PHOENIX–(BUSINESS WIRE)–Western Alliance Bancorporation (the “Company”) today announced that it has been informed by Jefferies Financial Group (“Jefferies”) that payments of $126.4 million owed to Western Alliance Bank (“Bank”) pursuant to a forbearance agreement will not be paid as agreed. Earlier this morning, the Bank and its Collateral Agent filed a Complaint in New York Supreme Court against Jefferies, Leucadia Asset Management LLC (“LAM”), and affiliates (collectively, “Defendants”) all