Stehman-Breen Catherine Insider Trading Activity (DYN)

Summary

Updated Jul 16, 2026

Stehman-Breen Catherine has filed 2 SEC Form 4 filings across 2 companies in the last 90 days.

Date	Ticker	Company	Code	Shares	Price	Value
2026-02-09	GBIO	Generation Bio Co.	J — Other acquisition / disposition	4.8K	—

Companies — Last 90 Days

Dyne Therapeutics, Inc. (DYN) — 1 filings, last 2026-06-09
Tenaya Therapeutics, Inc. (TNYA) — 1 filings, last 2026-05-29

Frequently Asked Questions

Who is Stehman-Breen Catherine?

Stehman-Breen Catherine is a corporate insider — currently tracked as Insider of Dyne Therapeutics, Inc. (DYN). InsiderAlpha tracks every SEC Form 4 filing in real time.

How many SEC Form 4 filings has Stehman-Breen Catherine submitted recently?

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

Where can I see all of Stehman-Breen Catherine'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.

Stehman-Breen Catherine — SEC Form 4 Insider Trading Activity