UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No.     )

Filed by the Registrant  ☒                             Filed by a Party other than the Registrant  ☐

Check the appropriate box:

CLEAN ENERGY FUELS CORP.

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

CLEAN ENERGY FUELS CORP.

4675 MacArthur Court, Suite 800

Newport Beach, California 92660

April 5, 2019

Dear Stockholder,

You are cordially invited to attend the annual meeting of stockholders (“Annual Meeting”) of Clean Energy Fuels Corp. (the “Company,” “we,” “us” or “our”) on Thursday, May 16, 2019, at 9:00 a.m. Pacific Time. The Annual Meeting will be a virtual meeting conducted via live audio webcast that can be accessed by visiting www.virtualshareholdermeeting.com/CLNE2019. At this website, you will be able to listen to the Annual Meeting live, submit questions for our management, directors and representatives of our independent registered public accounting firm in attendance, and submit your vote while the Annual Meeting is being held.

We are pleased to take advantage of laws and rules that allow issuers to make use of the Internet in conducting a meeting of stockholders, as well as in furnishing proxy materials. As a result, we will not only host the Annual Meeting virtually on the Internet, but we will also furnish the proxy materials for the Annual Meeting to our stockholders on the Internet. We believe this use of the Internet meaningfully lowers our costs, increases efficiencies and helps reduce the environmental impact of the Annual Meeting, while permitting and encouraging increased stockholder attendance and engagement.

The accompanying notice of Annual Meeting and proxy statement include the agenda for the Annual Meeting, explain the matters that will be discussed and voted on at the Annual Meeting and provide certain other information about our Company.

Your vote is very important. Please vote as promptly as possible. Thank you for supporting our Company.

CLEAN ENERGY FUELS CORP.

4675 MacArthur Court, Suite 800

Newport Beach, California 92660

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

May 16, 2019

The annual meeting of stockholders (“Annual Meeting”) of Clean Energy Fuels Corp. (the “Company,” “we,” “us” or “our”) will be held on Thursday, May 16, 2019, at 9:00 a.m. Pacific Time via live audio webcast that can be accessed by visiting www.virtualshareholdermeeting.com/CLNE2019, for the following purposes:

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

The Company’s Board of Directors has fixed the close of business on March 25, 2019 as the record date for the determination of stockholders entitled to notice of and to vote at the Annual Meeting and any adjournment or postponement thereof. A list of stockholders entitled to vote at the Annual Meeting will be available for inspection by any stockholder for any purpose germane to the Annual Meeting at our principal executive offices during normal business hours for a period of 10 days before the Annual Meeting.

CLEAN ENERGY FUELS CORP.

4675 MacArthur Court, Suite 800

Newport Beach, California 92660

2019 PROXY STATEMENT

TABLE OF CONTENTS

CLEAN ENERGY FUELS CORP.

4675 MacArthur Court, Suite 800

Newport Beach, California 92660

2019 PROXY STATEMENT

GENERAL INFORMATION

The board of directors (“Board”) of Clean Energy Fuels Corp., a Delaware corporation (the “Company,” “we,” “us” or “our”), is providing this proxy statement (“Proxy Statement”) and all other proxy materials to you in connection with the solicitation of proxies for use at our 2019 annual meeting of stockholders (“Annual Meeting”). The Annual Meeting will be held on Thursday, May 16, 2019, at 9:00 a.m. Pacific Time (“PT”) via live audio webcast that can be accessed by visiting www.virtualshareholdermeeting.com/CLNE2019, or any adjournment or postponement thereof, for the purposes stated in this Proxy Statement. In addition to any other business that may properly come before the Annual Meeting, stockholders are being asked to vote at the Annual Meeting on the following three proposals:

This Proxy Statement summarizes the information you need to know in order to vote on these proposals in an informed manner.

Use of the Internet

Pursuant to rules adopted by the SEC, we have elected to provide access to our proxy materials for the Annual Meeting, including this Proxy Statement and our annual report for the year ended December 31, 2018, which includes our annual report on Form 10-K for such year (“Annual Report”), on the Internet. Accordingly, on or about April 5, 2019, we are mailing a Notice of Internet Availability of Proxy Materials (“Notice”) to all of the Company’s stockholders of record and beneficial owners as of the record date for the Annual Meeting. The Notice will include instructions on how you may access the proxy materials for the Annual Meeting at www.proxyvote.com. Stockholders will not receive printed copies of the proxy materials for the Annual Meeting unless they request them, in which case printed copies of the proxy materials and a paper proxy card will be provided at no charge. Any stockholder may request to receive the proxy materials for the Annual Meeting in printed form by mail or electronically by e-mail on an ongoing basis until the one-year anniversary of the date of the Annual Meeting by following the instructions in the Notice. We encourage you to take advantage of the availability of our proxy materials on the Internet in order to lower our printing and delivery costs and help reduce the environmental impact of the Annual Meeting.

We have held our annual meetings of stockholders virtually since 2017, and we have again elected to hold this year’s Annual Meeting virtually on the Internet. We have made this decision for a number of reasons, including:

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Stockholders who choose to attend the Annual Meeting will do so by accessing a live audio webcast of the Annual Meeting via the Internet at www.virtualshareholdermeeting.com/CLNE2019. Please see “Attending the Annual Meeting” below for more information.

Record Date and Outstanding Shares

All stockholders that owned shares of our common stock at the close of business on March 25, 2019, the date which has been fixed by the Board as the record date, are entitled to vote at the Annual Meeting.

On the record date, 204,650,402 shares of our common stock were outstanding.

Voting Matters

Voting Rights

Each share of our common stock entitles the owner of the share to one vote on all matters to be voted on at the Annual Meeting.

Quorum Requirement

We will have the required quorum to conduct the business of the Annual Meeting if holders of a majority of the outstanding shares of our common stock as of the record date are present or represented by proxy at the Annual Meeting. Pursuant to our amended and restated bylaws, shares represented by proxies that reflect abstentions and broker non-votes (discussed under “Effect of Not Providing Voting Instructions; Broker Non-Votes” below) will be counted for purposes of determining the presence of a quorum at the Annual Meeting.

Effect of Not Providing Voting Instructions; Broker Non-Votes

Stockholders of Record. You are a “stockholder of record” if your shares are registered directly in your name with Computershare Trust Company, N.A., our transfer agent. If you were a stockholder of record at the

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close of business on the record date for the Annual Meeting and you submit a valid proxy that does not provide voting instructions with respect to your shares, all shares represented by your proxy will be voted in accordance with the recommendation of our Board on each proposal to be presented at the Annual Meeting, as described in this Proxy Statement.

Beneficial Owners of Shares Held in Street Name. You are a “beneficial owner of shares held in street name” if your shares are not held of record in your name but are held by a broker, bank or other nominee on your behalf as the beneficial owner. If your shares were held in street name at the close of business on the record date for the Annual Meeting, you must provide voting instructions to your broker, bank or other nominee if you want your vote to count on the election of directors (Proposal 1) and the approval, on an advisory, non-binding basis, of the compensation of our named executive officers (Proposal 3). These proposals constitute “non-routine” matters on which a broker, bank or other nominee is not entitled to vote shares held for a beneficial owner without receiving specific voting instructions from the beneficial owner. As a result, if you hold your shares in street name and you do not instruct your broker, bank or other nominee on how to vote your shares on Proposals 1 and 3, then no vote will be cast on these proposals on your behalf and a “broker non-vote” will occur. Your broker, bank or other nominee will, however, have discretion to vote uninstructed shares on the ratification of the appointment of KPMG LLP as our independent registered public accounting firm (Proposal 2), because this proposal constitutes a “routine” matter on which a broker, bank or other nominee is entitled to vote shares held on behalf of a beneficial owner even without receiving specific voting instructions from the beneficial owner. As a result, broker non-votes are not expected to occur in the vote on Proposal 2. Moreover, if you are a beneficial owner of shares in street name and you properly submit a voting instruction form to your broker, bank or other nominee that is signed but unmarked with respect to your vote on Proposals 1, 2 or 3, applicable rules will generally permit your broker, bank or other nominee to vote your shares on these proposals in accordance with the recommendations of the Board as set forth in this Proxy Statement.

Voting Requirements

The election of directors (Proposal 1) will be determined by a plurality of the votes cast by shares present or represented by proxy at the Annual Meeting and entitled to vote on the proposal at the Annual Meeting. This means that the ten nominees who receive the highest number of affirmative votes will be duly elected as directors. As a result, because of the nature of this voting requirement, abstentions and broker non-votes, if any, will have no effect on the outcome of the election of directors.

The ratification of the appointment of KPMG LLP as our independent registered public accounting firm (Proposal 2) and the approval, on an advisory, non-binding basis, of the compensation of our named executive officers (Proposal 3) must each be approved by the affirmative vote of a majority of the votes cast on the proposal by shares present or represented by proxy at the Annual Meeting and entitled to vote on the proposal at the Annual Meeting. As a result, abstentions, if any, will have no effect on the outcome of the votes on these proposals because abstentions are not considered to be present or entitled to vote with respect to the proposal for which they occur; broker non-votes are not expected to occur on Proposal 2 because, as discussed above, brokers, banks and other nominees will be entitled to vote uninstructed shares held in street name on this proposal; and broker non-votes, if any, will have no effect on the outcome of the vote on Proposal 3 because, pursuant to our amended and restated bylaws, broker non-votes are not considered to be present or entitled to vote with respect to the proposal for which they occur.

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The following is a summary of the voting requirements for each proposal to be voted on at the Annual Meeting:

Tabulation of Votes

The inspector of elections of the Annual Meeting will tabulate the votes of our stockholders at the Annual Meeting. All shares of our common stock represented by proxy at the Annual Meeting will be voted in accordance with the instructions given on the proxy, as long as the proxy is properly submitted and unrevoked and is received by the applicable deadline, all as described under “How to Cast or Revoke Your Vote” below. If the Annual Meeting is adjourned or postponed, properly submitted and unrevoked proxies will remain effective and will be voted at the adjourned or postponed Annual Meeting, and stockholders will retain the right to revoke any such proxy until it is actually voted at the adjourned or postponed Annual Meeting.

Voting Results

Preliminary results will be announced at the Annual Meeting. Final results will be reported in a current report on Form 8-K to be filed with the SEC within four business days after the Annual Meeting concludes. If the official results are not available at that time, we will provide preliminary voting results in such a Form 8-K and will provide the final results in an amendment to the Form 8-K as soon as they become available.

How to Cast or Revoke Your Vote

Stockholders of Record

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

Votes submitted by proxy on the Internet or by telephone must be received by 11:59 p.m. Eastern Time on Wednesday, May 15, 2019 to be counted. Votes submitted on the Internet during the Annual Meeting by stockholders attending the meeting and votes submitted by mail must be received no later than the close of voting at the Annual Meeting to be counted.

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Once you have submitted your proxy on the Internet or by telephone or mail, you may revoke it at any time before it is voted at the Annual Meeting by taking any one of the following actions:

To be effective, any later-dated vote must be received by the applicable deadline for the voting method used, as described above, and any written notice of revocation must be received no later than the close of voting at the Annual Meeting. Only your latest-dated vote that is received by the deadline applicable to the voting method used will be counted.

Beneficial Owners of Shares Held in Street Name

If you are a beneficial owner of shares held in street name, you have the right to instruct your broker, bank or other nominee on how to vote your shares at the Annual Meeting. You should do so by following the instructions provided by your broker, bank or other nominee regarding how to vote your shares and how to revoke a previously submitted proxy. The availability of Internet, telephone or other methods to vote your shares by proxy will depend on the voting processes of the broker, bank or other nominee that holds your shares.

Attending the Annual Meeting

All stockholders that owned our common stock at the close of business on the record date for the Annual Meeting, or their duly appointed proxies, may attend and participate in the Annual Meeting. Even if you plan to attend the Annual Meeting, you are encouraged to vote on the Internet, by telephone or by mail before the Annual Meeting, to ensure that your vote will be counted. Please see “How to Cast or Revoke Your Vote” above for voting instructions.

To attend and participate in the Annual Meeting, stockholders will need to access the live audio webcast of the meeting. To do so, stockholders of record will need to visit www.virtualshareholdermeeting.com/CLNE2019 and use their 16-digit control number provided in the Notice to log in to this website, and beneficial owners of shares held in street name will need to follow the instructions provided by the broker, bank or other nominee that holds their shares. We encourage stockholders to log in to this website and access the webcast before the Annual Meeting’s start time. Further instructions on how to attend, participate in and vote at the Annual Meeting, including how to demonstrate your ownership of our common stock as of the record date in order to gain access to the Annual Meeting, are available at www.proxyvote.com.

Submitting your proxy before the Annual Meeting will not affect your right to vote at the Annual Meeting if you decide to attend; however, your attendance at the Annual Meeting after having submitted a valid proxy will not in and of itself constitute a revocation of your proxy. In order to do so, you must submit an online vote during the webcast of the Annual Meeting reflecting your new vote.

Solicitation

This solicitation is made by our Board, and we will bear the entire cost of soliciting proxies, including the costs of preparing, printing, assembling and mailing the Notice, any printed copies of this Proxy Statement, the proxy card, the Annual Report or our other proxy materials that may be requested by stockholders, and any additional information that we may elect to furnish to stockholders. We will provide copies of solicitation materials to brokers, banks and other nominees holding in their names shares of our common stock that are beneficially owned by others for forwarding to the beneficial owners of those shares who have requested printed

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materials, and we may reimburse persons representing beneficial owners for their costs of forwarding solicitation materials to the beneficial owners. Solicitations will be made primarily through the Notice and the solicitation materials made available on the Internet or via e-mail or in print to those who request copies, but may be supplemented by telephone, mail, e-mail or personal solicitation by our directors, executive officers or other employees. We will pay no additional compensation to these individuals for these activities. In addition, although we have not engaged employees for the specific purpose of soliciting proxies or a proxy solicitation firm to assist us in soliciting proxies, we may elect to engage and pay the cost of such employees or such a proxy solicitation firm at any time.

Separate Copy of Annual Report or Other Proxy Materials

We have adopted a procedure called “householding,” which the SEC has approved. Under this procedure, we are delivering a single copy of the Notice and, if requested, this Proxy Statement and our Annual Report to multiple stockholders who share the same address, unless we have received contrary instructions from a stockholder. This procedure reduces our printing and mailing costs and other fees. Stockholders who participate in householding will continue to be able to request and receive separate proxy cards. Additionally, upon written or oral request, we will deliver promptly a separate copy of the Notice, this Proxy Statement or the Annual Report to any stockholder at a shared address to which we have delivered a single copy of these documents. To receive a separate copy of the Notice, this Proxy Statement or the Annual Report, or to notify us that you wish to receive separate copies of our proxy materials for future annual meetings of our stockholders, write to the attention of Investor Relations at the address of our principal executive offices or call (949) 437-1000. Stockholders who share an address and are receiving multiple copies of our proxy materials may also request to receive a single copy of the Notice, this Proxy Statement and the Annual Report or our proxy materials for future annual meetings of our stockholders by writing or calling us at the address or telephone number provided above.

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SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

The two tables below show the beneficial ownership of certain persons with respect to our common stock, our only outstanding class of voting securities. Except as indicated by the footnotes to these tables, we believe, based on the information furnished or otherwise available to us, that the persons and entities named in these tables have sole voting and investment power with respect to all shares of common stock shown as beneficially owned by them, subject to applicable community property laws.

We have determined beneficial ownership as shown in these tables in accordance with the rules of the SEC. In accordance with these rules, in computing the number of shares of our common stock beneficially owned by a person and the percentage ownership of that person, we deemed to be outstanding all shares of our common stock subject to (1) stock options held by that person that are currently exercisable or exercisable within 60 days after March 25, 2019, and (2) restricted stock units (“RSUs”) held by that person that are subject to vesting and settlement within 60 days after March 25, 2019. We did not, however, deem these shares outstanding for the purpose of computing the percentage ownership of any other person. We calculated percentage ownership as shown in these tables based on 204,650,402 shares of our common stock outstanding on March 25, 2019. The information in these tables is not necessarily indicative of beneficial ownership for any other purpose, and the inclusion of any shares in these tables does not constitute an admission of beneficial ownership of the shares.

The following table shows the amount and percentage of our common stock beneficially owned by each holder of more than 5% of the outstanding shares of our common stock:

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The following table shows the amount and percentage of our common stock beneficially owned on March 25, 2019 by each of our named executive officers and current and nominated directors and by all of our current executive officers and directors as a group:

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PROPOSAL 1

ELECTION OF DIRECTORS

General

Our Board, acting pursuant to our amended and restated bylaws, has determined that the number of directors constituting the full Board is to be ten. Upon the recommendation of our nominating and corporate governance committee, the Board has nominated Andrew J. Littlefair, Stephen A. Scully, John S. Herrington, James C. Miller III, Warren I. Mitchell, Philippe Montantême, Momar Nguer, James E. O’Connor, Kenneth M. Socha and Vincent C. Taormina for election as members of the Board. You are being asked to vote on the election of each of these ten director nominees.

Each of the nominees is a director of our Company and, except for Messrs. Montantême and Nguer, was elected by our stockholders at our 2018 annual meeting of stockholders. Messrs. Montantême and Nguer were appointed as directors in September 2018 pursuant to director designation rights granted to Total Marketing Services in June 2018, in a transaction described under “Certain Relationships and Related Party Transactions” below.

Upon re-election at the Annual Meeting, each director will serve a one-year term until the next annual meeting of our stockholders and until his successor is duly elected and qualified or until his earlier resignation or removal. During the course of a term, the Board may appoint a new director to fill any vacant seat. In that event, the newly appointed director would complete the term of the director he or she replaced or, if appointed to fill a vacancy caused by an increase to the size of the Board, serve until the next annual meeting of our stockholders. Each of the Board’s director nominees has agreed to serve if elected, and we have no reason to believe any nominee will be unable to serve. If, however, any nominee cannot serve, then your proxy will be voted for another nominee proposed by the Board or, if no such other nominee is proposed, a vacancy will occur.

We, as a matter of policy, encourage our directors to attend meetings of our stockholders and, in 2018, all of our directors attended our annual meeting.

Director Nominees

The names of the director nominees, their ages as of January 31, 2019, their current positions and offices with our Company and other information about their professional backgrounds are shown below. We believe each of these nominees contributes to the Board’s effectiveness as a whole based on the wealth of executive leadership experience they bring to the Board, as well as the other specific attributes, qualifications and skills described below. There are no family relationships between any director, executive officer or person nominated or chosen to become a director or executive officer of our Company, and except as described under “General” above with respect to Messrs. Montantême and Nguer, there are no arrangements or understandings between any director or nominee and any other person pursuant to which such individual was or is selected as a director or nominee.

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Andrew J. Littlefair, one of our founders, has served as our President, Chief Executive Officer and a director since June 2001. From 1996 to 2001, Mr. Littlefair served as President of Pickens Fuel Corp., and from 1987 to 1996, Mr. Littlefair served in various management positions at Mesa, Inc., an energy company. From 1983 to 1987, Mr. Littlefair served in the Reagan Administration as a Staff Assistant to the President. Mr. Littlefair served as Chairman of NGV America, the leading U.S. advocacy group for natural gas vehicles, from March 1993 to March 2011. Mr. Littlefair has served on the board of directors of Hilltop Holdings Inc. (formerly PlainsCapital Corporation), a reporting company under the Securities Exchange Act of 1934, as amended (“Exchange Act”), since 2009. Mr. Littlefair earned a B.A. from the University of Southern California.

Stephen A. Scully has served as a director of our Company since January 2014 and was appointed as Chairman of the Board on January 1, 2018. Mr. Scully was founder and President of the Scully Companies, a California-based truck leasing and specialized contract carriage provider. He started the Scully Companies immediately after graduating from the University of Southern California in 1981 and subsequently sold it to Ryder System in January 2011. The Scully Companies was the largest independent asset-based logistics provider in the western United States. Since selling the Scully Companies, Mr. Scully has been a private investor. Additionally, he was the Chairman of the Board of the National Truck Leasing System from 1999 to 2010, a board member of the Truck Rental and Leasing Association from 1990 to 1999, a board member of Ameriquest Transportation and Logistics Resources from 2007 to 2008 and is a former member of the California Trucking Association.

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

James C. Miller III has served as a director of our Company since May 2006. Mr. Miller served on the board of governors of the United States Postal Service from April 2003 to December 2011 and as its Chairman from January 2005 to 2008. Mr. Miller served on the board of directors of the Washington Mutual Investors Fund from October 1992 to December 2017, and served on the board of directors of the J.P. Morgan Value Opportunities Fund from December 2001 to January 2014. From 1981 to 1985, Mr. Miller was Chairman of the U.S. Federal Trade Commission in the Reagan Administration, and also served as Director of the U.S. Office of Management and Budget from 1985 to 1988. In 2017, Mr. Miller began serving as a Senior Fellow of the Administrative Conference of the United States, an independent federal agency dedicated to improving the administrative process. Mr. Miller earned a B.B.A. from the University of Georgia and a Ph.D. from the University of Virginia.

Warren I. Mitchell has served as a director of our Company since May 2005 and was Chairman of the Board from 2005 through 2017. For over 40 years, until his retirement in 2000, Mr. Mitchell worked in various positions at Southern California Gas Company, including as President beginning in 1990 and Chairman beginning in 1996. Mr. Mitchell serves as Chairman of the board of directors of The Energy Coalition, a non-profit organization devoted to education on energy management. Mr. Mitchell earned a B.S. and an M.B.A. from Pepperdine University and completed the Stanford Executive Program.

Philippe Montantême has served as a director of our Company since September 2018, when he was appointed to the Board pursuant to Total Marketing Services’ director designation rights described elsewhere in the Proxy Statement. Mr. Montantême has served as Senior Vice President, Strategy Marketing Research of Total Marketing Services since July 2013. Mr. Montantême joined the TOTAL group of companies (referred to as the “TOTAL Group”) in 1984 and served in various operational positions in France and Africa. He joined the Strategy Development team of the TOTAL Group in 1984, and became Head of Strategy for the TOTAL Group’s downstream activities in Africa and the Middle East in 1996. From 1999 to 2004, Mr. Montantême occupied several positions in the TOTAL Group’s Lubricants business unit, including Head of the Global Supply Chain.

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From 2005 to 2011, he served as Vice President of the TOTAL Group’s Special Fluids business unit, and from 2011 to 2013, he returned to the TOTAL Group’s Lubricants business unit to serve as Vice President. Mr. Montantême graduated as a Chemical Engineer from the École Nationale Supérieure de Chimie in Toulouse and holds an MBA from the EM Lyon Business School.

Momar Nguer has served as a director of our Company since September 2018, when he was appointed to the Board pursuant to Total Marketing Services’ director designation rights described elsewhere in this Proxy Statement. Mr. Nguer has served as President of Total Marketing Services and as a member of the Executive Committee of the TOTAL Group since April 2016. Mr. Nguer began his career in 1982 in Hewlett Packard France’s Finance Department. He joined the TOTAL Group in 1984, serving in various downstream positions. He was appointed Vice President, Marketing of the TOTAL Group’s Senegal operations in 1985, and Vice President, Retail Network & Consumers of the TOTAL Group’s Africa operations in 1991. Mr. Nguer became Chief Executive Officer of the TOTAL Group’s marketing affiliate in Cameroon in 1995, and Chief Executive Officer of the TOTAL Group’s marketing affiliate in Kenya in 1997. In 2000, he was appointed Executive Vice President, Total East Africa & Indian Ocean in the TOTAL Group’s Refining & Marketing business. From 2007 to 2011, he served as Vice President, Aviation Fuel at Total Refining & Marketing, and from December 2011 to April 2016, he served as Senior Vice President, Africa and the Middle East at Total Marketing Services. Mr. Nguer has also served as a member of the TOTAL Group’s Performance Management Committee since January 2012, and Chairman of the Group Diversity Council since August 2015. Mr. Nguer received a Master in Public Law from the University of Paris and a MBA from ESSEC Business School.

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

Kenneth M. Socha has served as a director of our Company since January 2003. From 1995 until his retirement at the end of 2014, Mr. Socha served as a Senior Managing Director of Perseus, L.L.C., a private equity fund management company. Previously, Mr. Socha practiced corporate and securities law as a partner in the New York office of Dewey Ballantine. Mr. Socha earned an A.B. from the University of Notre Dame and a J.D. from Duke University Law School.

Vincent C. Taormina has served as a director of our Company since April 2008. Mr. Taormina is the former Chief Executive Officer of Taormina Industries, Inc., one of California’s largest solid waste and recycling companies. In 1997, Taormina Industries merged with Republic Services, a publicly-held waste handling company that operates throughout the United States. Mr. Taormina served as Regional Vice President of Republic Services from 1997 to 2001, managing the overall operations of eleven western states. Since 2001, Mr. Taormina has served and continues to serve as a consultant to Republic Services and is a private investor. Mr. Taormina is a past President of the Orange County Solid Waste Management Association, past President Elect of the California Refuse Removal Council and a former board member of the Waste Recyclers Council for the National Solid Waste Management Board.

Director Emeritus

In September 2018, T. Boone Pickens, a founder and director of our Company since June 2001, retired from his position as a director. Upon his retirement, the Board designated Mr. Pickens to serve as Director Emeritus,

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an honorary position in recognition of his long-standing, loyal and dedicated services and singularly significant contributions to the Company. As Director Emeritus, Mr. Pickens is invited to attend meetings of the Board, but is not considered a director of the Company and is not entitled to vote on any matter presented to the Board. As a result, he is not one of the director nominees for election by our stockholders at the Annual Meeting.

Selecting Our Director Nominees

Under its charter and our corporate governance guidelines, our nominating and corporate governance committee is responsible for reviewing with the Board, on an annual basis, the requisite skills and characteristics of potential new Board members, as well as the composition of the Board as a whole. This assessment includes an analysis of each member’s qualifications as a director and each member’s independence, as well as consideration of age, experience and other diversity factors in the context of the needs of the Board.

Minimum Criteria

Pursuant to our corporate governance guidelines, a majority of our directors must meet the standards for independence as required by Nasdaq, and no director may serve on more than three other public company boards of directors unless approved in advance by the Board. Further, applicable Nasdaq rules provide that at least one member of our Board must meet the criteria for an “audit committee financial expert” as defined by SEC rules, and the members of certain of our Board committees must satisfy enhanced independence and financial expertise standards under applicable Nasdaq and SEC rules. We also believe all directors should possess the following attributes:

Other than the foregoing, there are no stated minimum criteria for director nominees, and the nominating and corporate governance committee may consider these factors and any such other factors as it deems appropriate. The nominating and corporate governance committee does, however, review the activities and associations of each potential director candidate to ensure there is no legal impediment, conflict of interest or other consideration that might hinder or prevent service on our Board.

Diversity

Although we do not have a formal policy with respect to Board diversity, the nominating and corporate governance committee strives to assemble a board of directors that brings to our Company a variety of perspectives, skills and expertise. In order to achieve this, the nominating and corporate governance committee considers individuals from various disciplines and backgrounds in recommending director nominees to the Board, including diversity characteristics that may be self-identified by directors or director nominees, such as race, gender, military service, or other socioeconomic or demographic characteristics. The nominating committee also seeks to recommend directors who possess a broad range of business, professional, governmental, community involvement and natural gas and energy industry experience.

The nominating and corporate governance committee assesses these and other factors as it deems appropriate in connection with its annual review of each director and the Board as a whole, and takes these

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factors into account when determining whether to nominate existing directors for re-election in connection with this annual review. The nominating and corporate governance committee also takes these factors into account when considering any director nominee outside of its annual review process, such as when a vacancy exists on the Board or when a stockholder suggests a new director candidate that the committee or the Board decides to consider for a mid-year appointment. In addition, as part of its annual self-evaluation process, the nominating and corporate governance committee assesses its consideration of diversity in identifying and evaluating director candidates, including the key qualifications, skills and attributes that it aims for directors to possess.

The nominating and corporate governance committee is committed to further diversifying the Board across a number of metrics, including gender. In September 2018, California enacted a law requiring publicly held corporations whose principal executive offices are located in California to have at least one female director on their boards by the end of the 2019 calendar year and, if our Board maintains its existing size, at least three female directors by the end of the 2021 calendar year. Because our principal executive offices are located in California, the nominating and corporate governance committee intends to comply with the requirements of this law on or before the applicable deadlines, and has commenced its search for one or more qualified female directors through a variety of sources. At present, the nominating and corporate governance committee is actively reviewing and evaluating a number of potential female director candidates for appointment or election at a future date.

Key Qualifications, Skills and Attributes

The nominating and corporate governance committee regularly reviews the appropriate skills and characteristics required of Board members in the context of the composition of the Board, our operating requirements, and the long-term interests of stockholders. When conducting its review of the key qualifications, skills and attributes desired of Board members, the nominating and corporate governance committee particularly considers:

The nominating and corporate governance committee views these qualifications, skills and attributes as critical to the Board’s ability to provide effective oversight of the Company in light of our business, strategy and operations.

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Director Nominee Evaluations

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

Director

Andrew J. Littlefair

Ö

Ö

Ö

Ö

Stephen A. Scully

Ö

Ö

Ö

Ö

John S. Herrington

Ö

Ö

Ö

Ö

Ö

James C. Miller III

Ö

Ö

Ö

Ö

Ö

Warren I. Mitchell

Ö

Ö

Ö

Ö

Philippe Montantême

Ö

Ö

Ö

Ö

Momar Nguer

Ö

Ö

Ö

Ö

Ö

James E. O’Connor

Ö

Ö

Ö

Ö

Kenneth M. Socha

Ö

Ö

Ö

Ö

Vincent C. Taormina

Ö

Ö

OUR BOARD RECOMMENDS A VOTE “FOR” THE ELECTION OF EACH DIRECTOR NOMINEE

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PROPOSAL 2

RATIFICATION OF APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

General

We are asking our stockholders to ratify the appointment of KPMG LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2019. KPMG LLP has audited our financial statements annually since 2001. Representatives of KPMG LLP are expected to be present at the Annual Meeting to answer appropriate questions and make a statement if they desire to do so.

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

Independent Registered Public Accounting Firm Fees and Services

The following table shows the aggregate fees billed to us for services rendered by KPMG LLP during the periods presented:

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Pre-Approval Policies and Procedures

Pursuant to our audit committee charter, all audit and permitted non-audit and tax services, as well as the fees and terms of such services, that are provided by our independent registered public accounting firm are pre-approved by the audit committee of the Board. In considering such services for approval, the audit committee considers, among other things, whether the provision of the services is compatible with maintaining the independence of our independent registered public accounting firm.

All services provided by KPMG LLP in 2017 and 2018 were pre-approved by the audit committee.

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

KPMG LLP AS OUR INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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PROPOSAL 3

ADVISORY, NON-BINDING VOTE TO APPROVE EXECUTIVE COMPENSATION

The Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (“Dodd-Frank Act”) enables our stockholders to vote to approve, on an advisory, non-binding basis, the compensation of our named executive officers as disclosed in this Proxy Statement in accordance with the SEC’s compensation disclosure rules. We currently provide our stockholders the opportunity to vote on such a proposal, commonly known and referred to below as a “say-on-pay” proposal, every year. As a result, following the Annual Meeting, the next vote on a say-on-pay proposal will occur at our 2020 annual meeting of stockholders.

As described in detail under “Compensation Discussion and Analysis” below, our executive compensation program is designed to attract, retain and motivate talented and dedicated executive officers; to reward individual performance and achievement of key corporate objectives without promoting excessive or unnecessary risk-taking; to align the interests of our executives with those of our stockholders; and to provide compensation that we believe is fair in light of an executive’s experience, responsibilities, performance and tenure with our Company and in relation to the compensation provided to other executives of our Company and certain peer companies. Under this program, determinations regarding each named executive officer’s compensation are based on, among other factors, the individual’s performance and contribution to our strategic plans and other business objectives; the Company’s overall performance, in light of business and industry conditions; general industry benchmarks and trends, including the compensation practices of certain peer companies; the level of the individual’s responsibility; the seniority of the individual; the individual’s long-term commitment to our Company; the available pool of individuals with similar skills; principles of pay equity and relative pay; the role of each compensation component in achieving the objectives of our executive compensation program; and the compensation committee’s business judgment and experience. Please read the “Compensation Discussion and Analysis” beginning on page 30 for additional details about our executive compensation program.

We are asking our stockholders to indicate their support for our named executive officer compensation as described in this Proxy Statement. We believe the compensation of our named executive officers is appropriate and serves to both incentivize and retain our highly skilled executive leadership team. Attracting, retaining and motivating key executives is crucial to our success. This say-on-pay proposal gives our stockholders the opportunity to indicate whether they approve of our named executive officers’ compensation. This vote is not intended to address any specific component of compensation, but rather relates to the overall compensation of our named executive officers and our executive compensation philosophy, policies and practices described in this Proxy Statement in accordance with the SEC’s compensation disclosure rules. Accordingly, we ask that our stockholders vote “FOR” the following resolution at the Annual Meeting:

“RESOLVED, that the Company’s stockholders approve, on an advisory, non-binding basis, the compensation of the Company’s named executive officers, as disclosed in the Company’s Proxy Statement for its 2019 Annual Meeting of Stockholders pursuant to the compensation disclosure rules of the Securities and Exchange Commission, including the Compensation Discussion and Analysis, the Summary Compensation Table and the other related tables and disclosure included therein.”

This say-on-pay proposal is being provided as required by Section 14A of the Exchange Act, and is advisory and therefore not binding on the Company, the compensation committee or our Board in any way. Our Board and our compensation committee value the opinions of our stockholders, and to the extent there is any significant vote against the named executive officer compensation as disclosed in this Proxy Statement, we will consider our stockholders’ concerns and the compensation committee will evaluate whether any actions are necessary to address these concerns.

OUR BOARD RECOMMENDS A VOTE “FOR” THE APPROVAL OF THE COMPENSATION OF

OUR NAMED EXECUTIVE OFFICERS, AS DISCLOSED IN THIS PROXY STATEMENT

PURSUANT TO THE COMPENSATION DISCLOSURE RULES OF THE SEC

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CORPORATE GOVERNANCE

Board and Committee Composition

The following sets forth certain key features of the composition of our Board and its standing committees:

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Board Committees

We have established an audit committee, compensation committee, nominating and corporate governance committee, hedging/derivative committee and stock option committee. Our Board also creates committees from time to time to oversee financing transactions or other significant corporate matters. Our Board and audit committee generally meet at least quarterly and our other committees meet on an as-needed basis. Each of the Board committees has the composition and responsibilities described below. Copies of the current charters of the audit committee, compensation committee, nominating and corporate governance and hedging/derivative committee, as adopted by the Board, are accessible on our website at http://investors.cleanenergyfuels.com/corporate-governance.

Audit Committee

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

Compensation Committee

We believe the functioning of our compensation committee complies with all applicable Nasdaq and SEC rules. The functions of this committee include:

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The compensation committee may designate one or more subcommittees, each subcommittee to consist of two or more members of the compensation committee, and may generally delegate its authority to any such subcommittee(s), and the compensation committee has delegated certain limited authority to grant equity awards under our equity incentive plans to the stock option committee, as described below.

Nominating and Corporate Governance Committee

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

Hedging/Derivative Committee

The functions of the hedging/derivative committee include carrying out the Board’s responsibilities related to oversight, direction and implementation of our hedging activities; interfacing with our hedging consultants and advisors regarding recommended hedging activities and strategies; and making recommendations to the Board regarding fees and other compensation to be paid to our hedging consultants and advisors.

Stock Option Committee

The stock option committee may approve grants of stock options and RSUs under the 2016 Performance Incentive Plan (“2016 Plan”) to employees of the Company.

Board Leadership Structure

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

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

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Board Role in Risk Oversight

Risk is inherent in every business. We face a number of risks, including business, operational, strategic, competitive, financial, political, legislative, environmental, safety and regulatory risks, as well as risks related to compensation, cybersecurity threats or incidents, capital expenditures, derivative transactions, commodity-based exposures, acquisitions or other strategic transactions and financing and other liquidity matters. In general, our management is responsible for the day-to-day management of the risks we face, while our Board, as a whole and through its committees, is responsible for the oversight of risk management.

In its risk oversight role, the Board and each of its committees regularly review and discuss, internally and with management, the material risks confronting our business, based on reports prepared and delivered by management that address these risks and other information deemed relevant. The Board also monitors our risk management and corporate governance policies, including the day-to-day risk management processes designed and implemented by management, and generally evaluates how management operates our Company with respect to risk exposures. These risks and risk management policies are also reviewed and analyzed in depth by the Board at an annual strategic planning session with members of senior management. Additionally, the Board considers the risks and vulnerabilities we face when granting authority to management and approving business strategies and particular transactions.

The Board performs its risk oversight function in part through its committees, which, except for the hedging/derivative committee, are comprised solely of independent directors. Each Board committee’s risk oversight role is as follows:

We believe our Board’s regular review and analysis of our material risks and risk management policies, as well as the role of our Board committees in the Board’s performance of its risk oversight function and our Board’s leadership structure (which separates the roles of Chairman of the Board and Chief Executive Officer, as discussed above), provide an appropriate level of independent oversight, including risk oversight, of our management.

Code of Ethics

We have adopted a written code of ethics applicable to our directors, officers and other employees, including our principal executive, financial and accounting officers and controller or persons performing similar functions. This code of ethics establishes policies to promote honest and ethical conduct, and is designed to comply with applicable Nasdaq and SEC rules. The nominating and corporate governance committee reviews our code of ethics periodically, and may propose or adopt additions or amendments that it determines are required or appropriate.

Our code of ethics is accessible on our website at http://investors.cleanenergyfuels.com/corporate-governance. We expect that any amendments to or waivers from certain provisions of our code of ethics applicable to any principal executive, financial or accounting officer or controller or persons performing similar functions will be disclosed on our website to the extent required by applicable Nasdaq or SEC rules.

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Corporate Governance Guidelines

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

Director Stock Ownership Guidelines

We believe it is important to encourage our directors to hold a material amount of our common stock, which links their long-term economic interest directly to that of our stockholders. To achieve this goal, we have established stock ownership guidelines applicable to our directors. These guidelines provide that each non-employee director is required to own shares of our common stock valued at $180,000 or more by the later of December 14, 2019 and five years after the date of a director’s initial election to the Board. Stock options are not counted toward satisfaction of these stock ownership requirements. Directors who attain this stock ownership level by the stated deadline will continue to satisfy the stock ownership requirements if the value of their stock holdings declines after such deadline solely due to a decrease in the trading price of our common stock. All of our non-employee directors, with the exception of Messrs. Montantême and Nguer, had satisfied these stock ownership guidelines as of the record date for the Annual Meeting. The Board has determined that the director stock ownership guidelines do not apply to Mr. Montantême or Mr. Nguer for so long as each is designated by Total Marketing Services to serve as a director and waives his right to receive compensation for serving on the Board. See the descriptions under “Proposal 1: Election of Directors—General” and “Director Compensation” for more information.

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

Stockholder Communications with the Board

We have adopted a formal process by which stockholders and interested parties may communicate with our Board, which is accessible on our website at http://investors.cleanenergyfuels.com/corporate-governance/contact-the-board. This centralized process assists the Board in reviewing and responding to communications from stockholders and other interested parties in an appropriate manner. Communications to the Board must be in writing and either mailed to our Corporate Secretary at the address of our principal executive offices or submitted electronically via our website. The communication can be addressed to one or more individual directors or to the Board as a group, and the name of any specific intended recipient(s) should be noted in the communication. Communications submitted by postal mail may be anonymous. The Corporate Secretary typically reviews all such communications and will forward them to the Board or any identified individual director(s), unless any such communication is deemed to be, in the Corporate Secretary’s discretion, unrelated to the duties and responsibilities of the Board or unduly hostile, threatening, illegal or similarly unsuitable for Board consideration.

Director Nomination Process

Our Board, as a whole and through our nominating and corporate governance committee, is responsible for identifying, evaluating and recommending nominees to serve as directors of our Company.

Identifying and Evaluating Director Nominees

Our nominating and corporate governance committee is responsible for identifying individuals qualified to become members of the Board and recommending these candidates to our Board for nomination or appointment.

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Our nominating and corporate governance committee may utilize a variety of methods to identify potential director candidates. For example, candidates may come to the attention of the nominating and corporate governance committee through current members of the Board, executive officers, professional search firms, stockholders or others. These candidates may be evaluated and considered by our nominating and corporate governance committee at any point during the year, including in connection with each annual meeting of our stockholders. For each such annual meeting, the nominating and corporate governance committee recommends to our Board certain director nominees to stand for election at the annual meeting based on the committee’s evaluation of all potential director candidates, including incumbent directors. The Board then selects its director nominees based on its determination, relying on the recommendation of and other information provided by the nominating and corporate governance committee as it deems appropriate, of the suitability of each potential director candidate to serve as a director of our Company.

Stockholder Recommendations of Director Candidates

In accordance with its charter, our nominating and corporate governance committee is responsible for considering and evaluating properly submitted stockholder recommendations of candidates for Board membership. Any such recommendation should be made in writing and delivered or mailed to our Corporate Secretary at the address of our principal executive offices, and should include the name, address and a current resume of the proposed director candidate, a statement describing the candidate’s qualifications and consent to serve on our Board if selected as a director nominee, and contact information for personal and professional references. The submission should also include the name and address of the stockholder who is submitting the proposed director candidate, the number of shares of our common stock that are owned of record or beneficially by the submitting stockholder and a description of all arrangements or understandings between the submitting stockholder and the proposed director candidate. We may also request that any proposed director candidate and any stockholder proposing a director candidate furnish us with such other information as may reasonably be required for our nominating and corporate governance committee to determine the eligibility of such proposed director candidate to serve as a director of our Company.

All properly submitted stockholder recommendations will be aggregated together and with any other director candidates proposed by other sources, for consideration and evaluation by our nominating and corporate governance committee, and will receive the same consideration by our nominating and corporate governance committee as is received by any other director candidate. In evaluating all director candidates, the nominating and corporate governance committee will consider, among other things, the director qualifications set forth in our corporate governance guidelines, as described in “Proposal 1: Election of Directors” above. Any stockholder-recommended director candidate that is selected by our nominating and corporate governance committee would be recommended by the committee as a director nominee to the Board, which would then consider and evaluate the candidate in the same manner and based on the same criteria and qualifications as other prospective director candidates. If approved by the Board, the stockholder-recommended candidate would be appointed as a director to a vacant seat on the Board or included in the Board’s slate of director nominees to stand for election at our next annual meeting of stockholders.

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Stockholder Nominations of Directors

A stockholder who wishes to nominate a director must comply with all applicable requirements set forth in our amended and restated bylaws. In accordance with these requirements, any stockholder nomination of a director must be made in writing and delivered to or mailed and received by our Corporate Secretary at the address of our principal executive offices within a specified time period before the annual meeting of stockholders at which the director nominee is to be up for election. See “Stockholder Proposals for 2020 Annual Meeting” below for information about these time periods in connection with our 2020 annual meeting of stockholders. Any such recommendation must include the following information:

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

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

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

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A stockholder who complies in full with all applicable requirements set forth in our amended and restated bylaws will be permitted to present the director nominee(s) at the applicable annual meeting of our stockholders, but will not be entitled to have the nominee included in our proxy materials for the applicable meeting unless an SEC rule requires that we include the director nominee in our proxy materials.

Sustainability and Safety

We believe that natural gas-fueled trucks, transportation and commercial vehicles are the best and most immediate solution for eliminating the negative impact of pollutants from diesel fuel and combatting climate change, and we take pride in our ability to deliver a cleaner vehicle fuel. In our Corporate Sustainability Report, which is accessible on our website at https://www.cleanenergyfuels.com/sustainability/, we describe our sustainability goals and our multi-pronged approach to achieving these objectives. Importantly, we aim to offer 100% Redeem™, our renewable natural gas vehicle fuel, at all of our vehicle fueling stations by 2025, 20 years ahead of California’s goal of transforming the state’s power supply to 100% renewable energy by 2045, and we also aim to reduce our company-wide carbon footprint by 25% by 2025. We encourage all of our stockholders to review our Corporate Sustainability Report to better understand our commitment to maintain and improve sustainability in the vehicle fuels marketplace.

We are committed to providing a safe and healthful working environment for our employees, which includes maintaining compliance with all applicable federal, state and local laws, rules and regulations relating to workplace safety and conditions. We strive for zero work-related injuries or illnesses. To that end, we have implemented written programs, including a Health and Safety Program and an Injury and Illness Prevention Program, which set forth our policies and procedures for workplace safety, hazard identification and correction, compliance, communication, investigations, training and recordkeeping. Any significant safety or health matters are communicated to the audit committee and/or the full Board.

The foregoing disclosure, including the statements about our sustainability and safety goals, contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (“Securities Act”), and Section 21E of the Exchange Act. Forward-looking statements are statements other than historical facts. These statements relate to future events or circumstances or our future performance, and they are based on our current assumptions, expectations and beliefs concerning future developments. Although these forward-looking statements reflect our good faith judgment based on available information, they involve known and unknown risks, uncertainties and other factors that may cause actual achievements, performance or other events to be materially different from any future achievements, performance or other events expressed or implied by the forward-looking statements. Factors that might cause or contribute to such differences include, among others: the willingness of fleets and other consumers to adopt natural gas as a vehicle fuel, and the rate and level of any such adoption; future supply, demand, use and prices of crude oil, gasoline, diesel, natural gas, and other vehicle fuels, including overall levels of and volatility in these factors; natural gas vehicle and engine cost, fuel usage, availability, quality, safety, convenience, design and performance, as well as operator perception with respect to these factors; our ability to capture a substantial share of the market for alternative vehicle fuels and vehicle fuels generally and otherwise compete successfully in these markets; the availability of environmental,

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tax and other government regulations, programs and incentives that promote natural gas or other alternatives as a vehicle fuel, including long-standing support for gasoline- and diesel-powered vehicles and growing support for electric and hydrogen-powered vehicles that could result in programs or incentives that favor these or other vehicles or vehicle fuels over natural gas; the effect of or potential for changes to federal, state or local greenhouse gas emissions regulations or other environmental regulations applicable to natural gas production, transportation or use; our ability to manage and grow our renewable natural gas business, including our ability to continue to receive revenue from sales of tradable credits we generate by selling conventional and renewable natural gas as vehicle fuel and the effect of any increase in competition for renewable gas supply; our ability to accurately predict natural gas vehicle fuel demand in the geographic and customer markets in which we operate and effectively calibrate our strategies, timing and levels of investments to be consistent with this demand; our ability to recognize the anticipated benefits of our natural gas fueling station network; construction, permitting and other factors that could cause delays or other problems at station construction projects; general political, regulatory, economic and market conditions; and the other risks discussed under “Risk Factors” in our annual report on Form 10-K for our fiscal year ended December 31, 2018, which was filed with the SEC on March 12, 2019 and is included as part of the Annual Report. In addition, we operate in a competitive and rapidly evolving industry in which new risks emerge from time to time, and it is not possible for us to predict all of the risks we may face, nor can we assess the impact of all factors on our business or the extent to which any factor or combination of factors could cause actual results to differ from our expectations. As a result of these and other potential risks and uncertainties, our forward-looking statements should not be relied on or viewed as guarantees of future events or conditions. All of our forward-looking statements speak only as of the date they are made and, except as required by law, we undertake no obligation to update publicly any forward-looking statements for any reason, including to conform these statements to actual results or to changes in our expectations.

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INFORMATION ABOUT EXECUTIVE OFFICERS

The names of our executive officers, their ages as of January 31, 2019, their current positions and offices with our Company and, for executive officers who are not also a member of our Board, other information about their backgrounds are shown below. We have entered into employment agreements with each of our executive officers, which are described under “Compensation Discussion and Analysis—Employment Agreements” below, that establish, among other things, each executive officer’s term of office. There are no arrangements or understandings between any of our executive officers and any other person pursuant to which such individual was or is selected as an officer of our Company.

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

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

Barclay F. Corbus has served as our Senior Vice President, Strategic Development, since September 2007. From July 2003 to September 2007, Mr. Corbus served as Co-Chief Executive Officer and a director of WR Hambrecht + Co, an investment bank that managed our initial public offering. Mr. Corbus joined WR Hambrecht + Co in 1999 and, from October 2000 to July 2003, Mr. Corbus served as Head of Investment Banking of WR Hambrecht + Co. From 1989 to 1999, Mr. Corbus worked with Donaldson, Lufkin & Jenrette. Mr. Corbus serves as a director of Overstock.com, a publicly traded company, and is a Trustee of the College of the Atlantic. Mr. Corbus earned an A.B. from Dartmouth College and an M.B.A. from Columbia Business School.

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COMPENSATION DISCUSSION AND ANALYSIS

Overview

This compensation discussion and analysis describes the material features of the compensation awarded to, earned by, or paid to each person who served as our principal executive officer (Andrew J. Littlefair) or principal financial officer (Robert M. Vreeland) in 2018, and the only two other individuals who were serving as executive officers at the end of 2018 (Mitchell W. Pratt and Barclay F. Corbus). Messrs. Littlefair, Vreeland, Pratt and Corbus are collectively referred to as our “named executive officers.” This analysis also discusses our compensation philosophy and objectives, the methodologies used for establishing the compensation programs for the named executive officers, and the policies and practices for administering such programs.

Business Highlights and Challenges

We are seeking to drive adoption of natural gas as a vehicle fuel by fleet vehicle operators, primarily in the trucking, airport, refuse, public transit, industrial and institutional energy user and government fleet markets. In executing this mission, we have adopted a strategic plan (the “Strategic Plan”) that sets meaningful objectives we expect will drive natural gas adoption as a vehicle fuel and expand our business in our key markets, while also conserving our capital and controlling our expenses. In implementing our Strategic Plan and our other business strategies, we have experienced meaningful progress and significant challenges.

Highlights of our achievements in 2018 included:

Factors that negatively affected our performance in 2018 included:

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Key 2018-2019 Pay Decisions

Key pay decisions for 2018 and 2019 to date include the following:

Compensation Program Objectives and Philosophy

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

To achieve these objectives, we maintain an executive compensation program that includes the following components: base salary, cash bonuses, equity incentives, change in control and post-termination severance compensation and other benefits. The compensation committee developed our executive compensation program by drawing on its experience and judgment in establishing programs it believes are appropriately rewarding and responsible for a growth company in a developing industry. The compensation committee reviews and evaluates our executive compensation program, including its objectives and the forms of compensation used to achieve these objectives, on at least an annual basis, and adjusts the program as it deems appropriate and considering factors it considers relevant in establishing appropriate levels and mix of compensation for our executives.

Process for Determining Executive Compensation

The compensation committee’s general practice is to establish the annual compensation mix and levels for each of our executives in the beginning of each fiscal year, typically in our first quarter in connection with annual

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performance reviews. Performing this process after the end of the prior year allows the compensation committee to incorporate into its analysis information on the Company’s and each individual’s performance during the prior year and to assess each executive’s overall contributions to the Company. The compensation committee then compiles this information to establish annual base compensation and performance-related targets and to adjust long-term incentives as appropriate.

Role of Compensation Consultant

Our compensation committee has the authority to engage the services of compensation consultants or other experts or advisors as it deems appropriate in fulfilling its responsibilities. Since 2012, the compensation committee has retained Semler Brossy Consulting Group, LLC (“Semler Brossy”) from time to time to assist the committee in performing its responsibilities. The compensation committee has the sole authority to approve the terms of this engagement, and Semler Brossy reports solely to the compensation committee under this engagement. Before engaging Semler Brossy, the compensation committee determined that Semler Brossy was independent after taking into consideration the factors set forth in applicable Nasdaq and SEC rules.

Compensation Consultant’s 2017 Review

In the third quarter of 2016, the compensation committee instructed Semler Brossy to complete a full review of the Company’s executive and director compensation programs within the context of the competitive market, including comparing the Company’s executive and director compensation components and levels with a group of selected peer companies and general industry survey data regarding executive compensation practices at companies with a similar market capitalization as our Company at the time of the review. Although the compensation committee primarily utilized and relied upon the review and other information provided by Semler Brossy in connection with its 2017 compensation decisions, the compensation committee also referenced some of the information provided by Semler Brossy in making certain 2018 compensation decisions, and this information further influenced 2018 compensation insofar as the compensation committee determined to maintain the compensation components and levels from 2017 that were informed by Semler Brossy’s review. Semler Brossy did not provide any services to the Company in 2018, and neither the compensation committee nor our management engaged any other compensation consultants in 2018.

2017 Compensation Peer Group

Selecting a group of our peer companies is challenging for many reasons, including principally our belief that we are the only publicly traded company whose primary line of business is to sell natural gas for use as a vehicle fuel. In selecting our peer companies for compensation purposes, our compensation committee generally sought to identify companies that are similar to us across a number of metrics and that, in the compensation committee’s view, compete with us for talent. As a result, with the assistance of Semler Brossy and with input from management, our compensation committee developed a group of peer companies in the third quarter of 2016 consisting of stand-alone, publicly traded companies that are of a similar size as us, based on revenue and market capitalization at the time the peer group was developed; have complex structures; and operate in our industry or in another heavily-regulated energy or non-mature industry. For 2017, the compensation committee selected the following companies as our peer companies for compensation purposes, which we refer to collectively as the “2017 Compensation Peer Group.”

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The compensation committee used data about the 2017 Compensation Peer Group, as well as general industry survey data and other information provided by Semler Brossy, to serve as market reference points for 2017 executive compensation decisions, including decisions about overall compensation levels, which the compensation committee benchmarked to be near the median of the total compensation paid to similar executives of the 2017 Compensation Peer Group, as well as each compensation component, optimum pay mix and the relative competitive landscape for our 2017 executive compensation program. For compensation decisions in 2018 and 2019 to date, the compensation committee did not tie named executive officer compensation (either specific elements of compensation or total compensation levels) to any predetermined benchmark.

Although we used benchmarking in 2017 to provide a guideline market reference point for total named executive officer compensation levels, the compensation committee believes this practice may not always be the most appropriate tool for setting compensation due to aspects of our business and objectives that may be unique to us. As a result, the compensation committee retains discretion to vary executive compensation components and levels from targeted market reference points by any degree and at any time.

Review of Stockholder Say-on-Pay Votes

Consistent with the preference of our stockholders, which was expressed at our annual meeting of stockholders held in May 2018, our stockholders have the opportunity to cast an advisory vote on executive compensation, or a “say-on-pay” vote, once every year, and the next such vote will occur at the Annual Meeting. At the Company’s annual meeting of stockholders held in 2018, our executive compensation received a favorable advisory vote from 69% of the votes cast on the proposal at the meeting (which excludes abstentions and broker non-votes).

Although this vote was sufficient to constitute approval of the Company’s 2017 executive compensation, it was significantly lower than in previous years. As a result of this lower level of support, various members of the Company’s senior management team, including its President and Chief Executive Officer and Chief Financial Officer, initiated engagement with approximately ten of the Company’s largest stockholders, collectively representing approximately 21% of the Company’s outstanding common stock (we note, however, that this specific engagement did not include TOTAL or Mr. Pickens because we are in frequent contact with each of these stockholders regarding our compensation practices and various other matters; when these large stockholders are included, approximately 52% of our outstanding common stock is represented). These engagement efforts resulted in the following specific feedback from one or more stockholders regarding our 2017 executive compensation program:

Based on the compensation committee’s review and evaluation of this stockholder feedback, as well as the continued meaningful stockholder support for our executive compensation in the 2017 say-on-pay vote, the compensation committee determined not to significantly alter our overall compensation policy or approach for 2018 as compared to prior years, but rather determined to take the following steps to address the specific concerns raised by our stockholders and to generally improve the implementation of our compensation objectives:

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We expect to continue to actively engage with our stockholders to discuss various compensation and governance matters and consider their feedback in determining named executive officer compensation. The compensation committee will also continue to consider the outcome of the Company’s say-on-pay votes, as well as this direct stockholder input, when making future compensation decisions for our named executive officers and in respect of our compensation program generally.

Assessment of Named Executive Officer Performance

The compensation committee believes our named executive officers are highly qualified, talented and dedicated to the Company. The following is a summary of the compensation committee’s assessment of the performance of each named executive officer in 2018:

Andrew J. Littlefair—President and Chief Executive Officer

Mr. Littlefair’s leadership of the Company resulted in growth in 2018 despite certain factors that negatively affected our performance as described above. Mr. Littlefair led our efforts to conserve cash resources, limit selling, general and administrative expenses and repay our convertible debt. He also spearheaded the Total Private Placement and launch of the Zero Now program. Mr. Littlefair oversaw our RNG business and led our efforts relating to the Expanded BP Supply Agreement. Mr. Littlefair worked diligently to promote the transition of shippers, manufacturers and other fleet operators to use natural gas vehicle fuel and to obtain commitments from these organizations to fuel at our stations. In addition, Mr. Littlefair served as our principal spokesperson to convey the Company’s message to customers, the finance and investor community, federal, state and local lawmakers and regulators, and the media.

Robert M. Vreeland—Chief Financial Officer

Since his appointment in the fourth quarter of 2014, Mr. Vreeland has directed our financial operations, including financial and capital plans and policies, accounting practices and procedures, and financial and tax reporting functions. He has also acted as the primary management contact for our audit committee and our independent registered public accounting firm. In 2018, he significantly contributed to the Total Private Placement, the Expanded BP Supply Agreement, the repayment of our convertible debt and our efforts to conserve cash resources, limit selling, general and administrative expenses and minimize and eliminate underperforming assets.

Mitchell W. Pratt—Chief Operating Officer and Corporate Secretary

Mr. Pratt directed and managed the Company’s operations, engineering, construction, IT and public affairs teams. He also made vital contributions to the planning, engineering, construction, operation and maintenance of our natural gas fueling stations.

Barclay F. Corbus—Senior Vice President, Strategic Development

Mr. Corbus oversaw the development of key growth opportunities and financing strategies for the Company. In particular, Mr. Corbus played important roles in the Total Private Placement, the expanded BP Supply Agreement, further reducing our debt levels and interacting with the finance and investor community.

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Components of Compensation

Our named executive officers’ compensation consists of the following components:

The following charts show the components of compensation for our named executive officers for 2018:

The compensation committee views the various components of compensation as distinct methods of achieving the various objectives of our compensation program and, as a result, it generally does not believe significant compensation derived from one component should negate or reduce compensation from other components. The compensation committee does, however, review and evaluate each executive’s total compensation as a whole, and it may make decisions regarding levels of certain compensation components based on this evaluation of overall compensation, including, for instance, determinations regarding target levels under our performance-based cash bonus plan or determinations regarding discretionary cash bonuses. The compensation committee also strives to provide an appropriate mix of long-term and short-term, cash and non-cash, and different forms of non-cash compensation; however, the compensation committee has not adopted formal plans or programs that allocate total compensation among these various characteristics.

In determining the mix and level of compensation components for our named executive officers, Mr. Littlefair typically makes recommendations to our compensation committee regarding appropriate pay. After reviewing Mr. Littlefair’s recommendations, our compensation committee makes the final determination regarding compensation mix and levels for each of our named executive officers. Although Mr. Littlefair submits recommendations to the compensation committee regarding his own proposed compensation, which the committee may take under advisement in its discretion, Mr. Littlefair does not participate in the compensation committee’s deliberations regarding his own compensation.

Mr. Littlefair’s recommendations, and the compensation committee’s decisions, regarding the mix and level of compensation components for each of our named executive officers are based on a number of factors, including, among others, the individual’s performance and contribution to our Strategic Plan and other business objectives; the Company’s overall performance, in light of business and industry conditions; general industry trends and market reference points; the level of the individual’s responsibility; the seniority of the individual; the

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individual’s long-term commitment to our Company; the available pool of individuals with similar skills; principles of pay equity and relative pay (we generally believe that executives with comparable experience, levels of responsibility and performance deserve comparable compensation, and that more experienced executives with a greater degree of responsibility and higher performance levels deserve higher levels of compensation on a relative basis); the role of each compensation component in achieving the objectives of our executive compensation program; and the compensation committee’s business judgment and experience.

Base Salary

We provide base salaries to: recognize the experience, skills, knowledge and responsibilities of our named executive officers; reward individual performance and contribution to our overall business goals; and retain our executives. The compensation committee reviews base salaries annually and relies on its judgment and discretion in determining the amount of each named executive officer’s base salary. Proposed base salaries are prepared by Mr. Littlefair and recommended to the compensation committee for its consideration and approval.

2018 and 2019 Base Salaries

In setting 2018 base salaries for our named executive officers, the compensation committee considered Mr. Littlefair’s recommendations; the Company’s performance, in light of business and industry conditions; the compensation committee’s assessment of each executive’s performance, experience, responsibilities, work demands and tenure, as well as the retention risk associated with each executive; and the Company’s key objectives of conserving cash resources and limiting selling, general and administrative expenses. Based on these factors, the compensation committee determined to maintain 2018 and 2019 base salaries for our named executive officers at their 2017 levels, except that Mr. Vreeland’s base salary was increased by 6% for 2019 to better align his compensation with his responsibilities and the base salaries of our other senior executives.

Base salaries for our named executive officers in 2017, 2018 and 2019 are as follows:

Cash Bonuses

2018 Performance-Based Cash Bonus Plan

Structure. Our compensation committee believes a performance-based cash incentive program is important to focus our management on, and reward our executives for, achieving key Company objectives on an annual basis, as well as to deliver adequate retention value when combined with our other incentive programs, which may be denominated in equity and/or designed to incentivize performance over a longer term than annually. Each year, our compensation committee approves a performance-based cash bonus plan and pays bonuses after reviewing our performance with respect to the criteria set forth in the plan, subject to the compensation committee’s discretion to pay amounts that are higher or lower than the payouts prescribed by the criteria set forth in the plan and subject to each named executive officer’s continued service as an executive officer of our Company as of the bonus payment date. The performance criteria for cash bonus awards under the plan for 2018 were designed to incentivize management to make decisions that align our corporate goals with our stockholders’ interests, without promoting excessive risk-taking.

For 2018, the total potential cash bonus award under our performance-based cash bonus plan for each of our named executive officers was based on the following:

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The compensation committee added the volume margin criteria in 2017 to incentivize our named executive officers to achieve higher margins for the GGEs of natural gas we deliver, which we view as a material operating data point and a key indicator of the success of our business initiatives and strategies. Under the performance-based cash bonus plan, the compensation committee has the discretion to determine and adjust the performance criteria, consider factors and developments it deems relevant and award overall bonuses in the amounts it deems appropriate.

Pursuant to the performance-based cash bonus plan, if we exceed a performance target, then each named executive officer receives a pro-rata portion of the incremental annual cash bonus amount, up to the next performance target. The financial performance criteria are prepared by our Chief Financial Officer based on our annual budget, and the strategic initiatives are developed by our Chief Executive Officer. The financial performance criteria and strategic initiatives are then presented to our compensation committee for review, comment, adjustment and ultimate approval.

Under our 2018 performance-based cash bonus plan:

Performance Criteria. For 2018, we defined the volume of GGEs of natural gas we delivered as (1) the volume of GGEs we sell to our customers as fuel, plus (2) the volume of GGEs dispensed at facilities we do not own but where we provide operation and maintenance services on a per-gallon or fixed fee basis, plus (3) our proportionate share of the GGEs sold as CNG by our joint venture Mansfield Clean Energy Partners, LLC.

For 2018, we defined volume margin as gross profit margin from the volumes of natural gas we delivered, excluding gross profit margin from certain royalties and from our sales of credits we generate under federal and state programs by selling RNG and conventional natural gas as a vehicle fuel, divided by the volumes of natural gas we delivered (where “gross profit margin” is our volume-related revenue less our volume-related cost of sales).

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For 2018, we defined adjusted EBITDA as net income (loss) attributable to Clean Energy Fuels Corp., determined in conformity with accounting principles generally accepted in the United States of America (“GAAP”), plus or minus income tax expense (benefit), plus or minus interest expense (income), plus depreciation and amortization expense, plus stock-based compensation expense; plus or minus loss (income) from equity method investments; and plus or minus any loss (gain) from changes in the fair value of derivative instruments. The following table shows adjusted EBITDA as we defined it for 2018 and also reconciles this non-GAAP financial measure to the GAAP measure net loss:

For 2018, our strategic initiatives included driving volume to our vehicle fueling infrastructure; launching a truck financing program (including the Zero Now program); obtaining additional capital; securing reauthorization of the federal alternative fuels excise tax credit; and reducing our selling, general and administrative expenses.

The base, middle and maximum targets for the performance criteria under the bonus plan approved by our compensation committee for 2018, as well as our actual performance for these criteria, are set forth in the following table:

Payouts. The compensation committee met in February 2019 to review our 2018 actual performance versus the performance criteria and strategic initiative targets described above and to determine what payouts, if any, would be made under the 2018 performance-based cash bonus plan. The compensation committee determined:

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As further detailed in the table below, the compensation committee awarded Mr. Littlefair a bonus equal to approximately 92% of his target (or “middle”) bonus and awarded the other named executive officers a bonus equal to approximately 89% of their target (or “middle”) bonuses for 2018.

2019 Performance-Based Cash Bonus Plan

In February 2019, the compensation committee approved our 2019 performance-based cash bonus plan. The plan has substantially the same design as our 2018 performance-based cash bonus plan, including the discretion afforded to our compensation committee in determining performance criteria, performance targets and actual payouts. Among other things, the 2019 plan provides that the total potential bonus award for each of our named executive officers under the plan will be based on the following:

2018 Discretionary Special Cash Bonuses

Our compensation committee may, in its discretion, award additional special cash bonuses to reward extraordinary efforts or performance by our named executive officers that the compensation committee believes are not otherwise covered by the performance criteria in our performance-based cash bonus plan. The compensation committee did not award any special cash bonuses to any of our named executive officers for performance in 2018.

Equity Incentives

We believe motivation of long-term performance is achieved through an ownership culture that encourages performance by our named executive officers through the use of stock-based awards. Our equity incentive plans have been established to provide certain of our employees, including our named executive officers, with incentives designed to align these employees’ interests with the interests of our stockholders. In general, the compensation committee develops its equity award determinations based on its judgments as to whether the

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equity awards provided to our named executive officers are sufficient to further our ownership culture, appropriately align the interests of our named executive officers with those of our stockholders and retain, motivate and adequately reward our executives on a long-term basis.

We currently sponsor the 2016 Plan, the Amended and Restated 2006 Equity Incentive Plan (“2006 Plan”) and an employee stock purchase plan (“ESPP”). The 2006 Plan became effective upon the closing of our initial public offering. The 2016 Plan, which replaced the 2006 Plan, became effective in May 2016 upon approval by our stockholders, at which time the 2006 Plan was no longer available for new awards. The 2006 Plan and the 2016 Plan are administered by our Board or our compensation committee. For more information about the 2006 Plan, the 2016 Plan and the ESPP, please see “Equity Compensation Plans” below.

We have historically granted our named executive officers the following three types of equity awards under our equity incentive plans: stock options, RSUs and price-vested units (“Price-Vested Units” or “PVUs”). In addition, in February 2019, our compensation committee awarded a new type of equity award to our named executive officers, which we refer to as volume-vested options (“Volume-Vested Options” or “VVOs”). Each of these types of equity awards is described below.

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In 2017, the compensation committee adopted equity award guidelines for our named executive officers regarding the timing and mix of equity awards (although, as guidelines, these practices remain subject to variance at the compensation committee’s discretion). Under these guidelines, our named executive officers receive annual equity awards in our first quarter, typically in connection with annual performance reviews. These annual equity awards include a mix of different types of awards, which may include stock options, RSUs, PVUs, the newly adopted VVOs or any other type of equity award our compensation committee may approve. The annual equity award levels, the types of awards and the proportion of award types are determined by the compensation committee on an annual basis in its discretion based on a number of factors, including, for instance, the status of our named executive officers’ then-outstanding equity awards; market factors and trends; and the goals sought to be achieved with each award. The following examples demonstrate the type of factors the compensation committee may consider in making these determinations:

In determining award types and amounts, the compensation committee may consider a number of factors, including, among others:

The implementation of these equity award guidelines is intended to provide our executives more stable and predictable incentives by granting them awards on an annual basis, while maintaining an appropriate level of discretion by our compensation committee to vary the mix and levels of awards as our business and industry fluctuate and evolve over time. In addition, by splitting annual equity award grants among a mix of different types of awards, these guidelines are also intended to help reduce the effects of equity awards that may have vesting criteria, exercise prices or other conditions that become unattainable or reduce their value over time, in some cases due to factors that may be outside our control, which can cause the awards to deliver inadequate retention value or fail to achieve their long-term incentive purposes, and which can also lead to a large “overhang” of shares subject to outstanding equity awards that are unlikely to vest, settle or be exercised.

2018 Annual Equity Awards

In March 2018, the compensation committee awarded RSUs and stock options to our named executive officers in the amounts set forth in the table below. These awards were granted as annual equity awards under our equity award guidelines for our named executive officers.

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These RSUs are subject to the terms and conditions of the 2016 Plan and a Notice of Grant of Restricted Stock Unit and Restricted Stock Unit Agreement, and vest according to the typical three-year vesting schedule described above. These stock options are subject to the terms and conditions of the 2016 Plan and a Notice of Grant of Stock Option and Stock Option Agreement, have an exercise price of $1.37 per share, and vest according to the typical three-year vesting schedule described above.

2019 Annual Equity Awards

In February 2019, the compensation committee awarded VVOs and stock options to our named executive officers in the amounts set forth in the table below. These awards were granted as annual equity awards under our equity award guidelines for our named executive officers. For 2019, the mix of VVOs and stock options was determined based on the factors described above, with a target proportion of 30% of the total shares subject to each executive’s equity awards being in the form of VVOs and 70% of the total shares subject to each executive’s equity awards being in the form of stock options.

These VVOs are subject to the terms and conditions of the 2016 Plan and a Notice of Grant of Stock Option and Stock Option Agreement, have an exercise price of $2.19 per share, and only vest on each of the first, second and third anniversaries of the date of grant if the applicable Volume Hurdle performance condition is achieved as of each such vesting date. These stock options are subject to the terms and conditions of the 2016 Plan and a Notice of Grant of Stock Option and Stock Option Agreement, have an exercise price of $2.19 per share, and vest according to the typical three-year vesting schedule described above.

Change in Control and Post-Termination Severance Compensation

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

Equity awards granted to our named executive officers before November 2014 accelerate and vest in full upon a change in control. All equity awards granted to our named executive officers after November 2014, however, including the RSUs, stock options and VVOs awarded to our named executive officers in 2018 and 2019 to date, are subject to double-trigger vesting upon a change in control. The compensation committee

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determined to modify the standard vesting provisions of our named executive officers’ equity awards from “single-trigger” to “double-trigger” vesting in connection with a change in control because it believes double-trigger vesting more accurately reflects current market practices but still provides appropriate benefits to executives in the event of a termination in connection with a change in control, and is thus in the best interests of our Company and our stockholders. Further, we have not agreed to make any excise tax “gross-up” payments to our executives in connection with a change in control.

Other Benefits

We appreciate the tremendous value and contributions of our employees, and we believe providing a competitive employee benefits program is one of our most important investments. As a result, we offer an employee benefits program with a wide range of plans designed to promote the health and personal welfare of all employees, including our named executive officers. Participation in these plans is generally available to all of our employees on the same basis.

Employment Agreements

We entered into employment agreements with each of our named executive officers on December 31, 2015. These employment agreements have the following key terms:

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Other Compensation Policies

Executive Stock Ownership Guidelines

We believe it is important to encourage our named executive officers to hold a material amount of our common stock, which links their long-term economic interest directly to that of our stockholders. To achieve this goal, we have established stock ownership guidelines applicable to our named executive officers. These guidelines provide that our Chief Executive Officer is required to own shares of our common stock valued at three times his annual base salary or more, and each of our Chief Financial Officer, Chief Operating Officer, Chief Marketing Officer, Senior Vice President, Strategic Development, and Senior Vice President, Sales and Finance, in each case if any person is appointed in such position, is required to own shares of our common stock valued at one times his annual base salary or more. Such level of ownership must be attained by the later of December 14, 2019 and five years after the date of an executive officer’s initial appointment as such. Stock options are not counted toward satisfaction of these stock ownership requirements. Executives who attain the applicable stock ownership level by the stated deadline will continue to satisfy the stock ownership requirements if the value of their stock holdings declines after such deadline solely due to a decrease in the trading price of our common stock. Each of our named executive officers had satisfied these stock ownership guidelines as of the record date for the Annual Meeting.

Hedging and Pledging of Company Securities

Our policies do not permit any of our executive officers or directors to “hedge” ownership of our securities by engaging in short sales or trading in put options, call options or other derivatives involving our securities. Further, our policies do not permit an executive officer or director to hold our securities in a margin account or pledge our securities as collateral for a loan unless the executive officer or director demonstrates to our satisfaction financial capacity to substitute other assets for Company securities in the event of a failure to meet a margin call or a default on the loan.

As of the date of this Proxy Statement, none of our current directors or executive officers has pledged any of the shares of our common stock he owns.

Clawback Policy

In January 2015, the compensation committee adopted a formal clawback policy regarding recoupment, or a “clawback,” of cash compensation in certain circumstances. The purpose of this clawback policy is to help

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ensure that executives act in the best interests of the Company and our stockholders. The clawback policy requires certain of our officers, including our named executive officers, to repay or return any cash bonus or other incentive cash compensation awarded to or received by such officer(s) in the event we issue a restatement of our financial statements due to material noncompliance with any financial reporting requirements and the restatement was caused by such officer’s fraud, intentional misconduct or gross negligence. In each case, the officer(s) would be required to repay or return the incentive cash compensation awarded to or received by the officer during the 12-month period following the filing of the erroneous financial statement at issue. Pursuant to the clawback policy, in the event of any restatement of our financial statements, the compensation committee would consider a number of factors and exercise its business judgment in determining appropriate amounts, if any, to recoup. Further, the compensation committee retains the discretion to adjust or recover awards or payments if the relevant performance measures on which they are based are restated or are otherwise adjusted in a manner that would reduce the size of the award or payment. The clawback policy applies to cash compensation awarded to our officers from and after the date of its adoption.

Tax and Accounting Effects

In designing our compensation programs, the compensation committee considers the financial impact and tax and accounting effects that each element of compensation will or may have on the Company and our executives. One such area the compensation committee considers is the tax deductibility of each component of executive compensation. Prior to December 22, 2017, when the Tax Cuts and Jobs Act of 2017 (“TCJA”) was signed into law, Section 162(m) generally prohibited us from taking a tax deduction in any tax year for compensation paid to certain executive officers that exceeded $1,000,000, unless the compensation was payable only upon the achievement of pre-established, objective performance goals under a plan approved by our stockholders. As a result, we believe the stock option, RSU and PVU awards we granted to our named executive officers under the 2016 Plan, the 2006 Plan and our other historical equity incentive plans before the impact of the TCJA have qualified as performance-based compensation under Section 162(m), although there is no guarantee that such equity awards, or any other performance-based compensation paid to our named executive officers, qualify as such. Under the TCJA, the exception for performance-based compensation under Section 162(m) has been repealed, so that the $1,000,000 limit on tax deductions in a tax year generally applies to anyone serving as our chief executive officer or our chief financial officer at any time during a taxable year as well as our top three other highest-compensated executive officers serving at fiscal year-end. These changes generally apply beginning in 2018, but generally do not apply to compensation provided pursuant to a binding written contract in effect on November 2, 2017 that is not modified in any material respect after that date. The compensation committee will continue to monitor developments under the TCJA, and will continue to consider steps that might be in our best interests to comply with Section 162(m), including after the impact from the TCJA. It is the compensation committee’s present intention to seek to structure executive compensation so that it will be deductible to the maximum extent permitted by applicable law, which means administering performance-based equity awards that were granted in 2017 or earlier in accordance with Section 162(m), as amended by the TCJA, in order to preserve their tax deductibility to the greatest extent possible; however, the compensation committee reserves the discretion to make any executive compensation decisions that it considers to be in the best interests of our Company and our stockholders, including to award compensation that may not be deductible or to amend existing compensation arrangements in a manner that could limit their deductibility.

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COMPENSATION COMMITTEE REPORT

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

This compensation committee report shall not be deemed to be “soliciting material,” or to be “filed” with the SEC or subject to Regulation 14A or 14C under the Exchange Act, other than as provided by applicable SEC rules, or to the liabilities of Section 18 of the Exchange Act, except to the extent that we specifically request that the information be treated as soliciting material or specifically incorporate it by reference into a document filed under the Securities Act or the Exchange Act. This compensation committee report will not be deemed to be incorporated by reference into any filing under the Securities Act or the Exchange Act, except to the extent that we specifically incorporate it by reference.

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EXECUTIVE COMPENSATION

Summary Compensation Table

The following table summarizes the total compensation awarded to, earned by or paid to each of our named executive officers for 2016, 2017 and 2018:

Total Compensation Actually Paid

Total compensation actually paid to our named executive officers in 2018, 2017 and 2016 is shown in the table below. This table supplements, but is not a substitute for, the Summary Compensation Table that appears immediately above.

The primary difference between this supplemental table and the Summary Compensation Table is the method used to value stock and option awards granted as compensation. SEC rules require that the grant date fair value of all such stock and option awards be reported in the Summary Compensation Table in the year in which such awards are granted. As a result, a portion of the total compensation reported in the Summary Compensation Table relates to stock and option awards that may not have vested and for which the value is therefore uncertain (and which may end up being forfeited and have no value at all). For example, the named executive officers were granted PVUs in 2012 and 2014 that were all forfeited in January 2016 and January 2018, respectively, because the applicable Stock Price Hurdles were not satisfied. See the discussion under “Compensation Discussion and Analysis—Components of Compensation—Equity Incentives” for more information about PVUs.

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In contrast, this supplemental table only includes, for each year:

In reading this supplemental table, it should also be noted that the named executive officers may never realize the value reported in the table for vested stock awards, since the ultimate value of the stock awards will depend on the value of the issued shares when and if they are sold.

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Grants of Plan-Based Awards

The following table summarizes all plan-based awards granted to each of the named executive officers in 2018:

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Outstanding Equity Awards at Fiscal Year End

The following table summarizes outstanding equity awards held by our named executive officers at December 31, 2018:

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Option Exercises and Stock Vested

The following table summarizes exercises of option awards (of which there were none) and vesting of stock awards for each of our named executive officers in 2018:

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Employment Agreements

On December 31, 2015, we entered into an employment agreement with each of our named executive officers. See the description under “Compensation Discussion and Analysis—Employment Agreements” and below under “—Potential Payments Upon Termination or Change in Control” for more information.

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

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

Potential Payments Upon Termination or Change in Control

The narrative and tables below describe the amount of compensation to be paid to our named executive officers in the event of a termination of employment or a change in control. The amount of compensation payable to each of our named executive officers upon a voluntary termination, voluntary termination for good reason, involuntary without cause termination, failure by us to renew the named executive officer’s employment agreement upon its expiration, for-cause termination, change in control of our Company, termination in connection with a change in control and termination due to disability or death is shown in tabular format. Except as otherwise noted, the amounts shown in these tables assume that each such termination or change in control was effective as of December 31, 2018, and thus are estimates of the amounts that would be paid to our named executive officers upon an actual termination or change in control because such amounts could only be determined at the time of such an actual termination or change in control. The amounts shown in these tables are based on the terms of each named executive officer’s employment agreement with us and the terms of agreements relating to each named executive officer’s outstanding equity awards.

Severance Compensation under Employment Agreements

Pursuant to the terms of the employment agreement for each named executive officer:

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In consideration of the receipt of any of the severance compensation described above and as a precondition to their receipt, each named executive officer would be required to execute and deliver, and not revoke, a release in favor of us in the form attached to his employment agreement. For purposes of the tables below, we have assumed that the amounts described in (1)(A) and (B) above have already been paid to the applicable named executive officer or are $0.

For purposes of each such named executive officer’s employment agreement:

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