plan and the then-outstanding awards.

    (b)
    Unless otherwise expressly provided in the applicable award agreement, upon (or, as may be necessary to effect the adjustment, immediately prior to) any event or transaction described in the preceding paragraphSection 7.1(a) or a sale of all or substantially all of the business or assets of the Corporation as


    an entirety, the Administrator shall equitably and proportionately adjust the performance standards applicable to any then-outstanding performance-based awards to the extent necessary to preserve (but not increase) the level of incentives intended by this Plan and the then-outstanding performance-based awards.

    (c)
    It is intended that, if possible, any adjustments contemplated by the preceding two paragraphsSections 7.1(a) or (b) be made in a manner that satisfies applicable U.S. legal, tax (including, without limitation and as applicable in the circumstances, Section 424 of the Code as to ISOs, Section 409A of the Code as to awards intended to comply therewith and not be subject to taxation thereunder, and Section 162(m) of the Code as to any Qualifying Option or SAR and as to Qualified Performance-Based Awards)performance based compensation) and accounting (so as to not trigger any unintended charge to earnings with respect to such adjustment) requirements.

    (d)
    Without limiting the generality of Section 3.3, any good faith determination by the Administrator as to whether an adjustment is required in the circumstances pursuant to this Section 7.1, and the extent and nature of any such adjustment, shall be conclusive and binding on all persons.

    7.2Corporate Transactions—Transactions — Assumption and Termination of Awards.
    (a)
    Upon any event in which the Corporation does not survive, or does not survive as a public company in respect of its Common Stock (including, without limitation, a dissolution, merger, combination, consolidation, conversion, exchange of securities, or other reorganization, or a sale of all or substantially all of the business, stock or assets of the Corporation, in any case in connection with which the Corporation does not survive or does not survive as a public company in respect of its Common Stock), then the Administrator may make provision for a cash payment in settlement of, or for the termination, assumption, substitution or exchange of any or all outstanding awards or the cash, securities or property deliverable to the holder of any or all outstanding awards, based upon, to the extent relevant under the circumstances, the distribution or consideration payable to holders of the Common Stock upon or in respect of such event. Upon the occurrence of any event described in the preceding sentence in connection with which the Administrator has made provision for the award to be terminated (and the Administrator has not made a provision for the substitution, assumption, exchange or other continuation or settlement of the award): (1) unless otherwise provided in the applicable award agreement, each then-outstanding option and SAR shall become fully vested, all shares of restricted stock then outstanding shall fully vest free of restrictions, and each other award granted under this Plan that is then outstanding shall become payable to the holder of such award;award (provided that any awards subject to performance-vesting

    A-9


    requirements shall vest at the “target” performance level unless otherwise provided in the award agreement); and (2) each award shall terminate upon the related event; provided that the holder of an option or SAR shall be given reasonable advance notice of the impending termination and a reasonable opportunity to exercise his or her outstanding vested options and SARs (after giving effect to any accelerated vesting required in the circumstances) in accordance with their terms before the termination of such awards (except that in no case shall more than ten days'days’ notice of the impending termination be required and any acceleration of vesting and any exercise of any portion of an award that is so accelerated may be made contingent upon the actual occurrence of the event).

    (b)
    Without limiting the preceding paragraph,Section 7.2(a), in connection with any event referred to in the preceding paragraphtherein or any change in control event defined in any applicable award agreement, the Administrator may, in its discretion, provide for the accelerated vesting of any award or awards as and to the extent determined by the Administrator in the circumstances.


    (c)
    For purposes of this Section 7.2, an award shall be deemed to have been "assumed"“assumed” if (without limiting other circumstances in which an award is assumed) the award continues after the applicable event, and/or is assumed and continued by the surviving entity following such event (including, without limitation, an entity that, as a result of such event, owns the Corporation or all or substantially all of the Corporation'sCorporation’s assets directly or through one or more subsidiaries (a "Parent")), and confers the right to purchase or receive, as applicable and subject to vesting and the other terms and conditions of the award, for each share of Common Stock subject to the award immediately prior to the event, the consideration (whether cash, shares, or other securities or property) received in the event by the stockholders of the Corporation for each share of Common Stock sold or exchanged in such event (or the consideration received by a majority of the stockholders participating in such event if the stockholders were offered a choice of consideration); provided, however, that if the consideration offered for a share of Common Stock in the event is not solely the ordinary common stock of a successor corporation or a Parent, the Administrator may provide for the consideration to be received upon exercise or payment of the award, for each share subject to the award, to be solely ordinary common stock of the successor corporation or a Parent equal in fair market value to the per share consideration received by the stockholders participating in the event.

    (d)
    The Administrator may adopt such valuation methodologies for outstanding awards as it deems reasonable in the event of a cash or property settlement and, in the case of options, SARs or similar rights, but without limitation on other methodologies, may base such settlement solely upon the excess if any of the per share amount payable upon or in respect of such event over the exercise or base price of the award.

    In the case of an option, SAR or similar right as to which the per share amount payable upon or in respect of such event is less than or equal to the exercise or base price of the award, the Administrator may terminate such award in connection with an event referred to in this Section 7.2 without any payment in respect of such award.

    (e)
    In any of the events referred to in this Section 7.2, the Administrator may take such action contemplated by this Section 7.2 prior to such event (as opposed to on the occurrence of such event) to the extent that the Administrator deems the action necessary to permit the participant to realize the benefits intended to be conveyed with respect to the underlying shares. Without limiting the generality of the foregoing, the Administrator may deem an acceleration and/or termination to occur immediately prior to the applicable event and, in such circumstances, will reinstate the original terms of the award if an event giving rise to an acceleration and/or termination does not occur.

    (f)
    Without limiting the generality of Section 3.3, any good faith determination by the Administrator pursuant to its authority under this Section 7.2 shall be conclusive and binding on all persons.

    7.3Other Acceleration Rules.   The Administrator may override the provisions of Section 7.2 by express provision in the award agreement and may accord any Eligible Person a right to refuse any acceleration, whether pursuant to the award agreement or otherwise, in such circumstances as the Administrator may approve. The portion of any ISO accelerated in connection with an event referred to in

    A-10


    Section 7.2 (or such other circumstances as may trigger accelerated vesting of the award) shall remain exercisable as an ISO only to the extent the applicable $100,000 limitation on ISOs is not exceeded. To the extent exceeded, the accelerated portion of the option shall be exercisable as a nonqualified stock option under the Code.

    8.
    OTHER PROVISIONS

    8.1Compliance with Laws.   This Plan, the granting and vesting of awards under this Plan, the offer, issuance and delivery of shares of Common Stock, and/or the payment of money under this Plan or under awards are subject to compliance with all applicable federal, state, local and foreign laws, rules and regulations (including but not limited to state and federal securities law and federal margin requirements) and to such approvals by any listing, regulatory or governmental authority as may, in the opinion of counsel for the Corporation, be necessary or advisable in connection therewith. The person acquiring any securities under this Plan will, if requested by the Corporation or one of its Subsidiaries, provide such assurances and representations to the Corporation or one of its Subsidiaries as the


    Administrator may deem necessary or desirable to assure compliance with all applicable legal and accounting requirements.

    8.2No Rights to Award.   No person shall have any claim or rights to be granted an award (or additional awards, as the case may be) under this Plan, subject to any express contractual rights (set forth in a document other than this Plan) to the contrary.

    8.3No Employment/Service Contract.   Nothing contained in this Plan (or in any other documents under this Plan or in any award) shall confer upon any Eligible Person or other participant any right to continue in the employ or other service of the Corporation or one of its Subsidiaries, constitute any contract or agreement of employment or other service or affect an employee'semployee’s status as an employee at will, nor shall interfere in any way with the right of the Corporation or one of its Subsidiaries to change a person'sperson’s compensation or other benefits, or to terminate his or her employment or other service, with or without cause. Nothing in this Section 8.3, however, is intended to adversely affect any express independent right of such person under a separate employment or service contract other than an award agreement.

    8.4Plan Not Funded.   Awards payable under this Plan shall be payable in shares or from the general assets of the Corporation, and no special or separate reserve, fund or deposit shall be made to assure payment of such awards. No participant, beneficiary or other person shall have any right, title or interest in any fund or in any specific asset (including shares of Common Stock, except as expressly otherwise provided) of the Corporation or one of its Subsidiaries by reason of any award hereunder. Neither the provisions of this Plan (or of any related documents), nor the creation or adoption of this Plan, nor any action taken pursuant to the provisions of this Plan shall create, or be construed to create, a trust of any kind or a fiduciary relationship between the Corporation or one of its Subsidiaries and any participant, beneficiary or other person. To the extent that a participant, beneficiary or other person acquires a right to receive payment pursuant to any award hereunder, such right shall be no greater than the right of any unsecured general creditor of the Corporation.

    8.5Tax Withholding.   Upon any exercise, vesting, or payment of any award, or upon the disposition of shares of Common Stock acquired pursuant to the exercise of an ISO prior to satisfaction of the holding period requirements of Section 422 of the Code, or upon any other tax withholding event with respect to any award, arrangements satisfactory to the Corporation shall be made to provide for any taxes the Corporation or any of its Subsidiaries may be required or permitted to withhold with respect to such award event or payment. Such arrangements may include (but are not limited to) any one of (or a combination of) the following:

    (a)

    The Corporation or one of its Subsidiaries shall have the right to require the participant (or the participant'sparticipant’s personal representative or beneficiary, as the case may be) to pay or provide for payment of at least the minimum amount of any taxes which the Corporation or one of its Subsidiaries may be required or permitted to withhold with respect to such award event or payment.

    (b)

    The Corporation or one of its Subsidiaries shall have the right to deduct from any amount otherwise payable in cash (whether related to the award or otherwise) to the participant (or the participant'sparticipant’s personal representative or beneficiary, as the case may be) the minimum amount of any taxes

    A-11


    which the Corporation or one of its Subsidiaries may be required or permitted to withhold with respect to such award event or payment.

    (c)

    In any case where a tax is required to be withheld in connection with the delivery of shares of Common Stock under this Plan, the Administrator may in its sole discretion (subject to Section 8.1) require or grant (either at the time of the award or thereafter) to the participant the right to elect, pursuant to such rules and subject to such conditions as the Administrator may establish, that the Corporation reduce the number of shares to be delivered by (or otherwise reacquire) the appropriate number of shares, valued in a consistent manner at their

        fair market value or at the sales price in accordance with authorized procedures for cashless exercises, necessary to satisfy the minimumany applicable withholding obligation on exercise, vesting or payment. In no event shall the shares withheld exceed the minimum whole number of shares required for tax withholding under applicable law.

    8.6Effective Date, Termination and Suspension, Amendments.

      8.6.1

    (a)
    Effective Date.   This Plan is effective as of February 16, 2016,March 27, 2024, the date of its approval by the Board (the "Effective Date"). This Plan shall be submitted for and subject to stockholder approval no later than twelve months after the Effective Date. Unless earlier terminated by the Board and subject to any extension that may be approved by stockholders, this Plan shall terminate at the close of business on the day before the tenth anniversary of the Effective Date. After the termination of this Plan either upon such stated termination date or its earlier termination by the Board, no additional awards may be granted under this Plan, but previously granted awards (and the authority of the Administrator with respect thereto, including the authority to amend such awards) shall remain outstanding in accordance with their applicable terms and conditions and the terms and conditions of this Plan.

    8.6.2

    (b)
    Board Authorization.   The Board may, at any time, terminate or, from time to time, amend, modify or suspend this Plan, in whole or in part. No awards may be granted during any period that the Board suspends this Plan.

    8.6.3

    (c)
    Stockholder Approval.   To the extent then required by applicable law or deemed necessary or advisable by the Board, any amendment to this Plan shall be subject to stockholder approval.

    8.6.4

    (d)
    Amendments to Awards.   Without limiting any other express authority of the Administrator under (but subject to) the express limits of this Plan, the Administrator by agreement or resolution may waive conditions of or limitations on awards to participants that the Administrator in the prior exercise of its discretion has imposed, without the consent of a participant, and (subject to the requirements of Sections 3.2 and 8.6.5)8.6(e)) may make other changes to the terms and conditions of awards. Any amendment or other action that would constitute a repricing of an award is subject to the limitations set forth in Section 3.2.

    8.6.5

    (e)
    Limitations on Amendments to Plan and Awards.   No amendment, suspension or termination of this Plan or amendment of any outstanding award agreement shall, without written consent of the participant, affect in any manner materially adverse to the participant any rights or benefits of the participant or obligations of the Corporation under any award granted under this Plan prior to the effective date of such change. Changes, settlements and other actions contemplated by Section 7 shall not be deemed to constitute changes or amendments for purposes of this Section 8.6.

    8.7Privileges of Stock Ownership.   Except as otherwise expressly authorized by the Administrator, a participant shall not be entitled to any privilege of stock ownership as to any shares of Common Stock not actually delivered to and held of record by the participant. Except as expressly required by Section 7.1 or otherwise expressly provided by the Administrator, no adjustment will be made for dividends or other rights as a stockholder for which a record date is prior to such date of delivery.

    8.8
    Governing Law; Construction; Severability.

      8.8.1

    (a)
    Choice of Law.   This Plan, the awards, all documents evidencing awards and all other related documents shall be governed by, and construed in accordance with the laws of the State of Delaware, notwithstanding any Delaware or other conflict of law provision to the contrary.

    8.8.2


    A-12


    (b)
    Severability.   If a court of competent jurisdiction holds any provision invalid and unenforceable, the remaining provisions of this Plan shall continue in effect.


    8.9Captions.   Captions and headings are given to the sections and subsections of this Plan solely as a convenience to facilitate reference. Such headings shall not be deemed in any way material or relevant to the construction or interpretation of this Plan or any provision thereof.

    8.10Stock-Based Awards in Substitution for Stock Options or Awards Granted by Other Corporation.   Awards may be granted to Eligible Persons in substitution for or in connection with an assumption of employee stock options, SARs, restricted stock or other stock-based awards granted by other entities to persons who are or who will become Eligible Persons in respect of the Corporation or one of its Subsidiaries, in connection with a distribution, merger or other reorganization by or with the granting entity or an affiliated entity, or the acquisition by the Corporation or one of its Subsidiaries, directly or indirectly, of all or a substantial part of the stock or assets of the employing entity. The awards so granted need not comply with other specific terms of this Plan, provided that the awards shall reflect adjustments giving effect to the assumption or substitution consistent with any conversion applicable to the Common Stock (or the securities otherwise subject to the award) in the transaction and any change in the issuer of the security. Any shares that are delivered and any awards that are granted by, or become obligations of, the Corporation, as a result of the assumption by the Corporation of, or in substitution for, outstanding awards previously granted by an acquired company (or previously granted by a predecessor employer (or direct or indirect parent thereof) in the case of persons that become employed by the Corporation or one of its Subsidiaries in connection with a business or asset acquisition or similar transaction) shall not be counted against the Share Limit or other limits on the number of shares available for issuance under this Plan.

    8.11Non-Exclusivity of Plan.   Nothing in this Plan shall limit or be deemed to limit the authority of the Board or the Administrator to grant awards or authorize any other compensation, with or without reference to the Common Stock, under any other plan or authority.

    8.12No Corporate Action Restriction.   The existence of this Plan, the award agreements and the awards granted hereunder shall not limit, affect or restrict in any way the right or power of the Corporation or any Subsidiary (or any of their respective shareholders,stockholders boards of directors or committees thereof, as the case may be) to make or authorize: (a) any adjustment, recapitalization, reorganization or other change in the capital structure or business of the Corporation or any Subsidiary, (b) any merger, amalgamation, consolidation or change in the ownership of the Corporation or any Subsidiary, (c) any issue of bonds, debentures, capital, preferred or prior preference stock ahead of or affecting the capital stock (or the rights thereof) of the Corporation or any Subsidiary, (d) any dissolution or liquidation of the Corporation or any Subsidiary, (e) any sale or transfer of all or any part of the assets or business of the Corporation or any Subsidiary, (f) any other award, grant, or payment of incentives or other compensation under any other plan or authority (or any other action with respect to any benefit, incentive or compensation), or (g) any other corporate act or proceeding by the Corporation or any Subsidiary. No participant, beneficiary or any other person shall have any claim under any award or award agreement against any member of the Board or the Administrator, or the Corporation or any employees, officers or agents of the Corporation or any Subsidiary, as a result of any such action.

    Awards need not be structured so as to be deductible for tax purposes.

    8.13Other Company Benefit and Compensation Programs.   Payments and other benefits received by a participant under an award made pursuant to this Plan shall not be deemed a part of a participant'sparticipant’s compensation for purposes of the determination of benefits under any other employee welfare or benefit plans or arrangements, if any, provided by the Corporation or any Subsidiary, except where the Administrator expressly otherwise provides or authorizes in writing. Awards under this Plan may be made in addition to, in combination with, as alternatives to or in payment of grants, awards or commitments under any other plans, arrangements or authority of the Corporation or its Subsidiaries.

    8.14Clawback Policy.   The awards granted under this Plan are subject to the terms of the Corporation'sCorporation’s recoupment, clawback or similar policy as it may be in effect from time to time, as well


    as any similar provisions of applicable law, any of which could in certain circumstances require repayment or forfeiture of awards or any shares of Common Stock or other cash or property received with respect to the awards (including any value received from a disposition of the shares acquired upon payment of the awards).


    Clean Energy Fuels Corp.

    4675 MacArthur Court, Suite 800

    Newport Beach, CA 92660

    VOTE BY INTERNET - www.proxyvote.com

    Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 P.M. Eastern Time the day before the meeting date. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form.

    ELECTRONIC DELIVERY OF FUTURE PROXY MATERIALS

    If you would like to reduce the costs incurred by our company in mailing proxy materials, you can consent to receiving all future proxy statements, proxy cards and annual reports electronically via e-mail or the Internet. To sign up for electronic delivery, please follow the instructions above to vote using the Internet and, when prompted, indicate that you agree to receive or access proxy materials electronically in future years.

    VOTE BY PHONE - 1-800-690-6903

    Use any touch-tone telephone to transmit your voting instructions up until 11:59 P.M. Eastern Time the day before the meeting date. Have your proxy card in hand when you call and then follow the instructions.

    VOTE BY MAIL

    Mark, sign and date your proxy card and return it in the postage-paid envelope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717.

    TO


    A-13

    [MISSING IMAGE: px_24cleanproxy1pg01-bw.jpg]
    Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) DateTO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS:

    KEEP THIS PORTION FOR YOUR RECORDS

    — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

    DETACH AND RETURN THIS PORTION ONLY

    THIS PORTION FOR YOUR RECORDSTHIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED.

    For

    All

    Withhold

    All

    For All

    Except

    To withhold authority to vote for any individual nominee(s), mark “For All Except” and write the number(s) of the nominee(s) on the line below.

    The Board of Directors recommends you vote

    FOR ALL of the following director nominees:

    o

    o

    o

    1.Election of Directors

    Nominees

    01   Andrew J. Littlefair

    02  Warren I. Mitchell

    03  John S. Herrington

    04  James C. Miller III

    05  James E. O’Connor

    06   Boone Pickens

    07  Stephen A. Scully

    08  Kenneth M. Socha

    09  Vincent C. Taormina

    The Board of Directors recommends you vote FOR proposals 2 and 3.

    For

    Against

    Abstain

    2Ratification of the appointment of KPMG LLP as our independent registered public accounting firm for the fiscal year ending December 31, 2016.

    o

    o

    o

    3Approval of the Clean Energy Fuels Corp. 2016 Performance Incentive Plan.

    o

    o

    o

    NOTE: To transact any other business that may properly come before the Annual Meeting or any adjournment or postponement of the Annual Meeting.

    Yes

    No

    Please indicate if you plan to attend the Annual Meeting

    o

    o

    Authorized Signatures. This section must be completed for your vote to be counted. Date and Sign Below. Please sign exactly as name(s) appear(s) hereon. Joint owners should each sign. When signing as attorney, executor, administrator, corporate officer, trustee, guardian, or custodian, please give full title.

    Signature [PLEASE SIGN WITHIN BOX]

    Date

    Signature (Joint Owners)

    Date

    0000277527_1 R1.0.1.25


    DETACH AND RETURN THIS PORTION ONLYV41062-P053063. To approve, on an advisory, non-binding basis, the compensation of our named executive officers.4. To approve the 2024 Performance Incentive Plan.The Board of Directors recommends you vote FOR proposals 2, 3 and 4.2. To ratify the appointment of KPMG LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2024.NOTE: Such other business as may properly come before the meeting or any adjournment or postponement thereof.! ! !ForAllWithholdAllFor AllExceptFor Against Abstain! ! !! ! !CLEAN ENERGY FUELS CORP. To withhold authority to vote for any individualnominee(s), mark "For All Except" and write thenumber(s) of the nominee(s) on the line below.CLEAN ENERGY FUELS CORP.4675 MACARTHUR COURT, SUITE 800NEWPORT BEACH, CA 9266001) Andrew J. Littlefair02) Stephen A. Scully03) Lizabeth Ardisana04) Karine Boissy-Rousseau05) Patrick J. Ford06) James C. Miller III07) Kenneth M. Socha08) Mathieu Soulas09) Vincent C. Taormina1. To elect nine directors to the Board of DirectorsNominees:The Board of Directors recommends you vote FOR ALLthe director nominees:Authorized Signatures. This section must be completed for your vote to be counted. Date and Sign Below. Please sign exactly as name(s) appear(s) hereon.Joint owners should each sign. When signing as attorney, executor, administrator, corporate officer, trustee, guardian, or custodian, please give full title.! ! !VOTE BY INTERNETBefore The Meeting - Go to www.proxyvote.com or scan the QR Barcode aboveUse the Internet to transmit your voting instructions and for electronic delivery of information.Vote by 11:59 P.M. ET on May 15, 2024. Have your proxy card in hand when you accessthe web site and follow the instructions to obtain your records and to create an electronicvoting instruction form.During The Meeting - Go to www.virtualshareholdermeeting.com/CLNE2024You may attend the meeting via the Internet and vote during the meeting. Have the informationthat is printed in the box marked by the arrow available and follow the instructions.VOTE BY PHONE - 1-800-690-6903Use any touch-tone telephone to transmit your voting instructions. Vote by 11:59 P.M. ET onMay 15, 2024. Have your proxy card in hand when you call and then follow the instructions.VOTE BY MAILMark, sign and date your proxy card and return it in the postage-paid envelope wehave provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way,Edgewood, NY 11717.SCAN TOVIEW MATERIALS & VOTE


    Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting: The Annual Report and Notice & Proxy Statement are available at www.proxyvote.com

    — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

    2016 Proxy-Clean Energy Fuels Corp.

    THIS

    [MISSING IMAGE: px_24cleanproxy1pg02-bw.jpg]
    Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting:The Annual Report and Notice and Proxy Statement are available at www.proxyvote.comV41063-P05306THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTOR

    I hereby appoint Warren I. Mitchell and Andrew J. Littlefair, or either of them, as proxies, with power of substitution to each, to vote all shares of common stock that I am entitled to vote at the annual meeting of stockholders of Clean Energy Fuels Corp. to be held on Thursday, May 26, 2016 at 9:00 a.m. PST, or at any adjournment or postponement thereof, in accordance with the instructions on the reverse side of this card and with the same effect as though I were present in person and voting such shares. My appointed proxies are authorized in their discretion to vote upon such other business as may properly come before the annual meeting or any adjournment or postponement thereof.

    UNLESS A CONTRARY DIRECTION IS INDICATED, THIS PROXY WILL BE VOTED “FOR ALL” NOMINEES FOR DIRECTOR LISTED IN PROPOSAL 1 and “FOR” PROPOSALS 2 AND 3, AND IN THE DISCRETION OF THE APPOINTED PROXIES UPON SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE ANNUAL MEETING. IF SPECIFIC INSTRUCTIONS ARE INDICATED, THIS PROXY WILL BE VOTED IN ACCORDANCE THEREWITH.

    If you vote by phone or Internet, please do not mail your proxy card.

    Thank You For Voting

    (CONTINUED, AND TO BE SIGNED AND DATED ON REVERSE SIDE)

    0000277527_2 R1.0.1.25




    QuickLinks

    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
    PROPOSAL NO. 1 ELECTION OF DIRECTORS
    PROPOSAL NO. 2 RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
    PROPOSAL NO. 3 APPROVAL OF THE BOARD OF DIRECTORSOF CLEAN ENERGY FUELS CORP. 2016 PERFORMANCE INCENTIVE PLAN
    CORPORATE GOVERNANCE
    INFORMATION ABOUT OUR EXECUTIVE OFFICERS
    COMPENSATION DISCUSSIONCORP.I hereby appoint Stephen A. Scully and Andrew J. Littlefair, or either of them, as proxies, with power of substitution to each, to vote all shares of common stock that I am entitled to vote at the Annual Meeting of Stockholders of Clean Energy Fuels Corp. to be held on Thursday, May 16, 2024 at 8:00 am PDT, or at any adjournment or postponement thereof, in accordance with the instructions on the reverse side of this card and with the same effect as though I were present in person and voting such shares. My appointed proxies are authorized in their discretion to vote upon such other business as may properly come before theAnnual Meeting or any adjournment or postponement thereof.UNLESS A CONTRARY DIRECTION IS INDICATED, THIS PROXY WILL BE VOTED "FOR ALL" NOMINEES FOR DIRECTOR LISTED IN PROPOSAL 1 AND ANALYSIS
    COMPENSATION OF EXECUTIVE OFFICERS"FOR" PROPOSALS 2, 3 AND DIRECTORS
    REPORT4, AND IN THE DISCRETION OF THE AUDIT COMMITTEE OFAPPOINTED PROXIES UPON SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE BOARD
    CERTAIN RELATIONSHIPSANNUAL MEETING. IF SPECIFIC INSTRUCTIONS ARE INDICATED, THIS PROXY WILL BE VOTED IN ACCORDANCE THEREWITH.(CONTINUED, AND RELATED PARTY TRANSACTIONS
    OTHER MATTERS
    CLEAN ENERGY FUELS CORP. 2016 PERFORMANCE INCENTIVE PLAN
    TO BE SIGNED AND DATED ON REVERSE SIDE)

    0001368265 4 2023-01-01 2023-12-31