Cynthia Cammett Cann Costar Group, Inc. (CSGP) insider trading activity

Cynthia Cammett Cann is Chief Accounting Officer of COSTAR GROUP, INC.. Currently has a direct ownership of 23,211 shares of CSGP, which is worth approximately $1.58 Million. The most recent transaction as insider was on Nov 13, 2025, when has been sold 1,841 shares (Common Stock, par value $0.01 per share) at a price of $68.79 per share, resulting in proceeds of $126,642. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 23.2K

7.35% 3M change

12.36% 12M change

Total Value Held $1.58 Million

Cynthia Cammett Cann Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Nov 13 2025	SELL Open market or private sale	$126,642 $68.79 p/Share	1,841 Reduced 7.35%	23,211 Common Stock, par valu...
Aug 01 2025	SELL Payment of exercise price or tax liability	$68,441 $95.19 p/Share	719 Reduced 2.79%	25,052 Common Stock, par valu...
Jul 28 2025	SELL Open market or private sale	$188,764 $92.85 p/Share	2,033 Reduced 7.31%	25,771 Common Stock, par valu...
Jun 15 2025	SELL Payment of exercise price or tax liability	$37,414 $81.16 p/Share	461 Reduced 1.63%	27,804 Common Stock, par valu...
Mar 15 2025	SELL Payment of exercise price or tax liability	$93,767 $78.73 p/Share	1,191 Reduced 4.04%	28,265 Common Stock, par valu...
Mar 10 2025	SELL Open market or private sale	$139,745 $79.9 p/Share	1,749 Reduced 5.6%	29,456 Common Stock, par valu...
Mar 05 2025	BUY Grant, award, or other acquisition	-	1,498 Added 4.25%	33,715 Common Stock, par valu...

Mar 01 2025	SELL Payment of exercise price or tax liability	$61,991 $76.25 p/Share	813 Reduced 2.46%	32,217 Common Stock, par valu...
Feb 27 2025	BUY Grant, award, or other acquisition	-	4,035 Added 10.89%	33,030 Common Stock, par valu...
Nov 11 2024	SELL Open market or private sale	$100,673 $76.85 p/Share	1,310 Reduced 4.71%	26,485 Common Stock, par valu...
Jul 31 2024	SELL Open market or private sale	$93,840 $78.2 p/Share	1,200 Reduced 4.14%	27,795 Common Stock, par valu...
Jul 26 2024	BUY Grant, award, or other acquisition	-	9,553 Added 24.78%	28,995 Common Stock, par valu...

CCC

Cynthia Cammett Cann

Chief Accounting Officer

Washington, DC

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