Ketchum John B (CIK 1991806) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-08). Recent activity: Buy TNGX (4,000 shares), Buy TNGX (6,250 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-08 | Tango Therapeutics, Inc. (TNGX) | Director | Buy | 4,000 | $0 |
| 2025-06-09 | Tango Therapeutics, Inc. (TNGX) | Director | Buy | 6,250 | $0 |
Source: SEC Form 4 filings · as of 2026-06-08