Holcomb Family Foundation

Temple Hoyne Buell Foundation

Denver, CO

The Temple Hoyne Buell Foundation primarily funds early childhood education and development for children from birth to age five, along with related quality improvement and evaluation, especially in underserved communities and rural Colorado. Most grants are $10,000–$50,000, and funding is focused primarily on Colorado. It accepts unsolicited requests through its responsive grant cycles, though some targeted initiatives are by invitation.

Ima Foundation

Wichita, KS

CHC Creating Healthier Communities

Alexandria, VA

CHC supports community health and access to care, including work on mental health, food security, healthy aging, disaster relief, and services for children and underserved communities; it also distributes workplace-giving donations to charity partners. In 2025, grants ranged from $5,006 to $3.66 million, with a median of about $13,000, and its work is nationwide. Eligible nonprofit partners whose missions match a CHC Cause may apply through the Cause Impact Program; no further application details are stated.

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.

Colorado Gives Foundation

Arvada, CO

Colorado Gives Foundation funds nonprofits serving Jefferson County in areas including food security, early care and education, workforce development, housing, health and convenient neighborhoods; it also offers statewide nonprofit capacity-building support. Typical giving varies widely: its 2024 median grant was $17,814, while Thriving Jeffco Responsive Grant awards ranged from $2,500 to $100,000. It accepts applications through listed grant opportunities, but whether it accepts unsolicited requests is not stated.

Aetna Foundation Inc

Hartford, CT

Aetna Foundation supported health and wellness, access to health care, and related community needs; its 2021 grants ranged from $5,000 to $1 million, with a median of $40,000, and went to organizations across multiple states, especially in D.C. and Connecticut. Its 2021 filing was marked final, so it appears to have ended or be winding down grantmaking; that filing said there were no restrictions on who could apply and pointed applicants to its website for application materials.