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 JS
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Detailed Insider History for:
MAGNITE INC: MGNI
Price: 8/21/26 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
$23.50 $26.65 $10.82 $3,370 143 2,952 0.0% 9.2% 100.87% 1.23%
Exch Sector Industry Sub-Industry
NasdaqGS Services Business Services Services- Computer Programming, Data Processing, Etc.
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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
    
 
BUCKLEY SEAN PATRICK
O
AS
$270,043
11,030
8/17/26
8/18/26
$24.31
$25.00
293,060
-3.6
D
R,10b
8/18/26 - 4:14:39 pm
2
    
 
BUONASERA DAVID
CTO
JS
$200,362
8,102
---
8/15/26
---
$24.73
252,734
-3.1
D
R
8/18/26 - 4:25:12 pm
3
    
 
EVANS KATIE SEITZ
O
JS
$277,075
11,204
---
8/15/26
---
$24.73
485,636
-2.3
D
R
8/18/26 - 4:23:15 pm
4
    
 
SALTZ AARON
LO
JS
$139,156
5,627
---
8/15/26
---
$24.73
264,389
-2.1
D
R
8/18/26 - 4:21:26 pm
5
    
 
GEPHART BRIAN
CAO
JS
$93,702
3,789
---
8/15/26
---
$24.73
102,328
-3.6
D
R
8/18/26 - 4:20:14 pm
6
    
 
BARRETT MICHAEL G
CEO,DIR
JS
$257,291
10,404
---
8/15/26
---
$24.73
392,670
-2.6
D
R
8/18/26 - 4:19:07 pm
7
    
 
DAY DAVID
CFO
JS
$350,424
14,170
---
8/15/26
---
$24.73
452,861
-3.0
D
R
8/18/26 - 4:17:48 pm
8
    
 
BUCKLEY SEAN PATRICK
O
JS
$289,712
11,715
---
8/15/26
---
$24.73
304,090
-3.7
D
R,10b
8/18/26 - 4:14:39 pm
9
1y
8
88%
-41%
2
CAINE PAUL
DIR
AS
$187,500
7,500
---
8/14/26
---
$25.00
149,901
-4.8
D
10b
8/18/26 - 4:16:17 pm
10
    
 
DAY DAVID
CFO
JS
---
26,258
---
8/13/26
---
---
467,031
-5.3
D
---
8/14/26 - 4:16:40 pm
11
    
 
GEPHART BRIAN
CAO
S
$307,982
12,479
---
8/10/26
---
$24.68
106,117
-10.5
D
---
8/12/26 - 4:54:23 pm
12
1y
2
50%
-32%
4
LAM RACHEL
DIR
S
$241,600
10,000
---
8/10/26
---
$24.16
230,620
-4.2
D
---
8/12/26 - 4:51:26 pm
13
1y
8
88%
-41%
2
CAINE PAUL
DIR
AS
$121,750
5,000
---
8/10/26
---
$24.35
157,401
-3.1
D
10b
8/12/26 - 4:49:07 pm
14
    
 
BUCKLEY SEAN PATRICK
O
OS
$1,645,316
67,179
---
8/6/26
---
$23.00
315,805
-17.5
D
10b
8/7/26 - 5:14:08 pm
15
    
 
BUCKLEY SEAN PATRICK
O
OE
$398,972
28,703
---
8/6/26
---
$13.90
382,984
8.1
D
10b
8/7/26 - 5:14:08 pm
16
    
 
KNOPPER DOUGLAS S
DIR
AS
$848,297
37,337
---
8/6/26
---
$22.72
88,473
-29.7
D
10b
8/7/26 - 5:10:56 pm
17
    
 
BUONASERA DAVID
CTO
AS
$179,478
7,649
---
8/6/26
$22.81
$25.00
260,836
-2.8
D
10b
8/7/26 - 5:09:41 pm
18
1y
21
71%
-22%
2
EVANS KATIE SEITZ
O
OS
$480,000
20,000
---
8/6/26
---
$24.00
496,840
-3.9
D
10b
8/7/26 - 5:06:14 pm
19
    
 
EVANS KATIE SEITZ
O
OE
$103,200
20,000
---
8/6/26
---
$5.16
516,840
4.0
D
10b
8/7/26 - 5:06:14 pm
20
1y
22
50%
12%
2
BARRETT MICHAEL G
CEO,DIR
OS
$6,678,953
293,968
---
8/6/26
---
$22.72
403,074
-42.2
D
10b
8/7/26 - 5:00:16 pm
21
    
 
BARRETT MICHAEL G
CEO,DIR
OE
$1,705,014
293,968
---
8/6/26
---
$5.80
697,042
72.9
D
10b
8/7/26 - 5:00:16 pm
22
1y
22
50%
12%
2
BARRETT MICHAEL G
CEO,DIR
OS
$785,429
38,596
---
7/15/26
---
$20.35
403,074
-8.7
D
10b
7/17/26 - 5:00:10 pm
23
    
 
BARRETT MICHAEL G
CEO,DIR
OE
$223,857
38,596
---
7/15/26
---
$5.80
441,670
9.6
D
10b
7/17/26 - 5:00:10 pm
24
1y
8
88%
-41%
2
CAINE PAUL
DIR
AS
$103,200
5,000
---
7/10/26
---
$20.64
162,401
-3.0
D
10b
7/14/26 - 5:50:55 pm
25
    
 
BUONASERA DAVID
CTO
AS
$25,704
1,224
---
7/7/26
---
$21.00
268,485
-0.5
D
10b
7/9/26 - 4:32:58 pm
26
    
 
BUCKLEY SEAN PATRICK
O
AS
$404,470
19,233
---
7/7/26
---
$21.03
354,281
-5.1
D
10b
7/9/26 - 4:27:32 pm
27
    
 
BUONASERA DAVID
CTO
AS
$187,520
9,376
---
7/1/26
---
$20.00
269,709
-3.4
D
10b
7/2/26 - 7:07:34 pm
28
1y
22
50%
12%
2
BARRETT MICHAEL G
CEO,DIR
OS
$1,462,500
75,000
---
6/29/26
---
$19.50
403,074
-15.7
D
10b
7/1/26 - 4:49:58 pm
29
    
 
BARRETT MICHAEL G
CEO,DIR
OE
$435,000
75,000
---
6/29/26
---
$5.80
478,074
18.6
D
10b
7/1/26 - 4:49:58 pm
30
    
 
BUCKLEY SEAN PATRICK
O
AS
$365,427
19,233
---
6/17/26
---
$19.00
373,514
-4.9
D
10b
6/18/26 - 7:51:24 pm
31
    
 
BUONASERA DAVID
CTO
AS
$246,934
13,699
6/15/26
6/17/26
$17.00
$19.00
279,085
-4.7
D
10b
6/17/26 - 6:45:17 pm
32
    
 
KNOPPER DOUGLAS S
DIR
AS
$675,800
37,337
---
6/16/26
---
$18.10
125,810
-22.9
D
10b
6/17/26 - 6:48:37 pm
33
1y
22
50%
12%
2
BARRETT MICHAEL G
CEO,DIR
OS
$4,712,908
278,596
6/15/26
6/16/26
$16.59
$17.50
403,074
-40.9
D
10b
6/17/26 - 6:44:19 pm
34
    
 
BARRETT MICHAEL G
CEO,DIR
OE
$1,615,857
278,596
6/15/26
6/16/26
---
$5.80
581,670
91.9
D
10b
6/17/26 - 6:44:19 pm
35
    
 
KNOPPER DOUGLAS S
DIR
AS
$169,349
10,766
---
6/10/26
---
$15.73
163,147
-6.2
D
R,10b
6/10/26 - 8:50:12 pm
36
1y
1
100%
-17%
3
PEARSON DAVID T
DIR
AS
$168,488
10,766
---
6/10/26
---
$15.65
79,001
-12.0
D
R,10b
6/10/26 - 8:45:44 pm
37
    
 
CAINE PAUL
DIR
JB
---
13,798
---
6/8/26
---
---
167,401
9.0
D
R
6/10/26 - 8:58:47 pm
38
    
 
YU DIANE
DIR
JB
---
13,798
---
6/8/26
---
---
81,279
20.4
D
R
6/10/26 - 8:54:37 pm
39
    
 
SPILLANE ROBERT F
DIR
JB
---
13,798
---
6/8/26
---
---
57,715
31.4
D
R
6/10/26 - 8:54:31 pm
40
    
 
HARDEN SARAH PATRICIA
DIR
JB
---
13,798
---
6/8/26
---
---
163,737
9.2
D
R
6/10/26 - 8:50:42 pm
41
    
 
KNOPPER DOUGLAS S
DIR
JB
---
13,798
---
6/8/26
---
---
173,913
8.6
D
R,10b
6/10/26 - 8:50:12 pm
42
    
 
ROSSMAN JAMES
DIR
JB
---
13,798
---
6/8/26
---
---
107,477
14.7
D
R
6/10/26 - 8:47:08 pm
43
    
 
LAM RACHEL
DIR
JB
---
13,798
---
6/8/26
---
---
240,620
6.1
D
R
6/10/26 - 8:47:05 pm
44
    
 
PEARSON DAVID T
DIR
JB
---
13,798
---
6/8/26
---
---
89,767
18.2
D
R,10b
6/10/26 - 8:45:44 pm
45
    
 
BUONASERA DAVID
CTO
AS
$21,135
1,409
---
6/1/26
---
$15.00
292,784
-0.5
D
10b
6/3/26 - 4:45:07 pm
46
    
 
SPILLANE ROBERT F
DIR
S
$133,300
10,000
---
5/19/26
---
$13.33
43,917
-18.5
D
---
5/21/26 - 5:00:25 pm
47
    
 
BARRETT MICHAEL G
CEO,DIR
JS
$133,379
10,404
---
5/15/26
---
$12.82
403,074
-2.5
D
R
5/19/26 - 5:00:22 pm
48
    
 
BUCKLEY SEAN PATRICK
PR
JS
$154,084
12,019
---
5/15/26
---
$12.82
392,747
-3.0
D
R
5/19/26 - 5:00:19 pm
49
    
 
EVANS KATIE SEITZ
PR,OO
JS
$143,635
11,204
---
5/15/26
---
$12.82
496,840
-2.2
D
R
5/19/26 - 5:00:16 pm
50
    
 
DAY DAVID
CFO
JS
$181,659
14,170
---
5/15/26
---
$12.82
493,289
-2.8
D
R
5/19/26 - 5:00:16 pm
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