Indiana · Nonprofit
STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM
STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM (Indiana) receives grants from 8 organizations whose IRS filings report $5,777,135 to it, the largest being RONALD L MCDANIEL FOUNDATION ($5,533,184). 6 of them have funded it in more than one year.
- Revenue FY2025
- $2.2M
- Funders on record
- 8
- Grants received
- $5.8M
- Net assets
- $21M
What Stanley W Hayes Research Fdn Inc Aka Hayes Arboretum does
Programs
Operated hayes arboretum, open to the public january december of each year. In fy 2025, we have been able to fully restore our operations to pre-2020 levels and were able to keep the grounds open for hiking and buildings open for normal educational activities. We manage buildings in the nature center complex (nature center, john turner-grey meeting room a.k.a. Annex, administration building, administration building library and hayes museum) as well as the herb garden, butterfly garden and butterfly cottage as part of the nature playscape. We mow about 60 acres per week during the period from april 1st through october 15th. We support and service the brice e. Hayes memorial fountain, woodland chapel, paul c. Mcclure native woody plant preserve and a 3.3 mile auto tour plus 5.5 miles of hiking trails on the west side of our property as well as help maintain 7.5 miles of multi-use trails (walking & running) on the east side of our property.
$472,170 spentOur naturalist/program coordinator was employed on a full-time basis and, coupled with ample volunteer help was able to expertly manage a growing volume of activity in educational and outreach activities. For our 2025 fy, we tallied a total of 3,884 people in on-site programs and our volunteer hours for the fy grew to 1,204 hours, our 4th consecutive increase in annual fy hours. Our naturalist/program coordinator led and or directed 125 combined programs and fieldstrips to the arboretum during the fy. Major off-site involvement by the naturalist was at wayne county conservation days (1,100 students) and family earth day celebration (500 people). We also serve as a host site on a no cost/low cost basis for eastern indiana beekeepers club, petal & stem garden club, and american discovery hiking club.
$43,837 spentWe were the host site for the richmond family earth day event in april which attracted approximately 500 people. This was a strong collaboration among local environmental groups to highlight the importance of preserving, protecting and perpetuating our earth. We are enjoying the benefits of a large grant funding 3 areas master planning, staff enlargement & our nature playscape. We have been approved as a certified nature explore classroom for an 8th year & over 2,000 children annually attend learning in this space & we are enlarging our space & upgrading our playscape infrastucture. We are connecting people with nature & supercharging our nature education mission through infra-structure improvements, technological advances such as web-based auto tour narratives & 100 tree narratives with pictures. Our master planning team is honing in on what we & our stakeholders want to see 15 years from now & the prospects are exciting as we grow & prosper and expand our direct charitable
$7,699 spent
The 3 programs described on its FY2024 Form 990-PF.
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 50 means half. The number beside each label in the key is where it ended.
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 $16M to $21M (+34%).
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
Stephen H Hayes Jr
Secretary/executive director
As listed on its FY2025 Form 990-PF.
Who funds it, year by year
2017 → 2023: the base broadened from 2 funders to 4 funders, grant income rose $272k → $1.5M.
3 of 8 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 3% 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 STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM’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
STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM leans on a few funders — its largest provides 96% of grant income and the top three 99%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2017 97% · 2018 100% · 2019 38% · 2020 96% · 2021 98% · 2022 92% · 2023 98% — 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.
How long its funders stay
67% of STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM's funders are still giving 3 years after their first grant; 75% 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
STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM draws 99% of its grant income from funders outside Indiana, across 3 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $180k arriving through sponsors registered in 2 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.
Organizations like STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM
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 Indiana
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Screen this organization
A dated, signed PDF of the compliance screen for STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM: 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 STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM?
- STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM (Indiana) receives grants from 8 organizations whose IRS filings report $5,777,135 to it, the largest being RONALD L MCDANIEL FOUNDATION ($5,533,184). 6 of them have funded it in more than one year.
- How many funders does STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM have?
- IRS filings report 8 organizations giving $5,777,135 in grants to STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM, 6 of which have funded it in more than one year.
- Who is the largest funder of STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM?
- RONALD L MCDANIEL FOUNDATION is the largest funder on record, with $5,533,184 in grants. The full list of funders is on this page.
- How can an organization like STANLEY W HAYES RESEARCH FDN INC AKA HAYES ARBORETUM find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Indiana. 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 Stanley W Hayes Research Fdn Inc Aka Hayes Arboretum →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), and the filings of 8 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