Feb 28, 2023

Overseas Shipholding Group to Announce Fourth Quarter and Full Year 2022 Results on March 9, 2023

TAMPA, Fla. –
Overseas Shipholding Group, Inc. (NYSE: OSG) (the “Company” or “OSG”) announced today that it plans to release fourth quarter results before market opens on Thursday, March 9, 2023.

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, two of which 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.

Investor Relations & Media Contact:

Susan Allan, Overseas Shipholding Group, Inc.

(813) 209-0620

sallan@osg.com