Allegro MicroSystems, Inc. (ALGM) Insider Trading
Over the last 3 months, ALGM insiders made 0 open-market buys and 7 sales, a net sale of -$3.4M (SEC Form 4). Over the last 6 months, 227 institutions increased and 206 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
7
Net (3m)
-$3.4M
Insider trades by month Buys Sells
Jun
Aug
Dec
Feb
May
Jun
Context3-month price +63.6%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 4, 2026 | Madormo Richardofficer: SVP, Worldwide Sales | Sell | 5,000 | $52.72 |
| May 26, 2026 | Coleman Troyofficer: SVP, General Manager, Products | Sell | 4,500 | $45.72 |
| May 22, 2026 | Webster Roald Grahamofficer: VP, Chief Accounting Officer | Sell | 5,217 | $44.88 |
| May 19, 2026 | Coleman Troyofficer: SVP, General Manager, Products | Tax | 9,670 | $43.10 |
| May 19, 2026 | Briansky Sharonofficer: SVP, GC and Secretary | Tax | 13,942 | $43.10 |
| May 19, 2026 | Doogue Michaeldirector, officer: President and CEO | Tax | 60,508 | $43.10 |
| May 19, 2026 | Webster Roald Grahamofficer: VP, Chief Accounting Officer | Tax | 4,277 | $43.10 |
| May 19, 2026 | Madormo Richardofficer: SVP, Worldwide Sales | Tax | 5,439 | $43.10 |
| May 19, 2026 | D'Antilio Derekofficer: EVP, CFO & Treasurer | Tax | 37,840 | $43.10 |
| May 19, 2026 | Kent Ianofficer: SVP, Global Operations | Sell | 2,642 | $41.56 |
| May 19, 2026 | Kent Ianofficer: SVP, Global Operations | Tax | 2,345 | $43.10 |
| May 19, 2026 | Hagen Erinofficer: SVP, CHRO | Tax | 5,815 | $43.10 |
| May 15, 2026 | Briansky Sharonofficer: SVP, GC and Secretary | Grant | 2,611 | — |
| May 15, 2026 | D'Antilio Derekofficer: EVP, CFO & Treasurer | Grant | 29,439 | — |
| May 15, 2026 | Briansky Sharonofficer: SVP, GC and Secretary | Grant | 15,852 | — |
| May 15, 2026 | Madormo Richardofficer: SVP, Worldwide Sales | Grant | 19,815 | — |
| May 15, 2026 | Kent Ianofficer: SVP, Global Operations | Grant | 8,492 | — |
| May 15, 2026 | Willett Robertdirector | Grant | 1,094 | — |
| May 15, 2026 | D'Antilio Derekofficer: EVP, CFO & Treasurer | Grant | 30,438 | — |
| May 15, 2026 | Lynch Susan Ddirector | Sell | 16,711 | $45.46 |
| May 15, 2026 | Coleman Troyofficer: SVP, General Manager, Products | Grant | 18,116 | — |
| May 15, 2026 | Doogue Michaeldirector, officer: President and CEO | Grant | 77,135 | — |
| May 15, 2026 | Doogue Michaeldirector, officer: President and CEO | Grant | 83,700 | — |
| May 15, 2026 | Hagen Erinofficer: SVP, CHRO | Grant | 9,058 | — |
| May 15, 2026 | Webster Roald Grahamofficer: VP, Chief Accounting Officer | Grant | 4,756 | — |
| May 15, 2026 | Webster Roald Grahamofficer: VP, Chief Accounting Officer | Grant | 544 | — |
| May 13, 2026 | Briansky Sharonofficer: SVP, GC and Secretary | Sell | 8,948 | $47.54 |
| May 13, 2026 | Doogue Michaeldirector, officer: President and CEO | Sell | 30,089 | $47.23 |
| Mar 4, 2026 | Kent Ianofficer: SVP, Global Operations | Grant | 9,183 | — |
| Feb 18, 2026 | Briansky Sharonofficer: SVP, GC and Secretary | Tax | 8,991 | $42.38 |
Source: ALGM SEC Form 4 filings, latest Jun 4, 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
227
New positions
110
Reduced
206
Sold out
89
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 27.4M | May 15, 2026 |
| FMR LLC | Reduced | 23.6M | Feb 17, 2026 |
| VANGUARD GROUP INC | Reduced | 14.2M | Jan 29, 2026 |
| CAPITAL RESEARCH GLOBAL INVESTORS | Reduced | 13.1M | Feb 11, 2026 |
| BLACKROCK, INC. | Increased | 12.5M | May 13, 2026 |
| CAPITAL RESEARCH GLOBAL INVESTORS | Reduced | 12.4M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 12.2M | Feb 12, 2026 |
| INVESCO LTD. | Increased | 8.8M | May 12, 2026 |
| JPMORGAN CHASE & CO | Increased | 8.7M | May 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 7.9M | May 8, 2026 |
| INVESCO LTD. | Increased | 7.7M | Feb 19, 2026 |
| JPMORGAN CHASE & CO | Reduced | 7.3M | Feb 11, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 5.5M | May 15, 2026 |
| STATE STREET CORP | Increased | 5.4M | Feb 13, 2026 |
| STATE STREET CORP | Reduced | 5.2M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.