Illinois · Nonprofit
NATIONAL ANTI-VIVISECTION SOCIETY
NATIONAL ANTI-VIVISECTION SOCIETY (Illinois) receives grants from 56 organizations whose IRS filings report $3,252,206 to it, the largest being CARROLL PETRIE FOUNDATION ($750,000). 40 of them have funded it in more than one year.
- Revenue FY2025
- $4.6M
- Funders on record
- 56
- Grants received
- $3.3M
- Net assets
- $28M
What National Anti-Vivisection Society does
Mission
Navs is dedicated to ending the exploitation of animals used in science. Navs works to identify and promote solutions that advance humane science in laboratories and classrooms.
As stated on its FY2025 Form 990.
Programs
Navs works urgently to raise awreness and educate the public about the use of animals in education, research, and testing. Navs promotes and funds the identification, development, and use of humane, human-relevant solutions that can replace the cruel and wasteful use of animals in research, testing, and education. Navs disseminates credible and compelling educational content via its website, social media channels, printed publications, and other media outlets.
$1,128,678 spent$566 earned by the program42% of program spendingLegislative and regulatory programs - navs advocates for legislation and regulatory changes that replace or reduce the use of animals in government funded research. Navs works at the state and national level to monitor and take action on proposed laws that affect animals used in research and testing.
$503,793 spentof which $95,000 as grants19% of program spendingScience programs - navs works with scientists and science educators to implement humane alternatives to animals in laboratories and classrooms. Through classroom grants and science fair awards, navs encourages young scientists and their teachers to use humane solutions rather than animals. Navs also sponsors relevant science conferences.
$531,236 spentof which $215,000 as grants20% of program spendingCooperative efforts - to advance navs' mission by supporting sanctuaries and animal rescues in times of need and to provide creative platforms for advocates and potential advocates to promote their visions of a more human and just world for animals.
$553,962 spentof which $136,269 as grants20% of program spendingStudent/teacher programs - to promote innovative science education, navs provides scholarships for humane science projects at international, regional and local science fairs and manages the biology education advancement program (bioleap) to encourage and support educators who wish to teach the life sciences without harming animals.
The 5 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $2,717,669.
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 $13M to $25M (+86%).
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: 2021 3% · 2022 6%. Grants only. Government contracts and fees sit inside program revenue.
63% of NATIONAL ANTI-VIVISECTION SOCIETY’s revenue is contributions — about as donation-reliant as the typical peer (74% 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
Kenneth Kandaras
Executive director
As listed on its FY2025 Form 990.
The chief executive listed changed between the FY2018 and FY2019 filings.
Who funds it, year by year
2017 → 2023: the base broadened from 15 funders to 30 funders, grant income rose $194k → $509k.
7 of 56 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 17% 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 NATIONAL ANTI-VIVISECTION SOCIETY’s funders (the co-funder graph). Top 30 of 56 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
NATIONAL ANTI-VIVISECTION SOCIETY has a broad base — no single funder exceeds 23% 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
Largest funder’s share by year: 2017 41% · 2018 56% · 2019 63% · 2020 59% · 2021 16% · 2022 16% · 2023 25% — 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
73% of NATIONAL ANTI-VIVISECTION SOCIETY's funders are still giving 3 years after their first grant; 71% 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
NATIONAL ANTI-VIVISECTION SOCIETY draws 96% of its grant income from funders outside Illinois, across 21 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $546k arriving through sponsors registered in 6 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
NATIONAL ANTI-VIVISECTION SOCIETY runs a healthier operating margin than half of the 717 animals nonprofits its size.
this organization peer median middle 50% of peers· 717 animals nonprofits $1M–$10M, FY2025
Organizations like NATIONAL ANTI-VIVISECTION 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 Illinois
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
76% of spending goes to programs.
Governance
Public support
42%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Footprint & structure
Files a return copy in 30 states
Part of a family of 1 related entity
- International Foundation for Ethical Research · exempt
Screen this organization
A dated, signed PDF of the compliance screen for NATIONAL ANTI-VIVISECTION 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 NATIONAL ANTI-VIVISECTION SOCIETY?
- NATIONAL ANTI-VIVISECTION SOCIETY (Illinois) receives grants from 56 organizations whose IRS filings report $3,252,206 to it, the largest being CARROLL PETRIE FOUNDATION ($750,000). 40 of them have funded it in more than one year.
- How many funders does NATIONAL ANTI-VIVISECTION SOCIETY have?
- IRS filings report 56 organizations giving $3,252,206 in grants to NATIONAL ANTI-VIVISECTION SOCIETY, 40 of which have funded it in more than one year.
- Who is the largest funder of NATIONAL ANTI-VIVISECTION SOCIETY?
- CARROLL PETRIE FOUNDATION is the largest funder on record, with $750,000 in grants. The full list of funders is on this page.
- How can an organization like NATIONAL ANTI-VIVISECTION SOCIETY 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 2017–2025), and the filings of 56 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