SCULLY WILLIAM P purchased 311.5% of their position (162K shares) of PROTHENA CORP PUBLIC LTD CO on the open market
Open‑market purchase worth $1.41M — a major conviction buy. The strongest form of insider conviction signal.
P · 1 purchase
Filed: 9/30/2026ACC: 0001045463-26-000018
10% Owner
Since Dec 2024
+162K
Net shares
Net buyer
$1.41M
Total acquired
1
Open market trades
1B · 0S
1
Total transactions
162K acquired
Non-Derivative Transactions1
Ordinary Shares, par value $0.01 per share
Indirect
Shares
+162K
Price / share
$8.68
Trade value
$1.41M
% of position
311.5%
9/29/2026
52K→214K
Total
Net shares
+162K
Net value
$1.41M
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Ordinary Shares, par value $0.01 per share Indirect | 9/29/2026 | P · Purchase | +162K | $8.68 | $1.41M | 311.5% | 52K | 214K |
| Total | +162K | $1.41M | ||||||
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