ETON Insider Trading
SEC Form 4 transaction history for ETON. Filings have up to a 2 business day reporting delay.
Insiders at ETON reported 8 open-market sells worth $8.7M in the last 90 days, with no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification, and estate reasons all the time. Latest filing: Adams Jennifer McKie on 2026-06-17.
Transaction History
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-17 | Adams Jennifer McKie | - | Option exercise | 50.0K | $3.78 | $189K |
| 2026-06-17 | Adams Jennifer McKie | - | Sell | 50.0K | $32.48 | $1.6M |
| 2026-05-28 | BRYNJELSEN SEAN | President & CEO | Sell | 119.9K | $31.88 | $3.8M |
| 2026-05-28 | BRYNJELSEN SEAN | President & CEO | Sell | 148 | $32.67 | $5K |
| 2026-05-27 | Krempa David | Chief Business Officer | Option exercise | 7.2K | $3.58 | $26K |
| 2026-05-27 | Krempa David | Chief Business Officer | Sell | 19.7K | $31.47 | $619K |
| 2026-05-27 | Krempa David | Chief Business Officer | Option exercise | 12.5K | $1.37 | $17K |
| 2026-05-26 | Krempa David | Chief Business Officer | Option exercise | 25.0K | $1.38 | $35K |
| 2026-05-26 | Krempa David | Chief Business Officer | Option exercise | 12.5K | $1.37 | $17K |
| 2026-05-26 | Krempa David | Chief Business Officer | Sell | 37.5K | $31.49 | $1.2M |
| 2026-05-22 | Krempa David | Chief Business Officer | Sell | 9.3K | $33.88 | $316K |
| 2026-05-22 | Krempa David | Chief Business Officer | Sell | 519 | $35.00 | $18K |
| 2026-05-22 | Krempa David | Chief Business Officer | Sell | 33.0K | $33.22 | $1.1M |
| 2026-05-22 | Krempa David | Chief Business Officer | Option exercise | 30.6K | $3.58 | $110K |
| 2026-04-21 | RIEDEL NORBERT G | - | Option exercise | 12.5K | $7.31 | $91K |
| 2026-04-21 | RIEDEL NORBERT G | - | Option exercise | 19.7K | $8.61 | $169K |
| 2026-02-03 | RIEDEL NORBERT G | - | X | 30.0K | $4.42 | $133K |
| 2026-01-14 | Gruber James R. | Chief Financial Officer | Tax withholding | 2.3K | $15.47 | $35K |
| 2026-01-14 | Krempa David | Chief Business Officer | Tax withholding | 1.9K | $15.62 | $30K |
| 2026-01-01 | BRYNJELSEN SEAN | President & CEO | Tax withholding | 5.0K | $15.39 | $77K |
| 2025-12-12 | Gruber James R. | Chief Financial Officer | Tax withholding | 4.5K | $16.99 | $77K |
| 2025-12-12 | Krempa David | Chief Business Officer | Tax withholding | 6.3K | $17.00 | $106K |
| 2025-12-12 | Erdogan-Trinkaus Ipek | Chief Commercial Officer | Tax withholding | 85 | $16.90 | $1K |
| 2025-12-12 | BRYNJELSEN SEAN | President & CEO | Tax withholding | 6.7K | $16.83 | $113K |
| 2025-08-20 | Gruber James R. | Chief Financial Officer | Sell | 2.6K | $16.02 | $42K |
| 2025-08-19 | Gruber James R. | Chief Financial Officer | Sell | 39.1K | $16.16 | $632K |
| 2025-06-16 | Krempa David | Chief Business Officer | Sell | 10.2K | $14.73 | $151K |
| 2025-06-13 | Krempa David | Chief Business Officer | Sell | 6.8K | $14.77 | $100K |
| 2025-06-12 | Krempa David | Chief Business Officer | Sell | 17.0K | $14.92 | $253K |
| 2025-06-10 | Opaleye Management Inc. | - | Buy | 5.0K | $15.82 | $79K |
| 2025-06-10 | Opaleye Management Inc. | - | Buy | 2.9K | $15.82 | $46K |
Understanding
Interpreting ETON insider filings
Officers, directors, and 10% owners of ETON must report every trade in their own stock to the SEC within two business days on Form 4. We parse each filing as it lands on EDGAR, so this page is the same primary-source record professionals read, minus the paywall.
The asymmetry that makes this data useful: insiders sell for dozens of innocent reasons (taxes, diversification, a house), but they voluntarily buy on the open market for exactly one reason. That is why buys are headlined and one-off sells deserve little weight.
The strongest historical pattern is the cluster: several different insiders buying within days of each other. A lone director's small buy is noise; the CFO and two directors buying the same week is a documented anomaly worth your attention.
Frequently Asked Questions
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Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.