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Eton Pharmaceuticals, Inc.

ETON
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001710340

In the last 90 days, Eton Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 5 sales; 164 institutions reported holding it in 13F filings for Q2 2026, worth $722.6M in total; no superinvestor holds it.

Key figures

Insider buysOpen market, last 90 days
0
Insider sellsLast 90 days, $16.5M in total
5
13F holdersQ2 2026, +49 vs. previous quarter
164
13F valueReported value at the end of Q2 2026
$722.6M
Superinvestors holdingAt the end of Q2 2026
0

Price chart

Superinvestors holding ETON, Q2 2026

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No superinvestor reported holding ETON at the end of Q2 2026.

Latest insider trades

Open-market purchases and sales by Eton Pharmaceuticals, Inc. insiders from Form 4, newest first.

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Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Aug 31, 2026 (view filing)4:06 PM ETAug 283 daysMaier Paul VDirectorSSale−50.0K$59.07−$2.95M−45.6%59.7K afterAmended3 lots
Aug 24, 2026 (view filing)5:19 PM ETAug 24Same dayKrempa DavidChief Business OfficerSSale−25.0K$65.07−$1.63M−40.3%37.0K after
Aug 20, 2026 (view filing)6:26 PM ETAug 19-201 dayBrynjelsen SeanPresident & CEOSSale−100.0K$60.88−$6.09M−9.4%961.2K after4 lots
Jul 17, 2026 (view filing)7:12 PM ETJul 143 daysOpaleye Management Inc.10% OwnerSSaleCommon Stock, par value $0.001 per share−28.3K$37.54−$1.06M−41.4%40.0K afterAmended2 lots
Jul 7, 2026 (view filing)6:29 PM ETJul 2-75 daysOpaleye Management Inc.10% OwnerSSaleCommon Stock, par value $0.001 per share−126.7K$37.64−$4.77M−70.4%53.3K after5 lots
Jun 17, 2026 (view filing)Jun 17Same dayAdams Jennifer McKieDirectorSSale−50.0K$32.48−$1.62M−100.0%0 after
May 29, 2026 (view filing)May 281 dayBrynjelsen SeanPresident & CEOSSale−120.0K$31.88−$3.83M−12.6%833.7K after2 lots
May 27, 2026 (view filing)May 22-275 daysKrempa DavidChief Business OfficerSSale−100.0K$32.30−$3.23M−79.8%25.2K after5 lots
Aug 20, 2025 (view filing)Aug 19-201 dayGruber James R.Chief Financial OfficerSSale−41.7K$16.15−$673.7K−16.9%204.8K after2 lots
Jun 16, 2025 (view filing)Jun 12-164 daysKrempa DavidChief Business OfficerSSale−34.0K$14.83−$504.3K−5.3%612.6K after3 lots

Top 10 13F holders, Q2 2026

The largest institutional positions in Eton Pharmaceuticals, Inc. at the end of Q2 2026; share changes are against Q1 2026.

See all 164 holders
Institutions holding ETON in Q2 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Opaleye Management Inc.2,860,000$103.5M9.38%00.0%Unchanged
EcoR1 Capital, LLC2,171,938$78.6M3.90%00.0%Unchanged
BlackRock, Inc.1,895,833$68.6M0.00%+178,547+10.4%Added
Nantahala Capital Management, LLC1,175,951$42.6M2.57%00.0%Unchanged
Vanguard Capital Management LLC976,570$35.4M0.00%−17,519−1.8%Reduced
Morgan Stanley767,972$27.8M0.00%+290,015+60.7%Added
State Street Corp701,786$25.4M0.00%+171,571+32.4%Added
Geode Capital Management, LLC652,303$23.6M0.00%+74,637+12.9%Added
Oberweis Asset Management Inc501,600$18.2M0.38%+62,300+14.2%Added
National Philanthropic Trust492,112$17.8M0.26%00.0%Unchanged