Exhibit 99.1

OVERSEAS SHIPHOLDING GROUP REPORTS

FOURTH QUARTER AND FULL YEAR 2022 RESULTS

Tampa, FL – March 9, 2023 – Overseas Shipholding Group, Inc. (NYSE: OSG) (the “Company” or “OSG”), a leading provider of energy transportation services for crude oil and petroleum products in the U.S. Flag markets, today reported results for the fourth quarter and full year 2022.

Sam Norton, President and CEO, offered the following comments on the quarterly and full year results announced today: “Operational and financial performance during the final quarter of 2022 exceeded our expectations and allowed OSG to deliver full year results for both time charter equivalent earnings and adjusted EBITDA well above the guidance provided in early November. Strong contributions during the quarter from our lightering and non-Jones Act assets were instrumental in achieving this performance. We are particularly gratified by the full year adjusted EBITDA figure, which at $142.8 million reflected an over 200% improvement over 2021 adjusted EBITDA; this while completing a heavy drydock schedule during the year and returning three MR tankers upon expiry of their leases in early December. Year-end cash balances, including investments in treasury securities, came in squarely within the guidance range provided in November at $93.5 million.”

Mr. Norton added, “Improving market conditions have resulted in OSG achieving more stability in its financial profile and greater visibility of forward cashflows to an extent not seen for many years. All Jones Act assets are fixed under time charters or contracts of affreightment for the balance of 2023, and nearly 80% of 2024 available days are also fully covered at attractive rates. The business environment for OSG has shifted away from the defensive posture that has characterized much of the past three years. We can now look forward to evaluating real opportunities to extend and expand the cash generating capabilities of our unique franchise while continuing to consider means to utilize surplus cashflow to reduce leverage and drive improving share price performance.”

^{A, B, C} Reconciliations of these non-GAAP financial measures are included in the financial tables attached to this press release starting on Page 8.

Full Year 2022 Results

Shipping revenues were $466.8 million for 2022, up 30.0% compared with 2021. TCE revenues for 2022 were $426.3 million, an increase of $133.7 million, or 45.7%, compared with 2021. The increases were primarily a result of a 1,953-day decrease in layup days, as we had fewer vessels in layup during 2022 compared to 2021. Additionally, the increase in revenues resulted from an increase in average daily rates earned by our fleet and seven Military Sealift Command voyages, which were longer international voyages, during 2022 compared to five such voyages during the same period in 2021. The increase was partially offset by (a) fewer vessels in our fleet, as we sold one MR tanker, the Overseas Gulf Coast, in June 2021 and returned three conventional tankers leased from American Shipping Company in early to mid-December 2022, (b) a 38-day increase in scheduled drydocking, and (c) a 15-day increase in repair days.

Operating income for 2022 was $63.2 million, compared to an operating loss of $29.1 million for 2021.

Net income for 2022 was $26.6 million, or $0.29 per diluted share, compared with net loss of $46.3 million, or $(0.51) per diluted share, for 2021.

Adjusted EBITDA was $142.8 million for 2022, an increase of $97.7 million compared with 2021.

Fourth Quarter 2022 Results

Shipping revenues were $121.8 million for the fourth quarter of 2022, an increase of $26.3 million, or 27.5%, compared to the fourth quarter of 2021. TCE revenues were $114.1 million for the fourth quarter of 2022, an increase of $34.1 million, or 42.6%, from the fourth quarter of 2021. The increases primarily resulted from a 430-day decrease in layup days, as we had no vessels in layup during the fourth quarter of 2022. During the fourth quarter of 2021, we had five vessels in layup for most of the quarter, with only one of five vessels coming out of layup during the quarter. Additionally, the increases resulted from (a) an increase in average daily rates earned by our fleet, (b) a 40-day decrease in drydock days, and (c) a 2-day decrease in repair days. The increases were partially offset by a decrease related to fewer vessels in our fleet, due to the return in early to mid-December 2022 of three conventional Jones Act tankers leased from American Shipping Company, only one of which was in layup during the fourth quarter of 2021.

Operating income for the fourth quarter of 2022 was $20.4 million compared to an operating loss of $1.9 million for the fourth quarter of 2021. Net income for the fourth quarter of 2022 was $10.1 million, or $0.11 per diluted share, compared with a net loss of $3.7 million, or $(0.03) per diluted share, for the fourth quarter of 2021.

Adjusted EBITDA was $43.6 million for the 2022 fourth quarter, an increase of $27.0 million compared with the fourth quarter of 2021, driven primarily by the increase in TCE revenues.

Conference Call

The Company will host a conference call to discuss its fourth quarter and full year 2022 results at 9:30 a.m. Eastern Time (“ET”) on Thursday, March 9, 2023.

To access the call, participants should dial (844) 200-6205 for domestic callers and (929) 526-1599 for international callers and enter Access Code 076865. 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 www.osg.com.

An audio replay of the conference call will be available for one week starting at 11:30 a.m. ET on Thursday, March 9, 2023, by dialing (866) 813-9403 for domestic callers and (929) 458-6194 for international callers and entering Access Code 798578.

About Overseas Shipholding Group, Inc.

Overseas Shipholding Group, Inc. (NYSE:OSG) is a publicly traded company providing energy transportation services for crude oil and petroleum products in the U.S. Flag markets. OSG is a major operator of tankers and ATBs in the Jones Act industry. OSG’s 21 vessel U.S. Flag fleet consists of three Suezmax crude oil tankers doing business in Alaska, two conventional ATBs, two lightering ATBs, three shuttle tankers, seven MR tankers, and three non-Jones Act MR tankers, which two of the three participate in the U.S. Maritime Security Program, and one tanker in cold layup.

OSG is committed to setting high standards of excellence for its quality, safety and environmental programs. OSG is recognized as one of the world’s most customer-focused marine transportation companies and is headquartered in Tampa, FL. More information is available at www.osg.com.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. In addition, the Company may make or approve certain forward-looking statements in future filings with the Securities and Exchange Commission (SEC), in press releases, or in oral or written presentations by representatives of the Company. All statements other than statements of historical fact should be considered forward-looking statements. These matters or statements may relate to our prospects, supply and demand for vessels in the markets in which we operate and the impact on market rates and vessel earnings, the continued stability of our niche businesses, the impact of our time charter contracts on our future financial performance, and external events including geopolitical conflicts such as the Russia/Ukraine conflict. Forward-looking statements are based on our current plans, estimates and projections, and are subject to change based on a number of factors. COVID-19 has had, and will continue to have, a profound impact on our workforce and many other aspects of our business and industry. Investors should carefully consider the risk factors outlined in more detail in our filings with the SEC. We do not assume any obligation to update or revise any forward-looking statements except as may be required by applicable law. Forward-looking statements and written and oral forward-looking statements attributable to us or our representatives after the date of this press release are qualified in their entirety by the cautionary statements contained in this paragraph and in other reports previously or hereafter filed by us with the SEC.

Investor Relations & Media Contact:

Susan Allan, Overseas Shipholding Group, Inc.

(813) 209-0620

sallan@osg.com

Consolidated Statements of Operations

($ in thousands, except per share amounts)

Consolidated Balance Sheets

($ in thousands)

Consolidated Statements of Cash Flows

($ in thousands)

Spot and Fixed TCE Rates Achieved and Revenue Days

The following tables provide 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, 2022 and the comparable periods of 2021. Revenue days in the quarter ended December 31, 2022 totaled 2,023 compared with 1,597 in the prior year quarter. Revenue days in the fiscal year ended December 31, 2022 totaled 7,739 compared with 6,064 in the prior year. A summary fleet list by vessel class can be found later in this press release.

(a) Excludes one Alaska vessel currently in layup.

Fleet Information

As of December 31, 2022, OSG’s operating fleet consisted of 21 vessels, 12 of which were owned, with the remaining vessels chartered-in. Vessels chartered-in are on Bareboat Charters.

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 provide 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.

(A) 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. TCE 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 consolidated statements of operations follows:

Vessel Operating Contribution

Vessel operating contribution, a non-GAAP measure, is TCE revenues minus vessel expenses and charter hire expenses.

(B) EBITDA and Adjusted EBITDA

EBITDA represents net income/(loss) before interest expense, income taxes and depreciation and amortization expense. Adjusted EBITDA consists of EBITDA adjusted to exclude amortization classified in charter hire expenses, interest expense classified in charter hire expenses, loss/(gain) on disposal of vessels and other property, including impairments, net, non-cash stock based compensation expense and loss on repurchases and extinguishment of debt and the impact of other 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/(loss) 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 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 measures used by other companies due to differences in methods of calculation. The following table reconciles net income/(loss) as reflected in the consolidated statements of operations, to EBITDA and Adjusted EBITDA.

(C) Total Cash and Investments