Old Line Bancshares (OLBK) in Bowie, Md., has appointed a chief operating officer to help manage its recent growth.

Mark Semanie has been named COO and interim chief financial officer, the $1.1 billion-asset company said Monday. Old Line had not had a COO previously, Semanie said. The former CFO, Christine Rush, announced her retirement in March.

Semanie joined Old Line at the end of January from Carrollton Bank in Columbia, Md., where he was CFO. Carrollton was sold this year to Jefferson Bancorp in Lutherville, Md.

Old Line decided to bring on a COO after tripling in size in slightly more than two years, Semanie said.

Also on Monday, Old Line announced the completion of its $54.7 million cash-and-stock purchase of WSB Holdings, also based in Bowie. The companies had announced the deal in September. Old Line ranks No. 3 among Maryland banks with 23 branches.

Moreover, it announced three other hires Monday: Thomas Mee as head of loan production for Montgomery and Howard counties, Kevin Frere as senior vice president of loan production for Calvert and St. Mary's counties and David Seyler as director of cash management and corporate deposit services.

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