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Eton Pharmaceuticals, Inc.

ETON Net selling

CIK 0001710340 #2154 in the set updated 17 Sep 2026

Bought (1 mo)

$0.00

out of their own pocket, the only kind of buying there is

Sold (1 mo)

$10.67M

$0.00 on a plan · $4.58M straight out of an exercise

Sold at will

$6.09M

4 of 8 sales

Net

−$10.67M

−$6.09M against sales at will

By person

8 insiders · 8 transactions

83.3×

Sean E. Brynjelsen holds 83.3 times base salary in stock. $59.37M of shares against $712.43K in salary for 2025.

Salary from the company's own proxy. The shares are what Sean E. Brynjelsen last reported holding, valued at $61.77, the price Common Stock was last bought or sold at on the open market here, on 28 Aug 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

BRYNJELSEN SEAN

President & CEO

—

$6.09M (4)

−$6.09M

961,194

3.36%

$59.37M

−18.2%

MAIER PAUL V

Director

—

$2.95M (3) scheduled

−$2.95M

59,745

0.2090%

$3.69M

0.0%

Krempa David

Chief Business Officer

—

$1.63M (1) scheduled

−$1.63M

37,025

0.1295%

$2.29M

−54.5%

Gruber James R.

Chief Financial Officer

—

213,420

0.7467%

$13.18M

−18.5%

RIEDEL NORBERT G

Director

—

67,155

0.2349%

$4.15M

—

Opaleye Management Inc. entity

10% owner

—

40,000

0.1399%

$2.47M

−65.2%

Erdogan-Trinkaus Ipek

Chief Commercial Officer

—

2,403

0.0084%

$148.43K

−3.4%

Adams Jennifer McKie

Director

—

0.0000%

$0.00

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

MAIER PAUL V

28 Aug 2026

Director

Sold after exercise

128

$61.77

$7.91K

MAIER PAUL V

28 Aug 2026

Director

Sold after exercise

13,485

$60.21

$811.93K

MAIER PAUL V

28 Aug 2026

Director

Sold after exercise

36,387

$58.64

$2.13M

Krempa David

24 Aug 2026

Chief Business Officer

Sold after exercise

25,000

$65.07

$1.63M

BRYNJELSEN SEAN

20 Aug 2026

President & CEO

Sell

7,342

$62.12

$456.09K

BRYNJELSEN SEAN

20 Aug 2026

President & CEO

Sell

36,373

$61.11

$2.22M

BRYNJELSEN SEAN

20 Aug 2026

President & CEO

Sell

47,307

$60.17

$2.85M

BRYNJELSEN SEAN

19 Aug 2026

President & CEO

Sell

8,978

$62.65

$562.47K

What was left out

Form 4 filings counted 3

Amendments (4/A) skipped 1

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 4

Sales at will 4

Transactions with no price 0

Shares from compensation/vesting 75,000

History held since 15 Nov 2018