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Mary B & James K Jennings Charitable Foundation at a glance

· Private foundation

Mary B & James K Jennings Charitable 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.

$12k
Granted FY2025still arriving
7
Grants FY2025still arriving
1
States reached
$5k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
01100% classified

What it funded, over time

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

Arts & Culture$45kEducation$22kHealth$22kReligion$19kEnvironment$15kRecreation & Sports$2kHuman Services$750Science & Tech$500Other$0
02FY2025 · 7 grants

Where the money goes

Grants by size, and the largest recipients.

$900
Median grant
1
States reached
$290k
Total assets
Largest grants
RecipientAmount
Houston Methodist Hospital Foundation$5,000
Trinity Episcopal School$3,000
Texas Children's Hospital$1,000
ReMind$900
Camp Allen$850
Post Oak Little League$500
Neil-Cochran House Museum$500
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 (FY17–22, $3k) land where the poverty rate runs at 16%, against an area that typically sits at 13%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 13%Houstons Amazing Place Inc: $1k → 16%Houstons Amazing Place Inc: $1k → 16%Houstons Amazing Place Inc: $100 → 16%Houstons Amazing Place Inc: $100 → 16%Childrens Grand Adventure: $200 → 16%DePelchin Children's Center: $500 → 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.
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.

90%of every dollar goes to organizations it has funded before.
$114k · 18 repeat orgs$13k to everyone else

Grantees it renews have grown median revenue +41% since the first grant, against +30% for those funded once.

18 repeat relationships: 5 still active in FY2025, 13 since wound down; 2 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

18
22

Total granted

$114k
$12k

Median revenue growth · since first grant

+41%
+30%

Still filing today

72%
45%

New vs renewed · share of each year

In FY2025, 91% of grant dollars renewed an existing relationship; $1k 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
EducationArts & CultureHealthHuman ServicesPhilanthropyReligionOther
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

  • TM
    THE MUSEUM OF FINE ARTS HOUSTON
    3× · 2020–2022 · $15k · revenue +51%
  • BB
    Bayou Bend Gardens Endowment
    3× · 2017–2019 · $15k · revenue +88%
  • WM
    William Marsh Rice University
    3× · 2018–2022 · $5k · revenue +63%

Funded once

  • RO
    River Oaks Baptist School
    one grant, 2023 · $3k
  • TC
    THE CHURCH OF ST JOHN THE DIVINE
    one grant, 2017 · $2k
  • RU
    Rice Univ Shepherd School of Music
    one grant, 2017 · $1k
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 Botanic Garden

To enrich life through discovery, education, and the conservation of plants and the natural environment.

Environment
2
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
3
Trees for Houston

Plant, protect and promote trees all over the greater Houston area.

—
4
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
5
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…

—
6
St John's School

See Schedule OSt. John's School is an independent, co-educational day school presenting a 13-year sequence of college preparatory training. A non-profit institution, it was founded in 1946 to provide the community with a school of exacting…

—
7
Houston Academy of Medicine

The mission of the Houston Academy of Medicine is to support the community service, education, scientific, and charitable programs for physicians, their patients, and the community at large in Harris County.

Education
8
Houston Independent School District Foundation

The HISD Foundation is dedicated to mobilizing the local community to support innovative priorities in HISD to improve outcomes for all students in the district. Our mission is to fund projects and programs of merit that fall outside of…

—
9
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…

—
10
Presbyterian School

Family, School, and Church united in the education and support of each child - this is the founding premise upon which Presbyterian School nurtures and challenges its students. The school provides an educational program of the highest…

Education
11
The Awty International School

See Schedule OThe purpose of Awty International School (Awty) is to create an environment where students experience excellence every day to make their mark on the world alongside their community, in a spirit of curiosity, courage and…

—
12
The University of TexasTexas a&M Investment Management Company

To generate superior long-term investment returns to support The University of Texas and Texas A&M University systems as they provide world-class teaching, push the boundaries of discovery, and achieve excellence in patient healthcare for…

Education
How this is measured
The grantee most central to the portfolio’s shape is The Methodist Hospital Foundation; the most unlike its peers is William Marsh Rice University. 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

24 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. 24 of the 42 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)
4
Early backer (in before they grew)
24/24
Grantees still filing
19/24
Grew since first funded

Where the money sits, by cause and then by grantee

Saint Martin's Episcopal Church: $16,500 · OtherSaint Martin's Episcopal ChurchTrinity Episcopal School: $6,000 · OtherTrinity Episcopal SchoolEPISCOPAL HIGH SCHOOL: $3,000 · OtherEPISCOPAL HIGH SCHOOLNatl Soc of Colonial Dames of America: $3,000 · OtherNatl Soc of Colonial Dames of AmericaRiver Oaks Baptist School: $3,000 · OtherRiver Oaks Baptist SchoolREMIND: $2,700 · OtherREMINDTHE CHURCH OF ST JOHN THE DIVINE: $2,050 · OtherCamp Allen Camp & Conference Center: $1,950 · Other+15 more: $5,185 · Other+15 moreHouston Grand Opera Association Inc: $24,090 · Arts & CultureHouston Grand Opera Association IncTHE MUSEUM OF FINE ARTS HOUSTON: $15,000 · Arts & CultureTHE MUSEUM OF FINE ARTS HOUSTON+2 more: $1,000 · Arts & CultureTHE METHODIST HOSPITAL FOUNDATION: $12,000 · HealthTHE METHODIST…Texas Children's Hospital: $3,000 · HealthTexas Childre…+1 more: $250 · HealthBayou Bend Gardens Endowment: $14,650 · EnvironmentBayou Bend Ga…William Marsh Rice University: $4,650 · EducationThe Kinkaid School Inc: $3,000 · EducationRiver Oaks Elementary School PTO: $1,000 · Education+2 more: $550 · EducationHouston's Amazing Place Inc: $2,490 · Human ServicesDEPELCHIN CHILDREN'S CENTER: $500 · Human ServicesTHE CHILDREN'S GRAND ADVENTURE DBA THE GRAND ADNEVTURE: $200 · Human ServicesHope and Healing Center & Institute: $600 · ReligionHouston Pi Beta Phi Foundation: $250 · PhilanthropyBARBARA BUSH HOUSTON LITERACY FOUNDATION: $175 · Philanthropy
Other$43,385Arts & Culture$40,090Health$15,250Environment$14,650Education$9,200Human Services$3,190Religion$600Philanthropy$425

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 budgetHouston Grand Opera Association Inc: $24,090 over 5y, 0.0% of budgetTHE MUSEUM OF FINE ARTS HOUSTON: $15,000 over 3y, 0.0% of budgetTHE METHODIST HOSPITAL FOUNDATION: $12,000 over 8y, 0.0% of budgetWilliam Marsh Rice University: $4,650 over 3y, 0.0% of budgetTexas Children's Hospital: $3,000 over 2y, 0.0% of budgetThe Kinkaid School Inc: $3,000 over 6y, 0.0% of budgetREMIND: $2,700 over 4y, 0.1% of budgetHouston's Amazing Place Inc: $2,490 over 4y, 0.0% of budgetCamp Allen Camp & Conference Center: $1,950 over 4y, 0.0% of budgetRiver Oaks Elementary School PTO: $1,000 over 1y, 0.4% of budgetHope and Healing Center & Institute: $600 over 3y, 0.0% of budgetHouston Museum of Natural Science: $500 over 1y, 0.0% of budgetDEPELCHIN CHILDREN'S CENTER: $500 over 1y, 0.0% of budgetTHE NATIONAL SOCIETY OF THE COLONIAL DAMES OF AMERICA: $500 over 2y, 0.0% of budgetLittle League Baseball Inc 3431607 Post Oak LL: $500 over 1y, 0.0% of budgetThe Houston Food Bank: $500 over 1y, 0.0% of budgetWashington and Lee University: $300 over 2y, 0.0% of budgetHouston Pi Beta Phi Foundation: $250 over 1y, 0.2% of budgetUniversity of Houston Foundation: $250 over 1y, 0.0% of budgetLSU HEALTH FOUNDATION NEW ORLEANS: $250 over 1y, 0.0% of budgetTHE CHILDREN'S GRAND ADVENTURE DBA THE GRAND ADNEVTURE: $200 over 1y, 0.1% of budgetBARBARA BUSH HOUSTON LITERACY FOUNDATION: $175 over 1y, 0.0% of budgetST MARTINS ENDOWMENT FUND: $50 over 1y, 0.1% 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.

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 Commu…The William Stamps Fa…Albert & Ethel Herzst…The Brown Foundation …Shell USA Company Fou…MD Anderson FoundationThe Methodist HospitalMarek Family Foundati…The Powell FoundationStrake FoundationNatl Christian Charit…National Philanthropi…
Greater Houston Community FoundationTX25.2× affinity11 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Greater Houston Community Foundation · The William Stamps Farish Fund · Albert & Ethel Herzstein Charitable Foundation · The Brown Foundation Inc · Shell USA Company Foundation · MD Anderson Foundation · The Methodist Hospital · Marek Family Foundation · The Powell Foundation · Strake Foundation · Natl Christian Charitable Fdn Inc · National Philanthropic Trust

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 Mary B & James K Jennings Charitable Foundation funds: left to right is the share of its income from government, bottom to top the share from Mary B & James K Jennings Charitable 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%6%13%19%25%share of the org’s income from government →
    no gov moneyreceives it· size = income
    0get no government money at all
    3report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–25%
    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 Mary B & James K Jennings Charitable Foundation?

    Find your warmest path to Mary B & James K Jennings Charitable 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 42 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 Mary B & James K Jennings’ 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