DYNE THERAPEUTICS INC

Ticker: DYN CUSIP: 26818M108 Class: Common Stock

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2025

Shares 168,304 Value ($000) $3,292 Avg Close $18.94 Range $12.33 - $25.00

Q3 2025

Shares 31,385 Value ($000) $397 Avg Close $11.41 Range $8.06 - $14.35

Q2 2024

Shares 6,451 Value ($000) $228 Avg Close $29.06 Range $23.11 - $36.60

Q4 2023

Shares 22,680 Value ($000) $302 Avg Close $9.77 Range $6.40 - $13.88

Q3 2023

Shares 27,407 Value ($000) $246 Avg Close $10.77 Range $8.35 - $12.68

Q2 2023

Shares 20,018 Value ($000) $225 Avg Close $11.80 Range $8.04 - $15.02

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	168,304	$3,292	$18.94	$12.33 - $25.00
Q3 2025	31,385	$397	$11.41	$8.06 - $14.35
Q2 2024	6,451	$228	$29.06	$23.11 - $36.60
Q4 2023	22,680	$302	$9.77	$6.40 - $13.88
Q3 2023	27,407	$246	$10.77	$8.35 - $12.68
Q2 2023	20,018	$225	$11.80	$8.04 - $15.02