Overseas Shipholding Group to Announce Fourth Quarter and Full Year 2017 Results on March 9, 2018

Overseas Shipholding Group, Inc. (NYSE: OSG) (the “Company” or “OSG”) announced today that it plans to release fourth quarter and full year 2017 results before market opens on Friday, March 9, 2018.

The Company will host a conference call to discuss its fourth quarter and full year 2017 results at 9:00 a.m. Eastern Time (“ET”) on Friday, March 9, 2018.

To access the call, participants should dial [phone] for domestic callers and [phone] for international callers. 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 http://www.osg.com/.

An audio replay of the conference call will be available starting at 11:00 a.m. ET on Friday, March 9, 2018 through 10:59 p.m. ET on Friday, March 16, 2018 by dialing [phone] for domestic callers and [phone] for international callers, and entering Access Code 10117595.

About Overseas Shipholding Group, Inc

Overseas Shipholding Group, Inc. (NYSE: OSG) is a publicly traded tanker 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 23-vessel U.S. Flag fleet consists of seven ATBs, two lightering ATBs, three shuttle tankers, nine MR tankers, and two non-Jones Act MR tankers that participate in the U.S. Maritime Security Program. 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.

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Overseas Shipholding Group, Inc.Investor Relations & Media Contact:Susan Allan, [e-mail]