SEC Form 4 · accession 0001045463-26-000015
PROTHENA CORP PUBLIC LTD CO · PRTA
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
William P Scully
10% Owner
Period of report
Sep 2, 2026
Accepted (ET)
Sep 3, 2026 · 6:23 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001559053
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Ordinary Shares, par value $0.01 per shareF1 | Sep 2, 2026 | P | 27,000 | $9.4718 | A | 827,000 | D | |
| Ordinary Shares, par value $0.01 per shareF2 | holding | — | — | — | 83,500 | I | By Manatee Equity Fund LLC | |
| Ordinary Shares, par value $0.01 per share | holding | — | — | — | 52,000 | I | By Spouse |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $9.4072 to $9.6100, inclusive. The reporting person undertakes to provide to Prothena Corp Public Ltd Co, any security holder of Prothena Corp Public Ltd Co, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.
- F2The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.