SCULLY WILLIAM P
SEC Form 4 insider trading activity
SCULLY WILLIAM P has filed 17 SEC Form 4 filings (21 transaction rows) across 1 company, with disclosures dating back to 2026. 17 of those filings fall inside the rolling window. Most recent filing: Oct 15, 2026.
On the most recent filing, SCULLY WILLIAM P is listed as 10% Owner at PROTHENA CORP PUBLIC LTD CO. Inside the rolling window, SCULLY WILLIAM P reported 16 open-market purchases totaling $10.9M in PRTA and no open-market sales. The largest disclosed transaction in the window is a purchase of 162,000 PRTA shares on Sep 29, 2026, worth $1.4M.
Companies traded
Other insiders at PRTA
Insider Buying
$10.9M
reported purchases (SEC code P)
Insider Selling
$0
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| PRTA | 10% Owner | Purchase | 100,000 | $835K | Oct 15 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 10,000 | $85K | Oct 15 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 125,000 | $1.1M | Oct 9 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 90,000 | $771K | Oct 9 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 100,000 | $857K | Oct 6 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 162,000 | $1.4M | Sep 30 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 103,500 | $890K | Sep 29 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 100,000 | $843K | Sep 21 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 27,000 | $256K | Sep 3 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 50,000 | $439K | Aug 21 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 37,500 | $323K | Aug 10 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 20,000 | $158K | Jun 18 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 125,000 | $1.0M | Jun 12 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 50,000 | $465K | Jun 5 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 50,000 | $471K | Jun 3 | SEC ↗ | |
| PRTA | 10% Owner | Purchase | 100,000 | $981K | May 26 | SEC ↗ |
Frequently asked questions
How many SEC Form 4 filings has SCULLY WILLIAM P made?
SCULLY WILLIAM P has filed 17 SEC Form 4 filings (21 transaction rows) across 1 company since 2026.
Which companies does SCULLY WILLIAM P trade?
SCULLY WILLIAM P has filed SEC Form 4 disclosures for 1 company, including PRTA.
When was SCULLY WILLIAM P's most recent SEC Form 4 filing?
SCULLY WILLIAM P's most recent SEC Form 4 filing on Tracefour is dated Oct 15, 2026.
What is SCULLY WILLIAM P's total buy and sell value in the current window?
Inside the rolling retention window, SCULLY WILLIAM P bought $10.9M and sold $0 based on SEC Form 4 filings.
What was SCULLY WILLIAM P's largest disclosed transaction?
The largest disclosed transaction in the current window is a purchase of 162,000 PRTA shares on 2026-09-29, worth $1.4M, per SEC Form 4 filings.