Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies William P. Scully files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Michael John Isaacs - $71K of PRTA open-market activity in the last 12 months
- Anne Evans Kingston - $65K of PRTA open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is William P. Scully?
William P. Scully is a corporate insider, tracked as 10% Owner of PROTHENA CORP PUBLIC LTD CO (PRTA). InsiderAlpha holds 11 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has William P. Scully submitted recently?
9 primary Form 4 filings in the last 90 days, covering 1 company.
Has William P. Scully been buying or selling stock?
Recorded transactions: 14 open-market purchases ($6.61M) and 0 open-market sales across all tracked filings.
How accurate is William P. Scully's historical track record?
Across 7 tracked purchases, William P. Scully averaged +4.2% avg 30-day return with a 71% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of William P. Scully's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Follow William P. Scully and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial
