Halley E. Gilbert - 15 May 2024 Form 4 Insider Report for CytomX Therapeutics, Inc. (CTMX)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CTMX	Stock Option (Right to Buy)	Award	$0	+38,000		$0.000000	38,000	15 May 2024	Common Stock	38,000	$1.96	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	The underlying shares subject to the option vest and become exercisable as to 100% of the total number of shares subject to the option on the earlier of (i) the first anniversary of the grant date or (ii) the date of the 2025 Annual Meeting of the Issuer's stockholders, assuming continuous service as a director until such vesting date.