Frank Simuro Costar Group, Inc. (CSGP) insider trading activity

Frank Simuro is Chief Technology Officer of COSTAR GROUP, INC.. Currently has a direct ownership of 483,599 shares of CSGP, which is worth approximately $33.7 Million. The most recent transaction as insider was on Mar 15, 2025, when has been sold 5,700 shares (Common Stock, par value $0.01 per share) at a price of $78.73 per share, resulting in proceeds of $448,761. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 484K

0% 3M change

23.84% 12M change

Total Value Held $33.7 Million

FRANK SIMURO Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Mar 15 2025	SELL Payment of exercise price or tax liability	$448,761 $78.73 p/Share	5,700 Reduced 1.16%	483,599 Common Stock, par valu...
Mar 01 2025	SELL Payment of exercise price or tax liability	$947,940 $76.25 p/Share	12,432 Reduced 2.48%	489,299 Common Stock, par valu...
Feb 20 2025	BUY Grant, award, or other acquisition	-	130,640 Added 20.66%	501,731 Common Stock, par valu...
Feb 15 2025	SELL Payment of exercise price or tax liability	$406,219 $74.06 p/Share	5,485 Reduced 1.4%	385,019 Common Stock, par valu...
Feb 13 2025	SELL Payment of exercise price or tax liability	$547,766 $73.27 p/Share	7,476 Reduced 1.97%	371,091 Common Stock, par valu...
Feb 13 2025	SELL Sale (or disposition) back to the issuer	-	6,452 Reduced 1.68%	378,567 Common Stock, par valu...
Mar 15 2024	SELL Payment of exercise price or tax liability	$450,597 $87.87 p/Share	5,128 Reduced 1.3%	390,504 Common Stock, par valu...
Mar 01 2024	SELL Payment of exercise price or tax liability	$530,099 $87.03 p/Share	6,091 Reduced 1.52%	395,632 Common Stock, par valu...
Feb 22 2024	SELL Sale (or disposition) back to the issuer	-	7,200 Reduced 2.51%	279,770 Common Stock, par valu...
Feb 22 2024	SELL Payment of exercise price or tax liability	$380,177 $83.98 p/Share	4,527 Reduced 1.62%	275,243 Common Stock, par valu...
Feb 22 2024	BUY Grant, award, or other acquisition	-	126,480 Added 23.95%	401,723 Common Stock, par valu...
Feb 15 2024	SELL Payment of exercise price or tax liability	$348,460 $82.32 p/Share	4,233 Reduced 1.45%	286,970 Common Stock, par valu...
Jun 27 2023	SELL Open market or private sale	$8,274,695 $89.65 p/Share	92,300 Reduced 25.87%	264,483 Common Stock, par valu...
Mar 17 2023	BUY Exercise of conversion of derivative security	$544,693 $23.09 p/Share	23,590 Added 6.2%	356,783 Common Stock, par valu...
Mar 01 2023	SELL Payment of exercise price or tax liability	$429,966 $70.66 p/Share	6,085 Reduced 1.77%	337,577 Common Stock, par valu...
Mar 01 2023	SELL Open market or private sale	$2,468,569 $70.09 p/Share	35,220 Reduced 9.45%	337,577 Common Stock, par valu...
Mar 01 2023	BUY Exercise of conversion of derivative security	$359,948 $10.22 p/Share	35,220 Added 8.63%	372,797 Common Stock, par valu...
Feb 15 2023	SELL Payment of exercise price or tax liability	$173,599 $76.78 p/Share	2,261 Reduced 0.65%	343,662 Common Stock, par valu...
Feb 14 2023	SELL Sale (or disposition) back to the issuer	-	14,279 Reduced 5.16%	262,323 Common Stock, par valu...
Feb 14 2023	BUY Grant, award, or other acquisition	-	83,600 Added 19.46%	345,923 Common Stock, par valu...

Frank Simuro

Chief Technology Officer

Washington, DC

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