Latest filingSep 01, 2026Most recent Form 4
OMER
OMEROS CORP
NasdaqHealthcarePharmaceutical Preparations
Insider activity for last month from 08/03 to 09/03. Counts use processed Form 4 rows. Purchase and sale metrics use codes P and S; totals remain unknown when any matching value is missing. Rows without a usable transaction date cannot be assigned to a rolling period and are excluded.
Total buying$00 buys
Total selling$157M7 sells
Net open-market-$157M5 insiders
Open-market mix
Buy vs sell distribution by transaction countInsider activity report
Monthly open-market purchase and sale counts Buys Sells
Transaction codes
By Form 4 transaction code in selected period23transactions
- M · Option exercise · dominant15 · 65%
- S · Open-market sells7 · 30%
- A · Grants / awards1 · 4%
Activity by reported role
A joint filing can contribute to multiple roles32transactions
- Director · dominant14 · 44%
- VP9 · 28%
- GC6 · 19%
- CAO3 · 9%
Distinct insiders active
Reporting-owner CIKs by month · peak Aug 2026 (5)Aug 2026Sep 2026
Reported Holdings After
Separated by insider, security, and ownership typeHanish Arnold CCommon Stock · Direct
0Aug 27, 2026
Cancelmo Peter BCommon Stock · Direct
25,200Aug 31, 2026
Cable Thomas J.Common Stock · Direct
35,067Aug 20, 2026
Hanish Arnold CStock Option (Right to Buy) · Direct
0Aug 27, 2026
Borges David J.Common Stock · Direct
0Aug 13, 2026
Cancelmo Peter BStock Option (Right to Buy) · Direct
50,000Aug 31, 2026
Schocken Joseph LStock Option (Right to Buy) · Direct
30,000Aug 12, 2026
Borges David J.Stock Option (Right to Buy) · Direct
15,000Aug 13, 2026
These are reported post-transaction holdings, not company-wide ownership percentages. Securities, indirect vehicles, and amendments are kept separate.
Filing activity heatmap
Each cell is one day · intensity = transactions · buys green, sells redAug 03 → Sep 03
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Top insiders
By absolute net value across the selected period- CB-$782.7k
- CJ-$232.3k
- BJ-$65.1k
- SL+$0
Recent filing activity
Most recent 12 transactions · color = transaction code- MOption exercise09/01$0SEC
- MOption exercise09/01$0SEC
- SSell09/01-$46.3MSEC
- MOption exercise09/01$7.35MSEC
- SSell09/01-$46.6MSEC
- MOption exercise09/01$7.35MSEC
- MOption exercise08/21$0SEC
- SSell08/21-$27.6MSEC
- MOption exercise08/21$2.94MSEC
- MOption exercise08/21$1.50MSEC
- AGrant08/19$0SEC
- MOption exercise08/17$0SEC
Filing detail checks
Secondary metrics for the selected periodFiling-only signals
Deterministic matches in the selected period
OMER transaction history
Filters apply within this company and selected period by default| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| OMER | Cancelmo Peter B | VPGC | exercise | 25.0k | $0 | M | 0.0% | 09/01 | 08/31 | |
| OMER | Cancelmo Peter B | VPGC | exercise | 25.0k | $0 | M | 0.0% | 09/01 | 08/28 | |
| OMER | Cancelmo Peter B | VPGC | sale | 25.0k | -$46.3M | S | 0.0% | 09/01 | 08/31 | |
| OMER | Cancelmo Peter B | VPGC | exercise | 25.0k | $7.35M | M | 0.0% | 09/01 | 08/31 | |
| OMER | Cancelmo Peter B | VPGC | sale | 25.0k | -$46.6M | S | 0.0% | 09/01 | 08/28 | |
| OMER | Cancelmo Peter B | VPGC | exercise | 25.0k | $7.35M | M | 0.0% | 09/01 | 08/28 | |
| OMER | Cable Thomas J. | DIR | exercise | 7.50k | $0 | M | −3.4% | 08/21 | 08/20 | |
| OMER | Cable Thomas J. | DIR | sale | 15.0k | -$27.6M | S | −3.4% | 08/21 | 08/20 | |
| OMER | Cable Thomas J. | DIR | exercise | 7.50k | $2.94M | M | −3.4% | 08/21 | 08/20 | |
| OMER | Cable Thomas J. | DIR | exercise | 7.50k | $1.50M | M | −3.4% | 08/21 | 08/20 | |
| OMER | Schocken Joseph L | DIR | grant | 30.0k | $0 | A | +2.0% | 08/19 | 08/12 | |
| OMER | Borges David J. | VPCAO | exercise10b5-1 | 5.00k | $0 | M | +8.0% | 08/17 | 08/13 | |
| OMER | Borges David J. | VPCAO | sale10b5-1 | 5.00k | -$8.47M | S | +8.0% | 08/17 | 08/13 | |
| OMER | Borges David J. | VPCAO | exercise10b5-1 | 5.00k | $1.96M | M | +8.0% | 08/17 | 08/13 |
OMEROS CORP Insider Activity FAQ
SEC Form 4 contextWho recently reported transactions at OMEROS CORP?
Cancelmo Peter B, HANISH ARNOLD C, Cable Thomas J., Schocken Joseph L, Borges David J..
When was the latest reported open-market purchase?
No code-P purchase is available for this period.
When was the latest reported open-market sale?
Cancelmo Peter B reported a sale on Aug 31, 2026 valued at $46.3M. Read the SEC filing.
What is the recent purchase and sale balance?
Net open-market selling in the selected period was $1,573,284.00. Sales can occur for many non-investment reasons.
Where can I see the original SEC filing?
Every transaction row and latest-activity fact links to its original SEC filing.
What do these Form 4 transaction codes mean?
P and S generally describe open-market or private purchases and sales. A, D, F, M, X, G, J, and V describe awards, issuer dispositions, tax withholding, exercises, gifts, other transactions, and voluntary early reports; review each filing and its footnotes for context.