Margaret Q Landenberger Research Foundation
The Margaret Q Landenberger Research Foundation is a private foundation based in Wilmington, Delaware. Its 2025 filing lists grants to universities, hospitals, and research institutions, with stated purposes including research support, general support, and general purpose.
Margaret Q Landenberger Research Foundation at a glance
In short: Margaret Q Landenberger Research Foundation gave $1.0M across 9 grants in 2025 (avg $111K), top state Pennsylvania. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $1,000,000
- +0.0% vs 2024
- Grants made (2025)
- 9
- +50.0% vs 2024
- Average grant
- $111,111
- -33.3% vs 2024
- Median grant
- $100,000
- Total assets
- $16,706,979
- -1.7% vs 2024
- Primary geography
- Pennsylvania (40% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026.
How to apply to Margaret Q Landenberger Research Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: 4250 Lancaster Pike Suite 150, Wilmington, DE 19805
Phone: (813) 263-4133
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Margaret Q Landenberger Research Foundation funds
How this funder distributes its grants
Top Recipients
Top 9 recipients in 2025
The largest 2025 recipient was Massachusetts General Hospital ($200K). Together the top 9 received $1.0M.
Grant Size Distribution
34 grants across all recorded years
The most common grant size was in the $100–250K range: 30 grants of 34 (88%).
Geographic Focus
Where this funder awards grants
The reported 2025 share of grant dollars by recipient state was Pennsylvania 40%, Massachusetts 20%, Maryland 10%, Georgia 10%, and New York 10%.
Grant Distribution by State
Share of 2025 grant dollars across all 9 itemized grants.
Cities
How Margaret Q Landenberger Research Foundation gives
- Giving held roughly steady from 2022 to 2025 (−2%). Method
- In 2025 it paid out 101% 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
From 2019 to 2025, annual grant giving ranged from $641K (2019) to $1.0M (2022). In 2025 it made 9 grants totaling $1.0M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Massachusetts General Hospital Boston, MA | Research Support | $200,000 |
| Children's Hospital of Philadelphia Philadelphia, PA | Research Support | $100,000 |
| Drexel University Philadelphia, PA | General Support | $100,000 |
| John's Hopkins University Baltimore, MD | General Purpose | $100,000 |
| The Wistar Institute Philadelphia, PA | General Purpose | $100,000 |
| Thomas Jefferson University Philadelphia, PA | Research Support | $100,000 |
| University of Pennsylvania Philadelphia, GA | Research Support | $100,000 |
| University of Rochester Rochester, NY | General Purpose | $100,000 |
| University of Wisconsin Madison, WI | Research Support | $100,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $16,706,979 | $982,102 | $1,203,536 | $1,000,000 | 9 | $1,128,389 | $918,058 | $1,114,781 |
| 2024 | $16,987,530 | $697,386 | $1,197,340 | $1,000,000 | 6 | $1,126,345 | $633,026 | $1,095,303 |
| 2023 | $17,487,486 | $457,867 | $1,091,725 | $903,326 | 7 | $1,019,550 | $418,655 | $1,006,206 |
| 2022 | $18,121,336 | $1,321,729 | $1,225,583 | $1,021,233 | 7 | $1,142,435 | $1,264,505 | $1,024,528 |
| 2021 | $18,025,213 | $2,486,551 | $1,077,327 | $866,048 | 5 | $1,000,233 | $2,420,355 | $1,155,418 |
| 2020 | $16,615,980 | $1,262,511 | $1,105,594 | $900,000 | 6 | — | $1,205,508 | $1,007,492 |
| 2019 | $16,459,062 | $1,158,295 | $819,355 | $641,000 | 6 | — | $1,094,621 | $991,592 |
Under IRS private-foundation payout rules, Margaret Q Landenberger Research Foundation reported a distributable amount of $1.1M for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
No mission statement for the foundation is provided. Its 2025 grants show support for research and general-purpose activities at universities, hospitals, and research institutes. For example, the University of Rochester describes its mission as including higher education, research, and charitable patient care; Thomas Jefferson University describes its work as including education, research, and discovery.
Grantmaking
In 2025, the foundation reported 9 grants totaling $1,000,000. Grants ranged from $100,000 to $200,000, with a median of $100,000. Recipients included Massachusetts General Hospital ($200,000 for research support), Children’s Hospital of Philadelphia ($100,000 for research support), Drexel University ($100,000 for general support), Johns Hopkins University ($100,000 for general purpose), The Wistar Institute ($100,000 for general purpose), Thomas Jefferson University ($100,000 for research support), University of Pennsylvania ($100,000 for research support), University of Rochester ($100,000 for general purpose), and University of Wisconsin ($100,000 for research support).
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Brown Brothers Harriman TR Co Of De as trustee.
Margaret Q Landenberger Research Foundation is led by Brown Brothers Harriman Tr Co Of De, Trustee on every filing since 2019 — the only officer listed, and compensated.
Officers on the 2025 filing
Brown Brothers Harriman Tr Co Of De
Trustee
On filings since 2019
1 hr/week
$100K (2019) → $113K (2025)
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.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $113K, to Brown Brothers Harriman Tr Co of DE (Trustee).
Frequently asked questions about Margaret Q Landenberger Research Foundation
How much does Margaret Q Landenberger Research Foundation give each year?
Margaret Q Landenberger Research Foundation gave $1.0M across 9 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $1.0M across 6 grants.
What is Margaret Q Landenberger Research Foundation's typical grant size?
Margaret Q Landenberger Research Foundation's median grant in 2025 was $100,000, and its average grant was $111,111, across 9 grants on its 2025 IRS Form 990-PF.
Where does Margaret Q Landenberger Research Foundation give grants?
Margaret Q Landenberger Research Foundation's top state is Pennsylvania, with 40% of the grant dollars itemized on its 2025 IRS Form 990-PF. The next largest states were Massachusetts (20%) and Maryland (10%). The most frequent recipient cities were Philadelphia, PA (4 grants).
Does Margaret Q Landenberger Research Foundation give general operating support?
Yes: 44% of Margaret Q Landenberger Research Foundation's 2025 grants with a stated purpose (4 of 9) were for general or operating support, per its 2025 IRS Form 990-PF. Recurring purposes include "Research Support" (5 grants).
Who are Margaret Q Landenberger Research Foundation's largest grantees?
Margaret Q Landenberger Research Foundation's largest 2025 grantees include Massachusetts General Hospital ($200,000), Children's Hospital of Philadelphia ($100,000) and Drexel University ($100,000), according to its 2025 IRS Form 990-PF. Together they received 40% of its itemized 2025 grant dollars.
How large is Margaret Q Landenberger Research Foundation?
Margaret Q Landenberger Research Foundation reported $16.7M in total assets on its 2025 IRS Form 990-PF. It paid out $1.1M in qualifying distributions that year, against a required minimum of $1.1M (roughly 5% of its investment assets).
What does Margaret Q Landenberger Research Foundation fund?
No mission statement for the foundation is provided. Its 2025 grants show support for research and general-purpose activities at universities, hospitals, and research institutes. See mission & focus areas ↑
How do I apply for a grant from Margaret Q Landenberger Research Foundation?
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Margaret Q Landenberger Research Foundation's EIN?
Margaret Q Landenberger Research Foundation's EIN (Employer Identification Number) is 65-0350358. IRS Form 990 filing data is available on this page for 2019–2025.
Does Margaret Q Landenberger Research Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(3)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2019 (received by the IRS May 8, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 6, 2026)
- IRS filings on file for fiscal years 2020–2024
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