Illinois · Nonprofit
ANGELMAN SYNDROME FOUNDATION INC
ANGELMAN SYNDROME FOUNDATION INC (Illinois) receives grants from 110 organizations whose IRS filings report $4,184,573 to it, the largest being DONOR ADVISED CHARITABLE GIVING INC ($1,573,530). 51 of them have funded it in more than one year, and 74% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $3.9M
- Funders on record
- 110
- Grants received
- $4.2M
- Net assets
- $2.1M
What Angelman Syndrome Foundation Inc does
Mission
The foundation provides educational tools, information and support to individuals concerned with those affected by angelman syndrome. The foundation supports and funds basic science research and clinical trials.
As stated on its FY2025 Form 990.
Programs
The foundation provides educational tools, information and support to individuals concerned with those affected by angelman syndrome. The foundation supports and funds as-specific research to find viable therapeutics and a cure for as.
$1,298,418 spentof which $1,298,418 as grants$1,440,198 earned by the program46% of program spendingConference, clinics, and grant program
$1,529,626 spent54% of program spending
The 2 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $2,828,044.
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.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2018 to 2019, from $1.4M to $1.8M (+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 4% · 2022 2%. Grants only. Government contracts and fees sit inside program revenue.
59% of ANGELMAN SYNDROME FOUNDATION INC’s revenue is contributions — more donation-reliant than the typical peer (51% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 4 of the last 9 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
Amanda Moore
CEO
Board chair
Rebecca Burdine
Sac chair
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 18 funders to 44 funders, grant income rose $274k → $518k.
23 of 110 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 74% 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 ANGELMAN SYNDROME FOUNDATION INC’s funders (the co-funder graph). Top 30 of 110 funders by total. 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
ANGELMAN SYNDROME FOUNDATION INC has a broad base — no single funder exceeds 38% of grant income, and it takes 3 funders to reach half.
the vertical line marks half of all grant income — 3 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 ANGELMAN SYNDROME FOUNDATION INC.
Largest funder’s share by year: 2017 80% · 2018 45% · 2019 45% · 2020 25% · 2021 36% · 2022 64% · 2023 19% — 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
37% of ANGELMAN SYNDROME FOUNDATION INC's funders are still giving 3 years after their first grant; 46% 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
74% of ANGELMAN SYNDROME FOUNDATION 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 $1.1M that is directly attributable, 97% of it comes from funders outside Illinois, across 30 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $3.1M arriving through sponsors registered in 14 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
ANGELMAN SYNDROME FOUNDATION INC runs a healthier operating margin than half of the 5,002 health nonprofits its size.
this organization peer median middle 50% of peers· 5,002 health nonprofits $1M–$10M, FY2025
Organizations like ANGELMAN SYNDROME FOUNDATION 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 Illinois
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
76% of spending goes to programs.
Governance
Public support
97%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 50 states
Screen this organization
A dated, signed PDF of the compliance screen for ANGELMAN SYNDROME 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. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds ANGELMAN SYNDROME FOUNDATION INC?
- ANGELMAN SYNDROME FOUNDATION INC (Illinois) receives grants from 110 organizations whose IRS filings report $4,184,573 to it, the largest being DONOR ADVISED CHARITABLE GIVING INC ($1,573,530). 51 of them have funded it in more than one year, and 74% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does ANGELMAN SYNDROME FOUNDATION INC have?
- IRS filings report 110 organizations giving $4,184,573 in grants to ANGELMAN SYNDROME FOUNDATION INC, 51 of which have funded it in more than one year.
- Who is the largest funder of ANGELMAN SYNDROME FOUNDATION INC?
- DONOR ADVISED CHARITABLE GIVING INC is the largest funder on record, with $1,573,530 in grants. The full list of funders is on this page.
- How can an organization like ANGELMAN SYNDROME FOUNDATION INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Illinois. 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 110 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 22, 2026. What this page cannot tell you · view filing