William P. Scully

Insider Reports History

Reporting-owner location: New York, NY
Latest reporting-owner signature: Reid E. Buchanan by POA from William P. Scully
Transaction source note: Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for William P. Scully

Form 4 holding 10%+ Owner

PROTHENA CORP PUBLIC LTD CO

Security class: Ordinary Shares, par value $0.01 per share
Shares / value: 936,000
Estimated value: $8,710,322
Report date: 04 Jun 2026
Price: $9.31
Ownership: Direct

Form 4 holding 10%+ Owner

PROTHENA CORP PUBLIC LTD CO

Security class: Ordinary Shares, par value $0.01 per share
Shares / value: 80,000
Estimated value: $777,600
Report date: 04 Jun 2026
Price: $9.72
Ownership: By Manatee Equity Fund LLC

Form 4 holding 10%+ Owner

PROTHENA CORP PUBLIC LTD CO

Security class: Ordinary Shares, par value $0.01 per share
Shares / value: 68,000
Estimated value: $694,960
Report date: 18 Dec 2024
Price: $10.22
Ownership: By Self as Trustee for The 2012 Randolph Scully Family Trust

Form 4 holding 10%+ Owner

PROTHENA CORP PUBLIC LTD CO

Security class: Ordinary Shares, par value $0.01 per share
Shares / value: 52,000
Estimated value: $505,440
Report date: 04 Jun 2026
Price: $9.72
Ownership: By Spouse

Insider Reports Filed by William P. Scully

4 PRTA

PROTHENA CORP PUBLIC LTD CO

Report period: 04 Jun 2026
Transactions: 1
Transaction value: +$465,295
Accepted by SEC: 05 Jun 2026, 13:46
Role: 10%+ Owner
Next action: Open filing details

4 PRTA

PROTHENA CORP PUBLIC LTD CO

Report period: 02 Jun 2026
Transactions: 1
Transaction value: +$471,300
Accepted by SEC: 03 Jun 2026, 12:41
Role: 10%+ Owner
Next action: Open filing details

4 PRTA

PROTHENA CORP PUBLIC LTD CO

Report period: 22 May 2026
Transactions: 1
Transaction value: +$981,300
Accepted by SEC: 26 May 2026, 14:51
Role: 10%+ Owner
Next action: Open filing details

3 PRTA

PROTHENA CORP PUBLIC LTD CO

Report period: 07 May 2026
Transactions: 0
Transaction value: $0
Accepted by SEC: 14 May 2026, 18:22
Role: 10%+ Owner
Next action: Open filing details

4 PRTA

PROTHENA CORP PUBLIC LTD CO

Report period: 18 Dec 2024
Transactions: 13
Transaction value: +$2,749,916
Accepted by SEC: 02 May 2025, 10:29
Role: 10%+ Owner
Next action: Open filing details

3 PRTA

PROTHENA CORP PUBLIC LTD CO

Report period: 17 Dec 2024
Transactions: 0
Transaction value: $0
Accepted by SEC: 01 May 2025, 21:19
Role: 10%+ Owner
Next action: Open filing details

We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. to update or revoke optional consent for future visits. For more information, see our Privacy Policy .