Insider Trading › ETON › Insiders
Eton Pharmaceuticals, Inc.
ETON·Nasdaq·
United States·Insider activity
United States·Insider activity$54.77
-0.85 (-1.53%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
ETON
Insider purchases and sales on the price
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
ETONS&P 500 (rebased)
Insider BuyInsider SellForm 144 · planned sale
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
In the last 180 days, ETON insiders filed 0 purchases ($0) and 19 sales ($21.4M) on the open market, by 4 insiders. Newest filing Oct 6, 2026 (yesterday).
Net Insider Buying by Quarter
Shares bought (+) or sold (−) on the open market by ETON insiders · Form 4 · last two years
On Record
$0Purchases · 180 days
$21.4MSales · 180 days
104Open-market transactions on record
4Insiders filing · 180 days
Purchases (code P) and sales (code S) of ETON common stock reported on Form 4, with Form 5 annual catch-ups. Grants, option exercises, gifts and tax withholding are not shown. Dollars are shares × the stated price; a price outside anything the stock traded at that day is withheld (n/c).
Insider Transactions
104 on record · newest trade first · the newest 99 shown
AllPurchasesSalesOfficers & directors
| Insider | Type | Shares | Price | Value | Held after | Traded | Filed | |
|---|---|---|---|---|---|---|---|---|
| Krempa DavidChief Business Officer | Sale | −4,166 | $55.07 | $229K | 43.4Kdirect | Oct 6, 2026 | Oct 6, 2026 | Form 4 ↗ |
| MAIER PAUL VDirector · Director | Sale Amended | −36.4K | $58.64 | $2.1M | 73.4Kdirect | Aug 28, 2026 | Aug 31, 2026 | Form 4 ↗ |
| MAIER PAUL VDirector · Director | Sale Amended | −13.5K | $60.21 | $812K | 59.9Kdirect | Aug 28, 2026 | Aug 31, 2026 | Form 4 ↗ |
| MAIER PAUL VDirector · Director | Sale Amended | −128 | $61.77 | $8K | 59.7Kdirect | Aug 28, 2026 | Aug 31, 2026 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −25.0K | $65.07 | $1.6M | 37.0Kdirect | Aug 24, 2026 | Aug 24, 2026 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Sale | −7,342 | $62.12 | $456K | 961.2Kdirect | Aug 20, 2026 | Aug 20, 2026 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Sale | −47.3K | $60.17 | $2.8M | 1.0Mdirect | Aug 20, 2026 | Aug 20, 2026 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Sale | −36.4K | $61.11 | $2.2M | 968.5Kdirect | Aug 20, 2026 | Aug 20, 2026 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Sale | −8,978 | $62.65 | $562K | 1.1Mdirect | Aug 19, 2026 | Aug 20, 2026 | Form 4 ↗ |
| Opaleye Management Inc. | Sale Amended | −15.0K | $37.54 | $563K | 2.7Mindirect | Jul 14, 2026 | Jul 17, 2026 | Form 4 ↗ |
| Opaleye Management Inc. | Sale Amended | −13.3K | $37.54 | $500K | 40.0Kindirect | Jul 14, 2026 | Jul 17, 2026 | Form 4 ↗ |
| Opaleye Management Inc. | Sale | −6,685 | $38.37 | $257K | 53.3Kindirect | Jul 7, 2026 | Jul 7, 2026 | Form 4 ↗ |
| Opaleye Management Inc. | Sale | −20.0K | $38.37 | $767K | 2.7Mindirect | Jul 7, 2026 | Jul 7, 2026 | Form 4 ↗ |
| Opaleye Management Inc. | Sale | −10.0K | $38.00 | $380K | 2.7Mindirect | Jul 6, 2026 | Jul 7, 2026 | Form 4 ↗ |
| Opaleye Management Inc. | Sale | −65.0K | $37.39 | $2.4M | 2.7Mindirect | Jul 2, 2026 | Jul 7, 2026 | Form 4 ↗ |
| Opaleye Management Inc. | Sale | −25.0K | $37.39 | $935K | 60.0Kindirect | Jul 2, 2026 | Jul 7, 2026 | Form 4 ↗ |
| Adams Jennifer McKieDirector | Sale | −50.0K | $32.48 | $1.6M | 0direct | Jun 17, 2026 | Jun 17, 2026 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Sale | −148 | $32.67 | $5K | 833.7Kdirect | May 28, 2026 | May 29, 2026 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Sale | −119.9K | $31.88 | $3.8M | 833.8Kdirect | May 28, 2026 | May 29, 2026 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −19.7K | $31.47 | $619K | 25.2Kdirect | May 27, 2026 | May 27, 2026 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −37.5K | $31.49 | $1.2M | 25.2Kdirect | May 26, 2026 | May 27, 2026 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −519 | $35.00 | $18K | 25.2Kdirect | May 22, 2026 | May 27, 2026 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −9,315 | $33.88 | $316K | 25.8Kdirect | May 22, 2026 | May 27, 2026 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −33.0K | $33.22 | $1.1M | 35.1Kdirect | May 22, 2026 | May 27, 2026 | Form 4 ↗ |
| Gruber James R.Chief Financial Officer | Sale | −2,631 | $16.02 | $42K | 204.8Kdirect | Aug 20, 2025 | Aug 20, 2025 | Form 4 ↗ |
| Gruber James R.Chief Financial Officer | Sale | −39.1K | $16.16 | $632K | 205.3Kdirect | Aug 19, 2025 | Aug 20, 2025 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −10.2K | $14.73 | $151K | 612.6Kdirect | Jun 16, 2025 | Jun 16, 2025 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −6,800 | $14.77 | $100K | 622.9Kdirect | Jun 13, 2025 | Jun 16, 2025 | Form 4 ↗ |
| Krempa DavidChief Business Officer | Sale | −17.0K | $14.92 | $253K | 629.7Kdirect | Jun 12, 2025 | Jun 16, 2025 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +2,930 | $15.82 | $46K | 85.0Kindirect | Jun 10, 2025 | Jun 12, 2025 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +5,000 | $15.82 | $79K | 2.8Mindirect | Jun 10, 2025 | Jun 12, 2025 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director · 10% owner | Sale | −70.0K | $16.81 | $1.2M | 2.9Mdirect | Jun 5, 2025 | Jun 5, 2025 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director · 10% owner | Sale | −70.0K | $17.00 | $1.2M | 2.9Mdirect | Jun 4, 2025 | Jun 5, 2025 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director · 10% owner | Sale | −400 | $19.02 | $8K | 3.0Mdirect | Jun 3, 2025 | Jun 5, 2025 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director · 10% owner | Sale | −8,655 | $18.38 | $159K | 3.0Mdirect | Jun 3, 2025 | Jun 5, 2025 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director · 10% owner | Sale | −60.9K | $17.38 | $1.1M | 3.0Mdirect | Jun 3, 2025 | Jun 5, 2025 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +10.0K | $7.98 | $80K | 2.8Mindirect | Oct 23, 2024 | Oct 25, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +3,970 | $7.03 | $28K | 82.1Kindirect | Oct 8, 2024 | Oct 8, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +30.0K | $7.03 | $211K | 2.8Mindirect | Oct 8, 2024 | Oct 8, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +1,248 | $7.22 | $9K | 78.1Kindirect | Oct 7, 2024 | Oct 8, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +10.0K | $7.22 | $72K | 2.7Mindirect | Oct 7, 2024 | Oct 8, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +1,852 | $6.77 | $13K | 76.9Kindirect | Oct 4, 2024 | Oct 8, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +15.0K | $6.77 | $102K | 2.7Mindirect | Oct 4, 2024 | Oct 8, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +5,000 | $4.75 | $24K | 75.0Kindirect | Sep 11, 2024 | Sep 12, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +45.0K | $4.75 | $214K | 2.7Mindirect | Sep 11, 2024 | Sep 12, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +7,500 | $4.65 | $35K | 70.0Kindirect | Sep 10, 2024 | Sep 12, 2024 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +50.0K | $4.65 | $233K | 2.7Mindirect | Sep 10, 2024 | Sep 12, 2024 | Form 4 ↗ |
| BRYNJELSEN SEANChief Executive Officer · Director | Purchase | +10.0K | $2.10 | $21K | 1.0Mdirect | Sep 22, 2022 | Sep 23, 2022 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −25.0K | $4.67 | $117K | 2.4Mindirect | Nov 17, 2021 | Nov 19, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −938 | $4.86 | $5K | 85.0Kindirect | Nov 16, 2021 | Nov 17, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −11.5K | $4.86 | $56K | 2.4Mindirect | Nov 16, 2021 | Nov 17, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −500 | $4.80 | $2K | 85.9Kindirect | Nov 15, 2021 | Nov 17, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −2,500 | $4.80 | $12K | 2.4Mindirect | Nov 15, 2021 | Nov 17, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −2,661 | $6.10 | $16K | 86.4Kindirect | Nov 8, 2021 | Nov 9, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −50.0K | $6.10 | $305K | 2.4Mindirect | Nov 8, 2021 | Nov 9, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −8,401 | $6.30 | $53K | 89.1Kindirect | Nov 5, 2021 | Nov 9, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −159.3K | $6.30 | $1.0M | 2.5Mindirect | Nov 5, 2021 | Nov 9, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −4,000 | $6.44 | $26K | 97.5Kindirect | Nov 4, 2021 | Nov 5, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −81.7K | $6.44 | $526K | 2.6Mindirect | Nov 4, 2021 | Nov 5, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −6,500 | $6.53 | $42K | 101.5Kindirect | Nov 3, 2021 | Nov 5, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −110.0K | $6.53 | $718K | 2.7Mindirect | Nov 3, 2021 | Nov 5, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −4,807 | $5.06 | $24K | 117.1Kindirect | Oct 12, 2021 | Oct 13, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −82.5K | $5.06 | $417K | 2.8Mindirect | Oct 12, 2021 | Oct 13, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −1,601 | $5.01 | $8K | 112.8Kindirect | Oct 11, 2021 | Oct 13, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −32.5K | $5.01 | $163K | 2.9Mindirect | Oct 11, 2021 | Oct 13, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −2,692 | $5.00 | $13K | 114.4Kindirect | Oct 8, 2021 | Oct 13, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −41.0K | $5.00 | $205K | 2.9Mindirect | Oct 8, 2021 | Oct 13, 2021 | Form 4 ↗ |
| Troutman William WilsonCFO, Treasurer & Secretary | Purchase | +5,000 | $4.43 | $22K | 23.0Kdirect | Aug 20, 2021 | Aug 20, 2021 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Purchase | +10.0K | $4.32 | $43K | 1.0Mdirect | Aug 20, 2021 | Aug 20, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −15.0K | $5.84 | $88K | 117.1Kindirect | Aug 6, 2021 | Aug 6, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −330.0K | $5.84 | $1.9M | 3.0Mindirect | Aug 6, 2021 | Aug 6, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −5,500 | $5.85 | $32K | 132.1Kindirect | Aug 5, 2021 | Aug 6, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −150.0K | $5.85 | $878K | 3.3Mindirect | Aug 5, 2021 | Aug 6, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −4,000 | $5.75 | $23K | 137.6Kindirect | Aug 4, 2021 | Aug 6, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −100.0K | $5.75 | $575K | 3.5Mindirect | Aug 4, 2021 | Aug 6, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale Amended | −4,000 | $8.07 | $32K | 141.6Kindirect | Jun 15, 2021 | Jun 21, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale Amended | −101.0K | $8.07 | $815K | 3.6Mindirect | Jun 15, 2021 | Jun 21, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −4,000 | $8.07 | $32K | 141.6Kindirect | Jun 15, 2021 | Jun 17, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −101.0K | $8.07 | $815K | 3.6Mindirect | Jun 15, 2021 | Jun 17, 2021 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Purchase | +5,000 | $5.96 | $30K | 1.0Mdirect | Jun 3, 2021 | Jun 3, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −4,600 | $8.49 | $39K | 145.6Kindirect | May 27, 2021 | May 27, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −121.4K | $8.49 | $1.0M | 3.7Mindirect | May 27, 2021 | May 27, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −2,800 | $8.57 | $24K | 150.2Kindirect | May 26, 2021 | May 27, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −65.5K | $8.57 | $561K | 3.8Mindirect | May 26, 2021 | May 27, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −2,000 | $8.53 | $17K | 153.0Kindirect | May 25, 2021 | May 27, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Sale | −46.0K | $8.53 | $392K | 3.8Mindirect | May 25, 2021 | May 27, 2021 | Form 4 ↗ |
| HARROW HEALTH, INC.10% owner | Sale | −1.5M | n/c | — | 2.0Mdirect | Apr 12, 2021 | Apr 12, 2021 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +15.0K | $7.00 | $105K | 155.0Kindirect | Oct 16, 2020 | Oct 16, 2020 | Form 4 ↗ |
| Opaleye Management Inc.10% owner | Purchase | +385.0K | $7.00 | $2.7M | 3.9Mindirect | Oct 16, 2020 | Oct 16, 2020 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Purchase | +5,000 | $6.15 | $31K | 1.0Mdirect | Aug 13, 2019 | Aug 13, 2019 | Form 4 ↗ |
| CASAMENTO CHARLES JDirector | Purchase | +3,500 | $6.11 | $21K | 71.9Kdirect | Aug 9, 2019 | Aug 12, 2019 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Purchase | +8,600 | $7.96 | $68K | 1.0Mdirect | May 21, 2019 | May 22, 2019 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Purchase | +1,400 | $7.78 | $11K | 1.0Mdirect | May 20, 2019 | May 22, 2019 | Form 4 ↗ |
| CASAMENTO CHARLES JDirector | Purchase | +5,000 | $6.00 | $30K | 68.4Kdirect | Nov 15, 2018 | Nov 15, 2018 | Form 4 ↗ |
| BRYNJELSEN SEANPresident & CEO · Director | Purchase | +10.0K | $6.00 | $60K | 1.0Mdirect | Nov 15, 2018 | Nov 15, 2018 | Form 4 ↗ |
| MAIER PAUL VDirector | Purchase | +5,000 | $6.00 | $30K | 59.7Kdirect | Nov 15, 2018 | Nov 15, 2018 | Form 4 ↗ |
| RIEDEL NORBERT GDirector | Purchase | +5,000 | $6.00 | $30K | 59.7Kdirect | Nov 15, 2018 | Nov 15, 2018 | Form 4 ↗ |
| Troutman William WilsonCFO, Treasurer & Secretary | Purchase | +5,000 | $6.00 | $30K | 5,000direct | Nov 15, 2018 | Nov 15, 2018 | Form 4 ↗ |
| BAUM MARK LDirector | Purchase | +10.0K | $6.00 | $60K | 10.0Kindirect | Nov 15, 2018 | Nov 15, 2018 | Form 4 ↗ |
Source: SEC EDGAR Form 4 and Form 5 filings, SEC's quarterly bulk dataset through Jun 30, 2026, and KeyVex's half-hourly read of new filings since. Every row links its filing. Amendments are marked. Nothing here is a recommendation. All insider activity, market-wide →