| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | ANSYS INC | 10,161,054 | 11.7% | EDGAR |
| SC 13G/A | 2024-01-23 | BlackRock Inc. | ANSYS INC | 10,605,414 | 12.2% | EDGAR |
| SC 13G/A | 2023-02-14 | Aristotle Capital Management, LLC | ANSYS INC | 4,297,291 | 4.9% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | ANSYS INC | 9,860,259 | 11.3% | EDGAR |
| SC 13G | 2023-01-30 | BlackRock Inc. | ANSYS INC | 8,795,807 | 10.1% | EDGAR |
| SC 13G | 2022-05-09 | BlackRock Inc. | ANSYS INC | 8,729,061 | 10.0% | EDGAR |
| SC 13G | 2022-02-14 | Aristotle Capital Management, LLC | ANSYS INC | 4,530,501 | 5.2% | EDGAR |
| SC 13G/A | 2022-02-09 | VANGUARD GROUP INC | ANSYS INC | 9,414,711 | 10.8% | EDGAR |
| SC 13G/A | 2022-02-01 | BlackRock Inc. | ANSYS INC | 7,652,495 | 8.8% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | ANSYS INC | 9,257,565 | 10.8% | EDGAR |
| SC 13G/A | 2021-01-29 | BlackRock Inc. | ANSYS INC | 7,452,280 | 8.7% | EDGAR |
| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | ANSYS INC | 9,407,937 | 11.0% | EDGAR |
| SC 13G/A | 2020-02-05 | BlackRock Inc. | ANSYS INC | 7,110,902 | 8.4% | EDGAR |
| SC 13G/A | 2019-02-15 | EATON VANCE MANAGEMENT | ANSYS INC | 2,366,745 | 2.8% | EDGAR |
| SC 13G/A | 2019-02-13 | FMR LLC | ANSYS INC | 4,006,635 | 4.8% | EDGAR |
| SC 13G/A | 2019-02-11 | VANGUARD GROUP INC | ANSYS INC | 8,838,844 | 10.6% | EDGAR |
| SC 13G/A | 2019-02-04 | BlackRock Inc. | ANSYS INC | 6,466,673 | 7.7% | EDGAR |
| SC 13G/A | 2018-02-14 | EATON VANCE MANAGEMENT | ANSYS INC | 4,565,113 | 5.4% | EDGAR |
| SC 13G/A | 2018-02-13 | FMR LLC | ANSYS INC | 6,174,283 | 7.3% | EDGAR |
| SC 13G/A | 2018-02-12 | VANGUARD GROUP INC | ANSYS INC | 8,643,100 | 10.2% | EDGAR |