Flagship Ventures Fund IV General Partner LLC 13D and 13G filings for Rubius Therapeutics, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2022-02-14 3:00 pm Purchase | 2021-12-31 | 13G | Rubius Therapeutics, Inc. RUBY | Flagship Ventures Fund IV General Partner LLC | 38,581,526 42.900% | 241,250 (+0.63%) | Filing |
| 2021-02-16 5:03 pm Purchase | 2020-12-31 | 13G | Rubius Therapeutics, Inc. RUBY | Flagship Ventures Fund IV General Partner LLC | 38,340,276 47.400% | 43,750 (+0.11%) | Filing |