BRYNJELSEN SEAN — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

BRYNJELSEN SEAN has filed 2 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $3.83M.

Profile

BRYNJELSEN SEAN

Sean Brynjelsen is the President & Chief Executive Officer and a Director of Eton Pharmaceuticals, Inc., and is listed as a 10% owner in the company’s SEC filing dated January 14, 2026. Eton is a specialty pharmaceutical company focused on developing and commercializing therapies for rare diseases, including Alkindi Sprinkle, Carglumic Acid, Betaine Anhydrous, and Nitisinone. The SEC filing notes that Brynjelsen had no reported purchases or sales in that filing cycle.

RolePresident & CEO, Director
Notability25/100

Board memberships

Awards & honors

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2026-07-14ETONEton Pharmaceuticals, Inc.M — Option exercise200.0K$1.37$274K
2026-07-14ETONEton Pharmaceuticals, Inc.M — Option exercise27.5K
2026-05-29ETONEton Pharmaceuticals, Inc.S — Open-market sale148$32.67$5K
2026-05-29ETONEton Pharmaceuticals, Inc.S — Open-market sale119.9K$31.88$3.82M
2026-01-14ETONEton Pharmaceuticals, Inc.F — Tax withholding / forfeiture5.0K$15.39$77K

Companies — Last 90 Days

Frequently Asked Questions

Who is BRYNJELSEN SEAN?

Sean Brynjelsen is the President & Chief Executive Officer and a Director of Eton Pharmaceuticals, Inc., and is listed as a 10% owner in the company’s SEC filing dated January 14, 2026. Eton is a specialty pharmaceutical company focused on developing and commercializing therapies for rare diseases, including Alkindi Sprinkle, Carglumic Acid, Betaine Anhydrous, and Nitisinone. T…

How many SEC Form 4 filings has BRYNJELSEN SEAN submitted recently?

2 primary Form 4 filings in the last 90 days, covering 1 company.

Has BRYNJELSEN SEAN been buying or selling stock?

Recorded transactions: 0 open-market purchases () and 2 open-market sales ($3.83M) across all tracked filings.

Where can I see all of BRYNJELSEN SEAN's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

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