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 B  AB  JB*  OB  OE*  OE
 S  AS  JS*  OS  OS*  3
 JB
 JS
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Detailed Insider History for:
COSTAR GROUP INC: CSGP
Price: 12/20/24 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
$71.44 $100.38 $68.26 $29,288 410 2,852 0.0% 3.3% 101.70% 1.13%
Exch Sector Industry Sub-Industry
NasdaqGS Services Business Services Services- Business Services, N E C
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#
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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
    
 
SAINT FREDERICK G
PR
JB
---
69,160
---
2/22/24
---
---
291,707
31.1
D
R
2/26/24 - 8:10:04 pm
2
    
 
WHEELER SCOTT T
CFO
JS
$449,041
15,747
---
2/22/24
---
$83.98
301,861
-5.0
D
R
2/26/24 - 8:09:36 pm
3
    
 
DESMARAIS MICHAEL J
HR
JB
---
16,976
---
2/22/24
---
---
65,059
35.3
D
---
2/26/24 - 8:09:17 pm
4
    
 
RUGGLES LISA
VP,OO
JS
$371,863
11,628
---
2/22/24
---
$83.98
141,813
-7.6
D
R
2/26/24 - 8:09:04 pm
5
    
 
RUGGLES LISA
VP,OO
JB
---
57,560
---
2/22/24
---
---
199,373
40.6
D
R
2/26/24 - 8:09:04 pm
6
    
 
BOXER GENE
GC,SEC
JB
---
18,189
---
2/22/24
---
---
36,224
100.9
D
---
2/26/24 - 8:08:41 pm
7
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JS
$1,852,431
53,258
---
2/22/24
---
$83.98
904,755
-5.6
D
R
2/26/24 - 8:08:29 pm
8
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JB
---
367,840
---
2/22/24
---
---
1,272,595
40.7
D
R
2/26/24 - 8:08:29 pm
9
    
 
WHEELER SCOTT T
CFO
JS
$284,992
3,462
---
2/15/24
---
$82.32
317,608
-1.1
D
---
2/20/24 - 5:05:54 pm
10
    
 
FLORANCE ANDREW C
PR,CEO,DIR
JS
$1,341,487
16,296
---
2/15/24
---
$82.32
958,013
-1.7
D
---
2/20/24 - 5:05:26 pm
11
    
 
SIMURO FRANK
CTO
JS
$348,461
4,233
---
2/15/24
---
$82.32
286,970
-1.5
D
---
2/20/24 - 5:05:03 pm
12
    
 
RUGGLES LISA
VP
JS
$194,851
2,367
---
2/15/24
---
$82.32
153,441
-1.5
D
---
2/20/24 - 5:04:27 pm
13
    
 
SAINT FREDERICK G
PR
JS
$193,370
2,349
---
2/15/24
---
$82.32
235,428
-1.0
D
---
2/20/24 - 5:04:00 pm
14
    
 
KLEIN MICHAEL R
DIR
JS
---
60,000
---
11/29/23
---
---
2,003,725
-2.9
D
---
12/1/23 - 4:04:07 pm
15
1y
12
42%
20%
2
HILL JOHN W
DIR
S
$253,891
3,020
---
11/28/23
---
$84.07
17,870
-14.5
D
---
11/29/23 - 4:08:39 pm
16
1y
6
33%
25%
3
NASSETTA CHRISTOPHER J
DIR
S
$116,790
1,500
---
11/8/23
---
$77.86
273,615
-0.5
D
---
11/9/23 - 4:05:18 pm
17
    
 
HILL JOHN W
DIR
JB
---
3,956
---
10/30/23
---
---
20,890
23.4
D
---
11/1/23 - 4:13:51 pm
18
    
 
BRUNNER ANGELIQUE G
DIR
JB
---
3,532
---
10/30/23
---
---
3,532
New
D
---
11/1/23 - 4:13:34 pm
19
    
 
KAPLAN LAURA COX
DIR
JB
---
3,702
---
10/30/23
---
---
14,383
34.7
D
---
11/1/23 - 4:13:20 pm
20
    
 
GLOSSERMAN MICHAEL J
DIR
JB
---
3,913
---
10/30/23
---
---
101,465
4.0
D
---
11/1/23 - 4:13:10 pm
21
    
 
NASSETTA CHRISTOPHER J
DIR
JB
---
4,055
---
10/30/23
---
---
275,115
1.5
D
---
11/1/23 - 4:12:55 pm
22
    
 
SAMS LOUISE S
DIR
JB
---
3,744
---
10/30/23
---
---
12,627
42.1
D
---
11/1/23 - 4:12:40 pm
23
    
 
KLEIN MICHAEL R
DIR
JB
---
4,055
---
10/30/23
---
---
2,063,725
0.2
D
---
11/1/23 - 4:12:26 pm
24
    
 
MUSSLEWHITE ROBERT W
DIR
JB
---
3,532
---
10/30/23
---
---
11,863
42.4
D
---
11/1/23 - 4:12:08 pm
25
    
 
DESMARAIS MICHAEL J
HR
JS
$127,868
1,663
---
10/1/23
---
$76.89
44,265
-3.6
D
---
10/2/23 - 4:17:52 pm
26
    
 
BRUNNER ANGELIQUE G
DIR
3
---
---
---
8/1/23
---
---
---
---
D
---
8/2/23 - 9:14:11 am
27
1y
4
25%
17%
1
RUGGLES LISA
VP
S
$2,785,933
30,474
---
6/30/23
---
$91.42
156,208
-16.3
D
---
6/30/23 - 4:05:04 pm
28
1y
10
40%
15%
1
WHEELER SCOTT T
CFO
S
$1,922,629
21,530
---
6/28/23
---
$89.30
324,714
-6.2
D
---
6/30/23 - 4:06:13 pm
29
    
 
SIMURO FRANK
CTO
S
$8,274,695
92,300
---
6/27/23
---
$89.65
264,483
-25.9
D
---
6/28/23 - 4:08:39 pm
30
1y
12
42%
20%
2
HILL JOHN W
DIR
S
$129,855
1,500
---
6/26/23
---
$86.57
16,934
-8.1
D
---
6/28/23 - 4:07:22 pm
31
1y
10
40%
15%
1
WHEELER SCOTT T
CFO
S
$1,990,376
24,670
---
6/12/23
---
$80.68
346,244
-6.7
D
---
6/14/23 - 6:12:31 pm
32
1y
2
100%
-10%
2
SAINT FREDERICK G
PR
S
$2,407,200
30,000
---
6/7/23
---
$80.24
237,887
-11.2
D
---
6/9/23 - 4:05:57 pm
33
    
 
RUGGLES LISA
VP
JS
$873
11
---
6/1/23
---
$79.40
186,682
-0.0
D
---
6/5/23 - 4:10:56 pm
34
    
 
KLEIN MICHAEL R
DIR
JS
---
3,977
---
5/23/23
---
---
2,059,670
-0.2
D
---
5/25/23 - 4:47:29 pm
35
    
 
WHEELER SCOTT T
CFO
JS
---
5,051
---
5/2/23
---
---
367,204
-1.4
D
---
5/5/23 - 4:15:13 pm
36
    
 
WHEELER SCOTT T
CFO
JB
---
1,341
---
5/2/23
---
---
1,727
347.4
I
---
5/5/23 - 4:15:13 pm
37
1y
29
38%
22%
2
FLORANCE ANDREW C
PR,CEO,DIR
OS
$27,677,888
360,530
---
4/28/23
---
$76.77
974,309
-27.0
D
---
5/2/23 - 5:45:53 pm
38
    
 
FLORANCE ANDREW C
PR,CEO,DIR
OE
$6,590,489
360,530
---
4/28/23
---
$18.28
1,334,839
37.0
D
---
5/2/23 - 5:45:53 pm
39
1y
12
42%
20%
2
HILL JOHN W
DIR
S
$157,550
2,300
---
3/31/23
---
$68.50
18,434
-11.1
D
---
4/4/23 - 4:39:39 pm
40
    
 
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
41
    
 
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
42
    
 
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
43
    
 
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
44
    
 
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
45
    
 
DESMARAIS MICHAEL J
HR
JB
---
3,292
---
3/15/23
---
---
48,138
7.3
D
R
3/17/23 - 5:32:24 pm
46
    
 
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
47
    
 
WHEELER SCOTT T
CFO
JB
---
26,534
---
3/15/23
---
---
384,230
7.4
D
R
3/17/23 - 5:32:08 pm
48
    
 
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
49
    
 
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
50
    
 
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
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