BELVIN MARCIA (CIK 1970752) reported 9 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-03-19). Recent activity: Sell CTMX (31,492 shares), Buy CTMX (60,000 shares), Buy CTMX (37,500 shares), Sell CTMX (13,884 shares), Sell CTMX (19,512 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-19 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Sell | 31,492 | $202,179 |
| 2026-02-04 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Buy | 60,000 | $0 |
| 2025-06-17 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Buy | 37,500 | $0 |
| 2025-06-17 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Sell | 13,884 | $37,348 |
| 2025-03-20 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Sell | 19,512 | $11,707 |
| 2025-02-10 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Buy | 35,000 | $0 |
| 2025-02-10 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Buy | 57,500 | $0 |
| 2025-02-06 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Buy | 30,000 | $0 |
| 2025-02-06 | CytomX Therapeutics, Inc. (CTMX) | SVP, Chief Scientific Officer | Buy | 57,500 | $0 |
Source: SEC Form 4 filings · as of 2026-03-19