William B Dietrich Foundation
The William B Dietrich Foundation is a private foundation based in Philadelphia, Pennsylvania. Its 2024 filing reports grants to organizations in Pennsylvania for projects including historic-site restoration, museum and garden improvements, and organizational purposes.
William B Dietrich Foundation at a glance
In short: William B Dietrich Foundation gave $3.2M across 10 grants in 2024 (avg $317K), mostly in Pennsylvania. 60% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $3,169,700
- -0.8% vs 2023
- Grants made (2024)
- 10
- +11.1% vs 2023
- Average grant
- $316,970
- -10.8% vs 2023
- Median grant
- $262,500
- Total assets
- $72,653,224
- +6.2% vs 2023
- New grantees (estimate)
- 60% first-time grantees (6 of 10, 2024; small sample)
- Primary geography
- Pennsylvania (100% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to William B Dietrich Foundation
- How to Apply
-
The filing describes written applications with the organization’s details and intended use of funds, accompanied by the specified IRS determination letter.
- Contact
Application contact: Frank G Cooper President
Mailing address: PO Box 58177, Philadelphia, PA 19102-8177
Phone: (215) 979-1000
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who William B Dietrich Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Friends of Laurel Hill & West Laurel Hill Cemeteries ($1.2M). Together the top 10 received $3.2M.
Grant Size Distribution
51 grants across all recorded years
The most common grant size was under $50K: 16 grants of 51 (31%).
Geographic Focus
Where this funder awards grants
All grant dollars reported for 2024 went to recipients in Pennsylvania. The listed 2024 recipients include organizations in Philadelphia and surrounding Pennsylvania communities.
Grant Distribution by State
Share of 2024 grant dollars across all 10 itemized grants.
States
Cities
Is William B Dietrich Foundation open to new grantees?
60%
first-time grantees, 2024
In 2024, 6 of 10 grantees (60%) were first-time recipients. With only 10 grantees, that is a small sample: one grantee more or less moves the share by about 10 points. First grants averaged $471K; repeat grants $86K. How we count
Medians: $335K first-time, $32K repeat.
- 30% of 2024 grantees were also funded in 2023. Method
- Giving held roughly steady from 2021 to 2024 (−6%). Method
- In 2024 it paid out 84% 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 (2020–2024). 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 2020 to 2024, annual grant giving ranged from $2.7M (2022) to $3.4M (2021). In 2024 it made 10 grants totaling $3.2M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Friends of Laurel Hill & West Laurel Hill Cemeteries Philadelphia, PA | Restoration of Gatehouse | $1,160,000 |
| The Franklin Institute Philadelphia, PA | Hamilton Collections Gallery | $500,000 |
| Morris Arboretum of the University of Pennsylvania Philadelphia, PA | Renovation & Repair of the Step Fountain | $340,000 |
| Philadelphia Society for the Preservation of Landmarks Philadelphia, PA | Grumblethorpe Historic Tenant House Restoration Projecti | $330,000 |
| Williamson College of the Trades Media, PA | Doors & windows for exterior restoration of derrickson cottage | $270,000 |
| Township of Lower Merion Ardmore, PA | General Purposes | $255,000 |
| US Squash Racquets Association Inc Philadelphia, PA | Design, construction & development of a new reception area at the armory | $240,000 |
| Saint Mark's Church Philadelphia, PA | Masonry work & exterior lighting of the lady chapel | $54,700 |
| New Horizons Senior Center Narberth, PA | General Purposes | $10,000 |
| Surrey Services for Seniors Berwyn, PA | General Operations | $10,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $72,653,224 | $8,194,899 | $3,934,034 | $3,169,700 | 10 | $3,493,453 | $4,287,140 | $4,153,649 |
| 2023 | $68,392,359 | $8,296,124 | $3,901,087 | $3,196,481 | 9 | $3,486,410 | $4,434,602 | $3,586,775 |
| 2022 | $64,000,706 | $7,801,842 | $3,417,426 | $2,714,600 | 12 | $3,016,737 | $3,951,373 | $3,424,892 |
| 2021 | $59,619,260 | $9,006,760 | $4,100,218 | $3,373,100 | 9 | $3,687,799 | $5,137,361 | $3,736,118 |
| 2020 | $54,984,018 | $4,826,073 | $3,467,765 | $2,895,428 | 11 | — | $1,075,874 | $3,061,464 |
Under IRS private-foundation payout rules, William B Dietrich Foundation reported a distributable amount of $4.2M for 2024 — 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 own mission is not stated in the available information. Its 2024 grants included preservation and restoration work, cultural and educational projects, and general-purpose support. The Franklin Institute describes its mission as inspiring a passion for learning about science and technology. The Philadelphia Society for the Preservation of Landmarks says it preserves historic sites and offers historical, educational, and cultural programming. Williamson College of the Trades says it prepares young men to be leaders and productive members of society.
Grantmaking
In 2024, the foundation reported 10 grants totaling $3,169,700. Grants ranged from $10,000 to $1,160,000, with a median grant of $262,500. The largest grants included $1,160,000 to Friends of Laurel Hill & West Laurel Hill Cemeteries for gatehouse restoration; $500,000 to The Franklin Institute for the Hamilton Collections Gallery; $340,000 to Morris Arboretum of the University of Pennsylvania for renovation and repair of the Step Fountain; and $330,000 to the Philadelphia Society for the Preservation of Landmarks for a historic tenant-house restoration project.
The filing says the foundation does not restrict giving to preselected organizations. It instructs applicants to write to Frank G Cooper, outlining the organization and intended use of funds, and to include a copy of the IRS letter of determination of charitable status indicating that the recipient is not a private foundation. The filing lists no deadlines or restrictions on awards.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Frank G Cooper Esq as president, treasurer, and assistant, and John J Soroko Esq as secretary and assistant treasurer.
William B Dietrich Foundation is led by Frank G. Cooper Esq., President, Treasurer & Ass on every filing since 2020; all 2 officers listed in 2024 are compensated.
Officers on the 2024 filing
Frank G. Cooper Esq.
President, Treasurer & Ass
On filings since 2020
5 hrs/week
$140K (2020) → $184K (2024)
John J. Soroko Esq.
Secretary & Assistant Treasurer
On filings since 2020
5 hrs/week
$140K (2020) → $184K (2024)
Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2024 IRS filing
The highest reported compensation on the 2024 filing was $184K, to Frank G Cooper ESQ (President, Treasurer & Ass). 2 officers or directors reported compensation on that filing.
Frequently asked questions about William B Dietrich Foundation
How much does William B Dietrich Foundation give each year?
William B Dietrich Foundation gave $3.2M across 10 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $3.2M across 9 grants.
What is William B Dietrich Foundation's typical grant size?
William B Dietrich Foundation's median grant in 2024 was $262,500, and its average grant was $316,970, across 10 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from William B Dietrich Foundation that year got $471K on average.
Where does William B Dietrich Foundation give grants?
William B Dietrich Foundation gives mostly in Pennsylvania: 100% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Philadelphia, PA (6 grants).
Does William B Dietrich Foundation give general operating support?
Yes: 30% of William B Dietrich Foundation's 2024 grants with a stated purpose (3 of 10) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are William B Dietrich Foundation's largest grantees?
William B Dietrich Foundation's largest 2024 grantees include Friends of Laurel Hill & West Laurel Hill Cemeteries ($1,160,000), The Franklin Institute ($500,000) and Morris Arboretum of the University of Pennsylvania ($340,000), according to its 2024 IRS Form 990-PF. Together they received 63% of its itemized 2024 grant dollars.
How large is William B Dietrich Foundation?
William B Dietrich Foundation reported $72.7M in total assets on its 2024 IRS Form 990-PF. It paid out $3.5M in qualifying distributions that year, against a required minimum of $4.2M (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 William B Dietrich Foundation fund?
The foundation’s own mission is not stated in the available information. Its 2024 grants included preservation and restoration work, cultural and educational projects, and general-purpose support. See mission & focus areas ↑
How do I apply for a grant from William B Dietrich Foundation?
The filing describes written applications with the organization’s details and intended use of funds, accompanied by the specified IRS determination letter. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is William B Dietrich Foundation's EIN?
William B Dietrich Foundation's EIN (Employer Identification Number) is 90-0628306. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated October 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
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Cite this profile
Grantable. (2026). William B Dietrich Foundation funder profile. GrantGraph. Retrieved October 15, 2026, from https://grantable.co/funders/william-b-dietrich-foundation-morg_fa231638e09b4564a14c825a4950bd6e
BibTeX
@misc{grantable_900628306_2026,
author = {{Grantable}},
title = {{William B Dietrich Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/william-b-dietrich-foundation-morg_fa231638e09b4564a14c825a4950bd6e},
note = {Accessed 2026-10-15. 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 William B Dietrich 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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