Interlaken Foundation Inc

Foundation · Grantmaker New York, NY EIN: 52-2339479

Interlaken Foundation Inc is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in New York, NY. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $366.8M in total assets. In 2024, it awarded 4 grants totaling $18.4M. Net investment income was $20.9M.

Key facts about Interlaken Foundation Inc

EIN: 52-2339479
Latest 990 filing: Form 990-PF, 2024
Annual giving (2024): $18,400,000
Grants made (2024): 4
Average grant: $4,600,000
Median grant: $3,800,000
Total assets: $366,754,527
Primary geography: California (95% of itemized 2024 grant dollars)

Data from IRS Form 990-PF, 2024; updated September 2026.

Who Interlaken Foundation Inc funds

By grant dollars, the top recipient states for Interlaken Foundation Inc's 4 itemized 2024 grants were California (95%). None of its 4 grants with a stated purpose were described as general or operating support. Recurring purposes include "For Organization's Charitable Use" (3 grants).

How Interlaken Foundation Inc gives

Giving held roughly steady from 2021 to 2024 (+17%). Method
In 2024 it paid out 95% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method

From the foundation's IRS Form 990-PF filings. Methodology.

Next steps with Interlaken Foundation Inc

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Financial Overview

From 2024 IRS Form 990-PF · View filing

Total Assets

$366.8M

+0.6% YoY

Annual Giving

$18.4M

+10.8% YoY

Grant Count

+0.0% YoY

Avg Grant Size

$4.6M

+10.8% YoY

Under IRS private-foundation payout rules, Interlaken Foundation Inc reported a distributable amount of $19.6M for 2024 — the minimum it must pay out in qualifying distributions.

About Interlaken Foundation Inc

Based on IRS filings

Focus Areas

Philanthropy, Voluntarism & Grantmaking

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Geographic Focus

Where this funder awards grants

Grant Distribution by State

California $17.6M (95%)

Colorado $600K (3%)

Massachusetts $250K (1%)

Share of all 4 itemized 2024 grant dollars.

States

California Colorado District of Columbia Massachusetts Maryland New Hampshire New York Virginia

Cities

Santa CruzSan FranciscoBostonCambridgeNew YorkWashingtonArlingtonBethesdaBuffaloConcordDenverHanoverPittsfieldSheffieldWilliamstown

Financial History

Multi-year comparison from IRS filings

Revenue

Expenses

Qualifying Distributions

Net Investment Income

Metric	2024	2023	2022
Total Assets	$366,754,527	$364,394,579	$372,928,514
Revenue	$24,618,181	$11,583,338	$41,079,708
Expenses	$22,258,233	$20,117,273	$20,403,825
Qualifying Distributions	$18,553,326	$16,630,978	$17,568,500
Net Investment Income	$20,860,007	$5,967,229	$8,659,437
Distributable Amount	$19,618,777	$18,365,596	$17,552,021

Data update history

When this profile's IRS filing data changed on Grantable

March 1, 2026 IRS filings on file for fiscal years 2020–2024

Giving Over Time

Total grant dollars and number of grants per year

Grant Insights

How this funder distributes its grants

Top Recipients

Top 4 recipients in 2024

Grant Size Distribution

26 grants across all recorded years

Giving History

Grant recipients and amounts by year

Among its reported 2024 grants, the largest recipients include Wildlife Conservation Network ($10,550,000), Community Foundation of Santa Cruz County ($7,000,000), Unite America Institute ($600,000).

Recipient	Purpose	Amount
WILDLIFE CONSERVATION NETWORK San Francisco, CA	FOR ORGANIZATION'S CHARITABLE USE	$10,550,000
Community Foundation of Santa Cruz County Santa Cruz, CA	FOR ORGANIZATION'S CHARITABLE USE	$7,000,000
UNITE AMERICA INSTITUTE Denver, CO	FOR ORGANIZATION'S CHARITABLE USE	$600,000
RANK THE VOTE INC Cambridge, MA	FOR THE ORGANIZATION'S CHARITABLE USE	$250,000

Leadership & Key People

Officers and directors from IRS filings

Compensation Overview

No officer or director reported compensation in the available filings.

From 2024 IRS filing

Name	Title	Hours	Compensation
Christopher Wilmers	President	—	—

Subject Areas

Focus areas based on grantmaking activity

Philanthropy, Voluntarism & Grantmaking

Frequently Asked Questions

What is Interlaken Foundation Inc?

Interlaken Foundation Inc is a private foundation focused on Philanthropy, Voluntarism & Grantmaking, based in New York, NY. It holds $366.8M in total assets as of 2024.

How large is Interlaken Foundation Inc?

As of 2024, Interlaken Foundation Inc holds $366.8M in total assets with $24.6M in annual revenue. It awarded 4 grants totaling $18.4M in 2024.

Where does Interlaken Foundation Inc operate?

Interlaken Foundation Inc has awarded grants in California, Colorado, District of Columbia, Massachusetts, Maryland, New Hampshire, New York, Virginia.

What size grants does Interlaken Foundation Inc award?

In 2024, Interlaken Foundation Inc awarded 4 grants totaling $18.4M — an average of about $4.6M per grant, based on its IRS Form 990 filings.

How much is Interlaken Foundation Inc required to give away each year?

Private foundations must generally distribute about 5% of their assets annually. For 2024, Interlaken Foundation Inc reported a distributable amount of $19.6M on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.