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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1501989	Cytomx Therapeutics Inc.	CTMX	Pharmaceutical Preparations (2834)	273521219

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1918615	B Jeffrey Landau	C/O Cytomx Therapeutics, Inc. 151 Oyster Point Blvd., Suite 400 South San Francisco CA 94080	Chief Business Officer	No	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2024-08-20	11,250	$0.00	123,237	No	4	M	Direct
Common Stock	Disposition	2024-08-20	4,181	$1.23	119,056	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Performance Stock Units (PSUs)	Disposition	2024-08-20	11,250	$0.00	11,250	$0.00

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0			No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	4,500	Indirect	Fidelity Traditional IRA
Common Stock	3,180	Indirect	Schwab ROTH IRA

Footnotes

Represents vesting of a Performance Stock Unit ("PSU") award initially granted on August 10, 2022.
Includes 1,927 shares acquired pursuant to the Issuer's Employee Stock Purchase Plan on May 31, 2024.
Includes 64,802 restricted stock units.
The shares were sold solely to satisfy tax or other government withholding obligations in connection with the vesting of PSUs reported herein.
Each PSU represents a contingent right to receive one share of the Issuer's Common Stock upon vesting. 50% of the PSUs vested on December 17, 2023 upon achievement of a certain performance-based milestone. In connection with the vesting reported herein, the remaining 50% of the PSUs vested upon achievement of a certain performance-based milestone.