Proxy Statement (Form DEF 14A)

SEACOR Marine Holdings Inc.

12121 Wickchester Lane

Suite 500

Houston, TX 77079

Notice of 2026 Annual Meeting

And

Proxy Statement

SEACOR Marine Holdings Inc.

12121 Wickchester Lane

Suite 500

Houston, TX 77079

April 16, 2026

Dear Stockholder:

You are cordially invited to attend the 2026 Annual Meeting of Stockholders (the "Annual Meeting") of SEACOR Marine Holdings Inc. (the "Company") on Tuesday, June 2, 2026, at 9:00 a.m. (EDT). The Annual Meeting will be a completely "virtual meeting," held via a live audio webcast. Stockholders may access the meeting by visiting www.proxydocs.com/SMHI and entering the 16-digit control number, located on your proxy card. As the Annual Meeting will begin promptly at 9:00 a.m. (EDT), we encourage you to access the meeting prior to the start time.

All holders of record of the Company's outstanding Common Stock at the close of business on April 13, 2026, will be entitled to vote at the Annual Meeting. Your virtual attendance at the 2026 Annual Meeting affords you the same rights and opportunities to participate as you would have at an in-person annual meeting, including the ability to vote and submit questions electronically prior to and during the meeting. We believe the virtual Annual Meeting format will enhance stockholder access and encourage participation and communication with our Board of Directors and management.

Directors, officers and other representatives of the Company are expected to be available at the virtual Annual Meeting, and they will be pleased to answer any questions you may have.

Whether or not you expect to attend the Annual Meeting and regardless of the number of shares of the Company's Common Stock you own, you are encouraged to carefully read the enclosed Proxy Statement and the Company's Annual Report to Stockholders on Form 10-K for the fiscal year ended December 31, 2025 (the "2025 Annual Report"). You may vote your shares over the Internet at www.proxypush.com/SMHI or via the toll-free telephone number included herein. If you received a paper copy of a proxy or voting instruction card by mail, you may instead submit your proxy or voting instruction card for the Annual Meeting by completing, signing, dating and returning your proxy or voting instruction card in the pre-addressed envelope provided. Submitting a vote before the Annual Meeting will not preclude you from voting your shares at the virtual Annual Meeting should you decide to join the webcast.

We hope that you will be able to attend the virtual Annual Meeting.

For the Board of Directors,

Andrew R. Morse

Non-Executive Chairman of the Board

SEACOR Marine Holdings Inc.

12121 Wickchester Lane

Suite 500

Houston, TX 77079

April 16, 2026

To Our Stockholders:

The 2026 Annual Meeting of Stockholders (the "Annual Meeting") of SEACOR Marine Holdings Inc. (the "Company") will be held on Tuesday, June 2, 2026, at 9:00 a.m. (EDT), exclusively online via a live audio webcast at www.proxydocs.com/SMHI, for the following purposes:

Only holders of record of the Company's Common Stock at the close of business on April 13, 2026, will be entitled to notice of and to vote at the virtual Annual Meeting. See the "Solicitation of Proxies, Voting and Revocation" section of the accompanying Proxy Statement for the place where the list of stockholders may be examined. The accompanying Proxy Statement is being first sent to stockholders on or about April 27, 2026.

Your vote is very important! Whether or not you plan to attend the virtual Annual Meeting, you are encouraged to read the enclosed Proxy Statement and 2025 Annual Report carefully and submit your proxy or voting instructions promptly so that your shares of the Company's Common Stock may be represented at the Annual Meeting. You may vote your shares over the Internet at www.proxypush.com/SMHI, by phoning the toll-free telephone number on the voting instruction card, or by completing, signing, dating and returning the enclosed proxy card. If you attend the virtual Annual Meeting by webcast, you may revoke your proxy and vote your shares electronically at the virtual meeting. See the "Attending the Annual Meeting Virtually" and "Voting and Quorum" sections of the accompanying Proxy Statement for additional instructions and information on voting.

For the Board of Directors,

Andrew H. Everett II

Senior Vice President,

General Counsel and Secretary

TABLE OF CONTENTS

SEACOR Marine Holdings Inc.

12121 Wickchester Lane

Suite 500

Houston, TX 77079

Notice of 2026 Annual Meeting

And

Proxy Statement

SOLICITATION OF PROXIES, VOTING AND REVOCATION

Voting and Quorum

A list of the Company's stockholders as of the close of business on April 13, 2026 (the "Record Date") will be available for examination by any stockholder, for purposes germane to the virtual Annual Meeting, during ordinary business hours for the ten-day period prior to the date of the Annual Meeting, at the offices of the Company, 12121 Wickchester Lane, Suite 500, Houston, Texas 77079.

Only record holders of our common stock, $0.01 par value per share ("Common Stock"), as of the Record Date will be entitled to vote at the Annual Meeting. Our authorized capital stock currently consists of 60,000,000 shares of Common Stock. At the close of business on the Record Date, there were 27,062,277 shares of Common Stock outstanding and entitled to vote. Each stockholder of record is entitled to one vote for each share held on the Record Date on all matters that may properly come before the Annual Meeting. There are no dissenter or appraisal rights relating to the matters to be acted upon at the Annual Meeting.

Stockholders are requested to vote in one of the following ways:

We recommend that you vote by phone, Internet, or proxy even if you plan to virtually attend the Annual Meeting.

Shares of Common Stock represented by properly executed proxy cards or voted by telephone or Internet that are received by the Company and not subsequently revoked will be voted at the Annual Meeting in accordance with the instructions contained therein or if no instructions are contained in the proxy, as described in the "Proxy Cards" section of this Proxy Statement.

A quorum for the transaction of business at the Annual Meeting requires the holders of record of a majority in voting power of the then issued and outstanding shares of all classes and series of stock of the Company entitled to vote at the meeting, in person or by proxy.

For Proposal 1 (Election of Directors), election of the director nominees to the board of directors of the Company (the "Board") requires a plurality of the votes cast, which means that the six nominees receiving the most "for" votes will be elected. Because there are only six director nominees named in this Proxy Statement, votes withheld from any nominee will have no effect on the outcome of the election of directors. Votes may not be cast "against" the election of a nominee. Abstentions and "broker non-votes" (as described in the "Shares Held in Street Name" section of this Proxy Statement) will not affect the outcome of such election. Our stockholders do not have cumulative voting rights for the election of directors.

Matters to be considered at the meeting other than the election of directors require the vote of the holders of a majority of the shares entitled to vote and present at the meeting in person or by proxy.

For Proposal 2 (Say on Pay) and Proposal 3 (Ratification of the Appointment of Independent Registered Public Accounting Firm), stockholders may vote in favor of or against the proposal or may abstain from voting.

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Because abstentions are treated as both "present" and "entitled to vote" on a matter, abstaining has the same effect as a vote "against" the proposal. For a discussion of the treatment of "broker non-votes," see the "Shares Held in Street Name" section of this Proxy Statement.

Because your vote on Proposal 2 (Say on Pay) is advisory in nature, the results will not be binding on the Company, the Board, or the Compensation Committee. However, the Board and the Compensation Committee will review and consider the voting results when making future decisions regarding executive compensation.

The table below summarizes the voting requirements to elect directors and to approve each of the other proposals in the Proxy Statement.

Shares Held in Street Name

If you hold your shares in "street name" as of the close of business on the Record Date, you may vote by following the instructions in the voting instruction card provided by your broker, bank or other nominee. Note that the deadline for voting through your broker, bank or other nominee will not necessarily correspond to the voting deadline for proxyholders. You may not vote your shares electronically at the Annual Meeting unless you receive a valid proxy from your brokerage firm, bank, broker dealer or other nominee holder. If you wish to attend the meeting virtually, you may gain access to the meeting by following the instructions in the voting instruction card provided by your broker, bank or other nominee.

A "broker non-vote" occurs when a nominee holding shares for a beneficial owner does not vote on a particular proposal because the nominee does not have discretionary voting power with respect to that item and has not received instructions from the beneficial owner. On routine matters, brokers have the discretion to vote shares held in "street name" - a term that means the shares are held in the name of the broker on behalf of its customer, the beneficial owner. If your shares are held in "street name" by a broker and you wish to vote on the proposal to elect the directors (Proposal 1), the advisory vote to approve Named Executive Officer compensation (Proposal 2), or to act upon any other non-routine business that may properly come before the Annual Meeting, you should provide instructions to your broker. Under the rules of the New York Stock Exchange (the "NYSE"), if you do not provide your broker with instructions, your broker generally will only have the authority to vote on the ratification of the appointment of Grant Thornton LLP, as the Company's independent registered public accounting firm (Proposal 3). All other matters at the Annual Meeting are expected to be non-routine and therefore brokers will not be entitled to vote on a beneficial owner's behalf without voting instructions or discretionary authority on such matters. Because broker non-votes are outstanding shares that are not entitled to vote on non-routine matters, they will have no effect on the outcome of Proposal 2 and, as noted above, will also have no effect on the outcome of Proposal 1.

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Proxy Cards

If you sign and return your proxy card but do not specify how your shares of Common Stock are to be voted, they will be voted: FOR election as a director of each of the nominees named under "Proposal No. 1 - Election of Directors" in this Proxy Statement and listed under Item 1 of the enclosed proxy card; FOR "Proposal No. 2 - Advisory Vote to Approve Named Executive Officer Compensation" in this Proxy Statement and listed under Item 2 of the enclosed proxy card; and FOR "Proposal No. 3 - Ratification of the Appointment of Independent Registered Public Accounting Firm" in this Proxy Statement and listed under Item 3 of the enclosed proxy card. If other matters are properly presented at the Annual Meeting for consideration, the persons named in the proxy will have the discretion to vote on those matters for the stockholder.

As a matter of policy, proxy cards, ballots and voting tabulations that identify individual stockholders are kept confidential by the Company. Such documents are made available only to the inspector of election and personnel associated with processing proxies and tabulating votes at the Annual Meeting. The votes of individual stockholders will not be disclosed except as may be required by applicable law.

Attending the Annual Meeting Virtually

The Annual Meeting will be a completely virtual meeting of stockholders conducted exclusively by a live audio webcast. Only record or beneficial owners of Common Stock as of the Record Date may attend the Annual Meeting, vote their shares and submit online questions.

In order to attend the Annual Meeting, you must register at www.proxydocs.com/SMHI. Upon completing your registration, you will receive further instructions via email, including a unique link that will allow you access to the Annual Meeting and to vote and submit questions during the Annual Meeting. As part of the registration process, you must enter the control number located on your proxy card, or voting instruction card. If you are a beneficial owner of shares registered in the name of a broker, bank or other nominee, you will also need to provide the registered name on your account and the name of your broker, bank or other nominee as part of the registration process.

The Annual Meeting will begin promptly at 9:00 a.m. (EDT), with online check-in beginning at 8:45 a.m. (EDT). Stockholders must use the unique link emailed to them upon completing their registration to access the Annual Meeting.

If you wish to submit a question for the Annual Meeting, you may do so in advance of the meeting at www.proxydocs.com/SMHI or at any point during the Annual Meeting (until the floor is closed to questions).

Revocation of Proxies

A stockholder who so desires may revoke his, her, or its proxy at any time before it is exercised at the Annual Meeting by: (i) providing written notice to the Secretary of the Company; (ii) duly executing a proxy card bearing a date subsequent to that of a previously furnished proxy card; (iii) entering new instructions by Internet or telephone; or (iv) attending the webcast of the Annual Meeting and voting virtually. Attendance at the Annual Meeting will not in itself constitute a revocation of a previously furnished proxy. Stockholders who attend the Annual Meeting need not revoke their proxy (if previously furnished) to vote virtually at the meeting. The Company encourages stockholders that plan to join the Annual Meeting to vote by phone or Internet or to submit a valid proxy card and vote their shares prior to the Annual Meeting. Even after you have voted electronically through the Internet or by telephone or submitted your proxy card, you may change your vote at any time before the proxy is exercised at the Annual Meeting by joining the webcast (see the "Attending the Annual Meeting Virtually" section of this Proxy Statement). If you hold your shares in "street name" and want to revoke your proxy, you will need to follow the instructions of your broker to revoke or change your previous vote (see the "Shares Held in Street Name" section of this Proxy Statement).

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Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting to be Held on June 2, 2026

This Proxy Statement and the enclosed proxy card, the Notice of Annual Meeting, and the Company's 2025 Annual Report are available on the Internet at https://ir.seacormarine.com/financial-information/annual-reports-and-proxy-statements.

Solicitation Expenses

The Company will bear the costs of solicitation of proxies for the Annual Meeting. In addition to solicitation by mail, directors, officers and employees of the Company may solicit proxies from stockholders by telephone, electronic or facsimile transmission, personal interview or other means.

The Company has requested brokers, bankers and other nominees who hold voting stock of the Company to forward proxy solicitation materials to their customers and such nominees will be reimbursed for their reasonable out-of-pocket expenses.

We have retained D.F. King & Co., Inc. to aid in the solicitation of proxies. The fees of D.F. King & Co., Inc. are $10,000 plus reimbursement of its reasonable out-of-pocket costs. If you have questions about the Annual Meeting or need additional copies of this Proxy Statement or additional proxy cards, please contact our proxy solicitation agent as follows:

D.F. King & Co., Inc.

28 Liberty Street, 53^rd Floor

New York, NY 10005

Banks and Brokerage Firms, please call (646) 989-1598

Stockholders, please call (866) 745-0267

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CORPORATE GOVERNANCE

Board Leadership Structure

The Board believes that there is no single organizational model that would be most effective in all circumstances and that it is in the best interests of the Company and its stockholders for the Board to retain the authority to modify its leadership structure to best address the Company's circumstances from time to time.

The Board believes that the most effective leadership structure for the Company at the present time is to maintain the separate positions of Non-Executive Chairman and Chief Executive Officer. Separating these positions allows the Chief Executive Officer to focus on the full-time job of running the Company's business, while allowing the Non-Executive Chairman to lead the Board in its fundamental role of providing advice to and independent oversight of management. The Board believes this structure recognizes the time, effort, and energy that the Chief Executive Officer is required to devote to his position in the current business environment, as well as the commitment required to serve as the Company's Non-Executive Chairman, particularly as the Board's oversight responsibilities, especially risk oversight, continue to grow and demand more time and attention. The Board also believes that separating the Non-Executive Chairman and Chief Executive Officer positions provides enhanced independent leadership and oversight for the Company, management and the Board.

In addition to the role that the Non-Executive Chairman has with regard to the Board, the chair of each of the three independent key committees of the Board (Audit Committee, Compensation Committee and Nominating and Corporate Governance Committee) and each individual director is responsible for helping ensure that meeting agendas are appropriate and that sufficient time and information are available to address issues that the directors believe are significant and warrant their attention. Each director has the opportunity and ability to request agenda items, information, and additional meetings of the Board or of the independent directors.

The Board has adopted significant processes designed to support the Board's capacity for objective judgment, including executive sessions of the independent directors at Board meetings at which no employees are present, independent evaluation of, and communication with, members of senior management, and rigorous self-evaluation of the Board, its committees, and its leadership. These and other critical governance processes are reflected in the Corporate Governance Guidelines and the various Committee Charters that are available on the Company's website at www.seacormarine.com by navigating to "Investors," and clicking "Corporate Governance." The Company's website and the information contained therein or connected thereto shall not be deemed to be incorporated into this Proxy Statement. The Board has also provided mechanisms for stockholders to communicate in writing with the Non-Executive Chairman of the Board, with the non-management and/or independent directors, and with the full Board on matters of significance. These processes are outlined in the "Communications with the Board or Independent Directors" section of this Proxy Statement.

Board of Directors and Director Independence

The business and affairs of the Company are managed under the direction of the Board. The Company's Third Amended and Restated By-Laws (the "By-Laws") provide that the Board will consist of not less than five and not more than twelve directors. In 2025, the Board consisted of six (6) directors and there were no changes to the Board in 2025 or thus far in 2026.

During 2025, the Board held ten meetings. The Board also acted pursuant to unanimous written consent on four other occasions. Each of the current directors attended at least 75% of the combined total meetings of the full Board and the committees on which they served during 2025. Although the Company does not have a formal policy governing director attendance at the annual meeting of stockholders, attendance is strongly encouraged and each member of our Board attended the Company's 2025 annual meeting of stockholders. All members of our Board plan to virtually attend the Annual Meeting.

Our Board consults with legal counsel to ensure that the Board's independence determinations are consistent with all relevant securities and other laws and regulations regarding director independence,

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including the requirements of the New York Stock Exchange. To assist in the Board's independence determinations, each director completed materials designed to identify any relationships that could affect the director's independence. In addition, through discussions among our directors, a subjective analysis of independence is undertaken by the Nominating and Corporate Governance Committee. Our Board is currently composed of a majority of independent directors, with the Board having made the affirmative determination that each of Mr. Andrew R. Morse, Ms. Julie Persily, Mr. R. Christopher Regan, and Ms. Lisa P. Young, is independent as such term is defined by the applicable rules and regulations of the NYSE. Additionally, each of these directors meets the categorical standards for independence established by the Board (the "SEACOR Marine Categorical Standards"). A copy of the SEACOR Marine Categorical Standards is available on the Company's website at www.seacormarine.com by navigating to "Investors," and clicking "Corporate Governance" (entitled "Director Independence Standards").

The schedule of Board meetings is made available to directors in advance along with the agenda for each meeting so that they may review and request changes. Directors also have unrestricted access to management at all times and regularly communicate informally with management on an assortment of topics. The Company's Chief Executive Officer hosts a monthly conference call with the directors and other senior management to discuss recent business developments and other matters.

Executive Sessions

Directors meet at regularly scheduled executive sessions without any members of management present to discuss issues relating to management performance and any other issue that may involve a potential conflict of interest with management. Executive sessions are generally presided over by the Company's Non-Executive Chairman, Mr. Morse, who is responsible for:

Committees of the Board of Directors

The Board has established the following committees, each of which operates under a written charter that is available on the Company's website at www.seacormarine.com by navigating to "Investors," and clicking "Corporate Governance."

Audit Committee

The Audit Committee is composed of four members: Ms. Young, Mr. Morse, Ms. Persily, and Mr. Regan. Ms. Young, Mr. Morse, Ms. Persily, and Mr. Regan have all served on the Audit Committee since the last annual meeting of stockholders and continue to do so. Ms. Young is the chair of the Audit Committee. The Board has determined that Mr. Morse and Ms. Young are each an "audit committee financial expert" for purposes of the rules of the United States ("U.S.") Securities and Exchange Commission ("SEC") and NYSE. In reaching this determination, the Board considered, among other things, Mr. Morse's experience as an

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investment banker for over 25 years, and Ms. Young's experience in public accounting and professional services for over 36 years, in addition to their other experience that is described elsewhere in this Proxy Statement. In addition, the Board determined that each member of the Audit Committee is financially literate, as required under the NYSE standards, and is considered independent, as defined by the rules of the NYSE applicable to Audit Committee members, Section 10A(m)(3) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), and in accordance with the SEACOR Marine Categorical Standards. In accordance with the NYSE Listed Company Manual Rule 303A.07, which stipulates that if an audit committee member simultaneously serves on the audit committees of more than three public companies, the Board must determine whether such simultaneous service would not impair the ability of such member to effectively serve on the Audit Committee. Ms. Persily currently serves on a total of four public company audit committees including the Audit Committee of the Company. The Board has determined that the simultaneous service on four public company audit committees by Ms. Persily does not impair her ability to effectively serve on the Audit Committee. The Audit Committee is expected to meet at least quarterly. The Audit Committee met four times during 2025 and acted pursuant to unanimous written consent on one other occasion.

Committee Function. The Audit Committee assists the Board in fulfilling its responsibility to oversee, among other things:

The Audit Committee's role is one of oversight. Management is responsible for preparing the Company's financial statements and the independent registered public accounting firm is responsible for auditing those financial statements. Management has more time, knowledge and detailed information about the Company than the Audit Committee members. Consequently, in carrying out its oversight responsibilities, the Audit Committee will not provide any expert or special assurance as to the Company's financial statements or any professional certification as to the independent registered public accounting firm's work.

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Compensation Committee

The Compensation Committee is composed of four members: Mr. Regan, Mr. Morse, Ms. Persily, and Ms. Young. Mr. Regan, Mr. Morse, Ms. Persily, and Ms. Young have all served since the last annual meeting of stockholders and continue to serve on the Compensation Committee. Mr. Regan is the chair of the Compensation Committee. The Board has determined that each member of the Compensation Committee is independent, as defined by the rules of the NYSE applicable to Compensation Committee members and in accordance with the SEACOR Marine Categorical Standards. The Compensation Committee met four times during 2025 and acted pursuant to unanimous written consent on two other occasions.

Committee Function. Pursuant to its charter, the Compensation Committee is primarily responsible for, among other things:

The Chairman of the Compensation Committee sets the agenda for the meetings of the Compensation Committee with the input from the Company's executive management. Members of executive management may also attend meetings, if requested. At each meeting, the Compensation Committee has the opportunity to meet in executive session. When the Compensation Committee acts without the approval of the full Board, the Chairman of the Compensation Committee reports the Compensation Committee's actions regarding compensation to the full Board. The Compensation Committee has the sole authority to retain, obtain the advice of, and terminate, any compensation consultants, independent legal counsel or other advisors to assist the Compensation Committee in its discharge of its duties and responsibilities, including the evaluation of director or executive officer compensation.

Compensation Committee Interlocks and Insider Participation. None of the current members of the Compensation Committee is or ever was an officer or employee of the Company. During 2025, none of the Company's executive officers served as a director or member of the compensation committee of any other entity whose executive officers serve on the Board or the Compensation Committee.

Nominating and Corporate Governance Committee

The Nominating and Corporate Governance Committee is composed of four members: Mr. Regan, Mr. Morse, Ms. Persily, and Ms. Young. Mr. Regan, Mr. Morse, Ms. Persily, and Ms. Young have all served since the last annual meeting of stockholders and continue to serve on the Nominating and Corporate Governance Committee. Mr. Regan is the chair of the Nominating and Corporate Governance Committee. The Board has determined that each member of the Nominating and Corporate Governance Committee is independent, as defined by the rules of the NYSE and in accordance with the SEACOR Marine Categorical Standards. The Nominating and Corporate Governance Committee met four times during 2025.

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Committee Function. The Nominating and Corporate Governance Committee assists the Board with:

Selection of Nominees for the Board of Directors. To fulfill its responsibility to recruit and recommend to the full Board nominees for election as directors, the Nominating and Corporate Governance Committee reviews the composition of the full Board at least annually to determine the qualifications and areas of expertise needed to further enhance the composition of the Board and works with management in attracting candidates with those qualifications.

In identifying new director candidates, the Nominating and Corporate Governance Committee seeks advice and names of candidates from Nominating and Corporate Governance Committee members, other members of the Board, members of management and other public and private sources. The Nominating and Corporate Governance Committee, in formulating its recommendation of candidates to the Board, considers each candidate's personal qualifications and how such personal qualifications effectively address the then-perceived current needs of the Board. The minimum qualifications and criteria for membership on the Board include the following:

The Nominating and Corporate Governance Committee also considers the diversity of the Board and potential candidates as to business and life experiences as well as educational and professional backgrounds in recruiting and recommending candidates for election.

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After the Nominating and Corporate Governance Committee completes its evaluation, it presents its recommendations to the Board for consideration and approval. The Nominating and Corporate Governance Committee has the power to retain outside counsel, director search and recruitment consultants or other experts and will receive from the Company adequate funding, as determined by the Nominating and Corporate Governance Committee, for payment of reasonable compensation to such advisors.

Having evaluated the Board candidates set forth under Proposal No. 1 pursuant to these processes and criteria, the Nominating and Corporate Governance Committee recommended, and the Board determined to nominate, each of the persons named in the "Standing Director Nominees" section of this Proxy Statement for election.

Stockholder Recommendations. The Nominating and Corporate Governance Committee will consider director candidates suggested by the Company's stockholders provided that the recommendations are made in accordance with the same procedures required under the By-Laws for nomination of directors by stockholders. For instance, stockholder nominations must comply with the notice provisions described under the "Stockholder Proposals for the 2027 Annual Meeting" section of this Proxy Statement. Stockholder nominations that comply with these procedures and that meet the criteria outlined therein will receive the same consideration that the Nominating and Corporate Governance Committee's nominees receive. There have been no changes to these procedures over the last fiscal year. The Company will report any material change to this procedure in an appropriate filing with the SEC and will make any such changes available promptly on the "SEC Filings" section of the Company's website at www.seacormarine.com.

Communications with the Board or Independent Directors

Stockholders or interested parties who wish to communicate with the Board, the Non-Executive Chairman and/or independent directors, may do so by writing in care of the Company's Corporate Secretary, indicating by title or name to whom correspondence should be directed. Correspondence should be sent to SEACOR Marine Holdings Inc., Attn: Corporate Secretary, 12121 Wickchester Lane, Suite 500, Houston, Texas 77079 or by email to [email protected]. The independent directors have established procedures for handling communications from stockholders of the Company and directed the Corporate Secretary to act as their agent in processing any communications received. All communications that relate to matters that are within the scope of the responsibilities of the Board and its committees will be forwarded to the Non-Executive Chairman and independent directors. Communications that relate to matters that are within the responsibility of one of the Board committees will be forwarded to the chair of the appropriate committee. Communications that relate to ordinary business matters that are not within the scope of the Board's responsibilities will be sent to the appropriate executive. Solicitations, junk mail and obviously frivolous or inappropriate communications will not be forwarded, but will be made available to any director who wishes to review them.

The Audit Committee has established procedures for (i) the receipt, retention, and treatment of complaints, reports and concerns regarding accounting, internal accounting controls, or auditing matters, and (ii) the confidential, anonymous submission of complaints, reports and concerns by employees regarding questionable accounting or auditing matters. These procedures are available on the Company's website, at www.seacormarine.com by navigating to "Investors," and clicking "Corporate Governance" (entitled "Procedures for Addressing Complaints"). Such complaints, reports or concerns may be communicated to the Company's General Counsel or the Chairman of the Audit Committee through a toll-free hotline at +1 (844) 359-7729 or through an internet based reporting tool provided by NAVEX Global (www.seacormarine.ethicspoint.com), each of which ensures that the communications are made on an anonymous and confidential basis. Complaints received are logged by the General Counsel, communicated to the Chairman of the Audit Committee and then investigated by the General Counsel under the supervision of the Audit Committee, unless the Audit Committee determines a different approach is required. These procedures permit the retention of counsel, accountants and consultants to help with such investigations. In accordance with Section 806 of the Sarbanes-Oxley Act of 2002, as amended (the "Sarbanes-Oxley Act"), these procedures prohibit the Company from retaliating against any person who, in good faith, submits an accounting or auditing complaint, report or concern or provides assistance in the investigation or resolution of such matters.

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Risk Oversight

The Company's business, financial condition, results of operations, cash flows and prospects can be adversely affected by risk. The management of risk is central to the success of the Company and requires the involvement of the Board, officers, employees, and internal and independent auditors, all of whom are entrusted to develop a balanced and prudent approach to risk.

The Company has developed and implemented operational controls designed to identify and mitigate risk associated with its financial decisions, operations, legal compliance, business development, changing business conditions, executive compensation, ESG initiatives, cybersecurity and information technology systems. The Chief Executive Officer, with the assistance of the Chief Financial Officer, Chief Accounting Officer, General Counsel, Executive Vice Presidents, Senior Vice Presidents, other key officers and external legal counsel, is responsible for, among other risk management measures:

The Board has reviewed and evaluated, and expects to routinely review and evaluate, the Company's risk profile to ensure that the measures implemented by the Company are adequate to execute and implement the Company's strategic objectives. Issues related to risk are regularly discussed by the Chief Executive Officer and the rest of the senior management team with members of the Board both through informal communications, such as email, telephone conference and in-person meetings, and during formal Board meetings. Senior management makes formal presentations to the Board regarding risk management issues at least once per year. Our Non-Executive Chairman and certain other Board members are intimately familiar with the risks associated with the types of assets managed and owned by the Company and routinely engage in dialogue with the Chief Executive Officer and appropriate members of senior management regarding such risks. In addition, when the Board reviews particular transactions and initiatives that require Board approval, or that otherwise merit Board involvement, the Board generally includes related risk analysis and mitigation plans among the matters addressed with management. The Board also oversees cybersecurity risks. See the "Cybersecurity Risk Management" section of this Proxy Statement and Item 1C. Cybersecurity in our Annual Report on Form 10-K for additional information regarding the Company's cybersecurity risk management program.

The Audit Committee, together with senior management, works to respond to recommendations from internal and external auditors and supervisory authorities regarding the Company's compliance with internal controls and disclosure controls and procedures, and other factors that could interfere with the Company's reporting obligations, as well as the successful implementation of the Company's strategic plan. The Audit Committee also reviews the adequacy of the Company's risk management policies and procedures and meets privately with Company employees and the General Counsel to consider recommendations regarding policies related to risk management. In addition, senior management works closely with the General Counsel to facilitate compliance with foreign and domestic laws and regulations. The General Counsel also reports to the Board on Company programs and initiatives that educate employees on these laws, regulations and any updates thereto, and facilitates the Company's compliance therewith.

The Compensation Committee oversees the Company's compensation programs and oversees and evaluates risks relating to its compensation programs and human capital management more generally. The General Counsel keeps the Compensation Committee updated on matters relating to retention of key employees, employee satisfaction and related matters.

The Nominating and Corporate Governance Committee oversees the Company's ESG program and sustainability initiatives, including the Company's Sustainability Council. See the "ESG and Sustainability Council" section of this Proxy Statement for additional information regarding the Company's sustainability initiatives, including the publication of the Sustainability Council's Sustainability Reports.

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initiatives on all matters related to sustainability, including, but not limited to environmental protection, clean energy technology, social responsibility, employee, lender, contractor and community engagement, health and safety, and community empowerment. Together with the Board, the Sustainability Council helps establish sustainability goals and integrate them into strategic and tactical business activities across the Company to contribute to risk management and long-term value for all stakeholders.

The Company periodically publishes a Sustainability Report, offering in-depth insights into the Company's sustainability efforts and ESG practices. Additionally, the Company's website features a dedicated section specifically focusing on its ESG efforts and its sustainable and responsible business practices.

Environmental Sustainability: Our Company is continually adapting its business to adjust to the changing regulatory and commercial landscape and has increased its focus on reducing fuel consumption and carbon emissions, supporting alternative energy sources and using new technologies to increase the sustainability of our operations and reduce environmental impacts. We are leveraging technology to move the sector forward towards more environmentally friendly processes, leaning into hybrid power solutions and other technologies. We are a pioneer in the use of hybrid power technology, a solution that reduces fuel consumption and emissions by up to 20%, and as of December 31, 2025, we have equipped nine of our 18 owned platform supply vessels ("PSVs") with hybrid battery power systems ("Hybrid PSVs"). The Company has also acquired two additional hybrid battery power systems that may be installed on two PSVs. In November 2024, we also signed an order for two newbuild PSVs, equipped with integrated hybrid power, with expected delivery in the fourth quarter of 2026 and the first quarter of 2027, respectively. As an industry leader, we are encouraged by the International Maritime Organization's ("IMO") strategy on the reduction of greenhouse gases ("GHG") in international shipping and lowering emissions overall. We continue to evaluate and improve our operational efficiencies across our organization, reduce our fuel consumption and carbon intensity, and ensure compliance with emissions-related regulatory demands.

We are also committed to improving ocean health through pollution prevention and ballast water management and are reducing the amount of waste produced by our operations to minimize our environmental impact. Our vessels are in full compliance with all laws and regulations with respect to oil spill prevention and are fully compliant with the current IMO Ballast Water Management Convention. We have been focused on, and continue to explore, initiatives to reduce waste both in our shoreside operations and on board our vessels, including initiatives related to reducing water consumption, plastic waste, lubricant waste, cleaning product waste, office and paper waste, food waste and vessel recycling. These initiatives span our entire business.

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PROPOSAL NO. 1 ELECTION OF DIRECTORS

The Board has nominated the people listed below for election as directors, each to serve until the next annual meeting of stockholders or until his or her successor is duly elected and qualified. Although not anticipated, if any of the nominees becomes unavailable for any reason, the Board in its discretion may designate a substitute nominee. If a stockholder has filled out the accompanying proxy card, that stockholder's vote will be cast for the substitute nominee.

The following table sets forth information with respect to each nominee for election as a director as of the date of this Proxy Statement:

Standing Director Nominees

Andrew R. Morse has been a member of the Board since his appointment in May 2017 and has served as Non-Executive Chairman of the Board since June 2021. Mr. Morse served on the SEACOR Holdings board of directors from June 1998 to May 2017. Mr. Morse has been a managing director and senior portfolio manager of Morse, Towey and White, a wealth management unit of High Tower Advisors Inc., a Chicago-based firm of investment advisors since July 31, 2010. In addition, Mr. Morse served on the board of directors and on the audit committee of High Tower Advisors Inc. from July 31, 2010, until January 2018. Mr. Morse was a managing director and senior portfolio manager of UBS Financial Services, Inc., from October 2001 until July 2010. Mr. Morse was senior vice president-investments of Salomon Smith Barney Inc. of New York, an investment banking firm, and Smith Barney Inc., its predecessor, from March 1993 to October 2001. Mr. Morse sits on numerous philanthropic boards and is treasurer of the American Committee of the Weizmann Institute of Science. Mr. Morse served as a director of Seabulk International, Inc., both before and following its merger with SEACOR Holdings in July 2005 until March 2006. In December 2015, Mr. Morse became a member of the board of managers of KGP Realty, a private residential property management company.

We believe that Mr. Morse's deep experience in wealth management and corporate finance provides a valuable resource to the Board, the Audit Committee, the Compensation Committee and the Nominating and Corporate Governance Committee. Mr. Morse's finance experience through advising high net worth individuals and investment entities adds a valuable perspective to the Board. In addition, foreign governments have sought his experience on international corporate finance with respect to issues such as complex energy crisis management and other significant matters of public policy related to our business.

John Gellert has served as the Company's President and Chief Executive Officer and as a member of the Board since June 1, 2017. Prior to the spin-off of the Company from SEACOR Holdings on June 1, 2017 (the "Spin-off"), Mr. Gellert served as the co-chief operating officer of SEACOR Holdings since February 23, 2015, and president of SEACOR Holdings' Offshore Marine Services segment since July 2005. Mr. Gellert also held various financial, analytical, chartering and marketing roles with SEACOR Holdings since June 1992. Mr. Gellert is an officer and director of certain Company subsidiaries. Mr. Gellert serves as a member

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of the executive committee of International Support Vessel Owners Association, a member of the board of directors of Offshore Marine Service Association, a member of the executive council at Cohesive Capital Management, L.P., and previously served as president of the National Ocean Industries Association. Mr. Gellert graduated from Harvard College.

We believe that as the Company's Chief Executive Officer, Mr. Gellert provides valuable insight to the Board on the Company's day-to-day operations. In addition, Mr. Gellert's long tenure with the Company allows him to provide valuable insight to the Board about the competitive dynamics of our industry.

Alfredo Miguel Bejos has been a member of the Board since June 11, 2019. Mr. Miguel has been president and chief executive officer of Proyectos Globales de Energía y Servicios CME, S.A. de C.V. ("CME") since 2012 and executive president of Helicópteros Bell de México, S. de R.L. de C.V. since 2009. Mr. Miguel has extensive finance experience having held various positions in the finance area of Banco Santander Mexico from 2000 until 2002. Mr. Miguel has served as an independent member of several boards of directors, including current memberships on the boards of the airline Volaris and Pure Leasing, positions which he has held since 2006. Mr. Miguel is also a member of the Customer Advisory Panel at Bell Helicopter, a leading company in helicopter manufacturing. Mr. Miguel holds a BA from Universidad Iberoamericana.

We believe that Mr. Miguel's industry experience, specifically his extensive experience in the maritime aspects of the international energy and infrastructure sector, as well as his broad knowledge gained from serving on multiple boards of directors in the transportation industry will add a diverse perspective to the Board.

Julie Persily has been a member of the Board since her appointment in April 2018. Since 2013, Ms. Persily has served on the board of directors of Investcorp Credit Management BDC, Inc., a NASDAQ listed business development company that invests in middle market companies, and as a member of its audit and nominating committees and as chair of its compensation and valuation committees. Since 2017, Ms. Persily has served on the board of directors of Runway Growth Finance Corp., a NASDAQ listed business development company that provides secured loans to early-stage growth and venture-backed companies in the U.S., and as chair of its audit committee and a member of its nominating and corporate governance committee and compensation committee until January 2025, and currently serves as a member of its audit committee. Since 2023, Ms. Persily has served on the board of directors of StepStone Private Credit Fund LLC, a non-exchange traded business development company that invests in various credit-related strategies, and as a member of its audit and nominating and corporate governance committees. Ms. Persily has a deep breadth of experience in the finance and capital market industries, having held various roles at Citigroup for nearly 10 years, including serving as the co-head of Citigroup's leveraged finance group for over two years and head of acquisition finance prior thereto. Ms. Persily also formerly served as co-head of Leveraged Finance and Capital Markets at Nomura Securities. Ms. Persily holds a BA in Economics and Psychology from Columbia College and an MBA in Finance and Accounting from Columbia Business School.

We believe Ms. Persily's experience and relationships in the financial sector, as well as her knowledge and understanding of corporate governance matters, adds to the Board's deep bench of experience, and serves as an asset to the Audit Committee, the Compensation Committee and the Nominating and Corporate Governance Committee.

R. Christopher Regan has been a member of the Board since his appointment in May 2017. Mr. Regan served on the SEACOR Holdings board of directors from September 2005 to May 2017. Mr. Regan is co-founder and, since March 2002, senior managing director, of The Chartis Group, a management consultancy group offering strategic, operational, risk management, governance and compliance advice to U.S. healthcare providers, suppliers and payers. Prior to co-founding The Chartis Group in 2001, Mr. Regan served from March 2001 to December 2001 as president of H-Works, a healthcare management consulting firm and a division of The Advisory Board Company. From January 2000 through December 2000, Mr. Regan served as senior vice president of Channelpoint, Inc., a healthcare information services company. Mr. Regan also serves as a trustee of Hamilton College.

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We believe that Mr. Regan's experience providing advice regarding business valuations, risk management, financial governance and compliance adds to the Board's breadth of experience. This knowledge also provides significant value to the Audit Committee, the Compensation Committee and the Nominating and Corporate Governance Committee.

Lisa P. Young has been a member of the Board since September 19, 2024. Ms. Young served in several leadership roles at Ernst & Young, most recently as a Senior Global Client Service Partner, until her retirement in 2021. Since December 2023, Ms. Young has served as a member of the board of directors and as the audit committee chair and member of the nominating and governance committee of Valo Health, Inc., a privately held technology company focused on using data and artificial intelligence to discover and develop therapeutics. Since January 2022, Ms. Young has served as a member of the board of directors of Accelus Inc., a privately held medical technology company, where she also has served as the chair of its audit and finance committee and as a member of its nominating and governance committee. From May 2022 until March 2024, Ms. Young served as a member of the board of directors, the audit and risk committee, and the compensation committee of Textainer Group Holdings Limited, a leading intermodal container lessor that was listed on the NYSE until the company was taken private in March 2024. Ms. Young also serves as a member of the audit and finance committees of the board of trustees for the Columbus Museum of Art, a member and finance chair of the board of directors of the Dallas Black Dance Theatre and for FringeArts in Philadelphia, and a member of the Texas Tech University Rawls College of Business advisory council. Ms. Young is a Certified Public Accountant and holds a BBA in Finance and Accounting from Texas Tech University.

We believe that Ms. Young's cross-sector, international experience in public accounting and professional services will provide an important perspective for the Board and will add value to the Audit Committee, the Compensation Committee and the Nominating and Corporate Governance Committee.

Voting

Directors will be elected by a plurality of the votes cast virtually or by proxy at the Annual Meeting. If you do not wish your shares to be voted for any particular nominee, please identify any nominee for whom you "withhold authority" to vote on the enclosed proxy card.

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SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS

The following table sets forth information regarding beneficial ownership of the Company's Common Stock by all persons (including any "group" as that term is defined in Section 13(d)(3) of the Exchange Act) who were known by the Company to be the beneficial owners of more than 5.0% of the outstanding Common Stock as of April 14, 2026, other than the Company's Named Executive Officers and directors. As of April 14, 2026, 27,062,277 shares of the Common Stock were issued and outstanding.

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SECURITY OWNERSHIP OF MANAGEMENT AND DIRECTORS

The following table sets forth information regarding beneficial ownership of our Common Stock by: (i) each current director of the Company, (ii) each named executive officer of the Company (referred to as a "Named Executive Officer" or "NEO" throughout this Proxy Statement), and (iii) all current directors and executive officers of the Company as a group. Except where otherwise indicated in the footnotes to the table, all beneficial ownership information set forth below is as of April 14, 2026.

* Represents less than 1.0%

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COMPENSATION OF DIRECTORS

The Compensation Committee, in consultation with the Nominating and Corporate Governance Committee, when appropriate, evaluates the status of Board compensation in relation to comparable U.S. companies (in terms of size, business sector, etc.) and reports findings and recommendations to the Board, including recommendations for approval of changes to compensation. Directors who are also employees of the Company receive no remuneration by reason of such directorship and are not compensated for attending meetings of the Board or standing committees thereof.

Non-employee directors are paid an annual cash retainer of $75,000, or a prorated portion thereof for any partial year service, and such directors are also eligible to participate in the SEACOR Marine Holdings Inc. 2025 Equity Incentive Plan that is administered by the Compensation Committee (the "2025 Plan," together with any other equity incentive plans of the Company, the "SEACOR Marine Equity Incentive Plans").

Historically, annual equity awards are granted to non-employee directors in June of each year. To account for the significant volatility in the Company's stock price, particularly over the last several years, in a way that was equitable to both directors and stockholders alike, the Compensation Committee determined it was appropriate to use a trailing 60-day volume weighted average price ("VWAP") of the Company's stock price for purposes of calculating the number of restricted shares of Common Stock granted to the non-employee directors. A trailing 60-day VWAP of the Company's stock price was also used for the purpose of calculating the number of restricted shares granted to NEOs in February 2025. Because the Company's closing stock price on the grant date had increased above the trailing 60-day VWAP of the Company's stock price used for purposes of the calculation of restricted stock awards to non-employee directors, the number of restricted shares of Common Stock granted to the non-employee directors in respect of their 2025 annual equity grant ended up being higher than it would have been had the closing price on the grant date been used. Use of a trailing 60-day VWAP is intended to smooth out volatility, understanding that, for any given year, the calculation of the number of restricted stock awards may be higher or lower than it would have been had the closing price on the grant date been used.

On June 3, 2025, upon the recommendation of the Compensation Committee, including with respect to the methodology described above for the calculation of the number of equity awards granted, the Board granted each non-employee director in office at such time an annual equity award for Board service with a grant date fair value of $105,071, comprised of 18,337 restricted shares of Common Stock. As Non-Executive Chairman, Mr. Morse was granted an additional annual equity award with a grant date fair value of $47,553, comprised of 8,299 restricted shares of Common Stock. In addition, the Board determined that each non-employee director serving on a committee of the Board at such time be compensated for such service as follows: (i) each committee member of the Audit Committee was granted an annual equity award with a grant date fair value of $11,890, comprised of 2,075 restricted shares of Common Stock (with the exception of Ms. Young, who was granted an annual equity award with a grant date fair value of $23,780, comprised of 4,150 restricted shares of Common Stock as the chair of the Audit Committee), (ii) each committee member of the Compensation Committee was granted an annual equity award with a grant date fair value of $11,890, comprised of 2,075 restricted shares of Common Stock (with the exception of Mr. Regan, who was granted an annual equity award with a grant date fair value of $23,780, comprised of 4,150 restricted shares of Common Stock as the chair of the Compensation Committee), and (iii) each committee member of the Nominating and Corporate Governance Committee was granted an annual equity award with a grant date fair value of $5,948, comprised of 1,038 restricted shares of Common Stock (with the exception of Mr. Regan, who was granted an annual equity award with a grant date fair value of $11,890, comprised of 2,075 restricted shares of Common Stock as the chair of the Nominating and Corporate Governance Committee). The restricted shares of Common Stock vest on the earlier of (i) the date of the 2026 annual meeting of stockholders of the Company, and (ii) June 3, 2026.

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NON-EMPLOYEE DIRECTOR COMPENSATION TABLE

The following table shows the compensation of the Company's non-employee directors for the year ended December 31, 2025. Mr. Gellert does not receive any compensation for his service on the Board.

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EXECUTIVE COMPENSATION

Currently, the Company is a "smaller reporting company" under applicable rules and regulations of the SEC and as such, is exempt from certain executive compensation disclosures otherwise required by Item 402 of Regulation S-K (including the disclosure required to be provided pursuant to a "Compensation, Discussion & Analysis"). In accordance with these rules and regulations, we are providing certain information related to the Company's 2025 compensation decisions that should be read in conjunction with the compensation tables provided later in this Proxy Statement. This discussion and the compensation tables that follow provide information regarding the fiscal 2025 compensation program for the following Named Executive Officers (or NEOs) of the Company:

Consideration of "Say on Pay" Vote Results

At the 2025 annual meeting of stockholders of the Company, a non-binding, advisory vote was taken with respect to the compensation of the Company's Named Executive Officers. 54% of the votes cast voted in favor of the "Say on Pay" advisory resolution approving the Company's Named Executive Officer compensation. The Compensation Committee considered the results of the 2025 advisory vote and noted that the percentage of stockholder support for the compensation of the Company's Named Executive Officers was significantly below the support expressed in prior years. In response to the 2025 Say on Pay advisory vote results, the Compensation Committee engaged in outreach to major institutional stockholders for feedback on the factors that influenced their voting decision, contacting twenty of the top twenty-five institutional stockholders of the Company, representing approximately 34.5% of common shares outstanding as of December 31, 2025. Only four of these stockholders responded to this outreach, and meetings were held with these four institutional stockholders, including the top three institutional stockholders of the Company, and each meeting included the participation of the chair of the Compensation Committee, who is an independent director.

These four stockholders provided a range of perspectives on executive compensation during the meetings and highlighted various areas of focus with respect to executive compensation for the Compensation Committee's consideration, including the following:

The Compensation Committee considered the feedback from stockholders and also considered other factors in evaluating the Company's executive compensation programs, including the continued volatility in the Company's stock price as well as commodity prices supporting the Company's business, and made the following changes with respect to the 2026 executive compensation program:

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These changes were implemented with respect to the equity awards granted in February 2026 under 2026 executive compensation program and will be discussed in detail in the disclosure materials for the 2027 annual meeting. Please note that 2025 compensation program discussed in this Proxy Statement reflects the executive compensation program prior to the above changes.

Summary of 2025 Compensation Elements

For 2025, the Compensation Committee implemented the following executive compensation practices:

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Executive Compensation Philosophy and Objectives

The Compensation Committee's compensation philosophy is that subjective consideration of the different elements of performance is necessary to provide the flexibility to make appropriate compensation decisions without solely relying on the use of formulas or benchmarking. Consequently, the Compensation Committee believes it is in the Company's best interest to conduct its own research regarding executive compensation, which includes a review of executive compensation at companies with similar business lines to that of the Company and a review of compensation at other entities that compete with the Company to employ executives with skills and specialties similar to those possessed by the Company's executives.

Oversight of Compensation Program

The Compensation Committee is responsible for overseeing our executive compensation programs. See the "Role of Compensation Committee" section of this Proxy Statement for more information on the role and responsibilities of the Compensation Committee.

Market Information

The Compensation Committee reviews reports on executive compensation trends issued by respected publications, and compiles compensation information through Equilar, proxy statements, compensation-related public disclosures, industry trade journals and other sources. The companies with similar lines of operating business considered in connection with the Compensation Committee's compensation analysis include Bristow Group Inc., Dorian LPG Ltd., Forum Energy Technologies, Inc., Gulf Island Fabrication, Inc., Helix Energy Solutions Group, Inc., Innovex International, Inc., International Seaways, Inc., NPK International Inc., Oil States International, Inc., and Tidewater Inc. The Compensation Committee does not target any particular percentile or comparative level of compensation for executive officers. It does, however, assess the general competitiveness of proposed compensation levels in relation to the compensation paid by peer companies.

Role of Independent Compensation Consultant

Pursuant to its charter, the Compensation Committee is authorized to retain and terminate any compensation consultant, as well as any independent legal, financial or other advisors, as it deems necessary. For fiscal year 2025, the Compensation Committee elected to continue to retain Lyons, Benenson & Company Inc. ("LB&Co") as its independent compensation consultant. LB&Co has acted as an independent compensation consultant to the Compensation Committee since 2017 and has assisted the Compensation Committee by providing research and analyses related to peer company data and related market practices as they pertain to executive and independent non-employee director compensation, upon periodic request by the Compensation Committee.

Prior to the retention of LB&Co, the Compensation Committee evaluated LB&Co's independence from management, taking into consideration all relevant factors, including the six independence factors specified in the NYSE listing rules and applicable SEC requirements. The Compensation Committee concluded that LB&Co is independent and that its work for the Compensation Committee does not raise any conflicts of interest.

Role of Executive Officers in Compensation Decisions

In evaluating executive compensation, Mr. Gellert assists the Compensation Committee in reviewing the performance of his direct reports and their progress in meeting individual goals in relation to their peers, their respective scope of responsibility and the entire Company. The Compensation Committee typically meets in the latter part of each year and early the following year, and Mr. Gellert is invited to those meetings

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in order to help evaluate and recommend compensation for the Named Executive Officers (other than with respect to his own compensation), taking into account the following factors:

Mr. Gellert does not participate in any decisions with respect to his own compensation.

Role of Compensation Committee

In making compensation decisions each year, the Compensation Committee considers the following factors:

The Compensation Committee also meets in executive session to consider the above factors for executives and to utilize these factors in evaluating Mr. Gellert's proposed compensation and performance. Additional meetings of the Compensation Committee are held as appropriate to review and grant equity awards to newly hired employees or to current employees in connection with promotions within the Company.

Elements of 2025 Compensation

Annual Base Salary

The annual base salaries paid to the Named Executive Officers reflect the experience and skill required for executing the Company's business strategy and overseeing its day-to-day operations. For 2025, the annual base salaries of each of Messrs. Gellert, Llorca, Everett and Rossmiller were $600,000, $375,000, $325,000 and $325,000, respectively. There have been no changes to annual base salaries of the Named Executive Officers since January 1, 2022.

Annual Bonus

Given the continued volatility in the Company's stock price as well as commodity prices supporting the Company's business, it was not realistic for the Compensation Committee to meaningfully design a formulaic annual bonus program for 2025. Following the end of 2025, the Compensation Committee determined that it was appropriate to award cash bonuses to the Named Executive Officers in respect of 2025 performance, after taking into consideration the following factors: (i) the individual contributions of the Named Executive Officers during 2025, including with respect to vessel transactions, securities repurchases, cost reduction initiatives, and other strategic matters, and (ii) the need to retain the Named Executive Officers given their collective industry knowledge and historical knowledge of the Company generally. After taking these factors into account, in early 2026 the Compensation Committee approved the payment of cash bonuses as follows: $750,000, $625,000, $525,000 and $450,000 for each of Mr. Gellert, Mr. Llorca, Mr. Everett and Mr. Rossmiller, respectively. 60% of such cash bonuses was paid in February 2026, and 20% of such cash bonuses will be paid in the first quarter of 2027 and 2028, respectively, subject in each case to the continued

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employment of the Named Executive Officer. In the event that an NEO's employment is terminated without "Cause" or an NEO resigns for "Good Reason" or upon the occurrence of a "Change in Control" (as such terms are defined in the applicable NEO's employment agreement), then any unpaid portion of the 2025 annual cash bonus will be paid out in connection with such event.

Long-term Incentives

The SEACOR Marine Equity Incentive Plans authorize the Compensation Committee to provide equity-based or other incentive-based compensation for the purpose of attracting and retaining the Company and its affiliates' directors, employees and certain consultants, and providing those directors, employees and consultants with incentive opportunities and rewards for superior performance. The types of awards under the SEACOR Marine Equity Incentive Plans may include stock options, stock appreciation rights, restricted stock and restricted stock units, performance awards and other stock-based awards.

The Compensation Committee established an equity-based compensation program for the Company in order to align the interests of senior employees with the Company's long-term growth. In general, equity grants are made on dates previously established by the Compensation Committee and the Company does not time the release of non-public information for the purpose of affecting the value of equity awards.

On February 28, 2025, the Compensation Committee approved restricted stock and PRSU awards to the Named Executive Officers. The Compensation Committee introduced PRSUs to its long-term equity program in 2019 in order to better align the Named Executive Officers' interests with the Company's stock price by tying the vesting of such awards directly to stock price appreciation, and the Compensation Committee continued this practice in 2025.

The restricted stock awards vest ratably over three years beginning on March 4, 2026, subject to continued employment on each applicable vesting date, with exceptions for certain involuntary terminations. The PRSUs consist of five equal tranches, each of which will be earned if and when the closing price of one share of Common Stock equals or exceeds the specified stock price performance goal for such tranche for 60 consecutive trading days during the three-year performance period beginning on the grant date, provided that any earned PRSUs will not vest and be settled until the third anniversary of the grant date. In order for earned PRSUs to vest and be settled, the executive must remain employed by the Company on the third anniversary of the grant date, subject to exceptions for certain involuntary termination events that occur prior to the vesting date. The specified stock price performance goals for each tranche are $7.61, $8.66, $9.78, $10.89 and $11.94, respectively. The Compensation Committee did not approve any other equity awards to the Named Executive Officers during 2025.

Pursuant to the applicable award agreements, the restricted stock and PRSU awards vest subject to the executive's continued employment with the Company on the applicable vesting date, subject to accelerated vesting upon the executive's death or qualified retirement or upon termination by the Company without "Cause" (including for disability). Upon any such acceleration event, PRSUs that have been earned with respect to the stock price goal(s) will be settled on the third anniversary of the grant date, without regard to the executive's employment with the Company as of such date.

The grant date fair value of the restricted stock and PRSU awards granted to each Named Executive Officer in 2025 is set forth in the table below:

In determining the applicable target value of restricted stock and PRSU awards, the Compensation Committee considered, among other factors, prior-year Company and individual performance, employee retention and incentives, and volatility in the Company's stock price and the impact this volatility has on the

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tangible value of the NEOs' equity awards. Consistent with prior years, the Compensation Committee determined that it would be appropriate to use a 60-day VWAP of the Company's stock price for purposes of calculating the number of restricted stock and PRSU awards granted. For example, on February 28, 2025, the date the 2025 awards were granted, the closing market price of our Common Stock was $5.79, and the 60-day VWAP was $6.56. Given the Compensation Committee had previously decided to use a 60-day VWAP, the Compensation Committee determined it would not be appropriate to change its methodology based on the decreased market price on or around the grant date, because the Compensation Committee's intent when it determined to use a 60-day VWAP was to smooth out potential stock price volatility. The grant date fair values of the Restricted Shares and PRSUs reflect the fact that the number of awards granted was based on a higher stock price (therefore yielding a lesser number of Restricted Shares and PRSUs than would have otherwise been granted had the closing market stock price on the grant date been used), and this number of shares is then multiplied by the closing stock price on the grant date (or otherwise incorporated into the Monte Carlo simulation with respect to the PRSUs), in order to calculate the grant date fair value from a financial reporting perspective. However, it is important to note that the grant date fair values reported in this Proxy Statement do not necessarily correlate to the value realized by the NEOs, because the value ultimately realized from these awards will be based on (i) satisfaction of the underlying vesting conditions, and (ii) the Company's market stock price when such awards vest.

Performance Results of 2022 PRSUs. On March 11, 2025, 100% of the PRSUs granted in 2022 were determined to have been achieved based on stock price performance during the three-year performance period over 2022-2025, and were settled in accordance with their terms.

Performance Results of 2023 PRSUs. On March 7, 2026, 20% of the PRSUs granted in 2023 were determined to have been achieved based on stock price performance during the three-year performance period over 2023-2026, and were settled in accordance with their terms. The remaining 80% of the PRSUs granted in 2023 were forfeited without consideration.

Performance Results of 2024 PRSUs. The three-year performance period with respect to PRSUs granted on March 4, 2024 ends on March 4, 2027. As of December 31, 2025, none of the specified stock price performance goals were satisfied for these PRSUs.

Performance Results of 2025 PRSUs. The three-year performance period with respect to PRSUs granted on February 28, 2025 ends on February 28, 2028. As of December 31, 2025, none of the specified stock price performance goals were satisfied for these PRSUs.

Stock Ownership Guidelines

The Compensation Committee has adopted Stock Ownership Guidelines (the "Ownership Guidelines") for executive officers at the Senior Vice President level or higher. Each executive officer subject to the Ownership Guidelines is expected to hold Company stock, including unvested restricted shares, with a value equal to a multiple of his or her annual base salary, as follows:

Neither unvested PRSUs nor options count toward satisfaction of the Ownership Guidelines. Officers subject to the Ownership Guidelines are expected to comply within five years from the date the individual is named to a participating position. As of February 28, 2026, all NEOs have met the stock ownership requirements.

In addition to the above stock ownership guidelines, in connection with the adoption of the 2025 Equity Incentive Plan, the Compensation Committee approved a minimum stock holding period with respect to

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shares of common stock issued to our CEO pursuant to the exercise of stock options or vesting of restricted shares or PRSUs, which requires the CEO to hold at least 50% of such shares of common stock (net of any shares disposed of in connection with the payment of an exercise or purchase price or satisfaction of any tax withholding obligations) for at least 12 months following the issuance date. This requirement is intended to even further align our CEO's long-term interests with those of stockholders.

Clawback Policy

The award agreements applicable to any stock options, restricted stock and PRSU awards granted to the Named Executive Officers in years 2017 through 2026 provide that the shares of Common Stock underlying such awards are subject to recoupment under any existing clawback policy or any clawback policy that the Company is required to adopt pursuant to the listing standards of any national securities exchange or association on which the Company's securities are listed or as is otherwise required by the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 or other applicable laws.

The Compensation Committee adopted a Clawback Policy intended to comply with the listing requirements of the NYSE. The Clawback Policy requires the Company to clawback erroneously awarded incentive compensation "received" (i.e., earned) by the covered officers during the three fiscal years that precede the date on which the Company determines it is required to prepare a "Big R" or "little r" accounting restatement. The Clawback Policy applies to those current and former officers who are subject to Section 16(a) of the Exchange Act, and applies to incentive-based compensation (i.e., compensation that is earned in whole or in part based on the attainment of financial performance measures). A copy of the Clawback Policy is included as an exhibit in the Company's 2025 Annual Report on Form 10-K filed with the SEC on February 25, 2026.

Policy Against Pledging and Hedging Company Securities

The Company has adopted policies restricting hedging and pledging of Company securities by our directors, senior officers and employees. The Board has designated Andrew H. Everett II, Senior Vice President, General Counsel and Secretary as the Company's compliance officer (the "Compliance Officer"). The Compliance Officer, along with other members of the compliance committee designated by the Board (the "Compliance Committee"), will review and either approve or prohibit all proposed trades of Common Stock by directors and executive officers and trades by specified employees outside of trading windows in accordance with the Company's Insider Trading and Tipping Procedures and Guidelines.

Certain forms of hedging or monetization transactions allow directors, executive officers, employees, and members of the households and dependents of such persons ("Covered Persons") to continue to own covered securities, but without the full risks and rewards of ownership. When that occurs, Covered Persons may no longer have the same objectives as the Company's other stockholders. Therefore, Covered Persons are prohibited from engaging in such transactions. Any person wishing to enter into such an arrangement must first pre-clear the proposed transaction with the Compliance Committee. Any request for pre-clearance of a hedging or similar arrangement must be submitted to the Compliance Officer at least two weeks prior to the proposed execution of documents evidencing the proposed transaction and must set forth a justification for the proposed transaction.

Retirement Plans

The Company's eligible U.S.-based employees may participate in the SEACOR Marine 401(k) Plan, a Company sponsored defined contribution plan ("SEACOR Marine 401(k) Plan"). For 2025, the Company matched employee contributions to the SEACOR Marine 401(k) Plan in the amount of 100% of the first 2.0% of an employee's eligible compensation that the employee contributed to the SEACOR Marine 401(k) Plan, and 50% of the next 4% of the employee's eligible compensation that the employee contributed to the SEACOR Marine 401(k) Plan, for a total match of 4% of such employee's eligible compensation, subject to applicable limitations.

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COMPENSATION TABLES

SUMMARY COMPENSATION TABLE

The following table sets forth certain compensation information for the Company's Named Executive Officers in respect of the fiscal years ended December 31, 2025 and 2024:

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OUTSTANDING EQUITY AWARDS AT FISCAL YEAR-END (2025)

The following table sets forth certain information with respect to outstanding equity awards at December 31, 2025, held by the Named Executive Officers.

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EMPLOYMENT CONTRACTS/TERMINATION OF EMPLOYMENT/CHANGE IN CONTROL

In connection with a review of the Company's executive compensation arrangements conducted during 2019, the Compensation Committee approved executive employment agreements for each of Messrs. Gellert, Llorca, Everett and Rossmiller (the "Executive Employment Agreements"), which agreements were executed and became effective on November 5, 2019.

The Executive Employment Agreements set forth the then-current base salary of each of Messrs. Gellert, Llorca, Everett and Rossmiller, and provides that each of them will have a target annual bonus opportunity equal to 100% of the executive's base salary as in effect from time to time.

Upon a termination of employment by the Company without "Cause" or resignation by the executive for "Good Reason" (as such terms are defined in the Executive Employment Agreements) (each, a "Qualifying Termination"), each executive will be eligible to receive the following severance benefits: (i) a lump sum payment equal to a multiple of the executive's base salary (2.0x for Mr. Gellert, 1.75x for Mr. Llorca and 1.5x for Messrs. Everett and Rossmiller), (ii) a lump sum amount equal to the average annual cash incentive bonus paid to the executive in respect of the last three calendar years prior to the year in which the executive's termination of employment occurred, (iii) a pro-rated annual bonus payable in respect of the year in which the termination occurs, based on actual achievement of the applicable performance goals, and pro-rated based on the number of days the executive was employed by the Company during the calendar year in which the termination occurs, (iv) a lump sum cash payment based on the employer portion of the monthly cost of maintaining health benefits for the executive and his eligible dependents for a period of time following the executive's termination of employment (24 months for Mr. Gellert, 21 months for Mr. Llorca and 18 months for Messrs. Everett and Rossmiller), and (v) immediate vesting of the unvested portion of certain equity awards, and an extended exercise period for the executive's outstanding stock options.

If a Qualifying Termination occurs within two years following a "Change in Control" (as such term is defined in the Executive Employment Agreement), the executive will be eligible to receive the same benefits described above, except that the bonus amount described in subsection (ii) above will be no less than the executive's target annual bonus for the year in which the termination occurs.

The executives' receipt of the severance benefits described above are subject to the executive's execution and non-revocation of an effective release of claims. The Executive Employment Agreements also provide for certain non-competition, non-solicitation and non-disparagement provisions that apply following a termination of employment. These benefits are in addition to benefits available generally to salaried employees, such as distributions under the Company's 401(k) savings plan, disability benefits and accrued vacation pay.

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POTENTIAL PAYMENTS UPON DEATH, DISABILITY, QUALIFIED RETIREMENT, TERMINATION WITHOUT CAUSE OR IN CONNECTION WITH A CHANGE IN CONTROL

The following table sets forth the potential payments and the acceleration of stock options, restricted stock and PRSUs upon the termination of employment of the employee, or the occurrence of a "Change in Control," in each case, as of December 31, 2025.

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EQUITY COMPENSATION PLAN INFORMATION

The following table sets forth information regarding the Company's equity compensation plans as of December 31, 2025.

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