ALGM · Insider Trading
Allegro MicroSystems, Inc. Common Stock
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-01 | Robert Willett | Director | A | +618 deriv. | — |
| 2026-08-18 | Jennie Raubacher | Director | Sell | −1,000 | −$45.32K |
| 2026-08-12 | Erin Hagen | SVP, CHRO | Sell | −2,285 | −$101.43K |
| 2026-08-07 | Mary G Puma | Director | A | +4,251 | — |
| 2026-08-07 | Joseph R Martin | Director | A | +4,251 | — |
| 2026-08-07 | Yoshihiro Suzuki | Director | A | +4,251 | — |
| 2026-08-07 | Robert Willett | Director | A | +4,251 deriv. | — |
| 2026-08-07 | Jennie Raubacher | Director | A | +4,251 deriv. | — |
| 2026-08-07 | Krishna G. Palepu | Director | A | +4,251 | — |
| 2026-08-07 | Brian C White | Director | A | +4,251 deriv. | — |
| 2026-08-07 | Krishna G. Palepu | Director | A | +4,251 | — |
| 2026-08-07 | Yoshihiro Suzuki | Director | A | +4,251 | — |
| 2026-08-07 | Joseph R Martin | Director | A | +4,251 | — |
| 2026-08-07 | Brian C White | Director | A | +4,251 deriv. | — |
| 2026-08-07 | Mary G Puma | Director | A | +4,251 | — |
| 2026-08-07 | Jennie Raubacher | Director | A | +4,251 deriv. | — |
| 2026-08-07 | Robert Willett | Director | A | +4,251 deriv. | — |
| 2026-06-18 | Brian C White | Director | A | +594 | — |
| 2026-06-04 | Richard Madormo | SVP, Worldwide Sales | Sell | −5,000 | −$263.60K |
| 2026-05-26 | Troy Coleman | SVP, General Manager, Products | Sell | −4,500 | −$205.74K |
| 2026-05-22 | Roald Graham Webster | VP, Chief Accounting Officer | Sell | −5,217 | −$234.17K |
| 2026-05-19 | Troy Coleman | SVP, General Manager, Products | F | −9,670 | −$416.78K |
| 2026-05-19 | Sharon Briansky | SVP, GC and Secretary | F | −13,942 | −$600.90K |
| 2026-05-19 | Michael Doogue | President and CEO | F | −60,508 | −$2.61M |
| 2026-05-19 | Roald Graham Webster | VP, Chief Accounting Officer | F | −4,277 | −$184.34K |
| 2026-05-19 | Richard Madormo | SVP, Worldwide Sales | F | −5,439 | −$234.42K |
| 2026-05-19 | Derek D'Antilio | EVP, CFO & Treasurer | F | −37,840 | −$1.63M |
| 2026-05-19 | Ian Kent | SVP, Global Operations | MIXED | −4,987 | −$210.87K |
| 2026-05-19 | Erin Hagen | SVP, CHRO | F | −5,815 | −$250.63K |
| 2026-05-15 | Roald Graham Webster | VP, Chief Accounting Officer | A | +5,300 | — |
| 2026-05-15 | Erin Hagen | SVP, CHRO | A | +9,058 | — |
| 2026-05-15 | Michael Doogue | President and CEO | A | +160,835 | — |
| 2026-05-15 | Troy Coleman | SVP, General Manager, Products | A | +18,116 | — |
| 2026-05-15 | Susan D Lynch | Director | Sell | −16,711 | −$759.63K |
| 2026-05-15 | Derek D'Antilio | EVP, CFO & Treasurer | A | +59,877 | — |
| 2026-05-15 | Sharon Briansky | SVP, GC and Secretary | A | +18,463 | — |
| 2026-05-15 | Richard Madormo | SVP, Worldwide Sales | A | +19,815 | — |
| 2026-05-15 | Ian Kent | SVP, Global Operations | A | +8,492 | — |
| 2026-05-15 | Robert Willett | Director | A | +1,094 | — |
| 2026-05-13 | Michael Doogue | President and CEO | Sell | −30,089 | −$1.42M |
| 2026-05-13 | Sharon Briansky | SVP, GC and Secretary | Sell | −8,948 | −$425.38K |
| 2026-03-25 | Richard Madormo | SVP, Worldwide Sales | D | −6,498 | −$211.70K |
| 2026-03-04 | Ian Kent | SVP, Global Operations | A | +9,183 | — |
| 2026-03-03 | Erin Hagen | SVP, CHRO | MIXED | −4,594 | −$163.72K |
| 2026-03-03 | Derek D'Antilio | EVP, CFO & Treasurer | F | −9,995 | −$364.52K |
| 2026-03-03 | Sharon Briansky | SVP, GC and Secretary | MIXED | −18,834 | −$672.58K |
| 2026-02-18 | Derek D'Antilio | EVP, CFO & Treasurer | F | −17,808 | −$754.70K |
| 2026-02-18 | Sharon Briansky | SVP, GC and Secretary | MIXED | −18,249 | −$765.80K |
| 2025-12-12 | Sharon Briansky | SVP, GC and Secretary | Sell | −27,873 | −$836.19K |
| 2025-11-12 | Troy Coleman | SVP, General Manager, Products | A | +73,530 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Michael Doogue | President and CEO | 531,873 | $16.86M |
| Vineet A Nargolwala | President and CEO | 356,113 | $11.29M |
| Max R. Glover | SVP of Worldwide Sales | 266,339 | $8.44M |
| Derek D'Antilio | EVP, CFO & Treasurer | 238,813 | $7.57M |
| Yoshihiro Suzuki | Director | 217,811 | $6.90M |
| Sharon Briansky | SVP, GC and Secretary | 79,753 | $2.53M |
| Troy Coleman | SVP, General Manager, Products | 77,476 | $2.46M |
| Richard Madormo | SVP, Worldwide Sales | 69,687 | $2.21M |
| Joseph R Martin | Director | 39,430 | $1.25M |
| Erin Hagen | SVP, CHRO | 31,052 | $984.04K |
| Ian Kent | SVP, Global Operations | 25,392 | $804.67K |
| Mary G Puma | Director | 21,734 | $688.75K |
| Richard R. Lury | Director | 18,857 | $597.58K |
| Krishna G. Palepu | Director | 14,762 | $467.81K |
| Jennie Raubacher | Director | 13,976 | $442.90K |
| Roald Graham Webster | VP, Chief Accounting Officer | 13,106 | $415.33K |
| Susan D Lynch | Director | 12,805 | $405.79K |
| Robert Willett | Director | 1,094 | $34.67K |
| Brian C White | Director | 594 | $18.82K |
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.
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.