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· Private foundation

The Prioleau Family Foundation

Its FY2024 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$80k
Granted FY2024still arriving
17
Grants FY2024still arriving
3
States reached
$22k
Largest
01What it funds
0198% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Education$198kReligion$130kEnvironment$104kArts & Culture$76kHealth$43kMembership Benefit$22kHuman Services$17kYouth Development$14kOther$0
02FY2024 · 17 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k14 grants · $28k
  • $10k–50k3 grants · $52k
$2,000
Median grant
3
States reached
$1.1M
Total assets
Largest grants
RecipientAmount
WASHINGTON & LEE UNIVERSITY$21,500
GALVESTON BAY FOUNDATION$20,000
EPISCOPAL HIGH SCHOOL$10,000
CHRIST CHURCH CATHEDRAL$7,100
PRO-VISION INC$7,000
FORUM OF CIVICS FOUNDATION$2,850
HOUSTON BARC FOUNDATION$2,500
STANFORD UNIVERSITY$2,000
THE MUSEUM OF FINE ARTS HOUSTON$2,000
MAKE A WISH FOUNDATION OF TEXAS$1,500
HOUSTON AREA PARKINSON SOCIETY$1,000
KIDS' MEALS INC$515
HOUSTON FOOD BANK$500
HOUSTON BOTANIC GARDEN$500
HABITAT FOR HUMANITY INC$300
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 (FY24–24, $515) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%KIDS' MEALS INC: $515 → 16%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

MT
IL
NY
MA
CA
CO
MO
VA
TN
SC
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.

93%of every dollar goes to organizations it has funded before.
$599k · 38 repeat orgs$42k to everyone else

Grantees it renews have grown median revenue +64% since the first grant, against +32% for those funded once.

38 repeat relationships: 13 still active in FY2024, 25 since wound down; 3 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

38
39

Total granted

$599k
$39k

Median revenue growth · since first grant

+64%
+32%

Still filing today

61%
51%

New vs renewed · share of each year

In FY2024, 96% of grant dollars renewed an existing relationship; $3k went to new ones.

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

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

’17’18’19’20’21’22’23’24
EnvironmentEducationHealthArts & CultureReligionHuman ServicesOther
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

  • Washington and Lee University
    8× · 2017–2024 · $94k · revenue +15%
  • GB
    Galveston Bay Foundation Inc
    8× · 2017–2024 · $75k · revenue +156%
  • HA
    Houston Area Parkinson Society
    8× · 2017–2024 · $29k · revenue +83%

Funded once

  • TS
    THE SALVATION ARMY USA
    one grant, 2020 · $6k
  • B
    BakerRipleygraduated
    one grant, 2017 · $5k · revenue +89%
  • GC
    GLENWOOD CEMETARY FOUNDATION
    one grant, 2019 · $5k
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
Houston Museum of Natural Science

The mission of the Houston Museum of Natural Science shall be to preserve and advance the general knowledge of natural science; to enhance in individuals the knowledge of and delight in natural science and related subjects; and to maintain…

Arts & Culture
2
The Houston Audubon Society

To advance the conservation of birds and their habitats in the Greater Houston Gulf Coast region by acquiring and maintaining critical habitat as bird sanctuaries, providing education programs and nature experiences, and advocating policy…

Environment
3
The Heritage Society

The Heritage Society (THS) is a nonprofit organization founded in 1954 whose mission is to tell the stories of the diverse history of Houston and Texas through collections, exhibits, the arts, educational programs, film, video, and other…

—
4
Houston Local Information Initiative Inc

The Houston Local Information Initiative, Inc. provides public service journalism that reflects the civic needs of the diverse communities comprising Greater Houston.

Arts & Culture
5
Harris County Medical Society

Our mission is to be the leading advocate for our member physicians, their patients and our community, in promoting the highest standards of ethical medical practice, access to quality medical care, medical education, research, and…

—
6
Houston Bar Foundation

The Houston Bar Foundation supports programs that help provide legal representation to the indigent, promote community understanding of our legal system, and foster the administration of justice.

Crime & Legal
7
Houston Parks Board

The Houston Parks Board mission is to expand, improve, and protect parks and greenspace in the Houston region.

Philanthropy
8
Breakthrough Houston

The mission of Breakthrough Houston (BTH) is to work with highly motivated students to achieve post-secondary success and empower aspiring leaders to become the next generation of educational advocates.

Education
9
John P McGovern Museum of Health & Medical Science

The Health Museum is an innovative science center that provides an interactive and entertaining experience for all ages, promotes understanding and appreciation of the human body, mind, and spirit, and inspires a lifelong commitment to…

Arts & Culture
10
The Houston Parks Board Foundation

The Houston Parks Board Foundation provides the Houston Parks Board with financial assistance to support operations and park projects.

Environment
11
Houston Freedmen's Town Conservancy Inc

To completely restore Houston Freedmen's Town as a heritage district that provides America with its only Freedmen's Town.

Community Improvement
12
Memorial Hermann Medical Group

Memorial hermann health system is a nonprofit, values-driven, community-owned health system dedicated to improving health. our vision is to create healthier communities, now and for generations to come. our values are community,…

Health
How this is measured
The grantee most central to the portfolio’s shape is The Methodist Hospital Foundation; the most unlike its peers is Planned Parenthood. 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

47 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. 47 of the 81 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)
9
Early backer (in before they grew)
47/47
Grantees still filing
34/47
Grew since first funded

Where the money sits, by cause and then by grantee

CHRIST CHURCH CATHEDRAL: $83,700 · OtherCHRIST CHURCH CATHEDRALAMAZING PLACE: $55,348 · OtherAMAZING PLACETHE CHURCH OF ST JOHN THE DIVINE: $43,500 · OtherTHE CHURCH OF ST JOHN THE DIVINEUNIVERSITY OF TEXAS: $32,100 · OtherUNIVERSITY OF TEXASEPISCOPAL HIGH SCHOOL: $30,000 · OtherEPISCOPAL HIGH SCHOOLHouston Area Parkinson Society: $29,389 · OtherHouston Area Parkinson SocietyGLENWOOD CEMETERY FOUNDATION: $22,000 · OtherGLENWOOD CEMETERY FOUNDATIONCHINQUAPIN PREPARATORY SCHOOL: $15,000 · OtherSt John's School: $14,050 · Other+46 more: $74,200 · Other+46 moreWashington and Lee University: $94,245 · EducationWashington and Lee…THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $6,500 · EducationTHE BOARD OF TRUST…+4 more: $6,000 · Education+4 moreGalveston Bay Foundation Inc: $74,750 · EnvironmentGalveston Bay Foun…River Oaks Garden Club: $20,275 · EnvironmentRiver Oaks Garden …Houston Botanic Garden: $5,500 · Environment+4 more: $5,750 · Environment+4 moreTHE BEACON OF DOWNTOWN HOUSTON: $10,870 · HealthPLANNED PARENTHOOD: $1,100 · HealthALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC: $500 · Health+1 more: $250 · HealthTHE MUSEUM OF FINE ARTS HOUSTON: $7,840 · Arts & CultureBo's Place: $1,150 · Arts & Culture+2 more: $350 · Arts & CulturePRO-VISION INC: $7,500 · Religion+2 more: $250 · ReligionBakerRipley: $5,000 · Human ServicesKIDS' MEALS INC: $515 · Human Services
Other$399,287Education$106,745Environment$106,275Health$12,720Arts & Culture$9,340Religion$7,750Human Services$5,515

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

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetWashington and Lee University: $94,245 over 8y, 0.0% of budgetGalveston Bay Foundation Inc: $74,750 over 8y, 0.2% of budgetHouston Area Parkinson Society: $29,389 over 8y, 0.5% of budgetRiver Oaks Garden Club: $20,275 over 7y, 1.9% of budgetCHINQUAPIN PREPARATORY SCHOOL: $15,000 over 3y, 0.5% of budgetSt John's School: $14,050 over 4y, 0.0% of budgetTHE BEACON OF DOWNTOWN HOUSTON: $10,870 over 4y, 0.2% of budgetForum of Civics Foundation: $10,200 over 5y, 2.7% of budgetTHE MUSEUM OF FINE ARTS HOUSTON: $7,840 over 5y, 0.0% of budgetPRO-VISION INC: $7,500 over 2y, 0.4% of budgetTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $6,500 over 7y, 0.0% of budgetHouston Botanic Garden: $5,500 over 2y, 0.1% of budgetBakerRipley: $5,000 over 1y, 0.0% of budgetCamp For All Foundation: $4,750 over 1y, 0.1% of budgetThe Junior League of Houston Inc: $4,000 over 3y, 0.0% of budgetMemorial Park Conservancy Inc: $3,500 over 2y, 0.0% of budgetSmall Steps Nurturing Center: $3,000 over 2y, 0.1% of budgetThe Houston Food Bank: $2,500 over 6y, 0.0% of budgetHouston BARC Foundation: $2,500 over 1y, 0.5% of budgetHOUSTON HUMANE SOCIETY: $1,750 over 3y, 0.0% of budgetDucks Unlimited Inc: $1,500 over 3y, 0.0% of budgetRIVER OAKS FOUNDATION: $1,320 over 3y, 2.3% of budgetTrees For Houston: $1,300 over 1y, 0.1% of budgetVanderbilt University: $1,250 over 3y, 0.0% of budgetHouston Hospice: $1,150 over 2y, 0.0% of budgetBo's Place: $1,150 over 2y, 0.0% of budgetSTAR OF HOPE MISSION: $1,000 over 2y, 0.0% of budgetSouthern Methodist University: $1,000 over 1y, 0.0% of budgetBLUE ANGELS FOUNDATION INC: $1,000 over 1y, 0.0% of budgetTHE ROSE: $1,000 over 1y, 0.0% of budgetDONORSCHOOSEORG: $750 over 1y, 0.0% of budgetKIDS' MEALS INC: $515 over 1y, 0.0% of budgetHISTORIC CHARLESTON FOUNDATION: $500 over 1y, 0.0% of budgetALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC: $500 over 1y, 0.0% of budgetVITA LIVING INC: $500 over 1y, 0.0% of budgetHermann Park Conservancy: $500 over 1y, 0.0% of budgetTEXAS WILDLIFE REHABILITATION COALITION INC: $350 over 1y, 0.1% of budgetPI BETA PHI FOUNDATION: $250 over 1y, 0.0% of budgetGarden Club of Houston: $250 over 1y, 0.0% of budgetTHE METHODIST HOSPITAL FOUNDATION: $250 over 1y, 0.0% of budgetSouthern Smoke Foundation: $250 over 1y, 0.0% of budgetCANCARE INC: $150 over 1y, 0.0% of budgetHuguenot Society of South Carolina: $100 over 1y, 0.1% of budgetCHILDREN'S MUSEUM INC: $100 over 1y, 0.0% of budgetCHILD ADVOCATES INC: $100 over 1y, 0.0% 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 Washington and Lee University ↗
  • Who funds Galveston Bay Foundation Inc ↗
  • Who funds Houston Area Parkinson Society ↗
  • Who funds River Oaks Garden Club ↗
  • Who funds CHINQUAPIN PREPARATORY SCHOOL ↗
  • Who funds St John's School ↗
  • Who funds THE BEACON OF DOWNTOWN HOUSTON ↗
  • Who funds Forum of Civics Foundation ↗
  • Who funds THE MUSEUM OF FINE ARTS HOUSTON ↗
  • Who funds PRO-VISION INC ↗
  • Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
  • Who funds Houston Botanic Garden ↗
  • Who funds BakerRipley ↗
  • Who funds Camp For All Foundation ↗
  • Who funds The Junior League of Houston Inc ↗
  • Who funds Memorial Park Conservancy Inc ↗
  • Who funds Small Steps Nurturing Center ↗
  • Who funds The Houston Food Bank ↗
  • Who funds Houston BARC Foundation ↗
  • Who funds HOUSTON HUMANE SOCIETY ↗
  • Who funds Ducks Unlimited Inc ↗
  • Who funds RIVER OAKS FOUNDATION ↗
  • Who funds Trees For Houston ↗
  • Who funds Vanderbilt University ↗
  • Who funds Houston Hospice ↗
  • Who funds Bo's Place ↗

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.

Greater Houston Community FoundationTX32.4× affinity16 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Greater Houston Community Foundation · The Brown Foundation Inc · Albert & Ethel Herzstein Charitable Foundation · Harry S & Isabel C Cameron Foundation Sentinel Trust Company · Strake Foundation · Alvin & Lucy Owsley Foundation · Vivian L Smith Foundation · Shell USA Company Foundation · LykesKnapp Family Fund · The Elkins Foundation · Boyd and Evelyn Mullen Charitable Foundation · The Vaughn Foundation CO Huntington National Bank

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

2024
’20’21’22’23’24’25
no gov · 00%0%1%3%5%funder's share of their income ↑0%25%50%75%100%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
    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 The Prioleau Family Foundation?

    Find your warmest path to The Prioleau Family 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 81 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 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

    Source object · view filing

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