Allegro MicroSystems Inc.

Last updated September 27, 2026

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Organization details

Legal name: Allegro MicroSystems Inc.
Ownership: Public
Status: Active
Sector (GICS): Information Technology
SIC code: 3674 — Semiconductors & Related Devices
Headquarters city: Manchester
Headquarters state / province: New Hampshire
Headquarters country: United States
Fiscal year end: March
Ticker symbol: ALGM
Primary stock exchange: Nasdaq

Identifiers

SEC CIK: 0000866291
EIN: 46-2405937
Wikidata ID: Q18616140

Board of directors

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Brian C. White · Director
Since 2026
David J. Aldrich · Director
Since 2023
Jennie Raubacher · Director
Since 2024
Joseph R. Martin · Director
Since 2023
Krishna G. Palepu · Director
Since 2025
Mary G. Puma · Director Overboarded
Since 2023
Michael Doogue · Director · President and CEO
Since 2025
Paul Schorr IV · Director
Since 2024
Reza Kazerounian · Director
Since 2023
Richard R. Lury · Director
Since 2023
Robert Willett · Director
Since 2026
Susan D. Lynch · Director Overboarded
Since 2023
Vineet A. Nargolwala · Director · President and CEO
Since 2023
Yoshihiro Suzuki · Director
Since 2023

Chief executives

Vineet A. Nargolwala · President and CEO

Dates unknown

Michael Doogue · President and CEO

Dates unknown

Director election results

Annual meeting of August 5, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

8 of this board's directors also sit on 17 other boards. 7 are in the same sector.

Shared director Other board Same sector +1 more in the list below

Azenta Inc.
via Joseph R. Martin and Krishna G. Palepu
Applied Aerospace & Defense Inc.
via Susan D. Lynch
Axcelis Technologies Inc.
via Mary G. Puma
Belden Inc
via David J. Aldrich
Brady Corporation
via Vineet A. Nargolwala
Ciena Corporation Same sector
via Mary G. Puma
Clean Harbors Inc.
via Robert Willett
Cognex Corporation Same sector
via Robert Willett
Crane Company
via Susan D. Lynch
Crane NXT Co.
via Susan D. Lynch
Entegris Inc.
via Mary G. Puma
FormFactor Inc. FormFactor Inc. Same sector
via Brian C. White
Mobix Labs Inc. Same sector
via David J. Aldrich
Nordson Corporation
via Mary G. Puma
Onto Innovation Inc. Same sector
via Susan D. Lynch
Penguin Solutions Inc. Same sector
via Mary G. Puma
indie Semiconductor Inc. Same sector
via David J. Aldrich

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $0; 0 purchases by 0 insiders
Sold, last 12 months: $5,218,585; 13 sales by 9 insiders

Date	Insider	Transaction	Shares	Price	Value
Aug 17, 2026	Jennie Raubacher Director	Open-market sale	−1,000	$45.32	$45,320
Aug 10, 2026	Hagen Erin Officer (SVP, CHRO)	Open-market sale	−2,285	$44.39	$101,431
Aug 5, 2026	Krishna G. Palepu Director	Grant or award	+4,251	—	—
Aug 5, 2026	Mary G. Puma Director	Grant or award	+4,251	—	—
Aug 5, 2026	Joseph R. Martin Director	Grant or award	+4,251	—	—
Aug 5, 2026	Yoshihiro Suzuki Director	Grant or award	+4,251	—	—
Jun 17, 2026	Brian C. White Director	Grant or award	+594	—	—
Jun 3, 2026	Madormo Richard Officer (SVP, Worldwide Sales)	Open-market sale	−5,000	$52.72	$263,600
May 22, 2026	Coleman Troy Officer (SVP, General Manager, Products)	Open-market sale	−4,500	$45.72	$205,740
May 21, 2026	Webster Roald Graham Officer (VP, Chief Accounting Officer)	Open-market sale	−5,217	$44.89	$234,191
May 18, 2026	Kent Ian Officer (SVP, Global Operations)	Open-market sale	−2,642	$41.56	$109,802
May 16, 2026	Kent Ian Officer (SVP, Global Operations)	Shares withheld for tax	−2,345	$43.10	$101,070
May 16, 2026	Hagen Erin Officer (SVP, CHRO)	Shares withheld for tax	−5,815	$43.10	$250,627
May 16, 2026	D'Antilio Derek Officer (EVP, CFO & Treasurer)	Shares withheld for tax	−37,840	$43.10	$1,630,904
May 16, 2026	Madormo Richard Officer (SVP, Worldwide Sales)	Shares withheld for tax	−5,439	$43.10	$234,421

Peers

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Questions about Allegro MicroSystems Inc.

Who is the CEO of Allegro MicroSystems Inc.?

Vineet A. Nargolwala is Allegro MicroSystems Inc.'s President and CEO.

How many directors are on Allegro MicroSystems Inc.'s board?

Allegro MicroSystems Inc.'s board has 14 directors: Brian C. White, David J. Aldrich, Jennie Raubacher, Joseph R. Martin, Krishna G. Palepu, Mary G. Puma, Michael Doogue, Paul Schorr IV, Reza Kazerounian, Richard R. Lury and 4 others.

Are Allegro MicroSystems Inc. insiders buying or selling shares?

Over the last 12 months, Allegro MicroSystems Inc. insiders made no open-market purchases and sold $5.2 million of shares in 13 sales on the open market, as reported to the SEC on Forms 4 and 5.

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