13F Pro

SEC Form 4 reporting owner

Barton Russell

Barton Russell has filed 8 Form 4 transactions reported between January 5, 2026 and January 22, 2026, as Chief Operating Officer of Acumen Pharmaceuticals, Inc..

Name as filed: Barton Russell

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$30K
6 lines
Companies
1
with Form 4 filings
Latest transaction
Jan 22, 2026
transaction date

Roles and reported holdings

  • ABOSAcumen Pharmaceuticals, Inc.
    Jan 5, 2026 – Jan 22, 2026

    Chief Operating Officer

    Held directly205,092 sh as of Jan 22, 2026 · Form 4

    24 months: $30K sold

Transaction history

All 8 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jan 22, 2026ABOSChief Operating OfficerOpen-market saleCode S · direct462$850@ $1.84Form 4
Jan 21, 2026ABOSChief Operating OfficerOpen-market saleCode S · direct2,315$4K@ $1.81Form 4
Jan 16, 2026ABOSChief Operating OfficerGrant or awardCode A · direct126,900—Form 4
Jan 16, 2026ABOSChief Operating OfficerGrant or awardCode A · direct84,600—Form 4
Jan 8, 2026ABOSChief Operating OfficerOpen-market saleCode S · direct3,530$7K@ $1.86Form 4
Jan 7, 2026ABOSChief Operating OfficerOpen-market saleCode S · direct1,700$3K@ $1.99Form 4
Jan 6, 2026ABOSChief Operating OfficerOpen-market saleCode S · direct3,618$7K@ $1.97Form 4
Jan 5, 2026ABOSChief Operating OfficerOpen-market saleCode S · direct4,000$8K@ $1.96Form 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.