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Allegro Microsystems, Inc. (ALGM)

Allegro Microsystems, Inc. (ALGM) Insider Trading

Directors, officers and holders of more than 10% of ALGM report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 89 transactions on file: 0 with code P, 13 with code S and 37 with other codes.

DateInsiderCodeShares
Sep 30, 2026Willett RobertA Award619
Aug 17, 2026Raubacher JennieS Sale1,000
Aug 10, 2026Hagen ErinS Sale2,285
Aug 5, 2026Raubacher JennieA Award4,251
Aug 5, 2026MARTIN JOSEPH RA Award4,251
Aug 5, 2026Suzuki YoshihiroA Award4,251
Aug 5, 2026Palepu Krishna G.A Award4,251
Aug 5, 2026PUMA MARY GA Award4,251
Aug 5, 2026WHITE BRIAN CA Award4,251
Aug 5, 2026Willett RobertA Award4,251
Jun 17, 2026WHITE BRIAN CA Award594
Jun 3, 2026Madormo RichardS Sale5,000
May 22, 2026Coleman TroyS Sale4,500
May 21, 2026Webster Roald GrahamS Sale5,217
May 18, 2026Kent IanS Sale2,642
May 16, 2026Briansky SharonF Tax Payment13,942
May 16, 2026Hagen ErinF Tax Payment5,815
May 16, 2026Kent IanF Tax Payment2,345
May 16, 2026D'Antilio DerekF Tax Payment37,840
May 16, 2026Madormo RichardF Tax Payment5,439
May 16, 2026Webster Roald GrahamF Tax Payment4,277
May 16, 2026Doogue MichaelF Tax Payment60,508
May 16, 2026Coleman TroyF Tax Payment9,670
May 14, 2026Lynch Susan DS Sale16,711
May 13, 2026Webster Roald GrahamA Award4,756
May 13, 2026Coleman TroyA Award18,116
May 13, 2026Hagen ErinA Award9,058
May 13, 2026Webster Roald GrahamA Award544
May 13, 2026Doogue MichaelA Award77,135
May 13, 2026Doogue MichaelA Award83,700
May 13, 2026Willett RobertA Award1,094
May 13, 2026Kent IanA Award8,492
May 13, 2026Madormo RichardA Award19,815
May 13, 2026Briansky SharonA Award15,852
May 13, 2026Briansky SharonA Award2,611
May 13, 2026D'Antilio DerekA Award29,439
May 13, 2026D'Antilio DerekA Award30,438
May 11, 2026Briansky SharonS Sale8,948
May 11, 2026Doogue MichaelS Sale30,089
Mar 24, 2026Madormo RichardD Disposition6,498
Mar 2, 2026Hagen ErinS Sale2,598
Mar 2, 2026Briansky SharonS Sale9,727
Feb 27, 2026Briansky SharonF Tax Payment9,107
Feb 27, 2026D'Antilio DerekF Tax Payment9,995
Feb 27, 2026Hagen ErinF Tax Payment1,996
Feb 17, 2026Briansky SharonS Sale9,258
Feb 13, 2026Briansky SharonF Tax Payment8,991
Feb 13, 2026D'Antilio DerekF Tax Payment17,808
Feb 2, 2026Kent IanA Award9,183
Dec 10, 2025Briansky SharonS Sale27,873

The full Form 4 history is on the ALGM company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.