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US INSIDER PROFILE · NON-SCORING RESEARCH
SCULLY WILLIAM P
10% Owner
Identity: SEC owner CIK matched through an unambiguous cached owner-name crosswalk · Reporting-owner CIK: 0001045463
Purchase history
- Companies traded
- 1
- Purchases · 12M
- 14
- Purchases · 24M
- 15
- Average purchase
- $906.9K
- Median purchase
- $857.2K
- Gross purchase value
- $13.6M
Companies: PROTHENA CORP PUBLIC LTD CO
15 SEC accession(s) · 0 joint-owner event(s). Values are reported Form 4 transaction values in USD.
Qualifying purchase disclosures
| Published | Company | Ticker | Role | Reported value | SEC source |
|---|---|---|---|---|---|
| 2026-10-15 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $920.0K | Open filing |
| 2026-10-09 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $1.8M | Open filing |
| 2026-10-06 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $857.2K | Open filing |
| 2026-09-30 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $1.4M | Open filing |
| 2026-09-29 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $890.1K | Open filing |
| 2026-09-21 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $843.0K | Open filing |
| 2026-09-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $255.7K | Open filing |
| 2026-08-21 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $439.5K | Open filing |
| 2026-08-10 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $323.2K | Open filing |
| 2026-06-18 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $158.0K | Open filing |
| 2026-06-12 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $1.0M | Open filing |
| 2026-06-05 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $465.5K | Open filing |
| 2026-06-03 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $471.5K | Open filing |
| 2026-05-26 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $981.0K | Open filing |
| 2025-05-02 | PROTHENA CORP PUBLIC LTD CO | PRTA | 10% Owner | $2.8M | Open filing |
Post-purchase outcomes
Excess return = stock return − S&P 500 ETF (SPY adjusted close) return. Returns start on the first shared trading session on or after publication.
No completed point-in-time price outcome is available yet.
Research patterns
- First purchase in 12M
- 1/14
- Large purchase ≥ $100k
- 15/15
- Cluster buying · 15D
- 0/15
- Buying the dip
- 0/—
Routine / opportunistic: Not classifiable. These labels never affect the score or ranking.
Small samples remain visible but are not scored. This research enrichment never affects US-v1.1.