Massachusetts · Nonprofit
CHATHAM MARCONI MARITIME CENTER INC
CHATHAM MARCONI MARITIME CENTER INC (Massachusetts) receives grants from 15 organizations whose IRS filings report $276,605 to it, the largest being THE ROESSNER FAMILY FOUNDATION INC ($80,000). 7 of them have funded it in more than one year.
- Revenue FY2025
- $286k
- Funders on record
- 15
- Grants received
- $277k
- Net assets
- $1.3M
What Chatham Marconi Maritime Center Inc does
Mission
Chatham marconi maritime center preserves the history of chatham radio/wcc and celebrates 20th century maritime communication through interpretive museum exhibits, educational programs and community engagement.
As stated on its FY2025 Form 990.
Programs
The marconi-rca wireless museum is the core of the center's mission and operations, preserving the unique history of maritime wireless telegraphy which began when in 1914 radio pioneer guglielmo marconi's company built a transatlantic wireless receiving station in north chatham, massachusetts. The museum curates exhibits on marconi's cape cod legacy; on ship-to-shore wireless telegraphy as employed the radio corporation of america for most of the 20th century operating as chatham radio/wcc; and on the site's wwii wartime role as the us navy's "station c" which eavesdropped on german u- boat radio transmissions. In 2025, the center invested in a major professionally-produced interpretive exhibit about life in chatham during wwii. The museum served 4,000 visitors and students in 2025. Museum operations are funded by a combination of visitor admission fees, designated donations and grants received, member dues and merchandise sales.
$131,315 spent$31,940 earned by the program86% of program spendingIn its fourth year of connecting children with the science behind the technology of their wireless world, chatham marconi techsmart is a classroom-based stem enrichment program designed to augment the massachusetts' fourth-grade science curriculum standards with communication science stem lessons taught by chatham marconi's education specialist. The lessons were supplemented by a field trip to the center's campus for additional hands-on experiments and a museum tour. Seven cape cod elementary and middle schools participated in this program, which serves approximately 400 fourth-grade students each year by expanding their understanding of the science behind modern communications. It is funded through designated grants and private donations.
$15,030 spent10% of program spendingChatham marconi summer stem inspires children in kindergarten through grade nine to explore concepts and theories through hands-on activities designed to promote a love of stem learning. Located in the education center on the chatham marconi campus, this program offers families a selection of multi-day, three-hour classes during july and august and highlights communications science, aligning with the center's mission to preserve the history of maritime wireless telegraphy. Each summer the program serves approximately 100 elementary and middle school children who live on or are visiting cape cod. Summer stem is funded through tuition fees that may be supplemented, when necessary, by designated education donations.
$7,203 spent$15,738 earned by the program5% of program spending
The 3 programs described on its FY2025 Form 990, listed largest first by expense. Program spending in total: $153,548.
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 2020 to 2021, from $1.0M to $1.2M (+19%).
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: 2020 5% · 2021 5% · 2023 38% · 2024 9% · 2025 13%. Grants only. Government contracts and fees sit inside program revenue.
60% of CHATHAM MARCONI MARITIME CENTER INC’s revenue is contributions — about as donation-reliant as the typical peer (64% 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
2017 → 2023: the base broadened from 4 funders to 5 funders, grant income rose $14k → $47k.
3 of 15 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 26% 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 CHATHAM MARCONI MARITIME CENTER INC’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
CHATHAM MARCONI MARITIME CENTER INC leans on a few funders — its largest provides 29% of grant income and the top three 69%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
26% 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 CHATHAM MARCONI MARITIME CENTER INC.
Largest funder’s share by year: 2017 71% · 2018 40% · 2019 51% · 2020 64% · 2021 37% · 2022 44% · 2023 43% — 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
44% of CHATHAM MARCONI MARITIME CENTER INC's funders are still giving 3 years after their first grant; 47% 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
64% of CHATHAM MARCONI MARITIME CENTER INC's grant income comes from Massachusetts funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $73k 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
CHATHAM MARCONI MARITIME CENTER INC holds deeper cash reserves than three-quarters of the 11,634 arts & culture nonprofits its size.
this organization peer median middle 50% of peers· 11,634 arts & culture nonprofits $100k–$1M, FY2025
Government funding CHATHAM MARCONI MARITIME CENTER INC receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $3k on record.
- (PP) STATE AID/POL SUB$3k
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 CHATHAM MARCONI MARITIME CENTER INC
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 Massachusetts
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
64% of spending goes to programs.
Governance
Public support
91%
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 CHATHAM MARCONI MARITIME CENTER INC: 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 CHATHAM MARCONI MARITIME CENTER INC?
- CHATHAM MARCONI MARITIME CENTER INC (Massachusetts) receives grants from 15 organizations whose IRS filings report $276,605 to it, the largest being THE ROESSNER FAMILY FOUNDATION INC ($80,000). 7 of them have funded it in more than one year.
- How many funders does CHATHAM MARCONI MARITIME CENTER INC have?
- IRS filings report 15 organizations giving $276,605 in grants to CHATHAM MARCONI MARITIME CENTER INC, 7 of which have funded it in more than one year.
- Who is the largest funder of CHATHAM MARCONI MARITIME CENTER INC?
- THE ROESSNER FAMILY FOUNDATION INC is the largest funder on record, with $80,000 in grants. The full list of funders is on this page.
- How can an organization like CHATHAM MARCONI MARITIME CENTER INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Massachusetts. 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 Chatham Marconi Maritime Center →
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 15 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