Tarbell Family Foundation

Tarbell Family Foundation operates unlike most institutions grant seekers research — it is a closely held family vehicle administered through Foundation Source (the (800) 839-1754 number and "% Foundation Source" address at 501 Silverside Rd, Wilmington, DE are Foundation Source's back-office signatures, not a program office), run by three unpaid sibling trustees: Harry Tarbell III (Orinda, CA), James Tarbell (Caspar, CA), and Patricia Tarbell Leiser (Vacaville, CA). Founded in 1993 by their father Harry Tarbell, an early cellular-telephone industry figure in the Pacific Northwest and University of Oregon alumnus, the foundation's giving is a direct extension of the trustees' personal geography, alma maters, and family history rather than a published thematic mandate. Its FY2024 Form 990-PF states it makes contributions only to preselected organizations, and Granted's database records application_instructions as "__none__" — there is no LOI portal, RFP cycle, or published funding-priorities document. This is not a foundation to cold-pitch.

The realistic path in is relational: check whether your organization sits inside one of four clusters this family already funds. (1) The Mendocino coast/Caspar, CA area where James Tarbell lives — volunteer fire departments, land trusts, and arts groups. (2) Central Oregon (Bend/Sisters) and University of Oregon-affiliated causes reflecting the founder's roots. (3) Middle Eastern studies and Islamic art programs tied to Patricia Leiser's scholarly connections (her husband Gary Leiser is a historian of the medieval Middle East), concentrated at Portland State University and Willamette University's Hallie Ford Museum. (4) Palestinian humanitarian and advocacy causes — Middle East Children's Alliance, UNRWA USA, United Palestinian Appeal, Jewish Voice for Peace. Organizations outside these four lanes have essentially no history of receiving support here, regardless of proposal quality.

For nonprofits with an existing tie — alumni status, board overlap, or geographic proximity to Orinda, Caspar, or Vacaville, CA, or Bend, OR — the practical approach is a short, personal letter to a trustee via Foundation Source referencing the specific shared connection, not a generic proposal packet. First-time cold applicants without one of these ties should expect no response: the foundation's modest size ($12.5M in assets) and all-volunteer trusteeship (only ~2 hours/week of disclosed involvement) leave no capacity to evaluate unsolicited requests.

Tarbell Family Foundation's IRS filings show a small, steady grantmaking program. Total assets have held in a narrow $11.3M-$13.1M band across the last decade (FY2024: $12,524,139), funded almost entirely by investment income ($737,974 in FY2024) rather than new contributions — the foundation has taken in essentially no outside gifts since a single $9,342,349 contribution in FY2012. Annual grants paid have ranged from $324,000 (FY2012) to $899,000 (FY2022), settling at $731,500 in FY2024. Payout as a share of assets ran 5.8%-8.8% over 2019-2024 (FY2024: 5.84%; FY2022 peak: 8.77%), consistently above the IRS's 5% minimum-distribution requirement for private foundations.

At the individual-grant level, Granted's dataset of 614 tracked grants totaling $3,419,500 shows an average of $5,569, while the foundation's own reported typical grant size (drawn from its most recent 990-PF, n=153) shows a median of just $2,000 against an average of $5,229 — the bulk of checks are small, general-purpose gifts in the $250-$5,000 range, while a handful of large, relationship-driven grants pull the average up. Grant size in the most recent filing year ranges from $500 to $70,000, and has historically reached $90,000 in single checks to top-tier recipients.

Geographically, California dominates with 307 of 614 tracked grants (50%), followed by Oregon at 114 (19%) and Washington, DC at 46 (7%); Massachusetts (26), New York (22), and Pennsylvania (19) reflect East Coast school and university-endowment gifts. By cumulative dollars, the largest relationships are Stoneleigh-Burnham School ($440,000/12 grants), Portland State University Foundation ($159,000/13 grants — largely the Leiser Middle Eastern Studies scholarship and library endowments), Caspar Community ($135,000/6 grants, gorse eradication in James Tarbell's hometown), Middle East Children's Alliance ($130,000/4 grants), and Shawl-Anderson Modern Dance Center ($127,000/9 grants for the Dana Lawton Dance Company). No single program area exceeds roughly 15% of total giving — funding spreads across education, arts, environment/land trusts, volunteer fire departments, and Middle East-focused causes.

Granted's database returned no matched peer foundations for Tarbell — its broad "Community Development" classification doesn't map cleanly to its actual pattern of family-directed, multi-cause giving. The table below benchmarks it instead against IRS Form 990-PF norms and its own self-reported practice:

Tarbell's 5.8%-8.8% payout range (2019-2024) runs ahead of both the IRS floor and typical small-family-foundation norms, meaning it distributes more aggressively relative to assets than many peers its size — likely because it has taken in almost no new contributions since 2012 and trustees are simply spending investment income each year rather than building an endowment. Where it diverges most sharply from peers is process: most $10-25M family foundations at least publish a one-page LOI process or accept unsolicited inquiries in a defined window. Tarbell's own 990-PF and third-party profiles (GuideStar, InfluenceWatch) confirm it does neither, making it more closed than the median foundation in its asset class.

No 2025-2026 press coverage, leadership announcements, or program changes turned up in web searches — consistent with a quiet, all-volunteer family foundation that issues no press releases. The most recent available filing is the FY2024 Form 990-PF (filed May 13, 2025), showing $731,500 in grants paid against $12,524,139 in total assets. Third-party aggregators (CauseIQ, GuideStar) show no changes in trustees, address, or administrator since the current three-sibling trustee structure — Harry Tarbell III, James Tarbell, and Patricia Tarbell Leiser — took over following founder Harry Tarbell's death. The only disclosed trustee time commitment, Patricia Leiser's roughly two hours per week, points to a low-touch, low-turnover operation unlikely to announce new initiatives.

One important clarification for grant seekers: web searches for "Tarbell" grants in 2025-2026 surface heavy coverage of the "Tarbell Fellowship" and "Tarbell Grants" program — up to $20,000 for AI-journalism reporting, a fellowship cohort running June 2026-May 2027, and a Bay Area summit scheduled August 17-21, 2026. That program belongs to the unrelated Tarbell Center for AI Journalism (tarbellcenter.org, tarbellfellowship.org), a Chicago-based investigative-journalism nonprofit with no connection to the Wilmington, DE-based Tarbell Family Foundation covered in this report beyond a shared surname. Granted's own database record for this foundation also lists "https://tarbell.org/" as its website, which is incorrect — that domain belongs to the same unaffiliated journalism outlet, not the family foundation. Grant seekers should disregard that URL and the AI-journalism program entirely when researching this foundation.

Because Tarbell Family Foundation runs no public application process, generic grant-writing advice doesn't apply — the real work is relationship-building and self-qualification before any proposal is drafted.

1. Confirm you're inside a funding cluster first. Before reaching out, check whether your organization matches one of the four patterns in its grant history: Mendocino coast/Caspar, CA nonprofits; Central Oregon (Bend/Sisters) or University of Oregon-affiliated causes; Middle Eastern studies, Islamic art, or medieval Middle East scholarship programs (especially at Portland State or Willamette University); or Palestinian humanitarian/advocacy organizations. If none apply, the data suggests this isn't a realistic prospect regardless of proposal quality.

2. Route contact through Foundation Source, not a generic inbox. All correspondence — including the (800) 839-1754 phone line and the 501 Silverside Rd, Wilmington, DE mailing address — runs through Foundation Source, the philanthropic administrative-services firm the trustees use. A cold letter to this address without a trustee's name attached is unlikely to be routed anywhere.

3. Find the human connection. Every large, multi-year grantee relationship in the record traces to a personal tie: alumni status (University of Oregon, Portland State, Willamette), a scholarly connection (Gary and Patricia Leiser's Middle Eastern studies work), or physical proximity to a trustee's town (Caspar, Orinda, Vacaville, CA). A board member, alum, or donor who already knows one of the three Tarbell trustees is worth more than any written proposal.

4. Keep the ask modest and unrestricted. The median historical grant is just $2,000, and "General & Unrestricted" is by far the most common stated purpose — this foundation favors simple, low-overhead annual gifts over multi-year restricted programs. A first ask in the $1,000-$5,000 range for general operating support mirrors what actually gets funded far more often than a large capital request.

5. Don't expect acknowledgment of unsolicited inquiries. With only about two hours per week of trustee engagement disclosed and no program staff, there is no capacity to respond to cold outreach — treat this as a multi-year relationship-building effort, not a single-cycle application.