Maine · Nonprofit
CASTINE SCIENTIFIC SOCIETY
CASTINE SCIENTIFIC SOCIETY (Maine) receives grants from 3 organizations whose IRS filings report $66,550 to it, the largest being ISLAND FOUNDATION INC ($30,000). 2 of them have funded it in more than one year, and 55% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2024
- $1.2M
- Funders on record
- 3
- Grants received
- $67k
- Net assets
- $22M
What Castine Scientific Society does
Mission
Cultivating and encouraging human connection across place, time, and cultures.
As stated on its FY2024 Form 990.
Programs
Wilson museum - care, maintenance, administration and interpretation of a 4,500 square foot museum and worldwide collections from prehistory to the present day including educational service such as publications, lectures, demonstrations, and website. Open from may 27 to september 30, groups by appointment during the off-season. Museum attendance of 3,500.
$396,056 spent87% of program spendingEducation center & demonstration/exhibit area - care, maintenance, and interpretation of exhibition/demonstration buildings, a fully functional 19th century smithy, and a 3,000 square foot education center where educational services such as lectures, demonstrations and exhibits are offered on a year-round basis. Approximate education center & demonstration exhibit area attendance of 1,600.
$18,093 spent4% of program spendingJohn & phebe perkins house, perkins gallery & museum store - care, maintenance, and interpretation of exhibition, museum store and a 2 story colonial home, built in 1763/83 which is on the national register of historic places, as well as the care of the collections within, including family heirlooms, local artifacts, and period pieces. Historic home open july and august and by appointment with guided tours and demonstrations such as fireside cooking. Gallery & museum store open may 27th to september 30th, groups by appointment during the off-season. Perkins house, gallery & museum store attendance of 1,750.
$5,853 spent1% of program spendingOther program services - outreach to area schools and community organizations. Approximately 150 persons impacted.
$34,675 spent8% of program spending
The 4 programs described on its FY2023 Form 990, listed largest first by expense. Program spending in total: $454,677.
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 2021 to 2022, from $22M to $20M (−11%).
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.
7% of CASTINE SCIENTIFIC SOCIETY’s revenue is contributions — more earned-revenue than three-quarters of its peers (63% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 2 of the last 8 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
2020 → 2023: the base broadened from 1 funder to 3 funders, grant income rose $5k → $29k.
2 of 3 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 55% 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 CASTINE SCIENTIFIC 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
CASTINE SCIENTIFIC SOCIETY leans on a few funders — its largest provides 45% of grant income and the top three 100%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
55% 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 CASTINE SCIENTIFIC SOCIETY.
Largest funder’s share by year: 2020 100% · 2021 100% · 2022 100% · 2023 51% — 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
55% of CASTINE SCIENTIFIC SOCIETY's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $30k that is directly attributable, 100% of it comes from funders outside Maine, across 1 state.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $37k 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.
Against its field
CASTINE SCIENTIFIC SOCIETY runs a healthier operating margin than three-quarters of the 5,127 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 5,127 arts & culture nonprofits $1M–$10M, FY2024
Government funding CASTINE SCIENTIFIC SOCIETY receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $110k on record.
- Department of the Interior$91k
- National Endowment for the Humanities$19k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like CASTINE SCIENTIFIC 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 Maine
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
67% of spending goes to programs.
Governance
Public support
25%
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 CASTINE SCIENTIFIC 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 CASTINE SCIENTIFIC SOCIETY?
- CASTINE SCIENTIFIC SOCIETY (Maine) receives grants from 3 organizations whose IRS filings report $66,550 to it, the largest being ISLAND FOUNDATION INC ($30,000). 2 of them have funded it in more than one year, and 55% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does CASTINE SCIENTIFIC SOCIETY have?
- IRS filings report 3 organizations giving $66,550 in grants to CASTINE SCIENTIFIC SOCIETY, 2 of which have funded it in more than one year.
- Who is the largest funder of CASTINE SCIENTIFIC SOCIETY?
- ISLAND FOUNDATION INC is the largest funder on record, with $30,000 in grants. The full list of funders is on this page.
- How can an organization like CASTINE SCIENTIFIC SOCIETY find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Maine. 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 FY2024 (financials across 2017–2024), and the filings of 3 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