ETON

Eton Pharmaceuticals, Inc.$54.59-3.03 (-5.26%)

Prev Close$57.62·MCap$1.61B·P/E—·Vol283.9K·Yield—

▲

Buys (12M)

$0.00

▼

Sells (12M)

$25.75M

◆

Net Activity

Net Seller

$25.75M

●

Active Insiders

last 12 mo

Over the past 12 months, insider activity at Eton Pharmaceuticals, Inc. (ETON) has been exclusively selling, with 0 insider purchases totaling $0.00 and 16 insider sales totaling $25.75M. The most recent insider transaction was by MAIER PAUL V (director), who sold $2.95M worth of shares on Aug 28, 2026. Eton Pharmaceuticals, Inc. operates in the Healthcare sector, within the Drug Manufacturers - Specialty & Generic industry, with a market cap of $1.61B.

ETON Insider Trading Activity

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Aug 28, 2026	MAIER PAUL V	director	Sell	50,000	$59.07	$2.95M	73,358-41%
Aug 24, 2026	Krempa David	officer: Chief Business Officer	Sell	25,000	$65.07	$1.63M	37,025-40%
Aug 20, 2026	BRYNJELSEN SEAN	director, officer: President & CEO	Sell	100,000	$60.88	$6.09M	1,052,216
Jul 16, 2026	Opaleye Management Inc.	10 percent owner	Sell	28,315	$37.54	$1.06M	2,665,000
Jul 7, 2026	Opaleye Management Inc.	10 percent owner	Sell	126,685	$37.64	$4.77M	2,710,000
Jun 17, 2026	Adams Jennifer McKie	director	Sell	50,000	$32.48	$1.62M	0Exit
May 29, 2026	BRYNJELSEN SEAN	director, officer: President & CEO	Sell	120,000	$31.88	$3.83M	833,842
May 27, 2026	Krempa David	officer: Chief Business Officer	Sell	100,000	$32.30	$3.23M	35,083-74%
Feb 3, 2026	RIEDEL NORBERT G	Director	Sell	30,000	$4.42	$132.6K	0
Jan 12, 2026	BRYNJELSEN SEAN	President & CEO	Sell	5,015	$15.39	$77.2K	0
Jan 12, 2026	Gruber James R.	Chief Financial Officer	Sell	2,293	$15.47	$35.5K	0
Jan 12, 2026	Krempa David	Chief Business Officer	Sell	1,942	$15.62	$30.3K	0
Dec 12, 2025	BRYNJELSEN SEAN	President & CEO	Sell	6,732	$16.83	$113.3K	0
Dec 11, 2025	Erdogan-Trinkaus Ipek	Chief Commercial Officer	Sell	85	$16.90	$1.4K	0
Dec 11, 2025	Gruber James R.	Chief Financial Officer	Sell	4,542	$16.99	$77.2K	0
Dec 11, 2025	Krempa David	Chief Business Officer	Sell	6,264	$17.00	$106.5K	0
Aug 19, 2025	Gruber James R.	Chief Financial Officer	Sell	41,713	$16.15	$673.7K	0
Jun 12, 2025	Krempa David	Chief Business Officer	Sell	34,000	$14.83	$504.3K	0
Jun 3, 2025	BRYNJELSEN SEAN	President & CEO	Sell	210,000	$17.11	$3.59M0.8% OS	0
Sep 22, 2022	BRYNJELSEN SEAN	Chief Executive Officer	Buy	10,000	$2.10	$21.0K	1,040,000
Aug 20, 2021	BRYNJELSEN SEAN	President & CEO	Buy	10,000	$4.32	$43.2K	1,030,000
Aug 20, 2021	Troutman William Wilson	CFO, Treasurer & Secretary	Buy	5,000	$4.43	$22.1K	23,027+28%
Jun 3, 2021	BRYNJELSEN SEAN	President & CEO	Buy	5,000	$5.96	$29.8K	1,030,000

ETON Insider Buying Activity

The following table shows recent insider purchases of Eton Pharmaceuticals, Inc. (ETON) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Sep 22, 2022	BRYNJELSEN SEAN	Chief Executive Officer	Buy	10,000	$2.10	$21.0K	1,040,000
Aug 20, 2021	BRYNJELSEN SEAN	President & CEO	Buy	10,000	$4.32	$43.2K	1,030,000
Aug 20, 2021	Troutman William Wilson	CFO, Treasurer & Secretary	Buy	5,000	$4.43	$22.1K	23,027+28%
Jun 3, 2021	BRYNJELSEN SEAN	President & CEO	Buy	5,000	$5.96	$29.8K	1,030,000

ETON Insider Selling Activity

The following table shows recent insider sales of Eton Pharmaceuticals, Inc. (ETON) stock reported via SEC Form 4 filings.

Date	Insider	Role	Type	Shares	Avg Price	Value	Shares After
Aug 28, 2026	MAIER PAUL V	director	Sell	50,000	$59.07	$2.95M	73,358-41%
Aug 24, 2026	Krempa David	officer: Chief Business Officer	Sell	25,000	$65.07	$1.63M	37,025-40%
Aug 20, 2026	BRYNJELSEN SEAN	director, officer: President & CEO	Sell	100,000	$60.88	$6.09M	1,052,216
Jul 16, 2026	Opaleye Management Inc.	10 percent owner	Sell	28,315	$37.54	$1.06M	2,665,000
Jul 7, 2026	Opaleye Management Inc.	10 percent owner	Sell	126,685	$37.64	$4.77M	2,710,000
Jun 17, 2026	Adams Jennifer McKie	director	Sell	50,000	$32.48	$1.62M	0Exit
May 29, 2026	BRYNJELSEN SEAN	director, officer: President & CEO	Sell	120,000	$31.88	$3.83M	833,842
May 27, 2026	Krempa David	officer: Chief Business Officer	Sell	100,000	$32.30	$3.23M	35,083-74%
Feb 3, 2026	RIEDEL NORBERT G	Director	Sell	30,000	$4.42	$132.6K	0
Jan 12, 2026	BRYNJELSEN SEAN	President & CEO	Sell	5,015	$15.39	$77.2K	0
Jan 12, 2026	Gruber James R.	Chief Financial Officer	Sell	2,293	$15.47	$35.5K	0
Jan 12, 2026	Krempa David	Chief Business Officer	Sell	1,942	$15.62	$30.3K	0
Dec 12, 2025	BRYNJELSEN SEAN	President & CEO	Sell	6,732	$16.83	$113.3K	0
Dec 11, 2025	Erdogan-Trinkaus Ipek	Chief Commercial Officer	Sell	85	$16.90	$1.4K	0
Dec 11, 2025	Gruber James R.	Chief Financial Officer	Sell	4,542	$16.99	$77.2K	0
Dec 11, 2025	Krempa David	Chief Business Officer	Sell	6,264	$17.00	$106.5K	0
Aug 19, 2025	Gruber James R.	Chief Financial Officer	Sell	41,713	$16.15	$673.7K	0
Jun 12, 2025	Krempa David	Chief Business Officer	Sell	34,000	$14.83	$504.3K	0
Jun 3, 2025	BRYNJELSEN SEAN	President & CEO	Sell	210,000	$17.11	$3.59M0.8% OS	0