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Guestrin Family Foundation

  • Stanford, CA
  • Tax-exempt since May 2018
  • EIN: 82-3353232

Organization summary

Type of Nonprofit

Designated as a Organizations for any of the following purposes: religious, educational, charitable, scientific, literary, testing for public safety, fostering national or international amateur sports competition (as long as it doesn't provide athletic facilities or equipment), or the prevention of cruelty to children or animals.

Category: Philanthropy, Voluntarism and Grantmaking Foundations / Fund Raising and/or Fund Distribution (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$132k (2024)

Expenses
$333k (2024)

Total Assets
$4.18M (2024)

Total Liabilities
$0 (2024)

Source: Form 990 tax filings from 2018 to 2024

Tax Filings by Year

Form 990 is an information return that most organizations claiming federal tax-exempt status must file yearly with the IRS. Nonprofit Explorer has IRS digitized Form 990 data for filings processed in 2012 and later. If this organization filed an amended return, it may not be reflected below. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Form 990 data is from the IRS.

Fiscal Year Ending Dec.
2024

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$131,812
Expenses
$333,127
Net Income
-$201,315
Net Assets
$4,179,818
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $131,812
100%
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $312,355
93.8%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $4,179,818
Total Liabilities $0
Net Assets $4,179,818
Compensation
Key Employees and Officers Compensation Other
Emily Fox (Vice Preside) $0 $0
Carlos Guestrin (President/Tr) $0 $0

Document Links

990-PF
Filed on Nov. 17, 2025

Primary tax return for a private foundation's activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2023

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$116,623
Expenses
$300,377
Net Income
-$183,754
Net Assets
$4,127,229
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $116,623
100%
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $282,394
94.0%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $4,127,229
Total Liabilities $0
Net Assets $4,127,229
Compensation
Key Employees and Officers Compensation Other
Emily Fox (Vice President/Secretary) $0 $0
Carlos Guestrin (President/Treasurer) $0 $0

Document Links

990-PF
Filed on Nov. 13, 2024

Primary tax return for a private foundation's activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$93,092
Expenses
$132,707
Net Income
-$39,615
Net Assets
$4,091,622
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $92,817
99.7%
Sales of Assets $275
0.3%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $114,619
86.4%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $4,091,622
Total Liabilities $0
Net Assets $4,091,622
Compensation
Key Employees and Officers Compensation Other
Emily Fox (Vice President/Secretary) $0 $0
Carlos Guestrin (President/Treasurer) $0 $0

Document Links

990-PF
Filed on May 30, 2023

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$97,091
Expenses
$189,708
Net Income
-$92,617
Net Assets
$4,049,827
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $90,191
92.9%
Sales of Assets $6,900
7.1%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $171,702
90.5%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $4,049,827
Total Liabilities $0
Net Assets $4,049,827
Compensation
Key Employees and Officers Compensation Other
Emily Fox (Vice President/Secretary) $0 $0
Carlos Guestrin (President/Treasurer) $0 $0

Document Links

990-PF
Filed on Nov. 8, 2022

Primary tax return for a private foundation's activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$1,806,909
Expenses
$188,384
Net Income
$1,618,525
Net Assets
$4,014,407
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,598,220
88.5%
Interest Revenue $0
Dividends $70,777
3.9%
Sales of Assets $135,927
7.5%
Other Income $1,985
0.1%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $173,716
92.2%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $4,014,408
Total Liabilities $1
Net Assets $4,014,407
Compensation
Key Employees and Officers Compensation Other
Emily Fox (President/Treasurer) $0 $0
Carlos Guestrin (Vice President/Secretary) $0 $0

Document Links

990-PF
Filed on Nov. 8, 2021

Primary tax return for a private foundation's activities, finances, and governance

View Filing
XML

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$2,160,214
Expenses
$73,750
Net Income
$2,086,464
Net Assets
$3,499,631
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $997,386
46.2%
Interest Revenue $0
Dividends $75,089
3.5%
Sales of Assets $1,087,739
50.4%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $32,991
44.7%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $3,533,141
Total Liabilities $33,510
Net Assets $3,499,631
Compensation
Key Employees and Officers Compensation Other
Emily Fox (President/Treasurer) $0 $0
Carlos Guestrin (Vice President/Secretary) $0 $0

Document Links

990-PF
Filed on July 10, 2020

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$1,248,184
Expenses
$83,597
Net Income
$1,164,587
Net Assets
$1,413,167
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,212,864
97.2%
Interest Revenue $0
Dividends $17,039
1.4%
Sales of Assets $18,281
1.5%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $83,238
99.6%
Compensation of Officers* $0
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.
Assets/Debt
Total Assets $1,413,501
Total Liabilities $334
Net Assets $1,413,167
Compensation
Key Employees and Officers Compensation Other
Emily Fox (President/Treasurer) $0 $0
Carlos Guestrin (Vice President/Secretary) $0 $0

Document Links

990-PF
Filed on June 13, 2019

Primary tax return for a private foundation's activities, finances, and governance

View Filing
PDF XML

Fiscal Year Ending Dec.
2017

No Extracted Financial Data

Extracted financial data is not available for the forms filed in this tax period, but Form 990 documents are available for download.

Document Links

990-PF

Primary tax return for a private foundation's activities, finances, and governance

PDF

About This Data

What Is This Data?

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

The summary data contains information processed by the IRS during the 2012-2019 calendar years; this generally consists of filings for the 2011-2018 fiscal years, but may include older records. This data release includes only a subset of what can be found in the full Form 990s.

In addition to the raw summary data, we link to PDFs and digital copies of full Form 990 documents wherever possible. This consists of separate releases by the IRS of Form 990 documents processed by the agency, which we update regularly.

We also link to copies of audits nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year since 2016. These audits are copied from the Federal Audit Clearinghouse.

Which Organizations Are Here?

Every organization that has been recognized as tax exempt by the IRS has to file Form 990 every year, unless they make less than $200,000 in revenue and have less than $500,000 in assets, in which case they have to file form 990-EZ. Organizations making less than $50,000 don’t have to file either form but do have to let the IRS they’re still in business via a Form 990N "e-Postcard."

Nonprofit Explorer has organizations claiming tax exemption in each of the 27 subsections of the 501(c) section of the tax code, and which have filed a Form 990, Form 990EZ or Form 990PF. Taxable trusts and private foundations that are required to file a form 990PF are also included. Small organizations filing a Form 990N "e-Postcard" are not included in this data.

Types of Nonprofits

There are 27 nonprofit designations based on the numbered subsections of section 501(c) of the tax code. See the list »

Get the Data

For those interested in acquiring the original data from the source, here’s where our data comes from:

  • Raw filing data. Includes EINs and summary financials as structured data.
  • Exempt Organization profiles. Includes organization names, addresses, etc. You can merge this with the raw filing data using EIN numbers.
  • Form 990 documents. Prior to 2017, these documents were obtained and processed by Public.Resource.org and ProPublica. Bulk PDF downloads since 2017 are available from the IRS.
  • Form 990 documents as XML files. Includes complete filing data (financial details, names of officers, tax schedules, etc.) in machine-readable format. Only available for electronically filed documents. Electronic data released prior to October 2021 is also available through Amazon Web Services.
  • Audits. PDFs of single or program-specific audits for nonprofit organizations that spent $750,000 or more in Federal grant money in a single fiscal year. Available for fiscal year 2015 and later.

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About Nonprofit Explorer

Nonprofit Explorer

Browse millions of annual returns filed by tax-exempt organizations with ProPublica’s Nonprofit Explorer. See details like executive compensation, revenue, expenses and more. Search for an organization or a person, or search the full text of filings.

By Andrea Suozzo, Alec Glassford, Ash Ngu and Brandon Roberts.

Design by Jeff Frankl. Additional development by Ken Schwencke, Mike Tigas, and Sisi Wei.

E-file viewer adapted from IRS e-File Viewer by Ben Getson. Code for scraping audit documents adapated from Govwiki.

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