Walter and Lillian Siben Foundation
The Walter and Lillian Siben Foundation is a private foundation based in Boca Raton, Florida. Its 2022 filing is marked as the organization’s final return; the foundation reported that it had disposed of all its assets and disbursed all funds to charitable organizations, so it appears to have wound down and stopped grantmaking.
Key facts about Walter and Lillian Siben Foundation
In short: Walter and Lillian Siben Foundation gave $756K across 25 grants in 2022 (avg $30K), top state Florida. 40% of 2022 grantees were new. Source: 2022 IRS Form 990-PF.
- EIN
- 11-3337637
- Latest 990 filing
- Form 990-PF, 2022
- Annual giving (2022)
- $756,011
- Grants made (2022)
- 25
- Average grant
- $30,240
- Median grant
- $10,000
- New grantees (estimate)
- 40% first-time grantees (10 of 25, 2022)
- Primary geography
- Florida (46% of itemized 2022 grant dollars)
- Accepts unsolicited proposals
- No
Data from IRS Form 990-PF, 2022; updated October 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 2022 IRS Form 990-PF · View filing
Total Assets
—
Annual Giving
$756K
+1133.3% YoY
Grant Count
25
+0.0% YoY
Avg Grant Size
$30K
+1133.3% YoY
Under IRS private-foundation payout rules, Walter and Lillian Siben Foundation reported a distributable amount of $18K for 2022 — the minimum it must pay out in qualifying distributions.
Is Walter and Lillian Siben Foundation open to new grantees?
40%
first-time grantees, 2022
In 2022, 10 of 25 grantees (40%) were first-time recipients. First grants averaged $30K; repeat grants $31K. How we count
Medians: $10K first-time, $15K repeat.
- 48% of 2022 grantees were also funded in 2021. Method
- In 2022 it paid out well above its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2022). 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 mission statement for the foundation is provided. Its 2022 grants show support for organizations working in several areas. For example, The Soup Kitchen described its work as providing food, baby supplies, education, immunizations, and other items at no cost to people seeking aid. Caridad Center said its mission is to improve the health, education, and quality of life of underserved children and families in Palm Beach County. Animal Aid described its work as rescuing and rehabilitating cats and dogs, supporting adoptions, and providing low-cost spay/neuter services. These are the grantees’ stated missions, not the foundation’s.
Grantmaking
In 2022, the foundation made 25 grants totaling $756,011. Grant amounts ranged from $350 to $220,000, with a median grant of $10,000. The largest grants included $220,000 to Schwab Charitable Fund for a charitable giving program and $160,000 to PETA for animal-rights-related operating support. Other notable grants were $60,000 each to Bethesda Hospital Foundation and The Soup Kitchen, $40,000 each to Caridad Center and Feeding South Florida, and $19,661 to Animal Aid.
The foundation stated that it made contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Because its 2022 return was final and it reported that all assets had been disposed of and funds disbursed, this is not a current application opportunity.
Ready to take the next step with Walter and Lillian Siben Foundation?
Geographic Focus
Where this funder awards grants
In 2022, 46% of grant dollars went to recipients in Florida, 30% to California, and 21% to Virginia. Recipients in Washington, DC, and New York each received 1%.
Grant Distribution by State
Share of 2022 grant dollars across all 25 itemized grants.
Cities
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2022, annual grant giving ranged from $29K (2020) to $756K (2022). In 2022 it made 25 grants totaling $756K.
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2022
The largest 2022 recipient was Schwab Charitable Fund ($220K). Together the top 10 received $650K.
Grant Size Distribution
70 grants across all recorded years
The most common grant size was under $50K: 66 grants of 70 (94%).
Giving History
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Schwab Charitable Fund San Francisco, CA | Unrestricted grant for charitable giving program that providesusefulinformation,unbiased guidanceandadvantageouswaystogive | $220,000 |
| Peta Norfolk, VA | Unrestricted Animal Rights Related Operating Grant | $160,000 |
| Bethesda Hospital Foundation Inc Boynton Beach, FL | Unrestricted Hospital Support Related Grant | $60,000 |
| The Soup Kitchen Inc Boynton Beach, FL | Unrestricted Indigent Care Related Operating Grant | $60,000 |
| Caridad Center Inc Boynton Beach, FL | Unrestricted Indigent Health Services Related Operating Grant | $40,000 |
| Feeding South Florida Pembroke Park, FL | Unrestricted Grant to Provide Food to South Floridians | $40,000 |
| Crazy 8 Cat Rescue Parkland, FL | Unrestricted Animal Care Related Operating Grant | $20,000 |
| Animal Aid Oakland Park, FL | Unrestricted Animal Shelter Related Operating Grant | $19,661 |
| Lady Luck Animal Resuce Inc Lake Worth, FL | Unrestricted Animal Rescue Related Operating Grant | $15,000 |
| Dezzy's Second Chance Animal Rescue Delray Beach, FL | Unrestricted Animal Care Related Operating Grant | $15,000 |
Financial History
Multi-year comparison from IRS filings
| Filing year | Assets | Revenue | Expenses | Grants |
|---|---|---|---|---|
| 2022 | Not stated | $222,714 | $764,962 | $756,011 |
| 2021 | $542,572 | $131,086 | $81,917 | $61,300 |
| 2020 | $493,094 | $48,724 | $45,462 | $29,350 |
The most recent filing on record is for 2022. The foundation’s filing states that it had disposed of all its assets and disbursed all funds to charitable organizations.
| Metric | 2022 | 2021 | 2020 |
|---|---|---|---|
| Total Assets | — | $542,572 | $493,094 |
| Revenue | $222,714 | $131,086 | $48,724 |
| Expenses | $764,962 | $81,917 | $45,462 |
| Qualifying Distributions | $758,986 | $69,920 | — |
| Net Investment Income | $216,415 | $68,132 | $39,318 |
| Distributable Amount | $17,526 | $37,115 | $30,183 |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2022
Leadership & Key People
Leadership team and compensation from IRS filings
The 2022 filing listed Jeffrey Siben and Susanne Siben Tabor as directors, and Gary Siben as secretary/treasurer.
Walter and Lillian Siben Foundation's 2022 filing lists 3 officers; 1 of 3 officers listed in 2022 is compensated.
Officers on the 2022 filing
Jeffrey Siben
Director
On filings since 2020
5 hrs/week
$9K (2020) → $4K (2022)
Susanne Siben Tabor
Director
On filings since 2020
0.5 hrs/week
No compensation reported
Gary Siben
Secretary & Treasurer
On filings since 2020
0.5 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2020–2022. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2022 IRS filing
The highest reported compensation on the 2022 filing was $4K, to Jeffrey Siben (Director).
Contact
Mailing address: 728 Sevilla Drive, Boca Raton, FL 33432
Phone: (561) 750-2199
Frequently asked questions about Walter and Lillian Siben Foundation
How much does Walter and Lillian Siben Foundation give each year?
Walter and Lillian Siben Foundation gave $756K across 25 grants in 2022, according to its 2022 IRS Form 990-PF. In 2021 it gave $61K across 25 grants.
What is Walter and Lillian Siben Foundation's typical grant size?
Walter and Lillian Siben Foundation's median grant in 2022 was $10,000, and its average grant was $30,240, across 25 grants on its 2022 IRS Form 990-PF. Organizations receiving their first grant from Walter and Lillian Siben Foundation that year got $30K on average.
Where does Walter and Lillian Siben Foundation give grants?
Walter and Lillian Siben Foundation's top state is Florida, with 46% of the grant dollars itemized on its 2022 IRS Form 990-PF. The next largest states were California (30%) and Virginia (21%). The most frequent recipient cities were Boynton Beach, FL (4 grants).
Does Walter and Lillian Siben Foundation give general operating support?
Yes: 100% of Walter and Lillian Siben Foundation's 2022 grants with a stated purpose (25 of 25) were for general or operating support, per its 2022 IRS Form 990-PF.
Who are Walter and Lillian Siben Foundation's largest grantees?
Walter and Lillian Siben Foundation's largest 2022 grantees include Schwab Charitable Fund ($220,000), Peta ($160,000) and Bethesda Hospital Foundation Inc ($60,000), according to its 2022 IRS Form 990-PF. Together they received 58% of its itemized 2022 grant dollars.
What does Walter and Lillian Siben Foundation fund?
No mission statement for the foundation is provided. Its 2022 grants show support for organizations working in several areas. For example, The Soup Kitchen described its work as providing food, baby supplies, education, immunizations, and other items at no cost to people seeking aid. See mission & focus areas ↑
How do I apply for a grant from Walter and Lillian Siben Foundation?
Walter and Lillian Siben Foundation does not accept unsolicited proposals, according to Grantable's research on its published guidelines.
How much is Walter and Lillian Siben Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2022, Walter and Lillian Siben Foundation reported a distributable amount of $18K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Walter and Lillian Siben Foundation's EIN?
Walter and Lillian Siben Foundation's EIN (Employer Identification Number) is 11-3337637. IRS Form 990 filing data is available on this page for 2020–2022.
Does Walter and Lillian Siben Foundation 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 October 2026.
Here's the math on researching Walter and Lillian Siben Foundation by hand.
Explore Open Grants
Browse active grant opportunities in Walter and Lillian Siben Foundation's focus areas in our free grants database
Similar Funders
Funders with grantees in common, and similar funders in Florida
Leslie L Alexander Foundation Inc
Delray Beach, FL
The Leslie L Alexander Foundation supports animal rescue, education, children’s services, and other charitable work. In 2024, grants ranged from $600 to $1 million, with a median of $35,000; giving was concentrated in Florida and Texas, with awards also made elsewhere. It gives only to preselected organizations and does not accept unsolicited requests.
Assets
$291.4M
Grants
622
Total Given
$28.4M
Publix Super Markets Charities Inc
Lakeland, FL
Publix Super Markets Charities supports nonprofits addressing hunger, homelessness and housing, youth, education, and community needs in Florida, Georgia, Alabama, North Carolina, South Carolina, Tennessee, Virginia, and Kentucky. Its 2024 median grant was $2,500, though awards ranged widely; it accepts online requests from eligible organizations, with application periods varying by program.
Assets
$233.8M
Grants
3,269
Total Given
$52.5M
Enterprise Holdings Foundation
Saint Louis, MO
The Enterprise Holdings Foundation supports charitable and educational nonprofits in communities where Enterprise Mobility operates, focusing on health, education, arts, and disaster relief; applicants must be actively supported by an Enterprise Mobility team member, spouse, or domestic partner. Giving varies widely: it reported 9,499 grants in 2024, but its 2025 filing showed one grant of $101.4 million, so that amount is not a typical award. Applications are accepted at any time through eligible Enterprise-affiliated applicants; the Foundation does not limit giving to preselected organizations.
Assets
$594.3M
Grants
1
Total Given
$101.4M
Aetna Foundation Inc
Hartford, CT
Aetna Foundation supported health and wellness, access to health care, and related community needs; its 2021 grants ranged from $5,000 to $1 million, with a median of $40,000, and went to organizations across multiple states, especially in D.C. and Connecticut. Its 2021 filing was marked final, so it appears to have ended or be winding down grantmaking; that filing said there were no restrictions on who could apply and pointed applicants to its website for application materials.
Assets
—
Grants
65
Total Given
$7.2M
Community Foundation for Palm Beach and Martin Counties Inc
West Palm Beach, FL
The Foundation funds nonprofits serving Palm Beach and Martin Counties, or projects that directly benefit residents there, in areas including education and youth, economic opportunity, thriving communities, capacity building, and crisis preparation and response. Its FY25 competitive grants averaged about $37,000, with a median of $30,000; awards ranged from $5,397 to $1.1 million. It accepts year-round requests starting with a Letter of Inquiry, and may invite selected applicants to submit a full proposal.
Assets
$293.4M
Grants
421
Total Given
$26.5M
The Community Foundation for Northeast Florida Inc
Jacksonville, FL
The Community Foundation for Northeast Florida supports neighborhood strengthening, nonprofit capacity, education, older adults, the arts, and other community needs, primarily in Baker, Clay, Duval, Nassau, Putnam, and St. Johns counties. Its 2024 grants had a median of $5,000, while its Program Support grants offer up to $25,000; eligible nonprofits may apply to competitive programs, but donor-advised funds do not accept applications.
Assets
$708.7M
Grants
2,470
Total Given
$78.0M
Community Foundation of Tampa Bay Inc
Tampa, FL
The Community Foundation of Tampa Bay funds nonprofits through competitive grants and other programs focused on economic opportunity, environmental resilience, health and wellbeing, education, and vibrant communities. Its typical grant is about $25,000, and it serves Hillsborough, Pinellas, Pasco, Hernando, and Citrus counties. It accepts applications through its competitive grants process and rolling Critical Needs List.
Assets
$1.0B
Grants
698
Total Given
$54.3M
Gulf Coast Community Foundation Inc
Venice, FL
Gulf Coast Community Foundation funds arts and culture, civic and economic development, education, the environment, health and human services, and disaster response, with grants generally serving Sarasota and Charlotte counties, DeSoto County, Boca Grande, Lakewood Ranch, and Longboat Key, Florida. In 2025, grants ranged from $5,030 to $2,101,739, with a median of $16,251; Community Grants are capped at $25,000 per nonprofit per fiscal year. It accepts letters of inquiry for Community Grants; Catalytic and Initiative Grants are by invitation.
Assets
$533.7M
Grants
651
Total Given
$45.0M
Early Learning Coalition of Broward County Inc
Fort Lauderdale, FL
The Early Learning Coalition of Broward funds child care reimbursement and early-learning providers, including programs supporting child care and preschool, primarily in Broward County, Florida. Its 2025 grants ranged from $5,127 to $3,994,863, with a median of $158,921. The profile does not state whether it accepts unsolicited requests.
Assets
$15.9M
Grants
636
Total Given
$152.2M
CSX Foundation Inc
Jacksonville, FL
Assets
$9.7M
Grants
607
Total Given
$13.7M
United Way Miami Inc
Miami, FL
United Way Miami funds education, economic mobility, health and wellbeing, and resilient-community programs, with its community focus in Miami-Dade County. Its 2025 grants ranged from $5,082 to $1,693,432, with a median of $18,410; published opportunities include selected awards of up to $153,000. It publishes specific grant opportunities and application details; whether it accepts unsolicited requests is not stated.
Assets
$157.2M
Grants
562
Total Given
$32.6M
More Funders in Florida
Walter and Lillian Siben Foundation down — hundreds of funders to go?