California · Nonprofit
Hertwig Haven
Hertwig Haven (California) receives grants from 1 organization whose IRS filings report $1,000 to it, the largest being McNabb Foundation ($1,000). 0 of them have funded it in more than one year.
- Revenue FY2025
- $138k
- Funders on record
- 1
- Grants received
- $1k
- Net assets
- $881k
What Hertwig Haven does
Mission
The Organization rescues & provides sanctuary to abandoned and neglected farm animals.
As stated on its FY2025 Form 990.
Program
Hertwig Haven provides sanctuary to abandoned and neglected farm animals.In 2025,Hertwig Haven continued to provide care for our 23 animal residents:4 horses, 1 donkey, 4 Sheep, 2 alpacas,2 Dogs, 6 Cats, 8 ChickensHertwig Haven provided shelter, nutrition, veterinary and farrier care, shearing, training, and enrichment for all animals in its care. The organization accepted two young sheep to provide companionship for its senior sheep. Facility improvements included enhanced footing, flood-mitigation efforts, and installation of new gates to improve safety and animal management.
$211,265 spent100% of program spending
The program described on its FY2025 Form 990. Program spending in total: $211,265.
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 2018 to 2019, from $721k to $921k (+28%).
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.
0% of Hertwig Haven’s revenue is contributions — more earned-revenue than three-quarters of its peers (86% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 5 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.
Who funds it, year by year
Grant support over time, funder by funder — shade shows the grant size each year.
From the IRS filings of Hertwig Haven’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.
Where its funders are
Hertwig Haven draws 100% of its grant income from funders outside California, across 1 state in all.
Funder states come from each funder’s own filing. 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
Hertwig Haven's revenue fell 85% between 2017 and 2025.
this organization peer median middle 50% of peers· 3,693 animals nonprofits $100k–$1M, FY2025
Organizations like Hertwig Haven
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 California
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
90% of spending goes to programs.
Governance
Public support
88%
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 Hertwig Haven: 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 Hertwig Haven?
- Hertwig Haven (California) receives grants from 1 organization whose IRS filings report $1,000 to it, the largest being McNabb Foundation ($1,000). 0 of them have funded it in more than one year.
- How many funders does Hertwig Haven have?
- IRS filings report 1 organization giving $1,000 in grants to Hertwig Haven.
- Who is the largest funder of Hertwig Haven?
- McNabb Foundation is the largest funder on record, with $1,000 in grants. The full list of funders is on this page.
- How can an organization like Hertwig Haven find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in California. 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 Hertwig Haven →
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 1 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