AI Earnings Predictions for Xencor Inc. (XNCR)

EX-99.1

2 xncr-20260805xexx991.htm

EX-99.1

Document

Exhibit 99.1

Xencor Reports Second Quarter 2026 Financial Results

-- XmAb819 ccRCC expansion cohorts to be presented in an oral session at ESMO 2026; multiple Phase 1 sub-studies in earlier lines of therapy and additional indications now open for enrollment or planned --

-- XmAb942 enrollment in XENITH-UC remains on track with primary endpoint of the 12-week induction period expected in 2H27 --

-- XmAb412 (TL1A x IL23p19) first-in-human healthy participant study open for enrollment --

PASADENA, Calif.--August 5, 2026-- Xencor, Inc. (NASDAQ:XNCR), a clinical-stage biopharmaceutical company developing engineered antibodies for the treatment of cancer and autoimmune diseases, today reported financial results for the second quarter ended June 30, 2026.

“We are excited to present XmAb819 results at ESMO this fall and for other fast-approaching key milestones across our wholly owned clinical pipeline,” said Bassil Dahiyat, Ph.D., president and chief executive officer at Xencor. “Enrollment remains on track for updates later this year for XmAb942 in the XENITH-UC study and for our two B-cell depleting bispecifics, plamotamab and XmAb657, in their respective Phase 1 studies. And we recently started the Phase 1 study of XmAb412, our first XenLock™ bispecific antibody, and plan to have healthy participant data in the first half of 2027. Xencor’s focus on clinical execution and data delivery is setting us up for an accelerating tempo of anticipated readouts in 2027 and beyond.”

“Consistent with our focus on efficient clinical decision-making, we have prioritized the ongoing combination study of XmAb541 and XmAb808, which provides tumor-targeted co-stimulation through CD28 agonism, after observing moderate anti-tumor activity from early monotherapy data of XmAb541. CLDN6 remains a challenging tumor target, and we hope to expand upon an emerging therapeutic window through the orthogonal targeting provided by XmAb808.”

Wholly Owned Pipeline Overview

XmAb819 (ENPP3 x CD3), a potential first-in-class, tumor-targeted, T-cell engaging XmAb® 2+1 bispecific antibody in development for patients with clear cell renal cell carcinoma and other tumors with high ENPP3 expression, including colorectal cancer, non-small cell lung cancer and papillary renal cell carcinoma

Clear cell renal cell carcinoma (ccRCC): On track to initiate a registration enabling study of XmAb819 as a monotherapy in advanced ccRCC during 2027.

•Phase 1 results for patients with advanced ccRCC were accepted for a proffered paper oral presentation at the European Society For Medical Oncology (ESMO) Congress 2026, to be held October 23-27 in Madrid, Spain. The presentation during ESMO will focus on dose levels in intravenous expansion cohorts under evaluation as recommended Phase 3 doses (RP3D).

•Dose escalation of subcutaneous administration in advanced ccRCC is ongoing with evaluation for further development expected prior to a registration enabling study.

•A sub-study for patients with intermediate- or poor-risk advanced ccRCC who have progressed after nivolumab in combination with ipilimumab as a first-line treatment (IO doublet therapy) is planned to open for enrollment in the third quarter of 2026.

•A sub-study evaluating the combination of XmAb819 and anti-PD1 therapy in patients with advanced ccRCC is currently being planned.

Additional tumors with high ENPP3 expression

•A sub-study for patients with ENPP3+ advanced colorectal cancer, non-small cell lung cancer and papillary renal cell carcinoma began enrollment in the second quarter of 2026.

XmAb541 (CLDN6 x CD3) in combination with XmAb808 (B7-H3 x CD28), in Phase 1 clinical development for T-cell engagement of Claudin-6 expressing tumors, including high-grade serous ovarian cancer

XmAb541 development in the ongoing Phase 1 dose-escalation study in combination with XmAb808 has been prioritized. XmAb541 monotherapy expansion cohorts at the putative RP3D (60 mg dosed every 3 weeks) in high-grade serous ovarian carcinoma (TPS≥50) and germ cell tumors are expected to complete enrollment by year end, with the data supporting combination development with XmAb808. The Phase 1 dose-escalation study of XmAb541 and XmAb808 is ongoing and expected to reach the combination’s target dose range in 2027. Prioritization of the combination is anticipated to reduce projected overall XmAb541 program expense for 2027 and 2028.

XmAb541 Clinical Data

•Emerging data from XmAb541 monotherapy indicate clinical activity to date at the putative RP3D in heavily-pretreated patients, with an approximate 14% overall response rate (ORR) in patients with ovarian cancer and an approximate 28% ORR in patients with germ cell tumors, which supports further evaluation in combination with XmAb808 to provide tumor-targeted CD28 agonism and additional T-cell stimulation.

•Potential additional anti-tumor activity was observed at doses above 60 mg, but reversible hearing

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