Company profile
Eton Pharmaceuticals, Inc. Insider Trading
ETONEvery SEC Form 4 insider trading filing for Eton Pharmaceuticals, Inc. (ETON) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Pharmaceutical Preparations
- CIK
- 0001710340
- Filings
- 55
- Insiders
- 10
- Last filing
- 2026-08-20
Activity summary
Recent insider activity is bullish. Over the last 30 days, 8 insiders purchased shares versus 4 sales. Buying was led by Maier Paul V.
Three year balance
Buy and sell value by quarter, Q1 24 to Q3 26. Eton Pharmaceuticals, Inc. insiders are net sellers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $11.9M.
90 day insight
Over the last 90 days, Eton Pharmaceuticals, Inc. insiders bought $558K (25 transactions) and sold $19.2M (16 transactions).
- Most active insider: Krempa David with 14 transactions totaling $1.9M.
- Largest single sale: $3.8M by Brynjelsen Sean on May 28, 2026.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 20, 2026 | Brynjelsen Sean | ETON | Sale | 47,307 | $60.17 | $2.85M |
| Aug 20, 2026 | Brynjelsen Sean | ETON | Sale | 36,373 | $61.11 | $2.22M |
| Aug 20, 2026 | Brynjelsen Sean | ETON | Sale | 7,342 | $62.12 | $456K |
| Aug 19, 2026 | Brynjelsen Sean | ETON | Sale | 8,978 | $62.65 | $562K |
| Jul 31, 2026 | Maier Paul V | ETON | Award | 10,000 | — | — |
45 more transactions hidden
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-H "X-Api-Key: $KEY"Top insiders
By total value filed.
Institutional Ownership
Top 13F-HR holders of Eton Pharmaceuticals, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →