Exhibit 99.1

INTERNATIONAL SEAWAYS REPORTS

FOURTH QUARTER AND FULL YEAR 2025 RESULTS

Cumulative Shareholder Returns to Exceed $1 Billion Since 2020

New York, NY – February 26, 2026 – International Seaways, Inc. (NYSE: INSW) (the “Company,” “Seaways,” or “INSW”), one of the largest tanker companies worldwide providing energy transportation services for crude oil and petroleum products, today reported results for the fourth quarter and full year 2025.

HIGHLIGHTS & RECENT DEVELOPMENTS

Annual and Quarterly Results:

Fleet Optimization Program:

Healthy Balance Sheet:

Returns to Shareholders:

Lois K. Zabrocky, International Seaways President and CEO commented, “We concluded 2025 with our strongest quarter since the first quarter of 2024, with solid contributions from both the crude and product segments and a return of VLCCs as leaders in tanker earnings. Our fleet renewal activity in 2025 reflects the disciplined approach we strive to take across the cycles: monetizing older assets at attractive values while securing modern tonnage that positions the fleet for long-term trading opportunities. We remained active through the fourth quarter and into the start of the year highlighted by the sales of older vessels, the strategic consolidation of Tankers International, and substantial returns to shareholders amid the strength of the tanker markets.”

Ms. Zabrocky continued, “Strong market fundamentals remain the underlying driver of tanker earnings, while today’s geopolitical environment has served as a powerful catalyst. Beneath the geopolitical headlines, we continue to see healthy oil demand growth of more than one million barrels per day, alongside supply growth from the Americas and OPEC+. On the supply side, while the orderbook stands at more than 15% of the existing fleet, nearly half of the fleet is expected to reach 20 years of age by the time those vessels deliver. At the same time, we are seeing increased enforcement actions targeting sanctioned tonnage, which now exceeds the size of the orderbook, and we expect this to constrain effective fleet growth in compliant trades. Against this backdrop, Seaways remains well positioned with our significant operating leverage to convert positive market dynamics into strong cash flow generation, supporting the continued execution of our disciplined capital allocation strategy.”

Jeff Pribor, the Company’s CFO stated, “Following the placement of $250 million in senior unsecured bonds, we repaid higher-cost debt and unencumbered six additional vessels. Over the course of the year, we took advantage of our financial strength and flexibility to renew the fleet without stretching the balance sheet, funding investments through sales of older vessels and attractively priced financing, while reducing our net loan-to-value ratio to 13% and returning nearly $150 million to shareholders. With continued strength in tanker markets into 2026, we remain focused on deploying cash flow toward fleet renewal and shareholder returns.”

FOURTH QUARTER 2025 RESULTS

Net income for the fourth quarter of 2025 was $128 million, or $2.56 per diluted share, compared to net income of $36 million, or $0.72 per diluted share, for the fourth quarter of 2024. The increase in results was primarily driven by higher TCE revenues(1) from spot earnings across the fleet, with weighted average spot rates increasing by approximately $15,400 per day, and the impact of fleet optimization, reflected in lower vessel expenses and gains on vessel sales compared with a non-cash impairment charge in the fourth quarter of 2024.

Shipping revenues for the fourth quarter were $268 million, compared to $195 million for the fourth quarter of 2024. Consolidated TCE revenues(1) for the fourth quarter were $260 million, compared to $191 million for the fourth quarter of 2024.

Adjusted EBITDA(1) for the fourth quarter was $175 million, compared to $95 million for the fourth quarter of 2024.

Crude Tankers

Shipping revenues for the Crude Tankers segment were $151 million for the fourth quarter of 2025, compared to $96 million for the fourth quarter of 2024. TCE revenues(1) were $147 million for the fourth quarter, compared to $93 million for the fourth quarter of 2024. This increase was attributable to higher spot earnings across the segment, with weighted average spot rates increasing by over $26,000 per day and higher time charter revenues, reflecting incremental profit sharing of approximately $36,900 per day on our dual-fuel VLCCs.

Product Carriers

Shipping revenues for the Product Carriers segment were $117 million for the fourth quarter of 2025, compared to $99 million for the fourth quarter of 2024. TCE revenues(1) were $113 million for the fourth quarter of 2025, compared to $97 million for the fourth quarter of 2024. The increase was driven by higher spot earnings across the product segment, with weighted average spot rates increasing by over $8,000 per day.

FLEET OPTIMIZATION PROGRAM

On January 27, 2026, the Company acquired sole ownership of Tankers International, a leading shipping pool founded in 2000, providing commercial management of modern, independent VLCC tonnage. Tankers International has formed a new pool to expand its commercial management into the Suezmax class, to which the Company expects to contribute its Suezmax vessels trading in the spot market.

During the fourth quarter of 2025, the Company took delivery of Seaways Gibbs Hill, a 2020-built, scrubber-fitted VLCC. In August 2025, the Company agreed to purchase the vessel for $119 million, of which $12 million was paid during the third quarter in connection with the agreement.

In the fourth quarter, the Company sold three MR vessels with an average age of 18.5 years for net proceeds of $36 million. During the year ended December 31, 2025, the Company sold ten vessels, eight MRs and two LR1s, with an average age of 18.0 years for proceeds of approximately $131 million, excluding two vessels that were swapped in early 2025. The vessel swap exchanged two older VLCCs and $3 million in cash for three younger MRs through a series of vessel sales and purchase agreements spanning over the fourth quarter of 2024 and the first quarter of 2025.

Between December 2025 and February 2026, the Company sold or entered into agreements to sell seven vessels for aggregate proceeds of approximately $216 million, net of commissions and fees. The vessels are among the oldest remaining in the fleet, consisting of five MRs with an average age of 18 years and two VLCCs with an average age of 15 years. The Company expects to close these transactions during the first quarter of 2026 and recognize gains from the vessel sales of approximately $80 million.

During the fourth quarter of 2025, the Company took delivery of the Seaways Balboa, the second of six LR1 newbuildings under construction in Korea with K Shipbuilding Co., Ltd. The aggregate contract price for the six scrubber-fitted, dual-fuel ready LR1 vessels is approximately $359 million. As of December 31, 2025, the Company has approximately $188 million in remaining construction costs, of which approximately $158 million is expected to be drawn from the ECA Credit Facility (as defined below) in accordance with the delivery schedule. In the first quarter of 2026, the Company paid approximately $30 million in installment payments related to the construction of these vessels.

In the fourth quarter, the Company entered into a time charter agreement for one year on a 2012-built Suezmax that commenced in November 2025. As of January 1, 2026, the Company has 13 vessels on time charter agreements with an average duration of 1.4 years and total future contracted revenues through expiry of approximately $210 million, excluding any applicable profit share.

BALANCE SHEET ENHANCEMENTS

In September 2025, the Company successfully issued $250 million of senior unsecured bonds maturing in 2030 in the Norwegian bond market at a coupon rate of 7.125%. Proceeds from the bonds were used in the exercise of declared purchase options on existing sale leaseback arrangements bearing interest at SOFR plus 405 basis points with an 18-year amortization profile. The purchase options were paid in November 2025 for $258 million, which unencumbered six VLCCs, reduced interest expense and eliminated approximately $22 million in annual mandatory principal payments.

In August 2025, the Company entered into a Korean export agency-backed financing with DNB Bank and K-Sure for up to $240 million, secured by six LR1 newbuildings delivering between the third quarter of 2025 and the third quarter of 2026 (the “ECA Credit Facility”). The 12-year facility combines for a 20-year amortization profile and a blended interest rate of SOFR plus 125 basis points across two tranches. Funds will be drawn under the facility in connection with the delivery of each vessel. During 2025, the Company drew $82 million in connection with the delivery of two vessels.

In the year ended December 30, 2025, the Company repaid $145 million on its revolving credit facilities, composed of $69 million, primarily borrowed for timing differences in connection with the vessel swap and $76 million to offset capacity reductions in our revolving credit facilities.

RETURNING CASH TO SHAREHOLDERS

In December 2025, the Company paid a combined dividend of $0.86 per share of common stock, composed of a regular quarterly dividend of $0.12 per share of common stock and a supplemental dividend of $0.74 per share.

On February 25, 2026, the Company’s Board of Directors declared a combined dividend of $2.15 per share of common stock, composed of a regular quarterly dividend of $0.12 per share of common stock and a supplemental dividend of $2.03 per share of common stock. Both dividends will be paid on March 30, 2026, to shareholders with a record date at the close of business on March 20, 2026.

In October 2025, the Company’s Board of Directors extended the expiry of the $50 million share repurchase program to the end of 2026.

(1) This is a non-GAAP financial measure used throughout this press release; please refer to the section “Reconciliation to Non-GAAP Financial Information” for explanations of our non-GAAP financial measures and the reconciliations of reported GAAP to non-GAAP financial measures.

CONFERENCE CALL

The Company will host a conference call to discuss its fourth quarter 2025 results at 9:00 a.m. Eastern Time on Thursday, February 26, 2026. To access the call, participants should dial (833) 470-1428 for domestic callers and (929) 526-1599 for international callers and entering 699376. Please dial in ten minutes prior to the start of the call. A live webcast of the conference call will be available from the Investor Relations section of the Company’s website at https://www.intlseas.com.

An audio replay of the conference call will be available until March 13, 2026, by dialing (866) 813-9403 for domestic callers and +44 204 525 0658 for international callers, and entering Access Code 421241.

ABOUT INTERNATIONAL SEAWAYS, INC.

International Seaways, Inc. (NYSE: INSW) is one of the largest tanker companies worldwide providing energy transportation services for crude oil and petroleum products in International Flag markets. International Seaways owns and operates a fleet of approximately 70 vessels across the principal tanker asset classes including four vessels on order. International Seaways has an experienced team committed to the very best operating practices and the highest levels of customer service and operational efficiency. International Seaways is headquartered in New York City, NY. Additional information is available at https://www.intlseas.com.

Forward-Looking Statements

This release contains forward-looking statements. In addition, the Company may make or approve certain statements in future filings with the U.S. Securities and Exchange Commission (the “SEC”), in press releases, or in oral or written presentations by representatives of the Company. All statements other than statements of historical facts should be considered forward-looking statements. These matters or statements may relate to plans to issue dividends, the Company’s prospects, including statements regarding vessel acquisitions, expected synergies, trends in the tanker markets, and possibilities of strategic alliances and investments. Forward-looking statements are based on the Company’s current plans, estimates and projections, and are subject to change based on a number of factors. Investors should carefully consider the risk factors outlined in more detail in the Annual Report on Form 10-K for 2025 for the Company, and in similar sections of other filings made by the Company with the SEC from time to time. The Company assumes no obligation to update or revise any forward-looking statements. Forward-looking statements and written and oral forward-looking statements attributable to the Company or its representatives after the date of this release are qualified in their entirety by the cautionary statements contained in this paragraph and in other reports previously or hereafter filed by the Company with the SEC.

Investor Relations & Media Contact:

Tom Trovato, International Seaways, Inc.

(212) 578-1602

ttrovato@intlseas.com

Category: Earnings

Spot and Fixed TCE Rates Achieved and Revenue Days

The following tables provides a breakdown of TCE rates achieved for spot and fixed charters and the related revenue days for the three months and fiscal year ended December 31, 2025 and the comparable periods of 2024. Revenue days in the quarter ended December 31, 2025 totaled 5,945 compared with 6,697 in the prior year quarter. Revenue days in the year ended December 31, 2025 totaled 25,393 compared with 25,904 in the prior year. The information in these tables excludes commercial pool fees/commissions averaging approximately $942 and $764 per day for the three months ended December 31, 2025 and 2024, respectively, and approximately $924 and $902 per day for the years ended December 31, 2025 and 2024, respectively.

(a) In May 2025, the 2010-built Seaways Raffles delivered into the Tankers International 15-plus pool, which is excluded from the average spot TCE rate presented in the tables above. If the 15-plus pool was included, the average VLCC TCE spot rate would be $75,428 per day on 618 revenue days for the fourth quarter of 2025, and $44,817 per day on 2,697 revenue days for the full year 2025.

Revenue days in the above table exclude days related to full service lighterings and certain of the Company’s vessels that were employed in transitional voyages.

During the 2025 and 2024 periods, each of the Company’s LR1s participated in the Panamax International Pool and transported crude oil cargoes exclusively.

Fleet Information

As of December 31, 2025 INSW’s fleet totaled 74 vessels, of which 66 were owned and 8 were chartered in.

(1) Includes bareboat charters, but excludes vessels chartered in where the duration of the charter was one year or less at inception.

Reconciliation to Non-GAAP Financial Information

The Company believes that, in addition to conventional measures prepared in accordance with GAAP, the following non-GAAP measures may provide certain investors with additional information that will better enable them to evaluate the Company’s performance. Accordingly, these non-GAAP measures are intended to provide supplemental information, and should not be considered in isolation or as a substitute for measures of performance prepared with GAAP.

Adjusted Net Income

Adjusted net income consists of net income adjusted for the impact of certain items that we do not consider indicative of our ongoing operating performance. This measure does not represent or substitute net income or any other financial item that is determined in accordance with GAAP. While adjusted net income is frequently used as a measure of operating results and performance, it may not be necessarily comparable with other similarly titled captions of other companies due to differences in methods of calculation. The following table reconciles net income, as reflected in the condensed consolidated statement of operations, to adjusted net income:

EBITDA and Adjusted EBITDA

EBITDA represents net income before interest expense, income taxes, and depreciation and amortization expense. Adjusted EBITDA consists of EBITDA adjusted for the impact of certain items that we do not consider indicative of our ongoing operating performance. EBITDA and Adjusted EBITDA do not represent, and should not be a substitute for, net income or cash flows from operations as determined in accordance with GAAP. Some of the limitations are: (i) EBITDA and Adjusted EBITDA do not reflect our cash expenditures, or future requirements for capital expenditures or contractual commitments; (ii) EBITDA and Adjusted EBITDA do not reflect changes in, or cash requirements for, our working capital needs; and (iii) EBITDA and Adjusted EBITDA do not reflect the significant interest expense, or the cash requirements necessary to service interest or principal payments, on our debt. While EBITDA and Adjusted EBITDA are frequently used as a measure of operating results and performance, neither of them is necessarily comparable to other similarly titled captions of other companies due to differences in methods of calculation. The following table reconciles net income as reflected in the condensed consolidated statements of operations, to EBITDA and Adjusted EBITDA:

Total Cash

Time Charter Equivalent (TCE) Revenues

Consistent with general practice in the shipping industry, the Company uses TCE revenues, which represents shipping revenues less voyage expenses, as a measure to compare revenue generated from a voyage charter to revenue generated from a time charter. Time charter equivalent revenues, a non-GAAP measure, provides additional meaningful information in conjunction with shipping revenues, the most directly comparable GAAP measure, because it assists Company management in making decisions regarding the deployment and use of its vessels and in evaluating their financial performance. Reconciliation of TCE revenues of the segments to shipping revenues as reported in the condensed consolidated statements of operations follow: