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Detailed Insider History for:
ALLEGRO MICROSYSTEMS INC: ALGM
Price: 5/22/26 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
$45.95 $51.40 $22.41 $8,557 186 2,095 0.0% 11.2% 76.10% 32.98%
Exch Sector Industry Sub-Industry
NasdaqGS Manufacturing Electronic And Other Electrical Equipment And Components, Except Computer Equipment Semiconductors & Related Devices
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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
    
 
WEBSTER ROALD GRAHAM
VP,CAO
S
$234,165
5,217
---
5/21/26
---
$44.88
13,106
-28.5
D
---
5/22/26 - 4:16:04 pm
2
    
 
KENT IAN
VP,OO
S
$109,802
2,642
---
5/18/26
---
$41.56
25,392
-9.4
D
R
5/19/26 - 5:30:17 pm
3
    
 
HAGEN ERIN
VP
JS
$250,627
5,815
---
5/16/26
---
$43.10
33,337
-14.9
D
R
5/19/26 - 5:30:18 pm
4
    
 
KENT IAN
VP,OO
JS
$101,070
2,345
---
5/16/26
---
$43.10
28,034
-7.7
D
R
5/19/26 - 5:30:17 pm
5
    
 
D ANTILIO DEREK
VP,CFO,TR
JS
$1,630,904
37,840
---
5/16/26
---
$43.10
238,813
-13.7
D
R
5/19/26 - 5:30:14 pm
6
    
 
MADORMO RICHARD
VP,SO
JS
$234,421
5,439
---
5/16/26
---
$43.10
74,687
-6.8
D
R
5/19/26 - 5:30:11 pm
7
    
 
WEBSTER ROALD GRAHAM
VP,CAO
JS
$184,339
4,277
---
5/16/26
---
$43.10
18,323
-18.9
D
R
5/19/26 - 5:30:08 pm
8
    
 
DOOGUE MICHAEL
PR,CEO,DIR
JS
$2,607,895
60,508
---
5/16/26
---
$43.10
279,076
-17.8
D
R
5/19/26 - 5:30:03 pm
9
    
 
BRIANSKY SHARON
VP,GC,SEC
JS
$600,900
13,942
---
5/16/26
---
$43.10
79,753
-14.9
D
R
5/19/26 - 5:28:24 pm
10
    
 
COLEMAN TROY
VP
JS
$416,777
9,670
---
5/16/26
---
$43.10
81,976
-10.6
D
R
5/19/26 - 5:27:13 pm
11
    
 
LYNCH SUSAN D
DIR
S
$759,625
16,711
---
5/14/26
---
$45.46
12,805
-56.6
D
---
5/15/26 - 4:20:10 pm
12
    
 
WILLETT ROBERT
DIR
JB
---
1,094
---
5/13/26
---
---
1,094
New
D
R
5/15/26 - 4:20:17 pm
13
    
 
KENT IAN
VP,OO
JB
---
8,492
---
5/13/26
---
---
30,379
38.8
D
R
5/15/26 - 4:20:16 pm
14
    
 
MADORMO RICHARD
VP,SO
JB
---
19,815
---
5/13/26
---
---
80,126
32.9
D
R
5/15/26 - 4:20:14 pm
15
    
 
BRIANSKY SHARON
VP,GC,SEC
JB
---
18,463
---
5/13/26
---
---
93,695
24.5
D
R
5/15/26 - 4:20:13 pm
16
    
 
D ANTILIO DEREK
VP,CFO,TR
JB
---
59,877
---
5/13/26
---
---
276,653
27.6
D
R
5/15/26 - 4:20:11 pm
17
    
 
COLEMAN TROY
VP
JB
---
18,116
---
5/13/26
---
---
91,646
24.6
D
R
5/15/26 - 4:20:08 pm
18
    
 
DOOGUE MICHAEL
PR,CEO,DIR
JB
---
160,835
---
5/13/26
---
---
339,584
90.0
D
R
5/15/26 - 4:20:06 pm
19
    
 
HAGEN ERIN
VP
JB
---
9,058
---
5/13/26
---
---
39,152
30.1
D
R
5/15/26 - 4:20:04 pm
20
    
 
WEBSTER ROALD GRAHAM
VP,CAO
JB
---
5,300
---
5/13/26
---
---
22,600
30.6
D
R
5/15/26 - 4:20:03 pm
21
    
 
WILLETT ROBERT
DIR
3
---
---
---
5/13/26
---
---
---
---
---
---
5/15/26 - 4:15:04 pm
22
    
 
BRIANSKY SHARON
VP,GC,SEC
S
$425,380
8,948
---
5/11/26
---
$47.54
75,232
-10.6
D
---
5/13/26 - 4:16:05 pm
23
    
 
DOOGUE MICHAEL
PR,CEO,DIR
S
$1,421,251
30,089
---
5/11/26
---
$47.23
252,797
-10.6
I
---
5/13/26 - 4:16:04 pm
24
    
 
MADORMO RICHARD
VP,SO
JS
$211,705
6,498
---
3/24/26
---
$32.58
60,311
-9.7
D
R
3/25/26 - 4:15:07 pm
25
    
 
BRIANSKY SHARON
VP,GC,SEC
AS
$340,445
9,727
---
3/2/26
---
$35.00
84,180
-10.4
D
R,10b
3/3/26 - 4:15:11 pm
26
    
 
HAGEN ERIN
VP
S
$90,930
2,598
---
3/2/26
---
$35.00
30,094
-7.9
D
R
3/3/26 - 4:15:05 pm
27
    
 
BRIANSKY SHARON
VP,GC,SEC
JS
$332,132
9,107
---
2/27/26
---
$36.47
93,907
-8.8
D
R,10b
3/3/26 - 4:15:11 pm
28
    
 
D ANTILIO DEREK
VP,CFO,TR
JS
$364,518
9,995
---
2/27/26
---
$36.47
216,776
-4.4
D
R
3/3/26 - 4:15:09 pm
29
    
 
HAGEN ERIN
VP
JS
$72,794
1,996
---
2/27/26
---
$36.47
32,692
-5.8
D
R
3/3/26 - 4:15:05 pm
30
    
 
BRIANSKY SHARON
VP,GC,SEC
AS
$384,762
9,258
---
2/17/26
---
$41.56
103,014
-8.2
D
R,10b
2/18/26 - 4:16:04 pm
31
    
 
BRIANSKY SHARON
VP,GC,SEC
JS
$381,039
8,991
---
2/13/26
---
$42.38
112,272
-7.4
D
R,10b
2/18/26 - 4:16:04 pm
32
    
 
D ANTILIO DEREK
VP,CFO,TR
JS
$754,703
17,808
---
2/13/26
---
$42.38
226,771
-7.3
D
R
2/18/26 - 4:16:03 pm
33
    
 
KENT IAN
VP,OO
JB
---
9,183
---
2/2/26
---
---
21,887
72.3
D
R
3/4/26 - 4:16:03 pm
34
    
 
KENT IAN
VP,OO
3
---
---
---
1/5/26
---
---
12,704
---
D
R
1/9/26 - 4:16:03 pm
35
    
 
BRIANSKY SHARON
VP,GC,SEC
AS
$836,190
27,873
---
12/10/25
---
$30.00
121,263
-18.7
D
10b
12/12/25 - 4:16:03 pm
36
    
 
COLEMAN TROY
VP
JB
---
73,530
---
11/11/25
---
---
73,530
New
D
R
11/12/25 - 4:17:02 pm
37
    
 
COLEMAN TROY
VP
3
---
---
---
10/13/25
---
---
---
---
---
---
10/16/25 - 4:16:03 pm
38
    
 
WEBSTER ROALD GRAHAM
VP,CAO
S
$271,193
8,266
---
8/22/25
---
$32.81
17,300
-32.3
D
---
8/25/25 - 4:15:07 pm
39
    
 
LURY RICHARD R
DIR
S
$222,673
7,000
---
8/12/25
---
$31.81
18,857
-27.1
D
---
8/13/25 - 4:16:02 pm
40
    
 
PUMA MARY G
DIR
JB
---
5,932
---
8/7/25
---
---
17,483
51.4
D
R
8/8/25 - 4:16:13 pm
41
    
 
MARTIN JOSEPH R
DIR
JB
---
5,932
---
8/7/25
---
---
35,179
20.3
D
R
8/8/25 - 4:16:11 pm
42
    
 
SUZUKI YOSHIHIRO
DIR
JB
---
5,932
---
8/7/25
---
---
213,560
2.9
D
R
8/8/25 - 4:16:08 pm
43
    
 
PALEPU KRISHNA G
DIR
JB
---
5,932
---
8/7/25
---
---
9,961
147.2
D
R
8/8/25 - 4:16:07 pm
44
    
 
RAUBACHER JENNIE
DIR
JB
---
5,932
---
8/7/25
---
---
14,976
65.6
D
R
8/8/25 - 4:16:05 pm
45
    
 
LYNCH SUSAN D
DIR
JB
---
5,932
---
8/7/25
---
---
29,516
25.2
D
R
8/8/25 - 4:16:04 pm
46
    
 
LURY RICHARD R
DIR
JB
---
5,932
---
8/7/25
---
---
25,857
29.8
D
R
8/8/25 - 4:16:03 pm
47
    
 
HAGEN ERIN
VP
S
$157,241
5,043
---
8/4/25
---
$31.18
34,688
-12.7
D
---
8/5/25 - 4:16:03 pm
48
    
 
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
49
    
 
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
50
    
 
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
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