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Foundation Dossiers

Delaware · 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 FY2024(still arriving)
3
Grants FY2024
8
Organizations funded FY2022
13%
First-time grantees FY2022
Read the full brief
Median grant, FY2024
$150,000
Largest grant, FY2024
$500,000
Organizations funded a year
3 to 8
FY2020 to FY2022
States reached, FY2024
2
Total assets, FY2024
$20M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2022, 13% of the organizations Gustavus and Louise Pfeiffer Research Foundation funded were first-time grantees, receiving 0% of its grant dollars.

New vs renewed · share of each year

In FY2022, 100% of grant dollars renewed an existing relationship; $250 went to new ones.

50%100%’21’22
RenewedFirst-time

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

’21’22
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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2024still arriving3$651k33%
FY20228$700k13%
FY20218$5.2M75%
FY20203$2.7Mn/a
100% 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

Top grantees

Largest recipients by total granted, FY2020 to FY2024, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Huntington Medical Research Institutes$2,900,000219%
Yale University$1,400,0002n/a
Foundation at Nj Institute of Technology$1,300,00026%
Pfeiffer University$600,00040%
Bowdoin College$500,00020%
Washington University$300,00020%
The University of Connecticut Foundation Inc$300,00020%
The National Federation of the Blind$250,00011%
Old Mill Foundation$1,00010%
Music Will Inc$25010%

Plus 1 recipient with no EIN on record ($1.7M), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Gustavus and Louise Pfeiffer Research Foundation supplied at peak.

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 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

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 9.

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.

Compare Gustavus and Louise Pfeiffer Research Foundation with peer funders

About Gustavus and Louise Pfeiffer Research Foundation

How much does Gustavus and Louise Pfeiffer Research Foundation give?
Gustavus and Louise Pfeiffer Research Foundation reported 3 grants totaling $651,000 in its FY2024 IRS filing. It funded between 3 and 8 organizations a year over FY2020 to FY2022.
What does Gustavus and Louise Pfeiffer Research Foundation fund?
By grant dollars over FY2020 to FY2024, its largest causes are Education (52%), Health (48%), Arts & Culture (0%).
Who are Gustavus and Louise Pfeiffer Research Foundation's largest grantees?
By total granted over FY2020 to FY2024: Huntington Medical Research Institutes ($2.9M), Yale University ($1.4M), Foundation at Nj Institute of Technology ($1.3M).
Does Gustavus and Louise Pfeiffer Research Foundation fund new organizations?
In FY2022, 13% of the organizations it funded were first-time grantees.
Does Gustavus and Louise Pfeiffer Research Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Gustavus and Louise Pfeiffer Research Foundation?
Its strongest co-funders, measured against what their size predicts, include Fidelity Investments Charitable Gift Fund.
Where is Gustavus and Louise Pfeiffer Research Foundation based?
Gustavus and Louise Pfeiffer Research Foundation is based in DE.

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