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CIK 0001710340 · Non-accelerated filer<br>Smaller reporting company

Eton Pharmaceuticals, Inc.

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Ticker
ETON
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
371858472
Phone
(847) 787-7361
Business address
21925 W. FIELD PARKWAY, SUITE 235, DEER PARK, IL, 60010-7278
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$19,432,082
in 7 filings

Net −$19,432,082. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. BRYNJELSEN SEAN −$6.1M President & CEO sold 9% of stake
  2. MAIER PAUL V −$5.9M Director sold 63% of stake
  3. CASAMENTO CHARLES J −$5.3M Director sold 100% of stake
  4. Krempa David −$1.9M Chief Business Officer sold 40% of stake
  5. Erdogan-Trinkaus Ipek −$236K Chief Commercial Officer sold 46% of stake
Date Insider Transaction Shares Price Value Owned after
2026-07-02 Opaleye Management Inc. 10% owner Sale −65,000 $37.39 $2.4M 2,710,000
2026-07-02 Opaleye Management Inc. 10% owner Sale −25,000 $37.39 $935K 60,000
2026-06-26 Krempa David Chief Business Officer Grant or award · Restricted Stock Units +10,000 96,829
2026-06-17 Adams Jennifer McKie Director Option exercise +50,000 $3.78 $189K 50,000
2026-06-17 Adams Jennifer McKie Director Sale −50,000 $32.48 $1.6M 0
2026-06-17 Adams Jennifer McKie Director Option exercise · Employee Stock Option −50,000 0
2026-05-28 BRYNJELSEN SEAN President & CEO Sale −119,852 $31.88 $3.8M 833,842
2026-05-28 BRYNJELSEN SEAN President & CEO Sale −148 $32.67 $5K 833,694
2026-05-27 Krempa David Chief Business Officer Option exercise +12,476 $1.37 $17K 37,725
2026-05-27 Krempa David Chief Business Officer Option exercise +7,203 $3.58 $26K 44,928
2026-05-27 Krempa David Chief Business Officer Sale −19,679 $31.47 $619K 25,249
2026-05-27 Krempa David Chief Business Officer Option exercise · Employee Stock Option −12,476 0
2026-05-27 Krempa David Chief Business Officer Option exercise · Employee Stock Option −7,203 118,406
2026-05-26 Krempa David Chief Business Officer Option exercise +25,000 $1.38 $35K 50,249
2026-05-26 Krempa David Chief Business Officer Option exercise +12,524 $1.37 $17K 62,773
2026-05-26 Krempa David Chief Business Officer Sale −37,524 $31.49 $1.2M 25,249
2026-05-26 Krempa David Chief Business Officer Option exercise · Employee Stock Option −25,000 0
2026-05-26 Krempa David Chief Business Officer Option exercise · Employee Stock Option −12,524 12,476
2026-05-22 Krempa David Chief Business Officer Option exercise +30,591 $3.58 $110K 68,046
2026-05-22 Krempa David Chief Business Officer Sale −32,963 $33.22 $1.1M 35,083

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