| Filed On | Filing |
|---|---|
| 20 Jun 2003 | PRE 14A |
| 02 Jun 2003 | SCHEDULE 14A |
| 18 Oct 2001 | ASPEN TECHNOLOGY, INC. |
| 31 Oct 2000 | ASPEN TECHNOLOGY, INC. |
| 28 Oct 1999 | ASPEN TECHNOLOGY |
| 28 Oct 1997 | ASPEN TECHNOLOGY, INC. |
| 13 Nov 1996 | ASPEN TECHNOLOGY INC. PRELIMINARY SCHEDULE 14A |
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