Date
Insider
Company
Owned Shares
Shares Traded
Price
Net Total
SELL
28 Apr 2023FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP, INC.
(CSGP)
974,309-27%
360,530
$76.77
$27,677,886.00
SELL
1 Mar 2023SIMURO FRANK
Chief Technology Officer, Officer
COSTAR GROUP, INC.
(CSGP)
337,577-9%
35,220
$70.09
$2,468,569.80
SELL
28 Oct 2022DESMARAIS MICHAEL J
Chief Human Resources Officer, Officer
COSTAR GROUP, INC.
(CSGP)
36,900-3%
1,296
$82.81
$107,321.76
SELL
3 Aug 2022DESMARAIS MICHAEL J
Chief Human Resources Officer, Officer
COSTAR GROUP, INC.
(CSGP)
39,619-4%
2,000
$72.51
$145,020.00
SELL
2 May 2022DESMARAIS MICHAEL J
Chief Human Resources Officer, Officer
COSTAR GROUP, INC.
(CSGP)
41,619-2%
1,000
$63.14
$63,140.00
SELL
1 Mar 2022Ruggles Lisa
Senior VP, Global Research, Officer
COSTAR GROUP, INC.
(CSGP)
161,600-11%
21,640
$59.88
$1,295,803.20
SELL
11 Nov 2021Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP, INC.
(CSGP)
645-11%
85
$81.72
$6,946.20
SELL
10 Nov 2021NASSETTA CHRISTOPHER J
Director
COSTAR GROUP, INC.
(CSGP)
267,180-0%
2,120
$83.21
$176,405.20
SELL
23 Mar 2021SAINT FREDERICK G.
President, Marketplaces, Officer
COSTAR GROUP, INC.
(CSGP)
24,157-76%
78,340
$83.17
$6,515,538.00
SELL
15 Mar 2021Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP, INC.
(CSGP)
27,413-72%
73,260
$84.33
$6,177,869.50
SELL
10 Mar 2021FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP, INC.
(CSGP)
76,085-72%
195,700
$81.84
$16,015,501.00
SELL
5 Feb 2021 Josh Gottheimer
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
13 Oct 2020 Greg Gianforte
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
7 Oct 2020 Gilbert Cisneros
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
25 Sep 2020 Josh Gottheimer
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
24 Sep 2020 Greg Gianforte
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$100,001 - $250,000
SELL
23 Sep 2020 Gilbert Cisneros
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
2 Sep 2020Ruggles Lisa
Senior VP, Global Research, Officer
COSTAR GROUP, INC.
(CSGP)
14,464-84%
75,960
$87.00
$6,608,520.00
SELL
26 Aug 2020FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP, INC.
(CSGP)
107,121-74%
311,680
$84.99
$26,489,994.00
SELL
12 Aug 2020Linnington Matthew
Executive VP, Sales, Officer
COSTAR GROUP, INC.
(CSGP)
19,766-55%
24,190
$82.63
$1,998,868.10
SELL
4 Aug 2020Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP, INC.
(CSGP)
25,262-82%
120,020
$82.67
$9,922,174.00
SELL
7 May 2020 Greg Gianforte
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$50,001 - $100,000
SELL
6 May 2020KLEIN MICHAEL R
Director
COSTAR GROUP, INC.
(CSGP)
231,414-39%
150,000
$63.92
$9,587,715.00
BUY
30 Mar 2020 Gilbert Cisneros
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
BUY
27 Mar 2020 Gilbert Cisneros
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$15,001 - 50,000
SELL
29 Feb 2020Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP, INC.
(CSGP)
28,475-67%
60,050
$70.33
$4,223,076.50
SELL
29 Feb 2020FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP, INC.
(CSGP)
110,147-75%
336,000
$66.39
$22,307,040.00
SELL
5 Feb 2020 Gilbert Cisneros
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
17 Jan 2020 Josh Gottheimer
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
22 Nov 2019 Josh Gottheimer
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
25 Oct 2019NASSETTA CHRISTOPHER J
Director
COSTAR GROUP, INC.
(CSGP)
26,381-13%
4,060
$57.10
$231,821.94
SELL
9 Oct 2019 Gilbert Cisneros
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
26 Sep 2019 Gilbert Cisneros
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
10 Sep 2019 Gilbert Cisneros
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
6 Sep 2019 Greg Gianforte
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$50,001 - $100,000
SELL
31 Jul 2019Linnington Matthew
Executive VP, Sales, Officer
COSTAR GROUP, INC.
(CSGP)
21,805-87%
146,510
$61.74
$9,045,381.00
SELL
26 Jul 2019Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP, INC.
(CSGP)
29,259-70%
69,330
$62.95
$4,364,323.50
SELL
26 Jul 2019FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP, INC.
(CSGP)
96,298-71%
242,100
$62.86
$15,219,375.00
SELL
28 Feb 2019Ruggles Lisa
Senior VP, Global Research, Officer
COSTAR GROUP INC
(CSGP)
14,009-52%
15,380
$46.66
$717,661.56
SELL
28 Feb 2019Linnington Matthew
Executive VP, Sales, Officer
COSTAR GROUP INC
(CSGP)
26,677-63%
47,010
$47.73
$2,243,834.20
SELL
28 Feb 2019Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP INC
(CSGP)
30,302-64%
53,960
$47.61
$2,569,089.50
SELL
28 Feb 2019FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP INC
(CSGP)
129,353-81%
553,220
$47.34
$26,188,328.00
SELL
29 Oct 2018NASSETTA CHRISTOPHER J
Director
COSTAR GROUP INC
(CSGP)
26,456-17%
5,710
$34.97
$199,661.58
SELL
30 Jul 2018Linnington Matthew
Executive VP, Sales, Officer
COSTAR GROUP INC
(CSGP)
26,935-61%
43,840
$41.19
$1,805,901.10
SELL
27 Jul 2018Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP INC
(CSGP)
28,523-62%
47,000
$42.60
$2,002,294.00
SELL
27 Jul 2018CARCHEDI FRANCIS
Executive VP, Corp. Dev., Officer
COSTAR GROUP INC
(CSGP)
21,329-93%
326,710
$42.19
$13,782,915.00
BUY
21 Jun 2018 Josh Gottheimer
Congressman (House)
COSTAR GROUP, INC.
(CSGP)
N/A
N/A
N/A
$1,001 - $15,000
SELL
26 Apr 2018FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP INC
(CSGP)
119,831-67%
248,210
$37.10
$9,209,313.00
SELL
7 Mar 2018CARCHEDI FRANCIS
Executive VP, Corp. Dev., Officer
COSTAR GROUP INC
(CSGP)
28,584-80%
121,000
$35.61
$4,308,689.00
SELL
5 Mar 2018Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP INC
(CSGP)
29,762-29%
12,500
$35.37
$442,112.50
SELL
2 Mar 2018Linnington Matthew
Executive VP, Sales, Officer
COSTAR GROUP INC
(CSGP)
31,424-71%
79,210
$34.82
$2,758,313.00
SELL
27 Feb 2018FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP INC
(CSGP)
133,896-85%
800,550
$34.71
$27,787,090.00
SELL
31 Jul 2017Linnington Matthew
Executive VP, Sales, Officer
COSTAR GROUP INC
(CSGP)
27,601-39%
17,670
$27.31
$482,656.03
SELL
26 Jun 2017KLEIN MICHAEL R
Director
COSTAR GROUP INC
(CSGP)
310,469-39%
200,000
$26.50
$5,300,200.00
SELL
2 May 2017CARCHEDI FRANCIS
Executive VP, Corp. Dev., Officer
COSTAR GROUP INC
(CSGP)
25,013-68%
55,000
$24.50
$1,347,720.00
SELL
2 May 2017FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP INC
(CSGP)
148,885-74%
435,360
$24.45
$10,642,810.00
SELL
1 May 2017Wheeler Scott T
Chief Financial Officer, Officer
COSTAR GROUP INC
(CSGP)
23,328-24%
7,570
$24.00
$181,680.00
SELL
1 May 2017Linnington Matthew
Executive VP, Sales, Officer
COSTAR GROUP INC
(CSGP)
28,336-26%
10,370
$24.00
$248,880.00
SELL
5 Mar 2017CARCHEDI FRANCIS
Executive VP, Corp. Dev., Officer
COSTAR GROUP INC
(CSGP)
25,708-48%
24,480
$20.53
$502,574.40
SELL
28 Feb 2017CARCHEDI FRANCIS
Executive VP, Corp. Dev., Officer
COSTAR GROUP INC
(CSGP)
29,004-60%
45,000
$20.50
$922,410.00
SELL
28 Feb 2017FLORANCE ANDREW C
President and CEO, Director, Officer
COSTAR GROUP INC
(CSGP)
155,159-62%
262,710
$20.53
$5,393,699.00
SELL
31 Oct 2016NASSETTA CHRISTOPHER J
Director
COSTAR GROUP INC
(CSGP)
25,835-18%
5,750
$18.77
$107,912.50
SELL
31 Oct 2016Linnington Matthew
Executive VP, Sales, Officer
COSTAR GROUP INC
(CSGP)
20,438-34%
10,600
$18.83
$199,608.60
SELL
1 Aug 2016Glosserman Michael J
Director
COSTAR GROUP INC
(CSGP)
7,232-87%
50,000
$20.63
$1,031,650.00