COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q4 2025

Shares 139 Value ($000) $9 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 132 Value ($000) $11 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 108 Value ($000) $9 Avg Close $77.90 Range $71.21 - $83.68

Q3 2020

Shares 1 Value ($000) $1 Avg Close $79.70 Range $66.20 - $93.90

Q3 2019

Shares 3,884 Value ($000) $2,304 Avg Close $59.86 Range $55.57 - $63.94

Q2 2019

Shares 1,338 Value ($000) $741 Avg Close $51.11 Range $46.90 - $56.27

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	139	$9	$70.84	$62.00 - $85.24
Q3 2025	132	$11	$88.37	$79.94 - $97.43
Q2 2025	108	$9	$77.90	$71.21 - $83.68
Q3 2020	1	$1	$79.70	$66.20 - $93.90
Q3 2019	3,884	$2,304	$59.86	$55.57 - $63.94
Q2 2019	1,338	$741	$51.11	$46.90 - $56.27