Omeros
Commercializes YARTEMLEA for TA-TMA while advancing complement and specialty therapeutics.
$18.51
After-hours close−0.08 (−0.43%)
At close$18.59(−3.43%)
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Breakdown13F · Form 4
Institutions 51.55%37.31M sharesInsiders 3.22%2.33M sharesOther 45.23%32.73M shares
Shares outstanding 72.38M · Float 69.80M · 96.4% free float
Institutions13F, as of Jun 30, 2026
186 holders · 37.31M shares · 40 new positions · 111 increased · 39 reduced · 26 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 6.04M | 8.35% | +735.0K | Aug 7, 2026 |
| Ingalls & Snyder LLC | 3.66M | 5.06% | +100.1K | Aug 14, 2026 |
| UBS Group AG | 3.15M | 4.35% | +807.7K | Aug 13, 2026 |
| Vanguard Capital Management LLC | 3.07M | 4.24% | +88.8K | Aug 13, 2026 |
| State Street Corp | 2.32M | 3.21% | +400.3K | Aug 7, 2026 |
| Geode Capital Management, LLC | 1.91M | 2.65% | +162.1K | Aug 12, 2026 |
| Stifel Financial Corp | 1.84M | 2.54% | +5.3K | Aug 12, 2026 |
| Vanguard Portfolio Management LLC | 962.8K | 1.33% | +244.2K | Aug 13, 2026 |
Beneficial owners13D/G · 5% or more, as filed
No 13D/G filer at 5% or more on record.
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Gregory A. MD Demopulos | director, officer: Chairman, CEO & President | 1.77M | 2.44% | Feb 20, 2026 |
| Joseph L. Schocken | director | 525.6K | 0.73% | Aug 18, 2026 |
| Thomas J. Cable | director | 35.1K | 0.05% | Aug 21, 2026 |
9 people have not refiled in the last 18 months (1.04M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 27, 2026 | Arnold C. Hanishdirector | Sale · 2 lots | 10,000 | $18.95 | 0 |
| Aug 26, 2026 | Arnold C. Hanishdirector | Sale | 5,000 | $18.53 | 0 |
| Aug 24, 2026 | David J. Borgesofficer: VP, Finance & CAO | Sale | 906 | $19.10 | 0 |
| Aug 21, 2026 | David J. Borgesofficer: VP, Finance & CAO | Sale | 10,000 | $18.95 | 0 |
| Aug 20, 2026 | Thomas J. Cabledirector | Sale | 15,000 | $18.45 | 35,067 |
| Aug 13, 2026 | David J. Borgesofficer: VP, Finance & CAO | Sale | 5,000 | $16.95 | 0 |
| May 22, 2026 | Thomas J. Cabledirector | Sale | 7,500 | $11.61 | 35,067 |
| Jan 12, 2026 | David J. Borgesofficer: VP, Finance & CAO | Sale | 30,000 | $12.72 | 0 |
| Jan 13, 2026 | David J. Borgesofficer: VP, Finance & CAO | Sale | 30,000 | $12.31 | 0 |
CongressHouse and Senate disclosures
Not reported.