SCULLY WILLIAM P purchased 11.9% of their position (110K shares) of PROTHENA CORP PUBLIC LTD CO on the open market
Open‑market purchase worth $920.0K — a moderate purchase. The strongest form of insider conviction signal.
P · 2 purchases
Filed: 10/15/2026ACC: 0001045463-26-000021
10% Owner
Since Dec 2024
+110K
Net shares
Net buyer
$920.0K
Total acquired
2
Open market trades
2B · 0S
2
Total transactions
110K acquired
Non-Derivative Transactions2
Ordinary Shares, par value $0.01 per share
Direct
Shares
+100K
Price / share
$8.35
Trade value
$835.48K
% of position
10.8%
10/13/2026
927K→1.03M
Ordinary Shares, par value $0.01 per share
Direct
Shares
+10K
Price / share
$8.46
Trade value
$84.57K
% of position
1.0%
10/14/2026
1.03M→1.04M
Total
Net shares
+110K
Net value
$920.05K
| Security | Date | Type | Shares | Price / Share | Trade Value | % of Position | Held Before | Held After |
|---|---|---|---|---|---|---|---|---|
| Ordinary Shares, par value $0.01 per share Direct | 10/13/2026 | P · Purchase | +100K | $8.35 | $835.48K | 10.8% | 927K | 1.03M |
| Ordinary Shares, par value $0.01 per share Direct | 10/14/2026 | P · Purchase | +10K | $8.46 | $84.57K | 1.0% | 1.03M | 1.04M |
| Total | +110K | $920.05K | ||||||
Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)2
Ordinary Shares, par value $0.01 per share
IndirectShares owned529K
Ordinary Shares, par value $0.01 per share
IndirectShares owned187K
Total
716K indirect716K
| Security Title | Shares Owned | Ownership Type |
|---|---|---|
| Ordinary Shares, par value $0.01 per share | 529K | Indirect |
| Ordinary Shares, par value $0.01 per share | 187K | Indirect |
| Total | 716K | 716K indirect |
Derivative Holdings (Post-Transaction)0
No derivative holdings reported