13F Pro

SEC Form 4 reporting owner

Ruddy Marcella K.

Ruddy Marcella K. has filed 9 Form 4 transactions reported between February 4, 2026 and September 3, 2026, as Chief Medical Officer of Tectonic Therapeutic, Inc., Director of Sionna Therapeutics, Inc. and a reporting owner of Upstream Bio, Inc..

Name as filed: Ruddy Marcella K.

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$363K
3 lines
Companies
3
with Form 4 filings
Latest transaction
Sep 3, 2026
transaction date

Roles and reported holdings

  • TECXTectonic Therapeutic, Inc.
    Feb 4, 2026 – Sep 3, 2026

    Chief Medical Officer

    Held directly67,682 sh as of May 4, 2026 · Form 4

    24 months: $363K sold

  • SIONSionna Therapeutics, Inc.
    Jun 17, 2026

    Director

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

  • UPBUpstream Bio, Inc.
    Jun 9, 2026

    Reporting owner

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

Transaction history

All 9 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 3, 2026TECXChief Medical OfficerGrant or awardCode A · direct24,250—Form 4
Jun 17, 2026SIONDirectorGrant or awardCode A · direct17,340—Form 4
Jun 9, 2026UPBGrant or awardCode A · direct17,096—Form 4
May 4, 2026TECXChief Medical OfficerOpen-market saleCode S · direct1,065$32K@ $30.00Form 4
Apr 1, 2026TECXChief Medical OfficerOpen-market saleCode S · direct1,000$31K@ $31.05Form 4
Mar 6, 2026TECXChief Medical OfficerOpen-market saleCode S · direct10,000$300K@ $30.00Form 4
Mar 4, 2026TECXChief Medical OfficerGrant or awardCode A · direct24,250—Form 4
Mar 4, 2026TECXChief Medical OfficerGrant or awardCode A · direct26,500—Form 4
Feb 4, 2026TECXChief Medical OfficerShares withheld for tax or exercise priceCode F · direct2,064$48K@ $23.22Form 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.