Isadora J Seibert Foundation
Isadora J Seibert Foundation is a private foundation focused on Diseases, Disorders & Medical Disciplines, based in Millburn, NJ. IRS filing data is available from 2019 through 2024. As of 2024, the organization holds $42K in total assets. In 2024, it awarded 5 grants totaling $9K. Net investment income was $15.
Isadora J Seibert Foundation at a glance
In short: Isadora J Seibert Foundation gave $9K across 5 grants in 2024 (avg $2K), mostly in New Jersey. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $9,200
- +53.3% vs 2023
- Grants made (2024)
- 5
- +25.0% vs 2023
- Average grant
- $1,840
- +22.7% vs 2023
- Median grant
- $1,800
- Total assets
- $41,600
- +5.8% vs 2023
- Primary geography
- New Jersey (78% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026.
Who Isadora J Seibert Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2024
The largest 2024 recipient was Fibrofighters Foundation ($2K).
Organizations only. It also paid 4 grants to individuals ($7,200), which are not listed by name.
Grant Size Distribution
20 grants across all recorded years
The most common grant size was under $50K: 20 grants of 20 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2024 grant dollars across all 5 itemized grants.
States
Cities
How Isadora J Seibert Foundation gives
- Giving grew 31% from 2021 to 2024. Method
- In 2024 it paid out well above 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
From 2019 to 2024, annual grant giving ranged from $5K (2020) to $9K (2024). In 2024 it made 5 grants totaling $9K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Fibrofighters Foundation Temecula, CA | Fibromellar translational and pilot research projects to direcly help the patient community | $2,000 |
| 4 grants to individuals Recipients not named | — | $7,200 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2024 | $41,600 | $12,587 | $10,292 | $9,200 | 5 | $9,200 | $15 | $81 |
| 2023 | $39,305 | $5,907 | $7,270 | $6,000 | 4 | $6,000 | $22 | $84 |
| 2022 | $40,668 | $7,855 | $6,691 | $4,500 | 3 | $4,500 | $16 | $81 |
| 2021 | $39,504 | $9,776 | $7,960 | $7,000 | 5 | $7,000 | $7 | $77 |
| 2020 | $37,688 | $4,602 | $6,062 | $4,500 | 3 | — | $159 | $78 |
| 2019 | $39,148 | $8,850 | $8,263 | $7,000 | 4 | — | $465 | $1,867 |
Under IRS private-foundation payout rules, Isadora J Seibert Foundation reported a distributable amount of $81 for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Isadora J Seibert Foundation is led by Phyllis Seibert, President on every filing since 2019; none of the 5 officers listed in 2024 report compensation.
Officers on the 2024 filing
Phyllis Seibert
President
On filings since 2019
5 hrs/week
No compensation reported
Alan Jacobs
Treasurer
On filings since 2019
1 hr/week
No compensation reported
Hilton Seibert
Secretary
On filings since 2019
1 hr/week
No compensation reported
Richard Seibert
Vice President
On filings since 2019
5 hrs/week
No compensation reported
Tania Seibert
Officer
On filings since 2019
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2019–2024. "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 Isadora J Seibert Foundation
How much does Isadora J Seibert Foundation give each year?
Isadora J Seibert Foundation gave $9K across 5 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $6K across 4 grants.
What is Isadora J Seibert Foundation's typical grant size?
Isadora J Seibert Foundation's median grant in 2024 was $1,800, and its average grant was $1,840, across 5 grants on its 2024 IRS Form 990-PF.
Where does Isadora J Seibert Foundation give grants?
Isadora J Seibert Foundation gives mostly in New Jersey: 78% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest state was California (22%).
Does Isadora J Seibert Foundation give general operating support?
Not in 2024: none of the 5 grants with a stated purpose on Isadora J Seibert Foundation's 2024 IRS Form 990-PF were described as general or operating support.
How large is Isadora J Seibert Foundation?
Isadora J Seibert Foundation reported $42K in total assets on its 2024 IRS Form 990-PF. It paid out $9K in qualifying distributions that year, against a required minimum of $81 (roughly 5% of its investment assets).
What is Isadora J Seibert Foundation?
Isadora J Seibert Foundation is a private foundation focused on Diseases, Disorders & Medical Disciplines, based in Millburn, NJ. It holds $42K in total assets as of 2024.
What is Isadora J Seibert Foundation's EIN?
Isadora J Seibert Foundation's EIN (Employer Identification Number) is 46-5283785. IRS Form 990 filing data is available on this page for 2019–2024.
Data last updated October 2026. Sourced from IRS Form 990-PF filings.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS January 19, 2021)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS February 15, 2022)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 15, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS November 13, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS November 15, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS November 17, 2025)
- IRS filings on file for fiscal years 2019–2024
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