South Dakota · Nonprofit
SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION
SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION (South Dakota) receives grants from 6 organizations whose IRS filings report $69,323 to it, the largest being THE BLACKBAUD GIVING FUND ($22,900). 4 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $17M
- Funders on record
- 6
- Grants received
- $69k
- Net assets
- $16M
What Sanford Underground Research Facility Foundation does
Mission
The organization is organized exclusively for charitable, educational, and scientific purposes, including, for such purposes, the making of distributions to and supporting the charitable, educational and scientific mission and program of the south dakota science and technology authority.
As stated on its FY2025 Form 990.
Program
The organization is organized exclusively for charitable, educational, and scientific purposes, including, for such purposes, the making of distributions to and supporting the charitable, educational and scientific mission and program of the south dakota science and technology authority.
$1,158,512 spentof which $58,512 as grants100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $1,158,512.
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 2024 to 2025, from $78k to $16M (+19993%).
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 SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION’s revenue is contributions — more reliant on donations than three-quarters of its peers (30% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 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.
Who funds it, year by year
2020 → 2023: the base broadened from 1 funder to 2 funders, grant income rose $10k → $13k.
5 of 6 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 100% 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 SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION’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
SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION leans on a few funders — its largest provides 33% of grant income and the top three 85%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
100% 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 SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION.
Largest funder’s share by year: 2020 100% · 2021 100% · 2022 34% · 2023 100% — broadly stable.
“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
100% of SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION'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 $275 that is directly attributable, 100% of it comes from funders outside South Dakota, across 1 state.
Funder states come from each funder’s own filing. $69k arriving through sponsors registered in 4 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
SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION has grown faster than three-quarters of the 132 public benefit nonprofits its size.
this organization peer median middle 50% of peers· 132 public benefit nonprofits $10M–$100M, FY2025
Organizations like SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION
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 South Dakota
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
100% of spending goes to programs.
Governance
Footprint & structure
Part of a family of 1 related entity
- Sd Science & Technology Authority · exempt
Screen this organization
A dated, signed PDF of the compliance screen for SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION: 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 SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION?
- SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION (South Dakota) receives grants from 6 organizations whose IRS filings report $69,323 to it, the largest being THE BLACKBAUD GIVING FUND ($22,900). 4 of them have funded it in more than one year, and 100% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION have?
- IRS filings report 6 organizations giving $69,323 in grants to SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION, 4 of which have funded it in more than one year.
- Who is the largest funder of SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION?
- THE BLACKBAUD GIVING FUND is the largest funder on record, with $22,900 in grants. The full list of funders is on this page.
- How can an organization like SANFORD UNDERGROUND RESEARCH FACILITY FOUNDATION find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in South Dakota. 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 2020–2025), and the filings of 6 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