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DYNE THERAPEUTICS INC (DYN)

Institutional ownership, SEC filings and insider activity

Sector: Healthcare & Pharma · SEC CIK 0001818794 · EDGAR filings · Updated 2026-07-28

DYNE THERAPEUTICS INC (DYN) has reported institutional ownership of 113.7%, with 227 institutional managers holding positions valued at $3.40B per the latest 13F reporting period. SEC filings include an active substantial-doubt (going concern) disclosure per the filings.

Filings this week (4)

• 2026-07-28 — SCHEDULE 13G/A filed
• 2026-07-27 — Notice of proposed sale filed (Form 144)
• 2026-07-22 — Prospectus supplement (424B5) filed
• 2026-07-22 — Current report (8-K) filed

Every filing links to the official SEC document. Real-time filing alerts for this company are available inside the app.

Latest updates

• 2026-07-21 — Prospectus supplement (424B5) filed
• 2026-07-20 — Current report (8-K) filed

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, DYNE THERAPEUTICS INC has 227 institutional holders and institutional ownership of 113.7%.

Insider activity

Insiders reported 31 transactions (3 buys, 19 sells) across 6 reporting insiders, with a net reported value of −$15.0M.

Data flags from SEC filings

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