Insider Trading
Current insider transactions (SEC Form 4) — buys and sells by officers, directors, and major shareholders.
| Ticker | Insider | Title | Date | Transaction | Price ($) | Shares | Value ($) | SEC Form 4 |
|---|---|---|---|---|---|---|---|---|
| PRTA | Kingston Anne Evans | Chief Strategy Officer | 07/29/2026 | Verkauf | 8.47 | 7,662 | 64,919 | Form 4 |
| PRTA | Isaacs Michael John | General Counsel & Company Sec. | 07/29/2026 | Verkauf | 8.47 | 8,386 | 71,055 | Form 4 |
| PRTA | Zago Wagner M. | Chief Scientific Officer | 07/28/2026 | Abgabe | 8.56 | 51,000 | 436,560 | Form 4 |
| PRTA | Zago Wagner M. | Chief Scientific Officer | 07/28/2026 | Optionsausübung | — | 51,000 | — | Form 4 |
| PRTA | Walker Karin L | Chief Accounting Officer | 07/28/2026 | Abgabe | 8.56 | 15,000 | 128,400 | Form 4 |
| PRTA | Walker Karin L | Chief Accounting Officer | 07/28/2026 | Optionsausübung | — | 15,000 | — | Form 4 |
| PRTA | Swanson Chad J. | Chief Development Officer | 07/28/2026 | Steuer-Abgabe | 8.56 | 3,467 | 29,678 | Form 4 |
| PRTA | Swanson Chad J. | Chief Development Officer | 07/28/2026 | Abgabe | 8.56 | 40,800 | 349,248 | Form 4 |
| PRTA | Swanson Chad J. | Chief Development Officer | 07/28/2026 | Optionsausübung | — | 51,000 | — | Form 4 |
| PRTA | Smith Brandon S. | Chief Operating Officer | 07/28/2026 | Abgabe | 8.56 | 78,000 | 667,680 | Form 4 |
| PRTA | Smith Brandon S. | Chief Operating Officer | 07/28/2026 | Optionsausübung | — | 78,000 | — | Form 4 |
| PRTA | Nguyen Tran | Chief Strategy Officer and CFO | 07/28/2026 | Abgabe | 8.56 | 57,000 | 487,920 | Form 4 |
| PRTA | Nguyen Tran | Chief Strategy Officer and CFO | 07/28/2026 | Optionsausübung | — | 57,000 | — | Form 4 |
| PRTA | Kinney Gene G. | President and CEO | 07/28/2026 | Abgabe | 8.56 | 84,000 | 719,040 | Form 4 |
| PRTA | Kinney Gene G. | President and CEO | 07/28/2026 | Optionsausübung | — | 84,000 | — | Form 4 |
| PRTA | Kingston Anne Evans | Chief Strategy Officer | 07/28/2026 | Steuer-Abgabe | 8.56 | 3,498 | 29,943 | Form 4 |
| PRTA | Isaacs Michael John | General Counsel & Company Sec. | 07/28/2026 | Steuer-Abgabe | 8.56 | 4,694 | 40,181 | Form 4 |
A compact market overview — not investment advice. Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q).