DYNE THERAPEUTICS INC

Ticker: DYN CUSIP: 26818M108 Class: Common Stock

Headlands Technologies LLC's Holding History (CIK: 0001570271)

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

Q4 2025

Shares 75,235 Value ($000) $1,472 Avg Close $18.94 Range $12.33 - $25.00

Q3 2025

Shares 12,699 Value ($000) $161 Avg Close $11.41 Range $8.06 - $14.35

Q2 2024

Shares 1 Value ($000) $0 Avg Close $29.06 Range $23.11 - $36.60

Q1 2024

Shares 256 Value ($000) $7 Avg Close $22.62 Range $12.33 - $30.27

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	75,235	$1,472	$18.94	$12.33 - $25.00
Q3 2025	12,699	$161	$11.41	$8.06 - $14.35
Q2 2024	1	$0	$29.06	$23.11 - $36.60
Q1 2024	256	$7	$22.62	$12.33 - $30.27