DYNE THERAPEUTICS INC

Ticker: DYN CUSIP: 26818M108 Class: Common Stock

Caption Management, LLC's Holding History (CIK: 0001706766)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 2,500 Value ($000) $49 Avg Close $18.94 Range $12.33 - $25.00

Q4 2023

Shares 187,288 Value ($000) $2,491 Avg Close $9.77 Range $6.40 - $13.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,500	$49	$18.94	$12.33 - $25.00
Q4 2023	187,288	$2,491	$9.77	$6.40 - $13.88