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Omeros stock timeline
A year of the price with every insider trade, planned sale, earnings report and material 8-K marked
252 sessions+157.1% to $16.92
Omeros (OMER) stock rose 157% over the last 252 sessions, to $16.92. On the way it reported 4 quarters, its insiders filed 7 open-market trades and 9 Form 144 notices of planned sales, and the company filed 3 material 8-Ks. Each is marked on the price and listed with what the stock did next.
Each mark, and what followed
| Date | Kind | What | Next session | 5 sessions | 21 sessions |
|---|---|---|---|---|---|
| Oct 30, 2026 | 8-K | Directors and officers: departures, appointments, pay | −3.4% (−2.9% vs SPY) | −8.6% (−5.8% vs SPY) | — |
| Sep 23, 2026 | Form 144 | Form 144: David Borges plans to sell $314K | −1.5% (−0.8% vs SPY) | −8.9% (−7.8% vs SPY) | −25.8% (−25.8% vs SPY) |
| Sep 22, 2026 | Form 144 | Form 144: David Borges plans to sell $185K | +13.0% (+13.0% vs SPY) | +5.0% (+6.0% vs SPY) | −11.1% (−10.5% vs SPY) |
| Aug 31, 2026 | Form 144 | Form 144: Peter Cancelmo plans to sell $464K | +1.0% (+1.3% vs SPY) | +1.8% (+1.7% vs SPY) | +3.4% (+3.8% vs SPY) |
| Aug 31, 2026 | Insider sale | Cancelmo Peter B sold $464K | +1.0% (+1.3% vs SPY) | +1.8% (+1.7% vs SPY) | +3.4% (+3.8% vs SPY) |
| Aug 28, 2026 | Form 144 | Form 144: Peter Cancelmo plans to sell $466K | −3.4% (−3.2% vs SPY) | −0.7% (−1.0% vs SPY) | +0.9% (+1.4% vs SPY) |
| Aug 28, 2026 | Insider sale | Cancelmo Peter B sold $466K | −3.4% (−3.2% vs SPY) | −0.7% (−1.0% vs SPY) | +0.9% (+1.4% vs SPY) |
| Aug 27, 2026 | Form 144 | Form 144: Arnold Hanish plans to sell $189K | +5.5% (+4.9% vs SPY) | +3.5% (+3.6% vs SPY) | +9.7% (+8.8% vs SPY) |
| Aug 27, 2026 | Insider sale | Hanish Arnold C sold $190K | +5.5% (+4.9% vs SPY) | +3.5% (+3.6% vs SPY) | +9.7% (+8.8% vs SPY) |
| Aug 26, 2026 | Form 144 | Form 144: Arnold Hanish plans to sell $94K | −5.6% (−5.7% vs SPY) | −2.8% (−2.2% vs SPY) | +4.3% (+3.9% vs SPY) |
| Aug 26, 2026 | Insider sale | Hanish Arnold C sold $93K | −5.6% (−5.7% vs SPY) | −2.8% (−2.2% vs SPY) | +4.3% (+3.9% vs SPY) |
| Aug 21, 2026 | Form 144 | Form 144: David Borges plans to sell $203K | +3.4% (+3.0% vs SPY) | +3.3% (+2.2% vs SPY) | −0.7% (−2.4% vs SPY) |
| Aug 20, 2026 | Form 144 | Form 144: Thomas Cable plans to sell $277K | +1.3% (+2.1% vs SPY) | −0.9% (−0.5% vs SPY) | −2.8% (−2.1% vs SPY) |
| Aug 20, 2026 | Insider sale | Cable Thomas J. sold $277K | +1.3% (+2.1% vs SPY) | −0.9% (−0.5% vs SPY) | −2.8% (−2.1% vs SPY) |
| Aug 13, 2026 | 8-K | Directors and officers: departures, appointments, pay | −0.9% (−0.7% vs SPY) | +7.1% (+9.1% vs SPY) | +0.6% (+2.9% vs SPY) |
| Aug 13, 2026 | Form 144 | Form 144: David Borges plans to sell $69K | +23.5% (+22.8% vs SPY) | +29.4% (+29.8% vs SPY) | +28.8% (+29.8% vs SPY) |
| Aug 12, 2026 | Earnings | Earnings: beat the EPS estimate by 128.8% | +0.8% (+0.6% vs SPY) | +23.4% (+23.8% vs SPY) | +31.3% (+32.9% vs SPY) |
| May 13, 2026 | Earnings | Earnings: beat the EPS estimate by 244.9% | −2.6% (−3.2% vs SPY) | −21.0% (−20.3% vs SPY) | −37.2% (−37.1% vs SPY) |
| Mar 31, 2026 | Earnings | Earnings: beat the EPS estimate by 40.2% | +7.4% (+4.5% vs SPY) | +11.3% (+7.0% vs SPY) | +39.5% (+27.6% vs SPY) |
| Jan 13, 2026 | Insider sale | Borges David J. sold $369K | −1.6% (−1.4% vs SPY) | −4.5% (−1.9% vs SPY) | −13.2% (−12.8% vs SPY) |
| Jan 12, 2026 | Insider sale | Borges David J. sold $382K | +2.6% (+2.5% vs SPY) | −3.9% (−3.6% vs SPY) | −11.2% (−10.9% vs SPY) |
| Dec 1, 2025 | 8-K | Termination of a material agreement | −0.1% (+0.4% vs SPY) | +11.3% (+11.0% vs SPY) | +55.9% (+55.1% vs SPY) |
| Nov 13, 2025 | Earnings | Earnings: beat the EPS estimate by 33.0% | −9.3% (−7.6% vs SPY) | +17.6% (+20.7% vs SPY) | +38.7% (+39.0% vs SPY) |
Insiders’ record here
In the year on the chart, Omeros' insiders reported 0 open-market buys ($0) and 7 sales ($2.2M). Of the 2 old enough to score, 2 were followed by the stock doing what the trade implied over the next 63 sessions (beating SPY after a buy, lagging it after a sale); the median excess return after a buy was — and after a sale −3.8%.
Across the whole universe (19,782 scored trades), insider buys beat the market 46% of the time and sales were followed by a lagging stock 61% of the time; buys of $1M or more 39%. Every pattern →
What this kind of 8-K usually did
| Item | 8-Ks | Next session, median | Up next session | 21 sessions, median | Typical size |
|---|---|---|---|---|---|
| 1.02 Termination of a material agreement | 2,368 | 0.0% | 51% | +1.1% | ±1.5% |
| 2.01 Completed acquisition or disposition | 2,671 | +0.1% | 52% | +1.2% | ±1.6% |
| 5.02 Directors and officers: departures, appointments, pay | 39,174 | −0.1% | 48% | +0.7% | ±1.4% |
Across every company in the move-odds universe, measured from the close before the filing. Every 8-K item ranked →
Report card: every quarter against the estimate → Omeros: every quarter → Live insider trades →
Prices are daily closes; filings and trades are as filed with the SEC (Form 4 within two business days of the trade, 8-K within four of the event). Moves after a mark are the stock's close-to-close change and the same for SPY; they describe the record, not what the next one will do. Not investment advice.