CoStar Group Ownership

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

Recent Insider Transactions

BIT:1CSGP Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
25 Oct 24	Buy€1,016,369	Andrew Florance	Individual	14,731.03	€69.00
25 Oct 24	Sell€4,943,648	Michael Klein	Individual	71,633	€69.01
30 Jul 24	Sell€95,867	John Hill	Individual	1,325	€72.35
16 May 24	Sell€203,389	Frederick Saint	Individual	2,500	€81.36
09 May 24	Sell€1,691,926	Lisa Ruggles	Individual	20,000	€84.60
26 Apr 24	Sell€329,855	Michael Desmarais	Individual	3,800	€86.80
28 Nov 23	Sell€231,067	John Hill	Individual	3,020	€76.51
08 Nov 23	Sell€109,059	Christopher Nassetta	Individual	1,500	€72.71

Insider Trading Volume

Insider Buying: 1CSGP insiders have sold more shares than they have bought in the past 3 months.

Ownership Breakdown

What is the ownership structure of 1CSGP?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	0	0%
State or Government	382,586	0.0933%
General Public	1,801,850	0.44%
Individual Insiders	4,809,289	1.17%
Institutions	402,965,792	98.3%

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

Top Shareholders

Top 25 shareholders own 68.48% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
16%	The Vanguard Group, Inc.	65,617,338	€4.4b	0.25%	0.07%
9.41%	BlackRock, Inc.	38,561,085	€2.6b	-0.84%	0.04%
4.74%	Principal Global Investors, LLC	19,415,535	€1.3b	0.08%	0.7%
4.7%	Baron Capital Group, Inc.	19,270,998	€1.3b	-0.34%	3.36%
3.99%	State Street Global Advisors, Inc.	16,337,591	€1.1b	1.31%	0.04%
2.96%	Janus Henderson Group plc	12,114,530	€818.7m	2.6%	0.35%
2.78%	Massachusetts Financial Services Company	11,384,572	€769.3m	-1.03%	0.17%
2.7%	Geode Capital Management, LLC	11,072,579	€748.2m	2.13%	0.06%
2.21%	Baillie Gifford & Co.	9,051,781	€611.7m	-2.18%	0.29%
2.14%	Akre Capital Management, LLC	8,770,423	€592.7m	20.8%	4.31%
2.05%	Macquarie Investment Management Business Trust	8,415,391	€568.7m	-0.52%	0.68%
1.62%	Capital Research and Management Company	6,649,046	€449.3m	-0.62%	0.02%
1.48%	BNY Asset Management	6,049,547	€408.8m	2.09%	0.08%
1.42%	Artisan Partners Limited Partnership	5,804,147	€392.2m	1.77%	0.32%
1.33%	William Blair Investment Management, LLC	5,451,012	€368.4m	-7.03%	0.49%
1.25%	T. Rowe Price Group, Inc.	5,137,801	€347.2m	-1.11%	0.03%
1.24%	Norges Bank Investment Management	5,096,624	€344.4m	9.45%	0.03%
1.01%	Vulcan Value Partners, LLC	4,138,987	€279.7m	90.1%	3.52%
0.95%	Brown Advisory Incorporated	3,898,942	€263.5m	5.02%	0.34%
0.9%	Managed Account Advisors LLC	3,687,316	€249.2m	6.91%	0.05%
0.86%	Northern Trust Global Investments	3,527,149	€238.4m	-0.28%	0.04%
0.71%	Invesco Capital Management LLC	2,907,058	€196.4m	14.5%	0.09%
0.7%	UBS Asset Management AG	2,868,453	€193.8m	16.5%	0.02%
0.7%	Legal & General Investment Management Limited	2,853,039	€192.8m	0.73%	0.04%
0.65%	Columbia Management Investment Advisers, LLC	2,672,024	€180.6m	-12.2%	0.04%