CoStar Group Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:CSGP Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
28 Nov 23	SellUS$253,891	John Hill	Individual	3,020	US$84.07
08 Nov 23	SellUS$116,790	Christopher Nassetta	Individual	1,500	US$77.86
30 Jun 23	SellUS$2,785,933	Lisa Ruggles	Individual	30,474	US$91.42
28 Jun 23	SellUS$1,922,629	Scott Wheeler	Individual	21,530	US$89.30
27 Jun 23	SellUS$8,274,695	Frank Simuro	Individual	92,300	US$89.65
26 Jun 23	SellUS$129,855	John Hill	Individual	1,500	US$86.57
12 Jun 23	SellUS$1,990,376	Scott Wheeler	Individual	24,670	US$80.68
07 Jun 23	SellUS$2,407,200	Frederick Saint	Individual	30,000	US$80.24

Insider Trading Volume

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Ownership Breakdown

What is the ownership structure of CSGP?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	96,989	0.0238%
State or Government	415,970	0.102%
General Public	2,567,518	0.629%
Individual Insiders	4,826,720	1.18%
Institutions	400,436,690	98.1%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 68.49% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
15.9%	The Vanguard Group, Inc.	64,909,799	US$5.9b	0%	0.09%
8.95%	BlackRock, Inc.	36,527,891	US$3.3b	10.1%	0.06%
4.86%	Principal Global Investors, LLC	19,831,936	US$1.8b	0.12%	0.93%
4.75%	Baron Capital Group, Inc.	19,391,283	US$1.8b	1.01%	4.11%
3.87%	State Street Global Advisors, Inc.	15,816,290	US$1.4b	5.83%	0.06%
2.9%	Massachusetts Financial Services Company	11,826,704	US$1.1b	-1.17%	0.22%
2.56%	Geode Capital Management, LLC	10,450,445	US$944.1m	1.74%	0.08%
2.46%	Janus Henderson Group plc	10,034,463	US$906.5m	11.7%	0.37%
2.33%	Baillie Gifford & Co.	9,524,096	US$860.4m	-18.2%	0.35%
2.15%	Macquarie Investment Management Business Trust	8,785,892	US$793.7m	-1.03%	0.83%
2.04%	T. Rowe Price Group, Inc.	8,313,935	US$751.1m	-10.2%	0.07%
1.78%	Akre Capital Management, LLC	7,255,669	US$655.5m	0.09%	4.23%
1.58%	Capital Research and Management Company	6,450,922	US$582.8m	38.1%	0.03%
1.49%	BNY Mellon Asset Management	6,091,292	US$550.3m	11.7%	0.1%
1.49%	William Blair Investment Management, LLC	6,071,014	US$548.5m	4.62%	0.7%
1.38%	Sands Capital Management, LLC	5,620,801	US$507.8m	-29.1%	1.17%
1.26%	Artisan Partners Limited Partnership	5,138,004	US$464.2m	-7.75%	0.35%
1.14%	Norges Bank Investment Management	4,656,533	US$420.7m	12.2%	0.03%
1.02%	Brown Advisory Incorporated	4,144,721	US$374.4m	10.1%	0.45%
0.91%	Northern Trust Global Investments	3,718,387	US$335.9m	-3.04%	0.05%
0.83%	Managed Account Advisors LLC	3,407,773	US$307.9m	3.79%	0.06%
0.76%	Farallon Capital Management, L.L.C.	3,121,356	US$282.0m	12%	1.84%
0.72%	Columbia Management Investment Advisers, LLC	2,951,255	US$266.6m	-4.45%	0.06%
0.69%	Wellington Management Group LLP	2,830,699	US$255.7m	-20.9%	0.04%
0.68%	Legal & General Investment Management Limited	2,792,451	US$252.3m	25.8%	0.05%