Home About FAQ Contact Key Subscribe
 
Transaction Types Key To InsiderInsights' Infobase
 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
Reduced Version of Subscription Insider Search
Check all filing types
Uncheck all filing types
Remove The Noise What is the 'Remove The Noise' function?
Insider Portfolio Alerts
Free real time insider alerts
Top Trade Alerts
Free insider trades intra-day
Special Screens Report
Free insider special screens report
Our Input Date Search is an excellent tool to examine the latest insider trades for new long and short investment ideas, but it is only available to paid subscribers.

Click Here to Subscribe

close window
Feature available to paying subscribers only. Subscriber output is also not separated on different pages, so that print outs and Excel downloads contain all of a search's information.

Click Here to Subscribe

close window

Detailed Insider History for:
COSTAR GROUP INC: CSGP
Price: 9/12/25 52-Wk
High		 52-Wk
Low		 Mkt Cap (mm) Shrs Out (mm) 3-Mth Ave
Vol (m)		 Ind. Yield Short Int
% Float		 Inst. Owned Insider Owned
$86.80 $97.43 $68.26 $36,773 424 2,765 0.0% 4.7% 105.09% 1.18%
Exch Sector Industry Sub-Industry
NasdaqGS Services Business Services Services- Business Services, N E C
click column headers to sort
#
View Form
Insider Statistics
T N H M S
Filer Name
Insider Title
Trans Type
Dollar Value
Shares Traded
Trans Date From
Trans Date To
Trans Price From
Trans Price To
Total Holdings
Delta % Owned
Owned
Other Info
Input Date
1
    
 
MCCARTHY CHRISTINE M
DIR
JB
---
2,973
---
9/9/25
---
---
2,973
New
D
---
9/11/25 - 5:43:29 pm
2
    
 
SAMS LOUISE S
DIR
JB
---
3,291
---
9/9/25
---
---
19,409
20.4
D
---
9/11/25 - 5:42:36 pm
3
    
 
BERISFORD JOHN L
DIR
JB
---
2,973
---
9/9/25
---
---
2,973
New
D
---
9/11/25 - 5:42:13 pm
4
    
 
HILL JOHN W
DIR
JB
---
3,177
---
9/9/25
---
---
20,481
18.4
D
---
9/11/25 - 5:41:50 pm
5
    
 
MUSSLEWHITE ROBERT W
DIR
JB
---
3,121
---
9/9/25
---
---
18,277
20.6
D
---
9/11/25 - 5:41:27 pm
6
    
 
GLASER RACHEL C
DIR
JB
---
3,143
---
9/9/25
---
---
3,143
New
D
---
9/11/25 - 5:41:05 pm
7
    
 
BRUNNER ANGELIQUE G
DIR
JB
---
3,143
---
9/9/25
---
---
10,166
44.8
D
---
9/11/25 - 5:40:45 pm
8
1y
3
100%
-11%
2
SAINT FREDERICK G
PR
S
$2,258,250
25,000
---
8/28/25
---
$90.33
293,103
-7.9
D
---
9/2/25 - 6:18:14 pm
9
    
 
CANN CYNTHIA CAMMETT
CAO
JS
$68,442
719
---
8/1/25
---
$95.19
25,052
-2.8
D
---
8/5/25 - 4:23:07 pm
10
    
 
SAINT FREDERICK G
PR
JS
$136,693
1,436
---
8/1/25
---
$95.19
318,103
-0.4
D
---
8/5/25 - 4:21:33 pm
11
1y
3
100%
-11%
2
SAINT FREDERICK G
PR
S
$2,330,750
25,000
---
7/28/25
---
$93.23
319,539
-7.3
D
---
7/29/25 - 4:24:33 pm
12
    
 
CANN CYNTHIA CAMMETT
CAO
S
$188,764
2,033
---
7/28/25
---
$92.85
25,771
-7.3
D
---
7/29/25 - 4:21:51 pm
13
    
 
LOWN CHRISTIAN M
CFO
JS
$375,146
4,666
---
7/1/25
---
$80.40
130,157
-3.5
D
---
7/2/25 - 5:20:38 pm
14
    
 
CANN CYNTHIA CAMMETT
CAO
JS
$37,415
461
---
6/15/25
---
$81.16
27,804
-1.6
D
---
6/17/25 - 6:08:45 pm
15
1y
3
100%
-11%
2
SAINT FREDERICK G
PR
S
$2,027,500
25,000
---
6/11/25
---
$81.10
344,539
-6.8
D
---
6/12/25 - 4:36:34 pm
16
    
 
RUGGLES LISA
VP,OO
JS
$883
12
---
6/1/25
---
$73.56
211,201
-0.0
D
---
6/3/25 - 4:30:31 pm
17
    
 
BERISFORD JOHN L
DIR
3
---
---
---
4/6/25
---
---
---
---
---
---
4/14/25 - 4:15:07 pm
18
    
 
GLASER RACHEL C
DIR
3
---
---
---
4/6/25
---
---
---
---
---
---
4/14/25 - 4:15:06 pm
19
    
 
MCCARTHY CHRISTINE M
DIR
3
---
---
---
4/6/25
---
---
---
---
---
---
4/14/25 - 4:15:04 pm
20
    
 
RUGGLES LISA
VP,OO
JS
$154,153
1,958
---
3/15/25
---
$78.73
211,213
-0.9
D
---
3/18/25 - 8:34:28 pm
21
    
 
CANN CYNTHIA CAMMETT
CAO
JS
$93,767
1,191
---
3/15/25
---
$78.73
28,265
-4.0
D
---
3/18/25 - 8:34:18 pm
22
    
 
BOXER GENE
GC,SEC
JS
$37,869
481
---
3/15/25
---
$78.73
78,572
-0.6
D
---
3/18/25 - 8:34:08 pm
23
    
 
DESMARAIS MICHAEL J
HR
JS
$286,656
3,641
---
3/15/25
---
$78.73
79,118
-4.4
D
---
3/18/25 - 8:33:58 pm
24
    
 
SIMURO FRANK
CTO
JS
$448,761
5,700
---
3/15/25
---
$78.73
483,599
-1.2
D
---
3/18/25 - 8:33:47 pm
25
    
 
CANN CYNTHIA CAMMETT
CAO
S
$139,745
1,749
---
3/10/25
---
$79.90
29,456
-5.6
D
---
3/14/25 - 4:47:56 pm
26
    
 
CANN CYNTHIA CAMMETT
CAO
JB
---
1,498
---
3/5/25
---
---
33,715
4.6
D
R
3/7/25 - 6:06:41 pm
27
    
 
BOXER GENE
GC,SEC
JB
---
12,492
---
3/5/25
---
---
79,053
18.8
D
R
3/7/25 - 6:06:31 pm
28
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JB
---
76,232
---
3/5/25
---
---
1,672,832
4.8
D
R
3/7/25 - 6:06:21 pm
29
    
 
DESMARAIS MICHAEL J
HR
JB
---
9,026
---
3/5/25
---
---
82,759
12.2
D
R
3/7/25 - 6:06:11 pm
30
    
 
RUGGLES LISA
VP,OO
JS
$565,013
7,410
---
3/1/25
---
$76.25
213,171
-3.4
D
---
3/3/25 - 7:11:04 pm
31
    
 
DESMARAIS MICHAEL J
HR
JS
$296,841
3,893
---
3/1/25
---
$76.25
73,733
-5.0
D
---
3/3/25 - 7:10:51 pm
32
    
 
SAINT FREDERICK G
PR
JS
$629,215
8,252
---
3/1/25
---
$76.25
369,539
-2.2
D
---
3/3/25 - 7:10:41 pm
33
    
 
CANN CYNTHIA CAMMETT
CAO
JS
$61,991
813
---
3/1/25
---
$76.25
32,217
-2.5
D
---
3/3/25 - 7:10:31 pm
34
    
 
BOXER GENE
GC,SEC
JS
$277,855
3,644
---
3/1/25
---
$76.25
66,561
-5.2
D
---
3/3/25 - 7:10:21 pm
35
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JS
$3,148,820
41,296
---
3/1/25
---
$76.25
1,596,600
-2.5
D
---
3/3/25 - 7:10:11 pm
36
    
 
SIMURO FRANK
CTO
JS
$947,940
12,432
---
3/1/25
---
$76.25
489,299
-2.5
D
---
3/3/25 - 7:10:01 pm
37
    
 
DESMARAIS MICHAEL J
HR
JB
---
18,828
---
2/27/25
---
---
77,626
32.0
D
---
3/3/25 - 7:10:51 pm
38
    
 
CANN CYNTHIA CAMMETT
CAO
JB
---
4,035
---
2/27/25
---
---
33,030
13.9
D
---
3/3/25 - 7:10:31 pm
39
    
 
BOXER GENE
GC,SEC
JB
---
26,897
---
2/27/25
---
---
70,205
62.1
D
---
3/3/25 - 7:10:21 pm
40
    
 
LOWN CHRISTIAN M
CFO
JB
---
97,600
---
2/20/25
---
---
134,823
262.2
D
R
2/24/25 - 6:48:59 pm
41
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JB
---
451,440
---
2/20/25
---
---
1,637,896
38.0
D
R
2/24/25 - 6:48:48 pm
42
    
 
RUGGLES LISA
VP,OO
JB
---
65,440
---
2/20/25
---
---
220,581
42.2
D
R
2/24/25 - 6:48:39 pm
43
    
 
SIMURO FRANK
CTO
JB
---
130,640
---
2/20/25
---
---
501,731
35.2
D
R
2/24/25 - 6:48:28 pm
44
    
 
SAINT FREDERICK G
PR
JB
---
97,600
---
2/20/25
---
---
377,791
34.8
D
R
2/24/25 - 6:48:18 pm
45
    
 
SIMURO FRANK
CTO
JS
$406,219
5,485
---
2/15/25
---
$74.06
385,019
-1.4
D
---
2/19/25 - 4:57:12 pm
46
    
 
RUGGLES LISA
VP,OO
JS
$261,506
3,531
---
2/15/25
---
$74.06
169,074
-2.0
D
---
2/19/25 - 4:57:02 pm
47
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JS
$1,054,244
14,235
---
2/15/25
---
$74.06
1,248,863
-1.1
D
---
2/19/25 - 4:56:50 pm
48
    
 
SAINT FREDERICK G
PR
JS
$173,967
2,349
---
2/15/25
---
$74.06
293,245
-0.8
D
---
2/19/25 - 4:56:40 pm
49
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JS
$2,455,351
62,407
---
2/13/25
---
$73.27
1,186,456
-5.0
D
R
2/24/25 - 6:48:48 pm
50
    
 
RUGGLES LISA
VP,OO
JS
$548,133
13,933
---
2/13/25
---
$73.27
155,141
-8.2
D
R
2/24/25 - 6:48:39 pm
Subscribe Data Module Screens Alerts Newsletter Daily Ratings Reports Free Stuff
Home About FAQ Contact Disclaimer & Terms Of Use Privacy Transaction Codes
© 2025 InsiderInsights.com