X0306 4 2017-08-23 0000075208 OVERSEAS SHIPHOLDING GROUP INC OSG 0001616545 Norton Samuel H 58 NE 44TH STREET MIAMI FL 33133 1 1 0 0 President and CEO Class A Common Stock, par value $.01 per share 2017-08-23 4 P 0 20000 1.9989 A 125531 D Class A Common Stock, par value $.01 per share 2017-08-24 4 P 0 2800 2.0189 A 128331 D Class A Common Stock, par value $.01 per share 2017-08-25 4 P 0 10000 2.0462 A 138331 D The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.99 to $2.00 inclusive. The reporting person undertakes to provide to Overseas Shipholding Group, Inc., any security holder of Overseas Shipholding Group, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (1) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.01 to $2.02 inclusive. The reporting person undertakes to provide to Overseas Shipholding Group, Inc., any security holder of Overseas Shipholding Group, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.02 to $2.05 inclusive. The reporting person undertakes to provide to Overseas Shipholding Group, Inc., any security holder of Overseas Shipholding Group, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) to this Form 4. /s/ Samuel H. Norton by Deanna Marshall, Attorney-in-fact 2017-08-25