Insider · CIK 0001457013
Tran Nguyen
Files at: PRTA, SRRA. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jul 28, 2026 DMForm 4 → | Jul 30, 8:32 pm EDT | PROTHENA CORP PUBLIC LTD COPRTA | 114,000 | $8.56 | $487,920 | 40,205 | — | |
| Mar 9, 2017 PForm 4 → | Mar 9, 4:06 pm EST | Prothena Corp plcPRTA | 1,000 | $51.32 | $51,317 | 3,200 | +45.5% | plan? |
| Dec 9, 2015 SForm 4 → | Dec 11, 4:13 pm EST | Prothena Corp plcPRTA | 30,000 | $66.17 | $1,984,975 | 2,200 | −93.2% | plan? |
| Dec 9, 2015 MForm 4 → | Dec 11, 4:13 pm EST | Prothena Corp plcPRTA | 30,000 | $6.73 | $201,900 | 32,200 | — | plan? |
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jul 28, 2026 MForm 4 → | Jul 30, 8:32 pm EDT | PROTHENA CORP PUBLIC LTD COPRTA | 57,000 | — | — | 0 | — | |
| Feb 27, 2019 AForm 4 → | Mar 1, 4:15 pm EST | Prothena Corp plcPRTA | 95,000 | — | — | 95,000 | — | |
| Jun 21, 2018 AForm 4 → | Jun 25, 4:32 pm EDT | Prothena Corp plcPRTA | 250,000 | — | — | 250,000 | — | |
| Jun 12, 2018 AForm 4 → | Jun 14, 5:08 pm EDT | Sierra Oncology, Inc.SRRA | 25,000 | — | — | 25,000 | — | |
| Feb 21, 2018 AForm 4 → | Feb 23, 4:05 pm EST | Prothena Corp plcPRTA | 80,000 | — | — | 80,000 | — | |
| Jun 13, 2017 AForm 4 → | Jun 14, 5:30 pm EDT | Sierra Oncology, Inc.SRRA | 25,000 | — | — | 25,000 | — | |
| Feb 22, 2017 AForm 4 → | Feb 24, 4:05 pm EST | Prothena Corp plcPRTA | 75,000 | — | — | 75,000 | — | |
| Jun 9, 2016 AForm 4 → | Jun 13, 5:01 pm EDT | ProNAi Therapeutics IncDNAI | 77,670 | — | — | 77,670 | — | |
| Feb 24, 2016 AForm 4 → | Feb 26, 7:02 pm EST | Prothena Corp plcPRTA | 65,000 | — | — | 65,000 | — | |
| Dec 9, 2015 MForm 4 → | Dec 11, 4:13 pm EST | Prothena Corp plcPRTA | 30,000 | — | — | 150,000 | — | |
| Mar 11, 2015 AForm 4 → | Mar 12, 4:07 pm EDT | Prothena Corp plcPRTA | 55,000 | — | — | 55,000 | — |