13F Pro

SEC Form 4 reporting owner

Tappin Matthew

Tappin Matthew has filed 14 Form 4 transactions reported between February 15, 2026 and July 2, 2026, as President, Software Products of STEM, INC..

Name as filed: Tappin Matthew

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$28K
6 lines
Companies
1
with Form 4 filings
Latest transaction
Jul 2, 2026
transaction date

Roles and reported holdings

  • STEMSTEM, INC.
    Feb 15, 2026 – Jul 2, 2026

    President, Software Products

    Held directly9,577 sh as of Jul 2, 2026 · Form 4

    24 months: $28K sold

Transaction history

All 14 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jul 2, 2026STEMPresident, Software ProductsOpen-market saleCode S · direct996$8K@ $7.85Form 4
Jun 30, 2026STEMPresident, Software ProductsOption exerciseCode M · direct2,750$21K@ $7.81Form 4
Jun 30, 2026STEMPresident, Software ProductsOption exerciseCode M · direct5,000$39K@ $7.81Form 4
Mar 11, 2026STEMPresident, Software ProductsOpen-market saleCode S · direct402$4K@ $10.83Form 4
Mar 10, 2026STEMPresident, Software ProductsOpen-market saleCode S · direct655$7K@ $11.12Form 4
Mar 7, 2026STEMPresident, Software ProductsOption exerciseCode M · direct1,458—Form 4
Mar 4, 2026STEMPresident, Software ProductsOpen-market saleCode S · direct185$2K@ $10.00Form 4
Mar 3, 2026STEMPresident, Software ProductsOpen-market saleCode S · direct300$3K@ $9.67Form 4
Mar 1, 2026STEMPresident, Software ProductsOption exerciseCode M · direct670—Form 4
Feb 26, 2026STEMPresident, Software ProductsGrant or awardCode A · direct17,200—Form 4
Feb 26, 2026STEMPresident, Software ProductsGrant or awardCode A · direct25,800—Form 4
Feb 20, 2026STEMPresident, Software ProductsOpen-market saleCode S · direct366$4K@ $11.40Form 4
Feb 19, 2026STEMPresident, Software ProductsShares withheld for tax or exercise priceCode F · direct522$6K@ $11.30Form 4
Feb 15, 2026STEMPresident, Software ProductsOption exerciseCode M · direct1,253—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.