SEC Insider Transactions from McCarthy Sean A..

Last updated: 2026-03-19 23:02 UTC | Total transactions: 23

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.

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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%