// company-profile

Eton Pharmaceuticals, Inc.

ETON
ExchangeNasdaqSectorPharmaceutical PreparationsInc.DEFilings40Insiders9
// api This Eton Pharmaceuticals, Inc. insider-trading data is served live by the Form4API insider trading API. Get the same data via API.

// activity-summary

Recent insider activity is bullish. Over the last 30 days, 10 insiders purchased shares versus 5 sales. Buying was led by Adams Jennifer McKie.

// 90-day insight

Over the last 90 days, Eton Pharmaceuticals, Inc. insiders bought $654K (16 transactions) and sold $8.7M (8 transactions).

  • Most active insider: Krempa David with 15 transactions totaling $3.4M.
  • Largest single sale: $3.8M by BRYNJELSEN SEAN on May 28, 2026.

Activity skews bullish — buys outpace sales.

Institutional Ownership

Top 13F-HR holders of Eton Pharmaceuticals, Inc. as of 2026-03-31

↑ increasing
Total reported AUM
$421.7M
QoQ change
+74.0%
Reporting period
2026-03-31
#1
Opaleye Management Inc.
CIK 1595855
$70.6M
2.9M shares
#2
EcoR1 Capital, LLC
CIK 1587114
$53.6M
2.2M shares
#3
Nantahala Capital Management, LLC
CIK 1472322
$29.0M
1.2M shares

Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →

Insider Transactions

Sourced from SEC EDGAR Form 4 filings. Updated hourly.

DateInsiderCompanyTypeSharesPriceValue
Jun 17, 2026Adams Jennifer McKieETON
Option Exercise
50,000$0.00$0K
Jun 17, 2026Adams Jennifer McKieETON
Sale
50,000$32.48$1.62M
Jun 17, 2026Adams Jennifer McKieETON
Option Exercise
50,000$3.78$189K
May 28, 2026BRYNJELSEN SEANETON
Sale
119,852$31.88$3.82M
May 28, 2026BRYNJELSEN SEANETON
Sale
148$32.67$5K

45 more transactions hidden

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