Tara Nickerson, Chief Business Officer at Prothena Corp plc (PRTA), sold 17,500 shares at $64.33 ($1.1M) on 2017-09-25, disclosed to the SEC on 2017-09-27.
Open-market sale of $1.1M PRTA by Chief Business Officer. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $63.39 | 13,717 | $870K | 78.1% |
| 2 | $64.33 | 3,783 | $243K | 21.9% |
| Total | $63.59 avg | 17,500 | $1.1M | 100% |
| Filing → |
| PRTA | SELL | 2017-09-27 | $2.2M | — | Filing → |
| PRTA | SELL | 2015-12-11 | $662K | — | Filing → |
| PRTA | SELL | 2015-09-11 | $561K | — | Filing → |