Institutional Ownership
Omeros Corp
CUSIP 682143102COMOMERQ1 2026
13D / 13G Filings
29
Schedule 13D/13G on record
Beneficial Filers
9
Distinct reporting persons
Largest Stake
9.4%
Max % of class reported
Institutional Holders
156
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
29 filings · latest Jan 30, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 30, 2026 | The Vanguard Group | 13G | 5.7% | 4.01M | SEC |
| 2 | Oct 31, 2025 | The Vanguard Group | 13G/A | 4.9% | 3.35M | SEC |
| 3 | Feb 21, 2025 | Ingalls &Amp; Snyder LLC | 13G/A | 7.2% | 4.16M | SEC |
| 4 | Mar 27, 2024 | Ingalls & Snyder LLC | 13G/A | 7.0% | 4.43M | SEC |
| 5 | Feb 14, 2024 | Demopulos Gregory A Md | 13G/A | 8.8% | 5.70M | SEC |
| 6 | Feb 13, 2024 | Vanguard Group Inc | 13G | 5.0% | 3.17M | SEC |
| 7 | Jan 29, 2024 | Blackrock Inc. | 13G | 6.8% | 4.28M | SEC |
| 8 | Feb 17, 2023 | Ingalls & Snyder LLC | 13G/A | 6.6% | 4.13M | SEC |
| 9 | Feb 14, 2023 | Demopulos Gregory A Md | 13G/A | 8.4% | 5.55M | SEC |
| 10 | Feb 9, 2023 | Vanguard Group Inc | 13G/A | 4.5% | 2.82M | SEC |
19 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Omeros Corp.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 5.31M | $56.07M |
| 2 | Ubs Group AG | 2.34M | $24.72M |
| 3 | State Street Corp | 1.92M | $20.27M |
| 4 | Stifel Financial Corp | 1.83M | $19.34M |
| 5 | Geode Capital Management, LLC | 1.75M | $18.51M |
| 6 | Corient Private Wealth LLC | 801.4K | $8.46M |
| 7 | Charles Schwab Investment Management Inc | 582.5K | $6.15M |
| 8 | Bank Of Montreal /Can/ | 568.4K | $6.00M |
| 9 | Northern Trust Corp | 563.9K | $5.95M |
| 10 | Susquehanna International Group, LLP | 485.0K | $5.12M |