The Caldwell Foundation

The Caldwell Foundation (EIN: 75-6004080) is a private operating foundation established in Tyler, Texas, and tax-exempt since 1954. Its stated mission is to support charitable and educational programs by maintaining and operating the Caldwell Zoo — one of Texas's major free-admission zoos, which drew approximately 280,000 visitors in 2021. This distinction as an operating foundation is the single most important factor for any prospective applicant to understand: the foundation spends the overwhelming share of its roughly $10–12 million annual charitable disbursements on its own direct programs (zoo operations, capital improvements, conservation exhibits), not on grants to outside organizations.

External grantmaking is extremely limited and discretionary. From 2011 to 2024, the foundation paid between $2,800 and $19,200 per year in external grants — a ceiling that is orders of magnitude smaller than the foundation's $116 million asset base would suggest to a casual observer. There is no published application process, no grant portal, no deadlines, and no RFP cycle.

Organizations that have successfully received grants from The Caldwell Foundation are almost exclusively wildlife conservation nonprofits with direct thematic alignment to the zoo's animal collection and conservation mission: elephant specialists, cheetah programs, rhino foundations, jaguar projects, and zoological membership bodies. The one notable exception is a small number of Tyler-area human services organizations (Hospice of East Texas, East Texas Food Bank), each receiving a single grant of under $1,200.

First-time applicants should approach this foundation as they would an institutional board donor rather than a competitive grant program — relationship cultivation with Hayes Caldwell (President & CEO) or H.S. McArthur (Executive Chairman) is the only realistic pathway. Connecting through the Caldwell Zoo's Donor Circles program, launched in April 2025, or participating in Tyler civic networks where the Caldwell family is active (Women in Tyler, local conservation events) provides the most credible entry point. Unsolicited cold proposals have virtually no historical precedent in the grantee record.

The Caldwell Foundation's financial profile requires careful interpretation. With $116–$119 million in total assets and annual total giving of $7.5–$11.9 million, the foundation appears to be a major philanthropic actor. In reality, nearly 100% of that giving is directed internally to operating the Caldwell Zoo. External grants to independent nonprofits are a minor, discretionary line item.

External grants paid (by year): - 2023: $5,344 across ~7 awards - 2022: $5,000 across 7 awards - 2021: $5,100 across 5 awards - 2020: $8,113 across 7 awards - 2019: $5,350 - 2014: $5,000 - 2013: $5,000 - 2012: $5,000 - 2011: $2,800

The apparent 2024 spike to $19,200 is misleading: $11,000 went to Caldwell Zoo Inc itself, leaving approximately $8,200 for external conservation grantees — consistent with the historical baseline.

Typical grant size: Median $1,000, average $1,159, range $457–$2,500 for external awards. No single external organization has ever received a grant exceeding $2,500 in a single year based on available 990 data.

Program area breakdown: Conservation accounts for roughly 80% of external grants by both count and dollar value. General support to Tyler-area human services (hospice, food bank) accounts for ~20%. No arts, workforce development, housing, or education grants appear in the grantee record.

Geography: Texas-based grantees received 62% of external grants (13 of 21 tracked), followed by Virginia (3), Washington DC (2), Arizona (2), and Maryland (1) — all of which correspond to national zoological or conservation organization headquarters rather than regional geographic targeting.

Investment income context: The foundation generated $5.9 million in net investment income in 2023 and $10.2 million in 2022, supporting zoo operations that cost $10–14 million annually. Officer compensation totaled $828,224 in 2023, more than 150 times the foundation's entire external grant budget.

The following foundations were identified as asset-size peers, all holding approximately $115–117 million in assets and categorized under Philanthropy & Grantmaking (NTEE T-series).

The Caldwell Foundation is a significant outlier among its asset-size peers: unlike most comparably capitalized private foundations that maintain active grantmaking programs even if restricted, Caldwell channels virtually all disbursements into a single programmatic vehicle (the zoo) and has no open external grant cycle. The Mitchell Kapor Foundation, by contrast, maintains a structured invited-proposal process with named program areas. The Davidson and Turquoise foundations are family offices with similarly closed giving structures. Grant seekers who find The Caldwell Foundation through asset-based searches should recalibrate expectations accordingly — this is effectively an endowed operating institution, not a grantmaking foundation in the conventional sense.

The most significant recent development is the December 10, 2025 'Big Night at the Zoo' event, at which the Caldwell Foundation celebrated Founding Members of the Donor Circles initiative — a new community giving program launched in April 2025. Foundation President and CEO Hayes Caldwell presided over the unveiling of a permanent donor recognition sign at the zoo entrance and publicly cited rising operating costs and the growing importance of conservation work as motivations for the initiative. This signals that the foundation is actively building a broader donor base to share the cost of zoo operations, which has historically been borne almost entirely by foundation investment income.

On the leadership side, H.S. McArthur continues as Executive Chairman and Hayes Caldwell (E.H. Caldwell) as President & CEO, a structure that has been consistent for at least five years. R.S. Marshall previously served as Zoo President & CEO and drew separate compensation ($215,000–$301,000), reflecting the dual organizational structure between the Foundation and the Zoo operating entity.

The Caldwell family maintains high visibility in Tyler civic life. Maxine Caldwell co-chaired the Women in Tyler 2026 annual event in January 2026, and the March 2026 luncheon continued under the theme 'Women Laying the Foundation.' No new external grant programs, expanded application windows, or new focus areas were announced in 2025 or early 2026. The foundation's 990 filings for 2024 (expected to be filed in late 2025) will be the next data point confirming whether external grant budgets expanded beyond the historical $5,000–$8,000 range.

Understand what this foundation actually funds. The Caldwell Foundation is a private operating foundation — it exists primarily to run Caldwell Zoo, not to write checks to external organizations. The external grant budget is approximately $5,000–$8,000 per year in a typical year, spread across 5–7 micro-grants averaging $1,000 each. Any organization that spends more than a day preparing a formal grant application without a prior relationship is misallocating resources.

Wildlife conservation alignment is non-negotiable. Every multi-year grantee in the foundation's recorded history is a zoo, zoological society, or single-species conservation organization. If your work does not directly relate to the conservation of large mammals, zoo science, or wildlife education, there is no historical precedent for funding, regardless of your Tyler/East Texas geography.

Build a relationship through the zoo, not through paperwork. The most effective path to a discretionary grant is engagement with the Caldwell Zoo ecosystem: attending or sponsoring zoo events, joining the Donor Circles program launched in April 2025, connecting with Hayes Caldwell or H.S. McArthur through Tyler civic networks (East Texas chambers, conservation events), or partnering on an exhibit or education program.

Timing and ask size. If you do pursue a grant, align outreach to the fall/winter fiscal calendar (the foundation's fiscal year mirrors the calendar year and grants appear to be authorized in the second half of the year based on 990 reporting patterns). Ask for $1,000–$2,500 — the historical ceiling for external grants is $2,500. A $10,000 ask has no precedent for external organizations.

Frame requests around zoo mission language. Use terminology that echoes the foundation's stated mission: 'sharing the wonders of the natural world,' 'valuable resource to our community,' 'conservation work becoming more crucial.' Proposals should tie directly to species represented at Caldwell Zoo (African wildlife in particular) or support zoo education mission replication.

Do not cold-submit. There is no grant portal, no online application, and no published deadline. Reaching out by email to the foundation address (info@thecaldwellfoundation.org) with a brief two-paragraph letter of inquiry referencing a specific conservation alignment is the appropriate first contact.