ETON SEC Form 4 filings
Eton Pharmaceuticals, Inc. Latest Insider Trading Activity
The most recent employee insider trading activity for Eton Pharmaceuticals, Inc. was on October 6, 2026, when Krempa David (Chief Business Officer) reported a sale of 4,166 shares at $55.07 per share. For the past 2,894 days, ETON has had 22 total insider transactions represented in the displayed records. This page shows up to the 10 most recent SEC Form 4 filing records on a 6-hour delay. Sign up for real-time updates and access to 20 years of historic insider trading data.
Insider Trading For ETON Charted on Daily Candles. Scroll left or zoom out to load earlier candles (up to 2 years).
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2026-10-06 | 2026-10-06 | Eton Pharmaceuticals, Inc. | Krempa David | Chief Business Officer | Sell | 1 | 4,166 | $55.07 | $229,406.21 | 8.76% | View Filing |
| Explained M/S: sale activity tied to share conversions or derivative-related share movements. ETON | 2026-06-17 | 2026-06-17 | Eton Pharmaceuticals, Inc. | Adams Jennifer Mckie | Director | Sell | 1 | 50,000 | $32.48 | $1,624,000.00 | 100.00% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2026-05-29 | 2026-05-28 | Eton Pharmaceuticals, Inc. | Brynjelsen Sean | President & CEO | Sell | 2 | 120,000 | $31.88 | $3,825,716.92 | 6.71% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2026-05-27 | 2026-05-27 | Eton Pharmaceuticals, Inc. | Krempa David | Chief Business Officer | Sell | 5 | 100,000 | $32.30 | $3,229,716.95 | 42.27% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2025-08-20 | 2025-08-20 | Eton Pharmaceuticals, Inc. | Gruber James R. | Chief Financial Officer | Sell | 2 | 41,713 | $16.15 | $673,713.74 | 9.23% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2025-06-16 | 2025-06-16 | Eton Pharmaceuticals, Inc. | Krempa David | Chief Business Officer | Sell | 3 | 34,000 | $14.83 | $504,317.63 | 1.79% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2025-06-05 | 2025-06-05 | Eton Pharmaceuticals, Inc. | Brynjelsen Sean | President & CEO | Sell | 5 | 210,000 | $17.11 | $3,592,611.00 | 1.39% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2018-11-15 | 2018-11-15 | Eton Pharmaceuticals, Inc. | Brynjelsen Sean | President & CEO | Buy | 1 | 10,000 | $6.00 | $60,000.00 | 0.99% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2018-11-15 | 2018-11-15 | Eton Pharmaceuticals, Inc. | Troutman William Wilson | CFO, Treasurer & Secretary | Buy | 1 | 5,000 | $6.00 | $30,000.00 | 100.00% | View Filing |
| Unexplained: transactions without an ESPP, DRIP, 10b5-1, tax liability, or Explained M/S tag. ETON | 2018-11-15 | 2018-11-15 | Eton Pharmaceuticals, Inc. | Baum Mark L | Director | Buy | 1 | 10,000 | $6.00 | $60,000.00 | 100.00% | View Filing |
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