Hilda E & Julius W Schweinsberg

Enterprise Holdings Foundation

Saint Louis, MO

The Enterprise Holdings Foundation supports charitable and educational nonprofits in communities where Enterprise Mobility operates, focusing on health, education, arts, and disaster relief; applicants must be actively supported by an Enterprise Mobility team member, spouse, or domestic partner. Giving varies widely: it reported 9,499 grants in 2024, but its 2025 filing showed one grant of $101.4 million, so that amount is not a typical award. Applications are accepted at any time through eligible Enterprise-affiliated applicants; the Foundation does not limit giving to preselected organizations.

Middendorf Foundation Inc

Baltimore, MD

Middendorf Foundation supports education, healthcare, social services, arts and culture, the environment, and historic preservation, with a priority on one-time capital projects for established nonprofits serving Baltimore City or Baltimore County. Recent grant figures vary: its 2025 IRS filing reports a median grant of about $1.38 million, largely reflecting a very large donor-advised-fund grant; unsolicited requests are not explicitly addressed.

USTAMid-Atlantic Foundation

Arlington, VA

The USTA Mid-Atlantic Foundation champions tennis for healthier lives and communities, making the sport accessible to all in the Mid-Atlantic.

R Scott Rosenberger Charitable Foundation Inc

Baltimore, MD

Kpipp Inc

Baltimore, MD

Hochwarth Schonfeld Charitable

Lutherville, MD

The Luster Foundation FKA

Mill Valley, CA

Powell Foundation

Lincolnwood, IL

The Powell Foundation primarily funds animal-welfare organizations, with some grants to groups whose work also includes literacy, disability services, and community quality of life. Its 2025 grants ranged from $2,000 to $15,000, with a median of $8,000, and went to organizations in several states, including Colorado, Illinois, Oregon, Utah, and Massachusetts. It gives only to preselected charitable organizations and does not accept unsolicited requests.

Arthur H Korn Charitable Remainder Unitrust

Annapolis, MD

The trust funded 501(c)(3) charities focused on humane animal care, support, and placement, with 2024 grants typically around $191,800 (median; range $10,000–$191,800) to organizations in Maryland, Illinois, Virginia, Oklahoma, and Pennsylvania. It accepted only preselected organizations and did not accept unsolicited requests; the trust has since terminated and distributed its remaining assets.

The Muse Foundation Inc

Annapolis, MD

The Muse Foundation funded a varied set of organizations, including a fraternity foundation, children’s health care, and Chesapeake Bay conservation; its 2024 grants totaled $39,000 across 18 awards, though it reported no grants in 2025. Grantees are based in several states, and the profile does not state a geographic restriction. The foundation’s filing says to contact Kenneth H. Roberts with a resume form; it lists no deadlines and says there are no award restrictions or limitations.

Whitney Charitable Foundation

Hamilton, NJ

The Whitney Charitable Foundation supports animal welfare, religious and community services, and youth education, with 2025 grants ranging from $2,680 to $6,000 and a median of $3,750. It funds organizations in multiple states, including Florida, California, Washington, Maryland, and Utah; the filing lists a contact for requests and does not say whether unsolicited requests are accepted.

The Susan Pechter Charitable Foundation

Woodbridge, CT