InsiderClue
Stocks · Industrials · Services-Business Services, NEC

CoStar Group

CSGP Clue Score48
United States Fiscal year ends December CIK 0001057352 Results filed 27 Oct 2026
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What the insiders did Net selling

Individual transactions

115
Insider
Date
Role
Action
Shares
Price
Amount
Cynthia Cammett Cann
7 Aug 2026
Chief Accounting Officer
Sell
4,788
$30.78
$147.37K
John W Hill
5 Aug 2026
Director
Sell
3,500
$30.21
$105.74K
Andrew C Florance
4 Aug 2026
Founder and CEO
Buy
83,300
$29.89
$2.49M
Andrew C Florance
1 May 2026
President and CEO
Buy
3,100
$35.82
$111.04K
Andrew C Florance
1 May 2026
President and CEO
Buy
68,330
$35.17
$2.40M
Louise S Sams
6 Mar 2026
Director
Buy
1,000
$48.36
$48.36K
Frederick G. Saint
2 Mar 2026
President, Marketplaces
Buy
20,000
$45.33
$906.60K
Rachel C Glaser
2 Mar 2026
Director
Buy
1,000
$44.94
$44.94K
Andrew C Florance
27 Feb 2026
President and CEO
Buy
55,720
$44.52
$2.48M
Cynthia Cammett Cann
13 Nov 2025
Chief Accounting Officer
Sell
1,841
$68.79
$126.64K
John W Hill
13 Nov 2025
Director
Sell
2,250
$68.68
$154.53K
Frederick G. Saint
28 Aug 2025
President, Marketplaces
Sell
25,000
$90.33
$2.26M
Cynthia Cammett Cann
28 Jul 2025
Chief Accounting Officer
Sell
2,033
$92.85
$188.76K
Frederick G. Saint
28 Jul 2025
President, Marketplaces
Sell
25,000
$93.23
$2.33M
Frederick G. Saint
11 Jun 2025
President, Marketplaces
Sell
25,000
$81.10
$2.03M
Cynthia Cammett Cann
10 Mar 2025
Chief Accounting Officer
Sell
1,749
$79.90
$139.75K
John W Hill
10 Dec 2024
Director
Sell
2,735
$76.76
$209.94K
Christopher J Nassetta
27 Nov 2024
Director
Sell
1,681
$80.39
$135.14K
Michael J Desmarais
26 Nov 2024
Chief Human Resources Officer
Sell
5,500
$79.88
$439.34K
Cynthia Cammett Cann
11 Nov 2024
Chief Accounting Officer
Sell
1,310
$76.85
$100.67K
Andrew C Florance
25 Oct 2024
President and CEO
Buy
14,731
$74.67
$1.10M
Michael R Klein
25 Oct 2024
Director
Sell
71,633
$74.69
$5.35M
Cynthia Cammett Cann
31 Jul 2024
Chief Accounting Officer
Sell
1,200
$78.20
$93.84K
John W Hill
30 Jul 2024
Director
Sell
1,325
$78.16
$103.56K
Frederick G. Saint
16 May 2024
President, Marketplaces
Sell
2,500
$88.43
$221.08K
Lisa Ruggles
9 May 2024
Senior VP, Global Operations
Sell
20,000
$91.15
$1.82M
Scott T Wheeler
26 Apr 2024
Chief Financial Officer
Sold after exercise
122,736
$92.61
$11.37M
Michael J Desmarais
26 Apr 2024
Chief Human Resources Officer
Sell
3,800
$92.67
$352.15K
John W Hill
28 Nov 2023
Director
Sell
3,020
$84.07
$253.89K
Christopher J Nassetta
8 Nov 2023
Director
Sell
1,500
$77.86
$116.79K
Lisa Ruggles
30 Jun 2023
Senior VP, Global Research
Sell
30,474
$91.42
$2.79M
Scott T Wheeler
28 Jun 2023
Chief Financial Officer
Sell
21,530
$89.30
$1.92M
Frank Simuro
27 Jun 2023
Chief Technology Officer
Sell
92,300
$89.65
$8.27M
John W Hill
26 Jun 2023
Director
Sell
1,500
$86.57
$129.86K
Scott T Wheeler
12 Jun 2023
Chief Financial Officer
Sell
24,670
$80.68
$1.99M
Frederick G. Saint
7 Jun 2023
President, Marketplaces
Sell
30,000
$80.24
$2.41M
Andrew C Florance
28 Apr 2023
President and CEO
Sold after exercise
360,530
$76.77
$27.68M
John W Hill
31 Mar 2023
Director
Sell
2,300
$68.50
$157.55K
Frank Simuro
17 Mar 2023
Chief Technology Officer
Exercised, kept
2,920
$34.21
$99.89K
Frank Simuro
17 Mar 2023
Chief Technology Officer
Exercised, kept
4,880
$20.49
$99.99K
Frank Simuro
17 Mar 2023
Chief Technology Officer
Exercised, kept
5,470
$18.28
$99.99K
Frank Simuro
17 Mar 2023
Chief Technology Officer
Exercised, kept
10,320
$19.37
$199.90K
Michael J Desmarais
8 Mar 2023
Chief Human Resources Officer
Sell
5,600
$70.36
$394.02K
Frank Simuro
1 Mar 2023
Chief Technology Officer
Sold after exercise
35,220
$70.09
$2.47M
John W Hill
3 Nov 2022
Director
Sell
3,650
$78.92
$288.06K
Michael J Desmarais
28 Oct 2022
Chief Human Resources Officer
Sell
1,296
$82.81
$107.32K
John W Hill
10 Aug 2022
Director
Sell
1,400
$74.49
$104.29K
Michael R Klein
5 Aug 2022
Director
Sell
150,000
$72.42
$10.86M
Michael J Desmarais
3 Aug 2022
Chief Human Resources Officer
Sell
2,000
$72.51
$145.02K
John W Hill
24 May 2022
Director
Sell
1,750
$57.07
$99.87K
Michael J Desmarais
2 May 2022
Chief Human Resources Officer
Sell
1,000
$63.14
$63.14K
Lisa Ruggles
2 Mar 2022
Senior VP, Global Research
Sell
21,640
$59.88
$1.30M
Scott T Wheeler
11 Nov 2021
Chief Financial Officer
Sell indirect
85
$81.72
$6.95K
Christopher J Nassetta
10 Nov 2021
Director
Sell
2,120
$83.21
$176.41K
Laura Cox Kaplan
5 Nov 2021
Director
Sell
4,040
$83.29
$336.49K
John W Hill
29 Oct 2021
Director
Sell
9,235
$86.97
$803.17K
John W Hill
9 Aug 2021
Director
Sell
6,160
$85.77
$528.31K
Laura Cox Kaplan
30 Apr 2021
Director
Sell
1,062
$869.03
$922.91K
Frederick G. Saint
23 Mar 2021
President, Marketplaces
Sold after exercise
7,834
$831.70
$6.52M
Scott T Wheeler
16 Mar 2021
Chief Financial Officer
Sold after exercise
7,326
$843.28
$6.18M
Andrew C Florance
10 Mar 2021
President and CEO
Sell
19,570
$818.37
$16.02M
Lisa Ruggles
2 Sep 2020
Senior VP, Global Research
Sold after exercise
7,596
$870.00
$6.61M
Andrew C Florance
27 Aug 2020
President and CEO
Sold after exercise
15,584
$851.66
$13.27M
Andrew C Florance
26 Aug 2020
President and CEO
Sold after exercise
15,584
$848.16
$13.22M
Matthew Linnington
12 Aug 2020
Executive VP, Sales
Sell
2,419
$826.32
$2.00M
Scott T Wheeler
4 Aug 2020
Chief Financial Officer
Sold after exercise
12,002
$826.71
$9.92M
Michael R Klein
7 May 2020
Director
Sell
11,361
$636.51
$7.23M
Michael R Klein
6 May 2020
Director
Sell
3,639
$647.52
$2.36M
David Jay Steinberg
4 Mar 2020
Director
Sell
850
$714.00
$606.90K
Scott T Wheeler
3 Mar 2020
Chief Financial Officer
Sold after exercise
6,005
$703.26
$4.22M
Andrew C Florance
2 Mar 2020
President and CEO
Sold after exercise
33,600
$663.90
$22.31M
Scott T Wheeler
29 Feb 2020
Chief Financial Officer
Exercised, kept
3,600
$342.13
$1.23M
Andrew C Florance
31 Dec 2019
President and CEO
Exercised, kept
547
$182.75
$99.96K
Andrew C Florance
31 Dec 2019
President and CEO
Exercised, kept
1,032
$193.69
$199.89K
John W Hill
31 Dec 2019
Director
Sell
500
$591.90
$295.95K
Laura Cox Kaplan
19 Nov 2019
Director
Sell
576
$591.60
$340.76K
Christopher J Nassetta
25 Oct 2019
Director
Sell
406
$570.99
$231.82K
Matthew Linnington
31 Jul 2019
Executive VP, Sales
Sold after exercise
14,651
$617.39
$9.05M
Andrew C Florance
26 Jul 2019
President and CEO
Sell
24,210
$628.64
$15.22M
Scott T Wheeler
26 Jul 2019
Chief Financial Officer
Sold after exercise
6,933
$629.50
$4.36M
John W Hill
24 Jun 2019
Director
Sell
315
$553.23
$174.27K
Andrew C Florance
4 Mar 2019
President and CEO
Sold after exercise
55,322
$473.38
$26.19M
Scott T Wheeler
1 Mar 2019
Chief Financial Officer
Sell
5,396
$476.11
$2.57M
Matthew Linnington
1 Mar 2019
Executive VP, Sales
Sold after exercise
4,701
$477.31
$2.24M
Lisa Ruggles
1 Mar 2019
Senior VP, Global Research
Sell
1,538
$466.62
$717.66K
John W Hill
26 Dec 2018
Director
Sell
1,042
$330.88
$344.78K
Christopher J Nassetta
29 Oct 2018
Director
Sell
571
$349.67
$199.66K
Michael R Klein
6 Aug 2018
Director
Sell
15,000
$420.69
$6.31M
Matthew Linnington
30 Jul 2018
Executive VP, Sales
Sold after exercise
4,384
$411.93
$1.81M
Francis Carchedi
27 Jul 2018
Executive VP, Corp. Dev.
Sold after exercise
32,671
$421.87
$13.78M
Scott T Wheeler
27 Jul 2018
Chief Financial Officer
Sold after exercise
4,700
$426.02
$2.00M
Andrew C Florance
30 Apr 2018
President and CEO
Sell
5,839
$369.05
$2.15M
Andrew C Florance
27 Apr 2018
President and CEO
Sell
11,200
$371.15
$4.16M
Andrew C Florance
26 Apr 2018
President and CEO
Sell
7,782
$372.34
$2.90M
John W Hill
29 Mar 2018
Director
Sell
1,150
$361.28
$415.47K
Michael R Klein
22 Mar 2018
Director
Sell
3,000
$361.61
$1.08M
Francis Carchedi
7 Mar 2018
Executive VP, Corp. Dev.
Sold after exercise
12,100
$356.09
$4.31M
Scott T Wheeler
5 Mar 2018
Chief Financial Officer
Sell
1,250
$353.69
$442.11K
Matthew Linnington
2 Mar 2018
Executive VP, Sales
Sold after exercise
1,153
$348.45
$401.76K
Matthew Linnington
2 Mar 2018
Executive VP, Sales
Sold after exercise
6,768
$348.19
$2.36M
Andrew C Florance
27 Feb 2018
President and CEO
Sold after exercise
80,055
$347.10
$27.79M
Matthew Linnington
31 Jul 2017
Executive VP, Sales
Sold after exercise
1,767
$273.15
$482.66K
Michael R Klein
26 Jun 2017
Director
Sell
20,000
$265.01
$5.30M
Andrew C Florance
3 May 2017
President and CEO
Sold after exercise
21,768
$244.19
$5.32M
Andrew C Florance
2 May 2017
President and CEO
Sold after exercise
21,768
$244.73
$5.33M
Francis Carchedi
2 May 2017
Executive VP, Corp. Dev.
Sold after exercise
5,500
$245.04
$1.35M
John W Hill
2 May 2017
Director
Sell
440
$244.52
$107.59K
Matthew Linnington
1 May 2017
Executive VP, Sales
Sell
1,037
$240.00
$248.88K
Scott T Wheeler
1 May 2017
Chief Financial Officer
Sell
757
$240.00
$181.68K
Francis Carchedi
6 Mar 2017
Executive VP, Corp. Dev.
Sell
2,448
$205.30
$502.57K
Andrew C Florance
2 Mar 2017
President and CEO
Sell
26,271
$205.31
$5.39M
Francis Carchedi
2 Mar 2017
Executive VP, Corp. Dev.
Sold after exercise
4,500
$204.98
$922.41K
Andrew C Florance
29 Dec 2016
President and CEO
Exercised, kept
978
$102.16
$99.91K
Andrew C Florance
29 Dec 2016
President and CEO
Exercised, kept
1,696
$58.95
$99.98K
Andrew C Florance
29 Dec 2016
President and CEO
Exercised, kept
499
$57.16
$28.52K

What was left out

Form 4 filings counted 387
Amendments (4/A) skipped 2
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 27
Sales at will 70
Transactions with no price 0
Shares from compensation/vesting 6,160,711
Sales filed before the plan box existed 42
History held since 26 Oct 2006