Corporate headquarters

XOMA Corporation
2910 Seventh Street
Berkeley, CA 94710
(510) 204-7200


Product and technology licensing and partnerships

We encourage technology licensing inquiries and collaborations with other companies. Please include informational materials about your company along with a cover letter indicating your area of interest to:

Business DevelopmentĀ 
XOMA Corporation
(510) 204-7200

Investors and news media

Shareholders, investors, brokers, analysts and the media may contact our investor relations department:
(510) 204-7482 orĀ

For inquiries regarding share ownership, transfer, etc., please contact XOMA’s transfer agent:

Wells Fargo
Shareowner Services
P.O. Box 64874
St. Paul, MN 55164


161 N. Concord Exchange
South St. Paul, MN 55075
(800) 468-9716 or
(651) 450-4064