Sharon Callahan (She/Her)

Member at Large

Sharon Callahan is an executive coach, strategic advisor, and board director with deep experience in healthcare communications and LGBTQ+ advocacy. She brings a former CEO’s perspective to leadership, organizational growth, and the relationship between business performance and workplace culture. Through her company, What’s Possible, Inc., Sharon helps CEOs and leadership teams navigate growth, strengthen collaboration, and lead through change. Sharon previously served as CEO of TBWA/World Health and The CDM Group, two leading healthcare communications agencies. As Chief Client Officer of Omnicom Health Group, she led relationships with some of the world’s largest healthcare companies. Her nonprofit leadership includes serving as vice chair of GLAAD and chair of the LGBTQ+ Victory Fund. These roles reflect her longstanding commitment to LGBTQ+ visibility, representation, and equality. She currently serves as a trustee of Wheaton College in Massachusetts and a board member of Lily House. Lily House provides compassionate end-of-life care at no cost and helps the Cape Cod community meet death with less fear and more love. Sharon teaches in the School of Visual Arts’ master’s program in branding. In 2025, she was inducted into the Medical Advertising Hall of Fame. As a member of the LGBTQ+ community, Sharon brings a personal commitment to SAGE’s mission. She believes older adults deserve to age with dignity, remain connected to the community, and have their lives and contributions honored. Sharon lives in Provincetown, Massachusetts, and is the mother of four wonderful children.