Illinois · Nonprofit
AMERICAN NUCLEAR SOCIETY INCORPORATED
AMERICAN NUCLEAR SOCIETY INCORPORATED (Illinois) receives grants from 15 organizations whose IRS filings report $431,217 to it, the largest being BNY MELLON CHARITABLE GIFT FUND ($210,000). 7 of them have funded it in more than one year, and 55% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $15M
- Funders on record
- 15
- Grants received
- $431k
- Net assets
- $23M
What American Nuclear Society Incorporated does
Mission
Ans provides its members with opportunities for professional development, serves the nuclear community by creating forums for sharing information and advancements in technology, and engages the public and policy makers through communication outreach.
As stated on its FY2025 Form 990.
Programs
Meetings and national conventions: expenses incurred for two national meetings and 8 topical meetings with scientific and education presentations. Approximately 6,611 professionals, scientists, engineers, students and guests attended our meetings in 2025.
$6,357,691 spentof which $14,705 as grants$5,458,213 earned by the program47% of program spendingMember services: expenses incurred for support service projects, member services, member and subscription promotions, honors and awards, scholarships, officer support and special projects to promote nuclear science.
$3,140,473 spentof which $425,960 as grants$748,579 earned by the program23% of program spendingPublications: expenses incurred for 4 recurring scientific journals, 2 magazines provided to members and commercially, books, newsletters, meeting proceedings, special reports to enhance and promote nuclear science.
$2,477,343 spent$3,441,104 earned by the program18% of program spendingCenter for nuclear science and technology information; led by staff and the society's member volunteers, center programs increase understanding of the basic science of the atomic nucleus. Programs focus on the principles of nuclear science and technology and how its application improves the human condition. Programs engage the public, k12 students and educators, the media, and policymakers and their staff.
$1,108,165 spentof which $35,887 as grants8% of program spendingStandards & other programs
$438,325 spentof which $18,730 as grants$464,016 earned by the program3% of program spending
The 5 programs described on its FY2025 Form 990, listed largest first by expense. Program spending in total: $13,521,997.
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.
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 $28M to $24M (−14%).
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: 2024 3% · 2025 5%. Grants only. Government contracts and fees sit inside program revenue.
24% of AMERICAN NUCLEAR SOCIETY INCORPORATED’s revenue is contributions — about as donation-reliant as the typical peer (52% 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.
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
Craig H Piercy
Executive director/CEO
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 4 funders, grant income fell $16k → $11k.
3 of 15 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 55% 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 AMERICAN NUCLEAR SOCIETY INCORPORATED’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
AMERICAN NUCLEAR SOCIETY INCORPORATED leans on a few funders — its largest provides 49% of grant income and the top three 82%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
94% 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 AMERICAN NUCLEAR SOCIETY INCORPORATED.
Largest funder’s share by year: 2017 100% · 2019 98% · 2020 67% · 2021 73% · 2022 94% · 2023 59% — 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
13% of AMERICAN NUCLEAR SOCIETY INCORPORATED's funders are still giving 3 years after their first grant; 47% 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
55% of AMERICAN NUCLEAR SOCIETY INCORPORATED'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 $195k that is directly attributable, 100% of it comes from funders outside Illinois, across 10 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $236k arriving through sponsors registered in 3 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
AMERICAN NUCLEAR SOCIETY INCORPORATED has grown faster than half of the 78 science & tech nonprofits its size.
this organization peer median middle 50% of peers· 78 science & tech nonprofits $10M–$100M, FY2025
Government funding AMERICAN NUCLEAR SOCIETY INCORPORATED receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $3.9M on record.
- Department of Energy$3.4M
- Nuclear Regulatory Commission$435k
- Department of Defense$9k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like AMERICAN NUCLEAR SOCIETY INCORPORATED
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
88% of spending goes to programs.
Governance
Public support
75%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 1 state
Screen this organization
A dated, signed PDF of the compliance screen for AMERICAN NUCLEAR SOCIETY INCORPORATED: 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 AMERICAN NUCLEAR SOCIETY INCORPORATED?
- AMERICAN NUCLEAR SOCIETY INCORPORATED (Illinois) receives grants from 15 organizations whose IRS filings report $431,217 to it, the largest being BNY MELLON CHARITABLE GIFT FUND ($210,000). 7 of them have funded it in more than one year, and 55% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does AMERICAN NUCLEAR SOCIETY INCORPORATED have?
- IRS filings report 15 organizations giving $431,217 in grants to AMERICAN NUCLEAR SOCIETY INCORPORATED, 7 of which have funded it in more than one year.
- Who is the largest funder of AMERICAN NUCLEAR SOCIETY INCORPORATED?
- BNY MELLON CHARITABLE GIFT FUND is the largest funder on record, with $210,000 in grants. The full list of funders is on this page.
- How can an organization like AMERICAN NUCLEAR SOCIETY INCORPORATED 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 2018–2025), and the filings of 15 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