Leinweber Foundation
At a glance
This funder does not accept unsolicited applications. The foundation chooses the organisations it funds itself.
Key takeaways
- The Leinweber Foundation funds fundamental scientific research and related fellowships, STEM educational opportunity and scholarships (particularly for students from underserved and rural areas of Michigan), literacy and environmental protection, with its Michigan work given priority.
- It does not accept unsolicited proposals, instead working closely with expert partners it has identified itself, so a grant writer should not send in a cold application.
- Most grants fall between $10,000 and $2,950,000, with a median of $120,000, and half of its grants are $120,000 or less, so a modest request in that range is realistic once a relationship exists.
- The foundation looks highly relationship-led: 91% of its grant dollars went to organisations it had also funded in the previous two filings, so new, uninvited applicants face a steep climb.
- Given its invitation-only approach, organisations should focus on building genuine connections and visibility in its focus areas rather than preparing a formal unsolicited application.
Overview
Leinweber Foundation is a US private foundation based in Birmingham, MI.
What they fund
Profile derived from the foundation's IRS Form 990-PF filings (TY2024, TY2023, TY2022) and its website, with every statement checked against those sources. Sources read on 7 October 2026.
Priority Areas
The Leinweber Foundation invests in fundamental scientific research, regarding it as a building block of innovation, and supports related research and fellowships in fundamental sciences, engineering, space and medicine. It also supports educational opportunity, with a focus on STEM, scholarships—especially for students from underserved and rural areas of Michigan—and educational infrastructure. Its commitment to Michigan includes literacy, environmental protection and other local priorities important to its family and community. It works closely with expert partners to advance their work and enable their success.
Themes
- Fundamental scientific research
- Educational opportunity
- Literacy
- Environmental protection
Geographic Focus
Priority: Michigan.
How to apply
The foundation does not accept unsolicited proposals; it collaborates closely with expert partners to advance their work.
Application success factors
- Repeat giving: In its TY2024 filing, 91% of its grant dollars to organisations went to organisations it had also funded in its TY2022 or TY2023 filing.
- Grant size: Across its TY2022, TY2023 and TY2024 filings, half of its 29 grants to organisations were $120,000 or less.
What the foundation says:
- The foundation rigorously identifies opportunities for significant, long-term impact in its focus areas.
Where grants go
From grants to organisations in the foundation’s filings for tax years 2022–2024.
Grant dollars by state
- The largest single recipient received 81% of grant dollars to organisations.
- In tax year 2024, 91% of grant dollars went to organisations Leinweber Foundation had funded in earlier filings.
- No grants were paid directly to organisations outside the US.
- 2% of grant dollars went to intermediaries that regrant to other organisations.
Grants
How much do they typically give?
Share of 15 grants in tax year 2024 by size
Median $75,000 (tax year 2024)
The largest grants to organisations in the foundation’s latest filing:
- University of Michigan · Charitable$3,000,0842024 tax year
- National Wildlife Federation · Charitable$200,0002024 tax year
- Beyond Basics · Charitable$150,0002024 tax year
- Michigan College Access Network · Charitable$150,0002024 tax year
- University of Michigan · Ch$120,0002024 tax year
- Michigan State University · Charitable$120,0002024 tax year
- Science Philanthropy Alliance · Charitable$100,0002024 tax year
- Cranbrook · Charitable$75,0002024 tax year
Grants to organisations listed in the foundation’s Form 990-PF filings. Grants to individuals are not shown.
Officers and directors
- Jessica Leinweber — Secretary, Director, Executive Director
- Ashley Leinweber — Vice President, Director
- David Leinweber — Director
- Claudia Babiarz — Director
- Larry Leinweber — President , Treasurer, Director
From the latest Form 990-PF filing
3 years of tax filings
| Year | Total expenses | Grants paid | Assets | Filing document |
|---|---|---|---|---|
| 2022 tax year | $5,171,396 | $4,600,000 | $79,599,419 | Filing for 2022 tax year |
| 2023 tax year | $4,264,742 | $3,705,000 | $87,127,188 | Filing for 2023 tax year |
| 2024 tax year | $4,947,870 | $4,075,084 | $101,393,810 | Filing for 2024 tax year |
Figures from the foundation’s IRS Form 990-PF filings. Assets are at fair market value at year end. The document icon links to each year’s filing on ProPublica Nonprofit Explorer.
Sources
Registers and filings
Other sources
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At a glance

Applying to Leinweber Foundation?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- (989) 573-4095
- Birmingham, MI
- leinweberfoundation.org

Applying to Leinweber Foundation?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- (989) 573-4095
- Birmingham, MI
- leinweberfoundation.org