OncoMed Pharmaceuticals, Inc. announced that on March 16, 2018, the Board appointed Yvonne Li, age 58, the Company's Vice President, Finance, Controller and Administration as the Company's principal accounting officer and principal financial officer, effective immediately. Ms. Li has served as Vice President, Finance, Controller and Administration since March 2014, and previously served as Vice President, Controller from December 2012, Senior Director, Controller from January 2010, and Director, Controller from April 2007.