Mason Ave Family Foundation
Mason Ave Family Foundation is a private foundation based in Webster Groves, Missouri. In 2025, it gave grants to charitable organizations, with the listed grant purposes identified as “fund of need.”
Key facts about Mason Ave Family Foundation
In short: Mason Ave Family Foundation gave $1.1M across 15 grants in 2025 (avg $73K), mostly in Missouri. 47% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- EIN
- 37-6634026
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $1,101,760
- Grants made (2025)
- 15
- Average grant
- $73,451
- Median grant
- $50,000
- New grantees (estimate)
- 47% first-time grantees (7 of 15, 2025)
- Total assets
- $18,373,766
- Primary geography
- Missouri (90% of itemized 2025 grant dollars)
- Accepts unsolicited proposals
- No
- How to apply
- The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Full details ↓
Data from IRS Form 990-PF, 2025; updated September 2026. New grantees are estimated by matching recipient names across years (methodology). Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$18.4M
+1.8% YoY
Annual Giving
$1.1M
+18.2% YoY
Grant Count
15
-25.0% YoY
Avg Grant Size
$73K
+57.6% YoY
Under IRS private-foundation payout rules, Mason Ave Family Foundation reported a distributable amount of $1.1M for 2025 — the minimum it must pay out in qualifying distributions.
Is Mason Ave Family Foundation open to new grantees?
47%
first-time grantees, 2025
In 2025, 7 of 15 grantees (47%) were first-time recipients. First grants averaged $56K; repeat grants $88K. How we count
Medians: $50K first-time, $57K repeat.
- 47% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (+6%). Method
- In 2025 it paid out 98% 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 (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Mission & Focus Areas
No foundation mission statement is provided. Its 2025 grants went to organizations including St. Louis University High School, Operation Food Search, Journeys of Hope, Friends of the Forgotten, and YouthBridge Community Foundation; each of the listed grants was designated “fund of need.”
The grantees describe their own work in varied terms. YouthBridge Community Foundation says it partners with donors to help charities in the St. Louis region, especially those focused on children, through leadership, grants, and donor services. Operation Food Search says it works to heal hunger with collaborative solutions that provide food and help create a hunger-free tomorrow. The Chief Mason Griffith Foundation says it supports former, retired, and fallen first responders, assists current first responders in times of crisis, and offers scholarships for people seeking to become first responders.
Grantmaking
In filing year 2025, the foundation awarded 15 grants totaling $1,101,760. Awards ranged from $7,796 to $315,000, with a median of $50,000.
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Geographic Focus
Where this funder awards grants
In 2025, the foundation reported that 90% of grant dollars went to recipients in Missouri, 6% to North Carolina, and 5% to Massachusetts.
Grant Distribution by State
Share of 2025 grant dollars across all 15 itemized grants.
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2025, annual grant giving ranged from $900K (2020) to $1.1M (2025). In 2025 it made 15 grants totaling $1.1M.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was St Louis University High School ($315K). Together the top 10 received $979K.
Grant Size Distribution
81 grants across all recorded years
The most common grant size was under $50K: 41 grants of 81 (51%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| St Louis University High School Saint Louis, MO | Fund of Need | $315,000 |
| Operation Food Search Saint Louis, MO | Fund of Need | $100,000 |
| Journeys of Hope Saint Louis, MO | Fund of Need | $100,000 |
| Friends of the Forgotten Lebanon, MO | Fund of Need | $100,000 |
| Youthbridge Community Foundation Saint Louis, MO | Fund of Need | $100,000 |
| Ambassadors of Father's House Matthews, NC | Fund of Need | $63,964 |
| St Vincent De Paul Saint Louis, MO | Fund of Need | $50,000 |
| The Chief Mason Griffith Foundation Inc Rosebud, MO | Fund of Need | $50,000 |
| Hope Ignites St Loius - Boys Hope Girls Hope Richmond Heights, MO | Fund of Need | $50,000 |
| Babson Rugby Development Inc Marshfield, MA | Fund of Need | $50,000 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Assets | Revenue | Expenses | Grant total | Grant count |
|---|---|---|---|---|---|
| 2025 | $18,373,766 | $1,531,369 | $1,255,812 | $1,101,760 | 15 |
| 2024 | $18,049,597 | $1,344,012 | $1,046,551 | $932,045 | 20 |
| 2023 | $17,754,431 | $774,280 | $1,105,597 | $996,741 | 17 |
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $18,373,766 | $18,049,597 | $17,754,431 |
| Revenue | $1,531,369 | $1,344,012 | $774,280 |
| Expenses | $1,255,812 | $1,046,551 | $1,105,597 |
| Qualifying Distributions | $1,101,760 | $932,045 | $996,741 |
| Net Investment Income | $1,411,767 | $1,231,709 | $671,424 |
| Distributable Amount | $1,124,564 | $1,069,778 | $964,027 |
Data update history
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS July 17, 2026)
- IRS filings on file for fiscal years 2020–2024
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Leonard S Dino Jr, Carrie N Dino, and David Byrne as trustees.
Mason Ave Family Foundation's 2025 filing lists 3 officers; none of the 3 officers listed in 2025 report compensation.
Officers on the 2025 filing
Carrie N. Dino
Trustee
On filings since 2020
2.5 hrs/week
No compensation reported
David Byrne
Trustee
On filings since 2020
2.5 hrs/week
No compensation reported
Leonard S. Dino Jr.
Trustee
On filings since 2020
2.5 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Contact
Mailing address: 21 Mason Avenue, Webster Groves, MO 63119
Phone: (314) 889-1100
Frequently asked questions about Mason Ave Family Foundation
How much does Mason Ave Family Foundation give each year?
Mason Ave Family Foundation gave $1.1M across 15 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $932K across 20 grants.
What is Mason Ave Family Foundation's typical grant size?
Mason Ave Family Foundation's median grant in 2025 was $50,000, and its average grant was $73,451, across 15 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Mason Ave Family Foundation that year got $56K on average.
Where does Mason Ave Family Foundation give grants?
Mason Ave Family Foundation gives mostly in Missouri: 90% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest state was North Carolina (6%). The most frequent recipient cities were Saint Louis, MO (10 grants).
Does Mason Ave Family Foundation give general operating support?
Not in 2025: none of the 15 grants with a stated purpose on Mason Ave Family Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Fund of Need" (15 grants).
Who are Mason Ave Family Foundation's largest grantees?
Mason Ave Family Foundation's largest 2025 grantees include St Louis University High School ($315,000), Operation Food Search ($100,000) and Journeys of Hope ($100,000), according to its 2025 IRS Form 990-PF. Together they received 47% of its itemized 2025 grant dollars.
How large is Mason Ave Family Foundation?
Mason Ave Family Foundation reported $18.4M in total assets on its 2025 IRS Form 990-PF. It paid out $1.1M in qualifying distributions that year, against a required minimum of $1.1M (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 Mason Ave Family Foundation fund?
No foundation mission statement is provided. Its 2025 grants went to organizations including St. Louis University High School, Operation Food Search, Journeys of Hope, Friends of the Forgotten, and YouthBridge Community Foundation; each of the listed grants was designated “fund of need.” See mission & focus areas ↑
How do I apply for a grant from Mason Ave Family Foundation?
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Mason Ave Family Foundation's EIN?
Mason Ave Family Foundation's EIN (Employer Identification Number) is 37-6634026. IRS Form 990 filing data is available on this page for 2020–2025.
Does Mason Ave Family Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated September 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
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