The Mary & Bob Sierra Family Foundation Inc is a private foundation based in Tampa, Florida, established in 1989. The foundation distributes grants to charitable organizations, with a focus on supporting nonprofits in Florida and surrounding regions.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
$23.1M
+2.8% YoY
Annual Giving
$1.4M
+11.9% YoY
Grant Count
78
+1.3% YoY
Avg Grant Size
$19K
+10.5% YoY
Mission & Focus Areas
The foundation provides grants exclusively to IRC Section 501(c)(3) organizations. Primary funding interests include:
- Education
- Human services
- Health
- Religious organizations
- Children and youth
- Animal welfare
- Philanthropy, voluntarism, and grantmaking
The foundation does not engage in direct charitable activities beyond distributing grants to qualified nonprofits.
Grantmaking
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Geographic Focus
Where this funder awards grants
The foundation primarily supports nonprofit organizations in Florida, with emphasis on the Tampa area. Grant-making also extends to North Carolina and Maryland.
Grant Distribution by State
States
Cities
Financial History
Multi-year comparison from IRS filings
- Total Assets: $23,132,453
- Total Annual Giving: $1,445,339
- Total Revenues: $2,274,087 (2025)
- Total Expenses: $1,636,709 (2025)
- Employees: 0
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | $23,132,453 | $22,495,075 | $22,157,568 |
| Revenue | $2,274,087 | $1,820,485 | $1,161,358 |
| Expenses | $1,636,709 | $1,482,978 | $1,139,824 |
| Qualifying Distributions | $1,539,554 | $1,404,237 | $1,075,291 |
| Net Investment Income | $1,113,270 | $810,740 | $1,019,856 |
| Distributable Amount | $1,437,463 | $1,519,973 | $1,394,562 |
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
Grant Size Distribution
250 grants across all recorded years
Giving History
Grant recipients and amounts by year
No grants recorded for .
Leadership & Key People
Leadership team and compensation from IRS filings
The trustees are J. Robert Sierra and Mary Sierra.
Compensation Overview
From 2025 IRS filing
From 2025 filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| J Robert Sierra | President | 1 | — |
| Michael Sierra | Vice President | 1 | — |
| Stuart Sierra | Secretary | 1 | — |
| John R Sierra Jr | Treasurer | 1 | — |
Contact Information
Address: 509 Guisando De Avila Ste 200, Tampa, FL 33613-5235
Telephone: 813-549-7707
EIN: 59-2846736
Subject Areas
Focus areas based on grantmaking activity
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Data last updated April 2026. Sourced from IRS Form 990-PF filings. Research dossier generated April 2026.
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