Allegro MicroSystems (ALGM) — insider trading
Information Technology · NASDAQ
Allegro MicroSystems (ALGM) has 39 reported SEC Form 4 insider transactions in our data, including 9 open-market sales among the most recent 39 (latest 2026-09-30).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-30 | Willett Robert | Director | Grant / award / vesting (derivative) | 619 | — | $0 | Form 4 |
| 2026-08-17 | Raubacher Jennie | Director | Open-market sale | 1,000 | $45.32 | $45.3K | Form 4 |
| 2026-08-10 | Hagen Erin | Officer (SVP, CHRO) | Open-market sale | 2,285 | $44.39 | $101.4K | Form 4 |
| 2026-08-05 | WHITE BRIAN C | Director | Grant / award / vesting (derivative) | 4,251 | — | $0 | Form 4 |
| 2026-08-05 | Willett Robert | Director | Grant / award / vesting (derivative) | 4,251 | — | $0 | Form 4 |
| 2026-08-05 | Raubacher Jennie | Director | Grant / award / vesting (derivative) | 4,251 | — | $0 | Form 4 |
| 2026-08-05 | Palepu Krishna G. | Director | Grant / award / vesting | 4,251 | — | $0 | Form 4 |
| 2026-08-05 | PUMA MARY G | Director | Grant / award / vesting | 4,251 | — | $0 | Form 4 |
| 2026-08-05 | MARTIN JOSEPH R | Director | Grant / award / vesting | 4,251 | — | $0 | Form 4 |
| 2026-08-05 | Suzuki Yoshihiro | Director | Grant / award / vesting | 4,251 | — | $0 | Form 4 |
| 2026-06-17 | WHITE BRIAN C | Director | Grant / award / vesting | 594 | — | $0 | Form 4 |
| 2026-06-03 | Madormo Richard | Officer (SVP, Worldwide Sales) | Open-market sale | 5,000 | $52.72 | $263.6K | Form 4 |
| 2026-05-22 | Coleman Troy | Officer (SVP, General Manager, Products) | Open-market sale | 4,500 | $45.72 | $205.7K | Form 4 |
| 2026-05-21 | Webster Roald Graham | Officer (VP, Chief Accounting Officer) | Open-market sale | 5,217 | $44.89 | $234.2K | Form 4 |
| 2026-05-18 | Kent Ian | Officer (SVP, Global Operations) | Open-market sale | 2,642 | $41.56 | $109.8K | Form 4 |
| 2026-05-16 | Coleman Troy | Officer (SVP, General Manager, Products) | Shares withheld for taxes / exercise cost | 9,670 | $43.10 | $416.8K | Form 4 |
| 2026-05-16 | Briansky Sharon | Officer (SVP, GC and Secretary) | Shares withheld for taxes / exercise cost | 13,942 | $43.10 | $600.9K | Form 4 |
| 2026-05-16 | Doogue Michael | Director, Officer (President and CEO) | Shares withheld for taxes / exercise cost | 60,508 | $43.10 | $2.61M | Form 4 |
| 2026-05-16 | Webster Roald Graham | Officer (VP, Chief Accounting Officer) | Shares withheld for taxes / exercise cost | 4,277 | $43.10 | $184.3K | Form 4 |
| 2026-05-16 | Madormo Richard | Officer (SVP, Worldwide Sales) | Shares withheld for taxes / exercise cost | 5,439 | $43.10 | $234.4K | Form 4 |
| 2026-05-16 | D'Antilio Derek | Officer (EVP, CFO & Treasurer) | Shares withheld for taxes / exercise cost | 37,840 | $43.10 | $1.63M | Form 4 |
| 2026-05-16 | Kent Ian | Officer (SVP, Global Operations) | Shares withheld for taxes / exercise cost | 2,345 | $43.10 | $101.1K | Form 4 |
| 2026-05-16 | Hagen Erin | Officer (SVP, CHRO) | Shares withheld for taxes / exercise cost | 5,815 | $43.10 | $250.6K | Form 4 |
| 2026-05-14 | Lynch Susan D | Director | Open-market sale | 16,711 | $45.46 | $759.6K | Form 4 |
| 2026-05-13 | Webster Roald Graham | Officer (VP, Chief Accounting Officer) | Grant / award / vesting | 544 | — | $0 | Form 4 |
| 2026-05-13 | Webster Roald Graham | Officer (VP, Chief Accounting Officer) | Grant / award / vesting | 4,756 | — | $0 | Form 4 |
| 2026-05-13 | Hagen Erin | Officer (SVP, CHRO) | Grant / award / vesting | 9,058 | — | $0 | Form 4 |
| 2026-05-13 | Doogue Michael | Director, Officer (President and CEO) | Grant / award / vesting | 83,700 | — | $0 | Form 4 |
| 2026-05-13 | Doogue Michael | Director, Officer (President and CEO) | Grant / award / vesting | 77,135 | — | $0 | Form 4 |
| 2026-05-13 | Coleman Troy | Officer (SVP, General Manager, Products) | Grant / award / vesting | 18,116 | — | $0 | Form 4 |
| 2026-05-13 | D'Antilio Derek | Officer (EVP, CFO & Treasurer) | Grant / award / vesting | 30,438 | — | $0 | Form 4 |
| 2026-05-13 | D'Antilio Derek | Officer (EVP, CFO & Treasurer) | Grant / award / vesting | 29,439 | — | $0 | Form 4 |
| 2026-05-13 | Briansky Sharon | Officer (SVP, GC and Secretary) | Grant / award / vesting | 2,611 | — | $0 | Form 4 |
| 2026-05-13 | Briansky Sharon | Officer (SVP, GC and Secretary) | Grant / award / vesting | 15,852 | — | $0 | Form 4 |
| 2026-05-13 | Madormo Richard | Officer (SVP, Worldwide Sales) | Grant / award / vesting | 19,815 | — | $0 | Form 4 |
| 2026-05-13 | Kent Ian | Officer (SVP, Global Operations) | Grant / award / vesting | 8,492 | — | $0 | Form 4 |
| 2026-05-13 | Willett Robert | Director | Grant / award / vesting | 1,094 | — | $0 | Form 4 |
| 2026-05-11 | Doogue Michael | Director, Officer (President and CEO) | Open-market sale | 30,089 | $47.23 | $1.42M | Form 4 |
| 2026-05-11 | Briansky Sharon | Officer (SVP, GC and Secretary) | Open-market sale | 8,948 | $47.54 | $425.4K | Form 4 |
Ask the chat about ALGM's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: Allegro MicroSystems (ALGM).
Last updated 2026-09-30 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.