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· Private foundation

R Michael Tanner Irrv Charitable Tr 032391

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.

$47k
Granted FY2025still arriving
26
Grants FY2025still arriving
9
States reached
$9k
Largest
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$206kScience & Tech$54kEducation$36kHealth$31kPublic Safety & Disaster$18kHuman Services$16kFood & Nutrition$5kReligion$2kOther$0
02FY2025 · 26 grants

Where the money goes

Grants by size, and the largest recipients.

$1,000
Median grant
9
States reached
$47k
Total assets
Largest grants
RecipientAmount
Smithsonian Institution$9,000
WETA$5,000
Planned Parenthood of Greater Wash$5,000
Wash Natl Opera National Symphony$5,000
Marlow Guitar International$3,000
Phillips Collection$2,500
American Red Cross$2,000
Stanford University Engineering$2,000
University of Illinois Foundation$1,500
Arena Stage$1,500
Univ of Cal Santa Cruz Foundation$1,000
Capital Area Food Bank$1,000
Colonial Williamsburg Foundation$1,000
Iona Senior Services$1,000
Stanford University Foundation$1,000
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 (FY18–25, $16k) land where the poverty rate runs at 14%, against an area that typically sits at 8%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 8%TRI-CITY VOLUNTEERS: $200 → 10%Iona Senior Services: $2k → 14%IONA SENIOR SERVICES: $2k → 14%IONA SENIOR SERVICES: $2k → 14%IONA SENIOR SERVICES: $2k → 14%IONA SENIOR SERVICES: $2k → 14%Iona Senior Services: $1k → 14%Iona Senior Services: $1k → 14%Iona Senior Services: $1k → 14%Dupont Circle Village: $1k → 14%Dupont Circle Village: $1k → 14%Dupont Circle Village: $1k → 14%Dupont Circle Village: $800 → 14%DUPONT CIRCLE VILLAGE: $700 → 14%DUPONT CIRCLE VILLAGE: $700 → 14%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

IL
NY
IA
NJ
CA
VA
MD
NC
DC
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.

97%of every dollar goes to organizations it has funded before.
$351k · 30 repeat orgs$10k to everyone else

Grantees it renews have grown median revenue +51% since the first grant, against -11% for those funded once.

30 repeat relationships: 22 still active in FY2025, 8 since wound down; 4 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

30
6

Total granted

$351k
$3k

Median revenue growth · since first grant

+51%
-11%

Still filing today

67%
50%

New vs renewed · share of each year

In FY2025, 87% of grant dollars renewed an existing relationship; $6k 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
Arts & CultureHuman ServicesEducationHealthScience & TechPublic BenefitOther
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

  • SMITHSONIAN INSTITUTION
    9× · 2017–2025 · $77k · revenue +31%
  • GW
    GREATER WASHINGTON EDUCATIONAL TELECOMMUNICATIONS ASSOCIATION INC
    9× · 2017–2025 · $45k · revenue +56%
  • TP
    THE PHILLIPS COLLECTION
    9× · 2017–2025 · $43k · revenue +60%

Funded once

  • IC
    IONA CENTER
    one grant, 2017 · $2k
  • UC
    UNIVERSITY CALIFORNIA SANTA CRUZ
    one grant, 2021 · $1k
  • PP
    PIPELINE PLAYWRIGHTS
    one grant, 2023 · $300
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
The Pierpont Morgan Library

The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.

Education
2
Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation

The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.

Science & Tech
3
The George Washington University

The mission of the george washington university (gw) is to educate individuals in liberal arts, languages, sciences, learned professions, and other courses and subjects of study, and to conduct scholarly research and publish the findings…

Education
4
Philadelphia Museum of Art

The philadelphia museum of art - in partnership with the city, the region, and art museums around the globe - seeks to preserve, enhance, interpret, and extend the reach of its great collection in particular, and the visual arts in…

Arts & Culture
5
San Francisco Opera Association

We believe opera is a uniquely compelling, entertaining and emotionally thrilling art form. our mission is to bring together growing audiences to experience opera's transformative power.

Arts & Culture
6
San Diego Museum of Art

To inspire, educate and cultivate curiosity through great works of art.

Arts & Culture
7
Metropolitan Museum of Art

The metropolitan museum of art collects, studies, conserves, and presents significant works of art across all times and cultures in order to connect people to creativity, knowledge, and ideas.

Arts & Culture
8
Museum of Modern Art

The Museum of Modern Art is a private, non-profit institution chartered by the State of New York Department of Education in 1929 to foster public awareness of modern and contemporary art. (Continued in Schedule O)

Arts & Culture
9
American Museum of Natural History

The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."

Arts & Culture
10
New York University

Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.

Education
11
San Francisco Museum of Modern Art

See schedule osfmoma believes the art of our time is vital and shares it with passion and purpose, and that art and the creative process can open minds and help build a better world. for that reason, we assemble unparalleled collections,…

Arts & Culture
12
United States Naval Institute

Provide an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.

—
How this is measured
The grantee most central to the portfolio’s shape is Wikimedia Foundation Inc; the most unlike its peers is Pipeline Playwrights. 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

25 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. 25 of the 41 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)
3
Early backer (in before they grew)
25/25
Grantees still filing
21/25
Grew since first funded

Where the money sits, by cause and then by grantee

SMITHSONIAN INSTITUTION: $77,000 · Arts & CultureSMITHSONIAN INSTITUTIONGREATER WASHINGTON EDUCATIONAL TELECOMMUNICATIONS ASSOCIATION INC: $45,000 · Arts & CultureGREATER WASHINGTON EDUCATIONAL TELECOMMUNICATIONS ASSOCIATION IN…THE PHILLIPS COLLECTION: $42,500 · Arts & CultureTHE PHILLIPS COLLECTIONWASHINGTON DRAMA SOCIETY INC: $13,500 · Arts & CultureWASHINGTON DRAMA SOCIETY INCNational Gallery of Art: $9,000 · Arts & CultureColonial Williamsburg Foundation: $9,000 · Arts & Culture+5 more: $16,000 · Arts & Culture+5 moreJOHN F KENNEDY CENTER: $29,900 · OtherJOHN F KENNEDY CENTERPlanned Parenthood of Greater Wash: $6,500 · OtherPlanned Parenthood of …Univ of Cal Santa Cruz Foundation: $5,000 · OtherUniv of Cal Santa Cruz…Wash Natl Opera National Symphony: $5,000 · OtherWash Natl Opera Nation…Stanford University Engineering: $5,000 · OtherStanford University En…Stanford University Foundation: $4,000 · OtherStanford University Fo…IEEE Foundation: $3,350 · OtherUNIVERSITY OF ILLINOIS CHICAGO FOUNDATION: $3,000 · OtherIEEE FOUNDATION FUND: $2,600 · OtherUIC COLLEGE OF MEDICINE: $2,600 · Other+9 more: $7,100 · Other+9 moreAmerican National Red Cross & Its Constituent Chapters and Branches: $18,000 · Human ServicesAmerican N…Iona Senior Services: $10,500 · Human ServicesIona Senio…DUPONT CIRCLE VILLAGE: $5,200 · Human ServicesDUPONT CIR…+1 more: $200 · Human ServicesTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $9,500 · EducationUniversity of Illinois Foundation: $6,000 · EducationTHE YORK SCHOOL: $5,500 · EducationWIKIMEDIA FOUNDATION INC: $2,400 · EducationPLANNED PARENTHOOD OF METROPOLITAN WASHINGTON DC INC: $20,500 · HealthCAPITAL AREA FOOD BANK INC: $5,000 · Food & NutritionCONSUMER REPORTS INC: $1,350 · Public Benefit
Arts & Culture$212,000Other$74,050Human Services$33,900Education$23,400Health$20,500Food & Nutrition$5,000Public Benefit$1,350

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 budgetSMITHSONIAN INSTITUTION: $77,000 over 9y, 0.0% of budgetGREATER WASHINGTON EDUCATIONAL TELECOMMUNICATIONS ASSOCIATION INC: $45,000 over 9y, 0.0% of budgetTHE PHILLIPS COLLECTION: $42,500 over 9y, 0.1% of budgetPLANNED PARENTHOOD OF METROPOLITAN WASHINGTON DC INC: $20,500 over 2y, 0.1% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches: $18,000 over 9y, 0.0% of budgetWASHINGTON DRAMA SOCIETY INC: $13,500 over 9y, 0.0% of budgetIona Senior Services: $10,500 over 8y, 0.0% of budgetTHE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY: $9,500 over 5y, 0.0% of budgetNational Gallery of Art: $9,000 over 2y, 0.0% of budgetColonial Williamsburg Foundation: $9,000 over 9y, 0.0% of budgetENCORE CREATIVITY CORPORATION: $6,500 over 4y, 0.3% of budgetUniversity of Illinois Foundation: $6,000 over 4y, 0.0% of budgetTHE YORK SCHOOL: $5,500 over 9y, 0.0% of budgetMARLOW GUITAR INTERNATIONAL INCORPORATED: $5,450 over 6y, 1.3% of budgetDUPONT CIRCLE VILLAGE: $5,200 over 6y, 0.3% of budgetCAPITAL AREA FOOD BANK INC: $5,000 over 5y, 0.0% of budgetOpera Lafayette: $3,500 over 7y, 0.1% of budgetWIKIMEDIA FOUNDATION INC: $2,400 over 9y, 0.0% of budgetNATIONAL PARK FOUNDATION: $1,500 over 5y, 0.0% of budgetCONSUMER REPORTS INC: $1,350 over 6y, 0.0% of budgetNATIONAL ACADEMY OF INVENTORS INC: $900 over 3y, 0.0% of budgetLEVINE MUSIC INC: $250 over 1y, 0.0% of budgetTRI-CITY VOLUNTEERS INC: $200 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 SMITHSONIAN INSTITUTION ↗
  • Who funds GREATER WASHINGTON EDUCATIONAL TELECOMMUNICATIONS ASSOCIATION INC ↗
  • Who funds THE PHILLIPS COLLECTION ↗
  • Who funds PLANNED PARENTHOOD OF METROPOLITAN WASHINGTON DC INC ↗
  • Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
  • Who funds WASHINGTON DRAMA SOCIETY INC ↗
  • Who funds Iona Senior Services ↗
  • Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
  • Who funds National Gallery of Art ↗
  • Who funds Colonial Williamsburg Foundation ↗
  • Who funds ENCORE CREATIVITY CORPORATION ↗
  • Who funds University of Illinois Foundation ↗
  • Who funds THE YORK SCHOOL ↗
  • Who funds MARLOW GUITAR INTERNATIONAL INCORPORATED ↗
  • Who funds DUPONT CIRCLE VILLAGE ↗
  • Who funds CAPITAL AREA FOOD BANK INC ↗
  • Who funds Opera Lafayette ↗
  • Who funds WIKIMEDIA FOUNDATION INC ↗
  • Who funds NATIONAL PARK FOUNDATION ↗
  • Who funds CONSUMER REPORTS INC ↗
  • Who funds NATIONAL ACADEMY OF INVENTORS INC ↗
  • Who funds POPULATION CONNECTION ↗
  • Who funds PIPELINE PLAYWRIGHTS ↗
  • Who funds LEVINE MUSIC INC ↗
  • Who funds TRI-CITY VOLUNTEERS 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.

Greater Washington Community FoundationDC12.9× affinity4 shared granteesties to 6 of 6Hover any node to trace its alignments.Compare side by side →

Open a dossier: Greater Washington Community Foundation · Vanguard Charitable Endowment Program · National Philanthropic Trust · American Online Giving Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile 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 R Michael Tanner Irrv Charitable Tr 032391 funds: left to right is the share of its income from government, bottom to top the share from R Michael Tanner Irrv Charitable Tr 032391. 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%5%10%15%20%share of the org’s income from government →median 0%
  • National Academy of Inventors Inc: 0% of income from government
no gov moneyreceives it· size = income
0get no government money at all
10report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–20%
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.

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 41 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

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