SEC Form 4 reporting owner

White Brian C

White Brian C has filed 6 Form 4 transactions reported between February 9, 2026 and August 5, 2026, as a reporting owner of ALLEGRO MICROSYSTEMS, INC. and Director of FORMFACTOR INC.

Name as filed: WHITE BRIAN C

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$1.1M
3 lines
Companies
2
with Form 4 filings
Latest transaction
Aug 5, 2026
transaction date

Roles and reported holdings

  • ALGMALLEGRO MICROSYSTEMS, INC.
    Jun 17, 2026 – Aug 5, 2026

    Reporting owner

    No common-stock holding reported on a purchase, sale, gift or withholding line.

  • FORMFORMFACTOR INC
    Feb 9, 2026 – May 20, 2026

    Director

    Held directly8,653 sh as of May 20, 2026 · Form 4

    24 months: $1.1M sold

Transaction history

All 6 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Aug 5, 2026ALGMGrant or awardCode A · direct4,251—Form 4
Jun 17, 2026ALGMGrant or awardCode A · direct594—Form 4
May 20, 2026FORMDirectorOpen-market saleCode S · direct3,250$410K@ $126.00Form 4
May 15, 2026FORMDirectorGrant or awardCode A · direct1,347—Form 4
Feb 24, 2026FORMDirectorOpen-market saleCode S · direct2,300$230K@ $100.01Form 4
Feb 9, 2026FORMDirectorOpen-market saleCode S · direct5,500$500K@ $90.95Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.