Exhibit 99.1 1 CytomX Therapeutics Reports Third Quarter 2024 Financial Results and Provides Business Update - Phase 1a dose escalation for CX-904 (EGFR-CD3 PROBODY® T-cell engager) continues to advance. Potential Phase 1b initiation in 2025. - - Phase 1 study of CX-2051 (EpCAM PROBODY® ADC) in advanced colorectal cancer (CRC) is currently in the fifth dose escalation cohort. Initial data anticipated in the first half of 2025. - - Phase 1 study of CX-801 (interferon alpha-2b PROBODY® cytokine) as monotherap ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _ to _ | --- | --- | --- | |--------------------------------------------------------------------------------------------------------------|--------------- ...

SOUTH SAN FRANCISCO, Calif., Sept. 09, 2024 (GLOBE NEWSWIRE) -- CytomX Therapeutics, Inc. (Nasdaq: CTMX), a leader in the field of masked, conditionally activated biologic therapeutics, today announced that the first patient has been dosed with CX-801 monotherapy in a Phase 1 study (NCT06462794) in patients with solid tumors. CX-801 is a dually-masked interferon alpha-2b PROBODY® cytokine with potential broad applicability in both traditionally immune-oncology sensitive as well as insensitive (cold) tumors. ...

CytomX Therapeutics, Inc. (NASDAQ:CTMX) Q2 2024 Earnings Conference Call August 8, 2024 5:00 PM ET Company Participants Chris Ogden - Chief Financial Officer Sean McCarthy - Chief Executive Officer and Chairman Wayne Chu - Chief Medical Officer Conference Call Participants Etzer Darout - BMO Capital Markets Malcolm Kuno - JPM Operator Good afternoon, everyone. Thank you for standing by and welcome to the CytomX Therapeutics Second Quarter 2024 Financial Results Call. Please be advised that today's call is b ...

Exhibit 99.1 CytomX Therapeutics Reports Second Quarter 2024 Financial Results and Provides Business Update - CX-904 (EGFR-CD3 PROBODY® T-cell engager) Phase 1a enrollment continues, primarily focused in PDAC, NSCLC, and HNSCC. Program update expected by the end of 2024 - - Phase 1 clinical study of CX-2051, an EpCAM targeting PROBODY® ADC, is ongoing. Study is currently enrolling third cohort with enrollment focused primarily in colorectal cancer (CRC); initial data anticipated in the first half of 2025 - ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Quarterly Period Ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from _ to _ | --- | --- | |-------------------------------------------------------------------------------------------------|-------------------------------| | Comm ...

SOUTH SAN FRANCISCO, Calif., June 18, 2024 (GLOBE NEWSWIRE) -- CytomX Therapeutics, Inc. (Nasdaq: CTMX), a leader in the field of masked, conditionally activated biologic therapeutics, today announced that Sean McCarthy, D.Phil., chief executive officer and chairman, will participate in a fireside chat at the H.C. Wainwright 2nd Annual Immune Cell Engager Virtual Conference on Tuesday, June 25, 2024, at 2:00 p.m. ET. About CytomX Therapeutics A live webcast of the presentation will be available on the Event ...

SOUTH SAN FRANCISCO, Calif., June 18, 2024 (GLOBE NEWSWIRE) -- CytomX Therapeutics, Inc. (Nasdaq: CTMX), a leader in the field of masked, conditionally activated biologic therapeutics, today announced that Sean McCarthy, D.Phil., chief executive officer and chairman, will participate in a fireside chat at the H.C. Wainwright 2nd Annual Immune Cell Engager Virtual Conference on Tuesday, June 25, 2024, at 2:00 p.m. ET. About CytomX Therapeutics A live webcast of the presentation will be available on the Event ...

SOUTH SAN FRANCISCO, Calif., June 17, 2024 (GLOBE NEWSWIRE) -- CytomX Therapeutics, Inc. (Nasdaq: CTMX), a leader in the field of masked, conditionally activated biologics, today announced the promotion of Chris Ogden to Chief Financial Officer effective June 15, 2024. "It is a privilege to work with the incredibly talented team at CytomX, and I am thrilled to assume the CFO role and to continue to help lead the company through this next chapter, as we pursue our vision to transform lives with safer, more e ...

"Chris has made broad contributions as a member of the CytomX executive team and is a proven crossfunctional leader within the organization," said Sean McCarthy, D.Phil., chief executive officer and chairman of CytomX. "We are excited to announce this promotion, which is a reflection of Chris' financial acumen, strategic leadership and deep commitment to CytomX's mission." About CytomX Therapeutics This press release includes forward-looking statements. Such forward-looking statements involve known and unkn ...