Louis H and Mary Patricia Stumberg
Louis H and Mary Patricia Stumberg is a private foundation based in San Antonio, Texas. Its 2025 filing reports grants to charitable organizations, with most grant dollars going to recipients in Texas.
Louis H and Mary Patricia Stumberg at a glance
In short: Louis H and Mary Patricia Stumberg gave $848K across 27 grants in 2025 (avg $31K), mostly in Texas. 30% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $847,500
- +9.6% vs 2024
- Grants made (2025)
- 27
- +17.4% vs 2024
- Average grant
- $31,389
- -6.6% vs 2024
- Median grant
- $25,000
- Total assets
- $15,713,458
- +14.8% vs 2024
- New grantees (estimate)
- 30% first-time grantees (8 of 27, 2025)
- Primary geography
- Texas (96% 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 Louis H and Mary Patricia Stumberg
- How to Apply
-
The filing directs applicants to contact Diana M. Stumberg and submit an application in letter form outlining the applicant’s needs. The filing states that awards have no restrictions or limitations.
- Review Cycle
- Applications should be submitted by December.
- Deadline
- Applications should be submitted by December.
- Contact
Application contact: Diana M Stumberg
Mailing address: 227 W Olmos Drive, San Antonio, TX 78212
Phone: (210) 271-0448
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Louis H and Mary Patricia Stumberg funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was The Witte ($100K). Together the top 10 received $575K.
Grant Size Distribution
97 grants across all recorded years
The most common grant size was under $50K: 76 grants of 97 (78%).
Geographic Focus
Where this funder awards grants
In 2025, 96% of grant dollars went to recipients in Texas, 3% to New York, and 1% to New Jersey. The listed Texas recipients include organizations in San Antonio and Kerrville.
Grant Distribution by State
Share of 2025 grant dollars across all 27 itemized grants.
States
Cities
Is Louis H and Mary Patricia Stumberg open to new grantees?
30%
first-time grantees, 2025
In 2025, 8 of 27 grantees (30%) were first-time recipients. First grants averaged $12K; repeat grants $40K. How we count
Medians: $10K first-time, $40K repeat.
- 63% of 2025 grantees were also funded in 2024. Method
- Giving grew 379% from 2022 to 2025. Method
- In 2025 it paid out 92% 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 $177K (2022) to $848K (2025). In 2025 it made 27 grants totaling $848K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| The Witte San Antonio, TX | Charitable | $100,000 |
| Trinity University San Antonio, TX | Charitable | $75,000 |
| The Congregational Collective San Antonio, TX | Charitable | $60,000 |
| Sunshine Cottage School for Deaf Children San Antonio, TX | Charitable | $50,000 |
| Laity Lodge Foundation Kerville, TX | Charitable | $50,000 |
| United Way of San Antonio San Antonio, TX | Charitable | $50,000 |
| Headwaters at Incarnate Word San Antonio, TX | Charitable | $50,000 |
| Brighton Center San Antonio, TX | Charitable | $50,000 |
| Yosa San Antonio, TX | Charitable | $50,000 |
| San Antonio Botanical Garden Society Inc San Antonio, TX | Charitable | $40,000 |
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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 | $15,713,458 | $3,025,050 | $1,005,305 | $847,500 | 27 | $860,237 | $1,789,841 | $931,822 |
| 2024 | $13,692,145 | $4,152,587 | $919,303 | $773,106 | 23 | $712,019 | $4,057,214 | $824,298 |
| 2023 | $10,458,861 | $1,102,801 | $705,405 | $572,934 | 20 | $582,651 | $1,021,999 | $738,746 |
| 2022 | $10,061,465 | $1,800,677 | $271,690 | $177,000 | 12 | $186,574 | $1,721,696 | $715,052 |
| 2021 | $8,532,478 | $590,868 | $728,813 | $622,667 | 15 | $632,343 | $504,988 | $792,409 |
| 2020 | $8,670,423 | $637,513 | $79,390 | — | — | — | $568,475 | $637,576 |
| 2019 | $8,112,593 | $3,223,668 | $407,898 | $322,167 | 15 | — | $316,143 | $587,956 |
Under IRS private-foundation payout rules, Louis H and Mary Patricia Stumberg reported a distributable amount of $932K 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 grantees include organizations working in areas such as arts and culture, education, services for children with disabilities, grief support, and environmental education. For example, the San Antonio Botanical Garden Society describes its mission as “enriching lives through plants and nature,” while Brighton Center says it provides education and development services to children with disabilities or delays. Sunshine Cottage School for Deaf Children says it supports children who are deaf or hard of hearing through early identification, intervention, listening, spoken language, and literacy.
Grantmaking
In 2025, the foundation made 27 grants totaling $847,500. Grants ranged from $5,000 to $100,000, with a median of $25,000. The largest awards included $100,000 to The Witte and $75,000 to Trinity University, both in San Antonio. Other grants included $60,000 to The Congregational Collective and $50,000 each to Sunshine Cottage School for Deaf Children, Laity Lodge Foundation, United Way of San Antonio, Headwaters at Incarnate Word, Brighton Center, and YOSA.
The foundation also reported grants in 2024 to organizations whose stated missions span several areas. These included $50,000 to Brighton Center, $40,000 to the San Antonio Botanical Garden Society, $30,000 to Laity Lodge Foundation, and $25,000 each to Presbyterian Children’s Home and Children’s Bereavement Center.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Mary Pat Stumberg, Louis H. Stumberg Jr., Diana M. Stumberg, and Eric B. Stumberg as trustees.
Louis H and Mary Patricia Stumberg's 2025 filing lists 4 officers; none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
Diana M. Stumberg
Trustee
On filings since 2019
1 hr/week
No compensation reported
Eric B. Stumberg
Trustee
On filings since 2019
1 hr/week
No compensation reported
Louis H. Stumberg Jr.
Trustee
On filings since 2019
1 hr/week
No compensation reported
Mary Pat Stumberg
Trustee
On filings since 2019
1 hr/week
No compensation reported
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.
Frequently asked questions about Louis H and Mary Patricia Stumberg
How much does Louis H and Mary Patricia Stumberg give each year?
Louis H and Mary Patricia Stumberg gave $848K across 27 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $773K across 23 grants.
What is Louis H and Mary Patricia Stumberg's typical grant size?
Louis H and Mary Patricia Stumberg's median grant in 2025 was $25,000, and its average grant was $31,389, across 27 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Louis H and Mary Patricia Stumberg that year got $12K on average.
Where does Louis H and Mary Patricia Stumberg give grants?
Louis H and Mary Patricia Stumberg gives mostly in Texas: 96% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were San Antonio, TX (21 grants).
Does Louis H and Mary Patricia Stumberg give general operating support?
Not in 2025: none of the 27 grants with a stated purpose on Louis H and Mary Patricia Stumberg's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Charitable" (27 grants).
Who are Louis H and Mary Patricia Stumberg's largest grantees?
Louis H and Mary Patricia Stumberg's largest 2025 grantees include The Witte ($100,000), Trinity University ($75,000) and The Congregational Collective ($60,000), according to its 2025 IRS Form 990-PF. Together they received 28% of its itemized 2025 grant dollars.
How large is Louis H and Mary Patricia Stumberg?
Louis H and Mary Patricia Stumberg reported $15.7M in total assets on its 2025 IRS Form 990-PF. It paid out $860K in qualifying distributions that year, against a required minimum of $932K (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 Louis H and Mary Patricia Stumberg fund?
No mission statement for the foundation is provided. Its grantees include organizations working in areas such as arts and culture, education, services for children with disabilities, grief support, and environmental education. See mission & focus areas ↑
How do I apply for a grant from Louis H and Mary Patricia Stumberg?
The filing directs applicants to contact Diana M. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Louis H and Mary Patricia Stumberg's EIN?
Louis H and Mary Patricia Stumberg's EIN (Employer Identification Number) is 74-6367261. 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 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 4, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 13, 2026)
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
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Cite this profile
Grantable. (2026). Louis H and Mary Patricia Stumberg funder profile. GrantGraph. Retrieved October 8, 2026, from https://grantable.co/funders/louis-h-and-mary-patricia-stumberg-morg_6c7313ceb8384a5c9a92f4250cc65c54
BibTeX
@misc{grantable_746367261_2026,
author = {{Grantable}},
title = {{Louis H and Mary Patricia Stumberg funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/louis-h-and-mary-patricia-stumberg-morg_6c7313ceb8384a5c9a92f4250cc65c54},
note = {Accessed 2026-10-08. 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 Louis H and Mary Patricia Stumberg'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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