Xencor to Host Fourth Quarter and Full Year 2020 Financial Results Webcast and Conference Call on February 23, 2021

Xencor, Inc. (NASDAQ:XNCR), a clinical-stage biopharmaceutical company developing engineered monoclonal antibodies and cytokines for the treatment of cancer and autoimmune diseases, today announced that it will release fourth quarter and full year 2020 financial results after the market closes on Tuesday, February 23, 2021.

Xencor management will host a webcast and conference call the same day at 4:30 p.m. ET (1:30 p.m. PT) to discuss the financial results and provide a corporate update.

The live call may be accessed by dialing (877) 359-9508 for domestic callers or +1 (224) 357-2393 for international callers and referencing conference ID number 1163598. A live webcast of the conference call will be available online from the Investors section of the Company's website at www.xencor.com. The webcast will be archived on the company's website for 30 days.

About Xencor, Inc.

Xencor is a clinical-stage biopharmaceutical company developing engineered monoclonal antibodies and cytokines for the treatment of cancer and autoimmune diseases. Currently, 20 candidates engineered with Xencor's XmAb^® technology are in clinical development internally and with partners. Xencor's XmAb engineering technology enables small changes to a protein's structure that result in new mechanisms of therapeutic action. For more information, please visit www.xencor.com.

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