🕵️ Allegro Microsystems, Inc. ($ALGM)
SEC insider & ownership activity, last 12 months · CIK 866291 · every row links its SEC filing
Over the last 12 months insiders sold $5.2M with no open-market buying against it. Briansky Sharon sold $2.0M (Dec–May). Capital Research Global Investors trimmed 8.6% → 7.1%. No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 9 sellers, $5.2M (13 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Briansky Sharon | 0 | – | 4 | $2.0M | May 11, 2026 |
| Doogue Michael | 0 | – | 1 | $1.4M | May 11, 2026 |
| Susan D. Lynch | 0 | – | 1 | $760K | May 14, 2026 |
| Madormo Richard | 0 | – | 1 | $264K | Jun 3, 2026 |
| Webster Roald Graham | 0 | – | 1 | $234K | May 21, 2026 |
| Coleman Troy | 0 | – | 1 | $206K | May 22, 2026 |
| Hagen Erin | 0 | – | 2 | $192K | Aug 10, 2026 |
| Kent Ian | 0 | – | 1 | $110K | May 18, 2026 |
| Raubacher Jennie | 0 | – | 1 | $45K | Aug 17, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| FMR LLC | 13.7% | 13G | Aug 6, 2026 | filing ↗ | |
| Abigail P. Johnson | 13.7% | 13G | Aug 6, 2026 | filing ↗ | |
| Invesco Ltd. | 7.3% | 13G | Aug 13, 2026 | filing ↗ | |
| Capital Research Global Investors | 7.1% | 13G | Feb 12, 2026 | filing ↗ | |
| BlackRock, Inc. | 6.9% | 13G | Jul 27, 2026 | filing ↗ | |
| JPMorgan Chase & Co | 6.8% | 13G | Jul 16, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Raubacher Jennie | $45K | Aug 17, 2026 | filing ↗ |
| Hagen Erin | $101K | Aug 10, 2026 | filing ↗ |
| Madormo Richard | $264K | Jun 3, 2026 | filing ↗ |
| Coleman Troy | $206K | May 22, 2026 | filing ↗ |
| Kent Ian | $110K | May 18, 2026 | filing ↗ |
| Susan D. Lynch | $760K | May 14, 2026 | filing ↗ |
| Doogue Michael | $1.4M | May 11, 2026 | filing ↗ |
| Briansky Sharon | $425K | May 11, 2026 | filing ↗ |
| Briansky Sharon | $340K | Mar 2, 2026 | filing ↗ |
| Hagen Erin | $91K | Mar 2, 2026 | filing ↗ |
| Briansky Sharon | $385K | Feb 17, 2026 | filing ↗ |
| Briansky Sharon | $836K | Dec 10, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Shareholder vote (5.07) | Aug 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2026 | filing ↗ |
| Earnings (2.02) | Jul 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 30, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 17, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 17, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 11, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Earnings (2.02) | Jan 29, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 29, 2026 | filing ↗ |
| Material agreement (1.01) | Jan 21, 2026 | filing ↗ |
| New financial obligation (2.03) | Jan 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 21, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 15, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 15, 2026 | filing ↗ |
| Earnings (2.02) | Oct 30, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 30, 2025 | filing ↗ |