COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

VIKING GLOBAL INVESTORS LP's Holding History (CIK: 0001103804)

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

Q4 2025

Shares 1,442,582 Value ($000) $96,999 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 1,849,729 Value ($000) $156,062 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 3,218,568 Value ($000) $258,773 Avg Close $77.90 Range $71.21 - $83.68

Q4 2024

Shares 1,162,703 Value ($000) $83,238 Avg Close $75.52 Range $68.26 - $82.49

Q3 2024

Shares 1,261,195 Value ($000) $95,145 Avg Close $75.84 Range $70.86 - $81.63

Q4 2020

Shares 70,949 Value ($000) $65,577 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 300,146 Value ($000) $254,677 Avg Close $79.70 Range $66.20 - $93.90

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,442,582	$96,999	$70.84	$62.00 - $85.24
Q3 2025	1,849,729	$156,062	$88.37	$79.94 - $97.43
Q2 2025	3,218,568	$258,773	$77.90	$71.21 - $83.68
Q4 2024	1,162,703	$83,238	$75.52	$68.26 - $82.49
Q3 2024	1,261,195	$95,145	$75.84	$70.86 - $81.63
Q4 2020	70,949	$65,577	$87.68	$78.10 - $95.12
Q3 2020	300,146	$254,677	$79.70	$66.20 - $93.90