4360 Park Terrace Drive, Suite 100
Westlake Village, California, 91361

LETTER TO STOCKHOLDERS

April 17, 2023

~~November 2, 2022~~

Dear Stockholder:

You are cordially invited to attend this year’s annual meeting of stockholders of Energy Vault Holdings, Inc. on ~~December 20, 2022,~~May 25, 2023, at 12:00 pm Eastern Time. The annual meeting will be a completely “virtual” meeting. You will be able to attend the annual meeting, as well as vote and submit your questions during the live webcast of the meeting, by visiting www.virtualshareholdermeeting.com/~~NRGV2022~~NRGV2023 and entering the company number and control number included on your proxy card or in the instructions that accompany your proxy materials.

Details regarding admission to the annual meeting and the business to be conducted at the annual meeting are described in the accompanying Notice of Annual Meeting of Stockholders and Proxy Statement.

Whether or not you plan to attend the annual meeting, your vote is important and we encourage you to vote promptly. You may vote by either marking, signing and returning the enclosed proxy card or using telephone or internet voting. For specific instructions on voting, please refer to the instructions on your enclosed proxy card. If you attend the annual meeting you will have the right to revoke the proxy and vote your shares virtually at the meeting. If you hold your shares through an account with a brokerage firm, bank or other nominee, please follow the instructions you receive from your brokerage firm, bank or other nominee to vote your shares.

Sincerely yours,

ROBERT ALLEN PICONI
CHAIRMAN, CO-FOUNDER AND CHIEF EXECUTIVE OFFICER

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ENERGY VAULT HOLDINGS, INC.

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
TO BE HELD ~~DECEMBER 20, 2022~~MAY 25, 2023

When	~~Tuesday, December 20, 2022~~Thursday, May 25, 2023 at 12:00 pm ET		How to Vote in Advance
Where	Virtually at www.virtualshareholdermeeting.com/ ~~www.virtualshareholdermeeting.com/NRGV2022~~NRGV2023	By Mail	Complete, sign, date and return your proxy card or voting instruction form in the postage-paid envelope provided
Proposal 1	Election of ~~two~~three nominees named in the proxy statement to serve on the Board of Directors. The Board of Directors recommends a vote “~~FOR~~”“FOR” each nominee.	By Internet	You can vote your shares online at www.proxyvote.com
Proposal 2	Ratification of the appointment of BDO USA, LLP as the independent registered public accounting firm of the Company for the fiscal year ended December 31, ~~2022.~~2023. The Board of Directors recommends a vote “FOR”.	By Phone	You can vote your shares by calling 1-800-690-6903
Any other business which may properly come before the annual meeting or any adjournment or postponement. In addition to the business to be transacted as described above, management will speak on our developments of the past year and respond to questions of general interest to stockholders.		Your vote is important. Please vote as soon as possible by one of the methods shown above. Be sure to have your proxy card, voting instruction form ~~or Notice of Internet Availability in hand~~ and follow the below instructions:
Who Can Vote	Only owners of record of the Company’s issued and outstanding common stock as of the close of business on ~~October 21, 2022.~~March 27, 2023. Each share of common stock is entitled to one vote.	IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE ANNUAL MEETING OF STOCKHOLDERS TO BE HELD ON ~~DECEMBER 20, 2022~~MAY 25, 2023
Date of Mailing	We intend to mail ~~a Notice of Internet Availability of~~ Proxy Materials on or about ~~November 2, 2022.~~April 17, 2023.

In accordance with rules and regulations adopted by the Securities and Exchange Commission (or “SEC”), we have elected to furnish our proxy materials to stockholders by providing access to the materials on the Internet. Accordingly, a Notice of Internet Availability of Proxy Materials (the Internet Availability Notice) has been mailed to the majority of our stockholders, while other stockholders have instead received paper copies of the documents accessible on the Internet. It is important that your shares be represented and voted whether or not you plan to attend the annual meeting. If you are the registered holder of your shares and are viewing the proxy statement on the Internet, you may grant your proxy electronically via the Internet by following the instructions on the Internet Availability Notice previously mailed to you and the instructions listed on the Internet site. If you are receiving a paper copy of the proxy statement, youYou may vote by completing and mailing the proxy card enclosed with the proxy statement, or you may grant your proxy electronically via the Internet or by telephone by following the instructions on the proxy card. If your shares are held in “street name,” which means your shares are held of record by a broker, bank or other nominee, you ~~should review the Notice of Internet Availability of Proxy Materials used by that firm~~will receive instructions from your broker or other nominee explaining how to ~~determine whether and how you~~vote your shares. You will ~~be able~~have option to ~~submit~~cast your ~~proxy~~vote by telephone or over the ~~Internet.~~Internet if the voting instruction form from your broker or nominee includes instructions and a toll-free telephone number or Internet website to do so. Submitting a proxy over the Internet, by telephone or by mailing a proxy card will ensure your shares are represented at the annual meeting. A list of stockholders entitled to vote at the Annual Meeting will be available for examination by stockholders of record at www.virtualshareholdermeeting.com/~~NRGV2022~~NRGV2023 during the Annual Meeting.

ENERGY VAULT HOLDINGS, INC.
BY ORDER OF THE BOARD OF DIRECTORS

ROBERT ALLEN PICONI
CHAIRMAN, CO-FOUNDER AND CHIEF EXECUTIVE OFFICER

Westlake Village, California
Dated: ~~November 2,~~April 17, 2023

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ENERGY VAULT HOLDINGS, INC.

4360 Park Terrace Drive, Suite 100
Westlake Village, California, 91361

PROXY STATEMENT SUMMARY

This Proxy Statement is furnished in connection with the solicitation of proxies by the Board of Directors (the “Board of Directors” or the “Board”) of Energy Vault Holdings, Inc., a Delaware corporation, for use at the Annual Meeting of Stockholders. This Proxy Statement and related materials are first being mailed to stockholders on or about ~~November 2, 2022.~~April 17, 2023. References in this Proxy Statement to “we,” “us,” “our,” or the “Company” refer to Energy Vault Holdings, Inc. and its consolidated subsidiaries, and references to the “Annual Meeting” are to the ~~2022~~2023 annual meeting of stockholders. When we refer to the Company’s fiscal year, we mean the annual period ended on December 31, ~~2021.~~2022. This proxy statement covers our ~~2021~~2022 fiscal year, which was from January 1, ~~2021~~2022 through December 31, ~~2021,~~2022, or fiscal ~~2021.~~2022.

This summary highlights information contained elsewhere in this proxy statement and does not contain all of the information that you should consider. You should read the entire proxy statement carefully before voting.

Our Annual Meeting

Date and Time	~~December 20, 2022~~May 25, 2023 at 12:00 pm ET	Place	Virtually at www.virtualshareholdermeeting.com/~~NRGV2022~~NRGV2023
Record Date	~~October 21, 2022~~March 27, 2023	Who Can Vote	Only owners of record of the Company’s issued and outstanding Common Stock as of the close of business on ~~October 21, 2022.~~March 27, 2023. Each share of Common Stock is entitled to one vote.
Number of Shares Outstanding as of Record Date	~~137,839,965~~139,616,733 shares of the Company’s common stock, par value $0.0001 per share (the “Common Stock”)

At the Annual Meeting, the stockholders of the Company will be asked to vote on the two proposals below. Your vote is very important. Accordingly, whether or not you plan to attend the Annual Meeting, you should vote by using one of the methods described in these proxy materials. You may vote your shares at the Annual Meeting by voting via the Internet or by telephone as described in these proxy materials or by having your shares represented at the Annual Meeting by a valid proxy. If your shares are not registered directly in your name (e.g., you hold your shares in a stock brokerage account or through a bank or other holder of record), you may vote by following the instructions detailed on the notice or voting instruction form you receive from your broker or other nominee. A list of all stockholders entitled to vote at the Annual Meeting will be available for inspection at our executive offices.

Item Proposals
Board Vote
Recommendations

Page
#

1 Election of two directors ✓ FOR each director nominee 4
2 Ratification of the appointment of BDO USA, LLP as the
independent registered public accounting firm of the
Company for 2022. ✓ FOR 15

Item

Proposals

Board Vote
Recommendations

Page #

Election of three directors

✓

FOR each director nominee

Ratification of the appointment of BDO USA, LLP as the independent registered public accounting firm of the Company for 2023.

✓

FOR

Any stockholder who executes and delivers a proxy has the right to revoke it at any time before it is exercised by delivering to the Secretary of the Company an instrument revoking it or a duly executed proxy ~~bearing a later date, or by attending the Annual Meeting and voting. Subject to revocation, the proxy~~

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bearing a later date, or by attending the Annual Meeting and voting. Subject to revocation, the proxy holders will vote all shares represented by a properly executed proxy received in time for the Annual Meeting in accordance with the instructions on the proxy. If no instruction is specified with respect to a matter to be acted upon, the shares represented by the proxy will be voted in accordance with the recommendation of the Board of Directors.

The expenses of preparing, assembling, printing and mailing ~~the Internet Availability Notice,~~ this Proxy Statement and the materials used in the solicitation of proxies will be borne by the Company. Proxies will be solicited through the Internet and the mail and may be solicited by our officers, directors and employees in person or by telephone, email or facsimile. They will not receive additional compensation for this effort. We do not anticipate paying any compensation to any other party for the solicitation of proxies, but may reimburse brokerage firms and others for their reasonable expenses in forwarding solicitation material to beneficial owners. The Company may retain the services of a proxy solicitation firm if, in the Board’s view, it is deemed necessary or advisable. Although the Company does not currently expect to retain such a firm, it estimates that the fees of such firm could be up to $20,000, plus out-of-pocket expenses, all of which would be paid by the Company.

Election of ~~Two~~Three Directors

✓

OUR BOARD RECOMMENDS YOU VOTE “FOR” EACH DIRECTOR NOMINEE

Committee Membership

Name

Age

Director
Since

Primary Occupation

Board of
Directors

Audit
Committee

Nominating and
Corporate
Governance

Compensation

Age

Director
Since

Primary
Occupation

Board of
Directors

Audit
Committee

Nominating
and
Corporate
Governance

Compensation

Mary Beth Mandanas

2022

Chief Executive Officer at Onyx Renewable Partners

✓

Larry M. Paulson

2021

Chief Executive Officer of Novus Capital Corporation

✓

Zia Huque

2022

General Partner for Prime Movers Lab LLC

✓

Theresa Fariello

2023

Senior Vice President of Government Affairs & Global Public Policy for United Airlines

✓

Thomas Ertel

2022

Senior Vice President and Chief Accounting Officer of Strada Education Network

✓

Ratification of Appointment of Independent Registered Public Accounting Firm

✓

OUR BOARD RECOMMENDS YOU VOTE “FOR” THE RATIFICATION OF THE APPOINTMENT OF BDO USA, LLP

Quorum Requirements

In order to constitute a quorum for the conduct of business at the Annual Meeting, a majority of the shares of the Common Stock entitled to vote at the Annual Meeting must be present at the meeting or represented by proxy. Shares represented by proxies that reflect abstentions or broker non-votes will be counted as shares that are present and entitled to vote for purposes of determining the presence of a quorum.

Required Vote

Each share of our Common Stock outstanding on the record date is entitled to one vote on each of the ~~two~~three director nominees. Each share of our Common Stock outstanding on the record date is entitled to one vote on ~~each~~the other matter. For the re-election of directors, the nominees to serve as directors will be elected by a plurality of the votes cast by the stockholders entitled to vote at the election. You may vote “For All,” “Withhold All,” or “For All Except,” with respect to the director nominees. Votes that are withheld will be excluded entirely from the vote with respect to the nominee from which they are withheld and will have no effect on the election of directors. With respect to Proposal 2, approval of the proposal requires the affirmative

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firm, that bank or brokerage firm may vote your shares of common stock on Proposal 2. Accordingly, we do not expect there to be any broker non-votes for Proposal 2. However, if your shares are held in an account at a bank or brokerage firm, that bank or brokerage will not be permitted to vote your shares of common stock with respect to Proposal 1 unless you provide instructions as to how your shares should be voted. Accordingly, we encourage you to vote promptly, even if you plan to attend the virtual Annual Meeting. In tabulating the voting results for any particular proposal, shares that constitute broker non-votes are not considered entitled to vote on that proposal. Broker non-votes, if any, will have no effect on each of Proposals 1 and 2.

~~Additional Information Regarding the Internet Availability of Our Proxy Materials~~

We are pleased to take advantage of SEC rules that allow companies to furnish their proxy materials over the Internet. Accordingly, we sent to the majority of our stockholders an Internet Availability Notice regarding the Internet availability of the proxy materials for this year’s annual meeting. Other stockholders were instead sent paper copies of the proxy materials accessible on the Internet. Instructions on how to access the proxy materials over the Internet or to request a paper copy can be found in the Internet Availability Notice. In addition, stockholders may request to receive proxy materials in printed form by mail or electronically by email on an ongoing basis by going to www.proxyvote.com and following the instructions or calling 1-800-690-6903. A stockholder’s election to receive proxy materials by mail or e-mail will remain in effect until the stockholder terminates or changes such election.

Please note that you cannot vote your shares by filling out and returning the Internet Availability Notice. The Internet Availability Notice does, however, include instructions on how to vote your shares.

If your shares are registered directly in your name with our transfer agent, you are considered, with respect to those shares, the “stockholder of record.” In that case, ~~either the Internet Availability Notice or~~ the Notice of Annual Meeting, this proxy statement and our Annual Report on Form 10-K for the fiscal year ended December 31, ~~2021~~2022 have each been sent directly to you.

If your shares are held in a stock brokerage account or by a bank or other holder of record, you are considered the “beneficial owner” of shares held in street name. In such case, either a notice similar to the ~~Internet Availability Notice or the~~ Notice of Annual Meeting, this proxy statement and our Annual Report on Form ~~10-K~~10 K for the fiscal year ended December 31, ~~2021~~2022 should have been provided (or otherwise made available) to you by your broker, bank or other holder of record who is considered, with respect to those shares, the stockholder of record. As the beneficial owner, you have the right to direct your broker, bank or other holder of record on how to vote your shares by following their instructions for voting.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE ANNUAL MEETING OF STOCKHOLDERS OF ENERGY VAULT HOLDINGS, INC. TO BE HELD ON MAY 25, 2023:

This Proxy Statement, our Annual Report to Stockholders for the fiscal year ended December 31, 2022 and the proxy card are first being mailed to our stockholders on or about April 17, 2023. In accordance with the rules of the SEC, we are advising our stockholders of the availability on the Internet of our proxy materials related to our upcoming Annual Meeting. Because we have elected to utilize the “full set delivery” of materials option, we are delivering to all stockholders paper copies of all our proxy materials, as well as providing access to those proxy materials on a publicly accessible website. This Proxy Statement and our Annual Report on Form 10-K for the fiscal year ended December 31, 2022 are available to our stockholders at https://investors.energyvault.com/financials/sec-filings/default.aspx.

A copy of our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, as filed with the SEC, except for exhibits, will be furnished without charge to any of our stockholders upon written request to Energy Vault Holdings, Inc., 4360 Park Terrace Drive, Suite 100, Westlake Village, California, 91361, Attention: Mr. Josh McMorrow, Secretary. This Proxy Statement and our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, are also available on the SEC’s website at www.sec.gov.

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PROPOSAL 1: ELECTION OF ~~TWO~~THREE DIRECTORS

✓

~~OUR BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT THE STOCKHOLDERS VOTE “FOR” THE RE-ELECTION OF EACH OF THE CLASS I DIRECTOR NOMINEES LISTED BELOW.~~

✓

OUR BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT THE STOCKHOLDERS VOTE “FOR” THE RE-ELECTION OF EACH OF THE CLASS II DIRECTOR NOMINEES LISTED BELOW.

General

Our Second Amended and Restated Certificate of Incorporation (our “Certificate of Incorporation”) provides for a classified board of directors consisting of three classes of directors, with each class serving staggered three-year terms and a nearly equal number of board members in each class, as determined by our Board. As a result, a portion of our Board of Directors will be elected each year. Our Board of Directors has nominated ~~Larry Paulson~~Zia Huque, Theresa Fariello and ~~Mary Beth Mandanas~~Thomas Ertel as Class III directors with a term that would expire at ~~this~~the 2026 annual meeting of stockholders. ~~Tahsinul Zia Huque, Henry Elkus~~Larry Paulson and ~~Thomas Ertel~~Mary Beth Mandanas have been designated Class III directors, and their term expires at the ~~2023~~2025 annual meeting of stockholders. Robert Piconi and Bill Gross have been designated Class III directors, and their term expires at the 2024 annual meeting of stockholders.

On the recommendation of the nominating and corporate governance committee of our Board of Directors, our Board of Directors, including its independent directors, selected and approved ~~Larry Paulson~~Zia Huque, Theresa Fariello and ~~Mary Beth Mandanas~~Thomas Ertel as nominees for election as Class III directors, the class being elected at the Annual Meeting, each to serve for a term of three years, expiring at the ~~2025~~2026 annual meeting of the stockholders or until his successor is duly appointed or elected and qualified or until his earlier death, resignation or removal. We are not aware of any arrangements or understandings between the director nominees and any other person pursuant to which such persons were selected as a director nominee.

~~Larry Paulson~~Zia Huque, Theresa Fariello and ~~Mary Beth Mandanas~~Thomas Ertel currently serve as members of our Board of Directors and have agreed to serve if elected. In the event the nominees named herein are unable to serve or decline to serve at the time of the Annual Meeting, the persons named in the enclosed proxy will exercise discretionary authority to vote for substitutes. Unless otherwise instructed, the proxy holders will vote the proxies received by them FOR the nominees. The proxy cannot be voted for a greater number of persons than ~~two.~~three.

Recommendation of the Board of Directors

Our Board of Directors unanimously recommends that the stockholders vote FOR the election of the Class III director nominees, ~~Larry Paulson~~Zia Huque, Theresa Fariello and ~~Mary Beth Mandanas.~~Thomas Ertel. Unless otherwise instructed, the proxy holders will vote the proxies received by them FOR the election of all the Class III director nominees.

Directors and Nominees

The following table and biographical information sets forth certain information about ~~Larry Paulson~~Zia Huque, Theresa Fariello and ~~Mary Beth Mandanas~~Thomas Ertel as well as the continuing directors. Such information is current as of ~~November 2, 2022.~~April 17, 2023. The information presented below for each director includes the specific experience, qualifications, attributes and skills that led us to the conclusion that such director should be nominated to serve on our Board of Directors in light of our business. There is no family relationship between any of our executive officers, directors, or director nominees.

Name	Age	Position	Director Since	Age	Position	Director Since
Robert Piconi	52	Chief Executive Officer and Director	2017	52	Chief Executive Officer and Director	2022
Larry M. Paulson	69	Director	2021	69	Director	2021
Henry Elkus	27	Director	2022
Theresa Fariello				62	Director	2023
Bill Gross	64	Director	2017	64	Director	2022
Zia Huque	54	Director	2021	55	Director	2022
Thomas Ertel	67	Director	2022	67	Director	2022
Mary Beth Mandanas	56	Director	2022	57	Director	2022

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Nominees for Election to the Board of Directors ~~(Class~~Class II Directors

Zia Huque has been a member of our Board of Directors since 2022. Mr. Huque has also served as a General Partner for Prime Movers Lab LLC since January 2021. Mr. Huque currently serves on the board of trustees of Equity Residential Properties Trust (NYSE:EQR) and LankaBangla Finance Ltd. which are both public listed entities. Mr. Huque also serves on the boards of directors of various privately held entities that are Prime Movers Lab LLC related investments. Prior to Prime Mover Labs, Mr. Huque was a private investor from 2019 to 2021. Prior to private investing, Mr. Huque served as President and Chief Executive Officer for Deutsche Bank Securities Inc. from 2018 to 2019, as Head of Equities, Fixed Income & Currencies, for the Americas from 2016 to 2018, and as Global Co-Chief Operating Officer of Corporate Banking & Securities from 2012 to 2016. Mr. Huque holds a B.A. in Economics and in Political Science from Williams College. We believe Mr. Huque is well qualified to serve as a director because of his vast executive, strategic and operational experience across multiple businesses.

Theresa Fariello has been a member of our Board of Directors since 2023. She has served as Senior Vice President of Government Affairs & Global Public Policy for United Airlines (Nasdaq: UAL) since 2017. In this role, she leads United Airlines’ federal, state, local, and international government engagement, including environmental affairs. Prior to her role at United Airlines, Ms. Fariello served a 16-year tenure at ExxonMobil (NYSE: XOM), where she advised executive leadership on key governmental and policy matters. Prior to her time at ExxonMobil, Ms. Fariello served as Deputy Assistant Secretary for International Energy Policy in the Office of International Affairs at the U.S. Department of Energy and held senior leadership positions at Occidental Petroleum Corporation (NYSE:OXY). Ms. Fariello received her undergraduate degree in political science from George Washington University. She also holds a Master of Laws in International and Comparative Law from Georgetown University Law Center, as well as a Juris Doctorate from George Mason University School of Law. We believe Ms. Fariello is well qualified to serve as a director because of her substantial experience in government affairs and public policy at leading public companies.

Thomas Ertel has been a member of our Board of Directors since 2022. He was a Partner at Ernst & Young, LLP, an accounting firm, from June 2002 until his retirement from full-time employment in June 2017. Prior to that, Mr. Ertel spent 25 years, including 13 years as Partner, with Arthur Andersen, LLP, an accounting firm. Since October 2017, Mr. Ertel has served as Senior Vice President and Chief Accounting Officer of Strada Education Network, a nonprofit organization that strengthens America’s pathways between education and employment. From December 2017 through September 2021, he served as a director on the board of directors of Blackbaud, Inc. (Nasdaq:BLKB). He holds a BS in Accounting from Ball State University and has maintained an active CPA license in the State of Indiana since 1980. We believe Mr. Ertel is well qualified to serve as a director because of his management skills and because of his knowledge and experience in accounting and corporate transactions.

Class I ~~Directors)~~Directors

Larry Paulson has served as a member of our Board of Directors since 2021 and previously served as Novus Capital Corporation II director and Novus Capital Corporation II non-executive Chairman from its inception until 2022. Mr. Paulson co-founded Novus Capital Corporation and has served as its Chief Executive Officer and a director since its inception in March 2020 until its business combination with AppHarvest, Inc. (Nasdaq: APPH) in January 2021. Mr. Paulson has served as a managing member of Novus Capital Associates, LLC since its formation in October 2020. He has also served as principal and founder of Rancho Santa Fe Solutions, a wireless industry consulting company he founded in February 2010. From 2013 to January 2020, Mr. Paulson was with Qualcomm (Nasdaq:QCOM) where he served as Vice President of Product Management ~~(2013-16)~~(2013 – 16), Vice President and President India and SAARC ~~(2016-2018)~~(2016 – 2018) and Vice President Sales NA and Australia ~~(2018-Jan~~(2018 – Jan 2020). Prior to Qualcomm, he served as Executive Vice President and Chief Marketing Officer of Brightpoint, Inc., a provider of worldwide distribution and integrated logistics services to the wireless communications industry, from 2011 to 2013. Prior to that he served with Nokia (NYSE:NOK) from 1987 to 2009 where he had numerous roles including global Senior Vice President and General Manager CDMA Product line. Mr. Paulson holds a BA in Communications from Point Park University. We believe Mr. Paulson is well qualified to serve as a director because of his more than thirty years of global senior management positions in the tech industry with expertise in wireless communications.

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Mary Beth Mandanas has served as a member of our Board of Directors since 2022. MsMs. Mandanas currently serves as Chief Executive Officer for Onyx Renewable Partners L.P., having begun this role in January 2022. Since July 2021, Ms. Mandanas has served as an Independent Director, Audit Chair, on the Board of TortoiseEcofin Acquisition Corp ~~III.~~III (NYSE: TRTL). From August 2020 to August 2021, she consulted and served as Chief Investment Officer for Sol Systems, LLC, a renewable energy infrastructure and impact investment company based in Washington, DC. Previously, from the fall of 2015 to May 2020, Ms. Mandanas held the position of Executive Vice President, Chief Strategy Officer, of CleanChoice Energy, Inc., a company engaged in renewable energy retail supply and community solar, where she led strategic planning and was responsible for raising capital, banking/investor relations and establishing protocols for risk management and financial reporting. Prior to joining CleanChoice Energy in 2015, Ms. Mandanas worked in corporate and investment banking for more than 20 years, principally focused in the power and utility sector and executing across multiple facets of corporate finance/strategic advisory transactions, which included capital raising, structured financings, liability/interest rate/commodity risk management, treasury operations, capital allocation strategies, dividend policy and mergers and acquisitions. From 2013 to the fall of 2015, she served as Head of the Power/Utility Group in Corporate Banking at RBC Capital Markets, LLC, where she helped form the renewable tax equity business and grow the renewable loan portfolio. Prior to RBC Capital Markets, Ms. Mandanas served as Managing Director in Citigroup’s North American Power/Utility Corporate and Investment Banking Group from 2007 to 2013. From 1998 to 2007, Ms. Mandanas held various roles at Credit Suisse in the Power and Utility Investment Banking Group and in the Leveraged Finance/Financial Sponsors Group. She has worked across many industries, including companies in the power and utilities, textiles, chemicals, general industrials and education sectors. Additionally, Ms.Mandanas also spearheaded various diversity initiatives at Credit Suisse and was successful in establishing an annual leadership conference for female clients. Prior to joining Credit Suisse, she was a Vice President at NationsBank in New York. Additionally, Ms. Mandanas served on the Board of Trustees for the Business Partnership Foundation for the University of South Carolina for five years. Ms. Mandanas earned her M.B.A degree from Vanderbilt University and graduated, magna cum laude, with a B.S. from the University of South Carolina. We believe Ms. Mandanas is well qualified to serve as a director because of her significant experience and knowledge in finance, risk management, investment banking, business and work with companies involved in renewable energy and other areas of the energy industry.

~~Class II Directors~~

~~Tahsinul Zia Huque~~ has been a member of our Board of Directors since 2022. Mr. Huque has also served as a General Partner for Prime Movers Lab LLC since January 2021. Mr. Huque currently serves on the board of trustees of Equity Residential Properties Trust and LankaBangla Finance Ltd. which are both public listed entities. Mr. Huque also serves on the boards of directors of various privately held entities that are Prime Movers Lab LLC related investments. Prior to Prime Mover Labs, Mr. Huque was a private investor from 2019 to 2021. Prior to private investing, Mr. Huque served as President and Chief Executive

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Officer for Deutsche Bank Securities Inc. from 2018 to 2019, as Head of Equities, Fixed Income & Currencies, for the Americas from 2016 to 2018, and as Global Co-Chief Operating Officer of Corporate Banking & Securities from 2012 to 2016. Mr. Huque holds a B.A. in Economics and in Political Science from Williams College. We believe Mr. Huque is well qualified to serve as a director because of his vast executive, strategic and operational experience across multiple businesses.

~~Henry Elkus~~ has been a member of our Board of Directors since 2022. Mr. Elkus is the founder of Helena and has served as its Chief Executive Officer since their inceptions (September 2015 for the Helena Group Foundation and January 2020 for Helena Special Investments). Mr. Elkus has also served as Social Entrepreneur in Residence for The Boston Consulting Group since 2016 and as Special Advisor for the Berggruen Institute since 2016. In 2020, Mr. Elkus was named to the 2020 Forbes 30 Under 30 list. Mr. Elkus studied at Yale University before dropping out to lead Helena full time. We believe Mr. Elkus is well qualified to serve as a director because of his substantial business experience addressing elements of governance reform, exponential technologies and existential risk mitigation.

~~Thomas Ertel~~ has been a member of our Board of Directors since 2022.He was a Partner at Ernst & Young, LLP, an accounting firm, from June 2002 until his retirement from full-time employment in June 2017. Prior to that, Mr. Ertel spent 25 years, including 13 years as Partner, with Arthur Andersen, LLP, an accounting firm. Since October 2017, Mr. Ertel has served as Senior Vice President and Chief Accounting Officer of Strada Education Network, a nonprofit organization that strengthens America’s pathways between education and employment. From December 2017 through September 2021, he served as a director on the board of directors of Blackbaud, Inc. He holds a BS in Accounting from Ball State University and has maintained an active CPA license in the State of Indiana since 1980. We believe Mr. Ertel is well qualified to serve as a director because of his management skills and because of his knowledge and experience in accounting and corporate transactions.

Class III Directors

Robert Piconi is co-founder of Energy Vault, Inc., has served as our Chief Executive Officer and as our director since 2022. Mr. Piconi has also served as the chairman of the board for Chronos Imaging LLC since 2017 and as member of the board of directors of Healthcare AI Acquisition Corp (Nasdaq: HAIA) since November 2021. Prior to Energy Vault, Mr. Piconi was founder and CEO of Medical Equipment Solutions & Applications (MESA) Group Holdings, which was acquired by London-based Private Equity firm Permira in 2014, becoming Pantheon Healthcare Group and later Althea Group where he served as its Chief Executive Officer and a member of its board from 2014 to 2016. Prior to Pantheon Healthcare Group, Mr. Piconi served as Group Executive for the Network Software and Security Platform group companies at Danaher Corporation (NYSE:DHR) from 2012 to 2014. Mr. Piconi’s earlier experience included roles of increasing responsibility at large Fortune 500 public companies, including the diversified energy group Amoco Corporation and British Petroleum (NYSE: BP) after its merger with Amoco in 1998, followed by executive leadership roles of increasing responsibility at Bell Labs Lucent Technologies (now Nokia, NASDAQ: NOK) and as President and Chief Operating Officer at Spirent Communications (LSE:SPT) within the telecommunications network infrastructure industry. Mr. Piconi holds a ~~B.S./~~B.B.A. from the University of Notre Dame and an M.B.A. from Northwestern University’s Kellogg School of Management. Energy Vault believes Mr. Piconi is qualified to serve as a member of the Board of Directors due to his extensive executive management and leadership experience across a variety of energy and technology companies. We believe Mr. Piconi is well qualified to serve as a director because of his prior leadership roles in Fortune 100 public companies.

Bill Gross is co-founder of Energy Vault, Inc. and has served as our a director since 2022. Mr. Gross co-founded Idealab Studio, ~~LCC~~LLC and has served as its Chairman and Chief Executive Officer since 2018. Mr. Gross also served as Chief Executive Officer of Idealab, a technology incubator he founded, from February 1996 to December 31, 2017. Additionally, Mr. Gross ~~has~~ served as Chairman of the board for Heliogen, Inc. (NYSE: HLGN) ~~since~~from 2015 to 2023 and ~~has served~~ as a member of its board ~~since 2013. In addition, Mr. Gross has served as the~~and Chief Executive Officer ~~for Heliogen, Inc. since 2013.~~from 2013 to 2023. Mr. Gross has more than 40 years of experience in conceiving and starting new technology companies, including GoTo.com/Overture.com, Energy Vault, Inc., Carbon Capture, Inc., and CarsDirect.com/Internet Brands, Inc. In addition to continuing to serve as Idealab’s board chairman since 1996, Mr. Gross serves on the boards of directors of numerous companies and is also a member of the Board of Trustees of Caltech. We believe Mr. Gross is well qualified to serve as a director because of his substantial business, leadership and management experience.

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CORPORATE GOVERNANCE

We are committed to continually enhancing our strong corporate governance practices, which we believe helps us sustain our success and build long-term value for our stockholders. Our Board of Directors sets high standards for our employees, officers and directors. Implicit in this philosophy is the importance of sound corporate governance. It is the duty of the Board of Directors to serve as a prudent fiduciary for shareholders and to oversee the management of the Company’s business. Our governance structure enables independent, experienced and accomplished directors to provide advice, insight, guidance and oversight to advance the interests of the Company and our stockholders.

Affirmative Determinations Regarding Director and Nominee Independence

The Corporate Governance Guidelines adopted by our Board of Directors provide that a majority of the members of the Board of Directors, and each member of the audit, compensation and nominating and corporate governance committees, must meet the independence requirements set forth therein. The full text of the Corporate Governance Guidelines, including the independence requirements, is available for your review in the Governance Documents section of our website at https://investors.energyvault.com/governance. For a director to be considered independent, our Board of Directors must determine that a director meets the independent director qualification standards set forth in the Corporate Governance Guidelines, which comply with the New York Stock Exchange Listed Company Manual definitions of independent, and is free from any material relationship with us and our executive officers. Our Board of Directors considers all relevant facts and circumstances known to it in making an independence determination, and not merely from the standpoint of the director, but also from that of persons or organizations with which the director has an affiliation or significant financial ~~interest~~interest.

Based upon information requested from and provided by each director concerning his or her background, employment, and affiliations, including family relationships, our Board of Directors has determined that each of Larry M. Paulson, ~~Henry Elkus,~~Theresa Fariello, Bill Gross, Zia Huque, Thomas Ertel and Mary Beth Mandanas, representing six of our seven directors do not have a relationship that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director and is “independent” as that term is defined under the rules of the NYSE. In making this determination, our Board of Directors considered the relationships that each non-employee director has with us and all other facts and circumstances our Board of Directors deemed relevant in determining independence, including the beneficial ownership of our common stock by each non-employee director and the relationship of certain non-employee directors with certain of our significant stockholders.

Each member of our Board of Directors serving on our audit, compensation and nominating and corporate governance committees is “independent” within the meaning of the applicable rules of the NYSE and, as applicable, the Securities Exchange Act of 1934, as amended (the “Exchange Act”).

Background and experience of directors

Our nominating and corporate governance committee is responsible for reviewing with our Board of Directors, on an annual basis, the appropriate characteristics, skills and experience required for the Board as a whole and its individual members. In evaluating the suitability of individual candidates (both new candidates and current members), the nominating and corporate governance committee, in recommending candidates for election, and the Board of Directors, in approving (and, in the case of vacancies, appointing) such candidates, will take into account many factors, including the following:

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personal and professional integrity;

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ethics and values;

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experience in corporate management, such as serving as an officer or former officer of a publicly held company;

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experience in the industries in which we compete;

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experience as a board member or executive officer of another publicly held company;

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diversity of background and expertise and experience in substantive matters pertaining to our business relative to other board members;

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conflicts of interest; and

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practical and mature business judgment.

Role of the Board in risk oversight

Our Board of Directors has an active role, as a whole and also at the committee level, in overseeing the management of our risks. Our Board of Directors is responsible for general oversight of risks and regular review of information regarding our risks, including credit risks, liquidity risks, and operational risks. The compensation committee is responsible for overseeing the management of risks relating to our executive compensation plans and arrangements. The compensation committee, in consultation with management, has reviewed the design and operation of our compensation arrangements and evaluated the relationship between our risk management policies and practices and these arrangements. As a result of this review, the compensation committee has determined that our compensation policies and practices are not reasonably likely to have a material adverse effect on us. The audit committee is responsible for overseeing the management of risks relating to accounting matters, financial reporting, and privacy and cybersecurity. The nominating and corporate governance committee is responsible for overseeing the management of risks associated with the independence of our Board of Directors and potential conflicts of interest. Although each committee is responsible for evaluating certain risks and overseeing the management of such risks, the entire Board of Directors is regularly informed about such risks through discussions from committee members. We believe that our Board’s leadership structure supports effective risk management because it allows independent directors at the board level and on our committees to exercise oversight over management.

Board Leadership Structure

The Board of Directors does not have a policy regarding the separation of the roles of Chief Executive Officer and Chairman of the Board of Directors, as the Board of Directors believes it is in the best interests of the Company to make that determination based on the position and direction of the Company and the membership of the Board of Directors. The Board of Directors has determined that having Robert Piconi serve as Chairman is the best use of his extensive knowledge of the Company and its industry and serves to foster greater communication between the Company’s management and the Board of Directors.

Lead Independent Director

As part of our continued efforts to ensure a strong, independent and active Board of Directors, we have designated a Lead Independent Director, who serves as the principal liaison between independent directors and the Chairperson and senior management, as well as the lead approver of all agendas, meetings and related information. We believe this role is integral to providing effective oversight of management and strong leadership of the independent directors. Larry Paulson currently serves as our lead independent director.

Attendance at Meetings

During the year ended December 31, ~~2021,~~2022, our Board of Directors met ~~five~~four times. Each member of the Board of Directors attended ~~at least 75 percent~~all of the meetings of our Board of Directors and the meetings of any of our board committees on which each member of the Board of Directors served that were held during the term of each such director. Our Board of Directors and each of the board committees also acted by way of various unanimous written consents during the year ended December 31, ~~2021.~~2022. In addition, the compensation committee, the audit committee and the Board of Directors met, at times, without management present in executive session.

Although we do not have a formal policy regarding attendance by members of our Board of Directors at our Annual Meeting of Stockholders, we encourage our directors to attend. We anticipate that at least a majority of our Board of Directors will attend the Annual Meeting in ~~2022.~~2023.

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it deems necessary or desirable. Members serve on these committees until their resignation or until otherwise determined by our Board of Directors.

The current composition of each Board committee is set forth below.

Director

Compensation
Committee

Audit
Committee

Nominating and
Corporate
Governance
Committee

Robert Piconi*

Larry M. Paulson

✓

~~Henry Elkus~~Theresa Fariello

✓

Bill Gross

Zia Huque

✓

Thomas Ertel

✓

Mary Beth Mandanas

✓

Member

Chairperson

Chairman of the Board

Audit committee

Our audit committee consists of Thomas Ertel, Mary Beth Mandanas and Zia Huque, each of whom our Board of Directors has determined satisfies the independence requirements for audit committee members under the rules and regulations of the SEC and the listing standards of the NYSE applicable to audit committee members. Each member of our audit committee qualifies as an audit committee financial expert within the meaning of SEC regulations and meet the financial sophistication requirements of the NYSE. The chair of our audit committee is Mr. Ertel, who our Board of Directors has determined is an “audit committee financial expert”, within the meaning of SEC regulations and meets the financial sophistication requirements of the NYSE. Our audit committee held ~~five~~four meetings in ~~2021.~~2022.

Our audit committee is responsible for, among other things:

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assisting our Board of Directors with its oversight of the following: the integrity of our financial statements; our compliance with legal and regulatory requirements; the qualifications, independence, and performance of our independent registered public accounting firm; the design and implementation of our internal audit function, and risk assessment and risk management;

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appointing, compensating, retaining, overseeing and, where appropriate, replacing the independent auditor engaged for the purpose of preparing or issuing an audit report or performing other audit, review, or attest services for us;

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overseeing and, at least annually, evaluating the qualifications and performance of the independent auditor engaged for the purpose of preparing or issuing an audit report or performing other audit, review, or attest services for us;

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reviewing and resolving any disagreements that may arise between management and the independent auditor regarding financial reporting or internal control over financial reporting;

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evaluating the independence of the independent auditor;

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reviewing and approving, in advance, the scope and plans for the audits and the audit fees;

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and recommending to the Board whether the audited financial statements should be included in our Form 10-K; the results of the independent audit and the quarterly reviews of our financial statements, and the independent auditor’s opinion on the audited financial statements; the reports and certifications regarding internal control over financial reporting and disclosure controls and procedures; major issues regarding accounting principles and financial statement presentation; analyses prepared by management or the independent auditor setting forth significant financial reporting issues and judgments made in connection with the preparation of the financial statements; the effect of regulatory and accounting initiatives, as well as off-balance sheet structures, on our financial statements;

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reviewing and discussing reports from the independent auditor;

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reviewing and overseeing our cash management, investing activities, and tax planning and compliance, and approving policies related to these matters, if any;

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preparing the audit committee report;

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reviewing, in general, earnings press releases, and reviewing and discussing with management and the independent auditors policies with respect to earnings press releases and the type and presentation of information to be included therein, financial information and earnings guidance provided to the public, analysts, and rating agencies;

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reviewing and discussing with management, the internal auditors, if applicable, and the independent auditor the adequacy and effectiveness of our internal controls;

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reviewing and discussing the adequacy and effectiveness of our disclosure controls and procedures;

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reviewing management’s plans, if any, with respect to the responsibilities, budget, and staffing of the internal audit function and our plans for the implementation of the internal audit function, which may be outsourced to external service providers; reviewing and discussing the results of the internal audit, significant issues in internal audit reports, and responses by management; reviewing and discussing the performance and effectiveness of the internal audit function;

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reviewing, with counsel, legal or regulatory matters that could have a material impact on our financial statements;

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establishing and overseeing procedures for the receipt, retention, and treatment of complaints received by our reporting accounting, internal accounting controls, or auditing matters, as well as for confidential and anonymous submissions by our employees concerning questionable accounting or auditing matters;

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overseeing the management of risks associated with our financial reporting, accounting, and auditing matters;

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reviewing and overseeing all transactions between us and a related person (as defined in Item 404 of Regulation S-K), in accordance with our policies and procedures;

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setting hiring policies with regard to our hiring employees and former employees of the independent auditor and oversee compliance with such policies.

Our audit committee operates under a written charter that satisfies the applicable listing standards of the NYSE and is available on the governance section of our website at www.energyvault.com.

Compensation committee

Our compensation committee consists of Larry Paulson, Zia Huque and Thomas Ertel, with Mr. Paulson serving as chair. Our Board of Directors has determined that each of the compensation committee members is a non-employee member of our Board of Directors as defined in Rule 16b-3 under

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The compensation committee is responsible for, among other things:

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review annually and determining and approving the form and amount of compensation to be paid or awarded to the Chief Executive Officer and, in consultation with the Chief Executive Officer, determining the form and amount of compensation to be paid or awarded to all other executive “officers,” as defined in the rules promulgated under Section 16 Exchange Act;

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establishing annually corporate goals and objectives relevant to compensation for the Chief Executive Officer;

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evaluating annually the Chief Executive Officer’s performance against any corporate goals and objectives relevant to the Chief Executive Officer’s compensation;

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establishing annually corporate goals and objectives relevant to compensation, in consultation with the Chief Executive Officer, for other executive officers.

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evaluating annually, in consultation with the Chief Executive Officer, other executive officer performance against any corporate goals and objectives relevant to such officers’ compensation;

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administering and, if determined to be necessary, amend our 401(k) plan, deferred compensation plan if any, and any other material compensation plan;

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recommend to the Board, for approval by the Board, the form and amount of cash- and equity-based and other compensation to be paid to the non-employee members of the Board;

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reviewing periodically and making recommendations to the Board with respect to adoption and approval of, or amendments to, our stock plans;

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administering and interpreting the stock plans;

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as and when required by applicable rules and regulations, participating in the preparation of the Compensation Discussion and Analysis to be included in our filings with the ~~Securities and Exchange Commission~~SEC and generally overseeing our compensation-related disclosure;

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overseeing our submission to, and consider the results of, stockholder votes of matters relating to compensation;

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overseeing our compliance with legal and regulatory requirements associated with compensation of our executive officers, other employees, and non-employee directors, and coordinating as needed with the Board or other committees of the Board on matters requiring such coordination;

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overseeing the management of risks associated with our compensation policies and programs, including an annual review of our risk management processes related to our compensation programs;

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periodically reviewing and revising a peer group of companies against which to assess our compensation programs and practices to ensure that they are competitive and supportive of our strategy and objectives;

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establishing the terms of, amending and overseeing the application of our policy for clawback, or recoupment, of incentive compensation;

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overseeing engagement with stockholders and proxy advisory firms on executive compensation matters;

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assisting the Board in its oversight of the development, implementation and effectiveness of our policies and strategies relating to our human capital management function.

Subject to the terms of our compensation plans, our compensation committee has discretion to determine the amount, form, structure and implementation of compensation payable to our executive officers, including, where appropriate, discretion to increase or decrease awards or to award compensation absent the attainment of performance goals and to award discretionary cash compensation outside of the

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parameters of our compensation plans. In exercising such discretion, our compensation committee consults with our management and may engage an independent compensation consultant. Our Chief Executive Officer annually reviews the performance of each of the other executive officers relative to individual and corporate annual performance goals established for the year. Our Chief Executive Officer then presents his compensation recommendations based on these reviews to our compensation committee. To the extent permitted by and consistent with applicable law and the provisions of a given equity-based plan, our compensation committee may delegate to one or more officers the power to grant options or other stock awards pursuant to such equity-based plan to our employees or any of our subsidiaries who are not our directors or our executive officers.

Our compensation committee operates under a written charter that satisfies the applicable listing standards of the NYSE and is available on the governance section of our website at www.energyvault.com.

Role of Compensation Consultants

Our compensation committee uses the services of external compensation consultants to obtain relevant information on compensation practices and trends within the peer group and among the broader market.

Our compensation committee has engaged Ernst & Young LLP (“EY”) as its compensation consultant. EY was engaged by, and reports directly to, our compensation committee. Management did not participate in the selection process for our compensation committee’s compensation consultant. Our compensation committee is not aware of any conflict of interest on the part of EY or any factor that would otherwise impair the independence of EY relating to the services it performed for our compensation committee.

In its advisory role, EY assisted our compensation committee in the design and implementation of our executive and director compensation programs. This included advising our compensation committee with respect to the competitiveness of our executive and director compensation program in comparison to industry practices, and the identification of any trends in executive and director compensation in our peer group. Our compensation committee considered market comparison data and peer group data in making compensation decisions for 2022. EY also assisted our compensation committee in selecting the key elements to include in our compensation program and the establishment of performance targets.

EY was also engaged by management to perform other services for us, which consisted of assisting management with accounting, tax and technical matters around the merger of Energy Vault, Inc. and Novus Capital Corporation II. The aggregate fees for these services in the fiscal year ended 2022 amounted to $2,194,307. The compensation committee did not participate in the selection of EY to perform these additional services.

Nominating and corporate governance committee

Our nominating and corporate governance committee consists of Mary Beth Mandanas, ~~Henry Elkus~~Theresa Fariello and Larry Paulson, with Ms. Mandanas serving as chair. The composition of our nominating and governance committee meets the requirements for independence under the rules and regulations of the SEC and the

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reviewing and evaluating any stockholder nominees for director submitted in accordance with our bylaws and any candidates for the Board recommended by stockholders in accordance with our policies and procedures for director candidates;

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identifying, considering, and recommending candidates to fill new positions or vacancies on the Board;

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reviewing and making recommendations to the Board on the appropriateness of continued director service by any director who submits a letter of resignation to the Board in accordance with the corporate governance guidelines;

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periodically reviewing the composition of each board of directors committee and making recommendations to the Board for the creation of additional Board committees or the change in mandate or dissolution of Board committees;

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recommending to the Board persons to be members and chairpersons of the Board committees;

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overseeing the other Board committees’ annual review and assessment of the adequacy of their charters and annual evaluation of the performance of such committees;

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developing and recommending to the Board the corporate governance guidelines and periodically reviewing the effectiveness of the corporate governance guidelines approved by the Board of directors and recommending proposed changes to the Board of directors;

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reviewing proposed changes to our certificate of incorporation and bylaws and making recommendations to the Board;

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reviewing stockholder proposals relating to corporate governance and other matters and recommending to our Board response to such proposals;

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overseeing the management of risks associated with director independence, conflicts of interest, Board composition and organization, and director succession planning;

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reviewing periodically the succession planning for the Chief Executive Officer and other executive officers, reporting the findings and recommendations to the Board, and working with the Board in evaluating potential successors to these positions;

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periodically reviewing our code of conduct approved by the Board and recommending proposed changes to the Board;

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reviewing actual and potential conflicts of interest, including potential taking of “corporate opportunities” by insiders, Board of Directors members, and corporate officers, other than related party transactions reviewed by the audit committee of the Board, and approving or prohibiting any involvement of such persons in matters that may involve a conflict of interest or the taking of a corporate opportunity;

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making recommendations for director orientation and continuing education programs;

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Board of Directors or compensation committee (or other committee performing equivalent functions) of any entity that has one or more executive officers serving on our Board of Directors or compensation committee.

The Company’s Director Nomination Process

As indicated above, our nominating and corporate governance committee oversees the director nomination process. This committee is responsible for assisting the Board of Directors in establishing minimum qualifications for director nominees, including qualities and skills that members of our Board of Directors are expected to possess.

Our nominating and corporate governance committee identifies and evaluates individuals qualified to become members of our Board of Directors. Our nominating and corporate governance committee then recommends that our Board of Directors select the director nominees for the election at the next annual meeting of stockholders, or to fill vacancies on our Board of Directors occurring between annual meetings of the stockholders.

We believe it is important to have an appropriate mix of diversity for the optimal functionality of the Board of Directors. Our nominating and corporate governance committee charter requires that the committee consider each candidate’s qualities and skills and our nominating and corporate governance committee considers each candidate’s character, judgment, diversity, gender, age, independence, expertise, experience, length of service, other commitments and the like, as approved by the Board of Directors in our policies and procedures for director candidates. The Board of Directors believes it is important for each member of the Board of Directors to possess skills and knowledge in the areas of leadership of large, complex organizations; finance; strategic planning; laws and regulations; government relations; and relevant industries, especially the ecommerce space. These considerations help ensure that the Board of Directors as a whole has the appropriate mix of diversity, characteristics, skills and experiences for the optimal functioning of the Board of Directors in its oversight of our Company. As part of its periodic self-assessment process, the nominating and corporate governance committee reviews and evaluates its performance, including overall composition of the Board of Directors and the criteria that it uses for selecting nominees in light of the specific skills and characteristics necessary for the optimal functioning of the Board of Directors in its oversight of our Company. The nominating and corporate governance committee considers all of the criteria described above, including the candidate’s diversity, in identifying and selecting nominees and in the future may establish additional minimum criteria for nominees.

General Nomination Right of All Stockholders. Any stockholder may nominate one or more persons for election as a director at an annual meeting of stockholders if the stockholder complies with the notice, information and consent provisions contained in our Amended and Restated Bylaws (our “Bylaws”). In order for a stockholder’s director nomination to be timely, the stockholder must deliver written notice to our secretary at the principal executive offices of the Company not less than ninety (90) days nor more than one hundred and twenty (120) days prior to the first anniversary of the preceding year’s annual ~~meeting (which date shall, for purposes of this annual meeting of stockholders, deemed to have occurred on June 15, 2021 as provided in Section 1.10(b) of our Bylaws);~~meeting; provided, however, that in the event that the date of the annual meeting in any other year is advanced by more than thirty (30) days, or delayed by more than

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Shareholder Engagement

Management and directors engage with our stockholders throughout the year in a variety of forums. Our interactions cover a broad range of governance and business topics, including proxy access, Board elections, compensation practices, peer group composition and business strategy. Our engagement activities and meaningful exchanges to which we have been exposed provide us with a valuable understanding of our shareholders’ perspectives and an opportunity to share views with them. We look forward to maintaining an open line of dialogue with our shareholders.

We encourage you to visit the Governance area of our website (https://investors.energyvault.com/governance) where you will find detailed information about our corporate governance practices and policies, including our nominating and corporate governance committee charter.

Communications with Directors

Stockholders and any interested party who would like to send communications to our Board of Directors, any Board committee or to any individual director may do so by submitting such communications in writing to ~~Josh McMorrow, c/o Energy Vault Holdings, Inc.,~~the Board of Directors, the Board committee, or the individual director at 4360 Park Terrace Drive, Suite 100, Westlake Village, California, ~~91361.~~91361 or by emailing legal@energyvault.com. We suggest, but do not require, that such submissions include the name and contact information of the stockholder or interested party making the submission and a description of the matter that is the subject of the communication. ~~Mr. McMorrow~~In accordance with instructions from our Board of Directors any such communication will be reviewed by the Chief Legal Officer and, to the extent such communication falls within the scope of matters generally considered by our Board of Directors, then the Chief Legal Officer will distribute such information to our Board of Directors, any Board committee or to any individual director for ~~review. Communications received by the Company may be reviewed by Mr. McMorrow to ensure appropriate and careful~~ review, ~~of the matter.~~as appropriate.

Code of Ethics and Business Conduct

We have adopted a code of ethics and business conduct that applies to all employees, including employees of our subsidiaries, as well as each member of our Board of Directors. The code of ethics and business conduct is available at our website at https://investors.energyvault.com/governance.

We intend to satisfy any disclosure requirement under Item 5.05 of Form 8-K regarding an amendment to, or waiver from, a provision of this code of ethics by posting such information on our website, at the address specified above.

Anti-Hedging and Anti-Pledging Policy

Our Board of Directors has adopted an Insider Trading Policy, which applies to all of our directors, officers and employees. The policy prohibits our directors, officers and employees and any entities they control from purchasing financial instruments such as puts and calls, or otherwise engaging in transactions that hedge or offset, or are designed to hedge or offset, any decrease in the market value of our equity securities, or that may cause an officer, director, or employee to no longer have the same objectives as our other stockholders. In addition, individuals subject to this policy are prohibited from pledging the Company’s securities as collateral to secure loans, without the approval of a compliance officer. Environmental, Social and Governance

We initiated a sustainability strategy in 2022, which began with an assessment to identify priority internal and external non-financial issues. This assessment highlighted environmental, social, and governance (“ESG”) issues important to our internal and external stakeholders so that we can focus on meaningful actions. Our strong dedication to sustainability and environmental, social and governance is reflected by our plan to publish our inaugural 2022 Sustainability Report by the end of the second quarter of 2023, including information on greenhouse gas emissions, environmental impacts, responsible sourcing, governance, social, and community performance metrics.

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PROPOSAL 2: RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

✓

OUR BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT THE STOCKHOLDERS VOTE “FOR” THE RATIFICATION OF THE APPOINTMENT OF BDO USA, LLP AS THE COMPANY’S INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM FOR THE YEAR ENDING DECEMBER 31, 2022.

✓

The audit committee is directly responsible for the appointment, compensation, retention and oversight of the independent external audit firm retained to audit the Company’s financial statements. Our audit committee has selected BDO USA, LLP to serve as our independent registered public accounting firm to audit the consolidated financial statements of Energy Vault Holdings, Inc. for the fiscal year ending December 31, ~~2022.~~2023. As a matter of good corporate governance, we are asking the stockholders to ratify the selection of BDO USA, LLP (“BDO”) as our independent registered public accounting firm for the year ending December 31, ~~2022.~~2023. The affirmative vote of a majority of the Common Stock having voting power present in person or represented by proxy and entitled to vote will be required to ratify the selection of BDO.

Stockholders are not required to ratify the appointment of BDO as our independent registered public accounting firm. If stockholders fail to ratify the appointment, the audit committee will consider whether or not to retain BDO. Even if the appointment is ratified, the audit committee may direct the appointment of a different independent registered public accounting firm at any time during the year if it determines that such a change would be in the best interests of the Company and our stockholders.

Representatives of BDO will be present at the Annual Meeting, will have the opportunity to make a statement if they desire to do so, and will be available to respond to appropriate questions.

BDO has served as our auditor since 2018. A representative of BDO is expected to be present virtually at the annual meeting to respond to appropriate questions and make a statement if he or she so desires.

Principal Accountant Fees and Services

The following table sets forth the aggregate fees billed by BDO for the fiscal years ended December 31, ~~2021~~2022 and December 31, ~~2020:~~2021:

	2021			2020			2022			2021
Audit Fees(1)		$	379,531		$	136,780		$	674,959		$	713,749
Audit Related Fees~~(2)~~			295,041			3,516			—			—
Tax Fees			—			—			—			—
All Other Fees			—			—			—			—
Total		$	674,572		$	140,295		$	674,959		$	713,749

(1)

Audit Fees ~~for 2021 consisted~~consist of fees billed for ~~audit~~professional services ~~primarily related to~~rendered in connection with the audit of our annual financial statements for 2022 and 2021, quarterly reviews of interim consolidated financial ~~statements;~~statements and ~~interim SAS 100 review under US GAAP.~~

~~(2)~~

~~Audit Related fees consisted~~audit services in connection with statutory filings for our international subsidiary. It includes approximately $205,000 and $292,000 for 2022 and 2021, respectively, for issuance of ~~SPAC related costs (S-1, S-4, 8-K filings)~~consents and ~~Swiss statutory financial statement audit.~~professional services provided in connection with registration statements.

Pre-Approval Policies

Our audit committee approved all audit and audit-related fees for services performed by our independent registered public accounting firm during ~~2021.~~2022. The audit committee has audit and non-audit services pre-approval policies and procedures in place. The policies and procedures provide for general pre-approval for a specified range of fees for certain categories of routine services to be provided during a given calendar year. This general pre-approval is automatically renewed at the beginning of each calendar year, unless otherwise determined by the audit committee. If the cost of any proposed service exceeds the amount for which general pre-approval has been established, specific pre-approval by the audit committee is required. Specific pre-approval of services is considered at the regular meetings of the audit committee. The policies and

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AUDIT COMMITTEE REPORT

The audit committee is a committee of the Board of Directors that meets the listing standards of the NYSE and the rules and regulations of the SEC. The audit committee operates under a written charter that satisfies the applicable rules and regulations of the SEC and the listing standards of the NYSE. A copy of the charter of the audit committee is available on our website at https://investors.energyvault.com/~~governance/~~governance. The composition of the audit committee, the attributes of its members and the responsibilities of the audit committee, as reflected in its charter, are intended to be in accordance with applicable requirements for corporate audit committees. The audit committee reviews and assesses the adequacy of its charter and the audit committee’s performance on an annual basis.

The audit committee provides oversight of our accounting and financial reporting process, the audit of our consolidated financial statements, and our internal control function. With respect to our financial reporting process, our management establishes and maintains internal controls and prepares our consolidated financial statements. The independent registered public accounting firm, ~~Marcum~~BDO USA, LLP (“~~Marcum”~~BDO”), performed an independent audit of our consolidated financial statements as of December 31, ~~2021.~~2022. The audit committee oversees these activities. The audit committee does not prepare our financial statements, which is the responsibility of management. The audit committee discussed with the independent registered public accounting firm, ~~Marcum,~~BDO, the matters required to be discussed by applicable requirements of the Public Company Accounting Oversight Board (“PCAOB”) regarding the independent registered public accounting firm’s communications with the audit committee, as well as by SEC regulations.

Consistent with the audit committee’s oversight function, the audit committee has reviewed and discussed the audited financial statements for the fiscal year ended December 31, ~~2021~~2022 with the Company’s management. The audit committee received the written disclosures and the letter from ~~Marcum~~BDO as required by applicable requirements of the PCAOB regarding the independent accountants’ communications with the audit committee concerning independence, and discussed with ~~Marcum~~BDO the accounting firm’s independence.

Based on the audit committee’s review and discussions with management and ~~Marcum,~~BDO, the audit committee recommended to the Board of Directors that the audited financial statements be included in the Annual Report on Form 10-K for the fiscal year ended December 31, ~~2021~~2022 for filing with the SEC.

Respectfully submitted by the members of the audit committee of the board of directors:

AUDIT COMMITTEE
Thomas Ertel (Chair)
Mary Beth Mandanas
Zia Huque
Members of the Audit Committee

This report of the audit committee is required by the SEC and, in accordance with the SEC’s rules, will not be deemed to be part of or incorporated by reference by any general statement incorporating by reference this proxy statement into any filing under the Securities Act of 1933, as amended (“Securities Act”), or under the Exchange Act, except to the extent that we specifically incorporate this information by reference, and will not otherwise be deemed “soliciting material” or “filed” under either the Securities Act or the Exchange Act.

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EXECUTIVE OFFICERS

Below is biographical information for each of our current executive officers as of ~~November 2, 2022,~~April 17, 2023, other than Robert Piconi (whose biographical information is shown under “Proposal 1: Election of ~~Two~~Three Directors”).

Name	Age	Position
Robert Piconi	52	Chief Executive Officer and Director
~~David Hitchcock~~Jan Kees van Gaalen	6166	Chief Financial Officer
Andrea Pedretti	4849	Chief Technology Officer
Josh McMorrow	49	Chief Legal Officer
Christopher K. Wiese	6263	Chief Operating Officer
Marco Terruzzin	4950	Chief Product Officer
Goncagul İçören	47	Chief People Officer
John Jung	55	President of Energy Vault Solutions
Laurence Alexander	5758	Chief Marketing Officer
~~Akshay Ladwa~~	39	~~Chief Engineering Officer~~

~~David Hitchcock~~Jan Kees van Gaalen has served as Energy Vault’s ~~Interim~~ Chief Financial Officer since ~~April~~ 2022. ~~He has~~Mr. van Gaalen served as ~~an industry advisor~~interim Chief Financial Officer at OneSpan (Nasdaq:OSPN), a publicly held digital agreements security software company from October 2021 until September 2022. Previously, from September 2018 to ~~Astra Capital Management since July~~December 2019, and has been a board members and chair of the audit committee for Communications Technologies Services, LLC, an Astra portfolio company, since May 2021. From June 2007 until April 2015, Mr. Hitchcockhe served as ~~the EVP and~~ Chief Financial Officer of ~~Syniverse Technologies LLC,~~C&J Energy Services, a ~~company providing services~~large provider of oilfield services. Prior to ~~the mobile telecom industry, and~~C&J Energy Services, from ~~April~~September 2015 ~~until his retirement in July 2016, served as its EVP, Global Product Management & Development. From December 2006~~ to ~~May 2007, he served as the~~September 2018, Mr. van Gaalen was Chief Financial Officer ~~North America, at Alcatel-Lucent S.A.,~~of Kennametal, a leading global ~~telecommunications equipment company. From May 2001 until November 2006,~~provider of metalworking products and tools. Mr. ~~Hitchcock held numerous roles at Lucent Technologies Bell Labs, including as SVP & Corporate Controller~~van Gaalen graduated with a B.A. in Economics from ~~March 2006 to November 2006. Mr. Hitchcock is a Certified Public Accountant~~Erasmus University Rotterdam and ~~holds a B.S.~~received his MBA in ~~Accounting and an M.B.A.~~Finance from ~~Wake Forest University.~~the HEC School of Management in Paris.

Andrea Pedretti is Energy Vault Inc.’s co-founder and has served as Energy Vault’s Chief Technology Officer since 2022. Since 2016, Mr. Pedretti has also served as Managing Director for pquadrum engineering SA. Prior to Energy Vault, Mr. Pedretti served as a scientific advisor to Synhelion SA from 2016 to 2019. Prior to joining Synhelion SA, Mr. Pedretti was co-founder of Airlight Energy and its Chief Technology Officer from 2007 to 2016. Airlight Energy Manufacturing SA (“Airlight”) declared bankruptcy in August 2016, while Mr. Pedretti was its Chief Technology Officer. Mr. Pedretti was investigated in connection with the Airlight bankruptcy and was later indicted in Switzerland for having received undue and preferential payments in the amount of 200,000 Swiss Francs from Airlight to the detriment of other company creditors in violation of paragraphs 158 and 164 of the Swiss Criminal Code. On April 7, 2023 Mr. Pedretti was convicted on these charges and was sentenced to 13 months of conditional suspension for two years. Mr. Pedretti has appealed this sentence. Prior to co-founding Airlight Energy, Mr. Pedretti was company director and Chief Technology Officer at Airlight Ltd. Mr. Pedretti holds a M.S. in Civil Engineering from the Swiss Federal Institute of Technology (ETH).

Josh McMorrow has served as Energy Vault’s Chief Legal Officer since 2022. Mr. McMorrow is responsible for overseeing Energy Vault’s legal, regulatory, IP and compliance functions, as well as all legal aspects of its strategic and commercial partnerships as the company continues to scale its operations and expand its global footprint. Mr. McMorrow joined the Energy Vault leadership team as a Senior Legal Executive with broad international experience in the energy, industrial gas, construction, and chemicals industries. Mr. McMorrow has been recognized as one of the top 100 GCs in three countries (United States, Switzerland, and Germany) as well as being named General Counsel of the Year for Energy. Mr. McMorrow serves on the Supervisory Board, and as a member of the Audit Committee of Philomaxcap AG. Before joining Energy Vault, he served as Vice President, Secretary and Group General Counsel for Atotech Group from 2019 to 2022, and he also served in a number of roles for Weatherford International from 2014 to 2019 including VP, Chief Commercial Counsel and General Counsel -— North America. Mr. McMorrow also spent 8 years with Air Liquide, ultimately as General Counsel of Air Liquide Engineering & Construction for the Americas. Josh McMorrow graduated with Honors from the University of Texas School of Law and completed his undergraduate degree in International Business at Trinity University, graduating cum laude.

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Christopher K. Wiese has served as Energy Vault’s Chief Operating Officer since 2022. Mr. Wiese also served as Energy Vault Inc.’s Vice President of Engineering from February 2021 to September 2021. Prior to Energy Vault, Mr. Wiese served as Vice President of Global Procurement for Zebra Technologies Corporation (Nasdaq:ZBRA) from 2015 to 2019. Prior to joining Zebra Technologies Corporation Mr. Wiese served as the Senior Vice President of Engineering at Danaher from 2013 to 2014, and the Chief Operating Officer for Spirent Communications plc from 2007 to 2013. Mr. Wiese began his career at Bell Labs in 1988 and progressed through increasing roles of responsibility within the R&D, Engineering and Supply Chain organizations. Mr. Wiese holds a B.S. and a M.S. in Mechanical Engineering from the University of Wisconsin.

Marco Terruzzin has served as Energy Vault’s Chief Product Officer since 2022. Prior to Energy Vault, Dr. Terruzzin was founder of EVfy, Inc. Prior to founding EVfy, Inc., Dr. Terruzzin served as Director of Energy Storage for RWE Renewables GmbH from 2017 to 2019. Prior to joining RWE Renewables GmbH, Dr. Terruzzin served as Head of Energy Storage Edge Platform for Stem, Inc. from 2016 to 2017. Prior to joining Stem, Inc., Dr. Terruzzin served as Managing Director —- Americas for Electro Power Systems S.A. from 2015 to 2016. Dr. Terruzzin holds a M.Sc. in Mechanical Engineering and a Ph.D. in Energy Economics from University of Padua (Italy) and an M.B.A. from the University of Virginia Darden School of Business.

Goncagul İçören has served as Energy Vault’s Chief People Officer since 2022. Prior to Energy Vault, Ms. Icoren served as an Executive Director of HR at Amgen Inc. (Nasdaq:AMGN) from 2017 to 2021 and a Regional HR Lead from 2014 to 2017. Prior to joining Amgen Inc., Ms. Icoren served as Vice President of Global Talent Management at Actavis Pharma, Inc. from 2012 to 2014 and Vice President of Human Resources for Europe from 2009 to 2012. Ms. Icoren holds a B.A. in International Relations from Middle East Technical University and an Executive M.Sc. in International Human Resource Management from Cranfield University Cranfield School of Management.

John Jung has served as Energy Vault’s President of Energy Vault Solutions since 2022. Prior to Energy Vault, Mr. Jung served as Operating Partner for Cota Capital Management, LLC from January 2020 to October 2021. Prior to joining Cota Capital Management, LLC, Mr. Jung co-founded BrightNight, LLC and served as its President from May 2019 to October 2019. Prior to BrightNight, LLC, Mr. Jung served as Global Vice President, Energy Storage/Software/Solar for ~~Warstila~~Wärtsilä Corporation from July 2017 to December 2018. Prior to Wartsila Corporation, Mr. Jung founded Greensmith Energy Management Systems Inc. and served as its President and Chief Executive Officer from its inception in April 2009 until it was acquired by Wartsila Corporation in June 2017. Mr. Jung holds a B.A. in Pure Science and Economics from the University of Western Ontario and a M.B.A. in Strategy and Finance from Ivey Business School.

Laurence Alexander has served as Energy Vault’s Chief Marketing Officer since 2022. Mr. Alexander has also served as Chairman for Wantley Manor Consultancy Ltd. since 2002 and a board advisor for Chronos Imaging LLC since 2018. Prior to Energy Vault, Mr. Alexander co-founded EarlyWMC Limited and served as its Chairman from 2010 to 2019. Mr. Alexander also served as Vice President Marketing for Danaher Corporation from 2010 to 2015. Prior to Danaher Corporation, Mr. Alexander served as Group Chief Executive Officer for SAB Holdings, LLC from 2009 to 2010. Prior to SAB Holdings, LLC, Mr. Alexander served in roles of increasing responsibility for O2, a brand owned by Telefónica, from 2002 to 2005. Prior to O2, Mr. Alexander served as Chief Executive Officer for Genie, a subsidiary of British Telecom, from 1999 to 2002. Prior to Genie, Mr. Alexander served as Managing Director of Consumer Services and Chief Operating Officer for World Online from 1998 to 1999. Mr. Alexander holds a HND in Business Studies from Greater Brighton MET.

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EXECUTIVE AND DIRECTOR COMPENSATION

This section discusses the material components of the executive compensation program for our executive officers who are named in the “2022 Summary Compensation Table” below. For the year ended December 31, ~~2021,~~2022, our named executive officers were Robert Piconi, Chief Executive Officer, Marco Terruzzin, Chief Product Officer and ~~Andrea Pedretti,~~Josh McMorrow, Chief ~~Technology~~Legal Officer.

This section provides an overview of our executive compensation programs, including a narrative description of the material factors necessary to understand the information disclosed in the summary compensation table below. As we transition from a private company to a publicly traded company, the combined company will continue to evaluate its compensation program as circumstances require. This discussion may contain forward-looking statements that are based on our current plans, considerations, expectations and determinations regarding future compensation programs. ~~The~~Furthermore, the compensation reported in this discussion is not necessarily indicative of how the named executive officers will be compensated in the future. The number of shares subject to equity awards shown in this section have been adjusted to reflect the business combination between us Novus Capital Corporation II and Energy Vault, Inc. (the “Business Combination”).

~~2020 and 2021~~2022 Summary Compensation Table

The following table shows information regarding the compensation of our named executive officers for ~~services performed during~~ the years ended December 31, ~~2020~~2022 and December 31, 2021.

	Year		Salary ($)(1)		Bonus ($)(2)		Stock Awards ($)(3)		All Other Compensation ($)(4)		Total ($)
Robert Piconi, Chief Executive Officer		2020		340,312		43,600		—		—		383,912
		2021		514,824		430,550		3,586,359		105,651		4,637,384
Andrea Pedretti, Chief Technology Officer		2020		272,231		15,000		—		—		287,231
		2021		285,000		125,000		1,712,537		19,064		2,141,601
Marco Terruzzin, Chief Product Officer		2020		234,484		188,500(5)		—		—		422,984
		2021		300,000		180,000		595,825		—		1,075,825
Name and Principal Position													Year		Salary ($)(1)		Bonus ($)		Stock Awards ($)(2)		Non-Equity Incentive Plan Compensation ($)(3)		All Other Compensation ($)		Total ($)(7)
Robert Piconi Chief Executive Officer														2022		710,425		—		20,092,548		1,019,859		128,943(4)		21,951,775
Robert Piconi Chief Executive Officer														2021		514,824		430,550		3,586,359		—		105,651		4,637,384
Marco Terruzzin Chief Product Officer														2022		318,751		—		7,839,750		222,760		—		8,381,261
Marco Terruzzin Chief Product Officer														2021		300,000		180,000		595,825		—		—		1,075,825
Josh McMorrow (5) Chief Legal Officer														2022		197,242		—		7,170,688		111,841		6,820(6)		7,486,591
Josh McMorrow (5) Chief Legal Officer														—		—		—		—		—		—		—

(1)

The amounts in this column represent the total base salaries earned in ~~2020 and 2021~~2022 from ~~Energy Vault~~the Company and Energy Vault SA (as applicable). ~~For base salaries and bonuses earned from Energy Vault SA, we have converted CHF to USD, with an exchange rate of 1.09 USD to 1.00 CHF, as of December 31, 2021.~~

~~In the case of Mr. Piconi, his base salary for 2021 includes a vacation payout under Swiss law in the amount of CHF 22,270 (USD 24,274).~~

~~Additionally, all our employees, including the named executive officers, were subject to a temporary salary reduction due to the COVID-19 pandemic for the months of April 2020 to November 2020.~~

(2)

These amounts represent the full grant date fair value for awards granted in 2022 and 2021. The grant date fair value was computed in accordance with ASC Topic 718 (excluding the effect of estimated forfeitures) rather than the amounts paid to or realized by the named executive officer. As discussed below, Mr. Piconi received two equity awards in November 2022 (the “November Grant”) and December 2022 (the “December Grant”) that were subject, in part, to market conditions (the “Market-Based Portion”). In accordance with the SEC rules, the amount reported herein for the Market-Based Portion ($10,282,916) is based upon the probable outcome of such conditions as of the grant date in accordance with ASC Topic 718 using the Monte Carlo method. For the November Grant, the following inputs were used: stock price: $3.10; stock price volatility: 0.90; risk free interest rate: 3.82%. For the December Grant, the following inputs were used: stock price: $2.93; stock price volatility: 0.90; risk free interest rate: 3.58%. The maximum value of the Market-Based Portion of Mr. Piconi’s awards as of the grant date (assuming the full satisfaction of the market conditions) would have been $13,839,632. The assumptions we used in valuing stock awards are described in Note 15 to our audited financial statements included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2022.

(3)

Represents ~~2020 and 2021 discretionary~~2022 annual cash bonuses granted to each named executive officer based on a ~~subjective~~ review of the yearly performance of the named executive officer and the ~~Company and progress toward the final achievement of the shareholder approval required for the Business Combination which closed on February 11, 2022.~~Company. These bonuses were paid in early ~~2022. Bonuses were paid in USD, except in the case of Mr. Piconi, whose 2020 bonus was paid as CHF 40,000 (USD 43,600) and whose 2021 bonus was paid as CHF 395,000 (USD 430,550).~~2023.

~~(3)~~(4)

~~The amounts in this column represent the aggregate grant date fair value~~This amount represents (i) a health allowance of ~~stock awards granted to the officer in the applicable year computed in accordance with FASB ASC Topic 718. See Note 9~~$63,988, (ii) a car allowance of ~~the Notes to our unaudited consolidated financial statements filed on Form S-1 filed with the SEC on January 13, 2021 for a discussion~~$63,176 and (iii) local transportation of ~~the assumptions we made in determining the grant date fair value of our equity awards.~~$1,778.

2021

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~~(4)~~(5)

~~In the case~~Mr. McMorrow commenced employment with us on May 16, 2022. His salary and non-equity incentive plan compensation were prorated based on his partial year of ~~Mr. Piconi, all other compensation includes expenses~~employment with us.

(6)

This amount represents a car allowance.

(7)

Amounts shown in this table are expressed in U.S. dollars. Amounts for 2021 paid ~~directly by us or Energy Vault SA (as applicable), which was determined to be treated as income~~in CHF to Mr. Piconi ~~including foreign tax preparation, family travel~~have been converted to U.S. dollars based on an exchange rate of 1.09252 as of December 31, 2021. Amounts for ~~Swiss work permit renewal purposes, relocation storage costs and legal expenses~~2022 paid in CHF to Mr. Piconi have been converted to U.S. dollars based on an exchange rate of 1.08271 as of December 31, 2022. Amounts for ~~Swiss residency purposes in the amount of CHF 96,927 (USD 105,651). For Mr. Pedretti, all other compensation includes a relocation reimbursement in the amount of $19,064.~~

~~(5)~~

~~Represents a one-time cash bonus of $100,000~~2022 paid to Mr. ~~Terruzzin~~McMorrow in ~~2020 in connection with him remaining employed with us for a period~~EUR have been converted to U.S. dollars based on an exchange rate of ~~one year. As described below, Mr. Terruzzin’s offer letter originally provided for a one-time cash bonus~~1.06749 as of $200,000, however, we agreed with Mr. Terruzzin to reduce his sign-on bonus from $200,000 to $100,000. In consideration of this reduction, the restricted stock award granted to him in July 2021 (which is reported under the column entitled “Stock Awards”) included fully vested shares of Energy Vault Common Stock.December 31, 2022.

~~In addition, Mr. Terruzzin earned a discretionary bonus of $88,500 in 2020, which was paid in 2021.~~

Narrative Disclosure to ~~2021~~2022 Summary Compensation Table

The compensation of our named executive officers generally consists of base salary, annual incentive compensation and equity compensation. In making executive compensation decisions for our named executive officers, the Board, with input from the Chief Executive Officer (other than with respect to his own arrangements) considers such factors as it deems appropriate in its exercise of discretion and business judgment, including a subjective assessment of the named executive officer’s performance, the amount of vested and unvested equity held by the officer, amounts paid to our other executive officers and competitive market conditions.

Base Salary

Base salary is set at a level that is commensurate with the named executive officer’s duties and authorities, contributions, prior experience and sustained performance.

~~Cash Bonus~~

Cash bonus opportunities are also set at a level that is commensurate with the named executive officer’s duties and authorities, contributions, prior experience and sustained performance, and the initial target amount of all annual bonus opportunities are set forth in the named executive officer’s employment agreement or offer letter, as described below.

Our named executive officers’ ~~target~~base salaries are typically reviewed annually, and adjustments may be made when the Board or our compensation committee deems appropriate.

The following table shows the annual cash ~~bonuses for 2021, expressed as a percentage~~base salaries of base salary, were 50% for Mr. Piconi and 40% for Messrs. Pedretti and Terruzzin. After the year is completed, our Board reviews our performance and each individual executive’s performance to determine the individual bonus amounts. The actual amounts paid to our named executive officers under the Company’s 2021 annual cash bonus program are set forth in the Summary Compensation Table above.

~~Equity Compensation~~

Historically, the equity compensation granted to our named executive officers has consisted of restricted stock units (“RSUs”) and restricted stock awards. Awards held by the named executive officers were granted under our 2020 Stock Plan (the “2020 Plan”). Following the closing of the Business Combination, no further awards will be made under the 2020 Plan; however, awards outstanding under the 2020 Plan continued to be governed by their existing terms (provided that such awards were subject to adjustment in connection with the Business Combination). For a description of the stock awards granted to our named executive officers that were outstanding as of December 31, 2021, please see the “Outstanding Equity Award at 2021 Year-End” table below.

In 2022, in connection with the Business Combination, we adopted, and our stockholders approved, the Energy Vault Holdings, Inc. 2022 Equity Incentive Plan (the “2022 Plan”). Following the closing of the Business Combination, equity awards have been made under the 2022 Plan.

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~~Health and Welfare Benefits and Perquisites~~

Our named executive officers are generally eligible to participate in our health and welfare plans to the same extent as other full-time employees. We generally do not provide our named executive officers with perquisites or other personal benefits. However, we do reimburse our named executive officers for ~~their necessary~~2022 and ~~reasonable business~~2023.

Name	2022 Cash Annual Base Salary ($)		2023 Cash Annual Base Salary ($)
Robert Piconi		690,000(1)		690,000
Marco Terruzzin		375,000(2)		401,250
Josh McMorrow		314,910(3)		349,550(3)

(1)

Increased from $455,000 on November 11, 2022, effective February 14, 2022.

(2)

Increased from $300,000, effective October 1, 2022.

(3)

Mr. McMorrow’s Base Salary is paid in Euros and ~~travel expenses incurred~~has been converted to U.S. dollars based on an exchange rate of 1.06749 as of December 31, 2022. As Mr. McMorrow commenced employment with us on May 16, 2022, his salary shown in ~~connection with their services to us.~~the 2022 Summary Compensation Table above reflects a partial year of employment.

~~Employment Arrangements with Energy Vault’s Named Executive Officers~~2022 Annual Cash Bonuses

We have entered into an employment letter or an employment agreement with each of our named executive officers setting forth the initial terms of such officer’s employment. For each of our named executive officers, employment is “at will” and may be terminated at any time.

Each of our named executive officers is eligible to earn an annual incentive bonus for each year they are employed by us, with the target amount of such bonus opportunity set as a percentage of each named executive officer’s annual base salary. Target cash bonus opportunities are set at a level that is commensurate with the named executive officer’s duties and authorities, contributions, prior experience and sustained performance. The ~~salaries and~~ target bonus opportunities ~~of our named executive officers~~ are typically reviewed annually and are adjusted when ~~our~~the Board or our compensation committee determines it is appropriate. ~~Historically,~~

For 2022, our named executive officers’ target annual cash bonuses, expressed as a percentage of base salary paid in 2022, were 100% for Mr. Piconi, 50% for Mr. Terruzzin and 50% for Mr. McMorrow.

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Based upon recommendations from our compensation committee, our Board generally determines annual bonuses for our named executive officers’ by multiplying (a) base salary, by (b) target cash bonus percentage, by (c) the level of achievement of corporate, and then adjusts the resulting amount to reflect individual performance during the year. In addition, the Board retains discretion to adjust annual bonuses further as it determines to be appropriate to reflect other factors that the Board believes to be appropriate.

The table below provides additional details about the Board’s assessment of our actual performance against our 2022 corporate objectives:

2022 Corporate Objective	Weighting		Assessed Performance
Contract Bookings		50%		50%
Total Revenue		30%		30%
Cash and Cash Equivalents		20%		28%
Total		100%		108%

In assessing individual performance during the year, the Board and the compensation committee take into account Mr. Piconi’s assessment of the named executive officers other than himself. The assessment of Mr. Piconi’s performance objectives are determined by the Board based upon the recommendation of the compensation committee.

In February 2023, in consultation with management and upon the recommendation of the compensation committee, the Board determined that the corporate objectives were achieved at 108% of target. After assessing individual performance, the Board determined to award cash bonuses as follows: Mr. Piconi received 132% of target, Mr. Terruzzin received 130% of target and Mr. McMorrow received 105% of target, prorated for his partial year of employment with us. The actual amounts paid to our named executive officers under the Company’s 2022 annual cash bonus program are set forth in the 2022 Summary Compensation Table above under the heading “Non-Equity Incentive Plan Compensation.”

Equity Compensation

In 2022, the equity compensation granted to our named executive officers ~~has~~ consisted of restricted stock units (“RSUs”) pursuant to an equity incentive plan that we maintain. The RSUs granted in 2022 are subject to service and/or market-based vesting conditions. We typically grant RSUs to our named executive officers on an annual basis as the long-term incentive component of our compensation program, and we have retained discretion to provide additional targeted equity grants in appropriate circumstances, such as in connection with an employee taking on a new role at the Company or to retain or reward a specific employee.

In 2022, we granted two awards of RSUs to Mr. Piconi. One of Mr. Piconi’s RSU awards was granted in November 2022 and covers 6,500,000 shares and vests as follows: (i) as to 2,600,000 shares, over four years, with 25% vesting on February 28, 2023, and the remainder vesting in 12 equal quarterly installments thereafter, (ii) as to 1,300,000 shares, if the fair market value per share of common stock equals or exceeds $15.00 for twenty trading days during any consecutive thirty trading day period occurring after the grant date and prior to February 11, 2029, (iii) as to 1,300,000 shares, if the fair market value per share of common stock equals or exceeds $17.50 for twenty trading days during any consecutive thirty trading day period occurring after the grant date and prior to February 11, 2029, and (iv) as to 1,300,000 shares, if the fair market value per share of common stock equals or exceeds $20.00 for twenty trading days during any consecutive thirty trading day period occurring after the grant date and prior to February 11, 2029. The second RSU award was granted to Mr. Piconi in December 2022 and covers 1,194,288 shares and vests as follows: (i) as to 597,144 shares, in twelve equal quarterly installments, (ii) as to 199,048 shares, if the fair market value per share of common stock equals or exceeds $11.00 for twenty trading days during any consecutive thirty trading day period occurring after the grant date and prior to December 16, 2026, (iii) as to 199,048 shares, if the fair market value per share of common stock equals or exceeds $13.00 for twenty trading days during any consecutive thirty trading day period occurring after the grant date and prior to December 16, 2026, and (iv) as to 199,048 shares, if the fair market value per share of common stock equals or exceeds $15.00 for

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twenty trading days during any consecutive thirty trading day period occurring after the grant date and prior to December 16, 2026. These award of RSUs are generally subject to continued service on the vesting date.

In 2022, Mr. Terruzzin received two awards of RSUs. ~~For a description~~In July 2022, Mr. Terruzzin received 850,000 RSUs, which vest (i) as to 25% of ~~such equity~~the award, on February 27, 2023, and (ii) as to the remainder, in 12 equal quarterly installments thereafter, subject generally to continued service. In December 2022, Mr. Terruzzin received 200,000 RSUs, which vest (i) as to 33.2% of the award, on October 31, 2023 and (ii) as to the remainder, in eight equal quarterly installments thereafter, subject generally to continued service.

In 2022, Mr. McMorrow received three awards ~~outstanding~~of RSUs. Mr. McMorrow received 270,940 RSUs in May 2022 and 400,000 RSUs in July 2022, which each vest (i) as to 25% of the award on May 31, 2023, and (ii) as to the remainder, in 12 equal quarterly installments thereafter, subject generally to continued service. In December 2022, Mr. McMorrow received 75,000 RSUs, which vest (i) as to 33.2% of the award, on October 31, ~~2021, please see~~2023 and (ii) as to the ~~“Outstanding~~remainder, in eight equal quarterly installments thereafter, subject generally to continued service.

Please refer to our Outstanding Equity Awards at ~~2021 Year-End”~~2022 Fiscal Year End table ~~below.~~below for additional information regarding equity awards held by our named executive officers.

Health and Welfare Benefits and Perquisites

Our named executive officers are generally eligible to participate in our health and welfare plans to the same extent as other full-time employees. We reimburse our named executive officers for their necessary and reasonable business and travel expenses incurred in connection with their services to us. Additionally, Messrs. Piconi and McMorrow are entitled to certain additional expenses and reimbursements, as described below in the section entitled “Employment Arrangements with Energy Vault’s Named Executive Officers — Agreements with Robert Piconi and — Agreements with Josh McMorrow.” Otherwise, we generally do not provide our named executive officers with perquisites or other personal benefits.

Employment Arrangements with Energy Vault’s Named Executive Officers

We have entered into an employment agreement with each of our named executive officers setting forth the initial terms of such officer’s employment. For each of our named executive officers, employment is “at will” and may be terminated at any time.

Agreements with Robert Piconi

Mr. Piconi ~~initially~~ entered into ana new employment agreement with the Company and Energy Vault SA on ~~January 1, 2018, an amended employment agreement~~November 11, 2022, which superseded prior agreements he had entered into with ~~Energy Vault SA on December 1, 2020,~~the Company and ~~an employment letter, dated~~pursuant to which Mr. Piconi agreed to continue to serve as ~~of September 16, 2019, with Energy Vault, Inc. (together,~~ the Company’s President and Chief Executive Officer (the “Piconi ~~Agreements”~~Agreement”).

Pursuant to the Piconi ~~Agreements,~~Agreement, Mr. Piconi serves as our Chief Executive Officer and became entitled to receive a base salary at an annual rate of CHF 395,000 (USD 399,412 based on an exchange ratio of USD 1.01117 to one CHF as of October 28, 2022) for his service to Energy Vault SA and USD 60,000 for his service to Energy Vault, Inc. Beginning in December 2020, Mr. Piconi becameis entitled to receive an annual ~~variable performance~~base salary of $690,000 and is also eligible to receive an annual discretionary bonus ~~of 50%~~award targeted at 100% of his ~~annual salary based on mutually established goals.~~

In addition, per the employment agreement with Energy Vault SA, if Energy Vault SA terminates his employment unilaterally with an ordinary notice of 90 days, Mr. Piconi is eligible for severance benefits equal to twelve months ofthen-current base ~~salary at his then current base salary rate plus his target bonus amount, subject to standard withholding and payroll deductions. Under his employment agreement, during his employment,~~salary. Mr. Piconi is also ~~eligible~~entitled to receive annual equity awards at a target level at least equal to four times the sum of his base salary plus target bonus. Upon a change in control, 100% of all time-based equity awards will become fully vested and 50% of all then unvested performance-based equity awards will become immediately vested.

Mr. Piconi is also entitled to receive (i) a tax gross-up payment for ~~ancillary benefits, such~~any incremental taxes imposed on him as a ~~standard car~~result of expense reimbursements, (ii) reimbursements for reasonable costs incurred in connection with accounting and tax return preparation assistance, (iii) the cost of an annual health examination, (iv) reasonable costs incurred in connection with global physician support services when on Company business travel, (v) monthly membership dues of up to $2,500 per month for on professional or industry social club, (vi) an automobile allowance of up to $1,500 per month and ~~reasonable expenses~~(vii) reimbursement for ~~foreign tax preparation and other ancillary expenses as they relate directly~~legal fees associated with the negotiation of the Piconi Agreement.

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Under the terms of the Piconi Agreement, in the event of a termination by the Company without cause or due to his disability or by Mr. Piconi for good reason, or due to Mr. Piconi’s ~~employment~~death, each within the meaning of and under the Piconi Agreement (each, a “Qualifying Termination”), Mr. Piconi will be entitled to receive (i) an amount in cash equal to one times his base salary and his target bonus, (ii) any earned but unpaid bonus for the year prior to the year of termination, and (iii) up to 12 months of continued medical, dental or vision coverage pursuant to COBRA. Additionally, 50% of any equity-based awards that vest solely based on continued service would become immediately vested and with ~~Energy Vault SA.~~respect to any awards that vest based on the attainment of performance conditions, 50% of such awards would become immediately vested at the target level of performance and 50% of such awards would remain outstanding and eligible to vest based on the attainment of the applicable performance conditions until the earlier of (i) the end of the original performance period and (ii) the second anniversary of the date of termination. Furthermore, Mr. Piconi’s right to exercise any stock options would be extended for two years from the date of termination (subject to earlier termination in a change in control and upon the final expiration date of the option).

If the Qualifying Termination occurs within 90 days prior to, or within 18 months following, a change in control of the company, then, in lieu of the payments and benefits set forth above, Mr. Piconi will be entitled to receive (i) an amount in cash equal to two times his base salary plus 1.5 times his target bonus, (ii) any earned but unpaid bonus for the year prior to the year of termination, and (iii) up to 18 months of continued medical, dental or vision coverage pursuant to COBRA. Additionally, any unvested equity-based awards will become vested (with any performance-based conditions measured at target level of performance). Furthermore, Mr. Piconi’s right to exercise any stock options would be extended for two years from the date of termination (subject to earlier termination in a change in control and upon the final expiration date of the option).

Pursuant to the terms of the Piconi Agreements, Mr. Piconi is subject to (i) customary invention assignment and confidentiality restrictions and (ii) non-compete and non-solicit covenants for 12 months post-termination of employment.

On November 27, 2017, Energy Vault granted Mr. Piconi 8,615,892 shares of our common stock pursuant to a restricted stock purchase agreement. The terms of the restricted stock purchase agreement provide that the restricted stock shall vest or has vested (and therefore shall be released or has been released from our repurchase option) as follows: 25% of the shares vested on November 27, 2018, and 1/48th of the shares of restricted stock shall vest (or has become vested) on each month thereafter, subject to Mr. Piconi’s continued employment with us through the relevant vesting dates. In addition, 100% of any unvested shares of restricted stock shall accelerate and become immediately vested if Mr. Piconi’s employment is terminated either by us without “Cause” or by Mr. Piconi for “Good Reason,” in either case, during the six month period following a “Change of Control” (as such terms are defined in the restricted stock purchase agreement).

In July 2021, we granted Mr. Piconi 4,909,995 shares of our common stock pursuant to a restricted stock award agreement which was subsequently amended in April 2022 to align with the terms that we and Mr. Piconi had agreed to in the period leading up to the award on July 8, 2021. As amended, this restricted stock agreement has a vesting commencement date of July 8, 2021 which was previously stated as July 19,

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2019. Shares subject to this restricted stock award, as amended, vest according to the satisfaction of two vesting requirements: (i) a time-based service requirement, which would be partially satisfied with respect to 25% of the shares if Mr. Piconi remains in continuous service through the twelve month anniversary of the vesting commencement date, in this case July 8, 2022, and the remaining shares would become satisfied in 1/48th equal monthly installments if Mr. Piconi remains in continuous service with us through each monthly anniversary thereafter, starting on August 8, 2022 and ending on July 8, 2025, and (ii) a liquidity event vesting requirement, which would be satisfied on the earlier to occur of either a Qualified Transaction (which, as defined, included the completion of the Business Combination) or a “Sale Event” that earns the multiples of money and internal rates of return, as described in the restricted stock award agreement. In addition, as amended, if the liquidity event requirement is satisfied before Mr. Piconi’s service with the company terminates, then the time-based service requirement will be deemed satisfied with respect to 100% of the total number of shares subject to the award, which was stated as 50% in the original restricted stock award. As this liquidity event requirement was satisfied in connection with the completion of the Business Combination, Mr. Piconi’s restricted stock award became fully vested upon the closing of the Business Combination and would have also become fully vested upon such occurrence under the prior terms.

~~Agreements with Andrea Pedretti~~

Mr. Pedretti initially entered into an employment agreement with Energy Vault SA on August 1, 2019 and an employment letter, dated as of October 12, 2020, with Energy Vault, Inc. (together, the “Pedretti Agreements”). Pursuant to the Pedretti Agreements, Mr. Pedretti serves as our Chief Technology Officer and initially became entitled to receive a base salary at an annual rate of CHF 350,000 (USD 353,909 based on an exchange ratio of USD 1.01117 to one CHF as of October 28, 2022) for full-time service. In September 2020, Mr. Pedretti’s position was reduced to 80% working time.

Beginning in October 2020, Mr. Pedretti relocated to the U.S. and commenced receiving a base salary at an annual rate of $285,000 for 80% working time and became entitled to receive an annual variable performance bonus of up to 40% of his annual salary based on mutually established goals.

In addition, Mr. Pedretti is subject to (i) customary invention assignment and confidentiality provisions and (ii) non-compete and non-solicit covenants for 12 months post-termination of employment.

On November 28, 2017, we granted Mr. Pedretti 2,871,964 shares of common stock pursuant to a restricted stock purchase agreement. The terms of the restricted stock purchase agreement provide that the restricted stock shall vest (and therefore be released from our repurchase option) as follows: 80% of the shares are subject to our right of repurchase, and 25% of the shares subject to repurchase will vest on the one year anniversary of the effective date of November 28, 2017, and thereafter, 1/48th of the restricted stock shall vest each month so that the restricted stock is fully vested on the fourth anniversary of the effective date, subject to Mr. Pedretti’s continued employment with Energy Vault on the relevant vesting dates.

In July 2021, we granted Mr. Pedretti 2,343,407 shares of our Common Stock pursuant to a restricted stock unit (“RSU”) agreement, which was subsequently amended in April 2022 to align with the terms that we and Mr. Pedretti had agreed to in the period leading up to the award on July 8, 2021. As amended, this RSU agreement has a vesting commencement date of July 8, 2021, which was previously stated as July 19, 2019. Shares subject to this RSU award vest according to the satisfaction of two vesting requirements: (i) a time-based service requirement, which would be partially satisfied with respect to 25% of the shares if Mr. Pedretti remains in continuous service through the twelve month anniversary of the vesting commencement date, in this case July 8, 2022, and the remaining shares shall become satisfied in 1/48th equal monthly installments if Mr. Pedretti remains in continuous service with us through each monthly anniversary thereafter, starting on August 8, 2022 and ending on July 8, 2025, and (ii) a liquidity event vesting requirement, which would be satisfied on the earlier to occur of either a Qualified Transaction (which, as defined, included the completion of the Business Combination) or a Sale Event that earns the multiples of money and internal rates of return, as described in the RSU award agreement. In addition, if the liquidity event requirement is satisfied before Mr. Pedretti’s service with us terminates, then the time-based service requirement will be deemed satisfied with respect to 50% of the total number of shares subject to the award.

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Agreements with Marco Terruzzin

On November 10, 2022, the Company and Marco Terruzzin, the Company’s Chief Commercial and Product Officer, entered into a new employment agreement (the “Terruzzin Agreement”), pursuant to which Mr. Terruzzin ~~entered into an~~will continue to serve as the Company’s Chief Commercial and Product Officer. The Terruzzin Agreement supersedes the terms of his prior employment agreement with ~~us dated as~~the Company.

The Terruzzin Agreement provides for at-will employment. Mr. Terruzzin’s annual base salary will be $375,000. Mr. Terruzzin will also be eligible to receive an annual cash bonus targeted at 50% of ~~September 17, 2019 (the “Terruzzin Agreement”). Pursuant to~~his annual base salary.

Under the terms of the Terruzzin Agreement, in the event of a termination by the Company without cause or by Mr. Terruzzin ~~serves as our Chief Product Officer~~for good reason, each within the meaning of and isunder the employment agreement, Mr. Terruzzin will be entitled to receive a(i) an amount in cash equal to one times his base salary ~~at an~~(or, if the termination occurs within 18 months following a change in control, 1.5 times the sum of his base salary and target annual ~~rate~~bonus), (ii) a pro-rated target bonus for the year of ~~USD 300,000~~termination, (iii) accelerated vesting of all unvested equity awards if such termination occurs within 18 months following a change in ~~addition~~control, and (iv) up to ~~a one-time retention bonus of USD 200,000, subject to Mr. Terruzzin completing twelve~~18 months of ~~continuous service with us. Subsequently, Mr. Terruzzin and us agreed~~continued medical, dental or vision coverage pursuant to reduce his retention bonus from USD 200,000 to USD 100,000. Mr. Terruzzin is also eligible for an annual variable target bonus of up to 40% of his annual salary based on mutually established goals. Per the Terruzzin Agreement, Mr. Terruzzin is eligible to receive sales commission based on the terms of our sales compensation plan and an applicable sales compensation agreement between Mr. Terruzzin and us.COBRA.

Pursuant to the terms of the Terruzzin Agreement, Mr. Terruzzin agreed to our standard Employee Confidentiality and Non-Disclosure Agreement, which includes (i) customary invention assignment and confidentiality provisions and (ii) ~~non-compete and~~a non-solicit ~~covenants~~covenant for 12 months post-termination of employment.

~~In July 2021, we granted Mr. Terruzzin 745,085 shares of Energy Vault Common Stock, 135,470 of which was granted as fully vested shares~~Agreements with Josh McMorrow

On May 16, 2022, EnergyVault SA and Josh McMorrow, the ~~remaining 609,615 shares are to vest~~Company’s Chief Legal Officer, entered into an employment agreement (the “McMorrow Agreement”), pursuant to ~~a restricted stock agreement with a vesting commencement date~~which Mr. McMorrow receives an annual base salary of ~~July 23, 2020. The fully vested shares were granted in consideration for~~€295,000 and is eligible to receive an annual cash bonus targeted at 50% of his annual base salary. Additionally, Mr. ~~Terruzzin’s agreement~~McMorrow is entitled to ~~reduce his retention bonus, as described above. In May 2022, such restricted stock agreement was amended to align with the terms that we and Mr. Terruzzin had agreed to in the period leading~~receive an automobile allowance of up to the award on July 8, 2021. As amended, this restricted stock agreement (1) provides that 304,807 of the shares subject to the restricted stock award have a vesting commencement date of October 4, 2019 and (2) provides that 304,808 of the shares subject to the restricted stock award have a vesting commencement date of July 23, 2020. As amended, shares subject to this restricted stock award vest according to the satisfaction of two vesting requirements: (i) a time-based service requirement, which was or would be partially satisfied with respect to 25% of the shares if Mr. Terruzzin remains or remained in continuous service through the twelve month anniversary of the applicable vesting commencement date, and the remaining shares became or shall become satisfied in 1/48th equal monthly installments if Mr. Terruzzin remains in continuous service with us through each monthly anniversary thereafter, ending on October 4, 2023 or July 23, 2024, as applicable, and (ii) a liquidity event vesting requirement, which shall be satisfied on the earlier to occur of either a Qualified Transaction (which, as defined, included the completion of the Business Combination) or a Sale Event that earns the multiples of money and internal rates of return, as described on the restricted stock award agreement. In addition, if the liquidity event requirement is satisfied before Mr. Terruzzin’s service with us terminates, then the time-based service requirement will be deemed satisfied with respect to 50% of the total number of shares subject to the award. As this liquidity event requirement was satisfied in connection with the completion of the Business Combination, Mr. Terrunzzin’s restricted stock award will become fully vested on July 23, 2022.

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~~Outstanding Equity Awards at 2021 Year-End~~

The following table provides information regarding outstanding unvested equity awards held by our named executive officers as of December 31, 2021. The number of shares subject to each equity award set forth below are as of December 31, 2021 but have been adjusted to reflect the Business Combination:

Name
Type of
Award

Number
of shares
or units
of stock
that have
not
vested
(#)

Market
value of
shares or
units of
stock that
have not
vested
($)(4)

Purchase
Price
($)

Robert Piconi(1)
Restricted Stock 4,909,995 48,610,654 0.0025
Andrea Pedretti(2)
RSU 2,343,407 23,200,547 —
Marco Terruzzin(3)
Restricted Stock 609,615 6,035,400 0.0025

~~(1)~~

Mr. Piconi was granted a restricted stock award of 4,909,995 shares of our common stock on July 8, 2021 pursuant to a restricted stock agreement, which was subsequently amended in May 2022 to align with the terms that we and Mr. Piconi had agreed to in the period leading up to the award on July 8, 2021. As amended, this restricted stock agreement had a vesting commencement date of July 8, 2021, which was previously stated as July 19, 2019, and standard “cliff vesting” terms of 12 months and 25% initial vesting beginning at the 12 month anniversary after the award date. Shares subject to this restricted stock award vest according to the satisfaction of two vesting requirements: (i) a time-based service requirement, which would be partially satisfied with respect to 25% of the shares if Mr. Piconi remains in continuous service with us through the twelve month anniversary of the vesting commencement date, in this case July 8, 2022, and the remaining shares shall become satisfied in 1/48th equal monthly installments if Mr. Piconi remains in continuous service with us through each monthly anniversary thereafter, starting on August 8, 2022 and ending on July 8, 2025, and (ii) a liquidity event vesting requirement, which shall be satisfied on the earlier to occur of either a Qualified Transaction (which, as defined, included the completion of the Business Combination) or a Sale Event that earns the multiples of money and internal rates of return, as described in the restricted stock award agreement. In addition, if the liquidity event requirement is satisfied before Mr. Piconi’s service with the company terminates, then the time-based service requirement will be deemed satisfied with respect to 100% of the total number of shares subject to the award, which was stated as 50% in the original restricted stock award. As this liquidity event requirement was satisfied in connection with the completion of the Business Combination, Mr. Piconi’s restricted stock award became fully vested upon the closing of the Business Combination and would have also become fully vested upon such occurrence under the prior terms.

~~(2)~~

In July 2021, we granted Mr. Pedretti 2,343,407 shares of Energy Vault Common Stock pursuant to an RSU agreement, which was subsequently amended in May 2022 to align with the terms that we and Mr. Pedretti had agreed to in the period leading up to the award on July 8, 2021. As amended, this RSU agreement has a vesting commencement date of July 8, 2021, which was previously stated as July 19, 2019. Shares subject to this RSU award vest according to the satisfaction of two vesting requirements: (i) a time-based service requirement, which would be partially satisfied with respect to 25% of the shares if Mr. Pedretti remains in continuous service through the twelve month anniversary of the vesting commencement date, in this case July 8, 2022 and the remaining shares shall become satisfied in 1/48th equal monthly installments if Mr. Pedretti remains in continuous service with us through each monthly anniversary thereafter, starting on August 8, 2022 and ending on July 8, 2025, and (ii) a liquidity event vesting requirement, which shall be satisfied on the earlier to occur of either a Qualified Transaction (which, as defined, will include the completion of the Business Combination) or a Sale Event that earns the multiples of money and internal rates of return, as described in the RSU award agreement. In addition, if the liquidity event requirement is satisfied before Mr. Pedretti’s service with us terminates, then the time-based service requirement will be deemed satisfied with respect to 50% of the total number of shares subject to the award.

€850 per month.

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Under the terms of the McMorrow Agreement, in the event of a justified ordinary termination by EnergyVault SA (other than for reasons of conduct or good cause) or a justified extraordinary termination for good cause by Mr. McMorrow, Mr. McMorrow will be entitled to receive an amount in cash equal to 0.75 times his base salary.

In addition, Mr. McMorrow is subject to (i) customary invention assignment and confidentiality provisions and (ii) non-compete and non-solicit covenants for 12 months post-termination of employment. During the period in which McMorrow is prohibited from competing with EnergyVault SA, he is entitled to receive 50% of his then current base annual salary, subject to certain waiver rights by EnergyVault SA and certain income limitations in the event Mr. McMorrow earns additional income during this period.

Outstanding Equity Awards at 2022 Year-End

The following table provides information regarding outstanding equity awards held by our named executive officers as of December 31, 2022.

	Stock Awards
Name	Grant Date	Number of Shares or Units of Stock That Have Not Vested (#)(1)		Market Value of Shares or Units of Stock That Have Not Vested ($)(2)		Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights That Have Not Vested (#)		Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units or Other Rights That Have Not Vested ($)
Robert Piconi	11/10/2022		2,600,000(3)		8,112,000
	12/16/2022		597,144(4)		1,863,089
	11/10/2022						1,300,000(6)		4,056,000
	12/16/2022						199,048(7)		621,030
Marco Terruzzin	7/29/2022		875,000(3)		2,730,000
Marco Terruzzin	12/16/2022		200,000(4)		624,000
Josh McMorrow	5/16/2022		270,940(5)		845,333
	7/3/2022		400,000(5)		1,248,000
	12/16/2022		75,000(4)		234,000

(1)

~~Mr. Terruzzin was~~Represents unvested RSUs granted ~~609,615 shares~~pursuant to the 2022 Plan. Each RSU represents a contingent right to receive one share of ~~our~~the Company’s common stock on July 8, 2021 pursuant to a restricted stock agreement with a vesting commencement date of July 23, 2020. In April 2022, such restricted stock agreement was amended to align with the terms that we and Mr. Terruzzin had agreed to in the period leading up to the award on July 8, 2021. As amended, this restricted stock agreement (1) provides that 304,807 of the shares subject to the restricted stock award have a vesting commencement date of October 4, 2019 and (2) provides that 304,808 of the shares subject to the restricted stock award have a vesting commencement date of July 23, 2020. As amended, shares subject to this restricted stock award vest according to the satisfaction of two vesting requirements: (i) a time-based service requirement, which was or would be partially satisfied with respect to 25% of the shares if Mr. Terruzzin remains or remained in continuous service through the twelve month anniversary of the applicable vesting commencement date, and the remaining shares became or shall become satisfied in 1/48th equal monthly installments if Mr. Terruzzin remains in continuous service with us through each monthly anniversary thereafter, ending on October 4, 2023 or July 23, 2024, as applicable, and (ii) a liquidity event vesting requirement, which shall be satisfied on the earlier to occur of either a Qualified Transaction (which, as defined, included the completion of the Business Combination) or a Sale Event that earns the multiples of money and internal rates of return, as described on the restricted stock award agreement. In addition, if the liquidity event requirement is satisfied before Mr. Terruzzin’s service with us terminates, then the time-based service requirement will be deemed satisfied with respect to 50% of the total number of shares subject to the award. As this liquidity event requirement was satisfied in connection with the completion of the Business Combination, Mr. Terrunzzin’s restricted stock award will become fully vested on July 23, 2022 and would have also become fully vested on such date under the prior terms.upon vesting.

~~(4)~~(2)

~~As there was no public market for our common stock on December 31, 2021, we have assumed for this purpose that the fair~~Market value ~~on such date was $67.06 per share. This assumed fair value represents $9.90 per share, which was~~calculated using the closing price per share of our common stock on December 30, 2022 of $3.12.

(3)

The RSUs vest as to 25% of the award on February 28, 2023, with the remainder vesting in twelve equal quarterly installments thereafter. The award may be subject to accelerated vesting, as described above in the section entitled “Employment Arrangements with Energy Vault’s Named Executive Officers.”

(4)

The RSUs vest as to 33.2% of the award on October 31, ~~2021, multiplied by 6.7735. Based~~2023, with the remainder vesting in eight equal quarterly installments thereafter. The award may be subject to accelerated vesting, as described above in the section entitled “Employment Arrangements with Energy Vault’s Named Executive Officers.”

(5)

The RSUs vest as to 25% of the award on May 31, 2023, with the remainder vesting in twelve equal quarterly installments thereafter.

(6)

These RSUs vest as to 33.33% upon the achievement of the Company’s common stock reaching a market price of $15 per share for 20 out of 30 trading days prior to February 11, 2029 (the “$15 Share Price Target”), 33.33% upon the achievement of the Company’s common stock reaching a market price

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of $17.50 per share for 20 out of 30 trading days prior to February 11, 2029 and 33.33% upon the achievement of the Company’s common stock reaching a market price of $20 per share for 20 out of 30 trading days prior to February 11, 2029. In accordance with SEC rules, the number of shares reported represents payout based on the ~~exchange ratio determined at closing, each share of Energy Vault, Inc. Common Stock was entitled to receive 6.7735 shares of Common Stock at the closing~~achievement of the ~~Business Combination.~~threshold performance goal, which is the $15 Share Price Target. The ~~assumed~~award may be subject to accelerated vesting, as described above in the section entitled “Employment Arrangements with Energy Vault’s Named Executive Officers.”

(7)

These RSUs vest as to 33.33% upon the achievement of the Company’s common stock reaching a market price of $11 per share for 20 out of 30 trading days prior to December 16, 2026 (the “$11 Share Price Target”), 33.33% upon the achievement of the Company’s common stock reaching a market price of $13 per share for 20 out of 30 trading days prior to December 16, 2026 and 33.33% upon the achievement of the Company’s common stock reaching a market price of $15 per share for 20 out of 30 trading days prior to December 16, 2026. In accordance with SEC rules, the number of shares reported represents payout based on the achievement of the threshold performance goal, which is the $11 Share Price Target. The award may be subject to accelerated vesting, as described above in the section entitled “Employment Arrangements with Energy Vault’s Named Executive Officers.”

Non-Executive Director Compensation

The following table sets forth in summary form information concerning the compensation that was earned by or paid to each of our non-executive directors during the year ended December 31, 2022. Mr. Piconi served as a member of our Board in 2022, however, he is compensated as an employee for service as our Chief Executive Officer and does not receive additional compensation for his service as a member of our Board. See “Executive Compensation — 2022 Summary Compensation Table” above for information regarding Mr. Piconi’s compensation.

2022 Director Compensation Table

Name	Fees Earned or Paid in Cash ($)		Stock Awards ($)(1)		Total ($)
Larry M Paulson		75,000		136,292		211,292
Bill Gross		75,000		126,785		201,785
Zia Huque		75,000		126,785		201,785
Thomas Ertel		75,000		136,292		211,292
Mary Beth Mandanas		75,000		136,292		211,292
Henry Elkus		75,000		126,785		201,785

(1)

Amounts reflect the grant date fair value of stock awards granted during the applicable year computed in accordance with ASC Topic 718, rather than the amounts paid to or realized by the named individual. We provide information regarding the assumptions used ~~for purposes of this table does not include~~to calculate the value of ~~any Earn Out Shares (as defined in Form S-1 filed with the SEC on January 13, 2021) issuable in respect of the awards reflected in the table. The Energy Vault, Inc. equity~~all stock awards in Note 15 to our consolidated financial statements included in our Annual Report on Form 10-K for the ~~table above have been assumed by us and converted into comparable awards.~~year ended December 31, 2022.

~~Post-Closing Executive Compensation~~The table below shows the aggregate numbers of stock awards held as of December 31, 2022 by each non-employee director. None of our non-employee directors held any outstanding option awards as of December 31, 2022.

Name	Total Stock Awards Outstanding
Larry M Paulson		46,516
Bill Gross		43,271
Zia Huque		43,271
Thomas Ertel		46,516
Mary Beth Mandanas		46,516
Henry Elkus		43,271

~~2021 Energy Vault Director Compensation~~

~~Except with respect to Mr. Piconi (whose~~

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We maintain a non-executive director compensation ~~is reflected in~~program whereby each non-executive director receives the ~~2020 and 2021 Summary Compensation Table set forth above), we had no formal arrangements under which directors receive compensation~~following amounts for their service on ~~our Board of Directors or its committees during 2021.~~the Board:

~~Post-Closing Director Compensation~~•

~~On May 11, 2022, the compensation committee of our Board of Directors approved a non-employee director compensation program.~~

~~Pursuant to the approved non-employee director compensation program, non-employee directors will receive~~ an annual cash retainer of $75,000, paid quarterly in ~~arrears. We will reimburse non-employee directors for their reasonable out-of-pocket expenses incurred in connection with attending Board and Board committee meetings.~~arrears;

~~In addition, non-employee directors will receive grants~~

•

a grant of ~~equity awards under the 2022 Plan. Upon joining the Board, a new non-employee director will receive~~ RSUs with an approximate grant date value of $200,000 ~~and committee chairs will be granted additional~~upon the non-executive director’s initial election or appointment to the Board (the “Initial Award”);

•

a grant of RSUs with ~~a target~~an approximate grant date value of ~~$15,000. This new~~$15,000 in addition to the Initial Award if the non-executive director ~~equity award~~is the chair of a committee;

•

if the non-executive director has served on our Board for at least six months as of the date of an annual meeting of stockholders, a grant of RSUs with an approximate grant date value of $100,000 (the “Annual Award”); and

•

a grant of RSUs with an approximate grant date value of $15,000 in addition to the Annual Award if the non-executive director is the chair of a committee.

The Initial Award will vest in three annual installments on each anniversary of the date of grant, subject to the director’s continued service on the Board through each such anniversary. In connection with each annual meeting of stockholders, each non-employee director who will continue to serve on the Board will receive RSUs with an approximate grant date value of $100,000. These annual equity awardsAnnual Awards will vest in

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full on the earlier of the one-year anniversary of the date of grant or the date of the next annual meeting of stockholders, subject to the director’s continued service on the Board through such date. ~~Both new director equity awards and annual equity awards will vest in full in~~In the event of a change in control, ~~while~~both the ~~non-employee~~Initial Award and Annual Awards will vest in full so long as the non-executive director remains in ~~service.~~service through such change in control.

Equity Compensation Plan Information

The following table provides information as of December 31, 2022 regarding shares of common stock that may be issued under our equity compensation plans, consisting of our 2017 Stock Incentive Plan (the “2017 Plan”), our 2020 Stock Incentive Plan (the “2020 Plan”), our 2022 Equity Incentive Plan (the “2022 Plan”) and our 2022 Employment Inducement Award Plan (the “Inducement Plan”).

Plan Category	Number of securities to be issued upon exercise of outstanding options, restricted stock units and rights (a)		Weighted Average exercise price of outstanding options (b)			Number of securities remaining available for future issuance under equity compensation plan (excluding securities referenced in column (a)) (c)
Equity compensation plans approved by security holders:		24,891,683(1)		$	0.79(2)		2,850,738(3)
Equity compensation plans not approved by security holders:					—		8,000,000(4)
Total		24,891,683		$	0.79		10,850,738

(1)

Includes 1,093,313 shares of common stock issuable upon the exercise of outstanding options and 23,798,370 shares subject to restricted stock units that will entitle the holder to one share of common stock for each unit that vests.

(2)

Restricted stock units do not have an exercise price and are not included in the weighted average exercise price of outstanding options.

(3)

As of December 31, 2022, there were 203,205 shares available for grant under the 2017 Plan, 6,531,495 shares available for grants under the 2020 Plan and 20,862,091 shares available for grants under the 2022 Plan. Pursuant to the terms of the 2022 Plan, the number of shares of common stock available for issuance under the 2022 Plan automatically increases on each March 1, until and including March 1, 2031, by an amount equal to the lesser of (A) 4% of the aggregate number of shares of common stock outstanding on the final day of the immediately preceding calendar year and (B) such smaller number of shares of common stock as is determined by the board of directors.

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SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The following table sets forth information known to us regarding the beneficial ownership of our common stock as of ~~October 28, 2022~~March 23, 2023 by:

•

each person who is known by us to be the beneficial owner of more than five percent (5%) of the outstanding shares of Common Stock;

•

each current named executive officer and director of the Company; and

•

all current executive officers and directors of the Company, as a group.

Beneficial ownership for the purposes of the following table is determined in accordance with the rules and regulations of the SEC. A person is a “beneficial owner” of a security if that person has or shares “voting power,” which includes the power to vote or to direct the voting of the security, or “investment power”, which includes the power to dispose of or to direct the disposition of the security or has the right to acquire such powers within 60 days. The beneficial ownership percentages set forth in the table below are based on ~~137,839,965~~137,616,733 shares of Common Stock issued and outstanding as of ~~October 28, 2022.~~March 23, 2023.

Unless otherwise noted in the footnotes to the following table, and subject to applicable community property laws, the persons and entities named in the table have sole voting and investment power with respect to their beneficially owned common stock. Unless otherwise indicated, the business address of each of the directors and executive officers of each of the directors and executive officers of the Company is 4360 Park Terrace Drive, Suite 100, Westlake Village, California ~~93161.~~91361.

Name and Address of Beneficial Owner(1)	Number of Shares Beneficially Owned		Percentage of Class		Number of Shares Beneficially Owned		Percentage of Class
Named Executive Officers and Directors:
Named Executive Officers and Directors:
Robert Piconi(1)		14,953,084		10.8%		15,709,084		11.4%
Andrea Pedretti(2)		1,956,431		1.4%
Josh McMorrow						—		*
Marco Terruzzin~~(3)~~(2)		545,267		*%		764,017		*
Henry Elkus(4)		3,487,876		2.5%
Theresa Fariello						—		—
Bill Gross~~(5)~~(3)		7,790,302		5.7%		7,578,438		5.5%
Zia Huque~~(6)~~		7,552,864		5.5%		—		*
Thomas Ertel		—		—		—		*
Mary Beth Mandanas		—		—		—		*
Larry M. Paulson~~(7)~~(4)		665,382		*		1,157,382		1.1%
All Directors and Executives Officers of Energy Vault as a Group (15 individuals) (8)		36,951,206		26.8%
Five Percent Holders:
NeoTribe Ventures I, L.P. for itself and as nominee for NeoTribe Associates I, L.P. (9)		9,276,423		6.7%
Prime Movers Lab(10)		7,552,864		5.5%
SoftBank Vision Fund (AIV M2) L.P. acting by its manager, SB Investment Advisers (UK) Limited (11)		18,535,631		13.4%
All Directors and Executives Officers of Energy Vault as a Group (14 individuals) (5)						28,001,744		20.0%
Five Percent Holders:
SoftBank Vision Fund (AIV M2) L.P.(6)						18,535,631		13.5%

Means less than 1%.

(1)

~~Consists of~~Includes (i) ~~6,337,192~~650,000 shares of Common Stock ~~held of record by Mr. Piconi;~~underlying restricted stock units that vest within 60 days; (ii) 4,307,946 shares of Common Stock held of record by the Piconi Family 2021 Delaware Trust for which Mr. Piconi serves as investment advisor; and (iii) 4,307,946 shares of Common Stock held of record by the Piconi 2021 Delaware Trust for which Mr. Piconi serves as investment advisor.

(2)

~~Consists of (i) 1,126,475~~Includes 218,750 shares of Common Stock ~~and (ii) 829,956 shares of Common Stock issuable pursuant to~~underlying restricted stock units that ~~will be vested~~vest within 60 ~~days of October 28, 2022. In connection~~days.

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~~with a personal loan entered into in December 2019, Mr. Pedretti has granted to the lender a security interest in 292,345 shares of our Common Stock.~~

(3)

~~Reflects of 545,267 shares of Common Stock.~~

~~(4)~~

Consists of (a) 23,413 shares of Common Stock held directly by Henry Elkus; (b) 2,357,944 shares of Common Stock held directly by HSI Energy Vault I LLC; (c) 933,839 shares of Common Stock held directly by HSI Energy Vault II LLC; (d) 116,728 shares of Common Stock held directly by HSI EV Brasil LLC; and (e) 55,952 shares of Common Stock held directly by EN Fund I, A Series of Helena Special Investments AL Ventures, LP (each such entities, an “Helena Affiliate”). Helena Special Investments LLC has voting and dispositive control over the shares held by each Helena Affiliate, and Helena Special Investments LLC and Mr. Elkus may each be deemed to be the beneficial owner of such securities. The business address of this stockholder is 515 S. Flower St. Suite 5100, Los Angeles, CA 90071.

~~(5)~~

~~Consists of (a)~~Includes (i) 1,590,997 shares of Common Stock held directly by Idealab Studio, LLC; ~~(b) 4,822,950~~(ii) 4,611,086 shares of Common Stock held directly by Gross Goodstein Living Trust; ~~(c)~~(iii) 100,000 shares of Common Stock held directly by Marcia Goodstein, Bill Gross’s wife, as custodian for a UTMA account; and ~~(d)~~(iv) 1,276,355 shares of Common Stock held directly by Idealab Holdings, LLC. Bill Gross manages and maintains investment and dispositive power over the securities held by Idealab Studio, LLC and

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Idealab Holdings, LLC. Mr. Gross is co-trustee of the Gross Goodstein Living Trust with Mrs. Goodstein. As such, Mr. Gross may be deemed to share beneficial ownership of the common stock held directly by Idealab Studio, LLC, Idealab Holdings, LLC, Gross Goodstein Living Trust and Mrs. Goodstein. Mr. Gross disclaims beneficial ownership of such securities. The business address of Idealab Studio, LLC and Idealab Holdings, LLC is 130 West Union Street, Pasadena, CA 91103.

~~(6)~~(4)

Consists of (a) 1,245,077 shares of Common Stock held directly by Energy Vault PML SPV 1 LP; (b) 6,217,287 shares of Common Stock held directly by Prime Movers Growth Fund I, LP; and (c) 90,500 shares of Common Stock held directly by Prime Movers Lab Fund II LP. The business address of this stockholder is PO Box 12829, Jackson, WY 83002.

~~(7)~~

~~Consists of (a) 56,126 shares of Common Stock held directly by Mr. Paulson; and (b)~~Includes (i) 609,256 shares of Common Stock held through the Larry M Paulson and Gretchen V Paulson Family Trust dated ~~Sept~~September 4, 2019, and any amendments thereto (the “Paulson Trust”); and (ii) 852,000 shares of ~~which he is a trustee. Consequently,~~Common Stock underlying warrants that are exercisable within 60 days held through the Paulson Trust. Mr. Paulson is trustee of the Paulson Trust, and as a result, may be deemed to be the beneficial owner of ~~such. He~~the securities held by the trust, but disclaims beneficial ownership of any shares other than to the extent he may have a pecuniary interest therein, directly or indirectly. The number of shares held post-Business Combination includes shares issuable upon exercise of 556,500 private warrants held by Larry M Paulson and Gretchen V Paulson Family Trust dated Sept 4, 2019 that become exercisable 30 days after the completion of the Business Combination.shares.

~~(8)~~(5)

~~Consists of~~Includes (i) ~~35,564,750~~1,808,506 shares of Common Stock underlying restricted stock units that vest within 60 days; and (ii) ~~829,956~~852,000 shares of Common Stock ~~issuable pursuant to restricted stock units~~underlying warrants that ~~will be vested~~are exercisable within 60 ~~days of October 28, 2022, and (iii) shares issuable upon exercise of 556,500 private warrants.~~days.

~~(9)~~(6)

~~Consists of 9,276,423 shares of Common Stock to be issued in exchange held directly by NeoTribe Ventures I, L.P. for itself~~Based on our records and ~~as nominee for NeoTribe Associates I, L.P. The business address of this stockholder is 2477 Sand Hill Road, Suite 150, Menlo Park, CA 94025.~~

~~(10)~~

~~See footnote 6.~~

~~(11)~~

a Form 3 and Schedule 13G filed on February 22, 2022. Consists of 18,535,631 shares of Common Stock held directly by SoftBank Vision Fund (AIV M2) L.P. ~~acting by its manager,~~ SB Investment Advisers (UK) ~~Limited.~~Limited (“SBIA UK”) has been appointed as alternative investment fund manager (“AIFM”) and is exclusively responsible for managing SoftBank Vision Fund (AIV M2) L.P. in accordance with the Alternative Investment Fund Managers Directive and is authorized and regulated by the UK Financial Conduct Authority accordingly. As AIFM of SoftBank Vision Fund (AIV M2) L.P., SBIA UK is exclusively responsible for making all decisions related to the acquisition, structuring, financing and disposal of SoftBank Vision Fund (AIV M2) L.P.’s investments. As a result, SBIA UK may be deemed to share beneficial ownership over the securities reported herein. The business address of ~~this stockholder~~SoftBank Vision Fund (AIV M2) L.P. is ~~1 Circle Star Way, San Carlos, CA 94070.~~251 Little Falls Drive, Wilmington, DE 19808. The business address of SBIA UK is 69 Grosvenor Street, London W1K 3JP, United Kingdom.

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DELINQUENT SECTION 16(A) REPORTS

Section 16(a) of the Exchange Act requires our executive officers and directors, and persons who beneficially own more than 10% of our outstanding common stock, to file initial reports of beneficial ownership and reports of changes in beneficial ownership with the ~~SEC. Such persons are required by~~ SEC ~~regulations~~and to ~~furnish~~provide us with copies of all ~~Section 16(a) forms filed by~~ such ~~person.~~reports.

Based solely on our review of ~~such forms furnished to us,~~applicable Section 16 reports filed with the SEC and written representations from certain reporting persons, we believe that ~~all filing requirements applicable to our executive officers, directors and greater-than-10% stockholders~~ during the fiscal year ended December 31, ~~2021~~2022 through the date of the filing of our Proxy Statement, all Section 16(a) filing requirements were ~~satisfied.~~satisfied, except for (i) a Form 4 filing for each of William Gross, Thomas Ertel, Zia Huque, Mary Beth Mandanas and Larry Paulson that were collectively filed on February 10, 2023, relating to grants of restricted stock units on December 16, 2022 and (ii) a Form 4 filing for Andrea Pedretti filed on March 3, 2023, relating to a transaction that was completed on February 24, 2023.

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CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

Since January 1, ~~2021,~~2022, there has not been, nor is there any proposed transaction in which we were or will be a party or in which we were or will be a participant, involving an amount that exceeded or will exceed $120,000 and in which any director, executive officer, beneficial owner of more than 5% of any class of our voting securities, or any member of the immediate family of any of the foregoing persons had or will have a direct or indirect material interest, other than the compensation arrangements and other agreements and transactions which are described in “Executive and Director Compensation” section and the transactions described below.

Indemnification agreements

We have entered into indemnification agreements with each of our directors and executive officers. These agreements require us to indemnify these individuals to the fullest extent permitted under Delaware law against liabilities that may arise by reason of their service to us, and to advance expenses incurred as a result of any proceeding against them as to which they could be indemnified. We also intend to enter into indemnification agreements with our future directors and executive officers.

Related Party Transactions

Consulting Agreement

On October 25, 2019, Energy Vault SA, the wholly owned subsidiary of Energy Vault, Inc., entered into a consulting agreement with Mauro Pedretti, father of Andrea Pedretti. Under the terms of the agreement, Mr. Pedretti’s duties include consulting engineering services and assistance as requested by our chief executive officer and other members of our management team. The term of the agreement commenced in 2019 and continues to be effective. As compensation for his services, Mr. Mauro Pedretti is paid an annual salary of CHF 193,860 (approximately $181,178 based on an exchange ratio of 1.07 CHF to one U.S. dollar).

Consulting Services ~~Agreement~~Agreements

On February 14, 2022, we entered into a consulting services agreement with EVFY, Inc. (“EVFY”), an affiliate of Marco Terruzzin, our Chief Product Officer. EVFY has agreed to provide consulting services relating to identify business opportunities and engage with potential customers in exchange for $30,000 per month during the term of such contract. Our contract with EVFY has a 36-month term, and either party may terminate such contract for convenience upon thirty days’ notice starting from the one year anniversary of the effective date of the contract.

Wantley Manor Consultancy Ltd. (“Wantley”), a former affiliate of Laurence Alexander, our Chief Marketing Officer has provided various marketing related services to us and our predecessor since 2018. We paid approximately $1.2 million for such marketing and sales costs in 2022. Each such short-term engagement may be terminated at the sole option of the Company. In February 2023, Laurence Alexander stepped down from Wantley, which continues to provide services to us. Laurence Alexander’s son is currently Managing Director of Wantley.

Policies and procedures for related party transactions

We have adopted a related-party transaction policy setting forth the policies and procedures for the review and approval or ratification of transactions involving us and “related persons.” For the purposes of this policy, a “related person” is (i) any person who is or was a director or executive officer of the company or is a nominee for election as a director (as such terms are defined below) of the company at any time since the beginning of the last fiscal year; (ii) any individual or entity known to us to be the beneficial owner of more than five percent (5%) of any class of our voting securities at the time of the occurrence or existence of a related party transaction; (iii) any immediate family member of an individual identified under (i) and (ii) above; (iii) any other family members (cousins, etc.) over which an individual identified under (i) and (ii) above has control or influence, or who has control or influence over that individual; (iv) any entity or entities in

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STOCKHOLDER PROPOSALS

Stockholders may present proposals for action at a future meeting only if they comply with the requirements of the proxy rules established by the SEC and our Bylaws. Pursuant to Rule 14a-8 under the Exchange Act and our Bylaws, stockholder proposals that are intended to be presented at our ~~2023~~2024 annual meeting of stockholders and included in the proxy statement, form of proxy and other proxy solicitation materials related to that meeting must be received by us not earlier than the one hundred and twentieth (120th) day prior to such annual meeting and not later than the close of business on the later of (A) the ninetieth (90th) day prior to such annual meeting and (B) the tenth (10th) day following the day on which notice of the date of such annual meeting was mailed or public disclosure of the date of such annual meeting was made, whichever first ~~occurs..~~occurs. Stockholders are also advised to review our Bylaws, which contain additional advance notice requirements, including requirements with respect to advance notice of stockholder proposals and director nominations. Under our Bylaws, the deadline for submitting a stockholder proposal outside of Rule 14a-8 or a nomination for director that you intend to present at our ~~2023~~2024 annual meeting of stockholders is not earlier than the one hundred and twentieth (120th) day prior to such annual meeting and not later than the close of business on the later of (A) the ninetieth (90th) day prior to such annual meeting and (B) the tenth (10th) day following the day on which notice of the date of such annual meeting was mailed or public disclosure of the date of such annual meeting was made, whichever first occurs.

In addition to satisfying the foregoing requirements under our Bylaws, to comply with the universal proxy rules, stockholders who intend to solicit proxies in support of director nominees other than the Company’s nominees must provide notice to the Company that sets forth the information required by Rule 14a-19 under the Exchange Act by the later of 60 calendar days prior to the date of the annual meeting or the 10th calendar day following the day on which public announcement of the date of the annual meeting is first made by the Company. In addition, shareholders who intend to solicit proxies in support of director nominees other than the company’s nominees must also comply with the additional requirements of Rule 14a-19(b).

Stockholder proposals must be in writing and should be addressed to our Secretary, at our principal executive offices at 4360 Park Terrace Drive, Suite 100, Westlake Village, California, 91361. It is recommended that stockholders submitting proposals direct them to our Secretary and utilize certified mail, return receipt requested in order to provide proof of timely receipt. The Chairman of the Annual Meeting reserves the right to reject, rule out of order, or take other appropriate action with respect to any proposal that does not comply with these and other applicable requirements, including conditions set forth in our Bylaws and conditions established by the SEC.

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STOCKHOLDERS SHARING THE SAME LAST NAME AND ADDRESS

To reduce the expense of delivering duplicate proxy materials to stockholders who may have more than one account holding our stock but sharing the same address, we have adopted a procedure approved by the SEC called “householding.” Under this procedure, certain stockholders of record who have the same address and last name, and who do not participate in electronic delivery of proxy materials, will receive only one copy of our Proxy Statement and Annual Report and, as applicable, any additional proxy materials that are delivered until such time as one or more of these stockholders notifies us that they want to receive separate copies. This procedure reduces duplicate mailings and saves printing costs and postage fees, as well as natural resources. Stockholders who participate in householding will continue to have access to and utilize separate proxy voting instructions.

If you receive a single set of proxy materials as a result of householding, and you would like to have separate copies of our annual report and other proxy materials mailed to you, please submit a written request to our Secretary, at 4360 Park Terrace Drive, Suite 100, Westlake Village, California, 91361, or call our Investor Relations at 929-232-3561, and we will promptly send you what you have requested. You can also contact our Secretary or Investor Relations if you received multiple copies of the annual meeting materials and would prefer to receive a single copy in the future, or if you would like to opt out of householding for future mailings.

OTHER MATTERS

We do not know of any business, other than as described in this Proxy Statement that should be considered at the Annual Meeting. If any other matters should properly come before the Annual Meeting, it is the intention of the persons named in the accompanying form of proxy to vote the proxies held by them in accordance with their best judgment.

To assure the presence of the necessary quorum and to vote on the matters to come before the Annual Meeting, please indicate your choices on the enclosed proxy and date, sign, and return it promptly in the envelope provided. The signing of a proxy by no means prevents you from attending and voting at the Annual Meeting.

AVAILABLE INFORMATION

We are subject to the informational requirements of the Exchange Act, and, in accordance therewith, file reports and other information with the SEC. The SEC maintains an Internet site that contains our reports, proxies and information statements that we have filed electronically with the SEC at http://www.sec.gov. The information contained on our website, other than this proxy statement, is not considered proxy solicitation material and is not incorporated by reference herein.

~~A COPY~~IMPORTANT NOTICE REGARDING THE AVAILABILITY OF ~~OUR ANNUAL REPORT ON FORM 10-K~~PROXY MATERIALS FOR THE YEAR ENDED DECEMBER 31, 2021 (INCLUDING FINANCIAL STATEMENTS AND SCHEDULES THERETO), WHICH WE FILED WITH THE SEC ON FEBRUARY 10, 2022, WILL BE PROVIDED WITHOUT CHARGE TO ANY PERSON TO WHOM THIS PROXY STATEMENT IS MAILED UPON THE WRITTEN REQUESTANNUAL MEETING OF ~~ANY SUCH PERSON TO MR. JOSH MCMORROW, SECRETARY,~~STOCKHOLDERS OF ENERGY VAULT HOLDINGS, INC. TO BE HELD ON MAY 25, 2023:

A copy of our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, as filed with the SEC, except for exhibits, will be furnished without charge to any of our stockholders upon written request to Energy Vault Holdings, Inc., 4360 ~~PARK TERRACE DRIVE, SUITE~~Park Terrace Drive, Suite 100, ~~WESTLAKE VILLAGE, CALIFORNIA, 91361. THE SHARE OWNERSHIP OF THE STOCKHOLDER SUBMITTING THE STOCKHOLDER PROPOSAL MAY BE OBTAINED BY USING THE CONTACT INFORMATION ABOVE.~~Westlake Village, California, 91361, Attention: Mr. Josh McMorrow, Secretary. This Proxy Statement and our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, are also available on the SEC’s website at www.sec.gov.

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THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED.KEEP THIS PORTION FOR YOUR RECORDSDETACH AND RETURN THIS PORTION ONLYTO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS:Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) DateSCAN TOVIEW MATERIALS & VOTETo withhold authority to vote for anyindividual nominee(s), mark “For AllExcept” and write the number(s) of thenominee(s) on the line below.0 0 00 0 00000583048_1 R1.0.0.3For Withhold For AllAll All ExceptThe Board of Directors recommends you vote FORthe following:1. Election of two Class I members of the Board ofDirectors.Nominees1a. Mary Beth Mandanas 1b. Larry PaulsonENERGYENERGY VAULT HOLDINGS, ~~INC.4360~~INC. 4360 PARK TERRACE DRIVE, SUITE ~~100WESTLAKE~~100 WESTLAKE VILLAGE, CA ~~93161VOTE~~93161 SCAN TO VIEW MATERIALS & VOTE VOTE BY INTERNET - www.proxyvote.com or scan the QR Barcode ~~aboveUse~~above Use the Internet to transmit your voting instructions and for electronic delivery ~~ofinformation.~~of information. Vote by 11:59 P.M. ET on ~~12/19/2022.~~05/24/2023. Have your proxy card in hand ~~whenyou~~when you access the web site and follow the instructions to obtain your records and to ~~createan~~create an electronic voting instruction ~~form.During~~form. During The Meeting - Go to www.virtualshareholdermeeting.com/~~NRGV2022You~~NRGV2023 You may attend the meeting via the Internet and vote during the meeting. Have ~~theinformation~~the information that is printed in the box marked by the arrow available and follow ~~theinstructions.VOTE~~the instructions. VOTE BY PHONE - ~~1-800-690-6903Use~~1-800-690-6903 Use any touch-tone telephone to transmit your voting instructions. Vote by 11:59 P.M. ~~ETon 12/19/2022.~~ET on 05/024/2023. Have your proxy card in hand when you call and then follow ~~theinstructions.VOTE~~the instructions. VOTE BY ~~MAILMark,~~MAIL Mark, sign and date your proxy card and return it in the postage-paid envelope we ~~haveprovided~~have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood,NY ~~11717.The~~11717. TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. KEEP THIS PORTION

FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY The Board of Directors recommends you vote FOR the following: For Withhold For All All All Except To withhold authority to vote for any individual nominee(s), mark “For All Except” and write the number(s) of the nominee(s) on the line below. 1. Election of Class II members of the Board of Directors. Nominees 1a. Theresa Fariello 1b. Thomas Ertel 1c. Tahsinul Zia Huque The Board of Directors recommends you vote FOR proposal 2: For Against ~~Abstain2.~~Abstain 2. Ratification of the appointment of independent registered public accounting firm for the fiscal year ~~endingDecember~~ending December 31, ~~2022.Please~~2023. Please sign exactly as your name(s) appear(s) hereon. When signing ~~asattorney,~~as attorney, executor, administrator, or other fiduciary, please give ~~fulltitle~~full title as such. Joint owners should each sign personally. All holders ~~mustsign.~~must sign. If a corporation or partnership, please sign in full corporate ~~orpartnership~~or partnership name by authorized ~~officer.0000583048_2 R1.0.0.3~~officer. 0000594913_1 R1.0.0.6 Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date ENERGY VAULT HOLDINGS, INC. 4360 PARK TERRACE DRIVE, SUITE 100 WESTLAKE VILLAGE, CA 93161 SCAN TO VIEW MATERIALS & VOTE VOTE BY INTERNET - www.proxyvote.com or scan the QR Barcode above Use the Internet to transmit your voting instructions and for electronic delivery of information. Vote by 11:59 P.M. ET on 05/24/2023. Have your proxy card in hand when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form. During The Meeting - Go to www.virtualshareholdermeeting.com/NRGV2023 You may attend the meeting via the Internet and vote during the meeting. Have the information that is printed in the box marked by the arrow available and follow the instructions. VOTE BY PHONE - 1-800-690-6903 Use any touch-tone telephone to transmit your voting instructions. Vote by 11:59 P.M. ET on 05/024/2023. Have your proxy card in hand when you call and then follow the instructions. VOTE BY MAIL Mark, sign and date your proxy card and return it in the postage-paid envelope we have provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717. TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY The Board of Directors recommends you vote FOR the following: For Withhold For All All All Except To withhold authority to vote for any individual nominee(s), mark “For All Except” and write the number(s) of the nominee(s) on the line below. 1. Election of Class II members of the Board of Directors. Nominees 1a. Theresa Fariello 1b. Thomas Ertel 1c. Tahsinul Zia Huque The Board of Directors recommends you vote FOR proposal 2: For Against Abstain 2. Ratification of the appointment of independent registered public accounting firm for the fiscal year ending December 31, 2023. Please sign exactly as your name(s) appear(s) hereon. When signing as attorney, executor, administrator, or other fiduciary, please give full title as such. Joint owners should each sign personally. All holders must sign. If a corporation or partnership, please sign in full corporate or partnership name by authorized officer. 0000594913_1 R1.0.0.6 Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date

	Page
PROXY STATEMENT SUMMARY		1
PROPOSAL 1: ELECTION OF ~~TWO~~THREE DIRECTORS		4
CORPORATE GOVERNANCE		7
PROPOSAL 2: RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM		1516
AUDIT COMMITTEE REPORT		1718
EXECUTIVE OFFICERS		1819
EXECUTIVE AND DIRECTOR COMPENSATION		2021
SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT		2830
DELINQUENT SECTION 16(A) REPORTS		3032
CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS		3133
STOCKHOLDER PROPOSALS		3335
STOCKHOLDERS SHARING THE SAME LAST NAME AND ADDRESS		3436
OTHER MATTERS		3436
AVAILABLE INFORMATION		3436

Name	Type of Award	Number of shares or units of stock that have not vested (#)		Market value of shares or units of stock that have not vested ($)(4)		Purchase Price ($)
Robert Piconi(1)	Restricted Stock		4,909,995		48,610,654		0.0025
Andrea Pedretti(2)	RSU		2,343,407		23,200,547		—
Marco Terruzzin(3)	Restricted Stock		609,615		6,035,400		0.0025