C4 THERAPEUTICS INC

Ticker: CCCC CUSIP: 12529R107 Class: Common Stock

Vanguard Personalized Indexing Management, LLC's Holding History (CIK: 0001767306)

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

Q4 2025

Shares 15,224 Value ($000) $29 Avg Close $2.37 Range $1.90 - $2.84

Q3 2025

Shares 14,574 Value ($000) $32 Avg Close $2.40 Range $1.40 - $3.65

Q2 2025

Shares 14,720 Value ($000) $21 Avg Close $1.45 Range $1.08 - $1.79

Q1 2025

Shares 19,595 Value ($000) $31 Avg Close $2.98 Range $1.58 - $4.26

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	15,224	$29	$2.37	$1.90 - $2.84
Q3 2025	14,574	$32	$2.40	$1.40 - $3.65
Q2 2025	14,720	$21	$1.45	$1.08 - $1.79
Q1 2025	19,595	$31	$2.98	$1.58 - $4.26