COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

Atom Investors LP's Holding History (CIK: 0001738902)

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

Q4 2025

Shares 3,959 Value ($000) $266 Avg Close $70.84 Range $62.00 - $85.24

Q4 2020

Shares 5,096 Value ($000) $4,710 Avg Close $87.68 Range $78.10 - $95.12

Q3 2020

Shares 3,052 Value ($000) $2,590 Avg Close $79.70 Range $66.20 - $93.90

Q2 2020

Shares 1,325 Value ($000) $942 Avg Close $64.65 Range $52.02 - $74.71

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	3,959	$266	$70.84	$62.00 - $85.24
Q4 2020	5,096	$4,710	$87.68	$78.10 - $95.12
Q3 2020	3,052	$2,590	$79.70	$66.20 - $93.90
Q2 2020	1,325	$942	$64.65	$52.02 - $74.71