SCULLY WILLIAM P purchased 46.7% of their position (100K shares) of PROTHENA CORP PUBLIC LTD CO on the open market
Open‑market purchase worth $857.2K — a major conviction buy. The strongest form of insider conviction signal.
P · 1 purchase
Filed: 10/6/2026ACC: 0001045463-26-000019
10% Owner
Since Dec 2024
+100K
Net shares
Net buyer
$857.2K
Total acquired
1
Open market trades
1B · 0S
1
Total transactions
100K acquired
Non-Derivative Transactions1
Ordinary Shares, par value $0.01 per share
Indirect
Shares
+100K
Price / share
$8.57
Trade value
$857.24K
% of position
46.7%
10/2/2026
214K→314K
Total
Net shares
+100K
Net value
$857.24K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Ordinary Shares, par value $0.01 per share Indirect | 10/2/2026 | P · Purchase | +100K | $8.57 | $857.24K | 46.7% | 214K | 314K |
| Total | +100K | $857.24K | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)2
Ordinary Shares, par value $0.01 per share
DirectShares owned927K
Ordinary Shares, par value $0.01 per share
IndirectShares owned187K
Total
927K direct·187K indirect1.11M
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Ordinary Shares, par value $0.01 per share | 927K | Direct |
| Ordinary Shares, par value $0.01 per share | 187K | Indirect |
| Total | 1.11M | 927K direct·187K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported