Our Team

Christina Mattison

Founder, President & CEO

Christina Mattison is the founding President and CEO of Mattison Advisors, a philanthropy management firm offering innovative solutions to maximize your charitable giving, brand, engagement and impact through strategic philanthropy.

Koren Bedeau, Ph.D.

Chief Strategic Lead

Dr. Koren Bedeau leverages her expertise to drive the overall strategy, growth, and excellence for MA in partnership with the CEO. She has a track record in academic leadership, strategy, and engagement and is compassionate about developing organizational leadership capacity and maximizing results.

Deidre Thomas

Senior Consultant

Deidre Thomas is a philanthropic professional with arts, cultural, and policy experience. She most recently served as the Director of Grants at the Houston Arts Alliance, where she led efforts to transform the grantmaking strategies to the arts and culture sector on behalf of the City of Houston.

Colleen Briner

Senior Consultant

Colleen Briner, Senior Advisor, is a passionate builder of products, teams, and change. Skilled at pulling the pieces together across functions, within organizations, and through partnerships, Colleen has over two decades in leadership roles for nonprofits, startups, and small businesses aiming to make a social impact.