X0303 4 2010-10-18 0 0001478085 Graham Packaging Co Inc. GRM 0001483061 Graham Donald C. 1420 SIXTH AVENUE YORK PA 17403 0 0 1 0 0001482741 GPC Investments, LLC 1420 SIXTH AVENUE YORK PA 17403 0 0 1 0 Common Stock 2010-10-18 4 S 0 5000 12.2532 D 1238718 I See Notes 1, 2, 3, and 4. Common Stock 2010-10-20 4 S 0 4599 12.30 D 1234119 I See Notes 1, 2, 3, and 4. Donald C. Graham ("Mr. Graham") is the sole member of GPC Investments, LLC ("GPC Investments"), he is the sole member of Graham Capital Company ("GCC"), and he is the majority shareholder of Graham Engineering Corporation ("GEC"). GPC Investments is the sole general partner of Graham Alternative Investment Partners I ("GAIP"). On October 18, 2010, GAIP sold 5,000 shares of common stock of the issuer ("Shares") for $12.2532 per Share on the open market. On October 20, 2010, GAIP sold 4,599 Shares for $12.30 per Share on the open market. At the conclusion of the October 18 and 20, 2010 transactions, Mr. Graham was the beneficial owner of 1,234,119 Shares, 479,219 of which were directly owned by GAIP, 452,940 of which were directly owned by GCC, and 301,960 of which were directly owned by GEC. At the conclusion of the October 18 and 20, 2010 transactions, GPC Investments was the beneficial owner of 479,219 Shares, all of which were directly owned by GAIP. The reported securities are directly owned by GAIP, GCC and/or GEC. Mr. Graham and GPC Investments disclaim beneficial ownership of the reported securities except to the extent of their respective pecuniary interests therein. The price in column 4 is a weighted average. The prices actually received on sales made on October 18, 2010, ranged from $12.25 to $12.28. For all transactions reported in this Form 4 utilizing a weighted average price, the reporting person undertakes to provide upon request by the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each seperate price within the range. Paul L. Rudy III, Attorney-in-Fact of Donald C. Graham 2010-10-20 Paul L. Rudy III, VP Finance, Secretary, and Treasurer of GPC Investments, LLC 2010-10-20