Hawaii · Nonprofit
MAUI HUMANE SOCIETY
MAUI HUMANE SOCIETY (Hawaii) receives grants from 344 organizations whose IRS filings report $19,424,280 to it, the largest being DAVE & CHERYL DUFFIELD FOUNDATION ($4,908,375). 101 of them have funded it in more than one year.
- Revenue FY2025
- $11M
- Funders on record
- 344
- Grants received
- $19M
- Net assets
- $35M
What Maui Humane Society does
Mission
The Maui Humane Society is organized for the prevention of cruel and/or inhumane treatment of animals. They also provide shelter for old, homeless, abandoned, sick, or injured animals, as well as encourage, promote, and provide education relating to the prevention of cruel and inhumane treatment of animals. The society gives assistance to the county of maui by operating the animal shelter and adoption center, and the animal control program on the island of maui.
As stated on its FY2025 Form 990.
Programs
Shelter operations: the sheltering program provides an open admission, high volume animal shelter and adoption center, veterinary services for shelter animals, and public education on humane care practices.
$5,587,809 spent$622,923 earned by the program62% of program spendingHumane enforcement: the humane enforcement program provides for the enforcement of laws regarding animal sheltering, dispositions and cruelty prevention, emergency after-hours services for injured animals, and public education on these topics.
$1,270,753 spent14% of program spendingPublic spay/neuter: the spay & neuter program provides low and no-cost spay and neuter services for dogs and cats, whether privately owned or feral. Surgeries are performed in Maui Humane Society's veterinary clinic by a licensed veterinarians.
$1,571,766 spent$188,526 earned by the program18% of program spendingOther program services: the hope fund program gives injured and/or sick homeless animals a second chance for life by providing the funds for them to receive special medical care. The transfer and wings of aloha programs transferred 729 animals to adoption-guaranteed rescues and shelters thus saving more animals lives. The society offers direct release services for those bringing pets to hawaii. The society operates one of only two crematoriums for animals on maui. The development and community outreach department strives to inform and educate the public, adults and children, about the society's life-saving work for the animals of maui.
$522,326 spent$14,380 earned by the program6% of program spending
The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $8,952,654.
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 $8.3M to $35M (+324%).
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 47% · 2018 41% · 2019 41% · 2020 46% · 2021 53% · 2022 37% · 2023 48% · 2024 9% · 2025 33%. Grants only. Government contracts and fees sit inside program revenue.
80% of MAUI HUMANE SOCIETY’s revenue is contributions — more donation-reliant than the typical peer (67% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 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
Nikki Russell
Interim CEO
Board chair
Hillary Nauss Dvm
Chair
As listed on its FY2025 Form 990.
The chief executive listed changed between the FY2019 and FY2020, and between the FY2024 and FY2025 filings.
Who funds it, year by year
2017 → 2023: the base broadened from 11 funders to 264 funders, grant income rose $482k → $6.4M.
44 of 344 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 50% 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 MAUI HUMANE SOCIETY’s funders (the co-funder graph). Top 30 of 344 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
MAUI HUMANE SOCIETY has a broad base — no single funder exceeds 25% 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
59% 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 MAUI HUMANE SOCIETY.
Largest funder’s share by year: 2017 65% · 2018 56% · 2019 36% · 2020 23% · 2021 63% · 2022 28% · 2023 39% — 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
55% of MAUI HUMANE SOCIETY's funders are still giving 3 years after their first grant; 29% 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
MAUI HUMANE SOCIETY draws 93% of its grant income from funders outside Hawaii, across 37 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $9.7M arriving through sponsors registered in 24 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
MAUI HUMANE SOCIETY has grown faster than three-quarters of the 134 animals nonprofits its size.
this organization peer median middle 50% of peers· 134 animals nonprofits $10M–$100M, FY2025
Organizations like MAUI HUMANE SOCIETY
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 Hawaii
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
82% of spending goes to programs.
Governance
Public support
93%
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 MAUI HUMANE SOCIETY: 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 MAUI HUMANE SOCIETY?
- MAUI HUMANE SOCIETY (Hawaii) receives grants from 344 organizations whose IRS filings report $19,424,280 to it, the largest being DAVE & CHERYL DUFFIELD FOUNDATION ($4,908,375). 101 of them have funded it in more than one year.
- How many funders does MAUI HUMANE SOCIETY have?
- IRS filings report 344 organizations giving $19,424,280 in grants to MAUI HUMANE SOCIETY, 101 of which have funded it in more than one year.
- Who is the largest funder of MAUI HUMANE SOCIETY?
- DAVE & CHERYL DUFFIELD FOUNDATION is the largest funder on record, with $4,908,375 in grants. The full list of funders is on this page.
- How can an organization like MAUI HUMANE SOCIETY find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Hawaii. 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 Maui Humane Society →
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 344 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