The Dietrich W Botstiber Foundation
The Dietrich W. Botstiber Foundation is a private foundation based in Media, Pennsylvania. Its programs support Austrian-American studies, wildlife fertility control, and humanitarian and development work, with a current focus on rural water supply in Laos.
The Dietrich W Botstiber Foundation at a glance
In short: The Dietrich W Botstiber Foundation gave $820K across 20 grants in 2025 (avg $41K), mostly in Ohio. 57% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $819,537
- +9.0% vs 2024
- Grants made (2025)
- 20
- -4.8% vs 2024
- Average grant
- $40,977
- +14.4% vs 2024
- Median grant
- $7,750
- Total assets
- $51,897,713
- +10.1% vs 2024
- New grantees (estimate)
- 57% first-time grantees (8 of 14, 2025; small sample)
- Primary geography
- Ohio (75% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to The Dietrich W Botstiber Foundation
- How to Apply
-
BIWFC no longer accepts unsolicited proposals and says it will engage with organizations whose work aligns with its focus on systemic and interdisciplinary issues.
- Contact
Application contact: Kevin J Mcnamara
Mailing address: 200 E State St Ste 306-A PO Box, 1819, Media, PA 19063
Phone: (610) 566-3375
Email: kjmcnamara@botstiber.org
Website: https://botstiber.org
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Open Grants
1 open opportunity from The Dietrich W Botstiber Foundation
Who The Dietrich W Botstiber Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Fidelity Donor Advised Fund ($615K). Together the top 10 received $761K.
Organizations only. It also paid 6 grants to individuals ($45,541), which are not listed by name.
Grant Size Distribution
147 grants across all recorded years
The most common grant size was under $50K: 138 grants of 147 (94%).
Geographic Focus
Where this funder awards grants
In 2025, 75% of grant dollars went to recipients in Ohio, 8% to New York, 6% to Pennsylvania, and 1% to California; the recipient state for 9% was not identified in the filing data. The foundation’s program descriptions also identify work related to Austria and the former Habsburg Empire, wildlife coexistence worldwide, and humanitarian and development assistance in Southeast Asia, currently focused on rural water supply in Laos.
Grant Distribution by State
Share of 2025 grant dollars across all 20 itemized grants.
States
Cities
Is The Dietrich W Botstiber Foundation open to new grantees?
57%
first-time grantees, 2025
In 2025, 8 of 14 grantees (57%) were first-time recipients. With only 14 grantees, that is a small sample: one grantee more or less moves the share by about 7 points. First grants averaged $11K; repeat grants $114K. How we count
Medians: $7K first-time, $13K repeat.
- 29% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (−15%). Method
- In 2025 it paid out 77% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2019–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2025, annual grant giving ranged from $349K (2019) to $1.1M (2023). In 2025 it made 20 grants totaling $820K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Fidelity Donor Advised Fund Cincinnati, OH | Grant to Support Qualified Charitable Organizations | $615,000 |
| Institute for International Education New York, NY | Promote an understanding of the historic relationship between united states and austria | $42,000 |
| Delaware Valley Science Fairs Inc Exton, PA | Grant to provide four-year scholarships to students selected by the Delaware valley science fairs and for general operating support of the science fairs. | $35,000 |
| Queens College Foundation New York, NY | Promote an understanding of the historic relationship between united states and austria | $15,000 |
| University of West Bohemia in Pilsen | Promote an understanding of the historic relationship between united states and austria | $11,500 |
| University of California Berkeley the Regents of the University of CA Los Angeles, CA | Promote an understanding of the historic relationship between united states and austria | $11,000 |
| 6 grants to individuals Recipients not named | — | $45,541 |
| University of Vienna | Promote an understanding of the historic relationship between united states and austria | $10,000 |
| Austrian Consulate General Cultural Affairs Section New York, NY | Promote an understanding of the historic relationship between united states and austria | $7,500 |
| Lugwig Maximillian University of Munich | Promote an understanding of the historic relationship between united states and austria | $7,396 |
Ready to take the next step with The Dietrich W Botstiber Foundation?
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 | $51,897,713 | $3,254,746 | $1,875,015 | $819,537 | 20 | $1,811,945 | $2,987,566 | $2,344,683 |
| 2024 | $47,140,785 | $1,964,431 | $2,107,916 | $751,988 | 21 | $1,936,546 | $1,889,740 | $1,990,315 |
| 2023 | $41,039,766 | $2,018,196 | $2,276,245 | $1,131,841 | 39 | $2,141,374 | $1,898,986 | $1,819,939 |
| 2022 | $39,166,976 | $1,705,208 | $2,086,366 | $963,093 | 33 | $2,033,368 | $1,371,238 | $2,063,046 |
| 2021 | $48,239,705 | $2,744,406 | $1,673,476 | $713,509 | 34 | — | $2,488,001 | $2,009,912 |
| 2020 | $40,495,683 | $2,905,654 | $1,533,491 | $507,181 | 27 | — | $2,746,552 | $1,739,545 |
| 2019 | $37,467,853 | $1,529,865 | $1,341,896 | $348,896 | 26 | — | $1,307,538 | $1,743,018 |
Under IRS private-foundation payout rules, The Dietrich W Botstiber Foundation reported a distributable amount of $2.3M for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated October 2026.
Mission & Focus Areas
The foundation’s programs include the Botstiber Institute for Austrian-American Studies (BIAAS), the Botstiber Institute for Wildlife Fertility Control (BIWFC), and Botstiber Water Projects. BIAAS promotes understanding of the historic relationship between the United States and Austria, including the lands of the former Habsburg Empire. Its activities include grants and fellowships in history, politics, economics, law, cultural studies, and public history, as well as events, publications, and public programming. BIWFC works to advance effective, sustainable fertility control methods to mitigate human-wildlife conflicts and promote coexistence worldwide. The foundation’s water projects support humanitarian and development assistance in Southeast Asia, with a current focus on rural water supply in Laos.
The foundation’s 2024 filing also describes support for a food-security project in Lao PDR through CARE USA. Its website notes that legacy projects have helped fund scholarships and animal-protection agencies. Among 2025 grantees, Delaware Valley Science Fairs says its mission is to bring parents, teachers, and industry together to help young people develop as community members. The Starfish Foundation says it helps at-risk Ecuadorian youth achieve post-secondary education. The Czechoslovak Genealogical Society International describes its work as providing educational, cultural, historical, and genealogical resources, while the Foundation for Delaware County says it works to promote an equitable, vibrant future for the county.
Grantmaking
In filing year 2025, the foundation reported 20 grants totaling $819,537. Grant amounts ranged from $100 to $615,000, with a median of $7,750. The largest reported grant was $615,000 to Fidelity Donor Advised Fund, for support of qualified charitable organizations. Other notable grants included $42,000 to the Institute for International Education, $15,000 to Queens College Foundation, and $7,500 to the Austrian Consulate General Cultural Affairs Section, each to promote understanding of the historic relationship between the United States and Austria. Delaware Valley Science Fairs received $35,000 for four-year scholarships selected by the science fairs and general operating support.
The foundation’s 2024 filing says it does not restrict giving to preselected organizations. For BIAAS research and project proposals, the foundation’s published instructions call for a proposal summary, a narrative of up to 2,000 words, an itemized budget, information about other support, a CV and bibliography, and two reference letters; relevant organizations must also provide their 501(c)(3) determination letter and board-member list. The published March 31, 2026 deadline is past.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Terrance Kline and Mary VZ Wachterhauser as co-trustees.
The Dietrich W Botstiber Foundation's 2025 filing lists 2 officers; all 2 officers listed in 2025 are compensated.
Officers on the 2025 filing
Terrance Kline
Co-Trustee
Co-Trustee & Administrator → Co-Trustee, 2024
On filings since 2019
1 hr/week
$57K (2019) → $59K (2025)
Mary Vz Wachterhauser
Co-Trustee
On filings since 2024
1 hr/week
$5K (2024) → $23K (2025)
Former officers (1)
- Former: Dorothy Boylan (2019–2024) — Co-Trustee
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 $59K, to Terrance Kline (Co-Trustee). 2 officers or directors reported compensation on that filing.
Frequently asked questions about The Dietrich W Botstiber Foundation
How much does The Dietrich W Botstiber Foundation give each year?
The Dietrich W Botstiber Foundation gave $820K across 20 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $752K across 21 grants.
What is The Dietrich W Botstiber Foundation's typical grant size?
The Dietrich W Botstiber Foundation's median grant in 2025 was $7,750, and its average grant was $40,977, across 20 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from The Dietrich W Botstiber Foundation that year got $11K on average.
Where does The Dietrich W Botstiber Foundation give grants?
The Dietrich W Botstiber Foundation gives mostly in Ohio: 75% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were New York (8%) and Pennsylvania (6%). The most frequent recipient cities were New York, NY (3 grants).
Does The Dietrich W Botstiber Foundation give general operating support?
Occasionally: 5% of The Dietrich W Botstiber Foundation's 2025 grants with a stated purpose (1 of 20) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are The Dietrich W Botstiber Foundation's largest grantees?
The Dietrich W Botstiber Foundation's largest 2025 grantees include Fidelity Donor Advised Fund ($615,000), Institute for International Education ($42,000) and Delaware Valley Science Fairs Inc ($35,000), according to its 2025 IRS Form 990-PF. It also paid 6 grants to individuals ($45,541), which are not listed by name. Together they received 84% of its itemized 2025 grant dollars.
How large is The Dietrich W Botstiber Foundation?
The Dietrich W Botstiber Foundation reported $51.9M in total assets on its 2025 IRS Form 990-PF. It paid out $1.8M in qualifying distributions that year, against a required minimum of $2.3M (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What does The Dietrich W Botstiber Foundation fund?
The foundation’s programs include the Botstiber Institute for Austrian-American Studies (BIAAS), the Botstiber Institute for Wildlife Fertility Control (BIWFC), and Botstiber Water Projects. See mission & focus areas ↑
How do I apply for a grant from The Dietrich W Botstiber Foundation?
BIWFC no longer accepts unsolicited proposals and says it will engage with organizations whose work aligns with its focus on systemic and interdisciplinary issues. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is The Dietrich W Botstiber Foundation's EIN?
The Dietrich W Botstiber Foundation's EIN (Employer Identification Number) is 23-7807828. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated October 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 June 30, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS June 26, 2026)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work The Dietrich W Botstiber Foundation funds
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Cite this profile
Grantable. (2026). The Dietrich W Botstiber Foundation funder profile. GrantGraph. Retrieved October 25, 2026, from https://grantable.co/funders/the-dietrich-w-botstiber-foundation-morg_eae9f899b35746f6afd5b282cf950928
BibTeX
@misc{grantable_237807828_2026,
author = {{Grantable}},
title = {{The Dietrich W Botstiber Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/the-dietrich-w-botstiber-foundation-morg_eae9f899b35746f6afd5b282cf950928},
note = {Accessed 2026-10-25. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from The Dietrich W Botstiber 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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