Program Leadership

Claudio Martinez »

Executive Director, Horizons Greater Boston

Claudio Martinez is a respected civic leader and nonprofit senior executive who has worked to advance education, culture, and economic development in Boston and Massachusetts for more than 25 years, through nonprofit, private, and public leadership roles.

Kerry Pottinger »

Executive Director, Horizons at Mattahunt Elementary School

Bringing a wealth of experience in community engagement, Kerry has played an instrumental role in expanding access to quality summer programming for children from diverse backgrounds.

Haris Kuljancic »

Executive Director, Horizons at Dedham Country Day School

Haris’ dedication to the non-profit sector began in 2006 as a cohort 1 Scholar at Hartford Youth Scholars.

Maricarmen Sullivan »

Executive Director, Horizons at Lexington Montessori School

For the past 14 years, Maricarmen has been an integral part of the Lexington-Montessori (LMS) community, wearing various hats throughout her tenure.