Smith Brandon S.
Chief Operating Officer
Disposition
Calculated transaction value
$667.68K
78,000 shares @ $8.56
Traded
Jul 28, 2026
Filed
Jul 30, 2026
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Prothena Corporation plc Ordinary Shares
PRTA
ManufacturingChemicals
Transactions reported in official disclosures
Price with disclosed trades
Daily closes, past year · marks sit on transaction dates, sized by value
48 trades
| Reporting person | Filed | Transaction | Transaction value | Source | Actions |
|---|---|---|---|---|---|
| Smith Brandon S. Chief Operating Officer | Jul 30, 2026 2-day lag | Disposition Jul 28, 2026 | $667.68K Filed shares x price | SEC Form 4 View filing | |
| Smith Brandon S. Chief Operating Officer | Jul 30, 2026 2-day lag | Exercise Jul 28, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Smith Brandon S. Chief Operating Officer | Jul 30, 2026 2-day lag | Exercise Jul 28, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Nguyen Tran Chief Strategy Officer And CFO | Jul 30, 2026 2-day lag | Exercise Jul 28, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Nguyen Tran Chief Strategy Officer And CFO | Jul 30, 2026 2-day lag | Exercise Jul 28, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Nguyen Tran Chief Strategy Officer And CFO | Jul 30, 2026 2-day lag | Disposition Jul 28, 2026 | $487.92K Filed shares x price | SEC Form 4 View filing | |
| Kinney Gene G. President And CEO | Jul 30, 2026 2-day lag | Exercise Jul 28, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Kinney Gene G. President And CEO | Jul 30, 2026 2-day lag | Disposition Jul 28, 2026 | $719.04K Filed shares x price | SEC Form 4 View filing | |
| Kinney Gene G. President And CEO | Jul 30, 2026 2-day lag | Exercise Jul 28, 2026 | Not reported Reported range | SEC Form 4 View filing | |
| Kingston Anne Evans Chief Strategy Officer | Jul 30, 2026 1-day lag | Sale Jul 29, 2026 | $64.92K Filed shares x price | SEC Form 4 View filing | |
| Kingston Anne Evans Chief Strategy Officer | Jul 30, 2026 2-day lag | Disposition Jul 28, 2026 | $29.94K Filed shares x price | SEC Form 4 View filing | |
| Isaacs Michael John General Counsel & Company Sec. | Jul 30, 2026 1-day lag | Sale Jul 29, 2026 | $71.06K Filed shares x price | SEC Form 4 View filing | |
| Isaacs Michael John General Counsel & Company Sec. | Jul 30, 2026 2-day lag | Disposition Jul 28, 2026 | $40.18K Filed shares x price | SEC Form 4 View filing | |
| Scully William P 10% owner | Jun 18, 2026 2-day lag | Buy Jun 16, 2026 | $157.99K Filed shares x price | SEC Form 4 View filing | |
| Scully William P 10% owner | Jun 16, 2026 1-day lag | Gift Jun 15, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Scully William P 10% owner | Jun 12, 2026 1-day lag | Buy Jun 11, 2026 | $1.02M Filed shares x price | SEC Form 4 View filing | |
| Scully William P 10% owner | Jun 5, 2026 1-day lag | Buy Jun 4, 2026 | $465.3K Filed shares x price | SEC Form 4 View filing | |
| Scully William P 10% owner | Jun 3, 2026 1-day lag | Buy Jun 2, 2026 | $471.3K Filed shares x price | SEC Form 4 View filing |
Smith Brandon S.
Chief Operating Officer
Exercise
Reported value range
Not reported
78,000 shares
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Smith Brandon S.
Chief Operating Officer
Exercise
Calculated transaction value
$0
78,000 shares @ $0
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Nguyen Tran
Chief Strategy Officer And CFO
Exercise
Reported value range
Not reported
57,000 shares
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Nguyen Tran
Chief Strategy Officer And CFO
Exercise
Calculated transaction value
$0
57,000 shares @ $0
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Nguyen Tran
Chief Strategy Officer And CFO
Disposition
Calculated transaction value
$487.92K
57,000 shares @ $8.56
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Kinney Gene G.
President And CEO
Exercise
Calculated transaction value
$0
84,000 shares @ $0
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Kinney Gene G.
President And CEO
Disposition
Calculated transaction value
$719.04K
84,000 shares @ $8.56
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Kinney Gene G.
President And CEO
Exercise
Reported value range
Not reported
84,000 shares
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Kingston Anne Evans
Chief Strategy Officer
Sale
Calculated transaction value
$64.92K
7,662 shares @ $8.47
Traded
Jul 29, 2026
Filed
Jul 30, 2026
Kingston Anne Evans
Chief Strategy Officer
Disposition
Calculated transaction value
$29.94K
3,498 shares @ $8.56
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Isaacs Michael John
General Counsel & Company Sec.
Sale
Calculated transaction value
$71.06K
8,386 shares @ $8.47
Traded
Jul 29, 2026
Filed
Jul 30, 2026
Isaacs Michael John
General Counsel & Company Sec.
Disposition
Calculated transaction value
$40.18K
4,694 shares @ $8.56
Traded
Jul 28, 2026
Filed
Jul 30, 2026
Scully William P
10% owner
Buy
Calculated transaction value
$157.99K
20,000 shares @ $7.9
Traded
Jun 16, 2026
Filed
Jun 18, 2026
Scully William P
10% owner
Gift
Calculated transaction value
$0
325,000 shares @ $0
Traded
Jun 15, 2026
Filed
Jun 16, 2026
Scully William P
10% owner
Buy
Calculated transaction value
$1.02M
125,000 shares @ $8.17
Traded
Jun 11, 2026
Filed
Jun 12, 2026
Scully William P
10% owner
Buy
Calculated transaction value
$465.3K
50,000 shares @ $9.31
Traded
Jun 4, 2026
Filed
Jun 5, 2026
Scully William P
10% owner
Buy
Calculated transaction value
$471.3K
50,000 shares @ $9.43
Traded
Jun 2, 2026
Filed
Jun 3, 2026