SEC Form 4 reporting owner

Kupinsky Stuart

Kupinsky Stuart has filed 7 Form 4 transactions reported between February 17, 2026 and September 21, 2026, as EVP, CLO & Corp Sec of MERCURY SYSTEMS INC.

Name as filed: KUPINSKY STUART

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$767K
6 lines
Companies
1
with Form 4 filings
Latest transaction
Sep 21, 2026
transaction date

Roles and reported holdings

  • MRCYMERCURY SYSTEMS INC
    Feb 17, 2026 – Sep 21, 2026

    EVP, CLO & Corp Sec

    Held directly60,971 sh as of Sep 21, 2026 · Form 4

    24 months: $767K sold

Transaction history

All 7 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 21, 2026MRCYEVP, CLO & Corp SecOpen-market saleCode S · direct1,000$87K@ $86.52Form 4
Aug 21, 2026MRCYEVP, CLO & Corp SecOpen-market saleCode S · direct1,000$95K@ $95.23Form 4
Aug 19, 2026MRCYEVP, CLO & Corp SecOpen-market saleCode S · direct1,308$131K@ $100.31Form 4
Aug 18, 2026MRCYEVP, CLO & Corp SecOpen-market saleCode S · direct1,178$131K@ $111.36Form 4
Aug 17, 2026MRCYEVP, CLO & Corp SecOpen-market saleCode S · direct1,195$131K@ $109.95Form 4
Aug 14, 2026MRCYEVP, CLO & Corp SecDisposition to issuerCode D · direct6,977—Form 4
Feb 17, 2026MRCYEVP, CLO & Corp SecOpen-market saleCode S · direct2,287$191K@ $83.56Form 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.