Xencor Appoints Bart Cornelissen as Chief Financial Officer

PASADENA, Calif. – Xencor, Inc. (NASDAQ:XNCR), a clinical-stage biopharmaceutical company developing engineered antibodies for the treatment of cancer and other serious diseases, today announced the appointment of Bart Cornelissen to senior vice president and chief financial officer. Mr. Cornelissen has more than 20 years of experience in corporate financial planning, analysis and transaction support. Before joining Xencor, he was most recently vice president, corporate finance at Seagen Inc., where he was instrumental in the company’s transformation into a global, multi-product organization that generated over $2 billion in annual revenue.

“Bart’s exceptional track record in financial planning and analysis, business development and organizational excellence will be of great value to Xencor as we advance our maturing clinical-stage pipeline of drug candidates and continue to explore our XmAb^® platforms against novel biology,” said Bassil Dahiyat, Ph.D., president and chief executive officer at Xencor. “Throughout his career, Bart has demonstrated collaborative leadership during periods of organizational growth, including in the run up to commercialization, as well as a dedication to improving health across the globe, and we are delighted that he has joined our team.”

As vice president, corporate finance at Seagen, Mr. Cornelissen built and scaled the corporate finance organization to support tremendous revenue growth and dealmaking activity, including multiple licensing transactions and the company’s $43 billion acquisition by Pfizer in 2023. Before Seagen, while at the Bill & Melinda Gates Foundation, he served as vice president, finance for the END Fund, through which he enhanced the fund’s financial analysis and strategic decision-making capabilities. He had also been the Gates Foundation’s finance lead for malaria and neglected tropical disease initiatives, where he guided new investments for major drug and vaccine development partnerships. Earlier in his career, Mr. Cornelissen provided leadership to multiple finance teams in Austria, Germany and Switzerland, at DSM Nutritional Products, a former division of Roche. He began his career within the life sciences and global health sectors at Novartis, in roles of increasing responsibility within global financial planning and analysis. Mr. Cornelissen received his M.Sc. in Business Administration from the Rotterdam School of Management at Erasmus University.

“Xencor has earned a longstanding reputation as a leader in protein engineering, with its XmAb technologies behind multiple products marketed by partners and collaborations that have continued to enable reinvestment in novel drug candidates for development,” said Mr. Cornelissen. “I am pleased to join Xencor to support planning and capitalization for the company’s growth, as its internal pipeline, focused on XmAb bispecific T cell engagers in oncology, advances through clinical development.”

About Xencor

Xencor is a clinical-stage biopharmaceutical company developing engineered antibodies for the treatment of patients with cancer and other serious diseases. More than 20 candidates engineered with Xencor’s XmAb^® technology are in clinical development, and three XmAb medicines are marketed by 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.

Forward-Looking Statements

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