X0201 4 2004-03-29 0 0001010397 PHYSIOMETRIX INC PHYX 0001283570 WILLIAMS JOHN ANTHONY 101 BILLERICA AVE. NORTH BILLERICA MA 01862 1 1 0 0 President and CEO Common Stock 2004-03-29 4 M 0 205300 0.0375 A 205300 D Employee Stock Option (right to buy) 0.0375 2004-03-29 4 M 0 205300 0 D 1994-03-30 2004-03-30 Common Stock 205300 0 D Employee Option to purchase Common Stock (right to buy) One eighth (1/8th) of the shares vested after six (6) months and an additional one forty-eighth (1/48th) of the shares vested on the same day of each calendar month thereafter until all the shares were fully vested. This option expired on March 30, 2004 and will expire as to any remaining shares subject to the option as of that date. Exclude various option grants to Reporting Person previously reported. JOHN ANTHONY WILLIAMS 2004-03-31