X0609 4 2026-06-17 0001501989 CytomX Therapeutics, Inc. CTMX 0001664708 Mohindru Mani false C/O CYTOMX THERAPEUTICS, INC. 151 OYSTER POINT BLVD., STE. 400 SOUTH SAN FRANCISCO CA 94080 true false Stock Option (Right to Buy) 2.96 2026-06-17 4 A 0 59000 0 A 2036-06-16 Common Stock 59000 59000 D 100% of the shares subject to the option shall vest in full on the earlier of (i) the first anniversary of the grant date or (ii) the date of the 2027 Annual Meeting of the Issuer's stockholders, assuming continuous service as a director until such vesting date. /s/ Christopher Ogden, as Attorney-in-Fact for Mani Mohindru 2026-06-22