SEC Form 4 · accession 0001140361-15-037811

CytomX Therapeutics, Inc. · CTMX

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Timothy M Shannon

Director

Period of report

Oct 14, 2015

Accepted (ET)

Oct 16, 2015 · 10:16 am EDT

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001501989

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Oct 14, 2015	C	3,566,337	—	A	3,566,337	I	By Canaan IX L.P.
Common Stock^F1,F2	Oct 14, 2015	C	1,318,418	—	A	1,318,418	I	By Canaan IX L.P.

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series B-1 Convertible Preferred Stock^F1,F2	—	Oct 14, 2015	C	3,566,337	D	—	—	Common Stock	3,566,337	0	I
Series C Convertible Preferred Stock^F1,F2	—	Oct 14, 2015	C	1,318,418	D	—	—	Common Stock	1,318,418	0	I

Explanation of responses

F1Each of the Series B-1 Convertible Preferred Stock and the Series C Convertible Preferred Stock was convertible at any time at the option of the holder into Common Stock on a one-for-one basis, for no additional consideration, and had no expiration date. Each of the Series B-1 Convertible Preferred Stock and the Series C Convertible Preferred Stock automatically converted into Common Stock, on a one-for-one basis and for no additional consideration, upon closing of the Issuer's initial public offering of its Common Stock.
F2These shares are held directly by Canaan IX L.P. The Reporting Person is a non-managing member of Canaan Partners IX LLC, the general partner of Canaan IX L.P. The Reporting Person does not have voting, investment or dispositive power over any of the shares directly held by Canaan IX L.P. and disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

Remarks

Exhibit 24.1 - Power of Attorney (incorporated by reference to the Power of Attorney filed as Exhibit 24.1 to the Form 3 filed by the reporting person on October 7, 2015)