6 insiders reported 33 Form 4 transactions for CytomX Therapeutics, Inc. (CTMX) over the past 18 months (most recent 2026-06-17). Recent activity: Ogden Christopher (Chief Financial Officer) Sell 1,624 shares, McCarthy Sean A. (CEO) Sell 118,969 shares, BELVIN MARCIA (SVP, Chief Scientific Officer) Sell 31,492 shares, Chu Yu-Waye (Chief Medical Officer) Sell 21,279 shares, Ogden Christopher (Chief Financial Officer) Sell 19,323 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-17 | Ogden Christopher | Chief Financial Officer | Sell | 1,624 | $4,953 |
| 2026-03-19 | McCarthy Sean A. | CEO | Sell | 118,969 | $763,781 |
| 2026-03-19 | BELVIN MARCIA | SVP, Chief Scientific Officer | Sell | 31,492 | $202,179 |
| 2026-03-19 | Chu Yu-Waye | Chief Medical Officer | Sell | 21,279 | $136,611 |
| 2026-03-19 | Ogden Christopher | Chief Financial Officer | Sell | 19,323 | $124,054 |
| 2026-02-04 | BELVIN MARCIA | SVP, Chief Scientific Officer | Buy | 60,000 | $0 |
| 2026-02-04 | Chu Yu-Waye | Chief Medical Officer | Buy | 75,000 | $0 |
| 2026-02-04 | McCarthy Sean A. | CEO | Buy | 210,000 | $0 |
| 2026-02-04 | Ogden Christopher | Chief Financial Officer | Buy | 90,000 | $0 |
| 2026-02-04 | Lester Rachael | Chief Business Officer | Buy | 20,000 | $0 |
| 2025-11-10 | McCarthy Sean A. | CEO | Sell | 101,793 | $462,140 |
| 2025-06-17 | BELVIN MARCIA | SVP, Chief Scientific Officer | Sell | 13,884 | $37,348 |
| 2025-06-17 | BELVIN MARCIA | SVP, Chief Scientific Officer | Buy | 37,500 | $0 |
| 2025-06-17 | Ogden Christopher | Chief Financial Officer | Sell | 1,641 | $4,841 |
| 2025-06-17 | Ogden Christopher | Chief Financial Officer | Buy | 37,500 | $0 |
| 2025-06-17 | Ogden Christopher | Chief Financial Officer | Sell | 10,614 | $28,552 |
| 2025-06-17 | McCarthy Sean A. | CEO | Buy | 150,000 | $0 |
| 2025-06-17 | McCarthy Sean A. | CEO | Sell | 55,511 | $149,325 |
| 2025-03-20 | ROWLAND LLOYD A | General Counsel | Sell | 10,203 | $6,122 |
| 2025-03-20 | Chu Yu-Waye | Chief Medical Officer | Sell | 4,025 | $2,415 |
| 2025-03-20 | McCarthy Sean A. | CEO | Sell | 37,656 | $22,594 |
| 2025-03-20 | BELVIN MARCIA | SVP, Chief Scientific Officer | Sell | 19,512 | $11,707 |
| 2025-03-20 | Ogden Christopher | Chief Financial Officer | Sell | 8,551 | $5,131 |
| 2025-02-10 | BELVIN MARCIA | SVP, Chief Scientific Officer | Buy | 35,000 | $0 |
| 2025-02-10 | BELVIN MARCIA | SVP, Chief Scientific Officer | Buy | 57,500 | $0 |
Source: SEC Form 4 filings · as of 2026-06-17