Twaddell Charitable Trust

The Enrico & Sandra Di Portanova

Houston, TX

The foundation supports Texas organizations working in areas such as disability services, housing, student support, basic needs, child welfare, and the arts. Its 2024 grants ranged from $500 to $29,000, with a median of $15,000. It funds only preselected charities and does not accept unsolicited requests.

Dudley Family Foundation

Scottsdale, AZ

The Dudley Family Foundation supports a varied range of charitable organizations, including health, education, arts, and community-service groups, with 2024 grants concentrated in Texas, Virginia, and Indiana and others in several states. Its 2024 grants ranged from $500 to $500,000, with a median of $10,000. It does not accept unsolicited requests and gives only to preselected organizations.

Huffington Foundation

Houston, TX

The Huffington Foundation funds medical research and education, children’s programs, environmental preservation, housing, and other community services, with most 2024 grant dollars going to Texas and the rest to Colorado. Its 2024 grants ranged from $1,500 to $2.35 million, with a median of $25,000. It gives only to preselected organizations and does not accept unsolicited requests.

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.

Skyward Specialty Insurance Foundation

Houston, TX

TC Energy Foundation

Houston, TX

The TC Energy Foundation supported charities in safety, education, the environment, and resilient communities, but it ceased grantmaking after distributing its assets in 2023. Its 2023 grants totaled $1.29 million across seven recipients, with no typical grant size established; it states that it funds only preselected organizations and does not accept unsolicited requests.

Durkin Legacy Fund

Houston, TX

The William S Anheuser Family

Chesterfield, MO

The William S Anheuser Family funds charitable organizations in Missouri, with recent grants supporting arts, history, LGBTQIA-related work, and other causes. In 2024, grants ranged from $2,000 to $50,000, with a median of $5,000. It gives only to preselected organizations and does not accept unsolicited funding requests.

The Nathan J Klein Fund

Houston, TX

The Nathan J Klein Fund supports tax-exempt charities, with recent grants benefiting Jewish community, family, senior-care, and Holocaust education organizations, among others. In 2025, grants ranged from $1,900 to $80,000, with a median of $6,100; 98% of grant dollars went to Texas and 2% to New York. The filing does not state whether it accepts unsolicited requests.

Elva Johnston Foundation

Houston, TX

The Elva Johnston Foundation supports a varied range of charitable causes, including education, child and family services, health, and community programs. Its 2025 grants ranged from $500 to $10,000, with a median of $2,000, and mostly went to Texas organizations, with additional grants in Tennessee, Pennsylvania, and Kentucky. It funds only preselected organizations and does not accept unsolicited requests.

Magnolia Plantation Foundation

Charleston, SC

The Magnolia Plantation Foundation supports organizations working in historic preservation, conservation, wildlife care, education, and cultural programming, with most of its 2024 giving going to South Carolina. Its 2024 grants ranged from $500 to $9,000, with a median of $1,000. It gives only to preselected organizations and does not accept unsolicited requests.

Jacob and Terese Hershey Foundation

Houston, TX

The Jacob and Terese Hershey Foundation funds environmental protection and conservation, public health and reproductive rights, parks and open space, environmental education, animal welfare, and related civic engagement. Its 2024 grants ranged from $500 to $455,000, with a median of $30,000; it focuses on greater Houston, central Texas, and statewide work, while out-of-state projects are accepted by invitation only. It accepts unsolicited requests through an online Letter of Inquiry process, with LOIs accepted year-round.