Mary & Bob Sierra Family Foundation Inc
Mary & Bob Sierra Family Foundation Inc is a private foundation based in Tampa, Florida. It provides grants to organizations recognized under IRC Section 501(c)(3); its filing states that it conducts no direct charitable activities beyond distributing grants.
Mary & Bob Sierra Family Foundation Inc at a glance
In short: Mary & Bob Sierra Family Foundation Inc gave $1.4M across 78 grants in 2025 (avg $19K), mostly in Florida. 23% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $1,445,339
- +11.9% vs 2024
- Grants made (2025)
- 78
- +1.3% vs 2024
- Average grant
- $18,530
- +10.5% vs 2024
- Median grant
- $3,650
- Total assets
- $23,132,453
- +2.8% vs 2024
- New grantees (estimate)
- 23% first-time grantees (18 of 78, 2025)
- Primary geography
- Florida (97% 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 Mary & Bob Sierra Family Foundation Inc
- How to Apply
-
The 2024 filing says there is no specific application form, no submission deadline, and that the requesting entity must be a 501(c)(3) charity. It lists Frank Oliveras as the contact.
- Contact
Application contact: Frank Oliveras
Mailing address: 509 Guisando De Avila Suite 200, Tampa, FL 33613
Phone: (813) 549-7711
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Mary & Bob Sierra Family Foundation Inc funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was Hillsborough Education Foundation ($196K). Together the top 10 received $1.0M.
Grant Size Distribution
330 grants across all recorded years
The most common grant size was under $50K: 308 grants of 330 (93%).
Geographic Focus
Where this funder awards grants
The 2025 filing reports that 97% of grant dollars went to Florida recipients and 2% to North Carolina recipients. New York, Texas, and Maryland each account for less than 1% in the reported state breakdown.
Grant Distribution by State
Share of 2025 grant dollars across all 78 itemized grants.
States
Cities
Is Mary & Bob Sierra Family Foundation Inc open to new grantees?
23%
first-time grantees, 2025
In 2025, 18 of 78 grantees (23%) were first-time recipients. First grants averaged $6K; repeat grants $22K. How we count
Medians: $2K first-time, $5K repeat.
- 72% of 2025 grantees were also funded in 2024. Method
- Giving grew 147% from 2022 to 2025. Method
- In 2025 it paid out 107% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2021–2025). 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 2021 to 2025, annual grant giving ranged from $500K (2021) to $1.4M (2025). In 2025 it made 78 grants totaling $1.4M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Hillsborough Education Foundation Tampa, FL | To provide funds for general operating needs of organization. | $196,400 |
| Pasco Education Foundation Inc Land OLakes, FL | To provide funds for general operating needs of organization. | $195,900 |
| Hernando County Education Foundation Inc Brooksville, FL | To provide funds for general operating needs of organization. | $159,989 |
| Tampa Metropolitan Area YMCA Tampa, FL | To provide funds for general operating needs of organization. | $145,000 |
| St Joseph's Hospitals Foundation Tampa, FL | To provide funds for general operating needs of organization. | $105,000 |
| First Tee Tampa, FL | To provide funds for general operating needs of organization. | $51,000 |
| Academy Prep Center of Tampa Tampa, FL | To provide funds for general operating needs of organization. | $49,550 |
| Children's Advocacy Center of Hernando City Brooksville, FL | To provide funds for general operating needs of organization. | $46,250 |
| Bob Sierra YMCA Misc Operations Tampa, FL | To provide funds for general operating needs of organization. | $40,000 |
| End 68 Hours of Hunger Tampa, FL | To provide funds for general operating needs of organization. | $35,000 |
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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 | $23,132,453 | $2,274,087 | $1,636,709 | $1,445,339 | 78 | $1,539,554 | $1,113,270 | $1,437,463 |
| 2024 | $22,495,075 | $1,820,485 | $1,482,978 | $1,291,132 | 77 | $1,404,237 | $810,740 | $1,519,973 |
| 2023 | $22,157,568 | $1,161,358 | $1,139,824 | $975,790 | 63 | $1,075,291 | $1,019,856 | $1,394,562 |
| 2022 | $22,135,692 | $14,511,125 | $782,579 | $586,050 | 56 | $712,534 | $358,678 | $1,021,092 |
| 2021 | $8,402,644 | $1,083,820 | $584,638 | $499,837 | 56 | — | $1,025,026 | $602,667 |
Under IRS private-foundation payout rules, Mary & Bob Sierra Family Foundation Inc reported a distributable amount of $1.4M for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated October 2026.
Mission & Focus Areas
The foundation’s filing does not state a mission. Its grants support a range of organizations. For example, Hillsborough Education Foundation says its mission is to help ensure Hillsborough County students receive an outstanding public education, while Pasco Education Foundation says it advances student achievement and enriches educational opportunities for students and educators. Other 2025 recipients include organizations whose stated missions concern student leadership and learning, civic development, school programs, and affordable housing for men experiencing homelessness.
Grantmaking
In 2025, the foundation reported 78 grants totaling $1,445,339. Grant amounts ranged from $100 to $196,400, with a median grant of $3,650. The largest grants included $196,400 to Hillsborough Education Foundation, $195,900 to Pasco Education Foundation, $159,989 to Hernando County Education Foundation, $145,000 to Tampa Metropolitan Area YMCA, and $105,000 to St Joseph’s Hospitals Foundation. The filing describes the purposes of these grants as general operating needs.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists J Robert Sierra as president, Michael Sierra as vice president, Stuart Sierra as secretary, and John R Sierra Jr as treasurer.
Mary & Bob Sierra Family Foundation Inc is led by J Robert Sierra, President on every filing since 2021; none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
J Robert Sierra
President
On filings since 2021
1 hr/week
No compensation reported
John R Sierra Jr.
Treasurer
Director → Treasurer, 2025
On filings since 2023
1 hr/week
No compensation reported
Michael Sierra
Vice President
Director → Vice President, 2025
On filings since 2023
1 hr/week
No compensation reported
Stuart Sierra
Secretary
Director → Secretary, 2025
On filings since 2023
1 hr/week
No compensation reported
Former officers (2)
- Former: Mary Sierra (2021–2024) — Vice President
- Former: Thomas Gray (2021–2024) — Secretary & Treasurer
Data from IRS Form 990 filings, 2021–2025. "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 Mary & Bob Sierra Family Foundation Inc
How much does Mary & Bob Sierra Family Foundation Inc give each year?
Mary & Bob Sierra Family Foundation Inc gave $1.4M across 78 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $1.3M across 77 grants.
What is Mary & Bob Sierra Family Foundation Inc's typical grant size?
Mary & Bob Sierra Family Foundation Inc's median grant in 2025 was $3,650, and its average grant was $18,530, across 78 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Mary & Bob Sierra Family Foundation Inc that year got $6K on average.
Where does Mary & Bob Sierra Family Foundation Inc give grants?
Mary & Bob Sierra Family Foundation Inc gives mostly in Florida: 97% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Tampa, FL (34 grants), Brooksville, FL (5 grants), Clearwater, FL (3 grants) and Lutz, FL (3 grants).
Does Mary & Bob Sierra Family Foundation Inc give general operating support?
Yes: 100% of Mary & Bob Sierra Family Foundation Inc's 2025 grants with a stated purpose (78 of 78) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Mary & Bob Sierra Family Foundation Inc's largest grantees?
Mary & Bob Sierra Family Foundation Inc's largest 2025 grantees include Hillsborough Education Foundation ($196,400), Pasco Education Foundation Inc ($195,900) and Hernando County Education Foundation Inc ($159,989), according to its 2025 IRS Form 990-PF. Together they received 38% of its itemized 2025 grant dollars.
How large is Mary & Bob Sierra Family Foundation Inc?
Mary & Bob Sierra Family Foundation Inc reported $23.1M in total assets on its 2025 IRS Form 990-PF. It paid out $1.5M in qualifying distributions that year, against a required minimum of $1.4M (roughly 5% of its investment assets).
What does Mary & Bob Sierra Family Foundation Inc fund?
The foundation’s filing does not state a mission. Its grants support a range of organizations. See mission & focus areas ↑
How do I apply for a grant from Mary & Bob Sierra Family Foundation Inc?
The 2024 filing says there is no specific application form, no submission deadline, and that the requesting entity must be a 501(c)(3) charity. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Mary & Bob Sierra Family Foundation Inc's EIN?
Mary & Bob Sierra Family Foundation Inc's EIN (Employer Identification Number) is 59-2846736. IRS Form 990 filing data is available on this page for 2021–2025.
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated October 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2021–2025
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Cite this profile
Grantable. (2026). Mary & Bob Sierra Family Foundation Inc funder profile. GrantGraph. Retrieved October 4, 2026, from https://grantable.co/funders/mary-and-bob-sierra-family-foundation-inc-morg_632751fbbb4f47abb202350d3a195623
BibTeX
@misc{grantable_592846736_2026,
author = {{Grantable}},
title = {{Mary \& Bob Sierra Family Foundation Inc funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/mary-and-bob-sierra-family-foundation-inc-morg_632751fbbb4f47abb202350d3a195623},
note = {Accessed 2026-10-04. 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 Mary & Bob Sierra Family Foundation Inc'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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