There’s a new sheriff in town at Market Basket following former CEO Arthur T. Demoulas’s unceremonious removal last week.

The grocery chain’s longtime chief financial officer, Donald T. Mulligan, will now serve as its interim CEO, Market Basket’s board of directors announced Tuesday.

“Don Mulligan is the voice of consistency at Market Basket, one that our associates and customers can count on to proudly continue the same thriving culture and the ‘More For Your Dollar’ shopping experience,” board Chair Jay K. Hachigian said in a statement.

He praised Mulligan’s “exceptional business acumen” and relationship with the company’s employees, as well as his “deep understanding of the history and culture that make Market Basket so special.”

A Lowell native and 42-year Market Basket veteran,

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