Jonathan & Marjorie Slass Foundation

Private foundation · Grantmaker Warren, NJ EIN: 90-0587767

Jonathan & Marjorie Slass Foundation is a private foundation, based in Warren, NJ. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $363 in total assets.

Jonathan & Marjorie Slass Foundation at a glance

Total assets
$363
+0.0% vs 2024
Latest 990 filing
Form 990-PF, 2025 View filing

Data from IRS Form 990-PF, 2025; updated September 2026.

Who Jonathan & Marjorie Slass Foundation funds

How this funder distributes its grants

Grant Size Distribution

2 grants across all recorded years

2<$50K$50–100K$100–250K$250–500K$500K–1M$1–5M$5M+

The most common grant size was under $50K: 2 grants of 2 (100%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

10states
+2 more states

Cities

BridgewaterNashvilleNew YorkTeaneckMatawanBethesdaCharlestonDallasEast WindsorIndianapolisMonroviaRockvilleRye BrookSomersetSomervilleTroyWarrenWashington

How Jonathan & Marjorie Slass Foundation gives

  • Giving fell 100% from 2020 to 2023. Method
  • In 2024 it paid out 172% of its IRS minimum distribution (the 5% rule). Method

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

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$20K$40K$60K$80K17 grants2019 9 grants2020 1 grant2021 0 grants2022 1 grant2023 0 grants2024 0 grants2025

From 2019 to 2023, annual grant giving ranged from $100 (2023) to $76K (2019). In 2023 it made 1 grant totaling $100.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
Sharsheret Teaneck, NJUnrestricted Grant to Support the Organization's Exempt Purpose.$100
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Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsQualifying DistributionsNet Investment IncomeDistributable Amount
2025$363——————$18
2024$363—$31——$31—$18
2023$394$3$161$1001$160$2$23
2022$552$1$4————$27
2021$555$10,003$10,313$10,0001$10,031—$33
2020$865$2,671$59,541$58,8599—$19,999$1,065
2019$62,078$47,685$77,121$75,80017—$47,685$28

Under IRS private-foundation payout rules, Jonathan & Marjorie Slass Foundation reported a distributable amount of $18 for 2025 — the minimum it must pay out in qualifying distributions.

Leadership & Key People

Officers and directors from IRS filings

Jonathan & Marjorie Slass Foundation's 2025 filing lists 2 officers; none of the 2 officers listed in 2025 report compensation.

Officers on the 2025 filing

  • Jonathan Slass

    Trustee

    On filings since 2019

    0.5 hrs/week

    No compensation reported

  • Marjorie Slass

    Trustee

    On filings since 2019

    0.5 hrs/week

    No compensation reported

Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Frequently asked questions about Jonathan & Marjorie Slass Foundation

How large is Jonathan & Marjorie Slass Foundation?

Jonathan & Marjorie Slass Foundation reported $363 in total assets on its 2025 IRS Form 990-PF.

Where does Jonathan & Marjorie Slass Foundation operate?

Jonathan & Marjorie Slass Foundation has awarded grants in California, District of Columbia, Indiana, Maryland, Michigan, New Jersey, New York, South Carolina, Tennessee, Texas.

How much is Jonathan & Marjorie Slass Foundation required to give away each year?

Private foundations must generally distribute about 5% of their assets annually. For 2025, Jonathan & Marjorie Slass Foundation reported a distributable amount of $18 on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.

What is Jonathan & Marjorie Slass Foundation's EIN?

Jonathan & Marjorie Slass Foundation's EIN (Employer Identification Number) is 90-0587767. IRS Form 990 filing data is available on this page for 2019–2025.

Data last updated September 2026. Sourced from IRS Form 990-PF filings.

Data update history

(7)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990-PF for fiscal year 2024 (received by the IRS November 14, 2025)
  2. Updated Form 990-PF for fiscal year 2025 (received by the IRS May 1, 2026)
  3. Added Form 990-PF for fiscal year 2019 (received by the IRS April 16, 2020)
  4. Updated Form 990-PF for fiscal year 2020 (received by the IRS May 17, 2021)
  5. Updated Form 990-PF for fiscal year 2021 (received by the IRS March 8, 2022)
  6. Updated Form 990-PF for fiscal year 2022 (received by the IRS November 3, 2023)
  7. Updated Form 990-PF for fiscal year 2023 (received by the IRS May 23, 2024)

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The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open

Figures come from Jonathan & Marjorie Slass Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.

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