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Massen Greene Foundation at a glanceMostly funded, not a grantmaker: see who funds it →

· Private foundation

Massen Greene Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$745k
Granted FY2025still arriving
9
Grants FY2025still arriving
1
States reached
$140k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0199% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Environment$3.0MAnimals$2.0MRecreation & Sports$855kYouth Development$625kReligion$245kEducation$155kScience & Tech$145kPhilanthropy$75kOther$0
02FY2025 · 9 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • $10k–50k1 grant · $30k
  • $50k–250k8 grants · $715k
$75,000
Median grant
1
States reached
$11M
Total assets
Largest grants
RecipientAmount
ENVIRONMENTAL NATURE CENTER$140,000
LAGUNA CANYON FOUNDATION$130,000
PACIFIC MARINE MAMMAL CENTER$115,000
ALGALITA MARINE RESEARCH & EDUCATION$105,000
BOYS AND GIRLS CLUB OF LAGUNA BEACH$75,000
GET INSPIRED$50,000
PROJECT 3R$50,000
THE ECOLOGY CENTER$50,000
RANCHO SANTA ANA BOTANIC GARDEN DBA CALIFORNIA BOTANIC GARDEN$30,000
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 (FY17–25) land where the poverty rate runs at 11%, against an area that typically sits at 11%. 16% of its dollars go to grantees based in above-average-need neighborhoods. Its grants skew toward lower-need ZIPs.

area typical 11%GET INSPIRED: $50k → 10%ALGALITA MARINE RESEARCH & EDUCATION: $105k → 14%HAWAII WILDLIFE FUND: $70k → 9%ALGALITA MARINE RESEARCH & EDUCATION: $90k → 14%HAWAII WILDLIFE FUND: $50k → 9%ALGALITA MARINE RESEARCH & EDUCATION: $65k → 14%HAWAII WILDLIFE FUND: $50k → 9%ALGALITA MARINE RESEARCH & EDUCATION: $65k → 14%HAWAII WILDLIFE FUND: $40k → 9%ALGALITA MARINE RESEARCH & EDUCATION: $63k → 14%HAWAII WILDLIFE FUND: $40k → 9%ALGALITA MARINE RESEARCH & EDUCATION: $55k → 14%ENVIRONMENTAL NATURE CENTER: $140k → 10%ALGALITA MARINE RESEARCH & EDUCATION: $48k → 14%ENVIRONMENTAL NATURE CENTER: $90k → 10%ENVIRONMENTAL NATURE CENTER: $70k → 10%ENVIRONMENTAL NATURE CENTER: $63k → 10%RANCHO SANTA ANA BOTANIC GARDENS DBA CALIFORNIA BOTANIC GARDEN: $95k → 14%ENVIRONMENTAL NATURE CENTER: $52k → 10%RANCHO SANTA ANA BOTANIC GARDEN DBA CALIFORNIA BOTANIC GARDEN: $50k → 14%RANCHO SANTA ANA BOTANIC GARDEN: $45k → 14%OCEAN INSTITUTE: $175k → 10%PACIFIC MARINE MAMMAL CENTER: $560k → 10%PACIFIC MARINE MAMMAL CENTER: $440k → 10%PACIFIC MARINE MAMMAL CENTER: $120k → 10%PACIFIC MARINE MAMMAL CENTER: $115k → 10%PACIFIC MARINE MAMMAL CENTER: $115k → 10%PACIFIC MARINE MAMMAL CENTER: $113k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $100k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $75k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $75k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $75k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $75k → 10%PACIFIC MARINE MAMMAL CENTER: $75k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $75k → 10%PACIFIC MARINE MAMMAL CENTER: $75k → 10%PACIFIC MARINE MAMMAL CENTER: $50k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $50k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $50k → 10%BOYS AND GIRLS CLUB OF LAGUNA BEACH: $50k → 10%CRYSTAL COVE ALLIANCE: $175k → 10%CRYSTAL COVE CONSERVANCY: $170k → 10%CRYSTAL COVE CONSERVANCY: $160k → 10%CRYSTAL COVE ALLIANCE: $150k → 10%CRYSTAL COVE CONSERVANCY: $100k → 10%CRYSTAL COVE CONSERVANCY: $100k → 10%PROJECT 3R: $50k → 10%THE ECOLOGY CENTER: $50k → 10%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.

99%of every dollar goes to organizations it has funded before.
$7.0M · 15 repeat orgs$105k to everyone else

15 repeat relationships: 8 still active in FY2025, 7 since wound down; 1 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

15
3

Total granted

$7.0M
$55k

Median revenue growth · since first grant

+51%
+76%

Still filing today

93%
33%

New vs renewed · share of each year

In FY2025, 93% of grant dollars renewed an existing relationship; $50k went to new ones.

50%100%’17’18’19’20’21’22’23’24’25
RenewedFirst-time

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

’17’18’19’20’21’22’23’24’25
EnvironmentAnimalsRecreation & SportsYouth DevelopmentScience & TechReligionOther
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

  • FO
    FRIENDS OF THE SEA LIONS INC DBA PACIFIC MARINE MAMMAL CENTER
    9× · 2017–2025 · $1.7M · revenue +51%
  • LC
    LAGUNA CANYON FOUNDATION
    9× · 2017–2025 · $1.3M · revenue +10%
  • CC
    CRYSTAL COVE CONSERVANCY
    6× · 2017–2022 · $855k · revenue +266%

Funded once

  • IG
    Individual grant recipient
    one grant, 2020 · $25k
  • BT
    BACK TO NATIVES RESTORATION
    one grant, 2018 · $25k
  • FO
    FRIENDS OF THE HORTENSE MILLER GARDEN INCgraduated
    one grant, 2023 · $5k · revenue +76%
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

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
Nature Collective

Nature collective's mission is to drive a passion for nature for all. we think inclusively and diversely when serving those devoid of nature those who remember nature and want to connect back to it and those who have an affinity with…

Environment
2
California Wildlife Foundation

The foundation works with diverse groups representing many interests to acquire and restore critical wildlife habitat and protecting species

Animals
3
The Nature School

The nature school protects endangered aquatic species of california's central coast and restores riparian habitats. the nature school also provides education of science and environmental studies.

Environment
4
Monterey Bay Aquarium Research Institute
—
5
Ballona Wetlands Conservancy

The preservation and maintenance of environmentally sensitive coastal wetlands.

Environment
6
Save Oceanside Sand

Save Oceanside Sand is a group of local activists dedicated to restoring and preserving the beaches of Oceanside, California. Working with local, regional, state, and federal authorities, our mission is to protect this vital resource by…

Education
7
The Coral Reef and Marine Science Foundation Inc C/O James Bildner
—
8
Greater Farallones Association

Gfa works in partnership with and on behalf of the greater farallones and cordell bank national marine sanctuaries to preserve, monitor, research, educate about and enhance these invaluable marine resources.

Animals
9
Pacific Coast Environmental Conservancy

Organization was able to support efforts for the protection and sustainability of the unique pacific coast environments

Environment
10
Coastal Conservation & Research

Provide scientific, environmental research and education for environmental conservation, preservation, restoration, recycling, and environmental planning

Environment
11
Environmental Defense Center

The organization protects and enhances the local environment through education, advocacy and legal action.

Crime & Legal
12
California Institute of Environmental Studies

The institute is dedicated to scientific research, the results of which are used to promote public awareness and education in the areas of conservation biology and ecology,including the wise use of natural resources.

Animals
How this is measured
The grantee most central to the portfolio’s shape is Laguna Canyon Foundation; the most unlike its peers is Friends of the Hortense Miller Garden Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

17 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. 17 of the 20 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.

1
Load-bearing (≥25% of a budget)
9
Early backer (in before they grew)
17/17
Grantees still filing
14/17
Grew since first funded

Where the money sits, by cause and then by grantee

LAGUNA CANYON FOUNDATION: $1,257,500 · EnvironmentLAGUNA CANYON FOUNDATIONENVIRONMENTAL NATURE CENTER: $564,500 · EnvironmentENVIRONMENTAL NATURE CENTERRANCHO SANTA ANA BOTANIC GARDEN: $385,015 · EnvironmentRANCHO SANTA ANA BOTANIC GARDENHAWAII WILDLIFE FUND: $330,000 · EnvironmentHAWAII WILDLIFE FUNDGET INSPIRED: $145,000 · EnvironmentPROJECT3R: $130,000 · Environment+2 more: $100,000 · EnvironmentFRIENDS OF THE SEA LIONS INC DBA PACIFIC MARINE MAMMAL CENTER: $1,662,500 · AnimalsFRIENDS OF THE SEA LIONS I…CRYSTAL COVE CONSERVANCY: $855,000 · Recreation & SportsCRYSTAL COVE …BOYS & GIRLS CLUB OF LAGUNA BEACH: $625,000 · Youth DevelopmentBOYS & GI…ALGALITA MARINE RESEARCH AND EDUCATION: $533,000 · Science & TechOCEAN INSTITUTE: $245,000 · ReligionLAGUNA BEACH HIGH SCHOOL SCHOLARSHIP FOUNDATION: $155,000 · EducationHORTENSE MILLER GARDEN: $60,000 · OtherIndividual grant recipient: $25,000 · OtherBACK TO NATIVES RESTORATION: $25,000 · OtherLaguna Beach Community Foundation: $75,000 · OtherLAGUNA ART MUSEUM: $30,000 · Other+1 more: $5,000 · Other
Environment$2,912,015Animals$1,662,500Recreation & Sports$855,000Youth Development$625,000Science & Tech$533,000Religion$245,000Education$155,000Other$220,000

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

25%50%75%100%$1.0M$10Mgrantee revenue →↑ funder's share of their budgetFRIENDS OF THE SEA LIONS INC DBA PACIFIC MARINE MAMMAL CENTER: $1,662,500 over 9y, 12% of budgetLAGUNA CANYON FOUNDATION: $1,257,500 over 9y, 16% of budgetCRYSTAL COVE CONSERVANCY: $855,000 over 6y, 14% of budgetBOYS & GIRLS CLUB OF LAGUNA BEACH: $625,000 over 9y, 5.5% of budgetENVIRONMENTAL NATURE CENTER: $564,500 over 9y, 4.2% of budgetALGALITA MARINE RESEARCH AND EDUCATION: $533,000 over 9y, 19% of budgetRANCHO SANTA ANA BOTANIC GARDEN: $385,015 over 9y, 2.6% of budgetHAWAII WILDLIFE FUND: $330,000 over 8y, 17% of budgetOCEAN INSTITUTE: $245,000 over 4y, 3.1% of budgetLAGUNA BEACH HIGH SCHOOL SCHOLARSHIP FOUNDATION: $155,000 over 5y, 8.2% of budgetGET INSPIRED: $145,000 over 6y, 14% of budgetPROJECT3R: $130,000 over 4y, 69% of budgetLaguna Beach Community Foundation: $75,000 over 1y, 9.7% of budgetHUNTINGTON BEACH WETLANDS CONSERVANCY: $50,000 over 2y, 19% of budgetLAGUNA ART MUSEUM: $30,000 over 2y, 0.6% of budgetFRIENDS OF THE HORTENSE MILLER GARDEN INC: $5,000 over 1y, 5.1% 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.

  • Who funds FRIENDS OF THE SEA LIONS INC DBA PACIFIC MARINE MAMMAL CENTER ↗
  • Who funds LAGUNA CANYON FOUNDATION ↗
  • Who funds CRYSTAL COVE CONSERVANCY ↗
  • Who funds BOYS & GIRLS CLUB OF LAGUNA BEACH ↗
  • Who funds ENVIRONMENTAL NATURE CENTER ↗
  • Who funds ALGALITA MARINE RESEARCH AND EDUCATION ↗
  • Who funds RANCHO SANTA ANA BOTANIC GARDEN ↗
  • Who funds HAWAII WILDLIFE FUND ↗
  • Who funds OCEAN INSTITUTE ↗
  • Who funds LAGUNA BEACH HIGH SCHOOL SCHOLARSHIP FOUNDATION ↗
  • Who funds GET INSPIRED ↗
  • Who funds PROJECT3R ↗
  • Who funds Laguna Beach Community Foundation ↗
  • Who funds ECOLOGY CENTER ↗
  • Who funds HUNTINGTON BEACH WETLANDS CONSERVANCY ↗
  • Who funds LAGUNA ART MUSEUM ↗
  • Who funds FRIENDS OF THE HORTENSE MILLER GARDEN INC ↗

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.

Orange County Communi…Macgillivray Family F…Laguna Beach Communit…PatagoniaorgWeaver Family Private…The Hanauer Family Fo…Roberta Freeman Cox C…The Hexberg Family Fo…Ueberroth Family Foun…Croul Family Foundati…Foundation for Sustai…The Offield Family Fo…
Orange County Community FoundationCA28.8× affinity12 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Orange County Community Foundation · Macgillivray Family Foundation · Laguna Beach Community Foundation · Patagoniaorg · Weaver Family Private Foundation · The Hanauer Family Foundation · Roberta Freeman Cox Charitable Foundation · The Hexberg Family Foundation · Ueberroth Family Foundation · Croul Family Foundation · Foundation for Sustainability and Innovation · The Offield Family Foundation

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 Massen Greene Foundation funds: left to right is the share of its income from government, bottom to top the share from Massen Greene Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 00%5%19%42%75%funder's share of their income ↑0%8%15%22%30%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    7report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–30%
    typical government reliance, FY20–25
    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.
    05Through Plinth

    Warm introductions · Powered by PlinthPlus

    How do I get to Massen Greene Foundation?

    Find your warmest path to Massen Greene Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.

    Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.

    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 20 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-PF 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

    Play a game based on Massen Greene’s filings →

    More from the funding graph

    The unnamed billions
    grants reported with no recipient in the public record
    The regranting layer
    51% of grant dollars land in the regranting layer
    The DAF merry-go-round
    $9.7B circulates between donor-advised funds
    The endowment market
    who holds foundation money, and what just moved
    The camps
    funders cluster by geography, not ideology
    By state
    where grant money is based, and what stays home