Data spanning the past 90 days through January 09, 2026 reveals that CytomX Therapeutics's three principal insider shareholders consist of Ceo Sean A. Mccarthy (1.08Mn shares), Svp And Chief Scientific Officer Marcia Belvin (272.25K shares), Chief Financial Officer Christopher Ogden (226.27K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Sean A. Mccarthy | Ceo | 1,081,009 | 10 Nov, 2025 |
| Marcia Belvin | Svp And Chief Scientific Officer | 272,252 | 17 Jun, 2025 |
| Christopher Ogden | Chief Financial Officer | 226,271 | 17 Jun, 2025 |
| Yu-Waye Chu | Chief Medical Officer | 135,725 | 20 Mar, 2025 |
| Jeffrey B Landau | Chief Business Officer | 122,236 | 22 Aug, 2024 |
| Lloyd A Rowland | General Counsel | 120,594 | 20 Mar, 2025 |
| Amy C. Peterson | Evp And Chief Development Officer | 58,433 | 20 Mar, 2023 |
| Carlos Campoy | Chief Financial Officer | 38,224 | 20 Mar, 2023 |
| Alison L. Hannah | Chief Medical Officer | 31,898 | 21 Jul, 2022 |
| Elaine V Jones | 5,142 | 31 Mar, 2023 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 06 Nov, 2025 | Sean A. Mccarthy | Class A Common Stock | D | 101,793 | $4.54 | 987,891 | D | S |
| 16 Jun, 2025 | Sean A. Mccarthy | Common Stock | D | 55,511 | $2.69 | 1,089,684 | D | S |
| 16 Jun, 2025 | Christopher Ogden | - | - | 226,271 | D | |||
| 16 Jun, 2025 | Christopher Ogden | Common Stock | D | 10,614 | $2.69 | 226,271 | D | S |
| 16 Jun, 2025 | Marcia Belvin | - | - | 272,252 | D | |||
| 16 Jun, 2025 | Marcia Belvin | Common Stock | D | 13,884 | $2.69 | 272,252 | D | S |
| 13 Jun, 2025 | Sean A. Mccarthy | Common Stock | A | 150,000 | $0.00 | 1,145,195 | D | M |
| 13 Jun, 2025 | Christopher Ogden | Common Stock | D | 1,641 | $2.95 | 199,385 | D | S |
| 13 Jun, 2025 | Christopher Ogden | Common Stock | A | 37,500 | $0.00 | 236,885 | D | M |
| 13 Jun, 2025 | Christopher Ogden | - | - | 199,385 | D | |||
| 13 Jun, 2025 | Christopher Ogden | - | - | 236,885 | D | |||
| 13 Jun, 2025 | Marcia Belvin | Common Stock | A | 37,500 | $0.00 | 286,136 | D | M |
| 18 Mar, 2025 | Lloyd A Rowland | - | - | 120,594 | D | |||
| 18 Mar, 2025 | Lloyd A Rowland | Common Stock | D | 10,203 | $0.60 | 120,594 | D | S |
| 18 Mar, 2025 | Sean A. Mccarthy | Common Stock | D | 37,656 | $0.60 | 995,195 | D | S |
| 18 Mar, 2025 | Yu-Waye Chu | Common Stock | D | 4,025 | $0.60 | 135,725 | D | S |
| 18 Mar, 2025 | Christopher Ogden | Common Stock | D | 8,551 | $0.60 | 201,026 | D | S |
| 18 Mar, 2025 | Marcia Belvin | Common Stock | D | 19,512 | $0.60 | 248,636 | D | S |
| 04 Feb, 2025 | Sean A. Mccarthy | Common Stock | A | 180,000 | $0.00 | 837,851 | D | A |
| 04 Feb, 2025 | Sean A. Mccarthy | Common Stock | A | 195,000 | $0.00 | 1,032,851 | D | A |