UnionBanCal Corp. said Yoshihiko Someya, a 27-year veteran of the California bank's parent, Bank of Tokyo-Mitsubishi Ltd., will become its chief financial officer and chief credit officer later this year. UnionBanCal's current CFO, Minoru Noda, is expected to return to the parent company's Tokyo headquarters for reassignment at a date not yet set, the San Francisco-based bank said. Until then, Someya will hold the job of executive vice president, credit management support and liaison, the bank said. Someya's most recent assignment was deputy general manager of Bank of Tokyo-Mitsubishi's Osaka branch. From 1987 to 1991, he was a strategic planner for the former Mitsubishi Bank Ltd.'s Bank of California unit. UnionBanCal is the holding company for Union Bank of California, the state's third-largest commercial bank, with assets of $30.6 billion. Bank of Tokyo-Mitsubishi owns more than 80% of its stock, with the rest publicly traded in the U.S. UnionBanCal shares fell 13 cents to close at $100.25 on Nasdaq.