ETON (Eton Pharmaceutcials, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by ETON officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-31 | PAUL V MAIER | Director | MIXED | — | — |
| 2026-08-28 | PAUL V MAIER | Director | MIXED | — | — |
| 2026-08-24 | David Krempa | Chief Business Officer | MIXED | — | — |
| 2026-08-20 | SEAN BRYNJELSEN | President & CEO | Sell | — | — |
| 2026-08-04 | David Krempa | Chief Business Officer | A | — | — |
| 2026-08-04 | Ipek Erdogan-Trinkaus | Chief Commercial Officer | A | — | — |
| 2026-08-04 | Jennifer McKie Adams | Director | A | — | — |
| 2026-08-04 | Judith M. Matthews | Chief Financial Officer | A | — | — |
| 2026-08-04 | SEAN BRYNJELSEN | President & CEO | A | — | — |
| 2026-08-04 | CHARLES J CASAMENTO | Director | A | — | — |
| 2026-08-04 | NORBERT G RIEDEL | Director | A | — | — |
| 2026-08-04 | PAUL V MAIER | Director | A | — | — |
| 2026-07-17 | Opaleye Management Inc. | 10%+ Owner | Sell | — | — |
| 2026-07-16 | Opaleye Management Inc. | 10%+ Owner | Sell | — | — |
| 2026-07-14 | SEAN BRYNJELSEN | President & CEO | M | — | — |
| 2026-07-13 | David Krempa | Chief Business Officer | M | — | — |
| 2026-07-07 | Opaleye Management Inc. | 10%+ Owner | Sell | — | — |
| 2026-06-17 | Jennifer McKie Adams | Director | MIXED | — | — |
| 2026-05-29 | SEAN BRYNJELSEN | President & CEO | Sell | — | — |
| 2026-05-27 | David Krempa | Chief Business Officer | MIXED | — | — |
| 2026-04-22 | NORBERT G RIEDEL | Director | M | — | — |
| 2026-02-05 | NORBERT G RIEDEL | Director | X | — | — |
| 2026-01-14 | PAUL V MAIER | Director | A | — | — |
| 2026-01-14 | Ipek Erdogan-Trinkaus | Chief Commercial Officer | A | — | — |
| 2026-01-14 | Jennifer McKie Adams | Director | A | — | — |
| 2026-01-14 | SEAN BRYNJELSEN | President & CEO | F | — | — |
| 2026-01-14 | David Krempa | Chief Business Officer | F | — | — |
| 2026-01-14 | NORBERT G RIEDEL | Director | A | — | — |
| 2026-01-14 | James R. Gruber | Chief Financial Officer | F | — | — |
| 2026-01-14 | CHARLES J CASAMENTO | Director | A | — | — |
| 2025-12-12 | Ipek Erdogan-Trinkaus | Chief Commercial Officer | F | — | — |
| 2025-12-12 | SEAN BRYNJELSEN | President & CEO | F | — | — |
| 2025-12-12 | David Krempa | Chief Business Officer | F | — | — |
| 2025-12-12 | James R. Gruber | Chief Financial Officer | F | — | — |
| 2025-08-20 | James R. Gruber | Chief Financial Officer | Sell | — | — |
| 2025-06-16 | David Krempa | Chief Business Officer | Sell | — | — |
| 2025-06-12 | Opaleye Management Inc. | 10%+ Owner | Buy | — | — |
| 2025-06-05 | SEAN BRYNJELSEN | President & CEO | Sell | — | — |
| 2025-01-06 | Jennifer McKie Adams | Director | A | — | — |
| 2025-01-06 | James R. Gruber | Chief Financial Officer | A | — | — |
| 2025-01-06 | David Krempa | Chief Business Officer | A | — | — |
| 2025-01-06 | SEAN BRYNJELSEN | President & CEO | A | — | — |
| 2025-01-06 | NORBERT G RIEDEL | Director | A | — | — |
| 2025-01-06 | NORBERT G RIEDEL | Director | M | — | — |
| 2025-01-06 | CHARLES J CASAMENTO | Director | A | — | — |
| 2025-01-06 | PAUL V MAIER | Director | A | — | — |
| 2024-10-25 | Opaleye Management Inc. | 10%+ Owner | Buy | — | — |
| 2024-10-08 | Opaleye Management Inc. | 10%+ Owner | Buy | — | — |
| 2024-10-04 | David Krempa | Chief Business Officer | A | — | — |
| 2024-09-12 | Opaleye Management Inc. | 10%+ Owner | Buy | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 2,665,000 | — |
| — | 10%+ Owner | 1,982,000 | — |
| — | President & CEO | 1,077,156 | — |
| — | Director | 794,745 | — |
| — | Director | 224,300 | — |
| — | Chief Financial Officer | 213,420 | — |
| — | Director | 71,920 | — |
| — | Director | 59,745 | — |
| — | Director | 50,000 | — |
| — | Chief Business Officer | 37,025 | — |
| — | CFO and Secretary | 23,027 | — |
| — | Chief Commercial Officer | 2,403 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the ETON quote page; the site-wide leaderboard is on the insider transactions hub.