7 insiders reported 52 Form 4 transactions for Eton Pharmaceuticals, Inc. (ETON) over the past 18 months (most recent 2026-08-20). Recent activity: BRYNJELSEN SEAN (President & CEO) Sell 8,978 shares, BRYNJELSEN SEAN (President & CEO) Sell 47,307 shares, BRYNJELSEN SEAN (President & CEO) Sell 36,373 shares, BRYNJELSEN SEAN (President & CEO) Sell 7,342 shares, Opaleye Management Inc. (10% Owner) Sell 15,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-20 | BRYNJELSEN SEAN | President & CEO | Sell | 8,978 | $562,472 |
| 2026-08-20 | BRYNJELSEN SEAN | President & CEO | Sell | 47,307 | $2.8M |
| 2026-08-20 | BRYNJELSEN SEAN | President & CEO | Sell | 36,373 | $2.2M |
| 2026-08-20 | BRYNJELSEN SEAN | President & CEO | Sell | 7,342 | $456,085 |
| 2026-07-17 | Opaleye Management Inc. | 10% Owner | Sell | 15,000 | $563,146 |
| 2026-07-17 | Opaleye Management Inc. | 10% Owner | Sell | 13,315 | $499,886 |
| 2026-07-16 | Opaleye Management Inc. | 10% Owner | Sell | 15,000 | $563,146 |
| 2026-07-16 | Opaleye Management Inc. | 10% Owner | Sell | 13,315 | $499,886 |
| 2026-07-14 | BRYNJELSEN SEAN | President & CEO | Buy | 27,500 | $0 |
| 2026-07-14 | BRYNJELSEN SEAN | President & CEO | Buy | 200,000 | $274,000 |
| 2026-07-13 | Krempa David | Chief Business Officer | Buy | 10,000 | $0 |
| 2026-07-07 | Opaleye Management Inc. | 10% Owner | Sell | 25,000 | $934,628 |
| 2026-07-07 | Opaleye Management Inc. | 10% Owner | Sell | 65,000 | $2.4M |
| 2026-07-07 | Opaleye Management Inc. | 10% Owner | Sell | 10,000 | $380,000 |
| 2026-07-07 | Opaleye Management Inc. | 10% Owner | Sell | 20,000 | $767,456 |
| 2026-07-07 | Opaleye Management Inc. | 10% Owner | Sell | 6,685 | $256,522 |
| 2026-06-17 | Adams Jennifer McKie | Director | Buy | 50,000 | $189,000 |
| 2026-06-17 | Adams Jennifer McKie | Director | Sell | 50,000 | $1.6M |
| 2026-05-29 | BRYNJELSEN SEAN | President & CEO | Sell | 119,852 | $3.8M |
| 2026-05-29 | BRYNJELSEN SEAN | President & CEO | Sell | 148 | $4,835 |
| 2026-05-27 | Krempa David | Chief Business Officer | Buy | 30,591 | $109,516 |
| 2026-05-27 | Krempa David | Chief Business Officer | Sell | 32,963 | $1.1M |
| 2026-05-27 | Krempa David | Chief Business Officer | Sell | 9,315 | $315,594 |
| 2026-05-27 | Krempa David | Chief Business Officer | Sell | 519 | $18,165 |
| 2026-05-27 | Krempa David | Chief Business Officer | Buy | 25,000 | $34,500 |
Source: SEC Form 4 filings · as of 2026-08-20