Brian S. Posner - 01 Oct 2025 Form 3 Insider Report for Dyne Therapeutics, Inc. (DYN)

Role
Director
Signature
/s/ Ron Caponigro, Attorney-in-Fact
Issuer symbol
DYN
Transactions as of
01 Oct 2025
Transactions value $
$0
Form type
3
Filing time
02 Oct 2025, 16:13:03 UTC
Previous filing
04 Aug 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Posner Brian S Director 1560 TRAPELO ROAD, WALTHAM /s/ Ron Caponigro, Attorney-in-Fact 02 Oct 2025 0001372455

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding DYN Common Stock 8,500 01 Oct 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Remarks:

Exhibit Index: 24.1 Power of Attorney