OuR TEAM

Who We Are

DAVE MIXER

Vice President of the Board of Mill Town Foundation and Trimix Foundation

Dave founded the Mill Town Foundation in the fall of 2018 with the goal and vision of using philanthropic funding to improve the quality of life in Pittsfield, Massachusetts, and the broader region of the Berkshires. Dave and his wife Gail have contributed substantial personal capital to fund Mill Town Foundation’s initial mission by funding all overhead costs and via contributions to a myriad of programs and projects in the region. Dave is a lifelong philanthropist, beginning with the Mixer’s founding of the Trimix Foundation in 1994. Trimix is a private foundation which has supported causes including early childhood education, affordable housing, health initiatives, community re-development, and support of the arts in Rhode Island, Florida, and the Berkshires of Western Massachusetts. Since inception, Trimix has contributed over $60 million dollars of philanthropic capital to community causes across the country.

Dave is the Vice President of the Board of Mill Town Foundation and Trimix Foundation.

TIM BURKE

Tim oversees the day-to-day operations and strategy of Mill Town Foundation. Tim has worked with the Mixer family since 2016 and was part of the founding of Mill Town Foundation in 2018. Since that time, Tim has worked to support the strategy of the Foundation and has partnered with dozens of community organizations to pursue projects, programs, and initiatives to drive impact in the region. He represented Mill Town Foundation on the initial Steering Committee of EforAll Berkshires, leading an effort to launch a local chapter in the region. Tim is currently a Trustee of Berkshire Health Systems; a Board Director of the Brien Center; and a past director of 18 Degrees, the Berkshire Family YMCA, and the Pittsfield Catholic Youth Center through their merger with the YMCA.

ANDY WRBA

Program Director

Andy Wrba is the Program Director at Mill Town Foundation, where he leads the design and implementation of the foundation’s place-based initiatives in Pittsfield and across the Berkshires. His work focuses on advancing programs in arts and culture, education, outdoor recreation, and leadership development, with an emphasis on collaboration, community impact, and long-term sustainability. 
 
In his role, Andy oversees the development and growth of Mill Town Foundation’s original programming and grantmaking portfolio, manages cross-sector collaborations, and stewards community partnerships. He plays a key role in shaping organizational strategy as the foundation expands its public-facing work and has been instrumental in scaling signature programs and initiatives, building community-driven platforms, and guiding the foundation through periods of growth and evolution. 
 
Born and raised in Pittsfield, Andy brings a deep sense of place and personal commitment to his work. His approach to philanthropy and program leadership is grounded in community, dignity, creativity, and integrity, with a strong belief in investing in people as a catalyst for lasting change. Beyond his work with Mill Town, Andy is an active musician and avid soccer player who is proud to call the Berkshires home with his family.

LILIANA ATANACIO

Grant & Program Administrator

Liliana is the Grant and Program Administrator for Mill Town Foundation. She supports the daily administrative functions and the programmatic operations for the foundation. Passionate about community involvement, Liliana is the co-founder of Latinas413, a 501(c)(3) nonprofit organization advocating for Latina representation in Berkshire County. She was recognized with the prestigious “29 Who Shine” Award by the Massachusetts Department of Higher Education in 2018. Her achievements also include organizing the first Hackathon at BCC, founding the “Eleanore Velez MSSO” Scholarship, and winning the Southern Berkshire Chamber’s 2025 Women in Leadership Equity & Justice Advocate Award.

Please fill out the contact form for potential collaboration or partnership opportunities

Please fill out the contact form for potential collaboration or partnership opportunities

CONTACT FORM

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Please fill out the contact form for potential collaboration or partnership opportunities.