Allegro MicroSystems (ALGM)Officer sold ~$101K

~$101K

Approx. value · 2,285 sh @ $44.39

31K

Holds after · shares reported

Traded

Aug 10, 2026

Filed

Aug 12, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Jun 17, 2026Company filing · Form 8-K · Executive change, Reg FDChanged a top executive or board member, and shared information with investors“On June 17, 2026, at the recommendation of the Nominating and Governance Committee (“NGC”) of the Board of Directors (the “Board”) of Allegro MicroSystems, Inc. (the “Company”) and in accordance with the Second Amended and Restated Stockholders Agreement, dated as of July 23, 2024, by and among the Company and Sanken Electric Co., Ltd. (the “Stockholders Agreement”), the Board took the following actions, each of…”
2. Jul 30, 2026Company filing · Form 8-K · ResultsReported its results
3. Aug 10, 2026 · this disclosureInsiderOfficer sold ~$101K of ALGM shares in the open market

What came next

1. Aug 17, 2026InsiderDirector sold ~$45K of ALGM shares in the open market
2. Oct 7, 20265% stakeFMR LLC reported a passive stake (13G) of 5.3%

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Allegro MicroSystems

For Allegro MicroSystems, OQRO holds 2 insider filings (SEC Form 4 or Form 144) and 4 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its ALGM page.

Other recent filings by Erin Hagen, SVP, CHRO

• SEC Form 4 at Allegro MicroSystems (ALGM)Mar 3, 2026
• SEC Form 4 at Allegro MicroSystems (ALGM)Aug 5, 2025

The full history of Erin Hagen, SVP, CHRO is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Allegro MicroSystems

• SEC Form 4Aug 18, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 12, 2026
• SEC Form 4Jun 4, 2026

Everything OQRO holds on this company is on its ALGM page.