| SC 13G/A | 2023-02-14 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | ASPENTECH Corp | 3,011,234 | 4.7% | EDGAR |
| SC 13G/A | 2022-06-09 | BlackRock Inc. | ASPENTECH Corp | 0 | 0.0% | EDGAR |
| SC 13G | 2022-05-09 | BlackRock Inc. | ASPEN TECHNOLOGY INC /DE/ | 6,664,554 | 10.0% | EDGAR |
| SC 13G/A | 2022-02-14 | BlueSpruce Investments, LP | ASPEN TECHNOLOGY INC /DE/ | 0 | 0.0% | EDGAR |
| SC 13G/A | 2022-02-14 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | ASPEN TECHNOLOGY INC /DE/ | 6,710,218 | 10.0% | EDGAR |
| SC 13G/A | 2022-02-09 | VANGUARD GROUP INC | ASPEN TECHNOLOGY INC /DE/ | 6,284,669 | 9.4% | EDGAR |
| SC 13G/A | 2022-02-01 | BlackRock Inc. | ASPEN TECHNOLOGY INC /DE/ | 6,237,913 | 9.3% | EDGAR |
| SC 13G/A | 2021-12-10 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | ASPEN TECHNOLOGY INC /DE/ | 6,750,515 | 10.1% | EDGAR |
| SC 13G/A | 2021-03-10 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | ASPEN TECHNOLOGY INC /DE/ | 6,787,809 | 10.0% | EDGAR |
| SC 13G/A | 2021-02-12 | WADDELL & REED FINANCIAL INC | ASPEN TECHNOLOGY INC /DE/ | 3,337,946 | 4.9% | EDGAR |
| SC 13G/A | 2021-02-12 | BlueSpruce Investments, LP | ASPEN TECHNOLOGY INC /DE/ | 896,965 | 1.3% | EDGAR |
| SC 13G/A | 2021-02-11 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | ASPEN TECHNOLOGY INC /DE/ | 6,666,672 | 9.8% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | ASPEN TECHNOLOGY INC /DE/ | 6,120,595 | 9.0% | EDGAR |
| SC 13G/A | 2021-01-29 | BlackRock Inc. | ASPEN TECHNOLOGY INC /DE/ | 3,681,516 | 5.4% | EDGAR |
| SC 13G/A | 2020-12-10 | FMR LLC | ASPEN TECHNOLOGY INC /DE/ | 3,260,416 | 4.8% | EDGAR |
| SC 13G | 2020-11-09 | BlueSpruce Investments, LP | ASPEN TECHNOLOGY INC /DE/ | 892,765 | 1.3% | EDGAR |
| SC 13G | 2020-05-11 | FMR LLC | ASPEN TECHNOLOGY INC /DE/ | 6,963,381 | 10.3% | EDGAR |
| SC 13G/A | 2020-02-14 | WADDELL & REED FINANCIAL INC | ASPEN TECHNOLOGY INC /DE/ | 3,396,730 | 5.0% | EDGAR |
| SC 13G/A | 2020-02-14 | KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | ASPEN TECHNOLOGY INC /DE/ | 6,100,720 | 8.9% | EDGAR |
| SC 13G/A | 2020-02-13 | RENAISSANCE TECHNOLOGIES LLC | ASPEN TECHNOLOGY INC /DE/ | 1,964,003 | 2.9% | EDGAR |