Probably something they like to keep a bit discrete as there doesn't appear to be much readily available info on-line to share. But this older update from a since disconnected JSOnline story still appears pasted on a few other sites. I don't recall stories of any other investment changes over the past year, so looks like Mark's ownership group controls at least 75% of the team, but I can't help you with his percentage within that group. "L.A.-based Ares Management co-Founder & Managing Partner Tony Ressler and Leonard Green & Partners Managing Partner Jonathan Sokoloff were announced as investors in the Brewers' ownership group, "bringing to 12 the number of" identified investors in the team, according to Don Walker of the MILWAUKEE JOURNAL SENTINEL. Team officials said that "well over 75% of ownership of the team is controlled by a subset of the ownership group" headed by Principal Owner Mark Attanasio. Walker notes Attanasio is joined in that subset by the Lubar family of Milwaukee and "four former owners in the Selig ownership group who rolled over their holdings" -- Chicago-based Madison Dearborn Chair & CEO John Canning Jr., Marcus Corp. Chair & CEO Stephen Marcus, Hometown Property Management President and AHL Milwaukee Admirals Owner Harris Turer and Uihlein/Wilson Architects President David Uihlein Jr. Ressler's brother, CIM Group Principal & Founder Richard Ressler, is also a member of the ownership group (MILWAUKEE JOURNAL SENTINEL, 4/27)."