Allegro MicroSystems, Inc. (ALGM) Insider Trading

Over the last 3 months, ALGM insiders made 0 open-market buys and 3 sales, a net sale of -$410K (SEC Form 4). Over the last 6 months, 244 institutions increased and 199 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
3
Net (3m)
-$410.4K
Insider trades by month Buys Sells
Aug
Dec
Feb
May
Jun
Aug
Context3-month price -25.6%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Aug 18, 2026Raubacher JenniedirectorSell1,000$45.32
Aug 12, 2026Hagen Erinofficer: SVP, CHROSell2,285$44.39
Aug 7, 2026MARTIN JOSEPH RdirectorGrant4,251
Aug 7, 2026Palepu Krishna G.directorGrant4,251
Aug 7, 2026Raubacher JenniedirectorGrant4,251
Aug 7, 2026Willett RobertdirectorGrant4,251
Aug 7, 2026WHITE BRIAN CdirectorGrant4,251
Aug 7, 2026PUMA MARY GdirectorGrant4,251
Aug 7, 2026Suzuki YoshihirodirectorGrant4,251
Jun 18, 2026WHITE BRIAN CdirectorGrant594
Jun 4, 2026Madormo Richardofficer: SVP, Worldwide SalesSell5,000$52.72
May 26, 2026Coleman Troyofficer: SVP, General Manager, ProductsSell4,500$45.72
May 22, 2026Webster Roald Grahamofficer: VP, Chief Accounting OfficerSell5,217$44.88
May 19, 2026Webster Roald Grahamofficer: VP, Chief Accounting OfficerTax4,277$43.10
May 19, 2026Hagen Erinofficer: SVP, CHROTax5,815$43.10
May 19, 2026Kent Ianofficer: SVP, Global OperationsTax2,345$43.10
May 19, 2026Kent Ianofficer: SVP, Global OperationsSell2,642$41.56
May 19, 2026D'Antilio Derekofficer: EVP, CFO & TreasurerTax37,840$43.10
May 19, 2026Madormo Richardofficer: SVP, Worldwide SalesTax5,439$43.10
May 19, 2026Doogue Michaeldirector, officer: President and CEOTax60,508$43.10
May 19, 2026Briansky Sharonofficer: SVP, GC and SecretaryTax13,942$43.10
May 19, 2026Coleman Troyofficer: SVP, General Manager, ProductsTax9,670$43.10
May 15, 2026Doogue Michaeldirector, officer: President and CEOGrant77,135
May 15, 2026Hagen Erinofficer: SVP, CHROGrant9,058
May 15, 2026Webster Roald Grahamofficer: VP, Chief Accounting OfficerGrant4,756
May 15, 2026Webster Roald Grahamofficer: VP, Chief Accounting OfficerGrant544
May 15, 2026Lynch Susan DdirectorSell16,711$45.46
May 15, 2026Coleman Troyofficer: SVP, General Manager, ProductsGrant18,116
May 15, 2026Doogue Michaeldirector, officer: President and CEOGrant83,700
May 15, 2026Willett RobertdirectorGrant1,094

Source: ALGM SEC Form 4 filings, latest Aug 18, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their ALGM positions over the last 6 months (SEC Form 13F).

Increased
244
New positions
174
Reduced
199
Sold out
39
Largest moves
InstitutionActionSharesFiled
FMR LLCIncreased27.4MMay 15, 2026
FMR LLCReduced25.6MAug 13, 2026
BlackRock, Inc.Increased13.9MAug 7, 2026
Invesco Ltd.Increased13.7MAug 14, 2026
JPMORGAN CHASE & COIncreased12.7MAug 12, 2026
BLACKROCK, INC.Increased12.5MMay 13, 2026
CAPITAL RESEARCH GLOBAL INVESTORSReduced12.4MMay 13, 2026
Capital Research Global InvestorsReduced12.0MAug 12, 2026
INVESCO LTD.Increased8.8MMay 12, 2026
JPMORGAN CHASE & COIncreased8.7MMay 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position7.9MMay 8, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCReduced7.7MAug 13, 2026
STATE STREET CORPIncreased5.7MAug 7, 2026
VANGUARD CAPITAL MANAGEMENT LLCIncreased5.5MAug 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position5.5MMay 15, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.