Chairman and Principal Owner
Mark Attanasio enters his 22nd season as chairman and principal owner of the Milwaukee Brewers.
Over the course of Attanasio’s leadership, the Brewers have been one of the National League’s most competitive teams, holding the fourth-highest winning percentage in the NL since the 2005 season (1725-1576, .523). In 2025, Milwaukee appeared in its third National League Championship Series of his tenure after posting the best record in Major League Baseball (97-65) and winning its fourth National League Central Division title in the past five years. The Brewers have the seventh-most wins in the majors since Attanasio became principal owner. Over the past nine seasons, Milwaukee has reached the postseason seven times, missing out in 2017 and 2022 by just a single game. The team holds the second-highest winning percentage in the National League since 2017 (763-594, .562), trailing only the Dodgers. The Brewers are one of only three teams to win at least 86 games in each of the past eight full seasons (not including 2020), joining the Astros and Dodgers.
For the past 22 years, Attanasio has been committed to the Brewers fan experience, and through significant investments, American Family Field has been and continues to be consistently rated as one of the best venues in all of sports. His dedication to the ballpark led to a monumental bi-partisan legislative agreement in 2023 to keep the Brewers in Milwaukee through at least 2050, which included a $150 million commitment from the organization.
Further, Attanasio has prioritized efforts to have a broad, positive impact on the Milwaukee-area community and throughout Wisconsin. Through the establishment of Brewers Community Foundation (BCF), the team’s charitable arm, and through community relations efforts year-round, the Brewers are an integral part of the fabric of the community. As a result of Attanasio’s steadfast dedication to invest in these efforts, BCF has generated more than $66 million over the past decade to support local non-profits in the areas of health, education, recreation and basic needs. Approximately 200 non-profit organizations receive funding annually through BCF’s grant process.
Attanasio remains focused on his longstanding objective to establish the organization as a champion both on and off the field, and he continues to work diligently to uphold the four cornerstone pledges he made to the Brewers and to the community when the team was purchased in 2005:
- FIELDING A PERENNIALLY COMPETITIVE TEAM
Attanasio works closely with Matt Arnold, Pat Murphy and the baseball operations and field staff in their efforts to build a sustainable pipeline of young talent that fans can count on for years to come, supplementing the team’s veteran players to field a perennially competitive roster.
The Brewers were named Organization of the Year by Baseball America in 2025, recognizing their success at the Major League level as well as in scouting, coaching and player development. Milwaukee was further represented in the league's end of season awards with Arnold and Murphy repeating as MLB Executive of the Year and National League Manager of the Year.
The 2025 roster featured contributions by players drafted or signed and developed by the organization, including pitchers Brandon Woodruff, Aaron Ashby, Jacob Misiorowski and Abner Uribe, infielder Brice Turang and outfielders Sal Frelick and Jackson Chourio. Attanasio supported Arnold and the baseball operations staff by adding key trade acquisitions during the season, including pitcher Quinn Priester and first baseman Andrew Vaughn.
In December 2023, Milwaukee signed Chourio to an eight-year contract through 2031 with club options for 2032 and 2033, an industry-record commitment for a player without any Major League experience. Chourio made his Major League debut in 2024 and has since become the youngest player in Major League history (21 years, 199 days) to produce multiple seasons of at least 20 home runs and 20 stolen bases.
The Brewers have established themselves as a premier talent-development organization and enter 2026 with the top farm system in baseball according to ESPN and The Athletic. The system features infielders Jesús Made and Luis Peña, two of the top prospects in all of baseball. That success reflects years of strategic investment in player development.
In 2024, the team opened a new academy in the Dominican Republic, a key hub for international player development. The academy complements earlier investments such as rebuilding American Family Fields of Phoenix in 2019 as well as the acquisition of the Carolina Mudcats in 2017. That affiliate is set to move into a new state-of-the-art stadium in Wilson, NC for the 2026 season and will relaunch as the Wilson Warbirds.
- DELIVERING THE BEST FAN EXPERIENCE POSSIBLE
Attanasio greatly values and appreciates the unwavering support of Brewers fans. Since 2007, the team has ranked in the top half of Major League Baseball in home attendance 16 times, exemplifying the power and passion of the Brewers fan base.
Attanasio’s commitment to the fan experience has included funding numerous enhancements at American Family Field over the years. Most recent upgrades include new scoreboards in center field and right field, LED digital displays behind home plate and along the baselines, the 3rd Street Market Hall Annex on the right field Loge Level and The Alley, Food Truck Park on the left field Loge Level.
In an effort to further the fan experience in 2026, the Brewers are adding the UW Credit Union Plaza located just beyond the outfield, adjacent to the pedestrian bridge spanning Wisconsin Highway 175/Brewers Boulevard and connecting to the parking lots. Designed as a free, open-access space for fans, the plaza will feature a beer garden, a performance stage for live entertainment, a mini golf course and a play area for families.
- REMAINING A LEADER IN THE COMMUNITY
Throughout Attanasio’s tenure with the Brewers, he has remained personally dedicated to and involved with Brewers Community Foundation (BCF).
In 2025, BCF raised more than $5.7 million to provide grants to approximately 200 local non-profits supporting healthcare, education, recreation and basic needs and provided scholarships to 28 Wisconsin-based students. As part of Brewers Buddies Tickets, more than 85,000 tickets were donated to 300 different organizations in 2025. Last season, BCF held five Drive for Charity events with fans donating pet supplies, peanut butter, school supplies, socks, hats, mittens and scarves.
Along with broadcasters Lane Grindle and Vinny Rottino and CBS 58, BCF collected 716 turkeys, 31,000 pounds of food and more than $5,400 in cash donations for Hunger Task Force as part of the 14th annual Drive Thru Food Drive at Thanksgiving.
In addition to fan support of the Foundation, all players, their families, team executives and front office staff contributed their time and/or financial resources in 2025.
- BEING AN ORGANIZATION WHERE PEOPLE WANT TO WORK, WHETHER ON THE FIELD OR BEHIND THE SCENES
Attanasio has continued to deliver on his commitment to ensuring the Brewers are one of the best places to work, not only in Greater Milwaukee, but in all of sports. Throughout his tenure as principal owner, the organization has grown as a desirable destination for some of Major League Baseball’s top players, front office personnel and business executives.
Under Attanasio’s leadership, the organization has created a culture focused on best practices and achieving excellence across all areas and departments. This includes providing all employees, including game-day staff, training and leadership development with an emphasis on embracing diversity, innovation and service to the community.
BEYOND THE BREWERS
Attanasio has been an accomplished investment management executive for more than 35 years. In addition to his role as chairman and principal owner of the Brewers, he is a managing partner of Crescent Capital Group, LP, a Los Angeles-based alternative asset management firm that he co-founded in 1991.
Attanasio holds positions on several not-for-profit boards, including the Los Angeles County Museum of Art and Harvard-Westlake School. He also has a leadership role as chairman of Major League Baseball’s Investment Committee, and he serves on the Executive Council. Additionally, he is an executive committee member of LA2028, the organizing committee for the upcoming 2028 Summer Olympic Games in Los Angeles. Attanasio is the majority shareholder of Norwich City Football Club in the English Championship League and also an investor in the Milwaukee Admirals of the American Hockey League.
He is a member of the Strategic Sports Group owners, who invested in the PGA Tour, and is on the board of Rawlings Sporting Goods, an American sports equipment manufacturing company.
Attanasio received his A.B. from Brown University and his J.D. from the Columbia University School of Law. He and his wife, Debbie, have two sons, Dan and Mike, and three grandchildren.