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Great Harbor Yacht Club Foundation Inc at a glanceMostly funded, not a grantmaker: see who funds it →

· Public charity

Great Harbor Yacht Club Foundation Inc

The purpose of the corporation is to act as a not-for-profit organization with a primary mission of promoting the health of nantucket islands harbor and its marine ecosystem.

$298k
Granted FY2025still arriving
7
Grants FY2025still arriving
1
States reached
$95k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
01100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2022 to 2025.

Environment$534kYouth Development$43kEducation$25kFood & Nutrition$21kHealth$15kRecreation & Sports$11k
02FY2025 · 7 grants

Where the money goes

Grants by size, and the largest recipients.

How this is measured
The 7 grants below total $285,431, the rows itemized in this filing. The $297,731 headline is the total grant expense on the return; the other $12,300 is giving the schedule does not break out (grants under the $5,000 itemization floor, grants to individuals, grants on other schedules). Every figure below describes the itemized rows only.

By grant size · FY2025

  • $10k–50k5 grants · $113k
  • $50k–250k2 grants · $173k
$30,000
Median grant
1
States reached
$3.9M
Total assets
Largest grants
RecipientAmount
TOWN OF NANTUCKET NATURAL RESOURCE DEPT$95,350
MARIA MITCHELL ASSOCIATION$77,500
NANTUCKET CONSERVATION FOUNDATION$35,040
Individual grant recipient$30,000
NANTUCKET SHELLFISH ASSOCIATION$21,000
UMASS BOSTON SCHOOL FOR THE ENVIRONMENT$15,581
NANTUCKET COMMUNITY SAILING INC$10,960
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Dollar for dollar, its grants (FY22–25) land where the poverty rate runs at 7%, against an area that typically sits at 5%. 100% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 5%TOWN OF NANTUCKET NATURAL RESOURCE DEPT: $99k → 6%UMASS BOSTON SCHOOL FOR THE ENVIRONMENT: $16k → 16%TOWN OF NANTUCKET NATURAL RESOURCE DEPT: $95k → 6%MARIA MITCHELL ASSOCIATION: $85k → 6%MARIA MITCHELL ASSOCIATION: $78k → 6%TOWN OF NANTUCKET NATURAL RESOURCE DEPT: $66k → 6%NANTUCKET LAND & WATER COUNCIL: $38k → 6%NANTUCKET CONSERVATION FOUNDATION: $35k → 6%NANTUCKET FIELD STATION - UMASS: $30k → 6%NANTUCKET PUBLIC SCHOOL: $25k → 6%TOWN OF NANTUCKET NATURAL RESOURCE DEPT: $24k → 6%NANTUCKET SHELLFISH ASSOCIATION: $21k → 6%NANTUCKET FIELD STATION - UMASS: $13k → 6%MARIA MITCHELL ASSOCIATION: $12k → 6%NANTUCKET COMMUNITY SAILING INC: $11k → 6%EGAN MARITIME INSTITUTE: $3k → 6%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

77%of every dollar goes to organizations it has funded before.
$501k · 3 repeat orgs$148k to everyone else

Grantees it renews have grown median revenue +38% since the first grant, against 0% for those funded once.

3 repeat relationships: 3 still active in FY2025, 0 since wound down; 4 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

3
3

Total granted

$501k
$66k

Median revenue growth · since first grant

+38%
0%

Still filing today

33%
67%

New vs renewed · share of each year

In FY2025, 71% of grant dollars renewed an existing relationship; $83k went to new ones.

50%100%’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’22’23’24’25
EnvironmentHealthScience & TechRecreation & SportsOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.

Backed again, and grew

  • TO
    TOWN OF NANTUCKET NATURAL RESOURCE DEPT
    3× · 2022–2025 · $284k
  • NM
    NANTUCKET MARIA MITCHELL ASSOCIATION IN
    3× · 2023–2025 · $174k · revenue +38%
  • IG
    Individual grant recipient
    2× · 2024–2025 · $43k

Funded once

  • NL
    NANTUCKET LAND & WATER COUNCIL INC
    one grant, 2024 · $38k · revenue 0%
  • NP
    NANTUCKET PUBLIC SCHOOL
    one grant, 2023 · $25k
  • TA
    THE ALBERT F EGAN JR & DOROTHY H EGAN F
    one grant, 2024 · $3k · revenue 0%
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field
04the grantee network

6 grantees tracked through their own filings, 2017–2025.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 6 of the 10 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
2
Early backer (in before they grew)
6/6
Grantees still filing
3/6
Grew since first funded

Where the money sits, by cause and then by grantee

TOWN OF NANTUCKET NATURAL RESOURCE DEPT: $283,722 · OtherTOWN OF NANTUCKET NATURAL RESOURCE DEPTNANTUCKET MARIA MITCHELL ASSOCIATION IN: $174,315 · OtherNANTUCKET MARIA MITCHELL ASSOCIATION INIndividual grant recipient: $43,000 · OtherIndividual grant recipientNANTUCKET PUBLIC SCHOOL: $25,487 · Other+1 more: $15,581 · OtherNANTUCKET LAND & WATER COUNCIL INC: $37,500 · EnvironmentNANTUCKET LA…NANTUCKET CONSERVATION FOUNDATION INC: $35,040 · EnvironmentNANTUCKET CO…NANTUCKET SHELLFISH ASSOCIATION INC: $21,000 · Science & TechNANTUCKET COMMUNITY SAILING INC: $10,960 · Recreation & SportsTHE ALBERT F EGAN JR & DOROTHY H EGAN F: $2,600 · Health
Other$542,105Environment$72,540Science & Tech$21,000Recreation & Sports$10,960Health$2,600

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%grantee revenue →↑ funder's share of their budgetNANTUCKET MARIA MITCHELL ASSOCIATION IN: $174,315 over 3y, 2.1% of budgetNANTUCKET LAND & WATER COUNCIL INC: $37,500 over 1y, 2.0% of budgetTHE ALBERT F EGAN JR & DOROTHY H EGAN F: $2,600 over 1y, 0.2% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Carverdelaney Familie…Community Foundation …Fidelity Investments …
Carverdelaney Families Foundation IncNJ13.6× affinity4 shared granteesties to 2 of 2Hover any node to trace its alignments.Compare side by side →

Open a dossier: Carverdelaney Families Foundation Inc · Community Foundation for Nantucket Inc · Fidelity Investments Charitable Gift Fund

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization Great Harbor Yacht Club Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from Great Harbor Yacht Club Foundation Inc. Bigger dots raise more.

2023
’20’21’22’23’24
no gov · 40%0%1%3%5%funder's share of their income ↑0%5%10%15%20%share of the org’s income from government →median 4%
  • Nantucket Maria Mitchell Association in: 4% of income from government
  • Nantucket Conservation Foundation Inc: 0% of income from government
no gov moneyreceives it· size = income
4get no government money at all
0rely on government for over half their income
⤢ axis zoomed · 0–20%
typical government reliance, FY20–24
How this is measured
Government income is each org’s traced federal awards (USASpending grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that a grant caused the public funding. Coverage is precision-first, a floor rather than a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12 to 24 months.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 10 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990 e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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More from the funding graph

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who holds foundation money, and what just moved
The camps
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By state
where grant money is based, and what stays home