COSTAR GROUP INC

Ticker: CSGP CUSIP: 22160N109 Class: EQTY

Weiss Asset Management LP's Holding History (CIK: 0001357550)

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

Q4 2025

Shares 34,320 Value ($000) $2,308 Avg Close $70.84 Range $62.00 - $85.24

Q1 2024

Shares 5,157 Value ($000) $498 Avg Close $86.08 Range $79.82 - $100.38

Q1 2021

Shares 2,255 Value ($000) $1,853 Avg Close $86.33 Range $74.31 - $95.28

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	34,320	$2,308	$70.84	$62.00 - $85.24
Q1 2024	5,157	$498	$86.08	$79.82 - $100.38
Q1 2021	2,255	$1,853	$86.33	$74.31 - $95.28