X0303 4 2010-02-24 0 0001130258 ACME PACKET INC APKT 0001376831 ORY ROBERT G C/O ACME PACKET, INC. 71 THIRD AVENUE BURLINGTON MA 01803 1 1 0 0 Secretary & Asst Treasurer Common Stock 2010-02-24 4 S 0 5000 16.0706 D 530230 D Common Stock 2010-02-24 4 S 0 7143 16.0706 D 1697429 I By The Ory Family Trust Common Stock 2010-02-24 4 S 0 2500 16.0706 D 250585 I By Spouse Sales were made pursuant to a 10b5-1 plan entered into by the reporting person on November 20, 2009. This price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $16.07 to $16.08. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Sales made by The Ory Family Trust were made pursuant to a 10b5-1 plan entered into by the reporting person, as trustee on November 20, 2009. The reporting person is the trustee of The Ory Family Trust, established for the benefit of his grandchildren, and the reporting person exercises shared voting and investment control over these shares. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for the purposes of Section 16 or for any other purpose. Sales made by the reporting person's spouse were made pursuant to a 10b5-1 plan entered into by the reporting person's spouse on November 20, 2009. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for the purposes of Section 16 or for any other purpose. /s/ Peter J. Minihane as attorney-in-fact 2010-02-25