Florida · Nonprofit
MARK AND GRETA WALKER FOUNDATION
MARK AND GRETA WALKER FOUNDATION (Florida) receives grants from 2 organizations whose IRS filings report $533,000 to it, the largest being WALKER FAMILY CHARITABLE TRUST ($408,000). 2 of them have funded it in more than one year.
Against its field
MARK AND GRETA WALKER FOUNDATION has grown faster than half of the 4,403 philanthropy nonprofits its size.
this organization peer median middle 50% of peers· 4,403 philanthropy nonprofits under $100k, FY2025
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- Palm Beach County Food Bank Inclocal
- Prime Coalition Incportfolio match
- Elton Family Foundationportfolio match
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Who funds it, year by year
2017 → 2023: the base held at 2 funders, grant income rose $55k → $82k.
From the IRS filings of MARK AND GRETA WALKER FOUNDATION’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
MARK AND GRETA WALKER FOUNDATION leans on a few funders — its largest provides 77% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2017 91% · 2018 94% · 2019 91% · 2020 91% · 2021 93% · 2022 72% · 2023 61% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
100% of MARK AND GRETA WALKER FOUNDATION's grant income comes from Florida funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first.
- Palm Beach County Food Bank InclocalFL · funds 190 organizations near you
- Prime Coalition Incportfolio matchits grantees resemble your mission
- Elton Family Foundationportfolio matchits grantees resemble your mission
- Craig and Connie Thatcher Foundationportfolio matchits grantees resemble your mission
- Ralph & Elizabeth Anderson Charitable Foundationportfolio matchits grantees resemble your mission
- Bethel Woods Center for the Arts Incportfolio matchits grantees resemble your mission
- The Harold and Carole Pump Foundation (Fka the Harold Pump Foundation)portfolio matchits grantees resemble your mission
- The Chamber of Nonprofit Health and Human Agencies in Palm Beach County InclocalFL · funds 129 organizations near you
- Kenny Jacob Rudin Foundationportfolio matchits grantees resemble your mission
- Abe & Rae Weingarten Fundportfolio matchits grantees resemble your mission
- The Abe & Kathyrn Selsky Foundation Incportfolio matchits grantees resemble your mission
- Grace Hospice Foundation Incportfolio matchits grantees resemble your mission
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Organizations like MARK AND GRETA WALKER FOUNDATION
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Florida
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Screen this organization
A dated, signed PDF of the compliance screen for MARK AND GRETA WALKER FOUNDATION: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds MARK AND GRETA WALKER FOUNDATION?
- MARK AND GRETA WALKER FOUNDATION (Florida) receives grants from 2 organizations whose IRS filings report $533,000 to it, the largest being WALKER FAMILY CHARITABLE TRUST ($408,000). 2 of them have funded it in more than one year.
- How many funders does MARK AND GRETA WALKER FOUNDATION have?
- IRS filings report 2 organizations giving $533,000 in grants to MARK AND GRETA WALKER FOUNDATION, 2 of which have funded it in more than one year.
- Who is the largest funder of MARK AND GRETA WALKER FOUNDATION?
- WALKER FAMILY CHARITABLE TRUST is the largest funder on record, with $408,000 in grants. The full list of funders is on this page.
- How can an organization like MARK AND GRETA WALKER FOUNDATION find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Florida. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 2funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported August 27, 2026. What this page cannot tell you · view filing