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

Filed by the Registrant  ☒

Filed by a Party other than the Registrant  ☐

Check the appropriate box:

Inogen, Inc.

(Name of Registrant as Specified In Its Charter)

Payment of Filing Fee (Check the appropriate box):

Dear Stockholder:

I am pleased to invite you to attend the Annual Meeting of Stockholders (the “Annual Meeting”) of Inogen, Inc. (“Inogen”), which will be held at our headquarters, located at 326 Bollay Drive, Goleta, California 93117 on May 9, 201910, 2021 at 10:00 a.m. Pacific Time. Doors openTime as a virtual meeting. In light of public health concerns regarding the COVID-19 pandemic, the Annual Meeting will be held in a virtual meeting format only. You will be able to attend the meeting, vote and submit your questions via the Internet at 9:00 a.m. Pacific Time.www.virtualshareholdermeeting.com/INGN2021. You will not be able to attend the virtual Annual Meeting physically in person.

At the Annual Meeting, we will ask you to consider the following proposals:

Our Board of Directors has fixed the close of business on March 15, 201912, 2021 as the record date for the Annual Meeting. Only stockholders of record on March 15, 201912, 2021 are entitled to notice of and to vote at the Annual Meeting. Further information regarding voting rights and the matters to be voted upon is presented in the accompanying proxy statement.

We are pleased to be furnishing proxy materials to stockholders primarily over the Internet for our Annual Meeting. Consequently, most stockholders will not receive paper copies of our proxy materials. We will instead send to our stockholders a Notice of Internet Availability of Proxy Materials. We believe that this process expedites stockholders’ receipt of proxy materials, lowers the costs of our Annual Meeting, and conserves natural resources.

On or about March 26, 201923, 2021 we expect to mail to our stockholders a Notice of Internet Availability of Proxy Materials containing instructions on how to access our proxy statement for our Annual Meeting and our annual report to stockholders (“Annual Report”).  The Notice of Internet Availability of Proxy Materials also includes instructions on how you can vote using the Internet, and how you can request and receive, free of charge, a printed copy of our proxy materials. Our proxy statement and our 20182020 Annual Report can be accessed directly at the following Internet address: http://www.proxyvote.com. All you have to do is enter the control number located on your proxy card. All stockholders who do not receive a Notice of Internet Availability of Proxy Materials will receive a paper copy of the proxy materials by mail.

YOUR VOTE IS IMPORTANT. Whether or not you plan to attend the Annual Meeting of Stockholders, we urge you to submit your vote via the Internet, telephone or mail.

On behalf of the Board of Directors, I would like to express our appreciation for your interest in Inogen.

Sincerely,

Scott Wilkinson

Nabil Shabshab

Chief Executive Officer and President

Goleta, California

March 26, 201923, 2021

The Notice of Internet Availability of Proxy Materials is first being mailed to our stockholders on or about March 26, 2019.23, 2021. The proxy materials are first being posted on http://www.proxyvote.com on or about March 26, 2019.23, 2021.

INOGEN, INC.

326 Bollay301 Coromar Drive

Goleta, CA 93117

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

To Be Held Virtually on May 10, 2021 at 10:00 a.m. Pacific Time

Important Notice Regarding the Availability of Proxy Materials for the virtual Annual Meeting to Be Held on May 9, 2019.10, 2021. The notice of annual meeting, proxy statement, proxy card, and Annual Report are available by visiting http://www.proxyvote.com.  All you have to do is enter the control number located on your proxy card.

By order of the Board of Directors,

Alison Bauerlein

Corporate Secretary

Goleta, California

March 26, 201923, 2021

The Notice of Internet Availability of Proxy Materials is first being mailed to our stockholders on or about March 26, 2019.23, 2021. The proxy materials are first being posted on http://www.proxyvote.com  on or about March 26, 2019.23, 2021.

TABLE OF CONTENTS

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INOGEN, INC.

326 Bollay301 Coromar Drive

Goleta, California 93117

PROXY STATEMENT

FOR 20192021 ANNUAL MEETING OF STOCKHOLDERS

To Be Held Virtually at 10:00 a.m. Pacific Time on May 9, 201910, 2021

This proxy statement and the accompanying form of proxy are furnished in connection with the solicitation of proxies by our Board of Directors (the “Board”) of Inogen, Inc. (“Inogen” or the “Company”) for use at our 20192021 Annual Meeting of Stockholders, (the “Annual Meeting”), and any postponements, adjournments or continuations thereof.thereof (the “Annual Meeting”).  The Annual Meeting will be held virtually via live webcast on Thursday,the Internet at www.virtualshareholdermeeting.com/INGN2021 on Monday May 9, 201910, 2021 at 10:00 a.m. Pacific Time as a virtual meeting. In light of public health concerns regarding the COVID-19 pandemic, the Annual Meeting will be held in a virtual meeting format only. You will not be able to attend the Annual Meeting physically in person.  The live webcast of the Annual Meeting can be accessed by stockholders on the day of the meeting at our headquarters, located at 326 Bollay Drive, Goleta, California 93117.www.virtualshareholdermeeting.com/INGN2021.  On or about March 26, 2019,23, 2021, we expect to mail to our stockholders a Notice of Internet Availability of Proxy Materials (the “Notice”) containing instructions on how to access our proxy statement for our Annual Meeting and our annual report to stockholders (“Annual Report”).  Information contained on, or that can be accessed through, our website is not intended to be incorporated by reference into this proxy statement and references to our website address in this proxy statement are inactive textual references only.

QUESTIONS AND ANSWERS ABOUT THE ANNUAL MEETING

The information provided in the “question and answer” format below addresses certain frequently asked questions but is not intended to be a summary of all matters contained in this proxy statement.  Please read the entire proxy statement carefully before voting your shares.

What is a proxy?

A proxy is your legal designation of another person to vote the stock you own.  The person you designate is your “proxy,” and you give the proxy authority to vote your shares by submitting the accompanying proxy card or voting by telephone or over the Internet.  We have designated our Chief Executive Officer and President, Scott Wilkinson,Nabil Shabshab, and our Executive Vice President, Finance, Chief Financial Officer, Corporate Secretary, and Corporate Treasurer, Alison Bauerlein, to serve as proxies for the Annual Meeting.

Why am I receiving these materials?

The Board of Inogen is providing these proxy materials to you in connection with the Board’s solicitation of proxies for use at the virtual Annual Meeting (and at any adjournment or postponement of such meeting), which will take place virtually via the Internet on May 9, 2019.10, 2021.  Stockholders are invited to attend the virtual Annual Meeting and are requested to vote on the proposals described in this proxy statement.  This proxy statement and the accompanying proxy card are being made available on or about March 26, 201923, 2021 in connection with the solicitation of proxies on behalf of the Board.

How do I get electronic access to the proxy materials?

The notice of annual meeting, proxy statement, and Annual Report are available by visiting www.proxyvote.com and typing in the control number as set forth (i) on the proxy card (for stockholders of record), or (ii) on the voting instruction form (for individuals who hold shares through a broker, bank, trustee, or nominee).

What information is contained in these materials?

The information included in this proxy statement relates to the proposals to be voted on at the Annual Meeting, the voting process, the compensation of our most highly paid executive officers and our directors, and certain other required

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information.  Inogen’s Annual Report, which includes our audited financial statements, is being made available along with this proxy statement.

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What proposals will be voted on at the Annual Meeting?

The proposals scheduled to be voted on at the Annual Meeting include:

How does our Board recommend that I vote?

Our Board recommends that you vote:

Will there be any other items of business on the agenda?

If any other items of business or other matters are properly brought before the Annual Meeting, your proxy gives discretionary authority to the persons named on the proxy card with respect to those items of business or other matters. The persons named on the proxy card intend to vote the proxy in accordance with their best judgment. Our Board does not intend to bring any other matters to be voted on at the Annual Meeting, and we are not currently aware of any matters that may be properly presented by others for consideration at the Annual Meeting.

Who is entitled to vote at the Annual Meeting?

Holders of our common stock at the close of business on March 15, 2019,12, 2021, the record date for the Annual Meeting (the “Record Date”), are entitled to notice of and to vote at the Annual Meeting.  Each stockholder is entitled to one vote for each share of our common stock held as of the Record Date. As of the Record Date, there were 21,929,23822,326,169 shares of common stock outstanding and entitled to vote.  Stockholders are not permitted to cumulate votes with respect to the election of directors. The shares you are entitled to vote include shares that are (1) held of record directly in your name, and (2) held for you as the beneficial owner through a stockbroker, bank or other nominee.

What is the difference between holding shares as a stockholder of record and as a beneficial owner?

Stockholder of Record: Shares Registered in Your Name.  If, at the close of business on the Record Date, your shares were registered directly in your name with Computershare Trust Company, N.A., our transfer agent, then you are considered the stockholder of record with respect to those shares.  As the stockholder of record, you have the right to grant your voting proxy directly to the individuals listed on the proxy card or to vote in personvirtually at the Annual Meeting.

Beneficial Owners: Shares Registered in the Name of a Broker, Bank or Other Nominee.  If, at the close of business on the Record Date, your shares were held, not in your name, but rather in a stock brokerage account or by a bank or other nominee on your behalf, then you are considered the beneficial owner of shares held in “street name.” As the beneficial

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owner, you have the right to direct your broker, bank or other nominee how to vote your shares by following the voting instructions your broker, bank or other nominee provides.  If you do not provide your broker, bank or other nominee with instructions on how to vote your shares, your broker, bank or other nominee may, in its discretion, vote your shares with respect to routine matters but may not vote your shares with respect to any non-routine matters.  Please see “What if I do not specify how my shares are to be voted?” below for additional information.

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Do I have to do anything in advance if I plan to attend the virtual Annual Meeting in person?Meeting?

Stockholder of Record: Shares Registered in Your Name.  If you were a stockholder of record at the close of business on the Record Date, you do not need to do anything in advance to attend and/or vote your shares in person at the Annual Meeting, but you will need to present government-issued photo identification for entrance to thevirtual Annual Meeting.

Beneficial Owners: Shares Registered in the Name of a Broker, Bank or Other Nominee.  If you were a beneficial owner at the close of business on the Record Date, you may not vote your shares in person at the virtual Annual Meeting unless you obtain a “legal proxy” from your broker, bank or other nominee who is the stockholder of record with respect to your shares.  You may still attend the Annual Meeting even if you do not have a legal proxy.  For entrance

To access, participate in, and vote at the virtual Annual Meeting at www.virtualshareholdermeeting.com/INGN2021, you must enter the 16-digit control number found on your proxy card, voting instruction form or notice that you previously received or, if you were a beneficial owner at the close of business on the Record Date, located in the proxy materials you receive from your broker. If you encounter any difficulties accessing the virtual meeting during the check-in or meeting time, please call the technical support number that will be posted on the login page for the Annual Meeting.  A list of stockholders entitled to vote at the Annual Meeting you will need to provide proof of beneficial ownership asbe available during the entirety of the Record Date, such as the notice or voting instructions you received from your broker, bank or other nominee or a brokerage statement reflecting your ownership of shares as of the Record Date, and also present government-issued photo identification.

Please note that no cameras, recording equipment, large bags, briefcases or packages will be permittedmeeting at the meeting website. After successfully entering your 16-digit control number, you may vote during the Annual Meeting.Meeting and submit questions by following the instructions available on the meeting website. 

How can I contact Inogen’s transfer agent?

You may contact our transfer agent by writing Computershare Investor Services, P.O. Box 505000, Louisville, KY 40233, by telephoning (877) 373-6374 or (781) 575-2879575-3100 (International), or via its Investor Center at www.computershare.com/investor.

WillWhy is the Annual Meeting being held virtually?

Due to the public health impact of the COVID-19 pandemic and to support the health and well-being of our employees, stockholders and other meeting participants, the 2021 Annual Meeting will be webcast?

We doheld as a virtual meeting format only. You will not expectbe able to webcastattend the Annual Meeting.Meeting physically in person.  The live webcast of the Annual Meeting can be accessed by stockholders on the day of the meeting at www.virtualshareholdermeeting.com/INGN2021.

How do I vote and what are the voting deadlines?

Stockholder of Record: Shares Registered in Your Name.  If you are a stockholder of record, you can vote in one of the following ways:

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Beneficial Owners: Shares Registered in the Name of a Broker, Bank or Other Nominee.  If you are the beneficial owner of shares held of record by a broker, bank or other nominee, you will receive voting instructions from your broker, bank or other nominee.  You must follow the voting instructions provided by your broker, bank or other nominee in order to instruct your broker, bank or other nominee how to vote your shares.  The availability of Internet and telephone voting options will depend on the voting process of your broker, bank or other nominee.  As discussed above, if you are a beneficial owner, you may not vote your shares in personvirtually at the Annual Meeting unless you obtain a legal proxy from your broker, bank or other nominee.  

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Can I change my vote or revoke my proxy?

Stockholder of Record: Shares Registered in Your Name.  If you are a stockholder of record, you may revoke your proxy or change your proxy instructions at any time before the Annual Meeting by:

Attendance at the Annual Meeting will not cause your previously granted proxy to be revoked unless you specifically so request or vote in personvirtually at the Annual Meeting.

Beneficial Owners: Shares Registered in the Name of a Broker, Bank or Other Nominee.  If you are the beneficial owner of your shares, you must contact the broker, bank or other nominee holding your shares and follow their instructions to change your vote or revoke your proxy.

Is there a list of stockholders entitled to vote at the Annual Meeting?

The names of stockholders of record entitled to vote at the Annual Meeting will be available at the virtual Annual Meeting and for ten days prior to the meeting for any purpose germane to the meeting, between the hours of 9:00 a.m. and 4:30 p.m., at our corporate headquarters at 326 Bollay301 Coromar Drive, Goleta, CA 93117, by contacting our Corporate Secretary.

What is the effect of giving a proxy?

Proxies are solicited by and on behalf of our Board.  The persons named in the proxy have been designated as proxy holders by our Board.  When a proxy is properly dated, executed and returned, the shares represented by the proxy will be voted at the Annual Meeting in accordance with the instructions of the stockholder.  If no specific instructions are given, however, the shares will be voted in accordance with the recommendations of our Board.  If any matters not described in this proxy statement are properly presented at the Annual Meeting, the proxy holders will use their own judgment to determine how to vote your shares.  If the Annual Meeting is postponed or adjourned, the proxy holders can vote your shares on the new meeting date, unless you have properly revoked your proxy, as described above.

What if I do not specify how my shares are to be voted?

Stockholder of Record: Shares Registered in Your Name.  If you are a stockholder of record and you submit a proxy but you do not provide voting instructions, your shares will be voted:

FOR the election of each of the three directors nominated by our Board and named in this proxy statement as Class III directors to serve for a three-year term (Proposal No. 1);

FOR the ratification of the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for our fiscal year ending December 31, 20192021 (Proposal No. 2); and

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FOR the approval, on an advisory and non-binding basis, of executive compensation for our fiscal year ended December 31, 20182020 as described in this proxy statement (Proposal No. 3).; and

In the discretion of the named proxy holders regarding any other matters properly presented for a vote at the Annual Meeting.

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Beneficial Owners: Shares Registered in the Name of a Broker, Bank or Other Nominee.  If you are a beneficial owner and you do not provide your broker, bank or other nominee that holds your shares with voting instructions, then your broker, bank or other nominee will determine if it has discretion to vote on each matter.  Brokers do not have discretion to vote on non-routine matters.  Proposal No. 1 (election of directors) and Proposal No. 3 (advisory vote to approve executiveNamed Executive Officer (“NEO”) compensation) are non-routine matters, while Proposal No. 2 (ratification of appointment of independent registered public accounting firm) is a routine matter.  As a result, if you do not provide voting instructions to your broker, bank or other nominee, then your broker, bank or other nominee may not vote your shares with respect to Proposal No. 1 or Proposal No. 3, which would result in a “broker non-vote” on each such proposal, but may, in its discretion, vote your shares with respect to Proposal No. 2.  For additional information regarding broker non-votes, see “What are the effects of abstentions and broker non-votes?” below.

What is a quorum?

A quorum is the minimum number of shares required to be present at the Annual Meeting for the meeting to be properly held under our bylaws and Delaware law.  The holders of a majority of the common stock issued and outstanding and entitled to vote, present in personvirtually or represented by proxy, constitutes a quorum for the transaction of business at the Annual Meeting.  As noted above, as of the Record Date, there were a total of 21,929,23822,326,169 shares of common stock outstanding, which means that 10,964,62011,163,085 shares of common stock must be represented in personvirtually or by proxy at the Annual Meeting to have a quorum.  If there is no quorum, (i) the chairperson of the Annual Meeting or (ii) the stockholders entitled to vote at the Annual Meeting, present virtually in person or represented by proxy, may adjourn the meeting to a later date.

What are the effects of abstentions and broker non-votes?

An abstention represents a stockholder’s affirmative choice to decline to vote on a proposal.  If a stockholder indicates on its proxy card that it wishes to abstain from voting its shares, or if a broker, bank or other nominee holding its customers’ shares of record causes abstentions to be recorded for shares, these shares will be considered present and entitled to vote at the Annual Meeting.  As a result, abstentions will be counted for purposes of determining the presence or absence of a quorum and will also count as votes against a proposal in cases where approval of the proposal requires the affirmative vote of a majority of the shares present virtually in person or represented by proxy and entitled to vote at the Annual Meeting (e.g., Proposal No. 2 and Proposal No. 3).  However, because the outcome of Proposal No. 1 (election of directors) will be determined by a plurality vote, abstentions will have no impact on the outcome of such proposals as long as a quorum exists.

A broker non-vote occurs when a broker, bank or other nominee holding shares for a beneficial owner does not vote on a particular proposal because the broker, bank or other nominee does not have discretionary voting power with respect to such proposal and has not received voting instructions from the beneficial owner of the shares.  Broker non-votes will be counted for purposes of calculating whether a quorum is present at the Annual Meeting but will not be counted for purposes of determining the number of votes cast.  Therefore, a broker non-vote will make a quorum more readily attainable but will not otherwise affect the outcome of the vote on any proposal.

How many votes are needed for approval of each proposal?

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How may my brokerage firm or other intermediary vote my shares if I fail to provide timely directions?

Brokerage firms and other intermediaries holding shares of common stock in street name for customers are generally required to vote such shares in the manner directed by their customers.  In the absence of timely directions, your broker will have discretion to vote your shares on our sole “routine” matter — the proposal to ratify the appointment of Deloitte & Touche LLP.  Absent direction from you, your broker will not have discretion to vote on the election of directors or on the advisory vote regarding named executive officer compensation.

Who will count the votes?

A representative from Broadridge Financial Solutions, Inc. will tabulate the votes and act as inspector of elections.

Why did I receive a Notice of Internet Availability of Proxy Materials instead of a full set of proxy materials?

In accordance with the rules of the Securities and Exchange Commission (“SEC”), we have elected to furnish our proxy materials, including this proxy statement and our Annual Report, primarily via the Internet. The Notice containing instructions on how to access our proxy materials is first being mailed on or about March 26, 201923, 2021 to all stockholders entitled to vote at the Annual Meeting. Stockholders may request to receive all future proxy materials in printed form by mail or electronically by e-mail by following the instructions contained in the Notice. We encourage stockholders to take advantage of the availability of our proxy materials on the Internet to help reduce the environmental impact of our annual meetings of stockholders.

How are proxies solicited for the Annual Meeting and who is paying for such solicitation?

Our Board is soliciting proxies for use at the Annual Meeting by means of the proxy materials.  We will bear the entire cost of proxy solicitation, including the preparation, assembly, printing, mailing and distribution of the proxy materials.  Copies of solicitation materials will also be made available upon request to brokers, banks and other nominees to forward to the beneficial owners of the shares held of record by such brokers, banks or other nominees.  The original solicitation of proxies may be supplemented by solicitation by telephone, electronic communication, or other means by our directors, officers, employees or agents.  No additional compensation will be paid to these individuals for any such services, although we may reimburse such individuals for their reasonable out-of-pocket expenses in connection with such solicitation.  We do not plan to retain a proxy solicitor to assist in the solicitation of proxies.

If you choose to access the proxy materials and/or vote over the Internet, you are responsible for Internet access charges you may incur.  If you choose to vote by telephone, you are responsible for telephone charges you may incur.

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What does it mean if I received more than one Notice?

If you receive more than one Notice, your shares may be registered in more than one name or in different accounts.  Please follow the voting instructions on each Notice to ensure that all of your shares are voted.

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Will members of the Board attend the Annual Meeting?

We encourage, but do not require, the members of our Board to attend the virtual Annual Meeting. Those who do attend will be available to answer appropriate questions from stockholders.

Is my vote confidential?

Proxy instructions, ballots and voting tabulations that identify individual stockholders are handled in a manner that protects your voting privacy.  Your vote will not be disclosed either within Inogen or to third parties, except as necessary to meet applicable legal requirements, to allow for the tabulation of votes and certification of the vote, or to facilitate a successful proxy solicitation.

I share an address with another stockholder, and we received only one paper copy of the proxy materials.  How may I obtain an additional copy of the proxy materials?

We have adopted an SEC-approved procedure called “householding,” under which we can deliver a single copy of the Notice and, if applicable, the proxy materials to multiple stockholders who share the same address unless we received contrary instructions from one or more of the stockholders.  This procedure reduces our printing and mailing costs.  Stockholders who participate in householding will continue to be able to access and receive separate proxy cards.  Upon written or oral request, we will promptly deliver a separate copy of the Notice and, if applicable, the proxy materials to any stockholder at a shared address to which we delivered a single copy of any of these documents.  To receive a separate copy, or, if you are receiving multiple copies, to request that we only send a single copy of next year’s Notice and, if applicable, proxy materials, you may contact us as follows:

Inogen, Inc.

Attention: Corporate Secretary

326 Bollay301 Coromar Drive

Goleta, CA  93117

(805) 562-0500

Stockholders who hold shares in street name may contact their brokerage firm, bank, broker-dealer or other nominee to request information about householding.

How can I find out the results of the voting at the Annual Meeting?

Preliminary voting results will be announced at the Annual Meeting.  In addition, final voting results will be published in a current report on Form 8-K that we expect to file within four business days after the Annual Meeting.  If final voting results are not available to us at that time, we intend to file a Form 8-K to publish preliminary results and, within four business days after the final results are known to us, file an amendment to the Form 8-K to publish the final results.

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What is the deadline to propose actions for consideration at next year’s Annual Meeting of Stockholders or to nominate individuals to serve as directors?

Stockholder Proposals

Stockholders may present proper proposals for inclusion in our proxy statement and for consideration at the next Annual Meeting of Stockholders by submitting their proposals in writing to our Corporate Secretary in a timely manner.  For a stockholder proposal to be considered for inclusion in our proxy statement for our 20202022 Annual Meeting of Stockholders, our Corporate Secretary must receive the written proposal at our principal executive offices not later than November 27, 2019.23, 2021.  In addition, stockholder proposals must comply with the requirements of Rule 14a-8 under the Securities Exchange Act of 1934, as amended, or the Exchange Act, regarding the inclusion of stockholder proposals in company-sponsored proxy materials.  Stockholder proposals should be addressed to:

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Inogen, Inc.

Attention: Corporate Secretary

326 Bollay301 Coromar Drive

Goleta, CA  93117

Our bylaws also establish an advance notice procedure for stockholders who wish to present a proposal before an Annual Meeting of Stockholders but do not intend for the proposal to be included in our proxy statement.  Our bylaws provide that the only business that may be conducted at an Annual Meeting is business that is (i) specified in our proxy materials with respect to such meeting, (ii) otherwise properly brought before the Annual Meeting by or at the direction of our Board, or (iii) properly brought before the Annual Meeting by a stockholder of record entitled to vote at the Annual Meeting who has delivered timely written notice to our Corporate Secretary, which notice must contain the information specified in our bylaws.  To be timely for our 20202022 Annual Meeting of Stockholders, our Corporate Secretary must receive the written notice at our principal executive offices:

In the event that we hold our 20202022 Annual Meeting of Stockholders more than 30 days before or more than 60 days after the first anniversary of the date of the 20192021 Annual Meeting, then notice of a stockholder proposal that is not intended to be included in our proxy statement must be received no earlier than the close of business on the 120th day before such Annual Meeting and no later than the close of business on the later of the following two dates:

If a stockholder who has notified us of his, her or its intention to present a proposal at an Annual Meeting does not appear to present his, her or its proposal at such Annual Meeting, we are not required to present the proposal for a vote at such Annual Meeting.

Nomination of Director Candidates

You may propose director candidates for consideration by our Compensation, Nominating and Governance Committee.  Any such recommendations should include the nominee’s name and qualifications for membership on our Board and should be directed to our Corporate Secretary at the address set forth above.  For additional information regarding stockholder recommendations for director candidates, see “Board of Directors and Corporate Governance—Stockholder Recommendations for Nominations to the Board.”

In addition, our bylaws permit stockholders to nominate directors for election at an Annual Meeting of Stockholders.  To nominate a director, the stockholder must provide the information required by our bylaws.  In addition, the stockholder must give timely notice to our Corporate Secretary in accordance with our bylaws, which, in general, require that the notice be received by our Corporate Secretary within the time period described above under “Stockholder Proposals” for stockholder proposals that are not intended to be included in a proxy statement.

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Availability of Bylaws

A copy of our bylaws may be obtained by accessing our public filings on the SEC’s website at www.sec.gov.  You may also contact our Corporate Secretary at our principal executive office for a copy of the relevant bylaw provisions regarding the requirements for making stockholder proposals and nominating director candidates.

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BOARD OF DIRECTORS AND CORPORATE GOVERNANCE

Our business affairs are managed under the direction of our Board, which is currently comprised of eight members.  SixSeven of our eight directors are independent within the meaning of the independent director requirements of the NASDAQ Global Select Market.  Our Board is divided into three classes with staggered three-year terms.  At each Annual Meeting of Stockholders, a class of directors will be elected for a three-year term to succeed the same class whose term is then expiring.

The following table sets forth the names and ages as of March 15, 201912, 2021 and certain other information for each of the directors with terms expiring at the Annual Meeting (who are also nominees for election as a director at the Annual Meeting) and for each of the continuing directors:

(3)  Member of our Nominating and Governance Committee

Nominees for Director

Loren McFarland has served as a Member of our Board since 2013.  He has been President and Managing Member of Santa Barbara Financial Services, LLC since 2008.  Prior to founding Santa Barbara Financial Services, he served as the Chief Financial Officer and Treasurer of Mentor Corporation, a medical equipment company, from 2004 to 2007.  Prior to that, Mr. McFarland fulfilled various finance and accounting roles at Mentor from 1985 to 2004.  He worked as a Certified Public Accountant and Audit Supervisor with Touche Ross & Co., an accounting firm, from 1981 to 1985 and served in the North Dakota Army National Guard from 1978 to 1984.  He currently serves on the Board of Directors and as the Chief Financial Officer of Cure Medical, LLC, a privately held manufacturer of disposable urology products, on the Board of Directors of the MIT Enterprise Forum of the Central Coast and chairs the parish finance council for St. Mark’s University Parish, Isla Vista, CA.  Previously, Mr. McFarland served on the Board of Directors of Patient Safety Technologies, Inc., an acquired publicly-traded medical device company, as the Financial Expert on the Audit Committee and as a Member of the Compensation, Nominating and Governance Committee.  Mr. McFarland has a Bachelor of Arts degree in Accounting from the University of North Dakota and an M.B.A. from the University of California, Los Angeles.  He completed an ISS Director Certification Program in October 2008 at the University of California, Los Angeles’ Anderson School.  The Board believes that he is qualified to serve as a director of Inogen because of his leadership experience and his extensive experience in finance and accounting.

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Benjamin Anderson-Rayhas served as a Member of our Board since 2013.  He has been a Partner and Advisor with Trinitas Advisors, a consulting firm, since 2009.  Prior to joining Trinitas Advisors, he served as the Chief Executive Officer of three manufacturing companies: Hubbardton Forge, LLC from 2008 to 2009, Chromcraft Revington, Inc. from 2005 to 2008 and Gravograph New Hermes from 2002 to 2004.  Prior to that, Mr. Anderson-Ray held various senior leadership roles at Sunrise Medical, Inc., a global manufacturer and distributor of durable medical equipment, including President of the Global Business Group in 2001, President of the Continuing Care Group from 1998 to 2000, and President of the Mobility Products Division from 1996 to 2001.  Earlier in his career, Mr. Anderson-Ray held management and marketing roles at GE Lighting, a lighting solutions company, from 1984 to 1993, Black & Decker Home Products, a product manufacturing company, from 1993 to 1994, and Rubbermaid Home Products, a manufacturer and distributor of household items, from 1994 to 1996.  He currently serves on the Board of Directors of Sommetrics, Inc. Mr. Anderson-Ray has Bachelor of Art and Science degrees in Marketing and Horticulture from Michigan State University and an M.B.A. from the University of Michigan.  The Board believes that he is qualified to serve as a director of Inogen because of his leadership experience and his extensive industry experience.

Scott Wilkinson has served as our Chief Executive Officer and President since March 1, 2017, and a Member of our Board since January 1, 2017.  Previously, he served as our President and Chief Operating Officer from January 1, 2016 through February 28, 2017, and our Executive Vice President, Sales and Marketing from 2008 through December 31, 2015, and in this role he oversaw Inogen’s global operations in sales, marketing, customer service, product management, medical billing, and clinical services.  Prior to that, he served as our Director of Product Management from 2005 to 2006 and Vice President, Product Management from 2006 to 2008.  From 2000 to 2005, Mr. Wilkinson worked for Invacare Corporation, a designer and manufacturer of oxygen products, as a Group Product Manager and helped launch their $100 million oxygen product line segment.  From 1999 to 2000, Mr. Wilkinson served as a Product Line Director with Johnson & Johnson, a healthcare company.  From 1988 to 1999, Mr. Wilkinson worked as a Research Scientist, Product Manager, and Project Leader at Kimberly Clark, a consumer products company.  Mr. Wilkinson received a Bachelor of Science degree in Chemical Engineering from the University of Akron and an M.B.A. from University of Wisconsin, Oshkosh.  The Board believes that he is qualified to serve as a director of Inogen due to his considerable knowledge and understanding of our business together with his extensive industry experience.

Continuing Directors

Heath Lukatch, Ph.D. has served as Chairperson of our Board since 2008, and as a director since 2006.  Dr. Lukatch is employed as a Partner and Managing Director at TPG Biotech. Dr. Lukatch joined TPG Biotech in 2015. Prior to joining TPG Biotech, Dr. Lukatch was a Partner at Novo Ventures (US) Inc., which provides certain consultancy services to Novo Holdings A/S. Dr. Lukatch joined Novo Ventures (US) Inc. in 2006.  From 2001 to 2006, Dr. Lukatch was a Managing Director responsible for biotechnology venture investments at Piper Jaffray Ventures and SightLine Partners, a private equity firm and spin off of Piper Jaffray Ventures.  Prior to joining Piper Jaffray Ventures, Dr. Lukatch worked as a strategy consultant with McKinsey & Company, a consulting firm, from 1997 to 2000.  Dr. Lukatch also served as co-founder and Chief Executive Officer of AutoMate Scientific, a biotechnology instrumentation company from 1991 to 1997, and held scientific positions with Chiron Corporation, a biotechnology company, from 1990 to 1991, Roche Bioscience, a healthcare company, from 1996 to 1997, and Cetus Corporation, a biotechnology company, in 1987.  He currently serves on the Boards of Directors of Adynxx, Ceribell, Engage Therapeutics, Flexion Therapeutics, Inc. (FLXN), Halo Neuroscience, Satsuma Pharma, SutroVax, Viacyte and ViewPoint Therapeutics. Dr. Lukatch received his Ph.D. in Neuroscience from Stanford University where he was a DOD USAF Fellow, and his Bachelor of Arts in Biochemistry from the University of California at Berkeley.  The Board believes that he is qualified to serve as a director of Inogen because of his extensive industry experience and experience as a venture capital investor and a board member for several venture-backed healthcare companies.

Raymond Huggenberger has served as a Member of our Board since 2008.  Mr. Huggenberger previously served as our Chief Executive Officer from 2008 until March 1, 2017 and as our President from 2008 until January 1, 2016.  Prior to joining our company, Mr. Huggenberger held various management positions with Sunrise Medical Inc., a global manufacturer and distributor of durable medical equipment, including: Vice President of Marketing for Sunrise’s German subsidiary from 1994 to 1996, President of Sunrise’s German division from 1998 until 2000, President of the European Operating Group from 2000 to 2002, President and Chief Operating Officer from 2002 until 2004, and President of European Operations 2006 to 2007.  Mr. Huggenberger also held a consultant position with McDermott and Bull Inc., an

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executive search firm, from 2005 to 2006 and the position of Managing Director in the healthcare division of TA Triumph Adler AG, a document process management firm, from 1996 to 1998.  Mr. Huggenberger currently serves on the Board of Directors of Wellfount Corporation, a pharmacy services company. He also serves on the Board of Directors of Tactile Systems Technology Inc., a publicly-traded company (TCMD), Clarify Medical Inc., Ebb Therapeutics, and Sommetrics, Inc., which are all medical device companies. Mr. Huggenberger graduated from AKAD University in Rendsburg, Germany in Economics and completed the Advanced Marketing Strategies Program at INSEAD, Fontainebleau, France.  The Board believes that he is qualified to serve as a director of Inogen because of his deep understanding of our business, operations and strategy and extensive executive and director roles with healthcare companies.

R. Scott Greer has served as a Member of our Board since August 2015 and Chairperson of the Audit Committee since January 1, 2018. Since June 2003, Mr. Greer has served as Managing Director of Numenor Ventures, LLC, a venture capital firm. In 1996, Mr. Greer co-founded Abgenix, Inc., a company that specialized in the discovery, development and manufacture of human therapeutic antibodies, and from June 1996 through May 2002, he served as its Chief Executive Officer. He also served on the Board of Directors of Abgenix from 1996 and Chairman of the Board of Directors from 2000 until the acquisition of Abgenix by Amgen, Inc. in April 2006. Prior to Abgenix’s formation, Mr. Greer held senior management positions at Cell Genesys, Inc., a biotechnology company, initially as Chief Financial Officer and Vice President of Corporate Development and later as Senior Vice President of Corporate Development, and various positions at Genetics Institute, Inc., a biotechnology research and development company. Mr. Greer currently serves as a Member of the Board of Directors of Nektar Therapeutics, a publicly-tradedpublicly traded biopharmaceutical company (NKTR). Mr. Greer holds a Bachelor of Arts in Economics from Whitman College and an M.B.A. from Harvard University. He also was a Certified Public Accountant. The Board believes that he is qualified to serve as a director of Inogen because of his experience as an accountant and as an executive and director of various public and private biotechnology and biopharmaceutical companies.

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Heather Rider has served as a Member of our Board since 2014, Chairperson of the Compensation Committee and Member of the Nominating and Governance Committee since October 1, 2020. Ms. Rider also served as Chairperson of the Compensation, Nominating and Governance Committee sincefrom January 1, 2018.2018 to September 30, 2020. From 2012 to 2013, Ms. Rider served as Vice President, Global Human Resources of Cymer, Inc., a publicly-tradedpublicly traded supplier of light sources for semiconductor manufacturing that was acquired by ASML Holding NV in 2013.  From October 2010 to September 2012, Ms. Rider served as Senior Vice President, Global Human Resources of Alphatec Holdings, Inc., a publicly-traded medical device company focused on surgical treatment of spine disorders, and from 2006 to 2010, she served as Vice President, Human Resources of Intuitive Surgical, Inc., a publicly-traded manufacturer of robotic surgical systems. From 2001 to 2005, Ms. Rider served as Senior Vice President of Global Human Resources of Sunrise Medical, Inc., a global manufacturer and distributor of durable medical equipment. From 1998 to 2001, Ms. Rider served as Vice President of Human Resources of Biosense Webster, a member of the Johnson & Johnson family of companies, and a medical device manufacturer of intracardiac catheters and location technology. Prior to 1998, Ms. Rider served as Head of Human Resources for City of Hope, a leading research and treatment center for cancer, diabetes and other life-threatening diseases, CAP/MPT, a medical malpractice provider for physicians in California and medical malpractice insurance for large physician groups and hospitals, and Environmental Diagnostics International, a bio-diagnostics company with focus on the detection of environmental compounds and diseases using monoclonal antibody technology. Ms. Rider currently serves on the Board of Directors of Intricon Corporation, a medical technology company.  Ms. Rider holds a Bachelor of Arts in Psychology from Claremont McKenna College and an M.B.A. from Pepperdine University. The Board believes that she is qualified to serve as a director of Inogen because of her extensive executive-level experience with healthcare and life science companies.

Kristen Miranda has served as Aetna’s West Region President since 2017. Prior to joining Aetna, she served as the Chief Integration Officer for Agilon Health from 2016 to 2017, and in various senior leadership roles for Blue Shield of California from 2006 to 2016 including Senior Vice President, Strategic Partnerships and Innovation as well as Vice President, Provider Network Management. Prior to that, Ms. Miranda held leadership roles at various healthcare firms including Wellpoint from 2003 to 2006, CIGNA from 1998 to 2003, Health Net from 1995 to 1998, Dignity Health from 1993 to 1995, and First Health from 1989 to 1993. Ms. Miranda has a Bachelor of Arts degree in Anthropology from the University of California, Davis. The Board believes that she is qualified to serve as a director of Inogen because of her leadership experience and her extensive healthcare experience.  

Scott A. BeardsleyContinuing Directors

Loren McFarland has served as a Member of our Board since January 1, 2017.2013. He has been President and Managing Member of Santa Barbara Financial Services, LLC since 2008. Prior to founding Santa Barbara Financial Services, he served as the Chief Financial Officer and Treasurer of Mentor Corporation, a medical equipment company, from 2004 to 2007. Prior to that, Mr. Beardsley is employedMcFarland fulfilled various finance and accounting roles at Mentor from 1985 to 2004. He worked as a Managing Partner by Novo Ventures (US)Certified Public Accountant and Audit Supervisor with Touche Ross & Co., Inc., which provides certain financial investment consultancy servicesan accounting firm, from 1981 to Novo Holdings A/S, a Danish limited liability company that manages investments1985 and financial assets. Mr. Beardsley has worked within Novo Holdings A/S and its investment activities since 2009 in several roles: since January 2018, Mr. Beardsley has been employed by Novo Ventures (US) Inc. as a Managing Partner; from 2016 through 2017, he was employed as a Senior Partner by Novo Ventures (US) Inc.; from December 2012 through 2015, he was employed as a Partner by Novo Ventures (US) Inc.; and from 2009 through 2012, he was employed as a Senior Partner by Novo Holdings A/S. Prior to joining Novo Holdings A/S, Mr. Beardsley was a Managing Directorserved in the Health Care Group at J.P. Morgan,North Dakota Army National Guard from 1978 to 1984. He currently serves on the Board of Managing Members and as the Chief Financial Officer of Cure Medical, LLC, a bankingprivately held manufacturer of disposable urology products, and financial services company, from 2006 through 2008, and a Managing Director inchairs the Health Care Group of US Bancorp Piper Jaffray, an investment bank, from 2001 to 2006.parish finance council for St. Mark’s University Parish, Isla Vista, CA. Previously, Mr. Beardsley was an investment banker at US Bancorp, Piper Jaffray, Montgomery Securities, an investment bank, and Kidder, Peabody & Co. Incorporated, an investment bank. Mr. Beardsley currently serves as a member ofMcFarland served on the Board of Directors of UnchainedPatient Safety Technologies, Inc. (PSTX) as the Financial Expert on the Audit Committee and as a Member of the Compensation, Nominating, and Governance Committee and on the Board of Directors of the MIT Enterprise Forum of the Central Coast. Mr. McFarland has a Bachelor’s degree in accounting from the University of North Dakota and an MBA from the University of California, Los Angeles. He completed an ISS Director Certification Program in October 2008 at the University of California, Los Angeles’ Anderson School. The Board believes that he is qualified to serve as a director of Inogen because of his leadership experience and his extensive experience in finance and accounting.

Benjamin Anderson-Ray has served as a Member of our Board since 2013 and Chairperson of the Nominating and Governance Committee since October 1, 2020. He has been a Partner and Advisor with Trinitas Advisors, a consulting firm, since 2009. Prior to joining Trinitas Advisors, he served as the Chief Executive Officer of three manufacturing companies: Hubbardton Forge, LLC from 2008 to 2009, Chromcraft Revington, Inc. from 2005 to 2008 and Gravograph New Hermes from 2002 to 2004. Prior to that, Mr. Anderson-Ray held various senior leadership roles at Sunrise Medical,

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Labs,Inc., a life sciences tools company.global manufacturer and distributor of durable medical equipment, including President of the Global Business Group in 2001, President of the Continuing Care Group from 1998 to 2000, and President of the Mobility Products Division from 1996 to 2001. Earlier in his career, Mr. Beardsley received hisAnderson-Ray held management and marketing roles at GE Lighting, a lighting solutions company, from 1984 to 1993, Black & Decker Home Products, a product manufacturing company, from 1993 to 1994, and Rubbermaid Home Products, a manufacturer and distributor of household items, from 1994 to 1996. He currently serves on the Board of Directors of Sommetrics, Inc. Mr. Anderson-Ray has Bachelor of Art and Science degrees in Marketing and Horticulture from Michigan State University and an M.B.A. from the Anderson GraduateUniversity of Michigan. The Board believes that he is qualified to serve as a director of Inogen because of his leadership experience and his extensive industry experience.

Nabil Shabshab has served as our Chief Executive Officer, President and a member of our Board since February 2021. Prior to joining Inogen, Mr. Shabshab served as Worldwide President of Diabetes Care and Digital Health at Becton Dickinson and Company, a leading medical technology company, from August 2017 to February 2021. Prior to that, since August 2011, Mr. Shabshab served as Becton Dickinson’s Chief Marketing Officer and Executive Vice President of Strategic Planning. Prior to Becton Dickinson, Mr. Shabshab served as EVP, Global Portfolio, Chief Marketing Officer and Head of RD&E of Diversey, Inc., a cleaning and sanitation solutions company from 2006 to 2010. In his previous roles Mr. Shabshab served as Principal with The Zyman Group, as Vice President, Client Solutions and Consulting with Symphony IRI, and in various sales and marketing roles in pharmaceutical and consumer goods companies including Warner Lambert / Pfizer, the Coca-Cola Company, and Fronterra. Mr. Shabshab holds an MBA from Northwestern University Kellogg School of Management at UCLA and his Bachelor of Sciencea B.S. in Business AdministrationComputer Sciences from Colorado StateAmerican Lebanese University. The Board believes that he is qualified to serve as a director of Inogen due to his extensive financial experienceindustry and leadership experience.  

Heath Lukatch, Ph.D. has served as Chairperson of our Board since 2008, and as a Member of our Board since 2006. Dr. Lukatch is Founder and Managing Partner of Red Tree Venture Capital, a life sciences venture capital firm. From 2015 to 2020, Dr. Lukatch worked at TPG where he was Partner, Managing Director and Life Sciences Investment Team Leader in TPG’s Biotech, Growth and RISE platforms. In 2006, Dr. Lukatch cofounded Novo Ventures’ San Francisco office, where he was a Partner through 2015. Prior to joining Novo Ventures, Dr. Lukatch was a Managing Director responsible for biotechnology venture investments at Piper Jaffray Ventures and SightLine Partners. Dr. Lukatch currently serves as Chairman of Inogen (INGN) and Satsuma Pharmaceuticals (STSA) and is a board member at Excellergy, Flexion Therapeutics (FLXN), Magnus Medical and Vaxcyte (PCVX). Previously Dr. Lukatch was Chairman of Cianna Medical (acquired by Merit Medical), Engage Therapeutics (acquired by UCB) and Spinifex (acquired by Novartis), and served on multiple life sciences company boards, including: Amira (acquired by BMS), AnaptysBio (ANAB), Elevation Pharma (acquired by Sunovion), FoldRx (acquired by Pfizer), InSound Medical (acquired by Sonova) and Synosia Therapeutics (acquired by BioTie). Dr. Lukatch was also a board observer at Alios BioPharma (acquired by J&J), Dynavax (DVAX), Fluidigm (FLDM) and SI-Bone (SIBN). Prior to becoming an investor, Dr. Lukatch worked as a strategy consultant with McKinsey & Company and was co‐founder and CEO of AutoMate Scientific, a biotechnology instrumentation company. In addition, he was a bench scientist at Chiron, Roche Bioscience and Cetus, doing molecular biology, electrophysiology and protein chemistry, respectively. Dr. Lukatch received his Ph.D. in Neuroscience from Stanford University where he was a DOD USAF Fellow, and his experienceB.A. with high honors in Biochemistry from the University of California at Berkeley.

Raymond Huggenberger has served as a venture capital investorMember of our Board since 2008. Mr. Huggenberger previously served as our Chief Executive Officer from 2008 until March 1, 2017 and investment bankeras our President from 2008 until January 1, 2016. Prior to joining our company, Mr. Huggenberger held various management positions with Sunrise Medical Inc., a global manufacturer and distributor of durable medical equipment, including: Vice President of Marketing for Sunrise’s German subsidiary from 1994 to 1996, President of Sunrise’s German division from 1998 until 2000, President of the European Operating Group from 2000 to 2002, President and Chief Operating Officer from 2002 until 2004, and President of European Operations 2006 to 2007. Mr. Huggenberger also held a consultant position with McDermott and Bull Inc., an executive search firm, from 2005 to 2006 and the position of Managing Director in the life sciences industry.healthcare division of TA Triumph Adler AG, a document process management firm, from 1996 to 1998. Mr. Huggenberger currently serves on the Board of Directors of Tactile Medical, Avation Medical, Zerigo Health and Sommetrics (all medical device companies) as well as Intricon Corporation, a medical technology company.He previously served on the Board of Directors of IYIA Technologies, a healthcare company.  Mr. Huggenberger graduated from AKAD University in Rendsburg, Germany in Economics and completed the Advanced Marketing Strategies Program at INSEAD, Fontainebleau, France. The Board

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believes that he is qualified to serve as a director of Inogen because of his deep understanding of our business, operations and strategy and extensive executive and director roles with healthcare companies.

Director Independence

Our common stock is listed on the NASDAQ Global Select Market.  Under the rules of the NASDAQ Global Select Market, independent directors must comprise a majority of a listed company’s Board of Directors. In addition, the rules of the NASDAQ Global Select Market require that, subject to specified exceptions, each member of a listed company’s Audit Committee, Compensation Committee, and Compensation, Nominating and Governance Committee be independent. Under the rules of the NASDAQ Global Select Market, a director will only qualify as an “independent director” if, in the opinion of that company’s Board of Directors, that person does not have a relationship that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director.

Our Board has undertaken a review of its composition, the composition of its committees and the independence of each of our directors and considered whether any director has a material relationship with us that could compromise his or her ability to exercise independent judgment in carrying out his or her responsibilities. Based upon information requested from and provided by each director concerning his or her background, employment and affiliations, including family relationships, our Board has determined that none of Mr. Anderson-Ray, Mr. McFarland, Mr. Greer, Dr. Lukatch, Ms. Rider, Mr. Huggenberger and Mr. Beardsley,Ms. Miranda, representing sixseven of our eight directors, has a relationship that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director and that each of these directors is “independent” as that term is defined under the rules of the NASDAQ Global Select Market. Our Board also determined that Mr. Greer (Chairperson), Mr. McFarland and Mr. Anderson-Ray, who comprise our Audit Committee, andCommittee; Ms. Rider (Chairperson), Dr. Lukatch and Mr. Beardsley,Ms. Miranda, who comprise our Compensation Committee; and Mr. Anderson-Ray (Chairperson) and Ms. Rider, who comprise our Nominating and Governance Committee, satisfy the independence standards for those committees established by applicable Securities and Exchange Commission, or SEC, rules and the listing standards of the NASDAQ Global Select Market.

In making this determination, our Board considered the relationships that each non-employee director has with us and all other facts and circumstances our Board deemed relevant in determining independence, including the beneficial ownership of our capital stock by each non-employee director.

Board Leadership Structure

Our corporate governance principles require that the positions of chairperson of the Board and Chief Executive Officer must be held by separate persons and that the chairperson of our Board must be independent, as determined in accordance with the rules of the NASDAQ Global Select Market. Dr. Lukatch currently serves as the chairperson of our Board.  Our Board believes the current board leadership structure provides effective independent oversight of management while allowing our Board and management to benefit from Dr. Lukatch’s leadership and years of experience as a venture capital investor in the biotech industry.industry and that Dr. Lukatch is best positioned to identify strategic priorities, lead critical discussion and execute our strategy and business plans.  Dr. Lukatch possesses detailed in-depth knowledge of the issues, opportunities, and challenges facing us. Independent directors and management sometimes have different perspectives and roles in strategy development. Our Board believes that Dr. Lukatch’s role enables strong leadership, creates clear accountability, facilitates information flow between management and our Board, and enhances our ability to communicate our message and strategy clearly and consistently to stockholders.  

Board Diversity

Inogen embraces our Board’s diversity of background, experience, culture, and other characteristics that make the Board unique. Diversity at the top sets the expectation for inclusion throughout the organization.  As a result, we are disclosing specific diversity-related metrics, including self-identified sex, race, and sexual orientation.  The Equal Employment Opportunity Commission (“EEOC”) defines an “underrepresented minority” as an individual who self-identifies in one or more of the following groups:  Black or African American, Hispanic or Latinx, Asian, Native American or Alaska Native, Native Hawaiian or Pacific Islander or Two or More Races or Ethnicities.  The EEOC defines a “LGBTQ+” as an individual who self-identifies in one or more of the following groups:  lesbian, gay, bisexual,

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transgender, and queer or questioning in regards to their sexual orientation.  Two of the eight board directors self-identified with one or more diversity characteristic.  

Board Meetings and Committees

During 2018,2020, our Board held sixthirteen meetings (including regularly scheduled and special meetings), and each director attended at least 75% of the aggregate of (i) the total number of meetings of our Board and (ii) the total number of meetings held by all committees of our Board on which he or she served during the periods that he or she served.

It is the policy of our Board to regularly have separate meeting times for independent directors without management.  Although we do not have a formal policy regarding attendance by members of our Board at Annual Meetings of Stockholders, we encourage, but do not require, our directors to attend. All eight members of our Board attended our 20182020 Annual Meeting of Stockholders.

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We have established an Audit Committee, a Compensation Committee, and a Nominating and Governance Committee. Prior to October 1, 2020, the Board had an Audit Committee and a Compensation, Nominating and Governance committee. Effective October 1, 2020, the Board approved the dissolution of the Compensation, Nominating and Governance Committee and established the Compensation Committee and the Nominating and Governance Committee. 

We believe that the composition of these committees meets the criteria for independence under, and the functioning of these committees complycomplies with the requirements of, the Sarbanes-Oxley Act of 2002, the rules of the NASDAQ Global Select Market, and SEC rules and regulations. We intend to comply with the requirements of the NASDAQ Global Select Market with respect to committee composition of independent directors.  Each committee has the composition and responsibilities described below.

Audit Committee

The members of our Audit Committee are Mr. Greer (Chairperson), Mr. McFarland and Mr. Anderson-Ray, each of whom is a non-employee member of our Board.  The composition of our Audit Committee meets the requirements for independence under current NASDAQ Global Select Market listing standards and SEC rules and regulations. Each member of our Audit Committee also meets the financial literacy requirements of the NASDAQ Global Select Market listing standards. Our Audit Committee Chairperson, Mr. Greer, isand Audit Committee member Mr. McFarland are our Audit Committee financial expert,experts, as that term is defined under the SEC rules implementing Section 407 of the Sarbanes-Oxley Act of 2002, and each of Mr. Greer and Mr. McFarland possesses financial sophistication, as defined under the

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listing standards of the NASDAQ Global Select Market. Our Audit Committee oversees our corporate accounting and financial reporting process and assists our Board in monitoring our financial systems. Our Audit Committee also:

Our Audit Committee operates under a written charter that satisfies the applicable rules and regulations of the SEC and the listing requirements of the NASDAQ Global Select Market. A copy of the charter of our Audit Committee is available on our website at www.inogen.com in the Corporate Overview – Governance Documents section of our Investors webpage.https://investor.inogen.com/corporate-governance/governance-documents.  During 2018,2020, our Audit Committee held eleventen meetings.

Compensation Committee

The Compensation Committee was established effective October 1, 2020. Previously the compensation functions were performed by the prior compensation, nominating and governance committee. The current members of our Compensation Committee are Ms. Rider (Chairperson), Dr. Lukatch and Ms. Miranda. The composition of our Compensation Committee meets the requirements for independence under current NASDAQ Global Select Market listing standards and SEC rules and regulations. Each member of the Compensation Committee is also a non-employee director, as defined pursuant to Rule 16b-3 promulgated under the Exchange Act. Our Compensation Committee oversees our compensation policies, plans and benefits programs. Our Compensation Committee also:

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Our Compensation Committee operates under a written charter that satisfies the listing standards of NASDAQ Global Select Market. A copy of the charter of our Compensation Committee is available on our website at https://investor.inogen.com/corporate-governance/governance-documents. Following the split of the Compensation, Nominating and Governance Committee into two separate committees in October 2020, our Compensation Committee did not hold any additional meetings in 2020.

The Compensation Committee regularly reviews the services provided by its outside consultants and believes that Pearl Meyer & Partners, LLC (“Pearl Meyer”) is independent in providing executive compensation consulting services.  The Compensation Committee continues to monitor the independence of its compensation consultant on a periodic basis.

Compensation, Nominating and Governance Committee

The current members of our Nominating and Governance Committee are Mr. Anderson-Ray (Chairperson), and Ms. Rider. The composition of our Nominating and Governance Committee meets the requirements for independence under current NASDAQ Global Select Market listing standards and SEC rules and regulations. Our Nominating and Governance Committee oversees our plans and benefits programs. Our Nominating and Governance Committee also:

Our Nominating and Governance Committee operates under a written charter that satisfies the listing standards of the NASDAQ Global Select Market. A copy of the charter of our Nominating and Governance Committee is available on our website at https://investor.inogen.com/corporate-governance/governance-documents. Following the split of the Compensation, Nominating and Governance Committee areinto two separate committees in October 2020, our Nominating and Governance Committee held one additional meeting in 2020.

Compensation, Nominating and Governance Committee

Immediately prior to the dissolution of the Compensation, Nominating and Governance committee effective October 1, 2020, our Compensation, Nominating and Governance Committee was comprised of Ms. Rider (Chairperson), Dr. Lukatch and Mr.former director Scott Beardsley. The composition of our Compensation, Nominating and Governance Committee meetsmet the requirements for independence under current NASDAQ Global Select Market listing standards and SEC rules and regulations. Each member of the Compensation, Nominating and Governance Committee iswas also a non-employee director, as defined pursuant to Rule 16b-3 promulgated under the Exchange Act. Our Compensation, Nominating and Governance Committee overseesoversaw our compensation policies, plans and benefits programs. Our Compensation, Nominating and Governance Committee also:

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Our Compensation, Nominating and Governance Committee operatesoperated under a written charter that satisfiessatisfied the listing standards of NASDAQ Global Select Market.  A copy of the charter of our Compensation, Nominating and Governance Committee is available on our website at www.inogen.com in the Corporate Overview - Governance Documents section of our Investors webpage.  During 2018, our Compensation, Nominating and Governance Committee held two meetings.

The Compensation, Nominating and Governance Committee regularly reviewsreviewed the services provided by its outside consultants and believes that Pearl Meyer is independent in providing executive compensation consulting services.consultants. The Compensation, Nominating and Governance Committee conducted a review of its relationship with Pearl Meyer in 2018,2019, and determined that Pearl Meyer’s work for the Compensation, Nominating and Governance Committee did not raise any conflicts of interest, consistent with the guidance provided under the Dodd-Frank Act, the SEC and NASDAQ Global Select Market.

The Prior to the split of the Compensation, Nominating and Governance Committee continues to monitorinto two separate committees in October 2020, the independence of its compensation consultant on a periodic basis.Compensation, Nominating and Governance Committee held four meetings in 2020.

Compensation Nominating and Governance Committee Interlocks

None of the members of our Compensation Nominating and Governance Committee (which(which includes Ms. Rider, Dr. Lukatch and Mr.Ms. Miranda) and none of the former members of our prior Compensation, Nominating and Governance committee (which included Ms. Rider, Dr. Lukatch and former director Scott Beardsley) is or has at any time during the past year been an officer or employee of our Company. None of our executive officers currently serves, or in the past year has served, as a member of the Board of Directors or Compensation Committee (or other board committee performing equivalent functions) of any entity that has one or more of its executive officers serving on our Board or our current Compensation Committee or former Compensation, Nominating and Governance Committee.

The Compensation, Nominating and Governance Committee was separated into the Compensation Committee and Nominating and Governance Committee effective as of October 1, 2020. During 2020, each committee held the following number of meetings:

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References to the “Compensation Committee” in the “Compensation Discussion and Analysis” section below are to (i) the Compensation, Nominating and Governance Committee with respect to any actions taken before October 1, 2020, and (ii) the Compensation Committee with respect to any actions taken on or after October 1, 2020.

Identifying and Evaluating Nominees for Director

The Nominating and Governance Committee was established effective October 1, 2020. Prior to October 1, 2020, the Nominating and Governance Committee functions were performed by the Compensation, Nominating and Governance Committee. The Nominating and Governance Committee will use the following procedures to identify and evaluate any individual recommended or offered for nomination to the Board:

Auditor Independence

In 2018,2020, there were no other professional services provided by Deloitte & Touche LLP that would have required our Audit Committee to consider their compatibility with maintaining the independence of Deloitte & Touche LLP.

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Audit Committee Policy on Pre-Approval of Audit and Permissible Non-Audit Services of Independent Registered Public Accounting Firm

Our Audit Committee has established a policy governing our use of the services of our independent registered public accounting firm. Under the policy, our Audit Committee is required to pre-approve all audit and permissible non‑audit services performed by our independent registered public accounting firm in order to ensure that the provision of such services does not impair such accounting firm’s independence. All fees paid to Deloitte & Touche LLP for our fiscal years ended December 31, 20182020 and 20172019 were pre-approved by our Audit Committee.

Vote Required

The ratification of the appointment of Deloitte & Touche LLP requires the affirmative vote of a majority of the shares of our common stock present virtually in person or represented by proxy at the Annual Meeting and entitled to vote thereon.  Abstentions will have the effect of a vote AGAINST the proposal.  

THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” THE
RATIFICATION OF THE APPOINTMENT OF DELOITTE & TOUCHE LLP as our independent registered public accounting firm for our fiscal year ending December 31, 20192021.

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PROPOSALPROPOSAL NO. 3

ADVISORY VOTE ON NAMED EXECUTIVE OFFICER COMPENSATION

The Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, or the Dodd-Frank Act, enables stockholders to approve, on an advisory or non-binding basis, the compensation of our Named Executive OfficersNEOs as disclosed pursuant to Section 14A of the Exchange Act. This proposal, commonly known as a “Say-on-Pay” proposal, gives our stockholders the opportunity to express their views on our Named Executive Officers’NEOs compensation as a whole. This vote is not intended to address any specific item of compensation or any specific named executive officer,NEO, but rather the overall compensation of all of our Named Executive OfficersNEO, and the philosophy, policies and practices described in this proxy statement.

The Say-on-Pay vote is advisory, and therefore is not binding on us, the Compensation Nominating and Governance Committee or our Board. The Say-on-Pay vote will, however, provide information to us regarding investor sentiment about our executive compensation philosophy, policies and practices, which the Compensation Nominating and Governance Committee will be able to consider when determining executive compensation for the remainder of the current fiscal year and beyond. Our Board and our Compensation Nominating and Governance Committee value the opinions of our stockholders and to the extent there is any significant vote against the named executive officerNEO compensation as disclosed in this proxy statement, we will endeavor to communicate with stockholders to better understand the concerns that influenced the vote, consider our stockholders’ concerns and the Compensation, Nominating and Governance Committee will evaluate whether any actions are necessary to address those concerns.

We believe that the information provided in the “Executive Compensation” section of this proxy statement, including the information discussed in “Compensation Discussion and Analysis—Executive Compensation Philosophy and Program Design” beginning on page 31 below, particularly the continued use of performance-based sharesawards in our equity plan, demonstrates that our executive compensation program is designed appropriately and is working to ensure management’s interests are aligned with our stockholders’ interests to support long-term value creation. Accordingly, we ask our stockholders to vote “FOR” the following resolution at the Annual Meeting:

“RESOLVED, that the stockholders approve, on an advisory basis, the compensation paid to the Named Executive Officers,NEOs, as disclosed in the proxy statement for the 20192021 Annual Meeting pursuant to the compensation disclosure rules of the SEC, including the compensation discussion and analysis, compensation tables and narrative discussion, and other related disclosure.”

Vote Required

Approval of named executive officerNEO compensation requires the affirmative vote of a majority of the shares of our common stock present in personvirtually or represented by proxy at the Annual Meeting and entitled to vote thereon. Abstentions will have the effect of a vote AGAINST the proposal and broker non-votes will have no effect.

As an advisory vote, this proposal is non-binding. Although the vote is non-binding, our Board and our Compensation Nominating and Governance Committee value the opinions of our stockholders and will consider the outcome of the vote when making future compensation decisions for our Named Executive Officers.NEOs.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE “FOR” APPROVAL, ON AN ADVISORY BASIS, OF THE NAMED EXECUTIVE OFFICER COMPENSATION AS DESCRIBED IN THIS PROXY STATEMENT.

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AUDIT COMMITTEE REPORT

The information contained in the following Audit Committee Report shall not be deemed to be “soliciting material” or to be “filed” with the Securities and Exchange Commission,SEC, nor shall such information be incorporated by reference into any future filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that Inogen, Inc., or the Company, specifically incorporates it by reference in such filing.

The primary purpose of our Audit Committee is to oversee our financial reporting process on behalf of our Board. The Audit Committee’s functions are more fully described in its charter, which is available on our website at www.inogen.com in the Corporate Overview – Governance Documents section of our Investors webpage.https://investor.inogen.com/corporate-governance/governance-documents. The Audit Committee reviews and reassesses the adequacy of its charter and the Audit Committee’s performance on an annual basis.

The Audit Committee does not itself prepare financial statements or perform audits, and its members are not auditors or certifiers of our financial statements. Management has the primary responsibility for our financial statements and reporting processes, including our systems of internal controls. Our independent registered public accounting firm is responsible for performing an independent audit of our financial statements in accordance with generally accepted auditing standards and the effectiveness of our internal control over financial reporting and issuing a report thereon.

The Audit Committee also reviews the performance of our independent registered public accounting firm, Deloitte & Touche LLP in the annual audit of our financial statements and in assignments unrelated to the audit, reviews and approves the independent registered public accounting firm’s audit and non-audit fees.

The members of the Audit Committee are currently R. Scott Greer (chairperson), Benjamin Anderson-Ray and Loren McFarland. Each of the members of the Audit Committee is an independent director as currently defined in the applicable NASDAQ and Securities and Exchange Commission (“SEC”)SEC rules. The Board has also determined that Mr. Greer is anand Mr. McFarland are “audit committee financial expert”experts” as described in applicable rules and regulations of the SEC. The Audit Committee provides our Board such information and materials as it may deem necessary to make our Board aware of financial matters requiring the attention of our Board. The Audit Committee reviews our financial disclosures and meets privately, outside the presence of our management, with our independent registered public accounting firm. In fulfilling its oversight responsibilities, the Audit Committee reviewed and discussed the audited financial statements in our Annual Report with management, including a discussion of the quality and substance of the accounting principles and significant accounting policies, the reasonableness of significant judgments made in connection with the audited financial statements, and the clarity of disclosures in the financial statements. The Audit Committee reports on these meetings to our Board.

The Audit Committee has reviewed and discussed the Company’s audited financial statements with management and Deloitte & Touche LLP, the Company’s independent registered public accounting firm. The Audit Committee has discussed with Deloitte & Touche LLP the matters required to be discussed by Auditing Standard No. 1301, “Communications with Audit Committees” issued by the Public Company Accounting Oversight Board (“PCAOB”).

The Audit Committee has received and reviewed the written disclosures and the letter from Deloitte & Touche LLP required by the applicable requirements of the PCAOB regarding Deloitte & Touche LLP’s communications with the Audit Committee concerning independence, and has discussed with Deloitte & Touche LLP its tenure and independence.

Based on the review and discussions referred to above, the Audit Committee recommended to the Board that the Company’s Audited Financial Statements be included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 20182020 for filing with the SEC. The Audit Committee also has selected Deloitte & Touche LLP as the independent registered public accounting firm for fiscal year 2019.2021. The Board recommends that stockholders ratify this selection at the Annual Meeting.

Respectfully submitted by the members of the Audit Committee of the Board of Directors:

R. Scott Greer (Chairperson)

Benjamin Anderson-Ray

Loren McFarland

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EXECUTIVE OFFICERS

The following table identifies certain information about our executive officers as of March 15, 2019.12, 2021.  Each executive officer serves at the discretion of our Board and holds office until his or her successor is duly elected and qualified or until his or her earlier resignation or removal.  There are no family relationships among any of our directors or executive officers.

Scott WilkinsonNabil Shabshab has served as our President and Chief Executive Officer, since March 1, 2017,President and a Membermember of our Board since January 1, 2017.  Previously, heFebruary 2021. Prior to joining Inogen, Mr. Shabshab served as ourWorldwide President of Diabetes Care and Digital Health at Becton Dickinson and Company, a leading medical technology company, from August 2017 to February 2021.  Prior to that, since August 2011, Mr. Shabshab served as Becton Dickinson’s Chief OperatingMarketing Officer from January 1, 2016 through February 28, 2017, and our Executive Vice President Sales and Marketing from 2008 through December 31, 2015, and in this role oversaw Inogen’s global operations in sales, marketing, customer service, product management, medical billing, and clinical services.of Strategic Planning. Prior to that, heBecton Dickinson, Mr. Shabshab served as our DirectorEVP, Global Portfolio, Chief Marketing Officer and Head of Product Management from 2005 to 2006RD&E of Diversey, Inc., a cleaning and Vice President, Product Managementsanitation solutions company from 2006 to 2008.  From 2000 to 2005,2010. In his previous roles Mr. Wilkinson worked for Invacare Corporation, a designer and manufacturer of oxygen products, as a Group Product Manager and helped launch their $100 million oxygen product line segment.  From 1999 to 2000, Mr. WilkinsonShabshab served as Principal with The Zyman Group, as Vice President, Client Solutions and Consulting with Symphony IRI, and in various sales and marketing roles in pharmaceutical and consumer goods companies including Warner Lambert / Pfizer, the Coca-Cola Company, and Fronterra. Mr. Shabshab holds an MBA from Northwestern University Kellogg School of Management and a Product Line Director with Johnson & Johnson, a healthcare company.  From 1988 to 1999, Mr. Wilkinson worked as a Research Scientist, Product Manager, and Project Leader at Kimberly Clark, a consumer products company.  Mr. Wilkinson received a Bachelor of Science degreeB.S. in Chemical EngineeringComputer Sciences from the University of Akron and an M.B.A. from University of Wisconsin, Oshkosh.American Lebanese University.  

Alison Bauerlein is a co-founder of Inogen and has served as our Chief Financial Officer since 2009 and Executive Vice President, Finance since March 2014. Ms. Bauerlein has also served as Corporate Secretary and Corporate Treasurer since 2002. Ms. Bauerlein previously served as our Vice President, Finance from 2008 until March 2014. Prior to serving in these positions, Ms. Bauerlein also served as Controller with our company from 2008 to 2009 and 2001 to 2004, and the Director of Financial Planning and Analysis from 2004 to 2008. Ms. Bauerlein has over 15 years’19 years of experience in treasury, finance, accounting, risk management as well as strategic and tactical cost analysis and forecasting. Ms. Bauerlein received a Bachelor of Arts degree in Economics/Mathematics with high honors from the University of California, Santa Barbara.

Brenton Taylor is a co-founder of Inogen and has served as our Executive Vice President, Engineering since March 2014.  Prior to serving in this position, Mr. Taylor served as our Vice President, Engineering from 2008 until March 2014 and as the Director of Technology with our company from 2003 to 2008.  Mr. Taylor is listed as an inventor on 28 of the Company’s issued U.S. patents related to portable oxygen concentrator development.  Mr. Taylor received a Bachelor of Science degree in Microbiology from the University of California, Santa Barbara.

Byron Myers is a co-founder of Inogen and has served as our Executive Vice President, Sales and Marketing since January 1, 2017.August 2020. Previously, Mr. Myers served as our Executive Vice President, Sales and Marketing from 2017 to August 2020 and Vice President, Marketing from 2011 to 2016. In his current role, Mr. Myers leads Inogen’s Sales, Marketing and Product Management Operations. Prior to serving in these positions, Mr. Myers held various roles with our company, including: Product Manager from 2002 to 2006, Director of Marketing from 2006 to 2007 and 2008 to 2011, International Product Manager during 2007, and Director of International Product Management from 2007 to 2008. Mr. Myers received a Bachelor of Arts degree in Economics/Mathematics from the University of California, Santa Barbara and an M.B.A. from the Rady School of Management at the University of California, San Diego.

-25-Arron Retterer has served as our Executive Vice President, Sales since August 2020.  Mr. Retterer was the Global Platform Leader for V. Mueller Surgical Instruments (Becton Dickinson) from June 2016 to October 2019. From October 2010 to May 2016, Mr. Retterer served as the National Vice President, Sales, for several medical device divisions of BD/Carefusion, including V. Mueller/Snowden-Pencer Surgical Instruments, Airlife Respiratory and Inside Sales. From August 2000 to September 2010, Mr. Retterer served in various escalating sales roles with the V. Mueller/Snowden-Pencer Surgical Instrument business. Mr. Retterer received a Master of Science degree from the University of Oregon and a Bachelor of Science degree from the University of Arizona.

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Bart Sanford has served as our Executive Vice President, Operations since September 2018.  From April 2017 to September 2018, Mr. Sanford was Senior Vice President, Operations, at Cepheid Inc., a molecular diagnostics company. From October 2010 to March 2017, Mr. Sanford was Vice President, Global Operations, at Molecular Devices, LLC, a life sciences company. From January 2009 to September 2010, Mr. Sanford was a Corporate Director at Danaher Corporation, a medical device company. From March 2000 to December 2008, Mr. Sanford held various positions at Fluke Corporation, an industrial test product company, including plant manager, manufacturing manager and materials manager. Mr. Sanford received an M.B.A. from Central Michigan University and a Bachelor of Arts degree in Logistics, Materials and Supply Chain Management from Michigan State University.

-26-Brenton Taylor is a co-founder of Inogen and has served as our Executive Vice President, Engineering since March 2014. Prior to serving in this position, Mr. Taylor served as our Vice President, Engineering from 2008 until March 2014 and as the Director of Technology with our company from 2003 to 2008. Mr. Taylor is listed as an inventor on 33 of the Company’s issued U.S. patents related to portable oxygen concentrator development. Mr. Taylor received a Bachelor of Science degree in Microbiology from the University of California, Santa Barbara.

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EXECUTIVE COMPENSATION

Compensation Discussion and Analysis

This Compensation Discussion and Analysis describes the principles underlying the material components of our executive compensation program for our executive officers, including the Named Executive OfficersNEOs, in the “Summary Compensation Table.” We also provide an overview of the overall objectives of the program and the factors relevant to an analysis of these policies and decisions and how we use our executive compensation program to drive our performance.

Our “Named Executive Officers”NEOs for 2018 are:2020 were:

2021 Management Changes*

On January 22, 2021, our Board appointed Nabil Shabshab to serve as our President and Chief Executive Officer, effective February 8, 2021.  In addition, on January 22, 2021, our Board, upon the recommendation of the Nominating and Governance Committee, appointed Mr. Shabshab to serve as a member of our Board, effective February 8, 2021.  Mr. Shabshab succeeded Mr. Wilkinson, who previously announced that he was retiring from the positions of President, CEO, and as a director.  Mr. Wilkinson’s retirement as an officer and director of the Company became effective February 8, 2021.  In connection with these changes, each of Mr. Shabshab and Mr. Wilkinson entered into an agreement with us, which agreement is described in the “Employment Agreements and Potential Payments Upon Termination or Upon Change in Control” section below.

Executive Summary

2018 was  Covid-19 Impact on Business and Compensation

We had multiple challenges in 2020 due to the COVID-19 pandemic that had a yearsignificant impact on our company, primarily due to a significant reduction in patient travel and activity outside of investmentthe home, reduced consumer confidence and physicians limiting patient interactions. However, we believe we adjusted our operations appropriately to balance minimizing operating losses through operating expense efficiency, while also investing in key areas of the business that we believe are important to our long-term success.

However, as a result of the impact of COVID-19, we did not achieve threshold levels of performance for Inogen as we continued to scalekey metrics in our sales infrastructure primarily associatedannual cash incentive plan, or for the 2020 tranches of our performance-based equity awards.  Consistent with our direct-to-consumer strategy. These investments helped us deliver recordpay-for-performance philosophy, no annual bonus plan payouts were made to our senior executive team for 2020, and none of the performance-based equity awards were earned or vested due to 2020 performance. While the COVID-19 pandemic was unforeseen when performance targets were put in place, the Compensation Committee determined it was appropriate to not make any adjustments to the performance targets for 2020.

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We believe we are a leader in portable oxygen concentrators and that the market for our technology remains underpenetrated.

We are committed to our mission to drive freedom and independence for respiratory therapy patients through our innovative products and services. We believe we can create long-term shareholder value by focusing on increasing patient and physician awareness of our products, growing revenue, and bottom-line resultsoptimizing our business in 20182021 and helped position Inogenbeyond.  We maintain our belief that the need and patient preference for what we believe will be another year of strong revenue growth in 2019. We are executing on our strategic initiatives and remain focused on increasing adoption of our best-in-class portable oxygen concentrators. We also successfully executed on a smooth transition to a new Executive Vice President, Operations.concentrators remains strong.

Our 2018early 2020 executive compensation program and incentive plan targets reflected our objective of building momentum for earnings growth as we continued to utilize performance-based criteria, based on Adjusted Operating Income, in our equity compensation program for our executives so that a significant portion of an executive’s 20182020 equity compensation only vests if we achieve meaningful Adjusted Operating Income targets over a multi-year period. We define “Adjusted Operating Income” for these performance targets as operating income as determined under GAAPU.S. generally accepted accounting principles (“GAAP”) but excluding the impact of (i) revenue and expenses arising from any businesses acquired following the grant date but prior to the end of the applicable performance period, and (ii) stock-based compensation expenses and stock-based compensation payroll taxes.

20182020 Business Performance

Our 2018 financialAs mentioned above, the COVID-19 pandemic impacted both revenue growth and operating performances continuedprofitability in 2020. As a result, we quickly shifted priorities and took multiple actions to bemitigate the impact, including reduced advertising spend, increased focus on new rental setups and improved rental gross margin, and research and development investments to maintain our leadership position.  Despite these headwinds, we demonstrated liquidity and strong as we progressedgrowth in rental revenue and rental gross margin for our effortsstockholders in 2020 compared to 2019.  We continue to look for ways to enhance our business and create and sustain long-term value in several of our key business metrics.  Withmetrics, including additional technology investments, increased consumer and physician awareness, and expanded access to our leadership team, we demonstrated strong growth in revenues, net income and liquidity forproducts through our stockholders in 2018 compared to 2017.rental offerings.

Our 2018 achievements2020 results include:

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Please see Appendix A attached to this proxy statement for a reconciliation of non-GAAP Adjusted EBITDA non-GAAP net income, and non-GAAP Adjusted Operating Income.

Corporate Practices and Alignment to Create Stockholder Value

Our corporate practices are designed to align with stockholder value and long-term stockholder interests, including:

Overview of Executive Compensation Program

Our executive compensation program is designed to be competitive and appropriately balance our goals of attracting, motivating, rewarding, and retaining our executive officers and driving company performance. To align our executive officers’ interests with those of our stockholders and to motivate and reward individual initiative and effort, a substantial portion of each executive officer’s target annual total direct compensation opportunity (base salary, cash incentive compensation and long-term equity awards based on grant date fair value at target levels) is “at-risk,” meaning

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the amounts paid to each executive officer will vary based on our company performance and their contributions to that performance.

We emphasize performance-based compensation that appropriately rewards our executive officers for delivering financial, operational, and strategic results that meet or exceed pre-established annual goals through our cash executive incentive compensation plan  In 2018,2020, we continued to place a strong emphasis on performance-based compensation by granting a portion of each executive officer’s long-term incentive compensation, such that it vests only if we achieve certain Adjusted Operating Income goals over a multi-year period,during the three one-year performance periods, and the executive continues to provide services to us. The continued use of performance-based equity awards is intended to enhance the alignment between the interests of our executives and stockholders and provide incentives for our executives to drive long-term company growth and stockholder value.  

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As illustrated by the charts below, for 2018,2020, performance-based compensation opportunities, consisting of stock awardsperformance-based RSUs and target annual cash incentives,incentive compensation, made up a significant portion of the total annual direct compensation paid to our executive officers: 82%48% for Mr. Wilkinson and 32% for our Chief Executive OfficerNEOs (other than Messrs. Wilkinson and 73% for our other Named Executive Officers.Retterer).

For the NEOs (other than Messrs. Wilkinson and Retterer), each NEOs percentages were separately calculated, and the percentages shown in the chart represent the average of the corresponding percentages for these NEOs.

The percentages above were calculated using base salary as reported in the Summary Compensation Table and target cash incentive compensation and the grant date fair value of stocklong-term equity awards, all as reported in the Summary CompensationGrants of Plan-Based Awards Table.

20182020 Executive Compensation Highlights

Consistent with our pay-for-performance philosophy, we took the following actions during 20182020 with respect to Named Executive OfficerNEO compensation.

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In 2020, we did not achieve our strong results inthreshold of Revenue andor Adjusted EBITDA targets; as a result, we did not pay annual cash bonuses to our NEOs under the 2020 Incentive Plan (as defined below).

-29-In 2020, we did not achieve our threshold Adjusted Operating Income goals; as a result, the 2020 tranches of our performance-based awards were forfeited in their entirety.  

Executive Compensation Governance Highlights

We maintain sound governance standards consistent with our executive compensation policies and practices and we seek to adhere to the best practices for compensation and corporate governance purposes. The Compensation Nominating and Governance Committee and in certain cases, the independent members of our Board, evaluate our executive compensation program regularly to ensure that it supports our short-term and long-term goals given the dynamic nature of our business and the market in which we compete for executive talent as well as protect our stockholders’ interests. These policies and practices were in effect during 2018:2020:

Compensation Governance

Executive Compensation Policies and Practices

Our compensation philosophy and related corporate governance policies and practices are complemented by several specific compensation practices designed to align our executive compensation with long-term stockholder interests, including:

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Executive Compensation PhilosophyPhilosophy and Program Design

Overview

The goals of our executive compensation program are to attract, retain, motivate and reward executive officers who contribute to our success and to incentivize these executives to achieve our short-term and long-term business objectives in order to increase long-term value and increase stockholder returns. This program combines competitive cash and equity awards in the forms and proportions that we believe will motivate our executive officers to increase stockholder value over the long term.

Our executive compensation program is designed to achieve the following specific objectives:

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Executive Compensation Program Framework

For 2018,2020, the principal elements of our executive compensation program are summarized in the following table and described in detail in “Executive Compensation Components” below.

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We also offer our executive officers participationthe opportunity to participate in our 401(k) plan, health care insurance, flexible spending accounts, employee stock purchase plan and certain other benefits available generally to all of our full-time employees.

Governance of Executive Compensation Program

Role of Our Compensation Nominating and Governance Committee and our Board

Our Compensation Nominating and Governance Committee, which operates under a written charter adopted by the Board, is primarily responsible for reviewing and approving or recommending to the Board the compensation arrangements for our executive officers for approval.officers. In carrying out these responsibilities, the Compensation Nominating and Governance Committee reviews all components of executive officer and director compensation for consistency with our compensation philosophy as in effect. The Compensation Nominating and Governance Committee’s review of the base salary levels, annual cash incentive compensation opportunities, and long-term equity incentive compensation opportunities of our executive officers, including the Named Executive Officers,NEOs, generally occurs around the beginning of the year, or more frequently as warranted. To date, our Compensation Nominating and Governance Committee has not established any formal policies or guidelines for allocating compensation between short-term and long-term and currently paid out compensation, between cash and non-cash compensation, or among different forms of non-cash compensation. However, as described above, our Compensation Nominating and Governance Committee does aim forseeks to provide a significant portion of our executive officer compensation in the form of variable, at-risk pay.

Our Compensation Nominating and Governance Committee or the independent members of the Board approve executive compensation decisions after taking into account these recommendations and such other factors as they deem relevant and as further described below. Typically, executive compensation adjustments to cash compensation are effective in the first quarter of the year.

Role of Our Executive Officers

In connection with its review and approval or recommendations, our Compensation Nominating and Governance Committee considers the recommendations of our Chief Executive Officer regarding the compensation of our executive officers who report directly to him. These recommendations generally include annual adjustments to compensation levels and an assessment of each executive officer’s overall individual contribution, scope of responsibilities and level of experience. While our Compensation Nominating and Governance Committee retains discretion to set executive officer compensation, it gives considerable weight to our Chief Executive Officer’s Officer recommendations because of his direct knowledge of each executive officer’s performance and contribution to our financial performance.business.

No other executive officer participates in the determination or recommendation of the amount or form of executive officer compensation, except thatbut our Board or our Compensation Nominating and Governance Committee may discuss with our Chief Executive Officer or Chief Financial Officer our financial, operating and strategic business objectives, incentive targets or performance goals. The Board or the Compensation Nominating and Governance Committee reviews and determines the appropriateness of the financial measures and performance goals, as well as assesses the degree of difficulty in achieving specific incentive targets and performance goals.

Role of Compensation Consultant

The Compensation Nominating and Governance Committee engages an independent compensation consultant to assist it by providing information, analysis, and other advice relating to our executive compensation program and the decisions resulting from its executive compensation review. TheIn 2020, the Compensation Nominating and Governance Committee retained Pearl Meyer to serve as its independent executive compensation consultant in 2018. In 2017, Pearl Meyer reviewedand review the competitiveness of the Company’sour compensation program for our senior executive officers and non-employee directors. Pearl Meyer also advises the Compensation Nominating and Governance Committee regarding various other executive and director compensation issues as requested.

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NoneNo member of the Company’sour management team participated in the Compensation Nominating and Governance Committee’s decision to retain Pearl Meyer. Pearl Meyer reports directly to the Compensation Nominating and Governance Committee, and the Compensation Nominating and Governance Committee may replace Pearl Meyer or hire additional consultants at any time. Pearl Meyer attends meetings of the Compensation Nominating and Governance Committee, as requested, and communicates with the Compensation Nominating and Governance Committee Chairperson between meetings; however, the Compensation Nominating and Governance Committee, or the independent members of the Board, make all decisions regarding the compensation of the Company’s executive officers.our executives.

Pearl Meyer provides various executive compensation consulting services to the Compensation Nominating and Governance Committee with respect to the Company’s executive officersour executives and other key employees pursuant to a written consulting agreement with the Compensation Nominating and Governance Committee. The services Pearl Meyer provides under the agreement include advising the Compensation Nominating and Governance Committee on the principal aspects of the Company’s executive compensation program andincluding evolving best practices and providing market information and analysis regarding the competitiveness of the Company’s executive compensation program design.

Competitive Positioning

In June 2017, our2019, the Compensation Nominating and Governance Committee engaged Pearl Meyer to review our executive compensation programs. Pearl Meyer’s review focused on analyzing market data drawn fromapproved a group of fifteen (15) peer group companies as described below (the “Compensation Peer Group”) and select compensation surveys.  The market data from each of these sources was blended to develop market consensus levels for each of our executive officer’s compensation by element and in total.

.  The Compensation Peer Group updated our prior peer group for merger and acquisition activity and changes in company size and included similarly-situated medical device and diagnostic companies that were identified by Pearl Meyer as companies with similar financial and growth characteristics and as competitors for executive talent based generally on the following criteria:

The resultingupdated Compensation Peer Group consisted of 1517 companies that meetmet the industry criteria, at least three of the five financial criteria, and had either one or three-yeara one-year revenue growth rate or a three-year compound annual revenue growth rate greater than or equal to 10%. The following companies comprised the Compensation Peer Group:Group used to set compensation for 2019 and 2020:

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Certain information regarding the size and value of the Compensation Peer Group companies relative to us is set forth below (based on estimated information at the time of review in June 2017)2019).

The compensation surveys used by Pearl Meyer in developing its market consensus were: Towers Watson – 20162018 Top Management Compensation Survey (all industries), Pearl Meyer & Partners – 20162018 Executive and Senior Management Survey (technology industry), and confidential surveys. For its analysis, Pearl Meyer emphasized data for companies within a revenue range comparable to our company.

In making its 20182020 compensation decisions, the Compensation Nominating and Governance Committee evaluated the target annual total direct compensation (annual base salary, annual cash incentives and long-term equity incentive) for each of our executive officers, including our Named Executive Officers.NEOs. In determining its recommendations for the Board on executive compensation, the Compensation Nominating and Governance Committee reviewed the market consensus data provided by Pearl Meyer.  The Compensation Nominating and Governance Committee reviewed the market consensus data for each executive officer’s base salary and annual target cash incentive and for each executive officer’s long-term equity incentives but did not attempt to benchmark to any specific percentile. In conducting its evaluation, the Compensation Nominating and Governance Committee also considered, among other factors, company performance, each element of compensation, the compensation package as a whole, each executive officer’s past and expected future contribution to our business and our financial performance, and internal pay equity based on the impact on the business and performance, and retention.

We believe that this design allows us to meet the objectives of our executive compensation program, including attracting and retaining talented executives, while retaining flexibility to tailor compensation based on individual circumstances.

In August 2020, the Compensation Committee updated our Compensation Peer Group for merger and acquisition activity and changes in company size and included similarly-situated medical device and diagnostic companies that were identified by Pearl Meyer as companies with similar financial and growth characteristics and as competitors for executive talent based generally on the following criteria:

The updated Compensation Peer Group consisted of 17 companies that meet the industry criteria and financial criteria. The following companies comprised the Compensation Peer Group plan to be used to set compensation for 2021:

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Certain information regarding the size and value of the Compensation Peer Group companies relative to us is set forth below (based on estimated information at the time of review in August 2020).

Executive Compensation Elements and Corporate Performance Measure

Base Salary

We provide an annual base salary to each of our executive officers, including our Named Executive Officers,NEOs, to compensate them for services rendered during the year. Salaries are reviewed annually by the Compensation Nominating and Governance Committee or, at the request of the committee, the independent members of our Board, and adjusted for the ensuing year based on (i) both qualitative and quantitative factors such as company performance, job level, responsibilities and prior experience and expertise, individual performance, and future potential, (ii) internal review of the executive officer’s total compensation, individually and relative to our other executive officers with similar levels of responsibility within our organization and (iii) an evaluation of the compensation levels of similarly-situated executive officers in our Compensation Peer Group and in our industry generally.

For 2018 base salaries, our Compensation, Nominating and Governance Committee approved increases to the base salaries for each of our Named Executive Officers (other than Mr. Sanford) to bring levels closer to the midpoint range of the market consensus group data provided by Pearl Meyer. Mr. Sanford’s annualRetterer’s base salary was negotiatedestablished through arms’ length negotiation in connection with his hiringhire in 20182020.

In setting our other NEO’s’ base salaries for 2020, we considered the recommendations of the Chief Executive Officer regarding the compensation of each of the NEOs who reported directly to him, the NEOs role and approved by our Compensation, Nominatingresponsibilities within the Company, and Governance Committee.such other factors described above.  We consideredalso consider the midpoint range as a general guideline for the appropriate level of base salaries but diddo not attempt to benchmark base salary to any specific percentile. In setting base salaries for 2018, we also considered the recommendations of the Chief Executive Officer regarding the compensation of each of the Named Executive Officers who reported directly to him, the Named Executive Officer’s role and responsibilities within the Company, and such other factors described above.  We believe that this approach to setting base salary levels allows us to be competitive, while retaining flexibility to tailor compensation based on individual circumstances.  

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The 20182020 base salaries for our Named Executive OfficersNEOs were as follows and were effective on February 12, 2018 except as noted below:

follows:

Cash Incentive Compensation

Overview of 20182020 Incentive Plan.  We maintained a cash executive incentive compensation plan for 20182020 (the “2018“2020 Incentive Plan”) for our eligible, non-commissioned employees, including our executive officers.

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The 20182020 Incentive Plan was designed to increase stockholder value and our success by motivating our employees, including our participating Named Executive Officers,NEOs, to perform to the best of their abilities and achieve our objectives.  The Compensation Nominating and Governance Committee determined the performance goals applicable to target awards under the 20182020 Incentive Plan.  

Target Cash Incentive Opportunities.  Each of our executive officers, including each of our Named ExecutiveNEOs, Officers, was assigned a target annual incentive compensation opportunity under the 20182020 Incentive Plan, which was calculated as a percentage of his or her annual base salary for 2018.as of the end of 2020. No changes were made to the target bonus percentagepercentages of any of our Named Executive OfficersNEOs in 2018.  Mr. Sanford’s target bonus percentage was established in connection with his hiring, and approved by our Compensation, Nominating, and Governance Committee.2020.  

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The annual cash incentive compensation opportunities of the Named Executive OfficersNEOs for fiscal 20182020 were: