California · Nonprofit
THE HEINLEIN SOCIETY
THE HEINLEIN SOCIETY (California) receives grants from 4 organizations whose IRS filings report $31,607 to it, the largest being ROBERT A & VIRGINIA HEINLEIN PRIZE TRUST ($27,106). 4 of them have funded it in more than one year.
Against its field
THE HEINLEIN SOCIETY's revenue fell 43% between 2022 and 2025.
this organization peer median middle 50% of peers· 16,609 education nonprofits under $100k, FY2025
Three funders worth looking at
Grantmakers with no record of funding this organization, ranked by how strongly the co-funder graph and the mission embeddings agree. The evidence is in section 03.
- The Everglades Foundation Incshared funders
- Newwave Foundationportfolio match
- DiPaolo Family Charitable Foundation Incportfolio match
The organization over time
Each line starts at 100 in 2022, so what you read is the shape rather than the size: 150 means half as much again as 2022, 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.
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.
77% of THE HEINLEIN SOCIETY’s revenue is contributions — more donation-reliant than the typical peer (65% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 4 reported years ran a deficit.
Who funds it, year by year
2017 → 2023: the base broadened from 1 funder to 2 funders, grant income fell $5k → $904.
1 of 4 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 5% 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 THE HEINLEIN SOCIETY’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
THE HEINLEIN SOCIETY leans on a few funders — its largest provides 86% of grant income and the top three 97%; 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 100% · 2019 100% · 2020 96% · 2021 86% · 2022 75% · 2023 55% — 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.
Where its funders are
THE HEINLEIN SOCIETY draws 100% of its grant income from funders outside California, across 3 states in all.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $2k arriving through sponsors registered in 1 state 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.
Funders to approach
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first.
- The Everglades Foundation Incshared fundersFL · backs 5 organizations that share your funders
- Newwave Foundationportfolio matchits grantees resemble your mission
- DiPaolo Family Charitable Foundation Incportfolio matchits grantees resemble your mission
- Amateur Radio Digital Communicationsportfolio matchits grantees resemble your mission
- A Frederick Banfield Charitable Trustportfolio matchits grantees resemble your mission
- Stacy L and David W Schulz Family Foundationportfolio matchits grantees resemble your mission
- Arlette & William J Coleman Family Foundation Incportfolio matchits grantees resemble your mission
- The Ellen and Ian Graham Charitable Foundation U/A 12-18-2004portfolio matchits grantees resemble your mission
- Building Futures Foundationportfolio matchits grantees resemble your mission
- The Cotton Charitable Foundationportfolio matchits grantees resemble your mission
- For Inspiration and Recognition of Science and Technology (FIRST)portfolio matchits grantees resemble your mission
- Chensteino'Malleysven Foundationportfolio matchits grantees resemble your mission
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Organizations like THE HEINLEIN SOCIETY
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of 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.
Public support
97%
Share of support from the public (Schedule A) — the basis for its public-charity status.
Screen this organization
A dated, signed PDF of the compliance screen for THE HEINLEIN 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. How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds THE HEINLEIN SOCIETY?
- THE HEINLEIN SOCIETY (California) receives grants from 4 organizations whose IRS filings report $31,607 to it, the largest being ROBERT A & VIRGINIA HEINLEIN PRIZE TRUST ($27,106). 4 of them have funded it in more than one year.
- How many funders does THE HEINLEIN SOCIETY have?
- IRS filings report 4 organizations giving $31,607 in grants to THE HEINLEIN SOCIETY, 4 of which have funded it in more than one year.
- Who is the largest funder of THE HEINLEIN SOCIETY?
- ROBERT A & VIRGINIA HEINLEIN PRIZE TRUST is the largest funder on record, with $27,106 in grants. The full list of funders is on this page.
- How can an organization like THE HEINLEIN SOCIETY 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.
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2022–2025), and the filings of 4funders 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 August 27, 2026. What this page cannot tell you · view filing