Wisconsin · Nonprofit
ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC
ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC (Wisconsin) receives grants from 5 organizations whose IRS filings report $36,119 to it, the largest being ALLIANT ENERGY FOUNDATION INC ($15,900). 3 of them have funded it in more than one year.
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.
- Beaver Dam Community Hospitals Foundation Inclocal
- Francis Kerscher Foundationportfolio match
- Community Foundation of Grundy Countyportfolio 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.
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.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 0 of the last 9 reported years ran a deficit.
reserve
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 3 funders, grant income rose $4k → $6k.
1 of 5 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 2% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
Left out of every figure on this page: $5.0M from one payer (the payer shares this organization's board, largest Marquardt Village Inc). These are real filings, and they are not money ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC raised.
From the IRS filings of ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC’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
ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC leans on a few funders — its largest provides 44% of grant income and the top three 87%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
Largest funder’s share by year: 2017 100% · 2020 79% · 2021 46% · 2022 57% · 2023 58% — 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
70% of ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC's grant income comes from Wisconsin funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $719 arriving through sponsors registered in 1 stateis excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. 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.
- Beaver Dam Community Hospitals Foundation InclocalWI · funds 37 organizations near you
- Francis Kerscher Foundationportfolio matchits grantees resemble your mission
- Community Foundation of Grundy Countyportfolio matchits grantees resemble your mission
- Leadingage Minnesota Foundationportfolio matchits grantees resemble your mission
- Angels Among US Incportfolio matchits grantees resemble your mission
- Kathleen & Frank Thometz Charitable Foundationportfolio matchits grantees resemble your mission
- Illinois Prairie Community Foundation Incportfolio matchits grantees resemble your mission
- Community Foundation of Greater Dubuqueportfolio matchits grantees resemble your mission
- Martha Ellen Tye Foundationportfolio matchits grantees resemble your mission
- Trusted Fraternal Lifeportfolio matchits grantees resemble your mission
- Quad Cities Community Foundationportfolio matchits grantees resemble your mission
- James B & Melita a McDonough Foundationportfolio 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 ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC
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 Wisconsin
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
84% of spending goes to programs.
Governance
Public support
87%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Part of a family of 15 related entities
- Marquardt Memorial Manor Inc · exempt
- Marquardt Village Inc · exempt
- Illuminus Inc · exempt
- Moravian Homes Inc · exempt
- Mueller Apartments Inc · exempt
Screen this organization
A dated, signed PDF of the compliance screen for ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC: 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 ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC?
- ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC (Wisconsin) receives grants from 5 organizations whose IRS filings report $36,119 to it, the largest being ALLIANT ENERGY FOUNDATION INC ($15,900). 3 of them have funded it in more than one year.
- How many funders does ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC have?
- IRS filings report 5 organizations giving $36,119 in grants to ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC, 3 of which have funded it in more than one year.
- Who is the largest funder of ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC?
- ALLIANT ENERGY FOUNDATION INC is the largest funder on record, with $15,900 in grants. The full list of funders is on this page.
- How can an organization like ILLUMINUS FOUNDATION INC F/K/A MARQUARDT FOUNDATION INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Wisconsin. 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 5funders 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