Sonntag Family Foundation (The)
The Sonntag Family Foundation (The) is a private foundation based in Phoenix, Arizona. It made 12 charitable grants totaling $158,750 in filing year 2025, supporting organizations in Arizona, California, and New York.
Sonntag Family Foundation (The) at a glance
In short: Sonntag Family Foundation (The) gave $159K across 12 grants in 2025 (avg $13K), mostly in Arizona. 58% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $158,750
- -2.5% vs 2024
- Grants made (2025)
- 12
- +50.0% vs 2024
- Average grant
- $13,229
- -35.0% vs 2024
- Median grant
- $10,000
- Total assets
- $2,271,014
- -4.5% vs 2024
- New grantees (estimate)
- 58% first-time grantees (7 of 12, 2025; small sample)
- Primary geography
- Arizona (62% 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 Sonntag Family Foundation (The)
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation does not accept unsolicited requests for funds; it makes contributions only to preselected charitable organizations.
- Contact
Mailing address: 5202 E Exeter Blvd, Phoenix, AZ 85018
Phone: (602) 549-7964
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Sonntag Family Foundation (The) funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Sun Devil Athletics ($44K). Together the top 10 received $156K.
Grant Size Distribution
41 grants across all recorded years
The most common grant size was under $50K: 39 grants of 41 (95%).
Geographic Focus
Where this funder awards grants
In 2025, 62% of grant dollars went to recipients in Arizona, 25% to California, and 13% to New York.
Grant Distribution by State
Share of 2025 grant dollars across all 12 itemized grants.
Cities
Is Sonntag Family Foundation (The) open to new grantees?
58%
first-time grantees, 2025
In 2025, 7 of 12 grantees (58%) were first-time recipients. With only 12 grantees, that is a small sample: one grantee more or less moves the share by about 8 points. First grants averaged $18K; repeat grants $7K. How we count
Medians: $17K first-time, $2K repeat.
- 42% of 2025 grantees were also funded in 2024. Method
- Giving grew 145% from 2022 to 2025. Method
- In 2025 it paid out 109% of its IRS minimum distribution (the 5% rule). 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 $22K (2021) to $290K (2019). In 2025 it made 12 grants totaling $159K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Sun Devil Athletics Tempe, AZ | Charitable Contribution | $44,250 |
| Womens Board of Barrow Neurological Foundation Phoenix, AZ | Charitable Contribution | $25,000 |
| National Resources Defense Council New York, NY | Charitable Contribution | $20,000 |
| San Diego Food Bank San Diego, CA | Charitable Contribution | $20,000 |
| Arcs Foundation Phoenix Chapter Phoenix, AZ | Charitable Contribution | $17,000 |
| St Anne Catholic School Laguna Niguel, CA | Charitable Contribution | $10,000 |
| Jserra Catholic School San Juan Capistrano, CA | Charitable Contribution | $10,000 |
| Rosie's House Music Academy for Children Phoenix, AZ | Charitable Contribution | $5,000 |
| ASU Foundation Tempe, AZ | Charitable Contribution | $2,500 |
| Season for Sharing Phoenix, AZ | Charitable Contribution | $2,000 |
Ready to take the next step with Sonntag Family Foundation (The)?
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 | $2,271,014 | $70,177 | $178,014 | $158,750 | 12 | $159,950 | $54,611 | $147,054 |
| 2024 | $2,378,851 | $126,763 | $187,046 | $162,750 | 8 | $163,375 | $37,892 | $194,279 |
| 2023 | $2,439,134 | $82,881 | $103,050 | $76,000 | 7 | $76,000 | $41,991 | $124,361 |
| 2022 | $2,459,303 | $212,243 | $96,290 | $64,750 | 7 | $64,750 | $73,773 | $119,729 |
| 2021 | $2,343,350 | $693,115 | $49,044 | $22,250 | 7 | $22,250 | $280,705 | $108,766 |
| 2020 | $1,864,344 | $140,702 | $47,688 | $29,000 | 7 | — | $122,683 | $85,839 |
| 2019 | $1,771,330 | $137,703 | $311,625 | $289,720 | 9 | — | $48,052 | $93,678 |
Under IRS private-foundation payout rules, Sonntag Family Foundation (The) reported a distributable amount of $147K for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Grantmaking
In filing year 2025, the foundation awarded 12 grants totaling $158,750. Grants ranged from $1,000 to $44,250, with a median of $10,000. Its largest grants included $44,250 to Sun Devil Athletics, $25,000 to Women’s Board of Barrow Neurological Foundation, $20,000 to the National Resources Defense Council, $20,000 to San Diego Food Bank, and $17,000 to ARCS Foundation Phoenix Chapter. Each grant was listed as a charitable contribution.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Volker Sonntag as president and Lynne Sonntag as secretary/treasurer.
Sonntag Family Foundation (The) is led by Volker Sonntag, President on every filing since 2019; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Volker Sonntag
President
On filings since 2019
1 hr/week
No compensation reported
Lynne Sonntag
Secretary & Treasurer
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 Sonntag Family Foundation (The)
How much does Sonntag Family Foundation (The) give each year?
Sonntag Family Foundation (The) gave $159K across 12 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $163K across 8 grants.
What is Sonntag Family Foundation (The)'s typical grant size?
Sonntag Family Foundation (The)'s median grant in 2025 was $10,000, and its average grant was $13,229, across 12 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Sonntag Family Foundation (The) that year got $18K on average.
Where does Sonntag Family Foundation (The) give grants?
Sonntag Family Foundation (The) gives mostly in Arizona: 62% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were California (25%) and New York (13%). The most frequent recipient cities were Phoenix, AZ (6 grants) and Tempe, AZ (2 grants).
Who are Sonntag Family Foundation (The)'s largest grantees?
Sonntag Family Foundation (The)'s largest 2025 grantees include Sun Devil Athletics ($44,250), Womens Board of Barrow Neurological Foundation ($25,000) and National Resources Defense Council ($20,000), according to its 2025 IRS Form 990-PF. Together they received 56% of its itemized 2025 grant dollars.
How large is Sonntag Family Foundation (The)?
Sonntag Family Foundation (The) reported $2.3M in total assets on its 2025 IRS Form 990-PF. It paid out $160K in qualifying distributions that year, against a required minimum of $147K (roughly 5% of its investment assets).
How do I apply for a grant from Sonntag Family Foundation (The)?
The foundation does not accept unsolicited requests for funds; it makes contributions only to preselected charitable organizations. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Sonntag Family Foundation (The)'s EIN?
Sonntag Family Foundation (The)'s EIN (Employer Identification Number) is 26-2876575. IRS Form 990 filing data is available on this page for 2019–2025.
Does Sonntag Family Foundation (The) 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
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2024 (received by the IRS November 6, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS May 12, 2026)
- Added Form 990-PF for fiscal year 2019 (received by the IRS June 15, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS April 30, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 4, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 3, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 9, 2024)
Live grants for the work Sonntag Family Foundation (The) funds
Philanthropy, Voluntarism & Grantmaking Open opportunities, soonest deadline first.
- Nixa Affiliate Grantmaking Program Up to US $10,000 · Due October 19, 2026
- Community and School Grants $28,000 total pool; 10-15 grants expected · Due October 19, 2026
- Mary Pinola/Crescenta Valley Chamber Education Fund $500 - $5,000 for ongoing programs; up to $15,000 for Strategic Initiative Grants · Due October 19, 2026
Explore Open Grants
Browse active grant opportunities in Sonntag Family Foundation (The)'s focus areas in our free grants database
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