NEW YORK--(BUSINESS WIRE)--Kroll Bond Rating Agency (KBRA) has assigned a senior unsecured debt rating of BBB, subordinated debt rating of BBB-, and short-term rating of K3 to Atlantic Capital Bancshares, Inc. (“ACBI”, “Atlantic Capital”, or “the Company”) a bank holding company headquartered in Atlanta, Georgia. In addition, KBRA has assigned a senior unsecured debt/deposit rating of BBB+ and short-term rating of K2 to its subsidiary, Atlantic Capital Bank (“the Bank”). The outlook on all rati