Richard King Mellon Foundation

Private foundation · EIN 25-1127705 · since 1949rkmf.org·Allegheny County, Pennsylvania, United States, Westmoreland County·Updated 13 October 2026

At a glance

$117M
Annual giving, 2024 tax year
From the Form 990-PF filing
$50,000 to $550k
Grant range
From grants in the 990-PF filings
$220k
Typical grant (median)
296 grants in the latest filing
Open to applications
A mix of rolling and fixed deadlines · unsolicited applications welcome

Key takeaways

  • The Foundation funds through six programmes – conservation, economic development, economic mobility, health and well-being, organisational effectiveness and social-impact investments – so match your work to the right one; economic mobility and health and well-being focus on Allegheny and Westmoreland counties, economic development's priority is Southwestern Pennsylvania, and conservation work spans the United States.
  • About eight in ten grants to organisations fall between $50,000 and $550,000, with a median around $230,000, so a request in that range is realistic.
  • Apply through the General Application on a rolling basis, or follow the timeline in a Request for Proposals where one applies to your programme.
  • Around 70% of grant dollars went to organisations already funded in the two preceding filings, so new applicants may find the Foundation more relationship-led than open-competitive.
  • It will not fund applications on behalf of individuals, applications from outside the United States, ideas that include regranting to individuals, or lobbying, advocacy or political causes or events; within Social-Impact Investments only companies incorporated in the United States qualify, and Organizational Effectiveness is limited to organisations with an active grant or funding within the past three years.

Overview

Richard King Mellon Foundation is a US private foundation based in Ligonier, PA.

What they fund

Profile derived from the foundation's IRS Form 990-PF filings (TY2024, TY2023, TY2022) and its website, with every statement checked against those sources. Sources read on 7 October 2026.

Priority Areas

The Foundation works through six programmes: Conservation, Economic Development, Economic Mobility, Health & Well-Being, Organizational Effectiveness and Social-Impact Investments. Its conservation work protects, stewards and activates habitats and environmentally sensitive land across the United States, alongside sustainable economic development and livable communities. Economic Development seeks to strengthen Southwestern Pennsylvania through talent development, employment opportunities and community building. Economic Mobility supports pathways to opportunity for vulnerable children and young people in Allegheny and Westmoreland counties; Health & Well-Being seeks a healthy life for everyone in those counties, particularly the most vulnerable. Organizational Effectiveness builds partner organisations’ strength and agility to pursue strategic priorities. Social-Impact Investments support mission-driven for-profit companies with capital, networks and resources to address societal issues. The Foundation welcomes bold, evidence-informed proposals aligned with its strategy, with clearly defined outputs, outcomes and evaluation.

Themes

  • Conservation
  • Economic development
  • Economic mobility
  • Health and well-being
  • Organizational effectiveness
  • Social-impact investments

Geographic Focus

Allegheny County; Westmoreland County. Priority: Southwestern Pennsylvania; Western Pennsylvania; United States.

What They Don't Fund

  • Applications on behalf of individuals
  • Applications from outside the United States
  • Ideas that include regranting to individuals
  • Lobbying, advocacy, or political causes or events
  • Social-Impact Investments only: companies not incorporated in the United States
  • Organizational Effectiveness only: organizations that do not have an active grant with the Foundation and have not been funded within the past three years

How to apply

The General Application accepts proposals on a rolling basis; applicants to a Request for Proposals should follow the submission timeline in that RFP’s detailed guidance.

Application success factors

  • Repeat giving: In its TY2024 filing, 70% of its grant dollars to organisations went to organisations it had also funded in its TY2022 or TY2023 filing.
  • Grant size: Across its TY2022, TY2023 and TY2024 filings, half of its 864 grants to organisations were about $230,000 or less.

What the foundation says:

  • The Foundation gives priority to projects and programmes with clearly defined outputs, outcomes and an evaluation component.
  • The Foundation values bold ideas.
  • Successful Economic Mobility applications advance at least one of the programme’s stated outcomes.

Where grants go

From grants to organisations in the foundation’s filings for tax years 2022–2024.

Grant dollars by state

Pennsylvania85%
Virginia2%
Montana2%
District of Columbia2%
California1%
Massachusetts1%

6 other states: 3%

Outside the US or with no state on the filing: 3%

  • The largest single recipient received 13% of grant dollars to organisations.
  • In tax year 2024, 70% of grant dollars went to organisations Richard King Mellon Foundation had funded in earlier filings.
  • No grants were paid directly to organisations outside the US.
  • 2% of grant dollars went to intermediaries that regrant to other organisations.

Grants

296 grants in the latest filing analysed · median $220k

How much do they typically give?

Share of 296 grants in tax year 2024 by size

$1k–$2.5k<1%
$2.5k–$5k<1%
$5k–$10k<1%
$10k–$25k9%
$25k–$50k2%
$50k–$100k10%
$100k–$250k30%
$250k–$500k28%
$500k–$1M13%
$1M and over6%

Median $220k (tax year 2024)

The largest grants to organisations in the foundation’s latest filing:

  • University of Pittsburgh · Toward ten-year support of the university's construction and launch of a facility at hazelwood green to catalyze economic development strategy focused on building facilities for manufacturing cell, gene, and antibody-based therapies to treat human diseases
    $10,000,0002024 tax year
  • Carnegie Mellon University · Toward ten-year support of construction of a new building for sciences in oakland
    $7,500,0002024 tax year
  • Carnegie Mellon University · Toward four-year support to establish a permanent manufacturing futures institute at hazelwood green
    $7,000,0002024 tax year
  • Carnegie Mellon University · Toward ten-year support to construct a robotics innovation center at hazelwood green to accelerate robotics discovery and entreprenuership and to strengthen pittsburgh's economic future
    $5,500,0002024 tax year
  • American Prairie Foundation · To acquire multiple properties to assemble a short grass prairie ecosystem reserve in northcentral montana
    $4,500,0002024 tax year
  • Children's Hospital of Pittsburgh Foundation · To conduct research in infection biology and childhood asthma at upmc childrens hospital and retain outstanding scientists in pittsburgh
    $2,100,0002024 tax year
  • The Citizen Science Lab · To expand operations with the creation of the state-of-the-art center for scientific excellence at the historic mlk reading and cultural center in the hill district
    $2,000,0002024 tax year
  • Phoebe Foundation · Toward construction of a new medical tower to house a level ii trauma center, neonatal intensive care unit, and intensive care facility
    $2,000,0002024 tax year

Grants to organisations listed in the foundation’s Form 990-PF filings. Grants to individuals are not shown.

Officers and directors

  • Armour N Mellon — Trustee
  • Constance Elizabeth Mellon Kapp — Trustee
  • Bruce King Mellon Henderson — Trustee
  • W Russell G Byers Jr — Trustee
  • Alison M Byers PsyD — Trustee
  • Brian J Hill — Secretary
  • Paul A Hannah — Trustee / Controller
  • Edward J Morgan — Trustee / Assistant Treasurer
  • Douglas L Sisson — Trustee / VP / Treasurer
  • Sam Reiman — Trustee / Director
  • Catharine Mellon Cathey — Trustee / President
  • Richard A Mellon — Trustee / Chairman / CEO

From the latest Form 990-PF filing

3 years of tax filings

YearTotal expensesGrants paidAssetsFiling document
2022 tax year$143,092,568$98,523,071$3,208,135,822Filing for 2022 tax year
2023 tax year$134,328,583$136,949,374$3,339,253,695Filing for 2023 tax year
2024 tax year$141,876,002$116,670,323$3,464,902,651Filing for 2024 tax year

Figures from the foundation’s IRS Form 990-PF filings. Assets are at fair market value at year end. The document icon links to each year’s filing on ProPublica Nonprofit Explorer.

Sources

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