SEC Form 4 reporting owner

Scully William P

Scully William P has filed 14 Form 4 transactions reported between May 22, 2026 and September 18, 2026, as 10% owner of PROTHENA CORP PUBLIC LTD CO.

Name as filed: SCULLY WILLIAM P

Open-market buys, 24 mo
$5.0M
10 lines
Open-market sales, 24 mo
None
reported
Companies
1
with Form 4 filings
Latest transaction
Sep 18, 2026
transaction date

Roles and reported holdings

  • PRTAPROTHENA CORP PUBLIC LTD CO
    May 22, 2026 – Sep 18, 2026

    10% owner

    Held directly927,000 sh as of Sep 18, 2026 · Form 4
    Held indirectly (latest line)83,500 sh as of Aug 7, 2026 · Form 4

    24 months: $5.0M bought

Transaction history

All 14 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 18, 2026PRTA10% ownerOpen-market purchaseCode P · direct100,000$843K@ $8.43Form 4
Sep 2, 2026PRTA10% ownerOpen-market purchaseCode P · direct27,000$256K@ $9.47Form 4
Aug 20, 2026PRTA10% ownerOpen-market purchaseCode P · direct50,000$439K@ $8.79Form 4
Aug 18, 2026PRTA10% ownerGiftCode G · direct627,553—Form 4
Aug 17, 2026PRTA10% ownerGiftCode G · direct336,000—Form 4
Aug 10, 2026PRTA10% ownerGiftCode G · direct251,553—Form 4
Aug 7, 2026PRTA10% ownerOpen-market purchaseCode P · indirect3,500$30K@ $8.62Form 4
Aug 7, 2026PRTA10% ownerOpen-market purchaseCode P · direct34,000$293K@ $8.62Form 4
Jun 16, 2026PRTA10% ownerOpen-market purchaseCode P · direct20,000$158K@ $7.90Form 4
Jun 15, 2026PRTA10% ownerGiftCode G · direct325,000—Form 4
Jun 11, 2026PRTA10% ownerOpen-market purchaseCode P · direct125,000$1.0M@ $8.17Form 4
Jun 4, 2026PRTA10% ownerOpen-market purchaseCode P · direct50,000$465K@ $9.31Form 4
Jun 2, 2026PRTA10% ownerOpen-market purchaseCode P · direct50,000$471K@ $9.43Form 4
May 22, 2026PRTA10% ownerOpen-market purchaseCode P · direct100,000$981K@ $9.81Form 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.