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California · Public charity

The Hide and Seek Foundation

To find a cure for the sixty-four strains of lysosomal disease.

$56k
Granted FY2024(still arriving)
4
Itemized grants FY2024
7
Organizations funded FY2023
57%
First-time grantees FY2023
Read the full brief
Itemized, FY2024
$53k
The rest is grants the schedule does not break out
Median grant, FY2024
$12,500
Largest grant, FY2024
$21,000
Organizations funded a year
2 to 7
FY2017 to FY2023
States reached, FY2024
3
Total assets, FY2024
$731k

How open it is to new grantees

In FY2023, 57% of the organizations The Hide and Seek Foundation funded were first-time grantees, receiving 44% of its grant dollars.

New vs renewed · share of each year

In FY2023, 56% of grant dollars renewed an existing relationship; $136k went to new ones.

50%100%’18’19’20’21’22’23
RenewedFirst-time

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

’18’19’20’21’22’23
HealthEducationScience & TechOther
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 arriving4$53k25%
FY20237$307k57%
FY20223$78k100%
FY20212$100k100%
FY20203$59k33%
FY20194$86k0%
FY20184$137k50%
FY20175$308kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Health$943kEducation$465kScience & Tech$2k

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

IL
WI
MI
NY
IA
IN
PA
CT
RI
CA
MO
VA

Top grantees

Largest recipients by total granted, FY2017 to FY2024, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
The Board of Trustees of the University of Illinois$119,5003n/a
Regents of the University of Michigan$102,5003n/a
Hope For Marian$60,000126%
Washington University$50,25820%
Icahn School of Medicine at Mount Sinai$40,00020%
Sanford Burnham Prebys Medical Discovery Institute$20,62510%
Dana's Angels Research Trust$17,50019%
National Niemann-Pick Disease Foundation Inc$17,00041%
State University of Iowa Foundation$12,50010%
Gordon Research Conferences Inc$2,00010%

Plus 8 recipients with no EIN on record ($685k), not named here.

Where it is load-bearing

The Hide and Seek Foundation supplied at least a quarter of the budget for 1 of its grantees at some point. The chart plots its 8 largest grantees; load-bearing ones sit top left.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetHope For Marian: $60,000 over 1y, 26% of budgetWashington University: $50,258 over 2y, 0.0% of budgetIcahn School of Medicine at Mount Sinai: $40,000 over 2y, 0.0% of budgetSanford Burnham Prebys Medical Discovery Institute: $20,625 over 1y, 0.0% of budgetDana's Angels Research Trust: $17,500 over 1y, 8.6% of budgetNational Niemann-Pick Disease Foundation Inc: $17,000 over 4y, 1.3% of budgetState University of Iowa Foundation: $12,500 over 1y, 0.0% of budgetGordon Research Conferences Inc: $2,000 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 8.

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.

Fidelity Investments Charitable Gift FundMA6.1× affinity5 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

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 The Hide and Seek Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to The Hide and Seek Foundation?

Find your warmest path to The Hide and Seek 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.

About The Hide and Seek Foundation

How much does The Hide and Seek Foundation give?
The Hide and Seek Foundation reported 4 itemized grants totaling $53,000, out of $56,400 in total grant expense reported on the return in its FY2024 IRS filing. It funded between 2 and 7 organizations a year over FY2017 to FY2023.
What does The Hide and Seek Foundation fund?
By grant dollars over FY2017 to FY2024, its largest causes are Health (67%), Education (33%), Science & Tech (0%).
Who are The Hide and Seek Foundation's largest grantees?
By total granted over FY2017 to FY2024: The Board of Trustees of the University of Illinois ($120k), Regents of the University of Michigan ($103k), Hope For Marian ($60k).
Does The Hide and Seek Foundation fund new organizations?
In FY2023, 57% of the organizations it funded were first-time grantees.
Which funders back the same organizations as The Hide and Seek Foundation?
Its strongest co-funders, measured against what their size predicts, include Fidelity Investments Charitable Gift Fund, Amazonsmile Foundation.
Where is The Hide and Seek Foundation based?
The Hide and Seek Foundation is based in CA.

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 19 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 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

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