Sean Brynjelsen
President & CEO at Eton Pharmaceuticals Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Eton Pharmaceuticals Inc., 3 years.
Eton Pharmaceuticals Inc.
Director · President & CEO
Chief executive roles
Eton Pharmaceuticals Inc.
· President & CEO
Dates unknown
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jul 14, 2026 | Eton Pharmaceuticals Inc. | Option exercise | +200,000 | $1.37 | $274,000 |
| Jul 12, 2026 | Eton Pharmaceuticals Inc. | Option exercise | +27,500 | — | — |
| May 28, 2026 | Eton Pharmaceuticals Inc. | Open-market sale | −119,852 | $31.88 | $3,820,882 |
| May 28, 2026 | Eton Pharmaceuticals Inc. | Open-market sale | −148 | $32.67 | $4,835 |
| Jan 1, 2026 | Eton Pharmaceuticals Inc. | Shares withheld for tax | −5,015 | $15.39 | $77,181 |
| Dec 12, 2025 | Eton Pharmaceuticals Inc. | Shares withheld for tax | −6,732 | $16.83 | $113,300 |
| Jun 5, 2025 | Eton Pharmaceuticals Inc. | Open-market sale | −70,000 | $16.81 | $1,176,700 |
| Jun 4, 2025 | Eton Pharmaceuticals Inc. | Open-market sale | −70,000 | $17.00 | $1,190,000 |
| Jun 3, 2025 | Eton Pharmaceuticals Inc. | Open-market sale | −60,945 | $17.38 | $1,059,224 |
| Jun 3, 2025 | Eton Pharmaceuticals Inc. | Open-market sale | −8,655 | $18.38 | $159,079 |
| Jun 3, 2025 | Eton Pharmaceuticals Inc. | Open-market sale | −400 | $19.02 | $7,608 |
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