DYNE THERAPEUTICS INC

Ticker: DYN CUSIP: 26818M108 Class: Common Stock

HRT FINANCIAL LP's Holding History (CIK: 0001475597)

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

Q4 2025

Shares 75,394 Value ($000) $1 Avg Close $18.94 Range $12.33 - $25.00

Q1 2025

Shares 21,345 Value ($000) $0 Avg Close $14.30 Range $9.96 - $26.22

Q4 2024

Shares 16,722 Value ($000) $0 Avg Close $29.58 Range $23.05 - $35.90

Q1 2023

Shares 38,532 Value ($000) $0 Avg Close $12.99 Range $10.71 - $15.60

Q4 2022

Shares 16,882 Value ($000) $0 Avg Close $11.57 Range $9.06 - $14.55

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	75,394	$1	$18.94	$12.33 - $25.00
Q1 2025	21,345	$0	$14.30	$9.96 - $26.22
Q4 2024	16,722	$0	$29.58	$23.05 - $35.90
Q1 2023	38,532	$0	$12.99	$10.71 - $15.60
Q4 2022	16,882	$0	$11.57	$9.06 - $14.55