InsiderSource
ALGM

ALLEGRO MICROSYSTEMS, INC.

SEC CIK 866291
$47.96 +23.3% · 90 days
90-day buys
$0
0 open-market
90-day sells
$3.42M
7 open-market
Net insider flow
−$3.42M
Net selling
Filings shown
30
Most recent
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At a glance

Over the last 90 days, insiders at ALGM have sold a net $3.42M of stock (0 open-market buys vs 7 sells).

Largest recent trade: Doogue Michael sold $1.42M of ALGM, trimming their stake 11%.

Most active filer: Madormo Richard, with 4 transactions among the recent filings shown.

Insider transaction history

Form 4 filings for ALGM, newest first
View on SEC EDGAR ↗
ALGM
ALLEGRO MICROSYSTEMS, INC.
Sell Madormo Richard · SVP, Worldwide Sales · Open-market sale · filed 1w ago ΔOwn −6.7%

Madormo Richard sold $263.6K of ALGM, trimming their stake 7%.

−$263.6K
5,000 sh @ $53
ALGM
ALLEGRO MICROSYSTEMS, INC.
Sell Coleman Troy · SVP, General Manager, Products · Open-market sale · filed 2w ago ΔOwn −5.5%

Coleman Troy sold $205.7K of ALGM, trimming their stake 5%.

−$205.7K
4,500 sh @ $46
ALGM
ALLEGRO MICROSYSTEMS, INC.
Sell Webster Roald Graham · VP, Chief Accounting Officer · Open-market sale · filed 3w ago ΔOwn −28%

Webster Roald Graham sold $234.2K of ALGM, trimming their stake 28%.

−$234.2K
5,217 sh @ $45
ALGM
ALLEGRO MICROSYSTEMS, INC.
Sell Kent Ian · SVP, Global Operations · Open-market sale · filed 3w ago ΔOwn −9.4%

Kent Ian sold $109.8K of ALGM, trimming their stake 9%.

−$109.8K
2,642 sh @ $42
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ALGM
ALLEGRO MICROSYSTEMS, INC.
Sell Lynch Susan D · Director · Open-market sale · filed 4w ago ΔOwn −57%

Lynch Susan D sold $759.6K of ALGM, trimming their stake 57%.

−$759.6K
16,711 sh @ $45
ALGM
ALLEGRO MICROSYSTEMS, INC.
Sell Briansky Sharon · SVP, GC and Secretary · Open-market sale · filed May 13, 2026 ΔOwn −11%

Briansky Sharon sold $425.4K of ALGM, trimming their stake 11%.

−$425.4K
8,948 sh @ $48
ALGM
ALLEGRO MICROSYSTEMS, INC.
Sell Doogue Michael · Director, President and CEO · Open-market sale · filed May 13, 2026 ΔOwn −11%

Doogue Michael sold $1.42M of ALGM, trimming their stake 11%.

−$1.42M
30,089 sh @ $47
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About ALGM insider activity

This page tracks every recent Form 4 filed for ALLEGRO MICROSYSTEMS, INC. with the U.S. Securities and Exchange Commission. Form 4 is the disclosure that company insiders — officers, directors, and holders of more than 10% of the stock — must file within two business days of buying or selling shares.

The summary above nets open-market purchases against open-market sales over the trailing 90 days. Open-market trades (codes P and S) tend to carry the most signal because they reflect a deliberate choice to put money in or take it out, as opposed to routine grants, option exercises, or tax-withholding events. Use the badges on each row to tell them apart, and always confirm details against the original filing before drawing conclusions.

Frequently asked questions

How often is ALGM insider data updated?

Continuously. We read from SEC EDGAR, so new Form 4 filings for ALLEGRO MICROSYSTEMS, INC. usually appear here within minutes of being accepted by the SEC.

What does "net insider flow" mean?

It is the total dollar value of open-market insider purchases minus open-market sales over the last 90 days. A positive number (green) means insiders bought more than they sold; a negative number (red) means the reverse.

Why do some rows show grants or option exercises instead of buys?

Insiders receive stock through compensation as well as buying it outright. Form 4 captures all of these. We label each transaction by its SEC code so you can focus on open-market activity if you prefer.

Is this investment advice?

No. InsiderSource presents public filing data for informational purposes only. Insider activity is one of many factors to consider and is never a recommendation to buy or sell.