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Arizona · Private foundation

Sonntag Family Foundation (The)

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$159k
Granted FY2025(still arriving)
12
Grants FY2025
8
Organizations funded FY2024
38%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$10,000
Largest grant, FY2025
$44,250
Organizations funded a year
7 to 9
FY2018 to FY2024
States reached, FY2025
3
Total assets, FY2025
$2.3M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 38% of the organizations Sonntag Family Foundation (The) funded were first-time grantees, receiving 77% of its grant dollars.

New vs renewed · share of each year

In FY2024, 23% of grant dollars renewed an existing relationship; $125k went to new ones.

50%100%’18’19’20’21’22’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’22’23’24
EducationHealthHousing & ShelterHuman ServicesOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving12$159k58%
FY20248$163k38%
FY20237$76k0%
FY20227$65k14%
FY20217$22k29%
FY20207$29k14%
FY20199$290k33%
FY20189$68k33%
78% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Health$408kPhilanthropy$177kEducation$113kRecreation & Sports$42kFood & Nutrition$41kEnvironment$20kHousing & Shelter$11kArts & Culture$5kOther$0

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Barrow Neurological Foundation$350,22041%
Charitable Gift America Inc$100,00011%
Arizona State University Foundation for a New American University$52,75040%
University of Arizona Foundation$30,00010%
St Mary's Food Bank Alliance$21,00090%
Jacobs & Cushman San Diego Food Bank$20,00010%
Natural Resources Defense Council Inc$20,00010%
Rosies House A Music Academy for Children Inc$11,00030%
Xavier College Preparatory Roman Catholic High School Phoenix$9,0009n/a
St Josephs Hospital and Medical Center$5,4531n/a
Show all 13 grantees
All grantees of Sonntag Family Foundation (The) by total granted
GranteeTotal grantedYearsShare of their budget
Barrow Neurological Foundation$350,22041%
Charitable Gift America Inc$100,00011%
Arizona State University Foundation for a New American University$52,75040%
University of Arizona Foundation$30,00010%
St Mary's Food Bank Alliance$21,00090%
Jacobs & Cushman San Diego Food Bank$20,00010%
Natural Resources Defense Council Inc$20,00010%
Rosies House A Music Academy for Children Inc$11,00030%
Xavier College Preparatory Roman Catholic High School Phoenix$9,0009n/a
St Josephs Hospital and Medical Center$5,4531n/a
St Joseph's Foundation$5,00010%
Laguna Niguel Military Support Foundation$2,00022%
National Kidney Foundation of Arizona$1,00010%

Plus 15 recipients with no EIN on record ($271k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget Sonntag Family Foundation (The) supplied at peak.

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetBarrow Neurological Foundation: $350,220 over 4y, 0.9% of budgetCharitable Gift America Inc: $100,000 over 1y, 0.9% of budgetArizona State University Foundation for a New American University: $52,750 over 4y, 0.0% of budgetUniversity of Arizona Foundation: $30,000 over 1y, 0.0% of budgetSt Mary's Food Bank Alliance: $21,000 over 9y, 0.0% of budgetJacobs & Cushman San Diego Food Bank: $20,000 over 1y, 0.0% of budgetNatural Resources Defense Council Inc: $20,000 over 1y, 0.0% of budgetRosies House A Music Academy for Children Inc: $11,000 over 3y, 0.3% of budgetSt Joseph's Foundation: $5,000 over 1y, 0.0% of budgetLaguna Niguel Military Support Foundation: $2,000 over 2y, 1.5% of budgetNational Kidney Foundation of Arizona: $1,000 over 1y, 0.0% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 11.

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

American Express FoundationNY15× affinity5 shared granteesties to 6 of 6Hover any node to trace its alignments.Compare side by side →

Open a dossier: American Express Foundation · Arizona Community Foundation · National Philanthropic Trust · Donor Advised Charitable Giving Inc · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare Sonntag Family Foundation (The) with peer funders

About Sonntag Family Foundation (The)

How much does Sonntag Family Foundation (The) give?
Sonntag Family Foundation (The) reported 12 grants totaling $158,750 in its FY2025 IRS filing. It funded between 7 and 9 organizations a year over FY2018 to FY2024.
What does Sonntag Family Foundation (The) fund?
By grant dollars over FY2017 to FY2025, its largest causes are Health (45%), Philanthropy (20%), Education (13%).
Who are Sonntag Family Foundation (The)'s largest grantees?
By total granted over FY2017 to FY2025: Barrow Neurological Foundation ($350k), Charitable Gift America Inc ($100k), Arizona State University Foundation for a New American University ($53k).
Does Sonntag Family Foundation (The) fund new organizations?
In FY2024, 38% of the organizations it funded were first-time grantees.
Does Sonntag Family Foundation (The) accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as Sonntag Family Foundation (The)?
Its strongest co-funders, measured against what their size predicts, include American Express Foundation, Arizona Community Foundation, National Philanthropic Trust.
Where is Sonntag Family Foundation (The) based?
Sonntag Family Foundation (The) is based in AZ.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 28 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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