UnionBanCal Corporation (NYSE:UB) today announced that the Board of Directors approved the appointment of Masaaki Tanaka as President and Chief Executive Officer of UnionBanCal Corporation and its principal subsidiary, Union Bank of California, N.A., effective May 24, 2007. Tanaka, 53, is an Executive Officer of The Bank of Tokyo-Mitsubishi UFJ, Ltd. (BTMU), UnionBanCal's majority stockholder. He has served as BTMU's General Manager, Corporate Planning Division, since January 2006. Prior to that, from May 2004 to January 2006, he served as General Manager of several BTMU corporate banking groups and business development divisions.

Tanaka's experience in the United States dates to 1984 and includes assignments at The Bank of California, a predecessor of Union Bank of California, and as a manager of BTMU's North American Planning Division in New York City. Tanaka began his banking career with Mitsubishi Bank, Ltd., a predecessor to BTMU, upon gradation from the University of Tokyo in 1977. He has an LLM degree from the University of Michigan Law School.

Tanaka succeeds Takashi Morimura, who has served as President and Chief Executive Officer of UnionBanCal and Union Bank since May 2005. Morimura, a managing executive officer of BTMU, is returning to BTMU headquarters in Tokyo for a new assignment.

The UnionBanCal board of directors also elected Norimichi Kanari to succeed Tetsuo Shimura as Chairman of the Board, effective immediately. Shimura is also returning to Japan. Kanari served as President and CEO of UnionBanCal from July 2001 to May 2005. He has served as Deputy President of BTMU, his current position, since 2005. Kanari has served as a director of UnionBanCal since July 2000.

?We are pleased to welcome Mr. Tanaka and Mr. Kanari back to Union Bank,? said Morimura. ?I am very confident in Masaaki's ability to lead this company. I also have great confidence in the other members of the executive management team ? Philip Flynn, Vice Chairman and Chief Operating Officer; David Matson, Vice Chairman and Chief Financial Officer; and Masashi Oka, Vice Chairman, Administration and Support Group. I expect that this executive management team will keep the company well-positioned competitively and financially to achieve long-term shareholder value as we go forward.?

Morimura added, ?I have been honored to serve as CEO of this great company, and I express my deep appreciation to our customers, employees, and Board of Directors.?

Based in San Francisco, UnionBanCal Corporation is a bank holding company with assets of $52.6 billion at December 31, 2006. Its principal subsidiary, Union Bank of California, N.A. had 321 banking offices in California, Oregon and Washington, and 2 international offices at December 31, 2006.