X0202 3 2007-06-11 0 0001383183 CombiMatrix Corp CBMX 0001026505 AKIN THOMAS B 6500 HARBOUR HEIGHTS PARKWAY, SUITE 303 MUKILTEO, WA 98275 1 0 0 0 Common Stock 2007-08-15 2007-08-15 Acacia Research - CombiMatrix Common Stock 701228 D Common Stock 2007-08-15 2007-08-15 Acacia Research - CombiMatrix Common Stock 1434184 I See Note Warrants (right to buy) .55 2012-05-03 Acacia Research - CombiMatrix Common Stock 1050000 D Warrants (right to buy) .55 2012-05-03 Acacia Research - CombiMatrix Common Stock 2100000 I See Note Stock Option (right to buy) 9.00 CombiMatrix Corporation Common Stock 25000 D Stock Option (right to buy) 8.8486 Acacia Research - CombiMatrix Common Stock 7368 D Stock Option (right to buy) 6.0635 Acacia Research - CombiMatrix Common Stock 7368 D Stock Option (right to buy) 12.00 Acacia Research - CombiMatrix Common Stock 30000 D Stock Option (right to buy) 3.65 Acacia Research - CombiMatrix Common Stock 15000 D Stock Option (right to buy) 3.56 Acacia Research - CombiMatrix Common Stock 15000 D Stock Option (right to buy) 3.87 Acacia Research - CombiMatrix Common Stock 15000 D Stock Option (right to buy) 1.372 Acacia Research - CombiMatrix Common Stock 15000 D Stock Option (right to buy) .84 Acacia Research - CombiMatrix Common Stock 3750 D Stock Option (right to buy) .84 2007-07-03 Acacia Research - CombiMatrix Common Stock 3750 D Stock Option (right to buy) .84 2007-08-15 Acacia Research - CombiMatrix Common Stock 7500 D The number of shares reported are the number of shares of Acacia Research-CombiMatrix common stock currently held, which will be automatically redeemed on August 15, 2007, for shares of common stock of CombiMatrix Corporation. Every ten (10) shares of Acacia Research-CombiMatrix common stock will be redeemed for one (1) share of CombiMatrix Corporation common stock. Held by Talkot Fund, L.P. Mr. Akin serves as managing general partner of Talkot Fund, L.P. Mr. Akin disclaims beneficial ownership in the shares held by Talkot Fund, L.P. except to the extent of his pecuniary interest therein. The warrants reported are for the purchase of Acacia Research-CombiMatrix common stock, which if exercised prior to the redemption date on August 15, 2007, would be redeemed for CombiMatrix Corporation common stock at a rate of one (1) share of CombiMatrix Corporation Common Stock for every ten (10) shares of Acacia Research-CombiMatrix common stock. The holder of the warrant or option may exercise it at any time. The options reported are for the purchase of Acacia Research-CombiMatrix common stock, which if exercised prior to the redemption date on August 15, 2007, would be redeemed for CombiMatrix Corporation common stock at a rate of one (1) share of CombiMatrix Corporation Common Stock for every ten (10) shares of Acacia Research-CombiMatrix common stock. If the options are not exercised before August 15, 2007, they will be terminated as a result of the redemption. /s/ Thomas Akin 2007-06-18