Key facts
- This page summarizes Arnold C. Hanish's Form 4 filing for OMEROS CORP (OMER).
- 9 reported transactions and 3 derivative rows are listed below.
- Accepted by SEC: 28 Aug 2026, 16:31.
Arnold C. Hanish - 26 Aug 2026 Form 4 Insider Report for OMEROS CORP (OMER)
- Reporting relationship
- Director
- Issuer ticker
- OMER
- Reported as of
- 26 Aug 2026
- Net transaction value
- -$282,094
- SEC form
- 4
- Accepted by SEC
- 28 Aug 2026, 16:31:41 UTC
- Prior SEC filing
- 22 Jun 2026
- Next SEC filing
- 02 Sep 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Peter B. Cancelmo, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Arnold C. Hanish filed Form 4 for OMEROS CORP (OMER) on 28 Aug 2026.
Change
- Previous filing in this sequence was filed on 22 Jun 2026.
- Current net transaction value: -$282,094.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001233253
Primary reporting owner
HANISH ARNOLD C
- Relationship
- Director
- Address
- 201 ELLIOTT AVENUE WEST, SEATTLE
- Signature
- /s/ Peter B. Cancelmo, Attorney-in-Fact
- Signature date
- 28 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
OMER
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +5,000
- Change %
- Price
- $15.81*
- Shares after
- 5,000
- Date
- 26 Aug 2026
- Ownership
- Direct
OMER
transaction
Common Stock
Sale
- Transaction value
- $92,632
- Shares
- -5,000
- Change %
- -100%
- Price
- $18.53
- Shares after
- 0
- Date
- 26 Aug 2026
- Ownership
- Direct
- Footnotes
- F1
OMER
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +2,500
- Change %
- Price
- $15.81*
- Shares after
- 2,500
- Date
- 27 Aug 2026
- Ownership
- Direct
OMER
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +7,500
- Change %
- +300%
- Price
- $14.66*
- Shares after
- 10,000
- Date
- 27 Aug 2026
- Ownership
- Direct
OMER
transaction
Common Stock
Sale
- Transaction value
- $94,381
- Shares
- -5,000
- Change %
- -50%
- Price
- $18.88
- Shares after
- 5,000
- Date
- 27 Aug 2026
- Ownership
- Direct
- Footnotes
- F2
OMER
transaction
Common Stock
Sale
- Transaction value
- $95,080
- Shares
- -5,000
- Change %
- -100%
- Price
- $19.02
- Shares after
- 0
- Date
- 27 Aug 2026
- Ownership
- Direct
- Footnotes
- F3
OMER
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 12,400
- Date
- 26 Aug 2026
- Ownership
- Arnold C. Hanish Living Trust
- Footnotes
- F4
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
OMER
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -5,000
- Change %
- -67%
- Price
- $0.000000*
- Shares after
- 2,500
- Date
- 26 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 5,000
- Exercise price
- $15.81
OMER
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -2,500
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 27 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 2,500
- Exercise price
- $15.81
OMER
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -7,500
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 27 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 7,500
- Exercise price
- $14.66
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 4 footnotes
Footnote F1
This transaction was executed in multiple trades at prices ranging from $18.50 to $18.56. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions referenced in this footnote were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.
Footnote F2
This transaction was executed in multiple trades at prices ranging from $18.85 to $18.92. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions referenced in this footnote were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.
Footnote F3
This transaction was executed in multiple trades at prices ranging from $19.00 to $19.10. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions referenced in this footnote were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.
Footnote F4
These shares have not been sold and are held of record by the Arnold C. Hanish Living Trust, for which the reporting person serves as sole trustee.