Both the executives were criticised for their negligence that resulted in a widening insider trading scandal and also over the loss-making overseas businesses following the Lehman acquisition in 2008.
Regulators had slammed the bank and its executives over involvement in leakage of sensitive, non-public information related to three new share issues in 2010, as reported by the Financial Times.
The bank took the step after being severely criticised for being slow to respond to an investigation into insider trading practices that had grown rampant in the Tokyo market.
The resignation of the two key executives will adversely affect Nomura’s ambition of international expansion amid economic turmoil around the globe.
Japan’s largest investment bank by revenues has tried managing its losses through a $1.2bn cost-cutting exercise launched late last year.
The bank’s European and Asian operations are expected to have posted another loss in the three months through June.
