X0201 4 2004-04-06 0 0000886235 ASPECT MEDICAL SYSTEMS INC ASPM 0001222948 EAGLE J BRECKENRIDGE C/O ASPECT MEDICAL SYSTEMS, INC., 141 NEEDHAM STREET NEWTON MA 02464 1 1 0 0 Chairman of the Board Common Stock 2004-04-06 4 S 0 1000.0000 15.9500 D 165640.0000 D Common Stock 2004-04-07 4 S 0 1000.0000 15.6800 D 164640.0000 D Common Stock 35000.0000 I By Trust The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 18, 2004 These shares are held by a trust for the benefit of John Warren Eagle, the trustee of which is Jeanne Warren Eagle. Mr. Eagle disclaims beneficial ownership of these securities indicated and the reporting herein of such securities shall not be construed as an admission that Mr. Eagle is the beneficial owner of any such securities for the purposes of Section 16 of Securities and Exchange Act of 1934, as amended, or for any other purpose. J. Neal Armstrong (Attorney in fact for J. Breckenridge Eagle) 2004-04-08