WS
Insider
William P Scully
10% ownerWilliam P Scully (10% owner) filed 9 Form 4 reports in the trailing twelve months (9 purchases, 0 sales), most often in Prothena Corporation plc (PRTA). Across 7 priced purchase filings, the average 21-session return was +4.5% from execution and +1.8% from disclosure (delay-adjusted; derived). The largest single filing was $1.0M of PRTA (125,000 sh × $8.17, as filed), executed Jun 11.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
+4.5%
avg across 7 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+1.8%
same 7 filings, from disclosure
Filings, ttm
9
9 buys · 0 sells
Median delay
1d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$4.9M
shares × price, as filed
Last traded
Sep 18
Filed yesterday
Median ADV $4.9M across their filed names
Impact on $10,000 · 12M
$8,485 (-15.1%)
S&P 500 $11,725 (+17.2%) · 32.4 pts behind
William P Scully
S&P 500
Compounded across filings from disclosure dates · past 12 months
Open performance→Volume by month
Buys $7.6M
Sells $0
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Healthcare
9 filings
Sector per market data · by filing · past 12 months
Most traded names
PRTARecent filings
PRTAPURCHASE
Prothena Corporation plc
View filing →
$981K100,000 sh × $9.81
Exec May 22
Filed May 26 · 2:51 PM ET PRTAPURCHASE Prothena Corporation plc View filing → $2.7M
203,436 sh across 3 lots
Exec Dec 18 2024
Filed May 2 2025 · 5:30 PM ET †