United Maritime Corp

Our current amended and restated articles of incorporation have been filed as Exhibit 1.1 to our Registration Statement on Form 20-F filed on June 6, 2022. The information contained in this exhibit is incorporated by reference herein.

On December 27, 2023, our board of directors adopted the Second Amended and Restated Bylaws of the Company, which are attached to this report as Exhibit 1.2.

A description of the material terms of our amended and restated articles of incorporation and second amended and restated bylaws and of our capital stock is included in “Description of Securities” attached hereto as Exhibit 2.4 and incorporated by reference herein.

Attached as exhibits to this annual report are the contracts we consider to be both material and outside the ordinary course of business and are to be performed in whole or in part after the filing of this annual report. We refer you to “Item 4. Information on the Company – A. History and Development of the Company,” “Item 4. Information on the Company – B. Business Overview,” “Item 5. Operating and Financial Review and Prospects – B. Liquidity and Capital Resources,” and “Item 7. Major Shareholders and Related Party Transactions – B. Related Party Transactions” for a discussion of our material contracts. Other than as discussed in this annual report, we have no material contracts, other than contracts entered into in the ordinary course of business, to which we are a party.

Under Marshall Islands law, there are currently no restrictions on the export or import of capital, including foreign exchange controls, or restrictions that affect the remittance of dividends, interest or other payments to non-resident holders of our common shares.

The following represents the opinion of our United States and Marshall Islands tax counsel, Watson Farley & Williams LLP, and is a summary of the material U.S. federal income tax and Marshall Islands tax consequences of the ownership and disposition of our common shares as well as the material U.S. federal and Marshall Islands income tax consequences applicable to us and our operations. The discussion below of the U.S. federal income tax consequences to “U.S. Holders” will apply to a beneficial owner of our common shares that is treated for U.S. federal income tax purposes as:

If you are not described as a U.S. Holder and are not an entity treated as a partnership or other pass-through entity for U.S. federal income tax purposes, you will be considered a “Non-U.S. Holder.” The U.S. federal income tax consequences applicable to Non-U.S. Holders is described below under the heading “United States Federal Income Taxation of Non-U.S. Holders.”

This discussion does not consider the tax treatment of partnerships or other pass-through entities or persons who hold our common shares through such entities. If a partnership (or other entity classified as a partnership for U.S. federal income tax purposes) is the beneficial owner of our common shares, the U.S. federal income tax treatment of a partner in the partnership generally will depend on the status of the partner and the activities of the partnership.

This summary is based on the U.S. Internal Revenue Code of 1986, as amended, or the Code, its legislative history, Treasury Regulations promulgated thereunder, published rulings and court decisions, all as currently in effect. These authorities are subject to change, possibly on a retroactive basis.

This summary does not address all aspects of U.S. federal income taxation that may be relevant to any particular holder based on such holder’s individual circumstances. In particular, this discussion considers only holders that will own and hold our common shares as capital assets within the meaning of Section 1221 of the Code and does not address the potential application of the alternative minimum tax or the U.S. federal income tax consequences to holders that are subject to special rules, including:

This summary does not address any aspect of U.S. federal non-income tax laws, such as gift or estate tax laws, or state, local or non-U.S. tax laws.

We have not sought, nor do we intend to seek, a ruling from the Internal Revenue Service, or the IRS, as to any U.S. federal income tax consequence described herein. The IRS may disagree with the description herein, and its determination may be upheld by a court.

Because of the complexity of the tax laws and because the tax consequences to any particular holder of our common shares may be affected by matters not discussed herein, each such holder is urged to consult with its tax advisor with respect to the specific tax consequences of the ownership and disposition of our common shares, including the applicability and effect of state, local and non-U.S. tax laws, as well as U.S. federal tax laws.

United States Federal Income Tax Consequences

Taxation of Operating Income in General

Unless exempt from United States federal income taxation under the rules discussed below, a foreign corporation is subject to United States federal income taxation in respect of any income that is derived from the use of vessels, from the hiring or leasing of vessels for use on a time, voyage or bareboat charter basis, from the participation in a shipping pool, partnership, strategic alliance, joint operating agreement, code sharing arrangement or other joint venture it directly or indirectly owns or participates in that generates such income, or from the performance of services directly related to those uses, which we refer to as “shipping income,” to the extent that the shipping income is derived from sources within the United States. For these purposes, 50% of the gross shipping income that is attributable to transportation that begins or ends, but that does not both begin and end, in the United States, exclusive of certain U.S. territories and possessions, constitutes income from sources within the United States, which we refer to as “U.S. source gross shipping income.”

Shipping income attributable to transportation that both begins and ends in the United States is considered to be 100% from sources within the United States. We are prohibited by law from engaging in transportation that produces income considered to be 100% from sources within the United States.

Shipping income attributable to transportation exclusively between non-U.S. ports will be considered to be 100% derived from sources outside the United States. Shipping income earned by us that is derived from sources outside the United States will not be subject to any United States federal income tax.

We are subject to a 4% tax imposed without allowance for deductions for such taxable year, as described in “– Taxation in Absence of Exemption,” unless we qualify for exemption from tax under Section 883 of the Code, the requirements of which are described in detail below.

Exemption of Operating Income from United States Federal Income Taxation

Under Section 883 of the Code and the regulations thereunder, we will be exempt from United States federal income taxation on our U.S. source shipping income if (i) we are organized in a foreign country (our “country of organization”) that grants an “equivalent exemption” to corporations organized in the United States and (ii) one of the following statements is true:

The jurisdictions where we and our subsidiaries are incorporated grant “equivalent exemptions” to United States corporations. Therefore, we will be exempt from United States federal income taxation with respect to our U.S. source shipping income if we satisfy either the 50% Ownership Test or the Publicly-Traded Test.

50% Ownership Test

Under the regulations, a foreign corporation will satisfy the 50% Ownership Test for a taxable year if (i) for at least half of the number of days in the taxable year, more than 50% of the value of its stock is owned, directly or constructively through the application of certain attribution rules prescribed by the regulations, by one or more shareholders who are residents of foreign countries that grant “equivalent exemption” to corporations organized in the United States and (ii) the foreign corporation satisfies certain substantiation and reporting requirements with respect to such shareholders. These substantiation requirements are onerous and therefore there can be no assurance that we would be able to satisfy them, even if our share ownership would otherwise satisfy the requirements of the 50% Ownership Test.

We believe that we did not satisfy the 50% Ownership Test for our 2024 taxable year.

Publicly-Traded Test

The regulations provide that the stock of a foreign corporation will be considered to be “primarily traded” on an established securities market in a country if the number of shares of each class of stock used to satisfy the Publicly-Traded Test that is traded during the taxable year on all established securities markets in that country exceeds the number of shares in each such class that is traded during that year on established securities markets in any other single country.

Under the regulations, the stock of a foreign corporation will be considered “regularly traded” if one or more classes of its stock representing 50% or more of its outstanding shares, by total combined voting power of all classes of stock entitled to vote and by total combined value of all classes of stock, are listed on one or more established securities markets (such as the Nasdaq Capital Market on which our common shares are traded), which we refer to as the “listing threshold.”

The regulations further require that with respect to each class of stock relied upon to meet the listing requirement: (i) such class of the stock is traded on the market, other than in minimal quantities, on at least sixty (60) days during the taxable year or one-sixth (1/6) of the days in a short taxable year; and (ii) the aggregate number of shares of such class of stock traded on such market is at least 10% of the average number of shares of such class of stock outstanding during such year or as appropriately adjusted in the case of a short taxable year. Even if a foreign corporation does not satisfy both tests, the regulations provide that the trading frequency and trading volume tests will be deemed satisfied by a class of stock if such class of stock is traded on an established market in the United States and such class of stock is regularly quoted by dealers making a market in such stock.

Notwithstanding the foregoing, the regulations provide, in pertinent part, that a class of stock will not be considered to be “regularly traded” on an established securities market for any taxable year in which 50% or more of the vote and value of the outstanding shares of such class of stock are owned, actually or constructively under specified attribution rules, on more than half the days during the taxable year by persons who each own directly or indirectly 5% or more of the vote and value of such class of stock, whom we refer to as “5% Shareholders.” We refer to this restriction in the regulations as the “Closely-Held Rule.”

For purposes of being able to determine our 5% Shareholders, the regulations permit a foreign corporation to rely on Schedule 13G and Schedule 13D filings with the Commission. The regulations further provide that an investment company that is registered under the Investment Company Act of 1940, as amended, will not be treated as a 5% Shareholder for such purposes.

We believe that our common shares constituted 50% or more of our outstanding shares, by total combined voting power of all classes of our stock entitled to vote and by total combined value of all classes of stock for 2024. Furthermore, based on our analysis of our shareholdings during 2024 (Schedule 13G and Schedule 13D filings with the Commission), we believe that we satisfied the Publicly-Traded Test for our 2024 taxable year, and intend to take this position on our tax return.

Due to the factual nature of the issues involved, there can be no assurance that we and our subsidiaries will qualify for the benefits of Section 883 of the Code for the subsequent taxable years.

Taxation in Absence of Exemption

To the extent the benefits of Section 883 are unavailable, our U.S. source gross shipping income, to the extent not considered to be “effectively connected” with the conduct of a U.S. trade or business, as described below, would be subject to a 4% tax imposed by Section 887 of the Code on a gross basis, without the benefit of deductions, otherwise referred to as the “4% Tax.” Since under the sourcing rules described above, no more than 50% of our shipping income would be treated as being derived from U.S. sources, the maximum effective rate of U.S. federal income tax on our shipping income would never exceed 2% under the 4% Tax.

To the extent the benefits of the Section 883 exemption are unavailable and our U.S. source gross shipping income is considered to be “effectively connected” with the conduct of a U.S. trade or business, as described below, any such “effectively connected” U.S. source gross shipping income, net of applicable deductions, would be subject to the U.S. federal corporate income tax currently imposed at a rate of 21%. In addition, we may be subject to the 30% “branch profits” tax on earnings effectively connected with the conduct of such trade or business, as determined after allowance for certain adjustments, and for certain interest paid or deemed paid attributable to the conduct of our U.S. trade or business.

Our U.S. source gross shipping income would be considered “effectively connected” with the conduct of a U.S. trade or business only if:

We do not intend to have, or permit circumstances that would result in having, any vessel operating to the United States on a regularly scheduled basis, or earn income from the leasing of a vessel attributable to a fixed place of business in the United States. Based on the foregoing and on the expected mode of our shipping operations and other activities, we believe that none of our U.S. source gross shipping income will be “effectively connected” with the conduct of a U.S. trade or business.

United States Taxation of Gain on Sale of Vessels

Regardless of whether we qualify for exemption under Section 883, we will not be subject to United States federal income taxation with respect to gain realized on a sale of a vessel, provided the sale is considered to occur outside of the United States under United States federal income tax principles. In general, a sale of a vessel will be considered to occur outside of the United States for this purpose if title to the vessel, and risk of loss with respect to the vessel, pass to the buyer outside of the United States. It is expected that any sale of a vessel by us will be considered to occur outside of the United States.

United States Federal Income Taxation of U.S. Holders

Taxation of Distributions Paid on Common Shares

Subject to the passive foreign investment company, or PFIC, rules discussed below, any distributions made by us with respect to common shares to a U.S. Holder will generally constitute dividends, which may be taxable as ordinary income or “qualified dividend income” as described in more detail below, to the extent of our current or accumulated earnings and profits, as determined under U.S. federal income tax principles. Distributions in excess of our earnings and profits will be treated first as a non-taxable return of capital to the extent of the U.S. Holder’s tax basis in his common shares on a dollar-for-dollar basis and thereafter as capital gain. Because we are not a U.S. corporation, U.S. Holders that are corporations will generally not be entitled to claim a dividends-received deduction with respect to any distributions they receive from us.

Dividends paid on common shares to a U.S. Holder which is an individual, trust, or estate (a “U.S. Non-Corporate Holder”) will generally be treated as “qualified dividend income” that is taxable to such shareholders at preferential U.S. federal income tax rates provided that (1) the common shares are readily tradable on an established securities market in the United States (such as the Nasdaq Capital Market on which the common shares are currently listed); (2) we are not a passive foreign investment company, or PFIC, for the taxable year during which the dividend is paid or the immediately preceding taxable year (which we do not believe we are or have been, and do not expect to be); (3) the U.S. Non-Corporate Holder has owned the common shares for more than 60 days in the 121-day period beginning 60 days before the date on which the common shares become ex-dividend; and (4) certain other conditions are met.

Any dividends paid by us which are not eligible for these preferential rates will be taxed as ordinary income to a U.S. Holder.

Special rules may apply to any “extraordinary dividend” — generally, a dividend in an amount which is equal to or in excess of 10% of a shareholder’s adjusted basis in a common share — paid by us. If we pay an “extraordinary dividend” on our common shares that is treated as “qualified dividend income,” then any loss derived by a U.S. Non-Corporate Holder from the sale or exchange of such common shares will be treated as long-term capital loss to the extent of such dividend.

Sale, Exchange or other Disposition of Common Shares

Assuming we do not constitute a PFIC for any taxable year, a U.S. Holder generally will recognize taxable gain or loss upon a sale, exchange or other disposition of our common shares in an amount equal to the difference between the amount realized by the U.S. Holder from such sale, exchange or other disposition and the U.S. Holder’s tax basis in such stock. Such gain or loss will be treated as long-term capital gain or loss if the U.S. Holder’s holding period in the common shares is greater than one year at the time of the sale, exchange or other disposition. A U.S. Holder’s ability to deduct capital losses is subject to certain limitations.

Passive Foreign Investment Company Rules

Special U.S. federal income tax rules apply to a U.S. Holder that holds stock in a foreign corporation classified as a PFIC for U.S. federal income tax purposes. In general, we will be treated as a PFIC with respect to a U.S. Holder if, for any taxable year in which such holder held our common shares, either:

For purposes of determining whether we are a PFIC, we will be treated as earning and owning our proportionate share of the income and assets, respectively, of any of our subsidiary companies in which we own at least 25% of the value of the subsidiary’s stock or other ownership interest. Income earned, or deemed earned, by us in connection with the performance of services should not constitute passive income. By contrast, rental income, which includes bareboat hire, would generally constitute “passive income” unless we are treated under specific rules as deriving rental income in the active conduct of a trade or business.

Based on our current operations and future projections, we do not believe that we are or have been a PFIC during our 2024 taxable year, nor do we expect to become, a PFIC with respect to our 2025 taxable year or any future taxable year. Although there is no legal authority directly on point, our determination is based principally on the position that, for purposes of determining whether we are a PFIC, the gross income we derive or are deemed to derive from the time chartering and voyage chartering activities of our wholly owned subsidiaries should constitute services income, rather than rental income. Correspondingly, we believe that such income does not constitute passive income, and the assets that we or our wholly owned subsidiaries own and operate in connection with the production of such income, in particular the vessels, do not constitute passive assets for purposes of determining whether we are a PFIC. We believe there is substantial legal authority supporting our position consisting of case law and Internal Revenue Service pronouncements concerning the characterization of income derived from time charters and voyage charters as services income. However, there is also authority which characterizes time charter income as rental income rather than services income for other tax purposes. It should be noted that in the absence of any legal authority specifically relating to the statutory provisions governing PFICs, the Internal Revenue Service or a court could disagree with this position. In addition, although we intend to conduct our affairs in a manner so as to avoid being classified as a PFIC with respect to any taxable year, there can be no assurance that the nature of our operations will not change in the future.

As discussed more fully below, if we were to be treated as a PFIC for any taxable year, a U.S. Holder would be subject to different taxation rules depending on whether the U.S. Holder makes an election to treat us as a “Qualified Electing Fund,” which election is referred to as a “QEF election.” As an alternative to making a QEF election, a U.S. Holder should be able to make a “mark-to-market” election with respect to the common shares, as discussed below. In addition, if we were to be treated as a PFIC, a U.S. Holder would be required to file an IRS Form 8621 with respect to such holder’s common shares.

Taxation of U.S. Holders Making a Timely QEF Election

If a U.S. Holder makes a timely QEF election, which U.S. Holder is referred to as an “Electing Holder,” the Electing Holder must report each year for U.S. federal income tax purposes its pro rata share of our ordinary earnings and its net capital gain, if any, for our taxable year that ends with or within the taxable year of the Electing Holder, regardless of whether or not distributions were received from us by the Electing Holder. The Electing Holder’s adjusted tax basis in the common shares will be increased to reflect taxed but undistributed earnings and profits. Distributions of earnings and profits that had been previously taxed will result in a corresponding reduction in the adjusted tax basis in the common shares and will not be taxed again once distributed. An Electing Holder would generally recognize capital gain or loss on the sale, exchange or other disposition of the common shares. A U.S. Holder would make a QEF election with respect to any year that we are a PFIC by filing IRS Form 8621 with his, her or its U.S. federal income tax return. After the end of each taxable year, we will determine whether we were a PFIC for such taxable year. If we determine or otherwise become aware that we are a PFIC for any taxable year, we will use commercially best efforts to provide each U.S. Holder with all necessary information, including a PFIC Annual Information Statement, in order to enable such holder to make a QEF election for such taxable year.

Taxation of U.S. Holders Making a “Mark-to-Market” Election

Alternatively, if we were to be treated as a PFIC for any taxable year and, as anticipated, our common shares are treated as “marketable stock,” a U.S. Holder would be allowed to make a “mark-to-market” election with respect to our common shares. If that election is made, the U.S. Holder generally would include as ordinary income in each taxable year the excess, if any, of the fair market value of the common shares at the end of the taxable year over such U.S. Holder’s adjusted tax basis in the common shares. The U.S. Holder would also be permitted an ordinary loss in respect of the excess, if any, of the U.S. Holder’s adjusted tax basis in the common shares over its fair market value at the end of the taxable year, but only to the extent of the net amount previously included in income as a result of the mark-to-market election. A U.S. Holder’s tax basis in his common shares would be adjusted to reflect any such income or loss amount. Gain realized on the sale, exchange or other disposition of the common shares would be treated as ordinary income, and any loss realized on the sale, exchange or other disposition of the common shares would be treated as ordinary loss to the extent that such loss does not exceed the net mark-to-market gains previously included by the U.S. Holder.

Taxation of U.S. Holders Not Making a Timely QEF or Mark-to-Market Election

Finally, if we were to be treated as a PFIC for any taxable year, a U.S. Holder who does not make either a QEF election or a “mark-to-market” election for that year, whom we refer to as a “Non-Electing Holder,” would be subject to special rules with respect to (1) any excess distribution (i.e., the portion of any distributions received by the Non-Electing Holder on our common shares in a taxable year in excess of 125 percent of the average annual distributions received by the Non-Electing Holder in the three preceding taxable years, or, if shorter, the Non-Electing Holder’s holding period for the common shares), and (2) any gain realized on the sale, exchange or other disposition of our common shares. Under these special rules:

These penalties would not apply to a pension or profit sharing trust or other tax-exempt organization that did not borrow funds or otherwise utilize leverage in connection with its acquisition of our common shares. If a Non-Electing Holder who is an individual dies while owning our common shares, such Non-Electing Holder’s successor generally would not receive a step-up in tax basis with respect to such stock.

Net Investment Income Tax

A U.S. Holder that is an individual or estate, or a trust that does not fall into a special class of trusts that is exempt from such tax, is subject to a 3.8% tax on the lesser of (1) such U.S. Holder’s “net investment income” (or undistributed “net investment income” in the case of estates and trusts) for the relevant taxable year and (2) the excess of such U.S. Holder’s modified adjusted gross income for the taxable year over a certain threshold (which in the case of individuals will be between $125,000 and $250,000, depending on the individual’s circumstances). A U.S. Holder’s net investment income will generally include its gross dividend income and its net gains from the disposition of the common shares, unless such dividends or net gains are derived in the ordinary course of the conduct of a trade or business (other than a trade or business that consists of certain passive or trading activities). Net investment income generally will not include a U.S. Holder’s pro rata share of the Company’s income and gain (if we are a PFIC and that U.S. Holder makes a QEF election, as described above in “— Taxation of U.S. Holders Making a Timely QEF Election”). However, a U.S. Holder may elect to treat inclusions of income and gain from a QEF election as net investment income. Failure to make this election could result in a mismatch between a U.S. Holder’s ordinary income and net investment income. If you are a U.S. Holder that is an individual, estate or trust, you are urged to consult your tax advisor regarding the applicability of the net investment income tax to your income and gains in respect of your investment in our common shares.

United States Federal Income Taxation of Non-U.S. Holders

Dividends paid to a Non-U.S. Holder with respect to our common shares generally should not be subject to U.S. federal income tax, unless the dividends are effectively connected with the Non-U.S. Holder’s conduct of a trade or business within the United States (and, if required by an applicable income tax treaty, are attributable to a permanent establishment or fixed base that such holder maintains in the United States).

In addition, a Non-U.S. Holder generally should not be subject to U.S. federal income tax on any gain attributable to a sale or other disposition of our common shares unless such gain is effectively connected with its conduct of a trade or business in the United States (and, if required by an applicable income tax treaty, is attributable to a permanent establishment or fixed base that such holder maintains in the United States) or the Non-U.S. Holder is an individual who is present in the United States for 183 days or more in the taxable year of sale or other disposition and certain other conditions are met (in which case such gain from United States sources may be subject to tax at a 30% rate or a lower applicable tax treaty rate).

Dividends and gains that are effectively connected with the Non-U.S. Holder’s conduct of a trade or business in the United States (and, if required by an applicable income tax treaty, are attributable to a permanent establishment or fixed base in the United States) generally should be subject to tax in the same manner as for a U.S. Holder and, if the Non-U.S. Holder is a corporation for U.S. federal income tax purposes, it also may be subject to an additional branch profits tax at a 30% rate or a lower applicable tax treaty rate.

Backup Withholding and Information Reporting

In general, information reporting for U.S. federal income tax purposes should apply to distributions made on our common shares within the United States to a non-corporate U.S. Holder and to the proceeds from sales and other dispositions of our common shares to or through a U.S. office of a broker by a non-corporate U.S. Holder. Payments made (and sales and other dispositions effected at an office) outside the United States will be subject to information reporting in limited circumstances.

In addition, backup withholding of U.S. federal income tax, currently at a rate of 24%, generally should apply to distributions paid on our common shares to a non-corporate U.S. Holder and the proceeds from sales and other dispositions of our common shares by a non-corporate U.S. Holder, who:

A Non-U.S. Holder generally may eliminate the requirement for information reporting and backup withholding by providing certification of its foreign status, under penalties of perjury, on a duly executed applicable IRS Form W-8 or by otherwise establishing an exemption.

Backup withholding is not an additional tax. Rather, the amount of any backup withholding generally should be allowed as a credit against a U.S. Holder’s or a Non-U.S. Holder’s U.S. federal income tax liability and may entitle such holder to a refund, provided that certain required information is timely furnished to the IRS.

Individuals who are U.S. Holders (and to the extent specified in applicable Treasury regulations, certain individuals who are Non-U.S. Holders and certain U.S. entities) who hold “specified foreign financial assets” (as defined in Section 6038D of the Code) are required to file IRS Form 8938 with information relating to the asset for each taxable year in which the aggregate value of all such assets exceeds $75,000 at any time during the taxable year or $50,000 on the last day of the taxable year (or such higher dollar amount as prescribed by applicable Treasury regulations). Specified foreign financial assets would include, among other assets, our common shares, unless the shares are held through an account maintained with a U.S. financial institution. Substantial penalties apply to any failure to timely file IRS Form 8938, unless the failure is shown to be due to reasonable cause and not due to willful neglect. Additionally, in the event an individual U.S. Holder (and to the extent specified in applicable Treasury regulations, an individual Non-U.S. Holder or a U.S. entity) that is required to file IRS Form 8938 does not file such form, the statute of limitations on the assessment and collection of U.S. federal income taxes of such holder for the related tax year may not close until three years after the date that the required information is filed. U.S. Holders (including U.S. entities) and Non-U.S. Holders are encouraged to consult their own tax advisors regarding their reporting obligations under this legislation.

Marshall Islands Tax Consequences

We are incorporated in the Republic of the Marshall Islands. In the opinion of our Marshall Islands tax counsel, Watson Farley & Williams LLP, under current Marshall Islands law, we are not subject to tax on income or capital gains. No Marshall Islands withholding tax will be imposed upon payment of dividends by us to its shareholders, and holders of our common shares that are not residents of or domiciled or carrying on any commercial activity in the Republic of the Marshall Islands will not be subject to Marshall Islands tax on the sale or other disposition of our common shares.

We file annual reports and other information with the Commission. Our Commission filings are also available to the public at the website maintained by the Commission at http://www.sec.gov, as well as on our website at www.unitedmaritime.gr. The information contained on, or that can be accessed through, these websites is not incorporated by reference herein and does not form part of this annual report.

We are currently not required to provide an annual report to security holders in response to the requirements of Form 6-K.