Eton Pharmaceuticals, Inc. (ETON)
Eton Pharmaceuticals, Inc. (ETON) Insider Trading
Directors, officers and holders of more than 10% of ETON report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 127 transactions on file: 0 with code P, 20 with code S and 30 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 6, 2026 | Krempa David | Chief Business Officer | S Sale | 4,166 | $55.07 | $229,406 |
| Oct 2, 2026 | Krempa David | Chief Business Officer | M Exercise | 10,522 | Not measured | Not measured |
| Oct 2, 2026 | Krempa David | Chief Business Officer | M Exercise | 10,522 | Not measured | Not measured |
| Aug 28, 2026 | MAIER PAUL V | Director | M Exercise | 50,000 | Not measured | Not measured |
| Aug 28, 2026 | MAIER PAUL V | Director | S Sale | 36,387 | $58.64 | $2,133,734 |
| Aug 28, 2026 | MAIER PAUL V | Director | S Sale | 128 | $61.77 | $7,907 |
| Aug 28, 2026 | MAIER PAUL V | Director | M Exercise | 50,000 | $3.78 | $189,000 |
| Aug 28, 2026 | MAIER PAUL V | Director | S Sale | 13,485 | $60.21 | $811,932 |
| Aug 24, 2026 | Krempa David | Chief Business Officer | S Sale | 25,000 | $65.07 | $1,626,750 |
| Aug 24, 2026 | Krempa David | Chief Business Officer | M Exercise | 25,000 | Not measured | Not measured |
| Aug 24, 2026 | Krempa David | Chief Business Officer | M Exercise | 25,000 | $7.31 | $182,750 |
| Aug 20, 2026 | BRYNJELSEN SEAN | President & CEO | S Sale | 36,373 | $61.11 | $2,222,754 |
| Aug 20, 2026 | BRYNJELSEN SEAN | President & CEO | S Sale | 7,342 | $62.12 | $456,085 |
| Aug 20, 2026 | BRYNJELSEN SEAN | President & CEO | S Sale | 47,307 | $60.17 | $2,846,462 |
| Aug 19, 2026 | BRYNJELSEN SEAN | President & CEO | S Sale | 8,978 | $62.65 | $562,472 |
| Jul 31, 2026 | Adams Jennifer McKie | Director | A Award | 10,000 | Not measured | Not measured |
| Jul 31, 2026 | BRYNJELSEN SEAN | President & CEO | A Award | 128,985 | Not measured | Not measured |
| Jul 31, 2026 | Matthews Judith M. | Chief Financial Officer | A Award | 32,246 | Not measured | Not measured |
| Jul 31, 2026 | Krempa David | Chief Business Officer | A Award | 128,985 | Not measured | Not measured |
| Jul 31, 2026 | RIEDEL NORBERT G | Director | A Award | 10,000 | Not measured | Not measured |
| Jul 31, 2026 | CASAMENTO CHARLES J | Director | A Award | 10,000 | Not measured | Not measured |
| Jul 31, 2026 | MAIER PAUL V | Director | A Award | 10,000 | Not measured | Not measured |
| Jul 31, 2026 | Erdogan-Trinkaus Ipek | Chief Commercial Officer | A Award | 80,000 | Not measured | Not measured |
| Jul 14, 2026 | BRYNJELSEN SEAN | President & CEO | M Exercise | 200,000 | $1.37 | $274,000 |
| Jul 14, 2026 | Opaleye Management Inc. | 10% Owner | S Sale | 13,315 | $37.54 | $499,886 |
| Jul 14, 2026 | BRYNJELSEN SEAN | President & CEO | M Exercise | 200,000 | Not measured | Not measured |
| Jul 14, 2026 | Opaleye Management Inc. | 10% Owner | S Sale | 15,000 | $37.54 | $563,147 |
| Jul 12, 2026 | BRYNJELSEN SEAN | President & CEO | M Exercise | 27,500 | Not measured | Not measured |
| Jul 12, 2026 | Krempa David | Chief Business Officer | M Exercise | 10,000 | Not measured | Not measured |
| Jul 12, 2026 | Krempa David | Chief Business Officer | M Exercise | 10,000 | Not measured | Not measured |
| Jul 12, 2026 | BRYNJELSEN SEAN | President & CEO | M Exercise | 27,500 | Not measured | Not measured |
| Jul 7, 2026 | Opaleye Management Inc. | 10% Owner | S Sale | 6,685 | $38.37 | $256,522 |
| Jul 7, 2026 | Opaleye Management Inc. | 10% Owner | S Sale | 20,000 | $38.37 | $767,456 |
| Jul 6, 2026 | Opaleye Management Inc. | 10% Owner | S Sale | 10,000 | $38.00 | $380,000 |
| Jul 2, 2026 | Opaleye Management Inc. | 10% Owner | S Sale | 25,000 | $37.39 | $934,628 |
| Jul 2, 2026 | Opaleye Management Inc. | 10% Owner | S Sale | 65,000 | $37.39 | $2,430,032 |
| Jun 17, 2026 | Adams Jennifer McKie | Director | S Sale | 50,000 | $32.48 | $1,623,795 |
| Jun 17, 2026 | Adams Jennifer McKie | Director | M Exercise | 50,000 | $3.78 | $189,000 |
| Jun 17, 2026 | Adams Jennifer McKie | Director | M Exercise | 50,000 | Not measured | Not measured |
| May 28, 2026 | BRYNJELSEN SEAN | President & CEO | S Sale | 148 | $32.67 | $4,835 |
| May 28, 2026 | BRYNJELSEN SEAN | President & CEO | S Sale | 119,852 | $31.88 | $3,820,882 |
| May 27, 2026 | Krempa David | Chief Business Officer | M Exercise | 12,476 | Not measured | Not measured |
| May 27, 2026 | Krempa David | Chief Business Officer | M Exercise | 7,203 | Not measured | Not measured |
| May 27, 2026 | Krempa David | Chief Business Officer | S Sale | 19,679 | $31.47 | $619,375 |
| May 27, 2026 | Krempa David | Chief Business Officer | M Exercise | 7,203 | $3.58 | $25,787 |
| May 27, 2026 | Krempa David | Chief Business Officer | M Exercise | 12,476 | $1.37 | $17,092 |
| May 26, 2026 | Krempa David | Chief Business Officer | M Exercise | 12,524 | $1.37 | $17,158 |
| May 26, 2026 | Krempa David | Chief Business Officer | M Exercise | 25,000 | $1.38 | $34,500 |
| May 26, 2026 | Krempa David | Chief Business Officer | M Exercise | 25,000 | Not measured | Not measured |
| May 26, 2026 | Krempa David | Chief Business Officer | M Exercise | 12,524 | Not measured | Not measured |
The full Form 4 history is on the ETON company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.