Weeden Foundation

The Weeden Foundation operates as a tightly-run family foundation with a single, non-negotiable organizing principle: biodiversity protection. Established in 1963 by Frank Weeden and based in Bedford Hills, NY, it is governed by a family board — Leslie Weeden (President), John Weeden (Secretary), Robert Weeden and Norman Weeden (Directors), Barbara Daugherty (Vice President), and Nick Leibowitz (Treasurer) — all serving without compensation. This structure means there are no professional program officers to cultivate; alignment with the family's conservation values is the primary evaluation criterion.

The foundation's giving philosophy is unusually coherent for its size. Every one of its eleven named program areas — Alaska, California Floristic Province, Montana, Chilean Patagonia, Bird Conservation, Systemic Support, Global Biodiversity, Environmental Education, Marine Wildlife Conservation, Sustainable Consumption, and International Population — ultimately connects back to biodiversity protection. The foundation pioneered conservation finance: it financed the world's first debt-for-nature swap in Bolivia in 1992, a model now replicated globally, and co-founded the Quick Response Fund for Nature in 2015 to enable rapid land acquisition at critical biodiversity sites. This history reflects a board that thinks about conservation tools strategically, not just philanthropically.

With $37.7 million in assets and approximately $2 million in annual giving (FY2024), the foundation distributes across a broad portfolio of grants in the $10,000-$30,000 range with no multi-year awards. This positions Weeden as a supplemental or catalytic funder rather than a lead revenue source. Organizations that frame their ask as targeted support for a discrete campaign or initiative — rather than general operating support — will find it more receptive.

The relationship progression for new applicants begins with a Letter of Inquiry through grantinterface.com using the 'New Applicants' form, due 4 weeks before the full proposal deadline (which is 8 weeks before the board meeting). This means effective lead time for new applicants is approximately 12 weeks before the board meeting. The board meets three times per year — typically March, June/July, and October.

First-time applicants should identify which specific program area they fit best and address that geography and focus explicitly. Geographic strength is concentrated in California (23 identified grantees), Washington (11), Montana (9), Oregon (7), and internationally in Chile, Africa, and Asia. Returning grantees skip the LOI step entirely — a meaningful competitive advantage that makes investing in a long-term relationship over multiple small grants a sound strategy.

The Weeden Foundation's annual grants paid have ranged from $1.5 million (FY2020) to $3.3 million (FY2021) over the past decade, with a normalized range of $1.7-$2.6 million when excluding the FY2021 post-estate-gift distribution. In FY2024, grants paid totaled $2.0 million against total assets of $37.7 million — a payout rate of approximately 5.3%, slightly above the 5% private foundation minimum. Net investment income of $3.0 million in FY2024 comfortably covers annual giving, suggesting distributions at current levels are sustainable.

Assets have held steady in the $37-40 million range since a significant estate gift (approximately $10.2 million in contributions received in FY2020, believed to be related to trustee John D. Weeden) boosted the endowment from $27.1 million (FY2019) to $39.2 million (FY2020). The FY2021 spike in giving ($3.28 million paid) reflected deliberate distribution of a portion of those estate proceeds. Since then, annual giving has normalized to the $1.7-2.0 million range.

At the individual grant level, the most common award in the identified grantee data is $25,000 — the modal grant size, reflected across dozens of organizations including Wildlands Network, American Bird Conservancy, Columbia Land Trust, Population Media Center, Sea Shepherd Conservation Society, Stand Earth, Greater Yellowstone Coalition, and Panthera. A subset of grantees with longer organizational relationships receive higher awards: RESOLVE ($52,000), Center for Biological Diversity ($50,000), National Wildlife Federation ($50,000), and Pacific Forest Trust ($42,000). The confirmed floor in the top-50 grantee data is $21,000 (Peregrine Fund, Sea Turtle Conservancy). Average grant size across the full dataset is approximately $53,000, but this is skewed by a large aggregated line item; the practical per-grant average is closer to the $20,000-$25,000 range per Terra Viva Grants' independent estimate.

Program-area breakdown from the grantee list: Bird Conservation draws awards to American Bird Conservancy, Peregrine Fund, Friends of BirdLife International, Manomet, Forests for Monarchs, and Canopy. Land/Wildlife Corridors covers Pacific Forest Trust, Wildlands Network, Center for Large Landscape Conservation, Greater Yellowstone Coalition, and Vital Ground. Chilean Patagonia includes Puelo Patagonia, Futaleufu Riverkeeper, Fundación Tierra Austral, and Valdivia Legal. Population and Consumption programs fund Population Media Center, The Population Institute, Environmental Paper Network, Post-Landfill Action Network, and US PIRG Education Fund.

Giving tracks investment income closely: in FY2013 (investment income $3.7M), grants paid were $2.5M; in the weak FY2022 (investment income $609K), grants paid dropped to $1.85M. The FY2024 recovery to $3.0M investment income positions the 2025-2026 cycle for continued or modestly higher giving.

The table below compares the Weeden Foundation to four conservation and environment funders with overlapping focus areas. Peer asset and giving figures are approximate, drawn from publicly available IRS 990 filings, and should be independently verified.

Weeden occupies a distinctive middle position in the conservation funding landscape: larger and more institutionally established than micro-foundations like Shared Earth, but substantially smaller and more accessible than Turner- or Compton-scale funders. Its most critical competitive advantage for grant seekers is its open application cycle — Wilburforce, which covers overlapping Pacific Northwest and western wilderness geographies, is invitation-only, making Weeden one of the few open-access funders at this level of programmatic focus and conservation sophistication.

The foundation's population and sustainable consumption programs are unusual for a conservation funder at this asset level. Most comparable foundations in the $30-50M range focus purely on land or species protection; Weeden's willingness to fund family planning, paper market reform, and plastic reduction opens doors for organizations bridging conservation and human welfare that have no comparable open-access alternative. The $10,000-$30,000 grant ceiling reflects a deliberate choice to fund broadly across the conservation ecosystem rather than concentrate resources on flagship grantees.

The most recent public data point is the FY2024 990-PF filing (submitted November 18, 2025), which shows the Weeden Foundation maintaining stable assets at $37.7 million with $2.0 million in grants paid — an 18% increase over FY2023's $1.71 million. Net investment income recovered strongly to $3.05 million in FY2024 after a difficult FY2022 ($608,000), indicating the endowment's equity portfolio has substantially recovered from the 2022 market correction.

No leadership transitions are evident in recent filings. Leslie Weeden has served as President across multiple consecutive filing years, and the board composition — predominantly Weeden family members — has remained consistent through at least FY2024. Nick Leibowitz continues as Treasurer and is the only consistently identified non-family board member.

The Summer 2026 grant cycle represents the most concrete near-term activity visible publicly: the cycle opened March 2, 2026, with an LOI deadline of April 17, 2026, a full application deadline of May 15, 2026, and the board meeting scheduled for July 11, 2026. The Fall 2026 cycle deadlines had not been posted as of the time of this research.

The foundation's most significant programmatic innovation in the past decade remains the co-founding of the Quick Response Fund for Nature in 2015, a collaborative rapid-response vehicle enabling conservation acquisitions within days when critical land becomes available. The foundation also maintains active membership in the Nature Needs Half coalition, aligning its work with the 30x30 and 50x50 global conservation goals. No new press releases, program launches, or executive announcements were identified in web searches covering 2025-2026.

The most consequential pre-application decision is identifying the correct program area before writing a single word. The Weeden Foundation funds eleven named programs — Alaska, California Floristic Province, Montana, Chilean Patagonia, Bird Conservation, Systemic Support, Global Biodiversity, Environmental Education, Marine Wildlife Conservation, Sustainable Consumption, and International Population — and proposals that do not map cleanly to one of these are unlikely to advance past the LOI stage. Review the 'What We Fund' page on weedenfoundation.org, identify your primary program match, and lead every document with a direct, named statement of which program your work addresses.

For new applicants, the LOI is the critical gatekeeping step. It must be submitted through grantinterface.com using the designated 'New Applicants' form exactly 4 weeks before the full proposal deadline — meaning effective lead time for first-time applicants is approximately 12 weeks before the board meeting. The LOI should be concise: state the program area, the biodiversity connection, a brief description of the proposed work, and the requested amount (stay within $10,000-$30,000). Do not front-load organizational history; the board is evaluating fit, not credentials, at this stage.

The Executive Summary in the full proposal carries exceptional weight. According to the foundation's own published guidelines, it is 'the best vehicle for an organization to present the nature and intent of their project directly to the Board of Directors.' Write it assuming the board may read only the summary — every critical claim, outcome metric, and biodiversity connection must appear there. Cover both recent accomplishments and future plans; the board expects continuity, not just a description of future work.

Budget your ask carefully. The confirmed range is $10,000-$30,000 with no multi-year awards. Data from the top-50 grantee list suggests the sweet spot for established relationships is $25,000, with awards above $40,000 appearing only for long-standing grantees such as RESOLVE ($52,000), Center for Biological Diversity ($50,000), and National Wildlife Federation ($50,000). For a first-time application, request $20,000-$25,000 — demonstrate impact, build trust, and grow the relationship over successive cycles.

Areas of explicit disinterest include working landscapes, capital construction, animal rights, toxic contamination, film/video, wildlife rehabilitation, government entities, faith-based organizations, energy projects (except dam removal), universities, fellowships, and basic scientific research. Proposals that touch any of these — even peripherally — should reframe or excise those elements before submission.

The foundation runs three cycles per year. Missing one cycle is not fatal — apply to the next. Being a returning grantee eliminates the LOI requirement and gives the board institutional familiarity with your organization, making the path to a second and third grant meaningfully easier than the first.