August & Sylvia Sebastiani Foundation | Foundation Profile

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

EIN: 68-0386154

Foundation Overview

Based in Sonoma, CA, August & Sylvia Sebastiani Foundation has awarded 89 grants totaling $1,288,555 to organizations in California, Indiana and 2 other states across the US. Individual grants range from $50 to $171,590, with a median award of $3,410.

Latest Tax Year
2023
Total Giving (all years)
$1,288,555
Total Assets
$31,403
Median Grant (all grants)
$3,410

Latest Form 990-PF Snapshot

Total Grants
16
Median Grant
$2,099
% Median Grant Decline
-65% (vs previous year)
Data extracted from IRS Form 990-PF filings. Last filing year: February 2026

Foundation Intelligence

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

New Applicant Friendliness
Closed Network: 13%

2 of 16 recipients (13%) were new grantees. Foundation maintains tight relationships with established partners. New applicants rarely succeed without insider connections.

Geographic Focus
California

97% of all grants are concentrated in California, demonstrating highly focused geographic giving. This foundation prioritizes deep community impact in its primary service area. Within California, funding concentrates in Sonoma (60%), Napa (17%), Walnut Creek (12%).

Funding Trajectory
-80%

Declining funding trend with 80% decrease over 7 years may indicate reduced grant opportunities or shifting foundation priorities. This trajectory suggests more competitive application environment.

Program Areas
General Purposes + 2 others

Diversified giving across multiple program areas with primary emphasis on general purposes (69%). This broad approach suggests openness to various causes and innovative cross-sector solutions.

Where is The Money Going?

Loading geographic data...
Loading chart...
Loading chart...
Loading chart...

Grants & Funding

Analyzing past grantees provides valuable insights into August & Sylvia Sebastiani 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
Boys And Girls Club $2,500 Sonoma, CA, US No Specific Purpose 2023
Js Paluch Companyst Francis Of Assisi $1,565 Walnut Creek, CA, US No Specifc Purpose. 2023
Justin-siena High School $7,500 Napa, CA, US No Specific Purpose. 2023
Libby Breaw $15,000 Sonoma, CA, US Widow Assistance. 2023
St Francis Solano Catholic Church $1,698 Sonoma, CA, US No Specific Purpose 2023
St Francis Solano School $20,641 Sonoma, CA, US No Specific Purpose. 2023
Napa Womens Center $250 Napa, CA, US Contributions 2023
Sonoma Little League $500 Sonoma, CA, US Team Sponsorship 2023
Boys And Girls Club $2,500 Sonoma, CA, US No Specific Purpose 2023
Js Paluch Companyst Francis Of Assisi $1,565 Walnut Creek, CA, US No Specifc Purpose. 2023
Justin-siena High School $7,500 Napa, CA, US No Specific Purpose. 2023
Libby Breaw $15,000 Sonoma, CA, US Widow Assistance. 2023
St Francis Solano Catholic Church $1,698 Sonoma, CA, US No Specific Purpose 2023
St Francis Solano School $20,641 Sonoma, CA, US No Specific Purpose. 2023
Napa Womens Center $250 Napa, CA, US Contributions 2023
Sonoma Little League $500 Sonoma, CA, US Team Sponsorship 2023
Js Paluch Companyst Francis Of Assisi $3,410 Walnut Creek, CA, US No Specifc Purpose. 2022
Justin-siena High School $11,500 Napa, CA, US No Specific Purpose. 2022
Libby Breaw $36,000 Sonoma, CA, US Widow Assistance. 2022
The Presentation School $23,814 Sonoma, CA, US No Specific Purpose. 2022
St Francis Solano School $7,127 Sonoma, CA, US No Specific Purpose. 2022
St John's Lutheran School $5,000 Napa, CA, US No Specific Purpose 2022
Boys And Girls Club $2,500 Sonoma, CA, US No Specific Purpose 2022
St Francis Solano Catholic Church $2,993 Sonoma, CA, US No Specific Purpose 2022
Js Paluch Companyst Francis Of Assisi $3,410 Walnut Creek, CA, US No Specifc Purpose. 2022
Justin-siena High School $11,500 Napa, CA, US No Specific Purpose. 2022
Libby Breaw $36,000 Sonoma, CA, US Widow Assistance. 2022
The Presentation School $23,814 Sonoma, CA, US No Specific Purpose. 2022
St Francis Solano School $7,127 Sonoma, CA, US No Specific Purpose. 2022
St John's Lutheran School $5,000 Napa, CA, US No Specific Purpose 2022
Boys And Girls Club $2,500 Sonoma, CA, US No Specific Purpose 2022
St Francis Solano Catholic Church $2,993 Sonoma, CA, US No Specific Purpose 2022
Js Paluch Companyst Francis Of Assisi $3,410 Walnut Creek, CA, US No Specifc Purpose. 2022
Justin-siena High School $11,500 Napa, CA, US No Specific Purpose. 2022
Libby Breaw $36,000 Sonoma, CA, US Widow Assistance. 2022
The Presentation School $23,814 Sonoma, CA, US No Specific Purpose. 2022
St Francis Solano School $7,127 Sonoma, CA, US No Specific Purpose. 2022
St John's Lutheran School $5,000 Napa, CA, US No Specific Purpose 2022
Boys And Girls Club $2,500 Sonoma, CA, US No Specific Purpose 2022
St Francis Solano Catholic Church $2,993 Sonoma, CA, US No Specific Purpose 2022
Js Paluch Companyst Francis Of Assisi $1,963 Walnut Creek, CA, US No Specifc Purpose. 2021
Justin-siena High School $1,000 Napa, CA, US No Specific Purpose. 2021
Libby Breaw $36,000 Sonoma, CA, US Widow Assistance. 2021
Miscellaneous Contributions $1,579 Sonoma, CA, US No Specific Purpose. 2021
The Presentation School $86,800 Sonoma, CA, US No Specific Purpose. 2021
Sonoma Valley United Soccer $2,000 Sonoma, CA, US No Specific Purpose. 2021
Js Paluch Companyst Francis Of Assisi $1,500 Walnut Creek, CA, US No Specifc Purpose. 2020
Justin-siena High School $1,000 Napa, CA, US No Specific Purpose. 2020
Libby Breaw $36,000 Sonoma, CA, US Widow Assistance. 2020
Miscellaneous Contributions $1,115 Sonoma, CA, US No Specific Purpose. 2020
The Presentation School $84,693 Sonoma, CA, US No Specific Purpose. 2020
Boys And Girls Club Sonoma Valley $3,000 Verano, CA, US No Specific Purpose. 2018
Js Paluch Companyst Francis Of Assisi $3,215 Walnut Creek, CA, US No Specifc Purpose. 2018
Justin-siena High School $2,000 Napa, CA, US No Specific Purpose. 2018
Libby Breaw $33,000 Sonoma, CA, US Widow Assistance. 2018
Miscellaneous Contributions $700 Sonoma, CA, US No Specific Purpose. 2018
Sonoma Little League $8,000 Sonoma, CA, US No Specific Purpose. 2018
Sonoma Valley Youth Soccer Associat $1,777 Sonoma, CA, US No Specific Purpose. 2018
The Presentation School $109,655 Sonoma, CA, US No Specific Purpose. 2018
Barbara Leedom - Usf $19,800 San Francisco, CA, US Widow Assistance. 2017
Boys And Girls Club Sonoma Valley $12,500 Verano, CA, US No Specific Purpose. 2017
Js Paluch Companyst Francis Of Assisi $1,067 Walnut Creek, CA, US No Specifc Purpose 2017
Libby Breaw $36,000 Sonoma, CA, US Widow Assistance. 2017
Miscellaneous Contributions $4,800 Sonoma, CA, US No Specific Purpose. 2017
Sonoma Little League $219 Sonoma, CA, US No Specific Purpose. 2017
Sonoma Valley Youth Soccer Associat $1,000 Sonoma, CA, US No Specific Purpose. 2017
St Francis Solano Church $3,599 Sonoma, CA, US No Specific Purpose. 2017
The Presentation School $171,590 Sonoma, CA, US No Specific Purpose. 2017
Barbara Leedom - Usf $26,400 San Francisco, CA, US Widow Assistance. 2016
Boys And Girls Club Sonoma Valley $45,995 Verano, CA, US No Specific Purpose. 2016
Chuck Voit Mckarre $8,000 Petaluma, CA, US Care Assistance. 2016
Collegiate Housing Services $2,970 Indianapolis, IN, US No Specific Purpose. 2016
Flowery Elementary School $50 Sonoma, CA, US No Specific Purpose. 2016
Jerelle Wilson $50 Los Angeles, CA, US Mentoring And Educational 2016
Justin-siena Foundation $600 Napa, CA, US No Specific Purpose. 2016
Libby Breaw $36,000 Sonoma, CA, US Widow Assistance. 2016
Miscellaneous Contributions $11,950 Sonoma, CA, US No Specific Purpose. 2016
Nazareth Agua Callente Villa $11,000 Sonoma, CA, US No Specific Purpose. 2016
Queen Of The Valley Foundation $1,000 Napa, CA, US No Specific Purpose. 2016
Sonoma Girls Softball Assoc $175 Sonoma, CA, US No Specific Purpose. 2016
Sonoma Little League $400 Sonoma, CA, US No Specific Purpose. 2016
Sonoma Valley Youth Soccer Associat $1,600 Sonoma, CA, US No Specific Purpose. 2016
St Francis Solano Church $1,706 Sonoma, CA, US No Specific Purpose. 2016
The Presentation School $75,553 Sonoma, CA, US No Specific Purpose. 2016
Universal Technical Intitute $11,899 Sacramento, CA, US No Specific Purpose. 2016
St Vincent De Paul High School $200 Petaluma, CA, US No Specific Purpose 2016
American's United For Life $5,000 Washington, DC, US No Specific Purpose 2016
Ama Foundation $5,000 Chicago, IL, US No Specific Purpose 2016
Js Paluch Companyst Francis Of Assisi $1,095 Walnut Creek, CA, US No Specifc Purpose 2016

Foundations Similar to August & Sylvia Sebastiani Foundation

Discover 5 foundations with comparable assets ($31,073-$31,895), similar grant patterns, and geographic focus in CA 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: 82-2615945 | 4 grants awarded
$31,503
(≈ Similar)
$5,000
median grant
Newark, CA
Same state
100%
Excellent match

EIN: 13-6899018 | 16 grants awarded
$31,538
(≈ Similar)
$3,750
median grant
Marina Del Rey, CA
Same state
100%
Excellent match

EIN: 83-2657932 | 31 grants awarded
$31,564
(≈ Similar)
$4,000
median grant
El Segundo, CA
Same state
100%
Excellent match

EIN: 46-3050745 | 23 grants awarded
$31,073
(≈ Similar)
$2,094
median grant
Ridgecrest, CA
Same state
99%
Excellent match

EIN: 27-1553241 | 319 grants awarded
$31,895
(≈ Similar)
$2,000
median grant
Laguna Beach, CA
Same state
99%
Excellent match

Contact Information

Official contact details for August & Sylvia Sebastiani Foundation as registered with the IRS. These details are essential for grant applications, correspondence, and due diligence processes.

EIN 68-0386154
Website N/A
Address 32 PATTEN ST Sonoma, CA 95476-0000

Key People (3)

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

Trustee Don A Sebastiani Jr
Trustee August D Sebastiani
Trustee Emilia Sebastiani Coakley

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 August & Sylvia Sebastiani 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 February 2026 based on IRS Form 990-PF filings. Foundation information reflects most recent available tax year data.