Andrew C Florance

Date	Company	Security	Transaction	Code	Indirect	10b5-1	$Price	#Shares	$Value	#Remaining
25 Oct 24	CSGP CoStar	Common Stock, par value $0.01 per share	Buy	Acquire P	No	No	74.67	14,731.03	1.10 mm	1,263,098.03
1 Mar 24	CSGP CoStar	Common Stock, par value $0.01 per share	Payment of exercise	Dispose F	No	No	87.03	24,228	2.11 mm	1,248,367
22 Feb 24	CSGP CoStar	Common Stock, par value $0.01 per share	Grant	Acquire A	No	No	0	367,840	0.00	1,272,595
22 Feb 24	CSGP CoStar	Common Stock, par value $0.01 per share	Payment of exercise	Dispose F	No	No	83.98	22,058	1.85 mm	904,755
22 Feb 24	CSGP CoStar	Common Stock, par value $0.01 per share	Sale back to company	Dispose D	No	No	0	31,200	0.00	926,813
22 Feb 24	CSGP CoStar	Option to Acquire Common Stock Common Stock	Grant	Acquire A	No	No	82.47	90,500	7.46 mm	90,500
15 Feb 24	CSGP CoStar	Common Stock, par value $0.01 per share	Payment of exercise	Dispose F	No	No	82.32	16,296	1.34 mm	958,013

Data from 3, 4 and 5 filings. Values as filed, not updated for current price.