13F Pro

SEC Form 4 reporting owner

Martin Heather

Martin Heather has filed 4 Form 4 transactions reported between May 20, 2026 and September 10, 2026, as Chief Marketing Officer of Anterix Inc..

Name as filed: Martin Heather

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$679K
1 lines
Companies
1
with Form 4 filings
Latest transaction
Sep 10, 2026
transaction date

Roles and reported holdings

  • ATEXAnterix Inc.
    May 20, 2026 – Sep 10, 2026

    Chief Marketing Officer

    Held directly26,743 sh as of Sep 10, 2026 · Form 4

    24 months: $679K sold

Transaction history

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

DateCompanyTypeSharesValueFiling
Sep 10, 2026ATEXChief Marketing OfficerOpen-market saleCode S · direct8,064$679K@ $84.20Form 4
Sep 9, 2026ATEXChief Marketing OfficerShares withheld for tax or exercise priceCode F · direct3,465$296K@ $85.44Form 4
May 20, 2026ATEXChief Marketing OfficerGrant or awardCode A · direct17,453—Form 4
May 20, 2026ATEXChief Marketing OfficerGrant or awardCode A · direct3,694—Form 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.