Sean A. McCarthy
CEO at CytomX Therapeutics Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: CytomX Therapeutics Inc., 3 years.
CytomX Therapeutics Inc.
Director · CEO
Chief executive roles
CytomX Therapeutics Inc.
· CEO
Dates unknown
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 17, 2026 | CytomX Therapeutics Inc. | Open-market sale | −118,969 | $6.42 | $763,781 |
| Feb 2, 2026 | CytomX Therapeutics Inc. | Grant or award | +210,000 | — | — |
| Nov 6, 2025 | CytomX Therapeutics Inc. | Open-market sale | −101,793 | $4.54 | $462,140 |
| Jun 16, 2025 | CytomX Therapeutics Inc. | Open-market sale | −55,511 | $2.69 | $149,325 |
| Jun 13, 2025 | CytomX Therapeutics Inc. | Option exercise | +150,000 | — | — |
| Mar 18, 2025 | CytomX Therapeutics Inc. | Open-market sale | −37,656 | $0.60 | $22,594 |
| Feb 4, 2025 | CytomX Therapeutics Inc. | Grant or award | +180,000 | — | — |
| Feb 4, 2025 | CytomX Therapeutics Inc. | Grant or award | +195,000 | — | — |
| Aug 20, 2024 | CytomX Therapeutics Inc. | Option exercise | +37,500 | — | — |
| Aug 20, 2024 | CytomX Therapeutics Inc. | Open-market sale | −13,898 | $1.23 | $17,095 |
| Mar 26, 2024 | CytomX Therapeutics Inc. | Option exercise | +109,768 | $1.57 | $172,336 |
| Mar 19, 2024 | CytomX Therapeutics Inc. | Open-market sale | −20,223 | $2.09 | $42,266 |
| Jan 18, 2024 | CytomX Therapeutics Inc. | Grant or award | +90,000 | — | — |
| Dec 20, 2023 | CytomX Therapeutics Inc. | Open-market sale | −13,551 | $1.38 | $18,700 |
| Dec 17, 2023 | CytomX Therapeutics Inc. | Option exercise | +37,500 | — | — |
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