Wisconsin · Nonprofit
ENDOMETRIOSIS ASSOC INC
ENDOMETRIOSIS ASSOC INC (Wisconsin) receives grants from 20 organizations whose IRS filings report $381,503 to it, the largest being NATIONAL PHILANTHROPIC TRUST ($155,250). 13 of them have funded it in more than one year, and 57% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $201k
- Funders on record
- 20
- Grants received
- $382k
- Net assets
- $275k
What Endometriosis Assoc Inc does
Mission
To support those affected by endometriosis, educate about the disease, and conduct and promote research related to the disease.
As stated on its FY2025 Form 990.
Programs
The research/translation medicine program supports a wide range of scientific and clinical activities, including consulting with scientists, corporations and government entities, assisting scientists and medical groups with insights gleaned from working in our field for over 40 years, providing introductions, testimonies and letters of support, assistance with clinical recruitments, research projects and patient surveys to aid better clinical practice and scientific insights.
$63,268 spent43% of program spendingThe education program seeks to educate families and the community at large about endometriosis. Outreach takes many forms. It includes the associations three popular books on the disease (one in spanish), literature in 31 languages, media stores, our website, information postings on facebook and booths (run by volunteers and/or staff) at conferences and meetings worldwide where print and media educational materials are provided. In march the association sponsors endometriosis awareness month worldwide sending yellow ribbons in three languages and brochures throughout the u.s. And accross the globe to volunteer who distribute them to healthcare professionals, familes, frineds, and others. Annually we respond to requests for information, mailing more that 1,000 information packets, while responding to other requests via mail, email, facebook or phone.
$48,137 spent33% of program spendingOur support program assists those suffering from endometriosis, those who suspect they may have the disease and those who care for these girls and women, their families and others who seek to understand or to help. Staff members annual field thousands of requests for support or assistance. We also provide discounted nutritional supplements and a discount topical pain reliever.
$33,614 spent23% of program spendingMisc program expenses - support of those with endometriosis
$1,737 spent1% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $146,756.
The organization over time
Each line starts at 100 in 2020, so what you read is the shape rather than the size: 150 means half as much again as 2020, 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.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2021 to 2022, from $350k to $230k (−34%).
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.
Government-grant reliance: 2021 15% · 2025 0%. Grants only. Government contracts and fees sit inside program revenue.
96% of ENDOMETRIOSIS ASSOC INC’s revenue is contributions — more donation-reliant than the typical peer (82% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 6 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Mary Lou Ballweg
Executive director/president
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 4 funders to 8 funders, grant income rose $23k → $166k.
6 of 20 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 57% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of ENDOMETRIOSIS ASSOC 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
ENDOMETRIOSIS ASSOC INC leans on a few funders — its largest provides 41% of grant income and the top three 77%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
85% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund ENDOMETRIOSIS ASSOC INC.
Largest funder’s share by year: 2017 88% · 2018 57% · 2019 84% · 2020 54% · 2021 38% · 2022 35% · 2023 75% — 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.
How long its funders stay
27% of ENDOMETRIOSIS ASSOC INC's funders are still giving 3 years after their first grant; 65% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
57% of ENDOMETRIOSIS ASSOC INC's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $164k that is directly attributable, 96% of it comes from funders outside Wisconsin, across 10 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $217k arriving through sponsors registered in 6 states is 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.
Against its field
ENDOMETRIOSIS ASSOC INC is better cushioned than half of the 7,883 health nonprofits its size.
this organization peer median middle 50% of peers· 7,883 health nonprofits $100k–$1M, FY2025
Organizations like ENDOMETRIOSIS ASSOC INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the 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
68% of spending goes to programs.
Governance
Public support
98%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 2 states
Screen this organization
A dated, signed PDF of the compliance screen for ENDOMETRIOSIS ASSOC 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. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds ENDOMETRIOSIS ASSOC INC?
- ENDOMETRIOSIS ASSOC INC (Wisconsin) receives grants from 20 organizations whose IRS filings report $381,503 to it, the largest being NATIONAL PHILANTHROPIC TRUST ($155,250). 13 of them have funded it in more than one year, and 57% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does ENDOMETRIOSIS ASSOC INC have?
- IRS filings report 20 organizations giving $381,503 in grants to ENDOMETRIOSIS ASSOC INC, 13 of which have funded it in more than one year.
- Who is the largest funder of ENDOMETRIOSIS ASSOC INC?
- NATIONAL PHILANTHROPIC TRUST is the largest funder on record, with $155,250 in grants. The full list of funders is on this page.
- How can an organization like ENDOMETRIOSIS ASSOC 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.
Play a game about who funds Endometriosis Assoc →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2020–2025), and the filings of 20 funders 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 October 14, 2026. What this page cannot tell you · view filing