Chuck Casassa Named President of Market Basket Supermarkets

The board of directors at Market Basket appointed Chuck Casassa as the new president on Thursday.

Casassa replaces Arthur T. Demoulas, who was fired last year. Chief financial officer Don Mulligan served as interim president following Demoulas’ termination.

Mulligan is retiring after 43 years with Demoulas Super Markets, the parent company of Market Basket. He started under Demoulas’ father and became CFO in 1999.

This leadership change follows a legal conflict in Delaware Chancery Court between Demoulas and the board. The board accused Demoulas of failing to share budgetary details and causing dissent to secure his position.

Demoulas argues that the company performed well under his leadership. He claims he is being sidelined due to disputes with his three sisters, who control over 60 percent of the company, while Demoulas holds 28 percent.

Last week, Judge Travis Laster sided with the board, stating the board members were within their rights to dismiss Demoulas. This decision followed a three-day trial where Demoulas sought reinstatement as CEO.

The tension between Demoulas and the board escalated last May, leading to Demoulas’ suspension to address rumors of potential work disruptions. No major walkouts occurred this time.

Casassa has been with Market Basket for over 50 years, starting as a bagger at age 14. He was promoted to director of operations in July 2025.

The board did not announce a chief executive alongside Casassa’s appointment. Board chair Jay Hachigian stated, “Mr. Casassa embodies the very best of Market Basket.”