X0202 4 2006-08-21 0 0000813347 KOMAG INC /DE/ KOMG 0001229793 BRAHE PAUL A THREE HARBOR DRIVE SUITE 204 SAUSALITO CA 94965 1 0 0 0 Common Stock 2006-08-21 4 M 0 624 6.48 A 7525 D Common Stock 2006-08-21 4 M 0 312 13.16 A 7837 D Common Stock 2006-08-21 4 M 0 312 18.85 A 8149 D Common Stock 2006-08-21 4 S 0 132 37.27 D 8017 D Common Stock 2006-08-21 4 S 0 124 37.30 D 7893 D Common Stock 2006-08-21 4 S 0 124 37.42 D 7769 D Common Stock 2006-08-21 4 S 0 248 37.45 D 7521 D Common Stock 2006-08-21 4 S 0 124 37.51 D 7397 D Common Stock 2006-08-21 4 S 0 124 37.52 D 7273 D Common Stock 2006-08-21 4 S 0 124 37.54 D 7149 D Common Stock 2006-08-21 4 S 0 124 37.55 D 7025 D Common Stock 2006-08-21 4 S 0 124 37.61 D 6901 D Non-Qualified Stock Option (right to buy) 6.48 2006-08-21 4 M 0 624 0.00 D 2013-03-17 Common Stock 624 420 D Non-Qualified Stock Option (right to buy) 13.16 2006-08-21 4 M 0 312 0.00 D 2013-07-25 Common Stock 312 210 D Non-Qualified Stock Option (right to buy) 18.85 2006-08-21 4 M 0 312 0.00 D 2014-03-15 Common Stock 312 1981 D This transaction was executed pursuant to a 10b5-1 plan. The Reporting Person exercised 624 shares of the 10,000 share option granted on 03/17/2003, of which 2,500 shares subject to the Option shall vest on 10/07/2003 and 1/36 of the remaining 7,500 shares subject to the Option shall vest on the 7th of each month thereafter, subject to the Optionee continuing to be a Participant of Komag Incorporated Amended and Restated 2002 Qualified Stock Plan on such dates. The Reporting Person exercised 312 shares of the 5,000 share option granted on 07/25/2003, of which 1,250 shares subject to the Option shall vest on 10/07/2003 and 1/36 of the remaining 3,750 shares subject to the Option shall vest on the 7th of each month thereafter, subject to the Optionee continuing to be a Participant of Komag Incorporated Amended and Restated 2002 Qualified Stock Plan on such dates. The Reporting Person exercised 312 shares of the 5,000 share option granted on 03/15/2004, of which 1,250 shares subject to the Option shall vest on 03/15/2005 and 1/36 of the remaining 3,750 shares subject to the Option shall vest on the 15th of each month thereafter, subject to the Optionee continuing to be a Participant of Komag Incorporated Amended and Restated 2002 Qualified Stock Plan on such dates. /s/ Jan Schwartz, Attorney-in-fact for Paul A. Brahe 2006-08-21