Sean Brynjelsen Eton Pharmaceuticals, Inc. (ETON) insider trading activity

Sean Brynjelsen is President & CEO of Eton Pharmaceuticals, Inc.. Currently has a direct ownership of 2.89 Million shares of ETON, which is worth approximately $48.9 Million. The most recent transaction as insider was on Dec 12, 2025, when has been sold 6,732 shares (Common Stock) at a price of $16.83 per share, resulting in proceeds of $113,299. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 2.89M

0.72% 3M change

178.3% 12M change

Total Value Held $48.9 Million

SEAN BRYNJELSEN Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Dec 12 2025	SELL Payment of exercise price or tax liability	$113,299 $16.83 p/Share	6,732 Reduced 0.23%	2,894,281 Common Stock
Jun 05 2025	SELL Open market or private sale	$1,176,700 $16.81 p/Share	70,000 Reduced 2.38%	2,873,513 Common Stock
Jun 04 2025	SELL Open market or private sale	$1,190,000 $17.0 p/Share	70,000 Reduced 2.32%	2,943,513 Common Stock
Jun 03 2025	SELL Open market or private sale	$1,278,200 $18.26 p/Share	70,000 Reduced 2.27%	3,013,513 Common Stock
Sep 22 2022	BUY Open market or private purchase	$21,000 $2.1 p/Share	10,000 Added 0.95%	1,040,000 Common Stock
Aug 20 2021	BUY Open market or private purchase	$43,200 $4.32 p/Share	10,000 Added 0.96%	1,030,000 Common Stock
Jun 03 2021	BUY Open market or private purchase	$29,800 $5.96 p/Share	5,000 Added 0.48%	1,030,000 Common Stock

Sean Brynjelsen

President & CEO

Deer Park, IL

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