NOTICE IS HEREBY given that the Annual Meeting of the holders of shares of common stock and holders of Series B preferred shares (collectively, the “Shareholders”)
of United Maritime Corporation (the “Company”) will be held on November 4, 2026, at 5:00 p.m. local time, at 154 Vouliagmenis Avenue, 16674 Glyfada, Greece (the “Meeting”)
for the following purposes, of which items 1, 2 and 3 are more completely set forth in the accompanying proxy statement for the Meeting (the “Proxy Statement”):
Adoption of Proposal One requires the affirmative vote of a plurality of the votes cast at the Meeting. Adoption of Proposal Two requires the affirmative vote of a majority of the votes cast by
the holders of shares of the Company’s common stock and Series B preferred shares entitled to vote thereon.
The Board has fixed the close of business on September 16, 2026 as the record date for the determination of the Shareholders entitled to receive notice and to vote at the Meeting or any
adjournment or postponement thereof. All Shareholders must present a form of personal photo identification in order to be admitted to the Meeting. In addition, if your shares of the Company’s common stock are held in the name of your broker, bank
or other nominee and you wish to attend the Meeting, you must bring an account statement or letter from the broker, bank or other nominee indicating that you were the owner of such shares on September 16, 2026.
If you attend the Meeting, you may vote your shares in person, even if you have previously voted by proxy. If your shares of the Company’s common stock are held in the name of your broker, bank
or other nominee and you intend to vote in person at the Meeting, you must present a legal proxy from your bank, broker or other nominee in order to vote. Holders of shares of common stock should speak to their brokers, banks or other nominees in
whose custody their shares are held for additional information.
IT IS IMPORTANT TO VOTE. WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING, PLEASE READ THE PROXY STATEMENT AND VOTE IN ACCORDANCE WITH THE INSTRUCTIONS CONTAINED IN THIS NOTICE. THE VOTE OF EVERY
SHAREHOLDER IS IMPORTANT AND YOUR COOPERATION IN RETURNING YOUR EXECUTED PROXY PROMPTLY WILL BE APPRECIATED. YOUR SIGNED PROXY WILL BE VOTED IN THE MANNER DIRECTED IN THE PROXY. ANY SIGNED PROXY RETURNED WITHOUT DIRECTION AS TO ONE OR MORE
PROPOSALS WILL BE VOTED TO THE EXTENT NO DIRECTION IS GIVEN IN FAVOR OF THE PROPOSALS PRESENTED IN THE PROXY STATEMENT.
This Notice presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all information contained in the proxy
materials before voting.
If you want to receive a paper or e-mail copy of these documents, you must request one by sending an e-mail to sendmaterial@proxyvote.com, calling +1-800-579-1639, or by making a request
online at www.proxyvote.com. There is no charge to you for requesting a copy. Please make your request for a copy on or before October 21, 2026 to facilitate timely delivery. If you request printed versions of these materials by mail, these
materials will also include the proxy card or voting instructions form for the Meeting.
Voting by internet. To vote your proxy via the internet, please go to www.proxyvote.com. Follow the steps outlined on the secure website. Validation information is provided in the notice card
accompanying this Notice. Proxies submitted via the internet must be received by 11:59 PM Eastern Time on November 3, 2026.
UNITED MARITIME CORPORATION
154 VOULIAGMENIS AVENUE
16674 GLYFADA
GREECE
PROXY STATEMENT FOR
ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD ON NOVEMBER 4, 2026
TABLE OF CONTENTS
| INFORMATION CONCERNING SOLICITATION AND VOTING |
3
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| QUESTIONS AND ANSWERS ABOUT THE PROXY MATERIALS AND THE MEETING |
4
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| DIRECTORS AND EXECUTIVE OFFICERS |
7
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| PROPOSAL ONE - ELECTION OF DIRECTORS |
9
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| PROPOSAL TWO - RATIFICATION OF APPOINTMENT OF INDEPENDENT AUDITORS |
11
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| OTHER MATTERS |
12
|
INFORMATION CONCERNING SOLICITATION AND VOTING
GENERAL
The enclosed proxy is solicited on behalf of the board of directors (the “Board”) of United Maritime Corporation, a Marshall Islands corporation (the “Company”), for use at the Annual Meeting of Shareholders to be held at 154 Vouliagmenis Avenue, 16674 Glyfada, Greece on November 4, 2026 at 5:00 p.m. local time, or at any adjournment or postponement thereof
(the “Meeting”), for the purposes set forth herein and in the accompanying Notice of Annual Meeting of Shareholders. This Proxy Statement and the accompanying form of proxy were made available to holders
of shares of common stock and holders of Series B preferred shares of the Company entitled to vote at the Meeting (collectively, the “Shareholders”) beginning on or about October 2, 2026.
VOTING RIGHTS AND OUTSTANDING SHARES
On September 16, 2026 (the “Record Date”), the Company had issued and outstanding 9,543,139 shares of common stock, par value $0.0001 per share (the “Common Shares”) and 40,000 Series B preferred shares, par value $0.0001 per share (the “Preferred Shares” and, together with the Common Shares, the “Shares”). Each Shareholder of record at the close of business on the Record Date is entitled to one vote for each Common Share then held and 25,000 votes for each Preferred Share then held provided that no
holder of Preferred Shares may exercise voting rights pursuant to such Preferred Shares that would result in the aggregate voting power of any beneficial owner of such Preferred Shares and its affiliates (whether pursuant to ownership of
Preferred Shares, Common Shares or otherwise) to exceed 49.99% of the total number of votes eligible to be cast on any matter submitted to a vote of our shareholders. All issued and outstanding Preferred Shares are held by our Chairman and
Chief Executive Officer, Stamatios Tsantanis, and as a result Mr. Tsantanis will control 49.99% of the votes eligible to be cast on the proposals considered at the Meeting.
All Shareholders must present a form of personal official government-issued photo identification in order to be admitted to the Meeting. In addition, if your Common Shares are held in the name
of your broker, bank or other nominee and you wish to attend the Meeting, you must bring an account statement or letter from the broker, bank or other nominee indicating that you were the owner of such shares on September 16, 2026.
One or more Shareholders present in person or by proxy at the Meeting, representing one-third of the capital stock of the Company issued and outstanding and entitled to vote thereat, shall
constitute a quorum for the purposes of the Meeting. The Shares represented by proxy in the enclosed form will be voted in accordance with the instructions given on the proxy if the proxy is properly executed and is received by the Company
prior to the close of voting at the Meeting or any adjournment or postponement thereof. Any proxies returned without instructions will be voted FOR the proposals set forth on the enclosed proxy.
The Common Shares are listed on the Nasdaq Capital Market under the symbol “USEA”.
REVOCABILITY OF PROXIES
A Shareholder giving a proxy may revoke it at any time before it is exercised. A proxy may be revoked by filing at 154 Vouliagmenis Avenue, 16674 Glyfada, Greece, a written notice of revocation
by a duly executed proxy bearing a later date, or by attending the Meeting and voting in person. If your Common Shares are held in the name of your broker, bank or other nominee and you intend to vote in person at the Meeting, you must present
a legal proxy from your bank, broker or other nominee in order to vote. Holders of Common Shares should speak to their brokers, banks or other nominees in whose custody their shares are held for additional information.
QUESTIONS AND ANSWERS ABOUT THE PROXY MATERIALS AND THE MEETING
Why am I receiving these proxy materials?
The proxy materials include our Notice of Annual Meeting of Shareholders, the accompanying letter from our Chairman and Chief Executive Officer and this Proxy Statement (the “Proxy
Statement”). If you requested printed versions of these materials by mail, these materials also include the proxy card or voting instructions form for the Meeting. The Board has made these materials available to you in connection with
the solicitation of proxies by the Board. The proxies will be used at the Meeting or any adjournment or postponement thereof. We made these materials available to Shareholders beginning on or about October 2, 2026.
Our Shareholders are invited to attend the Meeting and vote on the proposals described in this Proxy Statement. However, you do not need to attend the Meeting to vote your Shares. Instead, you may vote by
completing, signing, dating and returning a proxy card or by executing a proxy via the internet or by telephone.
How can I access the proxy materials on the Internet?
We are using the internet as the primary means of furnishing this Proxy Statement. Accordingly, Shareholders will not receive paper copies of the Proxy Statement unless they have requested them. We instead sent
Shareholders our Notice of Annual Meeting of Shareholders (the “Notice”), which includes instructions (i) for accessing via the internet the Proxy Statement and (ii) for voting via the internet. The
Notice was mailed on or about October 2, 2026. The Notice also provides information on how Shareholders may obtain paper copies of the Proxy Statement if they so choose. Additionally, you may access the Proxy Statement at www.proxyvote.com.
The Notice also provides you with instructions regarding how to instruct us to send future proxy materials to you electronically by e-mail.
Choosing to receive future proxy materials by e-mail will save us the cost of printing and mailing documents to you and will reduce the impact of our annual meetings on the environment. If you choose to receive
future proxy materials by e-mail, you will receive an e-mail next year with instructions containing a link to those materials and a link to the proxy voting website. Your election to receive proxy materials by e-mail will remain in effect until
you terminate it.
Who can vote?
Only Shareholders of record at the close of business on the Record Date, which is September 16, 2026, may vote, either in person or by proxy, at the Meeting. On the Record Date, we had 9,543,139 Common Shares
issued and outstanding and 40,000 Preferred Shares issued and outstanding. Holders of Common Shares are entitled to one vote for each Common Share held on the Record Date. Holders of Preferred Shares are entitled to 25,000 votes for each
Preferred Share held on the Record Date, provided that no holder of Preferred Shares may exercise voting rights pursuant to such Preferred Shares that would result in the aggregate voting power of any beneficial owner of such Preferred Shares
and its affiliates (whether pursuant to ownership of Preferred Shares, Common Shares or otherwise) to exceed 49.99% of the total number of votes eligible to be cast on any matter submitted to a vote of our shareholders. All issued and
outstanding Preferred Shares are held by our Chairman and Chief Executive Officer, Stamatios Tsantanis, and as a result Mr. Tsantanis will control 49.99% of the votes eligible to be cast on the proposals considered at the Meeting.
How do I know if I am a beneficial owner of shares?
If your shares are held in an account at a brokerage firm, bank, broker-dealer, trust, or other similar organization, you are considered the beneficial owner of shares held in “street name”, and the Notice was
forwarded to you by that organization. As a beneficial owner, you have the right to instruct that organization on how to vote the shares held in your account. Those instructions are contained in a “voting instructions form”.
What am I voting on?
You will be voting on each of the following:
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1. |
To elect two Class A Directors, Ms. Christina Anagnostara and Mr. Ioannis Kartsonas, to serve until the 2029 Annual Meeting of Shareholders (“Proposal One”);
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2. |
To ratify the appointment of Ernst & Young (Hellas) Certified Auditors Accountants S.A. to serve as the Company’s independent auditors for the fiscal year ending December 31, 2026 (“Proposal Two”);
and
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3. |
To transact any other business as may properly come before the Meeting or any adjournment or postponement thereof.
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As of the date of this Proxy Statement, the Board knows of no other matters that will be brought before the Meeting. If you return your signed and completed proxy card or vote by telephone or over the internet
and other matters are properly presented at the Meeting for consideration, the persons appointed as proxies will have the discretion to vote for you.
What vote is required to adopt each of the proposals?
Adoption of Proposal One requires the affirmative vote of a plurality of the votes cast at the Meeting. This means that the nominees receiving the highest number of “FOR” votes will be elected as Class A
directors. Abstentions and “broker non-votes” (shares held by a broker or nominee that does not have discretionary authority to vote on a particular matter and has not received voting instructions from its client) will not affect the vote on
Proposal One.
Adoption of Proposal Two requires the affirmative vote of a majority of the votes cast by the holders of Shares entitled to vote thereon. Abstentions and “broker non-votes” will not affect the vote on Proposal
Two.
How do I vote?
You may vote using one of the following methods:
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• |
Over the internet. If you have access to the internet, we encourage you to vote in this manner. Refer to your Notice for instructions on voting via the internet and carefully follow the
directions.
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• |
By telephone. You may vote by telephone by calling the toll-free number referenced on your proxy card or the notice card accompanying your Notice and following the recorded instructions. Refer
to your proxy card or the notice card accompanying your Notice for validation information. Instructions to vote by telephone are also listed on your proxy card or the voting instructions form.
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• |
By mail. For those Shareholders who request to receive a paper proxy card or voting instructions form in the mail, you may complete, sign and return the proxy card or voting instructions form
by mail using the post-paid envelope provided.
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• |
In person at the Meeting. All Shareholders of record on the Record Date, which is the close of business on September 16, 2026, may vote in person at the Meeting. If you are a beneficial owner
of shares (i.e., your shares are held in “street name” in an account at a brokerage firm, bank, broker dealer or similar organization), you must obtain a legal proxy from such account holding organization and present it with your ballot
to be able to vote at the Meeting. Even if you plan to be present at the Meeting, we encourage you to vote your Shares prior to the Meeting date via the internet, by telephone or by mail in order to record your vote promptly, as we
believe voting this way is more convenient.
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Instructions for voting via the internet, by telephone or by mail are also set forth on the proxy card or voting instructions form. Please follow the directions on these materials carefully.
Can I change my mind after I vote?
You may change your vote at any time before the polls close at the Meeting. You may do this by using one of the following methods:
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• |
voting again by telephone or over the internet by 11:59 PM Eastern Time on November 3, 2026;
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• |
giving timely written notice to the Secretary of our Company;
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• |
delivering a timely later-dated proxy; or
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• |
voting in person at the Meeting.
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If you hold Common Shares through a broker, bank or other nominee, you may revoke any prior voting instructions by contacting that firm or by voting in person via legal proxy at the Meeting.
How many votes must be present to hold the Meeting?
In order for us to conduct the Meeting, the Shareholders representing at least one-third of the shares issued and outstanding and entitled to vote at the Meeting as of the Record Date must be present at the
Meeting in person or by proxy. This is referred to as a quorum. Abstentions and broker “non-votes” are counted for purposes of determining the presence or absence of a quorum for the transaction of business at the Meeting. Your shares will be
counted as present at the Meeting if you do one of the following:
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• |
vote via the internet or by telephone;
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• |
return a properly executed proxy by mail (even if you do not provide voting instructions); or
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• |
attend the Meeting and vote in person.
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Even if a quorum is not present at the Meeting, a majority of the total number of votes represented by those Shares present, in person or by proxy, at the Annual Meeting will have the power to adjourn the
meeting. If the Meeting is adjourned for reasons other than a lack of quorum, no further notice of the adjourned meeting will be required to permit further solicitation of proxies, other than an announcement at the Meeting, unless a new record
date for the Meeting is set.
What if I return my proxy but do not provide voting instructions?
If you hold your Shares directly in your own name, and you sign and return your proxy card, or vote by telephone or over the internet, but do not include voting instructions as to one or more proposals, your
proxy will be voted to the extent no instructions are included as the Board recommends on each proposal.
DIRECTORS AND EXECUTIVE OFFICERS
Set forth below are the names, ages and positions of our current directors and executive officers. Members of our Board are elected annually on a staggered basis, and each director elected
holds office for a three-year term. Officers are elected from time to time by vote of our board of directors and hold office until a successor is elected. The business address of each of our directors and executive officers listed below is 154
Vouliagmenis Avenue, 16674 Glyfada, Greece.
|
Name
|
|
Age
|
|
Position
|
|
Director Class
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|
|
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54
|
|
Chairman, Chief Executive Officer & Director
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C (term expires in 2028)
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Stavros Gyftakis
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47
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Chief Financial Officer & Director
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B (term expires in 2027)
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Christina Anagnostara
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55
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Director*
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A (term expires in 2026)
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Ioannis Kartsonas
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54
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Director*
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A (term expires in 2026)
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Dimitrios Kostopoulos
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51
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Director*
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B (term expires in 2027)
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Biographical information with respect to each of our directors and our executive officer is set forth below.
Stamatios Tsantanis is the founder and the Chairman, Chief Executive Officer and a member of our board of directors. Mr. Tsantanis
serves currently as the Chairman of the board of directors and the Chief Executive Officer of Seanergy Maritime Holdings Corp. (Nasdaq: SHIP, "Seanergy"), serving in the role since October 2012 and has led Seanergy’s significant growth to a
world-renowned Capesize dry bulk shipping company with a cargo carrying capacity of approximately 3.5 million dwt, expected to increase to approximately 4.8 million dwt upon completion of Seanergy’s announced fleet expansion program. Mr.
Tsantanis also served as Seanergy’s Interim Chief Financial Officer from November 2013 until October 2018. Mr. Tsantanis has been actively involved in the shipping and finance industry since 1998 and has held senior management positions in
prominent private and public shipping companies, as well as financial institutions. Mr. Tsantanis holds a Master of Science (MSc) in Shipping Trade and Finance from Bayes Business School of City University of London and a Bachelor of Science
(BSc) in Shipping Economics from the University of Piraeus. He also serves in the board of directors of Breakwave Advisors LLC, the commodity trading advisor for the Breakwave Dry Bulk Shipping ETF (NYSE: BDRY) and the Breakwave Tanker Shipping
ETF (NYSE: BWET) and is a fellow of the Institute of Chartered Shipbrokers. Mr. Tsantanis is a frequent speaker at major shipping conferences worldwide and also a regular guest lecturer at leading international academic institutions in the
maritime sector.
Stavros Gyftakis is our Chief Financial Officer and a member of our board of directors. Mr. Gyftakis is also Seanergy’s Chief
Financial Officer and has been instrumental in Seanergy’s capital raising, debt financing and refinancing activities since 2017. He has more than 20 years of experience in banking and corporate finance with focus on the shipping sector. Mr.
Gyftakis has held key positions across a broad shipping finance spectrum, including asset backed lending, debt and corporate restructurings, risk management, financial leasing and loan syndications. Before joining Seanergy, he was a Senior Vice
President on the Greek shipping finance desk at DVB Bank SE. Mr. Gyftakis received his Master of Science (MSc) in Shipping Trade and Finance from Bayes Business School (formerly known as Cass Business School) in London with Distinction. He also
holds a Master of Science (MSc) in Business Mathematics, awarded with Honors, from the Athens University of Economics and Business and a Bachelor of Science (BSc) in Mathematics from the Aristotle University of Thessaloniki.
Christina Anagnostara is a member of our board of directors and the Chairman and a member of
United’s Audit and Nominating Committees. Ms. Anagnostara is also a member of the board of directors of Seanergy, and between 2008 to 2013 she served as Seanergy’s Chief Financial Officer. She has more than 27 years of maritime and
international business experience in the areas of finance, banking, capital markets, consulting, accounting and audit. Before joining Seanergy, she served in executive and board positions of publicly listed companies in the maritime industry
and she was responsible for the financial, capital raising and accounting functions. Since 2017 she has been a Managing Director in the Investment Banking Division of AXIA Ventures Group, which is a member of Alpha Bank Group as of December 16,
2025, and between 2014 and 2017 she provided advisory services to corporate clients involved in all aspects of the maritime industry. From 2006 to 2008, she served as the Chief Financial Officer and member of the board of directors of Global
Oceanic Carriers Ltd, a dry bulk shipping company listed on the Alternative Investment Market of the London Stock Exchange. Between 1999 and 2006, she was a senior management consultant of the Geneva-based EFG Group. Prior to EFG Group, she
worked for Eurobank EFG and Ernst & Young. Ms. Anagnostara has studied Economics in Athens and is a Certified Chartered Accountant.
Ioannis Kartsonas is a member of our board of directors, the Chairman and a member of United’s Compensation Committee and a member of
United’s Nominating Committee. Mr. Kartsonas is also a member of the board of directors of Seanergy and the Principal and Managing Partner of Breakwave Advisors LLC., the Commodity Trading Advisor (CTA) for the Breakwave Dry Bulk Shipping ETF
(NYSE: BDRY) and the Breakwave Tanker Shipping ETF (NYSE: BWET). Mr. Kartsonas has been actively involved in finance and commodities trading since 2000. From 2011 to 2017, he was a Senior Portfolio Manager at Carlyle Commodity Management, a
commodity-focused investment firm based in New York and part of the Carlyle Group, being responsible for the firm’s shipping and freight investments. During his tenure, he managed one of the largest freight futures funds globally. Prior to this
role, Mr. Kartsonas was a Co-Founder and Portfolio Manager at Sea Advisors Fund, an investment fund focused in shipping. From 2004 to 2009, he was the leading Transportation Analyst at Citi Investment Research covering the broader
transportation space, including the shipping industry. Prior to that, he was an Equity Analyst focusing on shipping and energy for Standard & Poor’s Investment Research. Mr. Kartsonas holds an MBA in Finance from the Simon School of
Business, University of Rochester.
Dimitrios Kostopoulos is a member of our board of directors and a member of United’s Audit and Compensation Committees. Mr.
Kostopoulos is Deputy Chief Executive Officer (Deputy CEO) of Alpha Asset Management M.F.M.C., one of the leading asset management firms in Greece, a position he has held since July 2026. He has more than 25 years of professional experience in
the financial services sector, with extensive expertise in capital markets, investor relations, asset management and private banking. During the preceding four years, he served as Chief Executive Officer of Alpha Finance S.A., the brokerage
subsidiary of the Alpha Bank Group, where he led the firm's strategic and operational development. Prior to this appointment, he was Head of Investor Relations of the Alpha Bank Group for more than a decade, with primary responsibility for the
Group's engagement with institutional investors and shareholders. In this capacity, he contributed significantly to the successful execution of major equity and debt capital markets transactions during one of the most challenging periods for
the Greek economy and banking sector. Earlier in his career, he served as a Fund Manager at Alpha Asset Management M.F.M.C. and held various positions within the Private Banking and Treasury divisions of the Alpha Bank Group. He holds a Master
of Science (MSc) in Shipping, Trade & Finance from Bayes Business School (formerly Cass Business School), City St George's, University of London.
No family relationships exist among any of the directors and executive officers.
PROPOSAL ONE - ELECTION OF DIRECTORS
The Board consists of five directorships divided into three classes. As provided in the Company’s Amended and Restated Articles of Incorporation, as amended to date, each director is elected to
serve for a three-year term and until such director’s successor is elected and has qualified.
The Board has nominated Ms. Christina Anagnostara and Mr. Ioannis Kartsonas, being Class A Directors, for re-election as directors for a term expiring at the 2029 Annual Meeting of
Shareholders.
Unless the proxy is marked to indicate that such authorization is expressly withheld, the person or persons named in the enclosed proxy intend to vote the shares authorized thereby FOR the
election of the following nominee. It is expected that the nominee will be able to serve, but if before the election it develops that the nominee is unavailable, the person or persons named in the accompanying proxy will vote for the election
of such substitute(s) nominee(s) as the current Board may recommend.
Nominees for Election to the Board
Information concerning the nominees for directors of the Company is set forth below:
|
Name
|
Position
|
Director Since
|
Age
|
| |
|
|
|
|
Christina Anagnostara
|
Class A Director
|
2022
|
55
|
| |
|
|
|
|
Ioannis Kartsonas
|
Class A Director
|
2022
|
54
|
Christina Anagnostara is a member of our board of directors and the Chairman and a member of
United’s Audit and Nominating Committees. Ms. Anagnostara is also a member of the board of directors of Seanergy, and between 2008 to 2013 she served as Seanergy’s Chief Financial Officer. She has more than 27 years of maritime and
international business experience in the areas of finance, banking, capital markets, consulting, accounting and audit. Before joining Seanergy, she served in executive and board positions of publicly listed companies in the maritime industry
and she was responsible for the financial, capital raising and accounting functions. Since 2017 she has been a Managing Director in the Investment Banking Division of AXIA Ventures Group, which is a member of Alpha Bank Group as of December 16,
2025, and between 2014 and 2017 she provided advisory services to corporate clients involved in all aspects of the maritime industry. From 2006 to 2008, she served as the Chief Financial Officer and member of the board of directors of Global
Oceanic Carriers Ltd, a dry bulk shipping company listed on the Alternative Investment Market of the London Stock Exchange. Between 1999 and 2006, she was a senior management consultant of the Geneva-based EFG Group. Prior to EFG Group, she
worked for Eurobank EFG and Ernst & Young. Ms. Anagnostara has studied Economics in Athens and is a Certified Chartered Accountant.
Ioannis Kartsonas is a member of our board of directors, the Chairman and a member of United’s Compensation Committee and a member of
United’s Nominating Committee. Mr. Kartsonas is also a member of the board of directors of Seanergy and the Principal and Managing Partner of Breakwave Advisors LLC., the Commodity Trading Advisor (CTA) for the Breakwave Dry Bulk Shipping ETF
(NYSE: BDRY) and the Breakwave Tanker Shipping ETF (NYSE: BWET). Mr. Kartsonas has been actively involved in finance and commodities trading since 2000. From 2011 to 2017, he was a Senior Portfolio Manager at Carlyle Commodity Management, a
commodity-focused investment firm based in New York and part of the Carlyle Group, being responsible for the firm’s shipping and freight investments. During his tenure, he managed one of the largest freight futures funds globally. Prior to this
role, Mr. Kartsonas was a Co-Founder and Portfolio Manager at Sea Advisors Fund, an investment fund focused in shipping. From 2004 to 2009, he was the leading Transportation Analyst at Citi Investment Research covering the broader
transportation space, including the shipping industry. Prior to that, he was an Equity Analyst focusing on shipping and energy for Standard & Poor’s Investment Research. Mr. Kartsonas holds an MBA in Finance from the Simon School of
Business, University of Rochester.
Required Vote. Adoption of Proposal One requires the affirmative vote of a plurality of the votes cast at the Meeting.
Effect of Abstentions, “Withhold” Votes and Broker Non-Votes. Abstentions, “WITHHOLD” votes and any broker “non-votes” will not affect the vote on Proposal
One.
THE BOARD UNANIMOUSLY RECOMMENDS A VOTE IN FAVOR OF THE PROPOSED DIRECTORS. UNLESS REVOKED AS PROVIDED ABOVE, PROXIES RECEIVED BY THE MANAGEMENT WILL BE VOTED IN FAVOR OF THE PROPOSED DIRECTORS
UNLESS A CONTRARY VOTE IS SPECIFIED.
PROPOSAL TWO - RATIFICATION OF APPOINTMENT OF INDEPENDENT AUDITORS
The Board is submitting for ratification at the Meeting the appointment of Ernst & Young (Hellas) Certified Auditors Accountants S.A. to serve as the Company’s independent auditors for the
fiscal year ending December 31, 2026.
Ernst & Young (Hellas) Certified Auditors Accountants S.A. has advised the Company that the firm does not have any direct or indirect financial interest in the Company, nor did the firm
have any such interest in connection with the Company or its predecessor during the past three fiscal years.
All services rendered by the independent auditors are subject to review by the Audit Committee.
Required Vote. Adoption of Proposal Two requires the affirmative vote of a majority of the votes cast by the holders of the Shares entitled to vote
thereon.
Effect of Abstentions and Broker Non-Votes. Abstentions and broker “non-votes” will not affect the vote on Proposal Two.
THE BOARD UNANIMOUSLY RECOMMENDS A VOTE FOR RATIFICATION OF THE APPOINTMENT OF ERNST & YOUNG (HELLAS) CERTIFIED AUDITORS ACCOUNTANTS S.A. TO SERVE AS THE COMPANY’S INDEPENDENT AUDITORS FOR
THE FISCAL YEAR ENDING DECEMBER 31, 2026. UNLESS REVOKED AS PROVIDED ABOVE, PROXIES RECEIVED BY THE MANAGEMENT WILL BE VOTED IN FAVOR OF SUCH APPROVAL UNLESS A CONTRARY VOTE IS SPECIFIED.
OTHER MATTERS
No other matters are expected to be presented for action at the Meeting. Should any additional matter come before the Meeting, it is intended that proxies in the accompanying form will be voted in accordance with
the judgment of the person or persons named in the proxy.
Signature [PLEASE SIGN WITHIN BOX] Date Signature (Joint Owners) Date TO
VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. T04247-Z93932 1b. Ioannis Kartsonas For Against
Abstain ! ! ! * To elect two Class A Directors to serve until the 2029 Annual Meeting of Shareholders 2. To ratify the appointment of Ernst & Young (Hellas) Certified Auditors Accountants S.A. to serve as the Company’s
independent auditors for the fiscal year ending December 31, 2026. Note: Please sign exactly as name appears herein. Joint owners should each sign. When signing as attorney, executor, administrator, corporate officer, trustee,
guardian, or custodian, please give full title. 1. Election of Directors * 1a. Christina Anagnostara UNITED MARITIME CORPORATION The Board of Directors recommends a vote FOR the nominees listed in Proposal 1 and FOR Proposal
2. Please indicate if you plan to attend this meeting. ! ! ! ! For Withhold Yes No ! ! SCAN TO VIEW MATERIALS & VOTE UNITED MARITIME CORPORATION 154 VOULIAGMENIS AVENUE 16674 GLYFADA, GREECE VOTE BY INTERNET -
www.proxyvote.com or scan the QR Barcode above Use the Internet to transmit your voting instructions and for electronic delivery of information by 11:59 p.m. Eastern Time the day before the meeting date. Have your proxy card in hand
when you access the web site and follow the instructions to obtain your records and to create an electronic voting instruction form. ELECTRONIC DELIVERY OF FUTURE PROXY MATERIALS If you would like to reduce the costs incurred by our
company in mailing proxy materials, you can consent to receiving all future proxy statements and proxy cards electronically via e-mail or the Internet. To sign up for electronic delivery, please follow the instructions above to vote
using the Internet and, when prompted, indicate that you agree to receive or access proxy materials electronically in future years. VOTE BY PHONE - 1-800-690-6903 Use any touch-tone telephone to transmit your voting instructions by
11:59 p.m. Eastern Time the day before the meeting date. Have your proxy card in hand when you call and then follow the instructions. VOTE BY MAIL Mark, sign and date your proxy card and return it in the postage-paid envelope we have
provided or return it to Vote Processing, c/o Broadridge, 51 Mercedes Way, Edgewood, NY 11717.
T04248-Z93932 THIS PROXY IS SOLICITED BY THE BOARD OF DIRECTORS FOR THE
ANNUAL MEETING OF SHAREHOLDERS OF UNITED MARITIME CORPORATION TO BE HELD ON NOVEMBER 4, 2026 Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting: The Notice and Proxy Statement and the CEO Letter are
available at www.proxyvote.com. FOLD HERE • DO NOT SEPARATE • INSERT IN ENVELOPE PROVIDED PROXY THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF UNITED MARITIME CORPORATION The undersigned hereby revokes all
previous proxies relating to the shares covered hereby and acknowledges receipt of the notice and proxy statement relating to the Annual Meeting of Shareholders, the terms of which are incorporated herein by reference. The undersigned
hereby appoints Mr. Stamatios Tsantanis and Ms. Theodora Mitropetrou, and each of them, with power to act without the other and with power of substitution, as proxies and attorneys-in-fact and hereby authorizes them to represent and
vote, as provided on the other side, all shares of United Maritime Corporation’s common or preferred stock which the undersigned is entitled to vote, and, in their discretion, to vote upon such other business as may properly come before
the Annual Meeting of the Shareholders of United Maritime Corporation to be held on November 4, 2026 or any adjournment or postponement thereof, with all powers which the undersigned would possess if present at the meeting. WHEN
PROPERLY EXECUTED, THIS PROXY WILL BE VOTED AS SET FORTH HEREIN AS DIRECTED BY THE SHAREHOLDER, OR IF NO DIRECTION IS INDICATED, BUT THE CARD IS SIGNED, WILL BE VOTED "FOR" THE PROPOSALS AND IN THE DISCRETION OF THE PROXIES WITH RESPECT
TO SUCH OTHER BUSINESS AS MAY PROPERLY COME BEFORE THE MEETING. (Continued, and to be marked and signed, on the other side)