Sean Brynjelsen
CIK: 0001669976
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Eton Pharmaceuticals, Inc.
Discretionary Trading P&L
Holdings
Transaction History (20 total)
- Aug 20, 2026ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct7.3K shares at avg. $62.12$456K - Aug 20, 2026ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct36.4K shares at avg. $61.11$2.2M - Aug 20, 2026ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct47.3K shares at avg. $60.17$2.8M - Aug 19, 2026ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct9K shares at avg. $62.65$562K - Jul 31, 2026ETON
Eton Pharmaceuticals, Inc.
Award(A)DirectCommon Stock
129K shares- - Jul 14, 2026ETON
Eton Pharmaceuticals, Inc.
Exercise(M)Direct200K shares at avg. $1.37$274K - Jul 12, 2026ETON
Eton Pharmaceuticals, Inc.
Exercise(M)Direct27.5K shares- - May 28, 2026ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct119.9K shares at avg. $31.88$3.8M - May 28, 2026ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct148 shares at avg. $32.67$5K - Jan 12, 2026ETON
Eton Pharmaceuticals, Inc.
Award(A)DirectRestricted Stock Units
100.5K shares- - Jan 12, 2026ETON
Eton Pharmaceuticals, Inc.
Award(A)DirectEmployee Stock Option (Right to Buy)
158K shares- - Jan 1, 2026ETON
Eton Pharmaceuticals, Inc.
Tax Payment(F)Direct5K shares at avg. $15.39$77K - Dec 12, 2025ETON
Eton Pharmaceuticals, Inc.
Tax Payment(F)Direct6.7K shares at avg. $16.83$113K - Jun 5, 2025ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct70K shares at avg. $16.81$1.2M - Jun 4, 2025ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct70K shares at avg. $17.00$1.2M - Jun 3, 2025ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct8.7K shares at avg. $18.38$159K - Jun 3, 2025ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct60.9K shares at avg. $17.38$1.1M - Jun 3, 2025ETON
Eton Pharmaceuticals, Inc.
Sale(S)Direct400 shares at avg. $19.02$8K - Jan 3, 2025ETON
Eton Pharmaceuticals, Inc.
Award(A)DirectEmployee Stock Option (Right to Buy)
107.5K shares- - Jan 3, 2025ETON
Eton Pharmaceuticals, Inc.
Award(A)DirectRestricted Stock Units
72K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Aug 20, 2026 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 7,342 | $62.12 | $456,085 | Direct |
| Aug 20, 2026 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 36,373 | $61.11 | $2,222,754 | Direct |
| Aug 20, 2026 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 47,307 | $60.17 | $2,846,462 | Direct |
| Aug 19, 2026 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 8,978 | $62.65 | $562,472 | Direct |
| Jul 31, 2026 | ETON Eton Pharmaceuticals, Inc. | Award(A) Common Stock | 128,985 | - | - | Direct |
| Jul 14, 2026 | ETON Eton Pharmaceuticals, Inc. | Exercise(M) | 200,000 | $1.37 | $274,000 | Direct |
| Jul 12, 2026 | ETON Eton Pharmaceuticals, Inc. | Exercise(M) | 27,500 | - | $0 | Direct |
| May 28, 2026 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 119,852 | $31.88 | $3,820,882 | Direct |
| May 28, 2026 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 148 | $32.67 | $4,835 | Direct |
| Jan 12, 2026 | ETON Eton Pharmaceuticals, Inc. | Award(A) Restricted Stock Units | 100,517 | - | - | Direct |
| Jan 12, 2026 | ETON Eton Pharmaceuticals, Inc. | Award(A) Employee Stock Option (Right to Buy) | 158,046 | - | - | Direct |
| Jan 1, 2026 | ETON Eton Pharmaceuticals, Inc. | Tax Payment(F) | 5,015 | $15.39 | $77,181 | Direct |
| Dec 12, 2025 | ETON Eton Pharmaceuticals, Inc. | Tax Payment(F) | 6,732 | $16.83 | $113,300 | Direct |
| Jun 5, 2025 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 70,000 | $16.81 | $1,176,700 | Direct |
| Jun 4, 2025 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 70,000 | $17.00 | $1,190,000 | Direct |
| Jun 3, 2025 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 8,655 | $18.38 | $159,079 | Direct |
| Jun 3, 2025 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 60,945 | $17.38 | $1,059,224 | Direct |
| Jun 3, 2025 | ETON Eton Pharmaceuticals, Inc. | Sale(S) | 400 | $19.02 | $7,608 | Direct |
| Jan 3, 2025 | ETON Eton Pharmaceuticals, Inc. | Award(A) Employee Stock Option (Right to Buy) | 107,469 | - | - | Direct |
| Jan 3, 2025 | ETON Eton Pharmaceuticals, Inc. | Award(A) Restricted Stock Units | 72,004 | - | - | Direct |
1-20 of 20 transactions
About BRYNJELSEN SEAN
BRYNJELSEN SEAN (SEC CIK 0001669976) files insider reports with the SEC as President & CEO of Eton Pharmaceuticals, Inc. (ETON).
Signal8 holds 8 ownership filings by BRYNJELSEN SEAN, all Form 4s, filed between Jan 6, 2025 and Aug 20, 2026. Those filings report 20 transactions, from Jan 3, 2025 to Aug 20, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on BRYNJELSEN SEAN's filings is in DEERPARK, IL.
Recent filings by BRYNJELSEN SEAN
- Aug 20, 2026: Open-market sales of ETON shares (3 lines, Form 4, code S).
- Aug 19, 2026: Open-market sale of ETON shares (Form 4, code S).
- Jul 31, 2026: Grant or award of ETON derivative securities (Form 4, code A).
- Jul 14, 2026: Option exercise of ETON shares (Form 4, code M).
- Jul 12, 2026: Option exercise of ETON shares (Form 4, code M).
Other insiders filing for Eton Pharmaceuticals, Inc. (ETON)
- Krempa David, Chief Business Officer
- MAIER PAUL V, Director
- Radosavljevic Danka, Chief Operating Officer
- CASAMENTO CHARLES J, Director
- Matthews Judith M., Chief Financial Officer
- Erdogan-Trinkaus Ipek, Chief Commercial Officer