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Willliam H & Mattie Wattis Harris Foundation at a glance

· Private foundation

Willliam H & Mattie Wattis Harris Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$740k
Granted FY2025still arriving
108
Grants FY2025still arriving
21
States reached
$51k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0192% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2024.

Animals$155kEnvironment$91kArts & Culture$75kHuman Services$61kHealth$53kEducation$44kYouth Development$35kRecreation & Sports$28kOther$0
02FY2025 · 108 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k80 grants · $346k
  • $10k–50k27 grants · $344k
  • $50k–250k1 grant · $51k
$5,000
Median grant
21
States reached
$3.0M
Total assets
Largest grants
RecipientAmount
YMCA OF ROME-FLOYD COUNTY$51,000
BLUE ROSE RANCH$24,000
PLANNED PARENTHOOD MAR MONTE$22,000
SAVE THE MANATEE$18,500
HABITAT FOR HUMANITY- ATLANTA$15,000
PFLEGER INSTITUTE OF ENVIRONMENTAL$15,000
ST JOHNS COLLEGE$15,000
SOSA - SAFE FROM ONLINE SEX ABUSE$15,000
WOLF SANCTUARY$14,000
Individual grant recipient$14,000
NATIONAL DANCE INSTITUTE OF$14,000
WOMEN'S HEALTH INNOVATIONS$13,000
WEBER STATE UNIVERSITY$12,000
PUNAHAU SCHOOL$12,000
PROJECT GRIPH$10,000
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:

Its human-services grants (FY24–25, $40k) land where the poverty rate runs at 9%, against an area that typically sits at 9%. 49% of those dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.

area typical 9%ARIZONA FRIENDS OF FOSTER CHILDREN: $10k → 11%TRI COUNTY WILDFIRE CARE: $6k → 10%CAMP MORE: $10k → 8%YOUTHZONE: $7k → 8%MID-CITY CONCERNS INC: $2k → 12%RAINFOREST RISING INC: $4k → 9%PRIDE TREE: $1k → 13%PROJECT MARILYN: $1k → 13%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.

Which US states its grants reach

WA
ID
MT
MN
NY
OR
NV
NJ
CT
CA
UT
CO
KY
VA
MD
AZ
NM
DC
HI
AL
GA
TX
FL
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.

56%of every dollar goes to organizations it has funded before.
$769k · 55 repeat orgs$602k to everyone else

55 repeat relationships: 52 still active in FY2025, 3 since wound down; 55 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

55
70

Total granted

$769k
$264k

Median revenue growth · since first grant

+17%
+18%

Still filing today

71%
67%

New vs renewed · share of each year

In FY2025, 54% of grant dollars renewed an existing relationship; $338k went to new ones.

50%100%’20’23’24’25
RenewedFirst-time

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

’20’23’24’25
AnimalsEnvironmentArts & CultureHealthHuman ServicesEducationOther
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

  • GG
    GROWING GARDENS OF BOULDER COUNTY
    3× · 2020–2025 · $26k · revenue +99%
  • PS
    PUNAHOU SCHOOL
    2× · 2024–2025 · $26k · revenue +9%
  • RM
    ROCKY MOUNTAIN PLANNED PARENTHOOD INC
    3× · 2020–2025 · $19k · revenue +32%

Funded once

  • PF
    PABLOVE FOUNDATION INC
    one grant, 2024 · $11k · revenue 0%
  • GG
    GREATER GALLATIN UNITED WAY INC
    one grant, 2024 · $8k · revenue +20%
  • TC
    The Childrens Lifesaving Foundation
    one grant, 2024 · $8k · 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

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
Rocky Mountain Wild

Rocky mountain wild works to protect, connect, and restore wildlife and wild lands in the southern rocky mountain region. we work to secure the biodiversity of the mountains, plains, and desert ecosystems of colorado, wyoming, utah, and…

Environment
2
Denver Zoological Foundation

Inspiring communities to save wildlife for future generations.

Animals
3
World Wildlife Fund Inc

Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)

Environment
4
Rainforest Trust

Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.

International
5
Sky Island Alliance

We work to connect people, wildlife, and lands across the u.s.-mexico border through the use of science, advocacy, educational activities, community engagement, and on-the-ground conservation initiatives. our main activities include…

Environment
6
Defenders of Wildlife

Defenders of Wildlife is a national, nonprofit membership organization dedicated to the protection of all native animals and plants in their natural communities.

Animals
7
The California Wildlife Center

The california wildlife center (cwc) takes responsibility for the protection of all native wildlife through rehabilitiation, education and conservation. as the los angeles area's premier wildlife medical care and rehabilitation facility,…

Health
8
The Wildlands Conservancy

The Wildlands Conservancy's dual mission is to preserve the beauty and biodiversity of the earth and to provide programs so that children may know the wonder and joy of nature.

Environment
9
The Jmt Wilderness Conservancy

Working to restore the watersheds, wilderness, and wildlife in the high sierra nevada following the john muir trail (est. 1915) for all life in california.

Environment
10
Jackson Hole Wildlife Foundation

Jackson hole wildlife foundation advances wildlife conservation driven by science, collaboration, and a community of volunteers.

Animals
11
Cascadia Wildlands

Cascadia wildlands defends and restores cacasia's wild ecosystems in the forests,in the courts, and in the streets. we envision vast old-growth forests, rivers full of wild salmon, wolves howling in the backcountry, a stable climate, and…

Environment
12
Northern Jaguar Project

The mission of the northern jaguar project is to preserve and recover the world's northermost population of the jaguar, its unique natural habitat, and native wildlife under its protection as a flagship, keystone, and umbrella species.

Animals
How this is measured
The grantee most central to the portfolio’s shape is New Mexico Community Foundation; the most unlike its peers is Pfleger Institute of Environmental Research. 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

128 grantees tracked through their own filings, 2017–2026.

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 2026, not grant rows in a single year, so this will not match the grant count on the cover. 128 of the 181 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)
20
Early backer (in before they grew)
128/128
Grantees still filing
64/128
Grew since first funded

Where the money sits, by cause and then by grantee

YMCA OF ROME-FLOYD COUNTY: $100,000 · OtherYMCA OF ROME-FLOYD COUNTYIndividual grant recipient: $27,000 · OtherST JOHNS COLLEGE IN SANTA FE: $27,000 · OtherPFLEGER INSTITUTE OF ENVIRONMENTAL: $23,000 · Other+74 more: $453,657 · Other+74 moreBLUE ROSE RANCH INC: $36,000 · AnimalsBLUE ROSE RANCH INCSAVE THE MANATEE CLUB INC: $31,850 · AnimalsSAVE THE MANATEE CLUB IN…ATLANTA FULTON COUNTY ZOO INC: $18,000 · AnimalsATLANTA FULTON COUNTY ZO…ZOOLOGICAL SOCIETY OF SAN DIEGO: $16,233 · AnimalsZOOLOGICAL SOCIETY OF SA…JACKSONVILLE ZOOLOGICAL SOCIETY INC: $16,000 · AnimalsW O L F: $14,000 · AnimalsNATIONAL WILDLIFE FEDERATION: $12,000 · AnimalsINTERNATIONAL SNOW LEOPARD TRUST: $11,833 · Animals+27 more: $145,121 · Animals+27 moreGROWING GARDENS OF BOULDER COUNTY: $26,000 · EnvironmentGROWING GAR…ROCKY MOUNTAIN RAPTOR PROGRAM: $15,000 · EnvironmentROCKY MOUNT…ECOFLIGHT: $10,500 · EnvironmentECOFLIGHTEarth Guardians: $10,000 · EnvironmentEarth Guard…COLORADO OPEN LANDS: $10,000 · EnvironmentCOLORADO OP…350 COLORADO: $10,000 · Environment350 COLORAD…LOS PADRES FORESTWATCH INC: $9,000 · EnvironmentLOS PADRES …NATUREBRIDGE: $7,500 · EnvironmentTHE KIVA CENTER: $7,000 · EnvironmentTREE UTAH: $5,200 · EnvironmentASPEN CENTER FOR ENVIRONMENTAL STUDIES: $5,000 · EnvironmentTAKSHANUK WATERSHED COUNCIL: $5,000 · EnvironmentSnake River Waterkeeper Inc: $5,000 · Environment+8 more: $18,800 · Environment+8 moreJAZZ AT ASPEN-SNOWMASS: $16,000 · Arts & CultureASPEN SANTA FE BALLET: $12,000 · Arts & CultureRED HEN PRESS INC: $10,000 · Arts & CultureCOLORADO BALLET: $6,500 · Arts & CultureCANYONLANDS FIELD INSTITUTE INC: $6,000 · Arts & CultureHAMILTON PLAYERS INC: $6,000 · Arts & CultureACTORS COMPANY AND THEATER SCHOOL: $6,000 · Arts & CultureINTERNATIONAL GAME FISH ASSOCIATION INC: $5,000 · Arts & CultureBARE BAIT DANCE: $5,000 · Arts & CultureTUCSON ARIZONA BOYS CHORUS: $4,000 · Arts & Culture+8 more: $21,000 · Arts & CulturePLANNED PARENTHOOD MAR MONTE INC: $22,000 · HealthROCKY MOUNTAIN PLANNED PARENTHOOD INC: $18,500 · HealthNATIONAL DISASTER SEARCH DOG FOUNDATION: $10,000 · HealthNATIONAL JEWISH HEALTH: $9,000 · HealthNORTHERN NEVADA EMS CONSORTIUM: $6,500 · HealthEDGEWOOD CHILDREN'S RANCH INC: $5,000 · HealthCAMP NOT-A-WHEEZE: $3,500 · Health+4 more: $5,500 · HealthPUNAHOU SCHOOL: $25,917 · EducationNEW MEXICO SCHOOL FOR THE ARTS - ARTS INSTITUTE: $10,000 · EducationHOLY CROSS EDUCATION FOUNDATION: $7,500 · EducationParker Learning Gardens: $7,000 · EducationSheJumps: $7,000 · EducationOcean First Institute: $5,000 · EducationBILINGUAL EDUCATION FOR CENTRAL AMERICA: $4,000 · EducationGUIDE DOGS FOR THE BLIND INC: $10,000 · Human ServicesCamp More: $10,000 · Human ServicesArizona Friends of Foster Children Foundation: $10,000 · Human ServicesYOUTHZONE INC: $6,500 · Human ServicesTRI COUNTY WILDLIFE CARE INC: $5,796 · Human ServicesRAINFOREST RISING: $4,000 · Human ServicesTHE FOOD DEPOT: $2,500 · Human ServicesMID-CITY CONCERNS INC: $2,000 · Human Services+3 more: $2,500 · Human Services
Other$630,657Animals$301,037Environment$144,000Arts & Culture$97,500Health$80,000Education$66,417Human Services$53,296

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

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetBLUE ROSE RANCH INC: $36,000 over 2y, 9.9% of budgetSAVE THE MANATEE CLUB INC: $31,850 over 2y, 0.4% of budgetGROWING GARDENS OF BOULDER COUNTY: $26,000 over 3y, 1.0% of budgetPUNAHOU SCHOOL: $25,917 over 2y, 0.0% of budgetPLANNED PARENTHOOD MAR MONTE INC: $22,000 over 1y, 0.0% of budgetHABITAT FOR HUMANITY IN ATLANTA INC: $20,000 over 2y, 0.0% of budgetROCKY MOUNTAIN PLANNED PARENTHOOD INC: $18,500 over 3y, 0.0% of budgetSOSA - SAFE FROM ONLINE SEX ABUSE INC: $18,500 over 2y, 2.0% of budgetATLANTA FULTON COUNTY ZOO INC: $18,000 over 3y, 0.0% of budgetZOOLOGICAL SOCIETY OF SAN DIEGO: $16,233 over 3y, 0.0% of budgetJAZZ AT ASPEN-SNOWMASS: $16,000 over 2y, 0.0% of budgetJACKSONVILLE ZOOLOGICAL SOCIETY INC: $16,000 over 3y, 0.0% of budgetDonkey Dreams Sanctuary Inc: $15,000 over 2y, 5.5% of budgetROCKY MOUNTAIN RAPTOR PROGRAM: $15,000 over 2y, 0.6% of budgetTHE CHANDLER SCHOOL: $13,000 over 3y, 0.0% of budgetASPEN SANTA FE BALLET: $12,000 over 3y, 0.1% of budgetNATIONAL WILDLIFE FEDERATION: $12,000 over 2y, 0.0% of budgetINTERNATIONAL SNOW LEOPARD TRUST: $11,833 over 3y, 0.1% of budgetPABLOVE FOUNDATION INC: $11,000 over 1y, 1.9% of budgetECOFLIGHT: $10,500 over 3y, 0.5% of budgetProject Griph: $10,000 over 1y, 8.5% of budgetNEW MEXICO SCHOOL FOR THE ARTS - ARTS INSTITUTE: $10,000 over 1y, 0.4% of budgetNATIONAL DISASTER SEARCH DOG FOUNDATION: $10,000 over 2y, 0.1% of budgetGUIDE DOGS FOR THE BLIND INC: $10,000 over 3y, 0.0% of budgetCOLORADO OPEN LANDS: $10,000 over 1y, 0.0% of budgetRED HEN PRESS INC: $10,000 over 1y, 0.8% of budgetArizona Friends of Foster Children Foundation: $10,000 over 1y, 0.2% of budget350 COLORADO: $10,000 over 1y, 0.9% of budgetDesert Tortoise Preserve Committee Inc: $10,000 over 2y, 0.4% of budgetWILDERNESS WORKSHOP: $10,000 over 3y, 0.2% of budgetFRIENDS OF BELIZE BIRD RESCUE INC: $9,500 over 2y, 1.4% of budgetLOS PADRES FORESTWATCH INC: $9,000 over 2y, 0.5% of budgetNATIONAL JEWISH HEALTH: $9,000 over 2y, 0.0% of budgetTHE BILLFISH FOUNDATION INC: $9,000 over 2y, 0.4% of budgetTHE MARINE MAMMAL CENTER: $8,500 over 3y, 0.0% of budgetINDEPENDENCE PASS FOUNDATION: $8,000 over 1y, 1.6% of budgetGREATER GALLATIN UNITED WAY INC: $7,500 over 1y, 0.3% of budgetHOLY CROSS EDUCATION FOUNDATION: $7,500 over 3y, 0.6% of budgetNATUREBRIDGE: $7,500 over 1y, 0.0% of budgetThe Childrens Lifesaving Foundation: $7,500 over 1y, 1.3% of budgetParker Learning Gardens: $7,000 over 1y, 6.7% of budgetTHE KIVA CENTER: $7,000 over 1y, 2.0% of budgetASPEN HISTORICAL SOCIETY: $7,000 over 2y, 0.2% of budgetSheJumps: $7,000 over 1y, 0.6% of budgetYOUTHZONE INC: $6,500 over 1y, 0.4% of budgetCOLORADO BALLET: $6,500 over 2y, 0.0% of budgetCANYONLANDS FIELD INSTITUTE INC: $6,000 over 2y, 0.7% of budgetHAMILTON PLAYERS INC: $6,000 over 1y, 1.9% 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.

Colorado Gives Founda…PatagoniaorgEl Pomar FoundationAspen Community Found…Maki FoundationClif Family FoundationRuth a Carver Foundat…National Fish and Wil…Aspen Business Center…Ruth Brown FoundationArches FoundationJohn & Jacolyn Bucksb…
Colorado Gives FoundationCO24.7× affinity14 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Colorado Gives Foundation · Patagoniaorg · El Pomar Foundation · Aspen Community Foundation · Maki Foundation · Clif Family Foundation · Ruth a Carver Foundation · National Fish and Wildlife Foundation · Aspen Business Center Foundation · Ruth Brown Foundation · Arches Foundation · John & Jacolyn Bucksbaum Family Found

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 Willliam H & Mattie Wattis Harris Foundation funds: left to right is the share of its income from government, bottom to top the share from Willliam H & Mattie Wattis Harris Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 50%1%4%8%15%funder's share of their income ↑0%25%50%75%100%share of the org’s income from government →median 2%
  • Ramsey Research Foundation Inc: 37% of income from government
  • International Game Fish Association Inc: 2% of income from government
  • Jacksonville Zoological Society Inc: 0% of income from government
  • Western Rivers Conservancy: 0% of income from government
no gov moneyreceives it· size = income
5get no government money at all
19report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
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 Willliam H & Mattie Wattis Harris Foundation?

Find your warmest path to Willliam H & Mattie Wattis Harris 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 181 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 Willliam H & Mattie Wattis Harris’ 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