Mary Henry

Mary Henry

Director of Business Planning and Operations

Mary joined SLG as a fellow in 2024 and SLG Certified Mentor and the Director of Business Planning and Operations in 2025.

About

Mary Henry

Mary Henry is a seasoned nonprofit leader with a career spanning 18 years in the nonprofit sector. Mary’s journey into the nonprofit world began when she established her own 501(c)(3) nonprofit dedicated to supporting caregivers by offering experiences and creating a community for children who have not yet reached school age, with a charitable arm that supports local child welfare groups, providing resources and advocating for those in need. This was the beginning of Mary's lifelong commitment to social service and community engagement.

Mary holds a degree in Human Services Administration from Notre Dame of Maryland University. Her work with St. Martin’s Episcopal School, the Archdiocese of Baltimore, the Severna Park Community Center, and a community behavioral health organization includes raising funds, strategic planning, grant writing, Board training, and relationship building.

Outside of her professional endeavors, Mary is married to Mark, and together they have two grown children, TJ and Kate. In her spare time, Mary enjoys spending time with her two dogs, boating, traveling to the beach, and staying active as a field hockey umpire.

Past experience