| Filed On | Filing |
|---|---|
| 17 Oct 2003 | FORM S-3 |
| 07 Jun 2002 | ASPEN TECHNOLOGY, INC. |
| 03 Jun 2002 | ASPEN TECHNOLOGY, INC. |
| 26 Nov 2001 | ASPEN TECHNOLOGY, INC. |
| 15 Jun 2001 | ASPEN TECHNOLOGY,INC |
| 07 Nov 2000 | ASPEN TECHNOLOGY, INC. |
| 10 Oct 2000 | ASPEN TECHNOLOGY, INC. |
| 08 Jun 1999 | ASPEN TECHNOLOGY, INC. |
| 11 Dec 1998 | ASPEN TECHNOLOGY, INC. |
| 16 Sep 1998 | ASPEN TECHNOLOGY, INC. |
| 15 Sep 1998 | ASPEN TECHNOLOGY |
| 10 Aug 1998 | ASPEN TECHNOLOGY, INC. |
| 19 Jun 1998 | ASPEN TECHNOLOGY, INC. |
| 04 Nov 1997 | ASPEN TECHNOLOGY, INC. |
| 18 Feb 1997 | ASPEN TECHNOLOGY, INC. |
| 29 Jan 1997 | ASPEN TECHNOLOGY, INC. |
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