13F Pro

SEC Form 4 reporting owner

Mathers Edward T

Mathers Edward T has filed 13 Form 4 transactions reported between December 31, 2025 and August 7, 2026, as a reporting owner of OnKure Therapeutics, Inc., a reporting owner of MBX Biosciences, Inc., a reporting owner of Trevi Therapeutics, Inc., a reporting owner of RHYTHM PHARMACEUTICALS, INC., a reporting owner of Korro Bio, Inc. and a reporting owner of SpyGlass Pharma, Inc..

Name as filed: Mathers Edward T

Open-market buys, 24 mo
$5.0M
2 lines
Open-market sales, 24 mo
None
reported
Companies
6
with Form 4 filings
Latest transaction
Aug 7, 2026
transaction date

Roles and reported holdings

  • OKUROnKure Therapeutics, Inc.
    Dec 31, 2025 – Aug 7, 2026

    Reporting owner

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

  • MBXMBX Biosciences, Inc.
    Jun 4, 2026

    Reporting owner

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

  • TRVITrevi Therapeutics, Inc.
    Jun 3, 2026

    Reporting owner

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

  • RYTMRHYTHM PHARMACEUTICALS, INC.
    Mar 2, 2026 – Mar 12, 2026

    Reporting owner

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

  • KRROKorro Bio, Inc.
    Mar 10, 2026

    Reporting owner

    Held indirectly (latest line)242,945 sh as of Mar 10, 2026 · Form 4

    24 months: $5.0M bought

  • SGPSpyGlass Pharma, Inc.
    Feb 9, 2026

    Reporting owner

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

    1 line is priced far from SGP’s market price that day, so the filing may concern a different security. Left out of totals and holdings; see the filings.

Transaction history

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

DateCompanyTypeSharesValueFiling
Aug 7, 2026OKURGrant or awardCode A · direct22,350—Form 4
Jun 4, 2026OKURGrant or awardCode A · direct7,650—Form 4
Jun 4, 2026MBXGrant or awardCode A · direct12,500—Form 4
Jun 3, 2026TRVIGrant or awardCode A · direct35,000—Form 4
Mar 12, 2026RYTMOther acquisition or dispositionCode J · indirect4,199—Form 4
Mar 10, 2026KRROOpen-market purchaseCode P · indirectAlso reported by Yang Rick, SANDELL SCOTT D, New Enterprise Associates 17, L.P., Chang Carmen, BASKETT FOREST, Makhzoumi Mohamad, Walker Paul Edward, Florence Anthony A. Jr.242,945$2.7M@ $11.11Form 4
Mar 10, 2026KRROOpen-market purchaseCode P · indirectAlso reported by Yang Rick, SANDELL SCOTT D, New Enterprise Associates 17, L.P., Chang Carmen, BASKETT FOREST, Makhzoumi Mohamad, Walker Paul Edward, Florence Anthony A. Jr.207,100$2.3M@ $11.11Form 4
Mar 2, 2026RYTMOther acquisition or dispositionCode J · indirect4,198—Form 4
Feb 9, 2026SGPOpen-market purchaseCode P · indirectPrice far from market; may be another securityAlso reported by Walker Paul Edward, Behbahani Ali, Florence Anthony A. Jr., BASKETT FOREST, New Enterprise Associates 17, L.P., Yang Rick, Makhzoumi Mohamad, SANDELL SCOTT D, Chang Carmen937,500$15.0M@ $16.00Form 4
Feb 9, 2026SGPConversion of derivativeCode C · indirect737,962—Form 4
Feb 9, 2026SGPConversion of derivativeCode C · indirect1,370,168—Form 4
Feb 9, 2026SGPConversion of derivativeCode C · indirect1,619,240—Form 4
Dec 31, 2025OKURGrant or awardCode A · direct3,911—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.

1 open-market line is priced outside 0.67×–1.5× of the stock’s closing price that day. A gap that large usually means the filing reports a different security than the company it is filed under, so those lines are shown but left out of totals and holdings.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.