13F Pro

SEC Form 4 reporting owner

Gadicke Ansbert

Gadicke Ansbert has filed 10 Form 4 transactions reported between December 2, 2025 and January 12, 2026, as a reporting owner of Aktis Oncology, Inc. and a reporting owner of Werewolf Therapeutics, Inc..

Name as filed: GADICKE ANSBERT

Open-market buys, 24 mo
$20.0M
1 lines
Open-market sales, 24 mo
$183K
3 lines
Companies
2
with Form 4 filings
Latest transaction
Jan 12, 2026
transaction date

Roles and reported holdings

  • AKTSAktis Oncology, Inc.
    Jan 12, 2026

    Reporting owner

    Held indirectly (latest line)10,260,064 sh as of Jan 12, 2026 · Form 4

    24 months: $20.0M bought

  • HOWLWerewolf Therapeutics, Inc.
    Dec 2, 2025 – Dec 4, 2025

    Reporting owner

    Held indirectly (latest line)4,784,111 sh as of Dec 4, 2025 · Form 4

    24 months: $183K sold

Transaction history

All 10 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jan 12, 2026AKTSConversion of derivativeCode C · indirect6,000,000—Form 4
Jan 12, 2026AKTSConversion of derivativeCode C · indirect22,500,000—Form 4
Jan 12, 2026AKTSConversion of derivativeCode C · indirect5,000,000—Form 4
Jan 12, 2026AKTSOpen-market purchaseCode P · indirectAlso reported by MPM BIOVENTURES 2018, L.P.1,112,777$20.0M@ $18.00Form 4
Jan 12, 2026AKTSConversion of derivativeCode C · indirect1,577,119—Form 4
Jan 12, 2026AKTSConversion of derivativeCode C · indirect5,914,197—Form 4
Jan 12, 2026AKTSConversion of derivativeCode C · indirect1,314,262—Form 4
Dec 4, 2025HOWLOpen-market saleCode S · indirectAlso reported by MPM BioVentures 2014, L.P.83,230$81K@ $0.9700Form 4
Dec 3, 2025HOWLOpen-market saleCode S · indirectAlso reported by MPM BioVentures 2014, L.P.57,225$50K@ $0.8700Form 4
Dec 2, 2025HOWLOpen-market saleCode S · indirectAlso reported by MPM BioVentures 2014, L.P.59,277$53K@ $0.8900Form 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.