Pennsylvania · Nonprofit
GREAT MARSH INSTITUTE LTD
GREAT MARSH INSTITUTE LTD (Pennsylvania) receives grants from 2 organizations whose IRS filings report $2,000 to it, the largest being Justamere Foundation ($1,000). 1 of them have funded it in more than one year.
Against its field
GREAT MARSH INSTITUTE LTD has grown faster than three-quarters of the 2,054 environment nonprofits its size.
this organization peer median middle 50% of peers· 2,054 environment 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.
- The Fund for Women and Girlsshared funderslocal
- United Way of Chester County Incshared funderslocal
- The Alliance for Health Equityshared funderslocal
The organization over time
Each line starts at 100 in 2018, so what you read is the shape rather than the size: 150 means half as much again as 2018, 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.
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
100% of GREAT MARSH INSTITUTE LTD’s revenue is contributions — more reliant on donations than three-quarters of its peers (92% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 5 of the last 8 reported years ran a deficit.
Who funds it, year by year
2021 → 2023: the base narrowed from 2 funders to 1 funder, grant income fell $2k → $500.
From the IRS filings of GREAT MARSH INSTITUTE LTD’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
GREAT MARSH INSTITUTE LTD leans on a few funders — its largest provides 50% 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: 2021 67% · 2023 100% — growing more concentrated.
“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
GREAT MARSH INSTITUTE LTD draws 100% of its grant income from funders outside Pennsylvania, across 2 states in all.
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.
- The Fund for Women and Girlsshared funderslocalPA · backs 19 organizations that share your funders · funds 40 organizations near you
- United Way of Chester County Incshared funderslocalPA · backs 27 organizations that share your funders · funds 94 organizations near you
- The Alliance for Health Equityshared funderslocalPA · backs 16 organizations that share your funders · funds 51 organizations near you
- United Way of Southern Chester Countyshared funderslocalPA · backs 13 organizations that share your funders · funds 25 organizations near you
- The Smith Foundation Aka the Hoxie Harrison Smith Foundationshared fundersPA · backs 13 organizations that share your funders
- Grace S and W Linton Nelson Foundationshared fundersPA · backs 14 organizations that share your funders
- Genuardi Family Foundationshared fundersPA · backs 20 organizations that share your funders
- The Gordon Charter Foundationshared fundersPA · backs 32 organizations that share your funders
- Chester County Community Foundationshared funderslocalPA · backs 47 organizations that share your funders · funds 226 organizations near you
- Ccresshared funderslocalPA · backs 12 organizations that share your funders · funds 33 organizations near you
- Foundation for Delaware Countyshared fundersPA · backs 15 organizations that share your funders
- The Oxford Area Foundationshared funderslocalPA · backs 9 organizations that share your funders · funds 31 organizations near you
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.
Read directly from this organization’s own Form 990, as neutral context.
Public support
48%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for GREAT MARSH INSTITUTE LTD: 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 GREAT MARSH INSTITUTE LTD?
- GREAT MARSH INSTITUTE LTD (Pennsylvania) receives grants from 2 organizations whose IRS filings report $2,000 to it, the largest being Justamere Foundation ($1,000). 1 of them have funded it in more than one year.
- How many funders does GREAT MARSH INSTITUTE LTD have?
- IRS filings report 2 organizations giving $2,000 in grants to GREAT MARSH INSTITUTE LTD, 1 of which have funded it in more than one year.
- Who is the largest funder of GREAT MARSH INSTITUTE LTD?
- Justamere Foundation is the largest funder on record, with $1,000 in grants. The full list of funders is on this page.
- How can an organization like GREAT MARSH INSTITUTE LTD find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Pennsylvania. 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 2018–2025), 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