Who
Michael John Isaacs
General Counsel & Company Sec.
Company insider
Files Form 4 as: General Counsel & Company Sec., Prothena Corporation.
In numbers
- Trades disclosed
- 4
- Buys
- 0
- Sells
- 1
- Bought
- $0
- Sold
- $142K
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 28 Jul 2026
- Last trade
- 29 Jul 2026
- Last filed
- 30 Jul 2026
Companies traded
Activity over time
1 Jul – 1 Oct
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 29 Jul 2026filed 30 Jul 2026 | PRTA Prothena CorporationBiotechnology | SEC FORM 4 Sold | $71K8,386 at $8.47 | filing |
| 29 Jul 2026filed 30 Jul 2026 | PRTA Prothena CorporationBiotechnology | SEC FORM 4 Sold | $71K8,386 at $8.47 | filing |
| 28 Jul 2026filed 30 Jul 2026 | PRTA Prothena CorporationBiotechnology | SEC FORM 4 Code F | $40K4,694 at $8.56 | filing |
| 28 Jul 2026filed 30 Jul 2026 | PRTA Prothena CorporationBiotechnology | SEC FORM 4 Code F | $40K4,694 at $8.56 | filing |
News
Prothena Corporation plc (PRTA) – What Are Analysts Saying About This Stock?PRTA · dailypolitical.com · 20 Oct 2026Prothena (NASDAQ:PRTA) Major Shareholder William Scully Buys 100,000 Shares of Company StockPRTA · dailypolitical.com · 15 Oct 2026Prothena (NASDAQ:PRTA) vs. Kyntra Bio (NASDAQ:KYNB) Financial ReviewPRTA · dailypolitical.com · 12 Oct 2026
0 headlines in the last 90 days name Michael John Isaacs; 3 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.