ALTAIR ENGINEERING INC. Form SC 13D: Beneficial ownership report (active)
Filings on SEC EDGAR, newest first; amendments sit with their base form. Values are as filed.
- 2018-11-14: Form SC 13D; Description SC 13D; Document d520061dsc13d.htm.
| Filed | Form | Period of report | Description | Document |
|---|---|---|---|---|
| 2018-11-14 | SC 13D | SC 13D | d520061dsc13d.htm |