Kroll Bond Rating Agency revised the outlook to stable from negative for all long-term ratings of Dallas-based Triumph Bancorp Inc. and subsidiary TBK Bank SSB.

The rating agency affirmed Triumph Bancorp's senior unsecured debt rating of BBB, subordinated debt rating of BBB- and short-term debt rating of K3. It also affirmed TBK Bank's deposit and senior unsecured debt ratings of BBB+, subordinated debt rating of BBB and short-term deposit and debt ratings of K2.

The stable outlook reflects stabilization in asset quality metrics of Triumph Bancorp, "specifically the reduction in its [net charge-off] ratio, which has been more in line with rated peers over the past four quarters," according to Kroll.