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Plinth

· Private foundation

Marcum Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$84k
Granted FY2025still arriving
20
Grants FY2025still arriving
3
States reached
$30k
Largest
01What you fund
0189% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20202025.

Education$163kRecreation & Sports$50kHuman Services$27kArts & Culture$16kHealth$6kReligion$5kAnimals$5kPublic Safety & Disaster$563Other$0
02FY2025 · 20 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k17 grants · $17k
  • $10k–50k3 grants · $68k
$600
Median grant
3
States reached
$1.1M
Total assets
Largest grants
RecipientAmount
VIRGINIA TECH FOUNDATION$30,000
VT ATHLETIC FUND$25,000
RADFORD UNIVERSITY FOUNDATION$12,550
Individual grant recipient$5,850
EAGLES NEST REGENERATION$4,000
VT FELLOWSHIP OF CHRISTIAN ATHLETES$1,200
DUKE CANCER INSTITUTE$1,000
MOUNTAIN EMPIRE CC FOUNDATION$1,000
RADFORD UNIVERSITY FELLOWSHIP OF CH$900
WVU FOUNDATION$600
Individual grant recipient$500
MONTGOMERY COUNTY CHRISTMAS STORE$500
BLACKSBURG SPORTS CLUB$275
RIVERVIEW CEMETERY FUND$250
P BUCKLEY MOSS SOCIETY$225
02The need
03

Do your dollars go where the need is?

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

show:

Your human-services grants (FY20–25, $27k) land where the poverty rate runs at 12%, against an area that typically sits at 11%. 98% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 11%YMCA OF THE TRIANGLE: $500 → 8%EAGLES NEST REGENERATION: $6k → 12%EAGLES NEST REGENERATION: $6k → 12%EAGLES NEST REGENERATION: $4k → 12%Eagles Nest Regeneration: $4k → 12%EAGLES NEST REGENERATION: $3k → 12%Eagles Nest Regeneration: $3k → 12%MONTGOMERY COUNTY CHRISTMAS STORE: $500 → 21%MONTGOMERY COUNTY CHRISTMAS STORE: $100 → 21%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

IA
CA
WV
VA
TN
NC
SC
GA

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

97%of every dollar goes to organizations you’ve funded before.
$192k · 22 repeat orgs$6k to everyone else

22 repeat relationships — 14 still active in FY2025, 8 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

22
20

Total granted

$192k
$4k

Median revenue growth · since first grant

+38%
+89%

Still filing today

45%
15%

New vs renewed · share of each year

In FY2025, 97% of grant dollars renewed an existing relationship; $2k went to new ones.

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

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

’20’21’22’23’24’25
EducationHuman ServicesHealthArts & CultureAnimalsRecreation & SportsOther

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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

  • EN
    EAGLES NEST REGENERATION
    6× · 2020–2025 · $26k · revenue +240%
  • BM
    Blacksburg Museum And Cultural Foundation Inc
    3× · 2020–2022 · $15k · revenue +38%
  • MC
    MONROE COUNTY FRIENDS OF ANIMALS
    5× · 2020–2024 · $4k · revenue +369%

Funded once

  • UW
    UVA Wise Foundation
    one grant, 2021 · $1k
  • LL
    LAASERS LADYBUG SOCIETY
    one grant, 2022 · $500
  • TY
    The Young Men's Christian Association of the Triangle Area Inc (4598)graduated
    one grant, 2020 · $500 · revenue +89%

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

04Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.

1
Virginia Commonwealth University Foundat

To support the educational, scientific and charitable activities of virginia commonwealth university and related organizations.

Education
2
Medical College of Va Foundation

To support and foster vcu health and vcu health sciences through philanthropy, stewardship, innovation, communication, and collaboration.

Education
3
Vcu Investment Management Company

To provide investment and investment management and related services to the rector and the board of visitors of virginia commonwealth university (vcu), and/or to the private and independent foundations and other entities affiliated with…

Education
4
William & Mary Foundation

The William & Mary Foundation advances the university's highest aspirations by securing private support, guiding a multi-asset investment portfolio, and offering strategic leadership. In this work, we propel the university toward national…

Education
5
Virginia Commonwealth University Intellectual Property Foundation

The foundation determines the patentability and obtains patents on virginia commonwealth university (vcu) inventions and markets and licenses such inventions to commerical entities. the foundation's activities promote research efforts at…

Health
6
Virginia Tech Applied Research Corporation

The mission of vt-arc is to extend the impact of the virginia tech research and innovation enterprise, delivering superior analytic and technology solutions to government and non-government customers.

Science & Tech
7
Virginia Commonwealth University School of Business Foundation

The mission of the foundation is to assist, support and foster the activities and mission of the school of business at virginia commonwealth university. it solicits, manages and distributes assets to benefit programs in the school of…

Education
8
Virginia Student Aid Foundation Inc

The virginia athletics foundation, through its fund-raising efforts, strives to support a preeminent intercollegiate athletics program at the university of virginia by providing student-athletes theopportunity to achieve academic and…

Education
9
University of Virginia Investment Management Company

The university of virginia investment management company (uvimco) is organized to invest funds on behalf of the rector and visitors of the university of virginia (the university or uva) and university-associated organizations (uaos).

Education
10
Vicksburg Foundation
11
University of Virginia Engineering Foundation Inc

The foundation supports the mission of the university of virginia school of engineering and applied science by leading efforts to build and sustain beneficial relationships and by raising, investing, managing and providing external private…

12
The University of Virginia Medical School Foundation

The university of virginia medical alumni association and medical school foundation is dedicated to enhancing the experience of students, housestaff, alumni and faculty of the uva school of medicine by creating opportunities for mentoring,…

Education

For reference, the grantee most central to the portfolio’s shape is West Virginia University Foundation Inc and the most unlike its peers is Gbm Foundation 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

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

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 16 of the 49 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.

0
Load-bearing (≥25% of a budget)
4
Early backer (in before they grew)
15/16
Grantees still filing
12/16
Grew since you first funded

Where your money sits — by cause, then by grantee

VIRGINIA TECH FOUNDATION INC — $85,950 · EducationVIRGINIA TECH FOUNDATION INCRADFORD UNIVERSITY FOUNDATION INC — $71,750 · EducationRADFORD UNIVERSITY FOUNDATION INC+2 more — $3,750 · EducationVT ATHLETIC FUND — $38,000 · OtherVT ATHLETIC FUNDIndividual grant recipient — $7,950 · OtherIndividual grant recipientDuke Cancer Institute — $5,000 · OtherDuke Cancer InstituteVT FELLOWSHIP OF CHRISTIAN ATHLETES — $4,800 · OtherVT FELLOWSHIP OF CHRISTIAN AT…RADFORD UNIVERSITY FELLOWSHIP OF CH — $4,222 · OtherRADFORD UNIVERSITY FELLOWSHIP…+32 more — $13,168 · Other+32 moreEAGLES NEST REGENERATION — $25,500 · Human ServicesEAGLES NES…+2 more — $1,200 · Human ServicesBlacksburg Museum And Cultural Foundation Inc — $15,000 · Arts & CultureMONROE COUNTY FRIENDS OF ANIMALS — $4,350 · AnimalsBLACKSBURG SPORTS CLUB — $2,925 · Recreation & SportsPROSTATE CANCER FOUNDATION — $600 · PhilanthropyCommunity Foundation of the Lowcountry — $200 · Philanthropy
Education$161,450Other$73,140Human Services$26,700Arts & Culture$15,000Animals$4,350Recreation & Sports$2,925Philanthropy$800

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetVIRGINIA TECH FOUNDATION INC — $85,950 over 6y, 0.0% of budgetRADFORD UNIVERSITY FOUNDATION INC — $71,750 over 6y, 0.7% of budgetEAGLES NEST REGENERATION — $25,500 over 6y, 0.1% of budgetBlacksburg Museum And Cultural Foundation Inc — $15,000 over 3y, 2.4% of budgetMONROE COUNTY FRIENDS OF ANIMALS — $4,350 over 5y, 0.1% of budgetWEST VIRGINIA UNIVERSITY FOUNDATION INC — $3,500 over 6y, 0.0% of budgetBLACKSBURG SPORTS CLUB — $2,925 over 6y, 1.4% of budgetMONTGOMERY COUNTY CHRISTMAS STORE — $700 over 3y, 0.0% of budgetPROSTATE CANCER FOUNDATION — $600 over 3y, 0.0% of budgetBLACKSBURG VOLUNTEER RESCUE SQUAD — $563 over 4y, 0.1% of budgetLAASERS LADYBUG SOCIETY — $500 over 1y, 0.6% of budgetThe Young Men's Christian Association of the Triangle Area Inc (4598) — $500 over 1y, 0.0% of budgetHEARTS HELPING EACH ADOLESCENT REACH THEIR SPARK — $300 over 1y, 0.2% of budgetP BUCKLEY MOSS FOUNDATION — $250 over 2y, 0.5% of budgetCommunity Foundation of the Lowcountry — $200 over 1y, 0.0% of budget
Go grantee by grantee — a decade per org, and how each moved after you funded them

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

  • Who funds VIRGINIA TECH FOUNDATION INC
  • Who funds RADFORD UNIVERSITY FOUNDATION INC
  • Who funds EAGLES NEST REGENERATION
  • Who funds Blacksburg Museum And Cultural Foundation Inc
  • Who funds MONROE COUNTY FRIENDS OF ANIMALS
  • Who funds WEST VIRGINIA UNIVERSITY FOUNDATION INC
  • Who funds BLACKSBURG SPORTS CLUB
  • Who funds MONTGOMERY COUNTY CHRISTMAS STORE
  • Who funds PROSTATE CANCER FOUNDATION
  • Who funds BLACKSBURG VOLUNTEER RESCUE SQUAD
  • Who funds LAASERS LADYBUG SOCIETY
  • Who funds The Young Men's Christian Association of the Triangle Area Inc (4598)
  • Who funds HEARTS HELPING EACH ADOLESCENT REACH THEIR SPARK
  • Who funds P BUCKLEY MOSS FOUNDATION
  • Who funds Community Foundation of the Lowcountry

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.

Fidelity Investments Charitable Gift FundMA3.3× affinity6 shared granteesties to 1 of 1Hover any node to trace its alignments.Compare side by side →

Open a dossier: Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

Government reliance of your grantees

Every dot is one organization Marcum Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.

2024
202122232425
no gov · 00%0%1%3%5%your share of their income ↑0%1%3%4%5%share of the org’s income from government
    no gov moneyreceives it· size = income
    0get no government money at all
    4report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–5%
    typical government reliance, FY2025

    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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.

    On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 49 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your 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. How we build these →

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

    Source object · view filing

    More from the funding graph