MCQUILLIN DAVID L 4

4 · ASPEN TECHNOLOGY INC /DE/ · Filed Sep 3, 2004

Form 4

Period: 2004-09-01

DirectorPresident and CEO

Transactions

Sale
Common Stock
2004-09-01$6.00/sh−19,184$115,104→ 0 total
Exercise/Conversion
Option to purchase Common Stock
2004-09-01$2.98/sh−3,125$9,313→ 0 total
Exercise: $2.98Exp: 2012-08-19→ Common Stock (3,125 underlying)
Sale
Common Stock
2004-09-01$6.00/sh−59,491$356,946→ 0 total
Exercise/Conversion
Option to purchase common stock
2004-09-01$2.75/sh−59,491$163,600→ 0 total
Exercise: $2.75Exp: 2013-08-18→ Common Stock (59,491 underlying)
Exercise/Conversion
Common Stock
2004-09-01$2.98/sh+3,125$9,313→ 3,125 total
Exercise/Conversion
Option to purchase Common Stock
2004-09-01$2.95/sh−19,184$56,593→ 0 total
Exercise: $2.95Exp: 2013-02-11→ Common Stock (19,184 underlying)
Exercise/Conversion
Common Stock
2004-09-01$2.75/sh+59,491$163,600→ 59,491 total
Sale
Common Stock
2004-09-01$6.00/sh−3,125$18,750→ 0 total
Exercise/Conversion
Common Stock
2004-09-01$2.95/sh+19,184$56,593→ 19,184 total

Footnotes (2)

[F1]These shares were sold pursuant to a written trading plan adopted by Mr. McQuillin pursuant to Rule 10b5-1 on March 14, 2004.
[F2]The option vests in sixteen equal quarterly installments beginning with the first full quarter following the date of the grant.

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