X0303 4 2010-05-19 0 0000075208 OVERSEAS SHIPHOLDING GROUP INC OSG 0001349800 Mozdean Robert R 666 THIRD AVENUE 5TH FLOOR NEW YORK NY 10017 0 1 0 0 Head Worldwide Human Resources Common Stock, par value $1.00 per share 2010-05-19 4 J 0 1472 39.40 A 1472 I (1) Common Stock, par value $1.00 per share 2010-06-08 4 J 0 240 36.27 D 1232 I (2) Common Stock, par value $1.00 per share 2010-12-31 4 J 0 30 A 1262 I (3) Common Stock, par value $1.00 per share 181 I (4) Common Stock, par value $1.00 per share 8266 D The reporting person purchased these 1,472 shares of common stock in the OSG Ship Management, Inc. Savings Plan (the "Savings Plan"). The reporting person sold these 240 shares of common stock in the Savings Plan. The reporting person acquired these 30 shares of common stock in the Savings Plan through a dividend reimbursement plan which operates on substantially the same terms for the plan participants. The reporting person indirectly owns these 181 shares of common stock through the Overseas Shipholding Group, Inc. 2000 Employee Stock Purchase Plan as of December 31, 2010. Of these 8,266 shares of common stock, 4,195 shares are subject to vesting restrictions as of January 10, 2011. /s/James I. Edelson, Attorney-in-Fact, pursuant to power of attorney previously filed 2011-01-13