VANGUARD GROUP INC 13D and 13G filings for Omeros Corporation:
- 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 |
| 2025-10-31 11:05 am Purchase | 2025-09-30 | 13G | Omeros Corporation OMER | VANGUARD GROUP INC | 3,346,958 4.910% | 178,022![]() (+5.62%) | Filing |
| 2024-02-13 5:12 pm Purchase | 2023-12-29 | 13G | Omeros Corporation OMER | VANGUARD GROUP INC | 3,168,936 5.040% | 348,491![]() (+12.36%) | Filing |
| 2023-02-09 11:27 am Sale | 2022-12-30 | 13G | Omeros Corporation OMER | VANGUARD GROUP INC | 2,820,445 4.500% | -537,383![]() (-16.00%) | Filing |
| 2022-02-10 08:28 am Purchase | 2021-12-31 | 13G | Omeros Corporation OMER | VANGUARD GROUP INC | 3,357,828 5.370% | 165,423![]() (+5.18%) | Filing |
| 2021-02-10 11:40 am Purchase | 2020-12-31 | 13G | Omeros Corporation OMER | VANGUARD GROUP INC | 3,192,405 5.180% | 3,192,405![]() (New Position) | Filing |

