Mizuho Financial Group, Inc
"Reports issued by U.S. researchers attempting to document activity by multinational companies in Iran have named...units of Japan's three largest banks--Mitsubishi UFJ Financial Group Inc, Sumitomo Mitsui Financial Group and Mizuho Financial Group Inc--as doing business that could possibly run afoul of new U.S. rules. A widely circulated report issued this year by a former U.S. Treasury Department official on global banks doing business with Iranian banks named the Big Three Japanese financial institutions. Spokespeople for the three Japanese banks declined to comment on the accuracy of the report, or how the law might affect their operations in Iran." (Wall Street Journal, "New U.S. Law on Iran May Hurt Japanese Firms," 7/1/2010).