Citizens Commercial Banking named Jim Malz as the new top executive in its Midwest region. Malz is based in Cleveland, joining Citizens after 18 years with JPMorgan Chase & Co. He replaces Joseph Giampetroni, who is leaving to find other “opportunities,” according to a news release. Malz is also becoming Ohio president, succeeding Ralph Della Ratta, who will remain on as a leader of Citizens Capital Markets Inc.’s mergers and acquisitions advisory business, the release said. Citizens’ Midwest region encompasses Michigan, Ohio and greater Chicago. Citizens’ Michigan president is Rick Hampson, based in Southfield. Malz previously served Chase as head of its middle market banking and specialized industries business. He was also the bank’s market president for Ohio and western Pennsylvania. Before Chase, Malz was with Bank One Corp., which was acquired by JPMorgan Chase & Co. in 2004. Citizens Commercial Banking is a brand under Rhode Island-based Citizens Financial Group Inc., which has approximately $161 billion in assets. Its commercial arm serves corporate, institutional and nonprofit customers with various banking services including lending and deposits, treasury services and asset finance. In consumer banking, Citizens has 2,900 ATMs and 1,100 branches in New England, the Midwest and Mid-Atlantic. It announced Wednesday it is expanding to the western U.S. It has 650 employees in Michigan and 85 branches. —Crain’s Cleveland Business contributed to this report.