Eton Pharmaceuticals Ownership & Insider Activity

Eton Pharmaceuticals (ETON) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 7.9% of shares outstanding. Institutional investors hold 31.8%. Over the past 90 days, insiders made 1 sale worth $6.1M.

Shares Outstanding

28.583M

Shares Float

20.672M

Insider Shares Owned

2.252M

Insider % Owned

7.9%

Institutional Shares Held

9.103M

Institutional % Held

31.8%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$6.1M total

Net Activity

Net Selling

Net Value (90d)

-$6.1M

Eton Pharmaceuticals Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 2, 2026	David Krempa	CHIEF BUSINESS OFFICER	SELL-OPTIONS	6.356K	$55.07	$229K
Aug 28, 2026	PAUL MAIER V	DIRECTOR	SELL-OPTIONS	—	$31.43	$2.8M
Aug 24, 2026	David Krempa	CHIEF BUSINESS OFFICER	SELL-OPTIONS	—	$36.19	$1.4M
Aug 19, 2026	SEAN BRYNJELSEN	PRESIDENT & CEO	SELL	100.000K	$60.88	$6.1M
Jul 14, 2026	Opaleye Management Inc	10% OWNER	SELL	28.315K	$37.54	$1.1M
Jul 2, 2026	Opaleye Management Inc	10% OWNER	SELL	126.685K	$37.64	$4.8M
Jun 17, 2026	McKie Jennifer Adams	DIRECTOR	SELL-OPTIONS	—	$18.13	$1.4M
May 28, 2026	SEAN BRYNJELSEN	PRESIDENT & CEO	SELL	120.000K	$31.88	$3.8M
May 22, 2026	David Krempa	CHIEF BUSINESS OFFICER	SELL	12.206K	$17.31	$3.0M