Winslow Family Foundation | Foundation Profile

GrantBay analyzes IRS Form 990-PF data to help grant seekers find fit funders like Winslow Family Foundation. Data shown is extracted from Form 990-PF filings.

EIN: 41-1925882

Foundation Overview

Based in Kamuela, HI, Winslow Family Foundation has awarded 152 grants totaling $4,653,657 to organizations in California, Georgia and 13 other states across the US. Individual grants range from $1,000 to $250,000, with a median award of $10,000.

Latest Tax Year
2024
Total Giving (all years)
$4,653,657
Total Assets
$3,674,295
Median Grant (all grants)
$10,000

Latest Form 990-PF Snapshot

Total Grants
11
Median Grant
$10,000
% Median Grant Decline
-50% (vs previous year)
Data extracted from IRS Form 990-PF filings. Last filing year: March 2026

Foundation Intelligence

Advanced analytics and strategic insights to help nonprofit organizations assess grant opportunities and optimize their application strategies

New Applicant Friendliness
Relationship-Focused: 18%

2 of 11 recipients (18%) were new grantees. Foundation strongly favors organizations with proven track records. New partnerships develop slowly over time.

Geographic Focus
California

47% of grants are awarded in California, with additional funding distributed across 14 other locations. The foundation balances regional focus with broader geographic diversity. Within California, funding concentrates in San Francisco (36%), San Rafael (14%), Sausalito (11%).

Funding Trajectory
+77%

Strong 77% growth in annual giving over 8 years indicates expanding philanthropic capacity and increasing opportunities for grant seekers. This upward trajectory suggests growing foundation resources and commitment.

Program Areas
General Purposes

Highly focused on general purposes with 100% of funding dedicated to this sector. This specialization indicates deep expertise and committed investment in the field.

Where is The Money Going?

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Grants & Funding

Analyzing past grantees provides valuable insights into Winslow Family Foundation's funding preferences, organizational priorities, and grant making patterns. This historical data helps potential applicants understand the foundation's strategic focus and identify successful funding approaches.

Name Amount Location Purpose Year
American Cancer Society $10,000 Atlanta, GA, US General Operating 2024
Estes Park Health Foundation $5,000 Estes Park, CO, US General Operating 2024
Him4her Ministries $5,000 Chanhassen, MN, US General Operating 2024
Inspiring Wellness $30,000 Sausalito, CA, US General Operating 2024
Keck Observatory $10,000 Waimea, HI, US General Operating 2024
Koi Pond Bridge Fund $10,157 Provo, UT, US General Operating 2024
Monies For Bunnies $190,000 Sausalito, CA, US General Operating 2024
Purna Wellness Center $10,000 San Rafael, CA, US General Operating 2024
Queen's North Hawaii Community Hospital $20,000 Kamuela, HI, US General Operating 2024
The Lincoln Society Inc $5,000 North Haven, CT, US General Operating 2024
Uc Berkeley Foundation $15,000 Berkeley, CA, US General Operating 2024
Gladstone Institutes $5,000 San Francisco, CA, US General Operating 2023
Inspiring Wellness $30,000 Sausalito, CA, US General Operating 2023
Keck Observatory $5,000 Waimea, HI, US General Operating 2023
North Hawaii Community Hospital $20,000 Waimea, HI, US General Operating 2023
The Lincoln Society Inc $5,000 North Haven, CT, US General Operating 2023
Uc Berkeley Foundation $30,000 Berkeley, CA, US General Operating 2023
Pbs Foundation $25,000 Arlington, VA, US General Operating 2023
New Life Family Services $5,000 Richfield, MN, US General Operating 2023
Queen's North Hawaii Community Hospital $25,000 Kamuela, HI, US General Operating 2023
Jim Saunders Fund $5,000 Kailua Kona, HI, US General Operating 2023
The Blake School $25,000 Minneapolis, MN, US General Operating 2023
Hui Aloha Kiholo $10,000 Kamuela, HI, US General Operating 2023
Dawn Redwoods Charitable Trust $5,000 Belvedere Tiburon, CA, US General Operating 2023
Koi Pond Bridge Fund $50,000 Provo, UT, US General Operating 2023
Monies For Bunnies $115,000 Sausalito, CA, US General Operating 2023
American Cancer Society $10,000 Atlanta, GA, US General Operating 2022
Cinnabar Art Corporation $25,000 Petaluma, CA, US General Operating 2022
Gladstone Institutes $125,000 San Francisco, CA, US General Operating 2022
Global Peace Film Festival $5,000 Winter Park, FL, US General Operating 2022
Hawaii Community Foundation $100,000 Honolulu, HI, US General Operating 2022
Howard Business School $15,000 Washington, DC, US General Operating 2022
Inspiring Wellness $60,000 Sausalito, CA, US General Operating 2022
Keck Observatory $5,000 Waimea, HI, US General Operating 2022
Marin General Hospital Foundation $5,000 Greenbrae, CA, US General Operating 2022
Purna Wellness Center $20,000 San Rafael, CA, US General Operating 2022
Rocky Mountain Conservancy $5,000 Estes Park, CO, US General Operating 2022
That Man May See Inc $10,000 San Francisco, CA, US General Operating 2022
The Lincoln Society Inc $5,000 North Haven, CT, US General Operating 2022
The Nature Conservancy $75,000 Arlington, VA, US General Operating 2022
Uc Berkeley Foundation $30,000 Berkeley, CA, US General Operating 2022
Ucsf Foundation $25,000 San Francisco, CA, US General Operating 2022
Ucsf Health $25,000 San Francisco, CA, US General Operating 2022
Yale Alumni Fund $60,000 New Haven, CT, US General Operating 2022
American Cancer Society $10,000 Atlanta, GA, US General Operating 2022
Cinnabar Art Corporation $25,000 Petaluma, CA, US General Operating 2022
Gladstone Institutes $125,000 San Francisco, CA, US General Operating 2022
Global Peace Film Festival $5,000 Winter Park, FL, US General Operating 2022
Hawaii Community Foundation $100,000 Honolulu, HI, US General Operating 2022
Howard Business School $15,000 Washington, DC, US General Operating 2022
Inspiring Wellness $60,000 Sausalito, CA, US General Operating 2022
Keck Observatory $5,000 Waimea, HI, US General Operating 2022
Marin General Hospital Foundation $5,000 Greenbrae, CA, US General Operating 2022
Purna Wellness Center $20,000 San Rafael, CA, US General Operating 2022
Rocky Mountain Conservancy $5,000 Estes Park, CO, US General Operating 2022
That Man May See Inc $10,000 San Francisco, CA, US General Operating 2022
The Lincoln Society Inc $5,000 North Haven, CT, US General Operating 2022
The Nature Conservancy $75,000 Arlington, VA, US General Operating 2022
Uc Berkeley Foundation $30,000 Berkeley, CA, US General Operating 2022
Ucsf Foundation $25,000 San Francisco, CA, US General Operating 2022
Ucsf Health $25,000 San Francisco, CA, US General Operating 2022
Yale Alumni Fund $60,000 New Haven, CT, US General Operating 2022
American Cancer Society $10,000 Atlanta, GA, US General Operating 2022
Cinnabar Art Corporation $25,000 Petaluma, CA, US General Operating 2022
Gladstone Institutes $125,000 San Francisco, CA, US General Operating 2022
Global Peace Film Festival $5,000 Winter Park, FL, US General Operating 2022
Hawaii Community Foundation $100,000 Honolulu, HI, US General Operating 2022
Howard Business School $15,000 Washington, DC, US General Operating 2022
Inspiring Wellness $60,000 Sausalito, CA, US General Operating 2022
Keck Observatory $5,000 Waimea, HI, US General Operating 2022
Marin General Hospital Foundation $5,000 Greenbrae, CA, US General Operating 2022
Purna Wellness Center $20,000 San Rafael, CA, US General Operating 2022
Rocky Mountain Conservancy $5,000 Estes Park, CO, US General Operating 2022
That Man May See Inc $10,000 San Francisco, CA, US General Operating 2022
The Lincoln Society Inc $5,000 North Haven, CT, US General Operating 2022
The Nature Conservancy $75,000 Arlington, VA, US General Operating 2022
Uc Berkeley Foundation $30,000 Berkeley, CA, US General Operating 2022
Ucsf Foundation $25,000 San Francisco, CA, US General Operating 2022
Ucsf Health $25,000 San Francisco, CA, US General Operating 2022
Yale Alumni Fund $60,000 New Haven, CT, US General Operating 2022
10000 Degrees $2,500 San Rafael, CA, US General Operating 2021
American Cancer Society $10,000 Atlanta, GA, US General Operating 2021
Belvedere Police Officers Association $5,000 Belvedere, CA, US General Operating 2021
Gladstone Institutes $250,000 San Francisco, CA, US General Operating 2021
Hawaii Community Foundation $200,000 Honolulu, HI, US General Operating 2021
Howard Business School $10,000 Washington, DC, US General Operating 2021
Inspiring Wellness $90,000 Sausalito, CA, US General Operating 2021
Kawaihae Canoe Club $5,000 Kamuela, HI, US General Operating 2021
Keck Observatory $5,000 Waimea, HI, US General Operating 2021
Marin General Hospital Foundation $35,000 Greenbrae, CA, US General Operating 2021
Ocean Film Festival $5,000 San Francisco, CA, US General Operating 2021
Ritter Center - Mccashill Uts $5,000 San Rafael, CA, US General Operating 2021
Rocky Mountain Conservancy $5,000 Estes Park, CO, US General Operating 2021
San Francisco Opera $7,500 San Francisco, CA, US General Operating 2021
The Basic Fund $2,500 Oakland, CA, US General Operating 2021
The Big Island Giving Tree $25,000 Kamuela, HI, US General Operating 2021
The Lincoln Society Inc $5,000 North Haven, CT, US General Operating 2021
Uc Berkeley Foundation $30,000 Berkeley, CA, US General Operating 2021
Ucsf Foundation $25,000 San Francisco, CA, US General Operating 2021
Ucsf Health $25,000 San Francisco, CA, US General Operating 2021
University Of Hawaii Foundation $1,500 Honolulu, HI, US General Operating 2021
University Of Illinois Foundation $2,000 Urbana, IL, US General Operating 2021
Youth Tennis $2,500 Carson, CA, US General Operating 2021
Zeta Psi Education Foundation $2,000 Pearl River, NY, US General Operating 2021
10000 Degrees $2,500 San Rafael, CA, US General Operating 2020
American Cancer Society $10,000 Atlanta, GA, US General Operating 2020
Belvedere Cares Foundation $1,000 San Rafael, CA, US General Operating 2020
Belvedere Police Officers Association $5,000 Belvedere, CA, US General Operating 2020
Cinnabar Art Corporation $25,000 Petaluma, CA, US General Operating 2020
City Of Belvedere $10,000 Belvedere, CA, US General Operating 2020
Gladstone Institutes $50,000 San Francisco, CA, US General Operating 2020
Guthrie Theater $2,500 Minneapolis, MN, US General Operating 2020
Marin General Hospital Foundation $25,000 Greenbrae, CA, US General Operating 2020
Ocean Film Festival $7,500 San Francisco, CA, US General Operating 2020
The Basic Fund $4,000 Oakland, CA, US General Operating 2020
The Big Island Giving Tree $75,000 Kamuela, HI, US General Operating 2020
The Lincoln Society Inc $5,000 North Haven, CT, US General Operating 2020
The Nature Conservancy $50,000 Arlington, VA, US General Operating 2020
Ucsf Foundation $25,000 San Francisco, CA, US General Operating 2020
Youth Tennis $5,000 Carson, CA, US General Operating 2020
American Cancer Society $10,000 Atlanta, GA, US General Operating 2018
Gladstone Institutes $250,000 San Francisco, CA, US General Operating 2018
The Blake School $25,000 Hopkins, MN, US General Operating 2018
The Lincoln Society Inc $15,000 North Haven, CT, US General Operating 2018
The Nature Conservancy $10,000 Arlington, VA, US General Operating 2018
Ucsf Foundation $50,000 San Francisco, CA, US General Operating 2018
University Of California Berkeley $10,000 Berkeley, CA, US General Operating 2018
North Hawaii Community Hospital $25,000 Waimea, HI, US General Operating 2018
10000 Degrees $7,500 San Rafael, CA, US General Operating 2018
Kahilu Theatre Foundation $5,000 Waimea, HI, US General Operating 2018
National Museum Of Wildlife Art $10,000 Jackson, WY, US General Operating 2018
Amherst H Wilder Foundation $5,000 St Paul, MN, US General Operating 2018
Tiburon Volunteer Fire Department $5,000 Tiburon, CA, US General Operating 2018
Marin General Hospital Foundation $10,000 Greenbrae, CA, US General Operating 2018
Minneapolis Institute Of Art $5,000 Minneapolis, MN, US General Operating 2018
Cinnabar Art Corporation $15,000 Petaluma, CA, US General Operating 2018
Yale Alumni Fund $15,000 New Haven, CT, US General Operating 2018
American Cancer Society $5,000 Atlanta, GA, US General Operating 2017
Belvedere Cove Foundation $5,000 San Rafael, CA, US General Operating 2017
Community Foundation Of Jackson Hole $8,000 Jackson, WY, US General Operating 2017
Cystic Fibrosis Foundation $10,000 Bethesda, MD, US General Operating 2017
Frost School Of Music $50,000 Coral Gables, FL, US General Operating 2017
Gladstone Institutes $200,000 San Francisco, CA, US General Operating 2017
Harvard Business School $10,000 Boston, MA, US General Operating 2017
Marin School Of Arts $50,000 Novato, CA, US General Operating 2017
National Alliance Of Mental Illness $5,000 Arlington, VA, US General Operating 2017
The Aspen Institute $10,000 Washington, DC, US General Operating 2017
The Lincoln Society Inc $10,000 North Haven, CT, US General Operating 2017
The Nature Conservancy $50,000 Arlington, VA, US General Operating 2017
Ucsf Foundation $50,000 San Francisco, CA, US General Operating 2017
The Nature Conservancy $50,000 Arlington, VA, US General Operating 2016
Gladstone Institutes $125,000 San Francisco, CA, US General Operating 2016

Foundations Similar to Winslow Family Foundation

Discover 5 foundations with comparable assets ($3,444,805-$3,933,214), similar grant patterns, and geographic focus in HI that may also align with your organization's funding needs and grant seeking strategy.

Foundation Name Total Assets Typical Grant Size Service Area Similarity Match

EIN: 99-6003337 | 35 grants awarded
$3,645,620
(≈ Similar)
$20,000
median grant
Honolulu, HI
Same state
100%
Excellent match

EIN: 36-4942620 | 147 grants awarded
$3,573,206
(≈ Similar)
$5,000
median grant
Honolulu, HI
Same state
99%
Excellent match

EIN: 27-0952789 | 23 grants awarded
$3,822,048
(≈ Similar)
$10,000
median grant
Lahaina, HI
Same state
98%
Excellent match

EIN: 99-0329759 | 102 grants awarded
$3,444,805
(≈ Similar)
$10,000
median grant
Honolulu, HI
Same state
97%
Excellent match

EIN: 20-3283739 | 108 grants awarded
$3,933,214
(≈ Similar)
$15,000
median grant
Kailua Kona, HI
Same state
96%
Excellent match

Contact Information

Official contact details for Winslow Family Foundation as registered with the IRS. These details are essential for grant applications, correspondence, and due diligence processes.

EIN 41-1925882
Website N/A
Address 337 BELVEDERE AVE Belvedere, CA 94920-0000

Key People (2)

Board members, trustees, and key staff who oversee Winslow Family Foundation's grant making decisions and strategic direction. Understanding leadership composition can provide insights into foundation priorities and potential networking opportunities.

President/treasurer/secretary Clark J Winslow
Vice President Sharon L Winslow

Forms 990-PF

IRS Form 990-PF filings provide comprehensive financial information, grant details, and operational data. These documents are essential resources for understanding foundation capacity, giving patterns, and strategic priorities.

Form 990-PF Research Tips
  • Review Part XV for detailed grant recipient information and funding purposes
  • Check Part I for total assets, annual giving amounts, and payout requirements
  • Examine Part VIII for key personnel compensation and board structure
  • Look for trends across multiple years to understand giving patterns

About This Foundation Profile

This comprehensive foundation profile for Winslow Family Foundation is powered by Grant Bay's advanced foundation research platform. Our system analyzes IRS Form 990-PF filings, grant histories, and philanthropic patterns to provide nonprofit organizations with actionable intelligence for grant seeking success.

Data Sources & Accuracy

All information is derived from official IRS filings and public records. Grant Bay processes thousands of Form 990-PF documents to extract grant details, financial data, and organizational information. Data accuracy depends on foundation reporting quality and IRS filing completeness.

Research Applications

Use this profile for prospect research, grant strategy development, application preparation, and relationship building. Combine this data with additional research on foundation priorities, application processes, and board member backgrounds for comprehensive grant seeking strategies.

Data Currency: Last updated March 2026 based on IRS Form 990-PF filings. Foundation information reflects most recent available tax year data.