The board of Market Basket voted unanimously Tuesday to remove Arthur Demoulas as president and CEO, board chair Jay Hachigian said Wednesday.

“Despite extensive efforts by the Board and Mr. Demoulas to come to terms, the mediation was not successful,” Hachigian said in a statement. “The Market Basket Board late yesterday voted unanimously to remove Arthur T. Demoulas as President and CEO of Market Basket.”

In a statement, Demoulas’ spokesperson, Justine Griffin, said the fired executive is “deeply disappointed” that mediation efforts failed.

“Over time, it became clear to us that this was not a good faith effort by the board or his sisters to reach agreement on the issues created by their abrupt actions placing Arthur T. Demoulas, his family and members of his senior management team on

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