New York · Nonprofit
STONY BROOK FOUNDATION INC
STONY BROOK FOUNDATION INC (New York) receives grants from 286 organizations whose IRS filings report $298,448,920 to it, the largest being THE SIMONS FOUNDATION INC ($96,776,288). 163 of them have funded it in more than one year.
- Revenue FY2025
- $233M
- Funders on record
- 286
- Grants received
- $298M
- Net assets
- $1.4B
What Stony Brook Foundation Inc does
Mission
The stony brook foundation, inc. Is a not-for-profit, "no member" corporation established in 1965. Sbf exists to advance the mission and goals of suny stony brook by facilitating, accepting and managing philanthropic gifts. (continued on schedule o).
As stated on its FY2025 Form 990.
Programs
Stony brook foundation provided funding to support various suny stony brook academic programs, centers and institutes in order to nurture academic achievement among suny stony brook students and faculty by providing funds to attract and retain exceptional faculty through the use of endowed chairs and endowed professorships, aid in curriculum enhancement as well as equip classrooms and laboratories with the latest technology.
$24,321,779 spentof which $12,120,177 as grants43% of program spendingStony brook foundation provided suny stony brook funds for various institutional support, including but not limited to: funding construction of cutting-edge facilities such as the indoor training center for athletics as well as substantial renovations of the current existing stony brook university hospital, subsidized funding to support various suny stony brook strategic academic initiatives, and stony brook university departments such as mathematics, physics and the turkana basin institute, an academic base for scientific research and training in paleontology and paleoanthropology.
$15,388,130 spentof which $10,233,707 as grants$2,549,051 earned by the program27% of program spendingStony brook foundation provided various student financial support to suny stony brook as well as to suny stony brook's students to assist in their effort of delivering a world-class education at a remarkably affordable prices and to keep recruiting the best young minds and future leaders from across the socioeconomic spectrum. Enhanced support for faculty and increased engagement.
$5,944,736 spentof which $5,328,013 as grants11% of program spendingStony brook foundation also aids in suny stony brook's firm commitment to providing a dedicated educational and social support system that enables all their students to thrive, by providing funding to improve student, administrative and public services across suny stony brook.
$3,950,064 spentof which $1,320,777 as grants7% of program spendingStony brook foundation provided support to suny stony brook in its efforts to maintain their reputation as a public research university that thrives on the forefront of discovery. As such, stony brook foundation provides funding to support various areas of research including: cancer research (stony brook cancer center), environmental and sustainability research (shinnecock bay restoration program), chemical biology research, communication science research, tick borne disease research within the laboratory for comparative medicine, and many other various research efforts.
$6,901,996 spentof which $3,455,653 as grants12% of program spending
The 5 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $56,506,705.
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 2023 to 2024, from $863M to $1.3B (+46%).
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: 2017 0% · 2018 0% · 2021 1%. Grants only. Government contracts and fees sit inside program revenue.
85% of STONY BROOK FOUNDATION INC’s revenue is contributions — more reliant on donations than three-quarters of its peers (14% for the typical peer).
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
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.
Board chair
Mr Richard L Gelfond
Trustee, chair
As listed on its FY2025 Form 990.
Who funds it, year by year
2017 → 2023: the base broadened from 58 funders to 104 funders, grant income rose $7.4M → $51M.
33 of 286 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 19% 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: $1.5M from 2 payers (the payer shares this organization's board, largest Stony Brook Foundation Realty Inc). These are real filings, and they are not money STONY BROOK FOUNDATION INC raised.
From the IRS filings of STONY BROOK FOUNDATION INC’s funders (the co-funder graph). Top 30 of 286 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
STONY BROOK FOUNDATION INC has a broad base — no single funder exceeds 32% of grant income, and it takes 4 funders to reach half.
the vertical line marks half of all grant income — 4 funders to its left
30% 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 STONY BROOK FOUNDATION INC.
Largest funder’s share by year: 2017 15% · 2018 24% · 2019 19% · 2020 56% · 2021 53% · 2022 35% · 2023 26% — growing more concentrated.
“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
34% of STONY BROOK FOUNDATION INC's funders are still giving 3 years after their first grant; 57% 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
88% of STONY BROOK FOUNDATION INC's grant income comes from New York funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $57M arriving through sponsors registered in 18 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
STONY BROOK FOUNDATION INC runs a healthier operating margin than three-quarters of the 684 education nonprofits its size.
this organization peer median middle 50% of peers· 684 education nonprofits over $100M, FY2025
Organizations like STONY BROOK 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 New York
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
43%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 18 states
Part of a family of 2 related entities
- Stony Brook Foundation Realty · exempt
- Long Island High Tech Incubator Inc · exempt
Screen this organization
A dated, signed PDF of the compliance screen for STONY BROOK 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 STONY BROOK FOUNDATION INC?
- STONY BROOK FOUNDATION INC (New York) receives grants from 286 organizations whose IRS filings report $298,448,920 to it, the largest being THE SIMONS FOUNDATION INC ($96,776,288). 163 of them have funded it in more than one year.
- How many funders does STONY BROOK FOUNDATION INC have?
- IRS filings report 286 organizations giving $298,448,920 in grants to STONY BROOK FOUNDATION INC, 163 of which have funded it in more than one year.
- Who is the largest funder of STONY BROOK FOUNDATION INC?
- THE SIMONS FOUNDATION INC is the largest funder on record, with $96,776,288 in grants. The full list of funders is on this page.
- How can an organization like STONY BROOK FOUNDATION INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in New York. 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 286 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