Venrock Healthcare Capital Partners III, L.P. - Sep 30, 2025 SCHEDULE 13G/A Report for CytomX Therapeutics, Inc. Common Stock, $0.00001 par value per share (CTMX)

Filing Manager
Venrock Healthcare Capital Partners III, L.P.
Reporting Manager
Venrock Healthcare Capital Partners III, L.P.
Security
CytomX Therapeutics, Inc. Common Stock, $0.00001 par value per share
Symbol
CTMX
Shares outstanding
166M shares
Disclosed Ownership
15.6M shares
Ownership
9.4%
Form type
SCHEDULE 13G/A
Date filed
11/14/2025, 05:30 PM
Date of event
Sep 30, 2025
Previous filing
May 20, 2025
SEC
View on sec.gov

Reporting Managers (7)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Venrock Healthcare Capital Partners III, L.P. 9.4% 15.6M 0 15.6M /s/ Sherman G. Souther By VHCP Management III, LLC, its General Partner, By Sherman G. Souther, Authorized Signatory
VHCP Co-Investment Holdings III, LLC 9.4% 15.6M 0 15.6M /s/ Sherman G. Souther By VHCP Management III, LLC, its Manager, By Sherman G. Souther, Authorized Signatory
Venrock Healthcare Capital Partners EG, L.P. 9.4% 15.6M 0 15.6M /s/ Sherman G. Souther By VHCP Management EG, LLC, its General Partner, By Sherman G. Souther, Authorized Signatory
VHCP Management III, LLC 9.4% 15.6M 0 15.6M /s/ Sherman G. Souther By Sherman G. Souther, Authorized Signatory
VHCP Management EG, LLC 9.4% 15.6M 0 15.6M /s/ Sherman G. Souther By Sherman G. Souther, Authorized Signatory
Nimish Shah 9.4% 15.6M 0 15.6M /s/ Sherman G. Souther By Sherman G. Souther, Attorney-in-fact
Bong Y. Koh 9.4% 15.6M 0 15.6M /s/ Sherman G. Souther By Sherman G. Souther, Attorney-in-fact