Arbuckle Stuart A (CIK 1557290) reported 8 SEC Form 4 insider transactions across 4 companies over the past 18 months (most recent 2026-06-25). Recent activity: Buy RYTM (4,712 shares), Buy PRAX (1,371 shares), Buy ALNY (671 shares), Buy PRAX (688 shares), Buy PRAX (478 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-25 | RHYTHM PHARMACEUTICALS, INC. (RYTM) | Director | Buy | 4,712 | $0 |
| 2026-06-12 | Praxis Precision Medicines, Inc. (PRAX) | Director | Buy | 1,371 | $0 |
| 2026-05-22 | ALNYLAM PHARMACEUTICALS, INC. (ALNY) | Director | Buy | 671 | $0 |
| 2026-02-10 | Praxis Precision Medicines, Inc. (PRAX) | Director | Buy | 688 | $0 |
| 2026-02-10 | Praxis Precision Medicines, Inc. (PRAX) | Director | Buy | 478 | $0 |
| 2025-07-02 | VERTEX PHARMACEUTICALS INC / MA (VRTX) | EVP, COO | Sell | 37,243 | $16.8M |
| 2025-06-23 | RHYTHM PHARMACEUTICALS, INC. (RYTM) | Director | Buy | 4,000 | $0 |
| 2025-05-15 | VERTEX PHARMACEUTICALS INC / MA (VRTX) | EVP, COO | Buy | 37,622 | $0 |
Source: SEC Form 4 filings · as of 2026-06-25