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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:
ALLEGRO MICROSYSTEMS INC: ALGM
Price: 6/13/25 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
$28.65 $33.26 $16.38 $5,297 185 2,949 0.0% 15.3% 86.03% 33.33%
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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
    
 
LURY RICHARD R
DIR
S
$94,395
3,100
---
6/11/25
---
$30.45
19,925
-13.5
D
---
6/12/25 - 4:19:18 pm
2
    
 
LURY RICHARD R
DIR
S
$189,036
6,849
---
6/4/25
---
$27.60
23,025
-22.9
D
---
6/6/25 - 4:17:06 pm
3
    
 
DOOGUE MICHAEL
PR,CEO,DIR
JS
$597,792
21,730
---
5/16/25
---
$27.51
215,549
-9.2
D
R
5/19/25 - 4:20:15 pm
4
    
 
WEBSTER ROALD GRAHAM
VP,CAO
JS
$136,119
4,948
---
5/16/25
---
$27.51
25,566
-16.2
D
R
5/19/25 - 4:20:14 pm
5
    
 
HAGEN ERIN
VP
JS
$134,771
4,899
---
5/16/25
---
$27.51
39,731
-11.0
D
R
5/19/25 - 4:20:10 pm
6
    
 
BRIANSKY SHARON
VP,GC,SEC
JS
$514,767
18,712
---
5/16/25
---
$27.51
149,136
-11.1
D
R
5/19/25 - 4:20:08 pm
7
    
 
D ANTILIO DEREK
VP,CFO,TR
JS
$822,852
29,911
---
5/16/25
---
$27.51
244,579
-10.9
D
R
5/19/25 - 4:20:07 pm
8
    
 
DOOGUE MICHAEL
PR,CEO,DIR
JB
---
150,226
---
5/15/25
---
---
237,279
172.6
D
R
5/19/25 - 4:20:15 pm
9
    
 
WEBSTER ROALD GRAHAM
VP,CAO
JB
---
9,765
---
5/15/25
---
---
30,514
47.1
D
R
5/19/25 - 4:20:14 pm
10
    
 
MADORMO RICHARD
VP,SO
JB
---
37,557
---
5/15/25
---
---
66,809
128.4
D
R
5/19/25 - 4:20:12 pm
11
    
 
HAGEN ERIN
VP
JB
---
18,153
---
5/15/25
---
---
44,630
68.6
D
R
5/19/25 - 4:20:10 pm
12
    
 
BRIANSKY SHARON
VP,GC,SEC
JB
---
35,053
---
5/15/25
---
---
167,848
26.4
D
R
5/19/25 - 4:20:08 pm
13
    
 
D ANTILIO DEREK
VP,CFO,TR
JB
---
65,098
---
5/15/25
---
---
274,490
31.1
D
R
5/19/25 - 4:20:07 pm
14
    
 
DOOGUE MICHAEL
PR,CEO,DIR
JB
---
18,489
---
5/13/25
---
---
87,053
27.0
D
R
5/14/25 - 4:30:24 pm
15
    
 
D ANTILIO DEREK
VP,CFO,TR
JB
---
21,295
---
5/13/25
---
---
209,392
11.3
D
R
5/14/25 - 4:30:21 pm
16
    
 
WEBSTER ROALD GRAHAM
VP,CAO
JB
---
1,002
---
5/13/25
---
---
20,749
5.1
D
R
5/14/25 - 4:30:19 pm
17
    
 
HAGEN ERIN
VP
JB
---
1,222
---
5/13/25
---
---
26,477
4.8
D
R
5/14/25 - 4:30:14 pm
18
    
 
BRIANSKY SHARON
VP,GC,SEC
JB
---
14,656
---
5/13/25
---
---
132,795
12.4
D
R
5/14/25 - 4:30:13 pm
19
    
 
MADORMO RICHARD
VP,SO
3
---
---
---
3/29/25
---
---
29,252
---
D
R
3/31/25 - 4:16:05 pm
20
    
 
D ANTILIO DEREK
VP,CFO,TR
JB
---
20,671
---
2/27/25
---
---
188,097
12.3
D
R
3/3/25 - 4:16:07 pm
21
    
 
HAGEN ERIN
VP
JB
---
4,594
---
2/27/25
---
---
25,255
22.2
D
R
3/3/25 - 4:16:05 pm
22
    
 
BRIANSKY SHARON
VP,GC,SEC
JB
---
18,834
---
2/27/25
---
---
118,139
19.0
D
R
3/3/25 - 4:16:04 pm
23
    
 
PALEPU KRISHNA G
DIR
JB
---
4,029
---
1/31/25
---
---
4,029
New
D
R
2/3/25 - 4:26:59 pm
24
    
 
PALEPU KRISHNA G
DIR
3
---
---
---
1/31/25
---
---
550
---
I
---
2/3/25 - 4:24:29 pm
25
    
 
DOOGUE MICHAEL
VP,CTO
JS
$44,618
2,319
---
11/18/24
---
$19.24
62,404
-3.6
D
R
11/19/24 - 4:16:05 pm
26
    
 
DOOGUE MICHAEL
VP,CTO
B
$285,000
15,000
---
11/18/24
---
$19.00
246,086
6.5
I
R
11/19/24 - 4:16:05 pm
27
    
 
GLOVER MAX R
VP,SO
JS
$50,871
2,644
---
11/18/24
---
$19.24
266,339
-1.0
D
R
11/19/24 - 4:16:03 pm
28
    
 
NARGOLWALA VINEET A
PR,CEO,DIR
B
$99,446
5,000
---
11/5/24
---
$19.87
356,113
1.4
D
---
11/6/24 - 4:16:05 pm
29
    
 
NARAYAN SUMAN
VP
JS
$17,514
714
---
8/30/24
---
$24.53
123,084
-0.6
D
R
9/3/24 - 4:15:03 pm
30
    
 
ALDRICH DAVID J
DIR
JB
$185,021
6,873
---
8/8/24
---
$26.92
26,746
34.6
D
R
8/9/24 - 4:16:09 pm
31
    
 
MARTIN JOSEPH R
DIR
JB
$185,021
6,873
---
8/8/24
---
$26.92
29,247
30.7
D
R
8/9/24 - 4:16:08 pm
32
    
 
SUZUKI YOSHIHIRO
DIR
JB
$185,021
6,873
---
8/8/24
---
$26.92
207,628
3.4
D
R
8/9/24 - 4:16:06 pm
33
    
 
SCHORR PAUL IV
DIR
JB
$185,021
6,873
---
8/8/24
---
$26.92
10,199
206.6
D
R
8/9/24 - 4:16:05 pm
34
    
 
RAUBACHER JENNIE
DIR
JB
$185,021
6,873
---
8/8/24
---
$26.92
9,044
316.6
D
R
8/9/24 - 4:16:04 pm
35
    
 
LYNCH SUSAN D
DIR
JB
$185,021
6,873
---
8/8/24
---
$26.92
23,584
41.1
D
R
8/9/24 - 4:16:04 pm
36
    
 
LURY RICHARD R
DIR
JB
$185,021
6,873
---
8/8/24
---
$26.92
29,874
29.9
D
R
8/9/24 - 4:16:03 pm
37
    
 
PUMA MARY G
DIR
JB
$185,021
6,873
---
8/8/24
---
$26.92
11,551
146.9
D
R
8/9/24 - 4:16:03 pm
38
    
 
SANKEN ELECTRIC CO LTD
BO
JS*
$232,001,008
10,017,315
---
8/7/24
---
$23.16
59,732,784
-14.4
D
---
8/9/24 - 6:15:03 am
39
    
 
NARGOLWALA VINEET A
PR,CEO,DIR
JS
$185,650
7,681
---
8/1/24
---
$24.17
351,113
-2.1
D
R
8/2/24 - 4:15:03 pm
40
    
 
SANKEN ELECTRIC CO LTD
BO
JS*
$665,849,984
28,750,000
---
7/29/24
---
$23.16
69,750,096
-29.2
D
---
7/31/24 - 6:05:06 am
41
    
 
NARGOLWALA VINEET A
PR,CEO,DIR
JS
$1,050,242
36,066
---
6/13/24
---
$29.12
358,794
-9.1
D
R
6/14/24 - 4:18:03 pm
42
    
 
NARGOLWALA VINEET A
PR,CEO,DIR
JB
---
82,788
---
6/11/24
---
---
394,860
26.5
D
R
6/13/24 - 4:18:14 pm
43
    
 
GLOVER MAX R
VP,SO
JB
---
20,697
---
6/11/24
---
---
268,983
8.3
D
R
6/13/24 - 4:18:12 pm
44
    
 
D ANTILIO DEREK
VP,CFO,TR
JB
---
34,495
---
6/11/24
---
---
167,426
25.9
D
R
6/13/24 - 4:18:11 pm
45
    
 
DOOGUE MICHAEL
VP,CTO
JB
---
24,837
---
6/11/24
---
---
64,723
62.3
D
R
6/13/24 - 4:18:09 pm
46
    
 
BRIANSKY SHARON
VP,GC,SEC
JB
---
17,248
---
6/11/24
---
---
99,305
21.0
D
R
6/13/24 - 4:18:08 pm
47
    
 
NARAYAN SUMAN
VP
JB
---
17,248
---
6/11/24
---
---
123,798
16.2
D
R
6/13/24 - 4:18:06 pm
48
    
 
HAGEN ERIN
VP
JB
---
9,659
---
6/11/24
---
---
20,661
87.8
D
R
6/13/24 - 4:18:05 pm
49
    
 
WEBSTER ROALD GRAHAM
VP,CAO
JB
---
5,520
---
6/11/24
---
---
19,747
38.8
D
R
6/13/24 - 4:18:03 pm
50
    
 
NARAYAN SUMAN
VP
JS
$45,954
1,570
---
6/3/24
---
$29.27
106,550
-1.5
D
R
6/4/24 - 4:15:08 pm
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