Sean A. McCarthy, CEO of CytomX Therapeutics ($CTMX), made three open market sales of company shares over the past year, totaling about $634,000. His most recent sale occurred on November 6, 2025. These transactions rank 5,972nd among nearly 12,000 insiders in our database, well below the average sale value of $8.6 million across 6.4 transactions per insider. McCarthy recorded no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 17, 2026 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | S | Common Stock | 118969 | $6.42 | 1,172,080.0000 | 169,435,395 | 9.21% | 0.07% |
| Feb. 2, 2026 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Stock Option (Right to Buy) | 980000 | $0.00 | 980,000.0000 | 169,435,395 | 9999.99% | 0.58% |
| Feb. 2, 2026 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Common Stock | 210000 | $0.00 | 1,291,049.0000 | 169,435,395 | 19.43% | 0.12% |
| Nov. 6, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | S | Class A Common Stock | 101793 | $4.54 | 1,081,049.0000 | 169,435,395 | 8.61% | 0.06% |
| Sept. 26, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Performance Stock Units (PSUs) | 285000 | $0.00 | 285,000.0000 | 80,099,889 | 9999.99% | 0.36% |
| Sept. 26, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Stock Option (Right to Buy) | 570000 | $0.00 | 570,000.0000 | 80,099,889 | 9999.99% | 0.71% |
| June 13, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | M | Common Stock | 150000 | $0.00 | 1,238,353.0000 | 80,099,889 | 13.78% | 0.19% |
| June 16, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | S | Common Stock | 55511 | $2.69 | 1,182,842.0000 | 80,099,889 | 4.48% | 0.07% |
| June 13, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | M | Performance Stock Units | 150000 | $0.00 | 0.0000 | 80,099,889 | 100.00% | 0.19% |
| March 18, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | S | Common Stock | 37656 | $0.60 | 1,088,353.0000 | 80,099,889 | 3.34% | 0.05% |
| Feb. 4, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Stock Option (Right to Buy) | 800000 | $0.00 | 800,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 4, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Stock Option (Right to Buy) | 390000 | $0.00 | 390,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 4, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Common Stock | 180000 | $0.00 | 931,009.0000 | 0 | 23.97% | 0.00% |
| Feb. 4, 2025 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Common Stock | 195000 | $0.00 | 1,126,009.0000 | 0 | 20.95% | 0.00% |
| Aug. 20, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | S | Common Stock | 13898 | $1.23 | 751,009.0000 | 0 | 1.82% | 0.00% |
| Aug. 20, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | M | Performance Stock Units (PSUs) | 37500 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| Aug. 20, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | M | Common Stock | 37500 | $0.00 | 764,907.0000 | 0 | 5.16% | 0.00% |
| March 26, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | M | Common Stock | 109768 | $1.57 | 727,407.0000 | 0 | 17.77% | 0.00% |
| March 26, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | M | Stock Option (Right to Buy) | 109768 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| March 19, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | S | Common Stock | 20223 | $2.09 | 617,639.0000 | 0 | 3.17% | 0.00% |
| Jan. 18, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Stock Option (Right to Buy) | 420000 | $0.00 | 420,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 18, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Common Stock | 90000 | $0.00 | 637,862.0000 | 0 | 16.43% | 0.00% |
| Jan. 18, 2024 | CytomX Therapeutics, Inc. | $CTMX | McCarthy Sean A. | CEO | A | Performance Stock Units (PSUs) | 260000 | $0.00 | 260,000.0000 | 0 | 9999.99% | 0.00% |