| Filed On | Filing |
|---|---|
| 21 Nov 2024 | SC 13G |
| 31 Jan 2024 | SC 13G |
| 14 Feb 2020 | ALTAIR ENGINEERING, INC. |
| 17 Jan 2020 | CONESTOGA CAPITAL ADVISORS |
| 11 Feb 2019 | SC 13G |
| 08 Feb 2019 | SC 13G |
| 15 Feb 2018 | NONE |
| 14 Feb 2018 | SC 13G |
| 14 Feb 2018 | SC 13 |
| 14 Feb 2018 | SC 13G |
| 14 Feb 2018 | SC 13G |
| 14 Feb 2018 | SC 13 |
| 14 Feb 2018 | NONE |
| 14 Feb 2018 | SC 13G |
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