X0202 4 2005-10-26 0 0000933974 BROOKS AUTOMATION INC BRKS 0001182721 LEPOFSKY ROBERT C/O BROOKS AUTOMATION, INC. 15 ELIZABETH DRIVE CHELMSFORD MA 01824 1 0 0 0 Common Stock 2005-10-26 4 A 0 283131 A 283131 D Common Stock 2005-10-26 4 A 0 2170 A 2170 I By 401(k) Plan Common Stock 2005-10-26 4 A 0 44400 A 44400 I By Trust Stock Option (Right to Buy) 18.75 2005-10-26 4 A 0 111000 A 2005-12-31 Common Stock 111000 111000 D Stock Option (Right to Buy) 12.69 2005-10-26 4 A 0 25000 A 2012-10-26 Common Stock 25000 136000 D Received in exhange for 255,073 shares of Helix Technology Corporation common stock in connection with the merger of Helix Technology Corporation and a wholly-owned subsidiary of Brooks Automation, Inc. (the "Merger"). On the effective date of the Merger, the closing price of Helix Technology Corporation's common stock was $13.96 per share, and the closing price of Brooks Automation, Inc.'s common stock was $12.69 per share. Received in the Merger in exchange for 1,955 shares of Helix Technology Corporation common stock. Received in the Merger in exchange for 40,000 shares of Helix Technology Corporation common stock. The reporting person disclaims beneficial ownership of these shares. Received in the Merger in exchange for a stock option to acquire 100,000 shares of Helix Technology Corporation common stock for $20.8125 per share. Received in the Merger in exchange for a stock option to acquire Helix Technology Corporation common stock granted on February 11, 1999. This option becomes exercisable with respect to 25% of such shares subject to the option on each anniversary of the date of grant. This option becomes exercisable with respect to 5,000 shares subject to the option on each anniversary of the date of grant, beginning on the first anniversary, such that the option becomes fully exercisable as of the fifth anniversary of the date of grant. No amount was paid upon grant of the option. The reporting person will pay for the shares upon exercise of the option pursuant to the price listed in Column 2. /s/ Lynda M. Avallone as Attorney-in-Fact for Robert J. Lepofsky 2005-10-28