Skip to content
Gustavus and Louise Pfeiffer Research Foundation at a glance

· Private foundation

Gustavus and Louise Pfeiffer Research 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.

$651k
Granted FY2024still arriving
3
Grants FY2024still arriving
2
States reached
$500k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
01What it funds
01100% classified

What it funded, over time

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

Education$5.0MHealth$4.6MArts & Culture$1k
02FY2024 · 3 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2024

  • Under $10k1 grant · $1k
  • $50k–250k1 grant · $150k
  • $250k+1 grant · $500k
$150,000
Median grant
2
States reached
$20M
Total assets
Largest grants
RecipientAmount
HUNTINGTON MEDICAL RESEARCH INSTITUTES$500,000
PFEIFFER UNIVERSITY$150,000
OLD MILL 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:

Dollar for dollar, its grants (FY20–24) land where the poverty rate runs at 12%, against an area that typically sits at 12%. 66% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 12%STANFORD UNIVERSITY - FINANCIAL AID OFFICE: $1.0M → 8%OLD MILL FOUNDATION: $1k → 14%WASHINGTON UNIVERSITY: $250k → 11%UNIVERSITY OF CONNECTICUT FOUNDATION INCORPORATED: $250k → 11%PFEIFFER UNIVERSITY: $150k → 13%NEW JERSEY INSTITUTE OF TECHNOLOGY FOUNDATION: $1.0M → 16%NATIONAL FEDERATION OF THE BLIND INC: $250k → 19%BOWDOIN COLLEGE: $400k → 7%UNIVERSITY OF MAINE FOUNDATION: $250k → 15%STANFORD UNIVERSITY - FINANCIAL AID OFFICE: $250k → 8%HUNTINGTON MEDICAL RESEARCH INSTITUTES: $1.6M → 14%WASHINGTON UNIVERSITY: $50k → 11%UNIVERSITY OF CONNECTICUT FOUNDATION INCORPORATED: $50k → 11%PFEIFFER UNIVERSITY: $150k → 13%NEW JERSEY INSTITUTE OF TECHNOLOGY FOUNDATION: $250k → 16%BOWDOIN COLLEGE: $100k → 7%UNIVERSITY OF MAINE FOUNDATION: $50k → 15%STANFORD UNIVERSITY - FINANCIAL AID OFFICE: $150k → 8%HUNTINGTON MEDICAL RESEARCH INSTITUTES: $800k → 14%PFEIFFER UNIVERSITY: $150k → 13%NEW JERSEY INSTITUTE OF TECHNOLOGY FOUNDATION: $50k → 16%STANFORD UNIVERSITY - FINANCIAL AID OFFICE: $150k → 8%HUNTINGTON MEDICAL RESEARCH INSTITUTES: $500k → 14%PFEIFFER UNIVERSITY: $150k → 13%LITTLE KIDS ROCK INC: $250 → 16%STANFORD UNIVERSITY - FINANCIAL AID OFFICE: $150k → 8%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.
04

Where the work is directed

The same grants placed two ways: where each recipient sits, and where its stated purpose sends the money.

About 8% of Gustavus and Louise Pfeiffer Research Foundation’s grant dollars are earmarked for a different county than the recipient’s own address.

Gustavus and Louise Pfeiffer Research Foundationlessmore of its giving
Placed by recipient address · 7.3% directed abroad (not shown)
How this is measured
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the funder’s own 990 grant descriptions.
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.
$9.0M · 8 repeat orgs$251k to everyone else

8 repeat relationships: 2 still active in FY2024, 6 since wound down; 1 grantees were first funded in FY2024 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

8
2

Total granted

$9.0M
$250k

Median revenue growth · since first grant

+21%
+32%

Still filing today

75%
100%

New vs renewed · share of each year

In FY2024, 100% of grant dollars renewed an existing relationship; $1k went to new ones.

50%100%’20’21’22’24
RenewedFirst-time

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

’20’21’22’24
EducationHealthArts & CultureOther
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

  • FA
    FOUNDATION AT NJ INSTITUTE OF TECHNOLOGY
    2× · 2021–2022 · $1.3M · revenue +74%
  • BC
    Bowdoin College
    2× · 2021–2022 · $500k · revenue +25%
  • WASHINGTON UNIVERSITY
    2× · 2021–2022 · $300k · revenue +21%

Funded once

  • TN
    THE NATIONAL FEDERATION OF THE BLIND
    one grant, 2021 · $250k · revenue +16%
  • MW
    MUSIC WILL INCgraduated
    one grant, 2022 · $250 · revenue +32%
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 Trustees of Princeton University

Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…

Education
2
University of New Haven

The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…

Education
3
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
4
Trustees of the University of Pennsylvania

The trustees of the university of pennsylvania (the "university") sees itself as having a public service mission. in such regard, the university aims to provide a rich and diverse educational environment for its students; to pioneer…

Education
5
Worcester Polytechnic Institute

Wpi transforms lives, turns knowledge into action to confront global challenges, and revolutionizes stem through distinctive and inclusive education, projects and research. (http://www.wpi.edu/about/mission.html)

—
6
President and Fellows of Harvard College

Undergraduate, graduate, and professional education and research across a broad array of academic domains.

Education
7
The Rockefeller University

The rockefeller university (the university) is a world renowned center for research and graduate education in the biomedical sciences, chemistry, bioinformatics, and physics. the university's 73 laboratories conduct both clinical and basic…

Education
8
Yale University

To improve the world through research, scholarship, education, preservation, and practice.

Education
9
Cornell University

Education, research, medical services and other public services.

Education
10
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
11
Trustees of Dartmouth College

Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.

Education
12
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
How this is measured
The grantee most central to the portfolio’s shape is Foundation At Nj Institute of Technology; the most unlike its peers is Old Mill Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
05the grantee network

10 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. 10 of the 12 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)
0
Early backer (in before they grew)
10/10
Grantees still filing
6/10
Grew since first funded

Where the money sits, by cause and then by grantee

FOUNDATION AT NJ INSTITUTE OF TECHNOLOGY: $1,300,000 · EducationFOUNDATION AT NJ INSTITUTE OF TECHNOLOG…PFEIFFER UNIVERSITY: $600,000 · EducationPFEIFFER UNIVERSITYBowdoin College: $500,000 · EducationBowdoin CollegeWASHINGTON UNIVERSITY: $300,000 · EducationWASHINGTON UNIVERSITYTHE UNIVERSITY OF CONNECTICUT FOUNDATION INC: $300,000 · EducationTHE UNIVERSITY OF CONNECTICUT FOUNDATIO…University of Maine Foundation: $300,000 · EducationUniversity of Maine FoundationHUNTINGTON MEDICAL RESEARCH INSTITUTES: $2,900,000 · HealthHUNTINGTON MEDICAL RESEARCH INSTITUTE…THE NATIONAL FEDERATION OF THE BLIND: $250,000 · HealthTHE NATIONAL FEDERATION OF THE BLINDSTANFORD UNIVERSITY - FINANCIAL AID OFFICE: $1,700,000 · OtherSTANFORD UNIVERSITY - FINANCIAL AID …YALE UNIVERSITY: $1,400,000 · OtherYALE UNIVERSITYOLD MILL FOUNDATION: $1,000 · Arts & CultureMUSIC WILL INC: $250 · Arts & Culture
Education$3,300,000Health$3,150,000Other$3,100,000Arts & Culture$1,250

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 budgetHUNTINGTON MEDICAL RESEARCH INSTITUTES: $2,900,000 over 2y, 19% of budgetFOUNDATION AT NJ INSTITUTE OF TECHNOLOGY: $1,300,000 over 2y, 5.8% of budgetPFEIFFER UNIVERSITY: $600,000 over 4y, 0.4% of budgetBowdoin College: $500,000 over 2y, 0.1% of budgetWASHINGTON UNIVERSITY: $300,000 over 2y, 0.0% of budgetTHE UNIVERSITY OF CONNECTICUT FOUNDATION INC: $300,000 over 2y, 0.2% of budgetUniversity of Maine Foundation: $300,000 over 2y, 1.1% of budgetTHE NATIONAL FEDERATION OF THE BLIND: $250,000 over 1y, 1.2% of budgetOLD MILL FOUNDATION: $1,000 over 1y, 0.3% of budgetMUSIC WILL INC: $250 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.

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 set of overlaps that mostly run through this funder rather than between each other.

Fidelity Investments …
Fidelity Investments Charitable Gift FundMA6× affinity4 shared granteesties to 0 of 0Hover any node to trace its alignments.Compare side by side →

Open a dossier: Fidelity Investments Charitable Gift Fund

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 Gustavus and Louise Pfeiffer Research Foundation funds: left to right is the share of its income from government, bottom to top the share from Gustavus and Louise Pfeiffer Research Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 10%1%5%11%20%funder's share of their income ↑0%10%20%30%40%share of the org’s income from government →median 2%
  • The National Federation of the Blind: 2% of income from government
no gov moneyreceives it· size = income
1get no government money at all
2report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–40%
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 12 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

Play a game based on Gustavus and Louise Pfeiffer Research’s 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