X0303 4 2010-06-08 0 0000709804 ADAPTEC INC ADPT 0001314205 Dotz Mary 691 SOUTH MILPITAS BLVD. MILPITAS CA 95035 0 1 0 0 Chief Financial Officer Common Stock 2010-06-08 4 F 0 3820 3.03 D 25952 D Common Stock 2010-06-08 4 F 0 16501 3.03 D 9451 D Common Stock 2010-06-09 4 M 0 26933 2.86 A 36384 D Common Stock 2010-06-09 4 S 0 26933 3.03 D 9451 D Common Stock 2010-06-09 4 M 0 113067 2.86 A 122518 D Common Stock 2010-06-09 4 S 0 113067 3.03 D 9451 D Common Stock 2010-06-09 4 M 0 104326 2.94 A 113777 D Common Stock 2010-06-09 4 S 0 104326 3.03 D 9451 D Common Stock 2010-06-09 4 M 0 20674 2.94 A 30125 D Common Stock 2010-06-09 4 S 0 20674 3.03 D 9451 D Common Stock 2010-06-09 4 M 0 45000 0 A 54451 D Common Stock 2010-06-09 4 S 0 54451 3.03 D 0 D Incentive Stock Option (right to buy) 2.86 2010-06-09 4 M 0 26933 0 D 2016-08-03 Common Stock 26933 0 D Non-Qualified Stock Option (right to buy) 2.86 2010-06-09 4 M 0 113067 0 D 2016-08-03 Common Stock 113067 0 D Incentive Stock Option (right to buy) 2.94 2010-06-09 4 M 0 104326 0 D 2015-03-31 Common Stock 104326 0 D Non-Qualified Stock Option (right to buy) 2.94 2010-06-09 4 M 0 20674 0 D 2015-03-31 Common Stock 20674 0 D Restricted Stock Units 0 2010-06-09 4 M 0 45000 0 D Common Stock 45000 0 D Represents shares that were automatically withheld to cover tax withholding obligations. A total of 140,000 stock options were granted on August 3, 2009. The aggregate of these options vest at the rate of 8.33% of the total option shares at the end of each three month period, such that the total option shares will be fully vested on August 3, 2012. The Company accelerated 100% of the remaining unvested stock options on June 8, 2010. A total of 125,000 stock options were granted on March 31, 2008. The aggregate of these options vested at the rate of 25% of the total option shares on March 31, 2009 and an additional 8.33% of the total option shares vest at the end of each three month period thereafter, such that the total option shares will be fully vested on March 31, 2012. The Company accelerated 100% of the remaining unvested stock options on June 8, 2010. Represents a Restricted Stock Unit for shares of common stock that vests, based on certain performance criteria, over a period of 36 months. The Company accelerated 100% of the remaining unvested restricted stock units on June 8, 2010, which was originally granted on April 1, 2009. Each Restricted Stock Unit represents a contingent right to receive one share of Adaptec, Inc. common stock. Not Applicable. /s/ Mary Dotz 2010-06-10