Swanson Chad J. (CIK 2038509) reported 4 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-07-30). Recent activity: Buy PRTA (51,000 shares), Sell PRTA (40,800 shares), Sell PRTA (3,467 shares), Buy PRTA (85,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-30 | PROTHENA CORP PUBLIC LTD CO (PRTA) | Chief Development Officer | Buy | 51,000 | $0 |
| 2026-07-30 | PROTHENA CORP PUBLIC LTD CO (PRTA) | Chief Development Officer | Sell | 40,800 | $349,248 |
| 2026-07-30 | PROTHENA CORP PUBLIC LTD CO (PRTA) | Chief Development Officer | Sell | 3,467 | $29,678 |
| 2025-07-30 | PROTHENA CORP PUBLIC LTD CO (PRTA) | Chief Development Officer | Buy | 85,000 | $0 |
Source: SEC Form 4 filings · as of 2026-07-30