COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

Fortitude Family Office, LLC's Holding History (CIK: 0001950506)

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

Q4 2025

Shares 47 Value ($000) $3 Avg Close $70.84 Range $62.00 - $85.24

Q3 2025

Shares 61 Value ($000) $5 Avg Close $88.37 Range $79.94 - $97.43

Q2 2025

Shares 54 Value ($000) $4 Avg Close $77.90 Range $71.21 - $83.68

Q1 2025

Shares 11 Value ($000) $1 Avg Close $76.08 Range $68.41 - $83.03

Q3 2024

Shares 53 Value ($000) $4 Avg Close $75.84 Range $70.86 - $81.63

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	47	$3	$70.84	$62.00 - $85.24
Q3 2025	61	$5	$88.37	$79.94 - $97.43
Q2 2025	54	$4	$77.90	$71.21 - $83.68
Q1 2025	11	$1	$76.08	$68.41 - $83.03
Q3 2024	53	$4	$75.84	$70.86 - $81.63