ALGM (Allegro MicroSystems, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by ALGM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | Jennie Raubacher | Director | Sell | — | — |
| 2026-08-12 | Erin Hagen | SVP, CHRO | Sell | — | — |
| 2026-08-07 | MARY G PUMA | Director | A | — | — |
| 2026-08-07 | JOSEPH R MARTIN | Director | A | — | — |
| 2026-08-07 | Yoshihiro Suzuki | Director | A | — | — |
| 2026-08-07 | Robert Willett | Director | A | — | — |
| 2026-08-07 | Krishna G. Palepu | Director | A | — | — |
| 2026-08-07 | Jennie Raubacher | Director | A | — | — |
| 2026-08-07 | BRIAN C WHITE | Director | A | — | — |
| 2026-08-07 | Krishna G. Palepu | Director | A | — | — |
| 2026-08-07 | Yoshihiro Suzuki | Director | A | — | — |
| 2026-08-07 | JOSEPH R MARTIN | Director | A | — | — |
| 2026-08-07 | BRIAN C WHITE | Director | A | — | — |
| 2026-08-07 | MARY G PUMA | Director | A | — | — |
| 2026-08-07 | Jennie Raubacher | Director | A | — | — |
| 2026-08-07 | Robert Willett | Director | A | — | — |
| 2026-06-18 | BRIAN C WHITE | Director | A | — | — |
| 2026-06-04 | Richard Madormo | SVP, Worldwide Sales | Sell | — | — |
| 2026-05-26 | Troy Coleman | SVP, General Manager, Products | Sell | — | — |
| 2026-05-22 | Roald Graham Webster | VP, Chief Accounting Officer | Sell | — | — |
| 2026-05-19 | Troy Coleman | SVP, General Manager, Products | F | — | — |
| 2026-05-19 | Sharon Briansky | SVP, GC and Secretary | F | — | — |
| 2026-05-19 | Michael Doogue | President and CEO | F | — | — |
| 2026-05-19 | Roald Graham Webster | VP, Chief Accounting Officer | F | — | — |
| 2026-05-19 | Richard Madormo | SVP, Worldwide Sales | F | — | — |
| 2026-05-19 | Derek D'Antilio | EVP, CFO & Treasurer | F | — | — |
| 2026-05-19 | Ian Kent | SVP, Global Operations | MIXED | — | — |
| 2026-05-19 | Erin Hagen | SVP, CHRO | F | — | — |
| 2026-05-15 | Roald Graham Webster | VP, Chief Accounting Officer | A | — | — |
| 2026-05-15 | Erin Hagen | SVP, CHRO | A | — | — |
| 2026-05-15 | Michael Doogue | President and CEO | A | — | — |
| 2026-05-15 | Troy Coleman | SVP, General Manager, Products | A | — | — |
| 2026-05-15 | Susan D Lynch | Director | Sell | — | — |
| 2026-05-15 | Derek D'Antilio | EVP, CFO & Treasurer | A | — | — |
| 2026-05-15 | Sharon Briansky | SVP, GC and Secretary | A | — | — |
| 2026-05-15 | Richard Madormo | SVP, Worldwide Sales | A | — | — |
| 2026-05-15 | Ian Kent | SVP, Global Operations | A | — | — |
| 2026-05-15 | Robert Willett | Director | A | — | — |
| 2026-05-13 | Michael Doogue | President and CEO | Sell | — | — |
| 2026-05-13 | Sharon Briansky | SVP, GC and Secretary | Sell | — | — |
| 2026-03-25 | Richard Madormo | SVP, Worldwide Sales | D | — | — |
| 2026-03-04 | Ian Kent | SVP, Global Operations | A | — | — |
| 2026-03-03 | Erin Hagen | SVP, CHRO | MIXED | — | — |
| 2026-03-03 | Derek D'Antilio | EVP, CFO & Treasurer | F | — | — |
| 2026-03-03 | Sharon Briansky | SVP, GC and Secretary | MIXED | — | — |
| 2026-02-18 | Derek D'Antilio | EVP, CFO & Treasurer | F | — | — |
| 2026-02-18 | Sharon Briansky | SVP, GC and Secretary | MIXED | — | — |
| 2025-12-12 | Sharon Briansky | SVP, GC and Secretary | Sell | — | — |
| 2025-11-12 | Troy Coleman | SVP, General Manager, Products | A | — | — |
| 2025-08-25 | Roald Graham Webster | VP, Chief Accounting Officer | Sell | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 59,732,782 | — |
| — | 10%+ Owner | 33,087,099 | — |
| — | 10%+ Owner | 17,649,247 | — |
| — | President and CEO | 1,900,751 | — |
| — | SVP, CFO & Treasurer | 779,994 | — |
| — | President and CEO | 531,873 | — |
| — | President and CEO | 356,113 | — |
| — | SVP of Worldwide Sales | 266,339 | — |
| — | EVP, CFO & Treasurer | 238,813 | — |
| — | Director | 219,808 | — |
| — | Director | 217,811 | — |
| — | SVP and General Counsel | 144,988 | — |
| — | SVP, CHRO | 126,718 | — |
| — | SVP, Products | 123,084 | — |
| — | SVP, GC and Secretary | 79,753 | — |
| — | SVP, General Manager, Products | 77,476 | — |
| — | SVP of Operations and Quality | 73,336 | — |
| — | SVP, Worldwide Sales | 69,687 | — |
| — | Director | 39,430 | — |
| — | SVP, CHRO | 31,052 | — |
| — | Director | 26,746 | — |
| — | SVP, Global Operations | 25,392 | — |
| — | Director | 21,734 | — |
| — | Director | 18,857 | — |
| — | Director | 14,762 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the ALGM quote page; the site-wide leaderboard is on the insider transactions hub.