DEFINITIVE HEALTHCARE CORP

Ticker: DH CUSIP: 24477E103 Class: Common Stock

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2025

Shares 701,637 Value ($000) $2,014 Avg Close $2.77 Range $2.23 - $4.02

Q3 2025

Shares 1,216,007 Value ($000) $4,937 Avg Close $3.99 Range $3.44 - $4.70

Q2 2025

Shares 1,088,952 Value ($000) $4,247 Avg Close $3.15 Range $2.15 - $4.34

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	701,637	$2,014	$2.77	$2.23 - $4.02
Q3 2025	1,216,007	$4,937	$3.99	$3.44 - $4.70
Q2 2025	1,088,952	$4,247	$3.15	$2.15 - $4.34