13F Pro

SEC Form 4 reporting owner

Cumbo Alexander

Cumbo Alexander has filed 13 Form 4 transactions reported between December 2, 2025 and September 23, 2026, as a reporting owner of Stoke Therapeutics, Inc., a reporting owner of Vor Biopharma Inc., a reporting owner of Climb Bio, Inc. and President and CEO of Solid Biosciences Inc..

Name as filed: Cumbo Alexander

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$984K
4 lines
Companies
4
with Form 4 filings
Latest transaction
Sep 23, 2026
transaction date

Roles and reported holdings

  • STOKStoke Therapeutics, Inc.
    Sep 23, 2026

    Reporting owner

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

  • VORVor Biopharma Inc.
    Jun 11, 2026

    Reporting owner

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

  • CLYMClimb Bio, Inc.
    Jun 5, 2026

    Reporting owner

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

  • SLDBSolid Biosciences Inc.
    Dec 2, 2025 – Feb 18, 2026

    President and CEO

    Held directly235,405 sh as of Feb 18, 2026 · Form 4

    24 months: $984K sold

Transaction history

All 13 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 23, 2026STOKGrant or awardCode A · direct39,674—Form 4
Jun 11, 2026VORGrant or awardCode A · direct56,345—Form 4
Jun 5, 2026CLYMGrant or awardCode A · direct40,000—Form 4
Feb 18, 2026SLDBPresident and CEOOpen-market saleCode S · direct16,644$97K@ $5.82Form 4
Feb 13, 2026SLDBPresident and CEOOption exerciseCode M · direct30,031—Form 4
Feb 4, 2026SLDBPresident and CEOOpen-market saleCode S · direct48,913$315K@ $6.44Form 4
Feb 2, 2026SLDBPresident and CEOOpen-market saleCode S · direct80,258$517K@ $6.44Form 4
Jan 31, 2026SLDBPresident and CEOOption exerciseCode M · direct100,400—Form 4
Jan 29, 2026SLDBPresident and CEOGrant or awardCode A · direct254,900—Form 4
Jan 29, 2026SLDBPresident and CEOGrant or awardCode A · direct509,850—Form 4
Jan 29, 2026SLDBPresident and CEOOption exerciseCode M · direct169,401—Form 4
Dec 3, 2025SLDBPresident and CEOOpen-market saleCode S · direct10,808$55K@ $5.11Form 4
Dec 2, 2025SLDBPresident and CEOOption exerciseCode M · direct28,612—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.