DYNE THERAPEUTICS INC

Ticker: DYN CUSIP: 26818M108 Class: Common Stock

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

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

Q4 2025

Shares 58,755 Value ($000) $1,149 Avg Close $18.94 Range $12.33 - $25.00

Q2 2024

Shares 18,092 Value ($000) $638 Avg Close $29.06 Range $23.11 - $36.60

Q1 2024

Shares 24,410 Value ($000) $693 Avg Close $22.62 Range $12.33 - $30.27

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	58,755	$1,149	$18.94	$12.33 - $25.00
Q2 2024	18,092	$638	$29.06	$23.11 - $36.60
Q1 2024	24,410	$693	$22.62	$12.33 - $30.27