Chuck Casassa Becomes Market Basket New President After 50 Years

Chuck Casassa is the market basket new president after 50 years at the company. The board said Thursday he will assume the role as Donald Mulligan prepares to retire after 43 years at the grocery chain.

Casassa’s 50-year climb

50 years at Market Basket is the core of Casassa’s ascent. He started in 1976 at age 14 as a bagger, moved up to store manager in 1987, became Grocery Supervisor in 2017, and was promoted to Director of Operations in 2025.

1976 marked the start of a career that now reaches the presidency. Jay Hachigian said Casassa “embodies the very best of Market Basket,” adding that he rose “through the ranks: a front-end manager, merchandiser, assistant manager, until he was promoted to store manager in 1987.”

Mulligan exits after 43 years

43 years is the length of Mulligan’s run at the chain, and the board said he had been chief financial officer for the past 27 years before becoming interim chief executive in September 2025. Steven Collins said, “Don Mulligan has been the Chief Financial Officer of Market Basket for the past 27 years and took on the role as our Chief Executive Office in September 2025 during a difficult period for the company.”

27 years at finance and a temporary stint at the top made Mulligan the bridge between the board and the day-to-day business while the company moved through an upheaval that had already pushed Arthur T. Demoulas out in September. Collins also said, “The Board will work closely with Mr. Mulligan through his transition and we are thrilled that he has agreed to remain an advisor beyond his transition.”

Delaware ruling and board control

The timing matters because the announcement came days after a Delaware judge ruled against Arthur T. Demoulas and called his firing valid. Market Basket, incorporated in Delaware, had announced nearly a year ago that Demoulas was being suspended from his role, and he was officially fired in September.

Nearly a year ago the board was still managing a fight that already had echoes of 2014, when Demoulas was fired by his cousin’s side of the family and later returned after a boycott and a $1.6 billion buyout. This time, the board has moved from suspension to firing to a new president drawn from inside the company’s own ranks.