13F Pro

SEC Form 4 reporting owner

Read Simon

Read Simon has filed 9 Form 4 transactions reported between May 21, 2026 and August 19, 2026, as a reporting owner of Dianthus Therapeutics, Inc. /DE/.

Name as filed: Read Simon

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$304K
6 lines
Companies
1
with Form 4 filings
Latest transaction
Aug 19, 2026
transaction date

Roles and reported holdings

  • DNTHDianthus Therapeutics, Inc. /DE/
    May 21, 2026 – Aug 19, 2026

    Reporting owner

    Held directly0 sh as of Aug 10, 2026 · Form 4

    24 months: $304K sold

Transaction history

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

DateCompanyTypeSharesValueFiling
Aug 19, 2026DNTHOption exerciseCode M · direct2,778$51K@ $18.36Form 4
Aug 10, 2026DNTHOpen-market saleCode S · direct397$44K@ $111.77Form 4
Aug 10, 2026DNTHOpen-market saleCode S · direct470$52K@ $111.05Form 4
Aug 10, 2026DNTHOpen-market saleCode S · direct272$30K@ $109.96Form 4
Aug 10, 2026DNTHOpen-market saleCode S · direct831$91K@ $108.95Form 4
Aug 10, 2026DNTHOpen-market saleCode S · direct737$80K@ $108.17Form 4
Aug 10, 2026DNTHOpen-market saleCode S · direct70$7K@ $107.11Form 4
Aug 10, 2026DNTHOption exerciseCode M · direct2,777$51K@ $18.36Form 4
May 21, 2026DNTHGrant or awardCode A · direct6,090—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.