ASPEN TECHNOLOGY INC /DE/


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Current Reports
8-K
2020-01-29
EX-99.1
8-K
2020-01-15
EX-99.1
8-K
2019-12-23
EX-10.1
8-K
2019-12-12
 

Beneficial Ownership Report
13G/A
2020-02-14
13G/A
2020-02-05

Recent Insider activity

Subsidiaries
EX-21.1
2019-09-10
EX-21.1
2018-08-08
EX-21.1
2017-08-10
EX-21.1
2016-08-11
EX-21.1
2015-08-13
EX-21.1
2014-08-13
EX-21.1
2013-08-15
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