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)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 18, 2026 | Raubacher Jenniedirector | Sell | 1,000 | $45.32 |
| Aug 12, 2026 | Hagen Erinofficer: SVP, CHRO | Sell | 2,285 | $44.39 |
| Aug 7, 2026 | MARTIN JOSEPH Rdirector | Grant | 4,251 | — |
| Aug 7, 2026 | Palepu Krishna G.director | Grant | 4,251 | — |
| Aug 7, 2026 | Raubacher Jenniedirector | Grant | 4,251 | — |
| Aug 7, 2026 | Willett Robertdirector | Grant | 4,251 | — |
| Aug 7, 2026 | WHITE BRIAN Cdirector | Grant | 4,251 | — |
| Aug 7, 2026 | PUMA MARY Gdirector | Grant | 4,251 | — |
| Aug 7, 2026 | Suzuki Yoshihirodirector | Grant | 4,251 | — |
| Jun 18, 2026 | WHITE BRIAN Cdirector | Grant | 594 | — |
| 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 | Webster Roald Grahamofficer: VP, Chief Accounting Officer | Tax | 4,277 | $43.10 |
| May 19, 2026 | Hagen Erinofficer: SVP, CHRO | Tax | 5,815 | $43.10 |
| May 19, 2026 | Kent Ianofficer: SVP, Global Operations | Tax | 2,345 | $43.10 |
| May 19, 2026 | Kent Ianofficer: SVP, Global Operations | Sell | 2,642 | $41.56 |
| May 19, 2026 | D'Antilio Derekofficer: EVP, CFO & Treasurer | Tax | 37,840 | $43.10 |
| May 19, 2026 | Madormo Richardofficer: SVP, Worldwide Sales | Tax | 5,439 | $43.10 |
| May 19, 2026 | Doogue Michaeldirector, officer: President and CEO | Tax | 60,508 | $43.10 |
| May 19, 2026 | Briansky Sharonofficer: SVP, GC and Secretary | Tax | 13,942 | $43.10 |
| May 19, 2026 | Coleman Troyofficer: SVP, General Manager, Products | Tax | 9,670 | $43.10 |
| May 15, 2026 | Doogue Michaeldirector, officer: President and CEO | Grant | 77,135 | — |
| 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 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 | 83,700 | — |
| May 15, 2026 | Willett Robertdirector | Grant | 1,094 | — |
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
| Institution | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 27.4M | May 15, 2026 |
| FMR LLC | Reduced | 25.6M | Aug 13, 2026 |
| BlackRock, Inc. | Increased | 13.9M | Aug 7, 2026 |
| Invesco Ltd. | Increased | 13.7M | Aug 14, 2026 |
| JPMORGAN CHASE & CO | Increased | 12.7M | Aug 12, 2026 |
| BLACKROCK, INC. | Increased | 12.5M | May 13, 2026 |
| CAPITAL RESEARCH GLOBAL INVESTORS | Reduced | 12.4M | May 13, 2026 |
| Capital Research Global Investors | Reduced | 12.0M | Aug 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 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 7.7M | Aug 13, 2026 |
| STATE STREET CORP | Increased | 5.7M | Aug 7, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 5.5M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 5.5M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.