What Happened to Arthur T. Demoulas CEO Removal?

The saga of Arthur T. Demoulas's removal as CEO of Market Basket is deeply rooted in a protracted family feud that has spanned decades, pitting cousins Arthur T. Demoulas and Arthur S. Demoulas against each other, and more recently, Arthur T. against his sisters. The initial major conflict culminated in 2014 when Arthur T. Demoulas was fired by a board controlled by Arthur S. Demoulas. This decision triggered an unprecedented outpouring of support from Market Basket employees and loyal customers, who staged widespread protests, walkouts, and boycotts that severely impacted the company's operations and sales for weeks.

The protests, which saw thousands of employees, including warehouse workers and truck drivers, refuse to work, effectively crippled the supermarket chain. Shelves went bare, and the public pressure, coupled with intervention from state governors, ultimately forced a resolution. In August 2014, Arthur T. Demoulas, backed by his sisters, successfully negotiated a deal to buy out the 50.5% stake owned by Arthur S. Demoulas's side of the family for approximately $1.6 billion, regaining control and returning as CEO.

Under Arthur T.'s leadership, Market Basket continued its model of low prices and employee profit-sharing, expanding its footprint across New England. However, the family tensions resurfaced. In May 2025, the Market Basket board of directors, now controlled by Arthur T.'s three sisters who collectively own about 60% of the company, suspended him and several allies. The board cited "credible allegations" that Demoulas was planning a work stoppage in retaliation for requests for greater collaboration and oversight, and for allegedly resisting a succession plan. Demoulas's spokesperson, Justine Griffin, characterized these actions as a "farcical cover for a hostile takeover."

Following failed mediation efforts, the board unanimously voted to terminate Arthur T. Demoulas as President and CEO on September 10, 2025. Donald T. Mulligan, a long-time CFO, was appointed interim CEO shortly thereafter. Demoulas subsequently filed a lawsuit in Delaware's Court of Chancery, seeking reinstatement and arguing that the board acted in bad faith. However, on April 20, 2026, Vice Chancellor J. Travis Laster ruled against Arthur T. Demoulas. The judge found that Demoulas failed to prove the board acted in bad faith and that their decision to suspend and terminate him was valid, citing his "imperious leader" style and resistance to board oversight.

As of April 21, 2026, Arthur T. Demoulas is no longer CEO of Market Basket, and his legal challenge for reinstatement has been denied. He remains a significant shareholder in the company. Market Basket, with approximately 90 locations across New Hampshire, Massachusetts, Maine, and Rhode Island, continues to operate under its established business model, with plans for further expansion, including a new super-site in Seekonk, Massachusetts, and a fourth Maine location in Scarborough, both slated for opening in Fall 2026.