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 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
COSTAR GROUP INC: CSGP
Price: 3/14/23 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
$67.62 $85.37 $53.51 $27,400 407 2,452 0.0% 1.2% 99.18% 1.13%
Exch Sector Industry Sub-Industry
NasdaqGS Services Business Services Services- Business Services, N E C
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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
    
 
SIMURO FRANK
CTO
OB
$499,774
23,590
---
3/17/23
$18.28
$34.21
356,783
7.1
D
R
3/21/23 - 5:09:06 pm
2
    
 
RUGGLES LISA
VP
JS
$168,036
2,485
---
3/15/23
---
$67.62
186,693
-1.3
D
R
3/17/23 - 5:32:54 pm
3
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JS
$626,229
9,261
---
3/15/23
---
$67.62
974,309
-0.9
D
R
3/17/23 - 5:32:37 pm
4
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JB
---
37,844
---
3/15/23
---
---
983,570
4.0
D
R
3/17/23 - 5:32:37 pm
5
    
 
DESMARAIS MICHAEL J
HR
JS
$149,440
2,210
---
3/15/23
---
$67.62
45,928
-4.6
D
R
3/17/23 - 5:32:24 pm
6
    
 
DESMARAIS MICHAEL J
HR
JB
---
3,292
---
3/15/23
---
---
48,138
7.3
D
R
3/17/23 - 5:32:24 pm
7
    
 
WHEELER SCOTT T
CFO
JS
$809,750
11,975
---
3/15/23
---
$67.62
372,255
-3.1
D
R
3/17/23 - 5:32:08 pm
8
    
 
WHEELER SCOTT T
CFO
JB
---
26,534
---
3/15/23
---
---
384,230
7.4
D
R
3/17/23 - 5:32:08 pm
9
    
 
SAINT FREDERICK G
PR
JS
$726,442
10,743
---
3/15/23
---
$67.62
267,887
-3.9
D
R
3/17/23 - 5:31:50 pm
10
    
 
BOXER GENE
GC,SEC
JS
$25,087
371
---
3/15/23
---
$67.62
18,035
-2.0
D
---
3/17/23 - 5:31:29 pm
11
    
 
DESMARAIS MICHAEL J
HR
S
$394,016
5,600
---
3/8/23
---
$70.36
44,846
-11.1
D
---
3/9/23 - 4:57:24 pm
12
    
 
WHEELER SCOTT T
CFO
JS
$704,622
9,972
---
3/1/23
---
$70.66
365,000
-2.7
D
---
3/3/23 - 6:00:26 pm
13
    
 
SAINT FREDERICK G
PR
JS
$451,376
6,388
---
3/1/23
---
$70.66
283,014
-2.2
D
---
3/3/23 - 5:57:37 pm
14
    
 
RUGGLES LISA
VP
JS
$429,966
6,085
---
3/1/23
---
$70.66
193,562
-3.0
D
---
3/3/23 - 5:54:29 pm
15
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JS
$1,711,668
24,224
---
3/1/23
---
$70.66
964,087
-2.5
D
---
3/3/23 - 5:51:26 pm
16
    
 
DESMARAIS MICHAEL J
HR
JS
$41,901
593
---
3/1/23
---
$70.66
50,446
-1.2
D
---
3/3/23 - 5:48:05 pm
17
    
 
SIMURO FRANK
CTO
OS
$429,966
6,085
---
3/1/23
---
$70.66
337,577
-1.8
D
---
3/3/23 - 5:45:59 pm
18
    
 
SIMURO FRANK
CTO
OS
$2,468,570
35,220
---
3/1/23
---
$70.09
337,577
-9.4
D
---
3/3/23 - 5:45:59 pm
19
    
 
SIMURO FRANK
CTO
OE
$359,948
35,220
---
3/1/23
---
$10.22
372,797
10.4
D
---
3/3/23 - 5:45:59 pm
20
    
 
BOXER GENE
GC,SEC
JB
$1,000,052
14,139
---
2/24/23
---
$70.73
18,406
331.4
D
R
2/27/23 - 5:05:36 pm
21
    
 
DESMARAIS MICHAEL J
HR
JB
$1,000,052
14,139
---
2/24/23
---
$70.73
51,039
38.3
D
R
2/27/23 - 4:58:02 pm
22
    
 
RUGGLES LISA
VP
JS
$173,446
16,538
2/14/23
2/15/23
---
$76.78
154,086
-9.7
D
R
2/16/23 - 7:43:07 pm
23
    
 
WHEELER SCOTT T
CFO
JS
$317,946
25,559
2/14/23
2/15/23
---
$76.78
295,513
-8.0
D
R
2/16/23 - 7:42:42 pm
24
    
 
SAINT FREDERICK G
PR
JS
$173,446
16,538
2/14/23
2/15/23
---
$76.78
243,841
-6.4
D
R
2/16/23 - 7:42:18 pm
25
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JS
$957,523
81,008
2/14/23
2/15/23
---
$76.78
714,882
-10.2
D
R
2/16/23 - 7:42:00 pm
26
    
 
SIMURO FRANK
CTO
JS
$173,600
16,540
2/14/23
2/15/23
---
$76.78
262,323
-5.9
D
R
2/16/23 - 7:41:42 pm
27
    
 
RUGGLES LISA
VP
JB
---
47,820
---
2/14/23
---
---
201,906
31.0
D
R
2/16/23 - 7:43:07 pm
28
    
 
WHEELER SCOTT T
CFO
JB
---
83,600
---
2/14/23
---
---
379,113
28.3
D
R
2/16/23 - 7:42:42 pm
29
    
 
SAINT FREDERICK G
PR
JB
---
47,820
---
2/14/23
---
---
291,661
19.6
D
R
2/16/23 - 7:42:18 pm
30
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JB
---
285,900
---
2/14/23
---
---
1,000,782
40.0
D
R
2/16/23 - 7:42:00 pm
31
    
 
SIMURO FRANK
CTO
JB
---
83,600
---
2/14/23
---
---
345,923
31.9
D
R
2/16/23 - 7:41:42 pm
32
1y
6
33%
31%
2
HILL JOHN W
DIR
S
$288,058
3,650
---
11/3/22
---
$78.92
20,734
-15.0
D
R
11/4/22 - 4:27:13 pm
33
    
 
KLEIN MICHAEL R
DIR
JS
---
15,000
---
11/1/22
---
---
2,063,647
-0.7
D
---
2/15/23 - 4:40:24 pm
34
    
 
WHEELER SCOTT T
CFO
JS
---
2,610
---
10/28/22
---
---
316,931
-0.8
D
---
2/15/23 - 4:43:56 pm
35
    
 
DESMARAIS MICHAEL J
HR
S
$107,322
1,296
---
10/28/22
---
$82.81
36,900
-3.4
D
R
10/31/22 - 4:17:07 pm
36
    
 
DESMARAIS MICHAEL J
HR
JS
$99,112
1,423
---
10/1/22
---
$69.65
38,196
-3.6
D
R
10/4/22 - 5:56:26 pm
37
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JB
---
48
---
9/14/22
---
---
783,419
0.0
D
R
9/15/22 - 4:57:51 pm
38
    
 
SAMS LOUISE S
DIR
JB
---
3,583
---
9/14/22
---
---
8,883
67.6
D
R
9/15/22 - 4:56:51 pm
39
    
 
GLOSSERMAN MICHAEL J
DIR
JB
---
3,745
---
9/14/22
---
---
97,552
4.0
D
R
9/15/22 - 4:54:38 pm
40
    
 
HILL JOHN W
DIR
JB
---
3,786
---
9/14/22
---
---
24,384
18.4
D
R
9/15/22 - 4:53:52 pm
41
    
 
KLEIN MICHAEL R
DIR
JB
---
3,880
---
9/14/22
---
---
2,078,647
0.2
D
R
9/15/22 - 4:52:29 pm
42
    
 
MUSSLEWHITE ROBERT W
DIR
JB
---
3,380
---
9/14/22
---
---
8,331
68.3
D
R
9/15/22 - 4:50:52 pm
43
    
 
KAPLAN LAURA COX
DIR
JB
---
3,542
---
9/14/22
---
---
10,681
49.6
D
R
9/15/22 - 4:48:26 pm
44
    
 
NASSETTA CHRISTOPHER J
DIR
JB
---
3,880
---
9/14/22
---
---
271,060
1.5
D
R
9/15/22 - 4:47:32 pm
45
1y
6
33%
31%
2
HILL JOHN W
DIR
S
$104,286
1,400
---
8/10/22
---
$74.49
20,598
-6.4
D
R
8/11/22 - 4:15:58 pm
46
1y
11
36%
25%
2
KLEIN MICHAEL R
DIR
S
$10,863,000
150,000
---
8/5/22
---
$72.42
2,074,767
-6.7
D
R
8/9/22 - 7:39:20 pm
47
    
 
DESMARAIS MICHAEL J
HR
S
$145,020
2,000
---
8/3/22
---
$72.51
39,619
-4.8
D
R
8/5/22 - 4:57:03 pm
48
    
 
RUGGLES LISA
VP
JS
$670
11
---
6/1/22
---
$60.94
168,365
-0.0
D
R
6/3/22 - 4:32:03 pm
49
1y
6
33%
31%
2
HILL JOHN W
DIR
S
$99,873
1,750
---
5/24/22
---
$57.07
21,998
-7.4
D
R
5/26/22 - 5:30:09 pm
50
    
 
DESMARAIS MICHAEL J
HR
S
$63,140
1,000
---
5/2/22
---
$63.14
41,619
-2.3
D
R
5/4/22 - 4:50:22 pm
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