In September 2004, he reached a deal, on behalf of an investment group, to purchase the Brewers from the family of MLB commissionerBud Selig for an estimated US$223 million.[3] The deal was approved by MLB in 2005.[4]
In September 2004, the Milwaukee Brewers and the Selig family announced that they had accepted Attanasio's bid to buy the team.[11]
In 2023, the Brewers reached an agreement with Wisconsin lawmakers for taxpayers to subsidize renovations of American Family Field, the Brewers stadium, to the tune of nearly half a billion dollars.[12] In the lead-up to the agreement, Brewers officials threatened to leave Milwaukee unless the team received taxpayer money.[13]
Norwich City
In August 2022, it was announced that Attanasio would become a director of Norwich City, an act Attanasio said was his proudest achievement.[14] It was later reported that he would be purchasing an 18% stake in the club from Michael Foulger under the business group Norfolk Holdings.[15] In April 2024, Attanasio’s stake in the club was increased to 40.4% following EFL ratification, making him one of the joint majority shareholders alongside Delia Smith and Michael Wynn-Jones.[1]
On 23 October 2024, Attanasio & Norfolk Holdings became the sole majority shareholders of the club, after the clubs other shareholders approved a deal that saw their stake in the club increase to 85% and decrease Smith & Wynn-Jones stake to 10%. As part of the deal, Attanasio appointed businessman Richard Ressler to the board as a club director, while Smith & Wynn-Jones agreed to step down from their roles as club directors to become honorary life presidents.[16]
Mark is the brother of television writer Paul Attanasio.[19] He is married to Deborah (née Kaplan) and has two sons, Dan and Mike. His eldest son Dan and his rock band, Pan Am, performed at Summerfest 2008 in Milwaukee, Wisconsin.[20]