| Filed On | Filing |
|---|---|
| 18 Aug 2021 | 10-K |
| 09 Dec 2020 | 10-K |
| 10 Sep 2019 | 10-K |
| 08 Aug 2018 | 10-K |
| 10 Aug 2017 | 10-K |
| 11 Aug 2016 | 10-K |
| 13 Aug 2015 | 10-K |
| 13 Aug 2014 | 10-K |
| 15 Aug 2013 | 10-K |
| 21 Aug 2012 | ASPEN TECHNOLOGY 10-K 6-30-2012 |
| 23 Aug 2011 | 10-K |
| 02 Sep 2010 | 10-K |
| 09 Nov 2009 | 10-K |
| 30 Jun 2009 | 10-K |
| 11 Apr 2008 | 10-K |
| 28 Sep 2006 | ANNUAL REPORT PURSUANT TO SECTION 13 AND 15(D) |
| 13 Sep 2005 | 10-K |
| 13 Sep 2004 | FORM 10-K |
| 29 Sep 2003 | FORM 10-K |
| 30 Sep 2002 | ASPEN TECHNOLOGY FORM 10-K |
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