Kristen Cavallo, president of Mullen Lowe's Boston office, is stepping down.

A spokesman confirmed Ms. Cavallo's news and noted that she is moving away from the position for personal matters. She will remain with the agency as an employee working on client relations and talent. The agency is in the midst of finding her replacement.

Ms. Cavallo was named Mullen Lowe Boston's president in March 2014, just a few months after Alex Leikikh was named CEO of the shop. She had been chief strategy officer of the Boston office previously. Prior to Mullen Lowe, she was at Martin Agency until 2011, where she was senior VP-planning and development. She spent nearly a decade at Martin.

The spokesman said Ms. Cavallo's move has nothing to do with the recent merger of Interpublic siblings Mullen and Lowe, which happened in May. Mr. Leikikh was named worldwide CEO of the newly merged entity. Following the merger, former Ogilvy Chicago exec Lee Newman was appointed U.S. CEO of Mullen Lowe.

Also just after the merger, Mullen was named the new agency for Royal Caribbean after a review.