Form 4 Filing: SCULLY WILLIAM P Buys shares of $PRTA

INSIDER PURCHASE

⚡ MATERIALITY: 7/10

corporate issuer

PROTHENA CORP PUBLIC LTD CO

Ticker: $PRTA

Transaction Value

Not verified

Price/Share: not verified: price far from other filings for this stock

transaction date

2026-11-09

Shares: 1,056,444

Market Price Activity

HillSignal AI Analytical Report

SEC Form 4 documents direct changes in beneficial ownership of securities for public corporations. The reporting insider, SCULLY WILLIAM P, holds the title of 10% Owner at PROTHENA CORP PUBLIC LTD CO.

On 2026-11-09, the insider transacted 1,056,444 shares.The price in this filing could not be confirmed (price far from other filings for this stock), so no dollar value is shown. The SEC filing has the figures as filed.

Executive Summary Summary

SCULLY WILLIAM P (10% Owner) bought shares of $PRTA (value not verified)

Post-Transaction Position: 977,000 shares

SEC Accession No: 0001045463-26-000024 (CIK: 1045463)

Verified Multi-Source Index

Verify the accuracy of this insider transaction and corporate entity independently. HillSignal pulls data directly from official SEC databases; use the sources below to corroborate.

SEC EDGAR FilingView Source Form 4

Yahoo Finance$PRTA Quote & Profile

OpenCorporates RegistryVerify Corporate Identity

Google News$PRTA News Coverage