Jack Lewars is the founder of Ultra Philanthropy, an independent advisory that helps major donors give for maximum impact. He advises donors giving up to nine figures a year, and is Chair of Trustees at High Impact Athletes. He writes the Funding Anthropalypse newsletter, commenting on the expected wave of AI philanthropy in 2027 and beyond.
He is also the Fund Manager of the Ultra Philanthropy Mid-stage Global Health Fund, which makes strategic grants and offers hands-on technical and management assistance to bring high impact global health projects to scale.