Herbert R Mayer And Jeanne C Mayer Foundation

Agoura Hills, CA
Tax-exempt since Dec. 1996
EIN: 95-4589085

Receive an email when new data is available for this organization.

Type of Nonprofit

Designated as a 501(c)(3) 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 / Private Independent Foundations (NTEE)

Donations to this organization are tax deductible.

Revenue

$1.03M (2024)

Expenses

$2.6M (2024)

Total Assets

$35.1M (2024)

Total Liabilities

$11k (2024)

Source: Form 990 tax filings from 2011 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 July
2024

Revenue

$1,026,650

Expenses

$2,600,349

Net Income

-$1,573,699

Net Assets

$35,103,339

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$2,548	0.2%
Dividends	$865,373	84.3%
Sales of Assets	$158,541	15.4%
Other Income	$188	0.0%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,155,204	82.9%
Compensation of Officers*	$305,441	11.7%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$35,114,306
Total Liabilities	$10,967
Net Assets	$35,103,339

Compensation

Key Employees and Officers	Compensation	Other
Sarah J Kalter (President/Director)	$305,441	$48,000
Katelyn M Kalter (Treasurer/Director)	$0	$0
Eric Marton (Director)	$0	$0
Niel Widerschein (Director)	$0	$0
Brooke Cutler (Director)	$0	$0

+ View more people

990-PF

Filed on June 10, 2025

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

View Filing

Schedules ▼

XML

Fiscal Year Ending July
2023

Revenue

-$152,546

Expenses

$2,525,337

Net Income

-$2,677,883

Net Assets

$36,677,038

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$2,501
Dividends	$771,601
Sales of Assets	-$926,648
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,125,570	84.2%
Compensation of Officers*	$223,168	8.8%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$36,677,574
Total Liabilities	$536
Net Assets	$36,677,038

Compensation

Key Employees and Officers	Compensation	Other
Sarah J Kalter (President/Director)	$223,168	$0
Katelyn M Kalter (Treasurer/Director)	$0	$0
Eric Marton (Director)	$0	$0
Niel Widerschein (Director)	$0	$0
Brooke Cutler (Director)	$0	$0

+ View more people

990-PF

Filed on June 27, 2024

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

View Filing

Schedules ▼

XML

Fiscal Year Ending July
2022

Revenue

$1,634,513

Expenses

$2,974,497

Net Income

-$1,339,984

Net Assets

$39,354,921

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$227,769	13.9%
Interest Revenue	$137	0.0%
Dividends	$859,594	52.6%
Sales of Assets	$547,013	33.5%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,468,595	83.0%
Compensation of Officers*	$224,929	7.6%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$39,361,163
Total Liabilities	$6,242
Net Assets	$39,354,921

Compensation

Key Employees and Officers	Compensation	Other
Sarah J Kalter (President/Director)	$224,929	$37,000
Katelyn M Kalter (Treasurer/Director)	$0	$0
Eric Marton (Director)	$0	$0
Niel Widerschein (Director)	$0	$0
Brooke Cutler (Director)	$0	$0

+ View more people

990-PF

Filed on June 13, 2023

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending July
2021

Revenue

$4,465,405

Expenses

$3,003,609

Net Income

$1,461,796

Net Assets

$40,694,905

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$660	0.0%
Dividends	$928,125	20.8%
Sales of Assets	$3,536,620	79.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,515,911	83.8%
Compensation of Officers*	$212,378	7.1%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$40,737,544
Total Liabilities	$42,639
Net Assets	$40,694,905

Compensation

Key Employees and Officers	Compensation	Other
Sarah J Kalter (President/Director)	$212,378	$37,000
Katelyn M Kalter (Treasurer/Director)	$0	$0
Eric Marton (Director)	$0	$0
Niel Widerschein (Director)	$0	$0
Brooke Cutler (Director)	$0	$0

+ View more people

990-PF

Filed on Dec. 6, 2021

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

View Filing

Schedules ▼

XML

Fiscal Year Ending July
2020

Revenue

$4,826,108

Expenses

$2,420,370

Net Income

$2,405,738

Net Assets

$39,233,109

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$3,742,453	77.5%
Interest Revenue	$403,588	8.4%
Dividends	$249,518	5.2%
Sales of Assets	$430,549	8.9%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,162,807	89.4%
Compensation of Officers*	$222,548	9.2%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$39,241,180
Total Liabilities	$8,071
Net Assets	$39,233,109

Compensation

Key Employees and Officers	Compensation	Other
Sarah J Kalter (President/Director)	$222,548	$37,000
Katelyn M Kalter (Treasurer/Director)	$0	$0
Eric Marton (Director)	$0	$0
Niel Widerschein (Director)	$0	$0
Brooke Cutler (Director)	$0	$0

+ View more people

990-PF

Filed on June 9, 2021

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

View Filing

Schedules ▼

XML

Fiscal Year Ending July
2019

Revenue

$36,673,638

Expenses

$131,980

Net Income

$36,541,658

Net Assets

$36,827,371

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$35,899,570	97.9%
Interest Revenue	$99,277	0.3%
Dividends	$560,178	1.5%
Sales of Assets	$114,613	0.3%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$63,428	48.1%
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	$36,828,821
Total Liabilities	$1,450
Net Assets	$36,827,371

Compensation

Key Employees and Officers	Compensation	Other
Sarah J Kalter (President/Director)	$0	$0
Thomas Liguori (Treasurer/Director)	$0	$0
Irwin Helford (Director)	$0	$0
Niel Widerschein (Director)	$0	$0

+ View more people

990-PF

Filed on May 15, 2020

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending July
2018

Revenue

$10,654

Expenses

$49,390

Net Income

-$38,736

Net Assets

$285,713

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$408	3.8%
Dividends	$9,651	90.6%
Sales of Assets	$595	5.6%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$38,889	78.7%
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	$285,713
Total Liabilities	$0
Net Assets	$285,713

Compensation

Key Employees and Officers	Compensation	Other
Sarah J Kalter (President/Director)	$0	$0
Philip W Colburn (Director)	$0	$0
Donna M Brooks (Secretary)	$0	$0
Michael D Schwartz (Treasurer)	$0	$0
Thomas Liguori (Director)	$0	$0
Irwin Helford (Director)	$0	$0
Niel Widerschein (Director)	$0	$0

+ View more people

990-PF

Filed on Nov. 14, 2018

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending July
2017

Revenue

$25,398

Expenses

$42,872

Net Income

-$17,474

Net Assets

$324,449

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$830	3.3%
Interest Revenue	$162	0.6%
Dividends	$11,046	43.5%
Sales of Assets	$13,360	52.6%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$34,000	79.3%
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	$324,449
Total Liabilities	$0
Net Assets	$324,449

Compensation

Key Employees and Officers	Compensation	Other
Herbert R Mayer (President/Dir)	$0	$0
Sarah J Kalter (Director)	$0	$0

990-PF

Filed on Jan. 8, 2018

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

View Filing

Schedules ▼

XML

Fiscal Year Ending July
2016

Revenue

$18,893

Expenses

$48,556

Net Income

-$29,663

Net Assets

$341,923

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$4,095	21.7%
Interest Revenue	$13	0.1%
Dividends	$9,834	52.1%
Sales of Assets	$4,951	26.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$38,000	78.3%
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	$341,923
Total Liabilities	$0
Net Assets	$341,923

Compensation

Key Employees and Officers	Compensation	Other
Herbert R Mayer (President/Dir)	$0	$0

990-PF

Filed on Nov. 7, 2016

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending July
2015

Revenue

$8,707

Expenses

$9,646

Net Income

-$939

Net Assets

$371,586

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$8	0.1%
Dividends	$11,314	> 100%
Sales of Assets	-$2,615
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$900	9.3%
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	$371,586
Total Liabilities	$0
Net Assets	$371,586

Compensation

Key Employees and Officers	Compensation	Other
Herbert R Mayer (President/Dir)	$0	$0

990-PF

Filed on Jan. 13, 2016

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending July
2014

Revenue

$10,174

Expenses

$22,213

Net Income

-$12,039

Net Assets

$372,525

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$7	0.1%
Dividends	$10,167	99.9%
Sales of Assets	$0
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$12,800	57.6%
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	$372,525
Total Liabilities	$0
Net Assets	$372,525

Compensation

Key Employees and Officers	Compensation	Other
Herbert R Mayer (President/Dir)	$0	$0

990-PF

Filed on Dec. 1, 2014

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending July
2013

Revenue

-$30,201

Expenses

$27,869

Net Income

-$58,070

Net Assets

$384,563

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$12
Dividends	$9,553
Sales of Assets	$0
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$16,100	57.8%
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	$384,564
Total Liabilities	$1
Net Assets	$384,563

990-PF

Filed on March 5, 2014

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending July
2012

Revenue

$7,896

Expenses

$43,441

Net Income

-$35,545

Net Assets

$442,633

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$41	0.5%
Dividends	$7,794	98.7%
Sales of Assets	$61	0.8%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$33,435	77.0%
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	$442,634
Total Liabilities	$1
Net Assets	$442,633

990-PF

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

PDF

Fiscal Year Ending July
2011

Revenue

$9,732

Expenses

$37,473

Net Income

-$27,741

Net Assets

$478,179

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$258	2.7%
Dividends	$9,287	95.4%
Sales of Assets	$187	1.9%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$29,875	79.7%
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	$478,179
Total Liabilities	$0
Net Assets	$478,179

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.

API

The data powering this website is available programmatically, via an API. Read the API documentation »

See an issue with the data?

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.

Updated September 25, 2025

Herbert R Mayer And Jeanne C Mayer Foundation

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $1.03M (2024)

Expenses $2.6M (2024)

Total Assets $35.1M (2024)

Total Liabilities $11k (2024)

Tax Filings by Year

Fiscal Year Ending July 2024

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2023

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2018

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2017

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2016

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending July 2013

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Revenue

$1.03M (2024)

Expenses

$2.6M (2024)

Total Assets

$35.1M (2024)

Total Liabilities

$11k (2024)

Fiscal Year Ending July
2024

Fiscal Year Ending July
2023

Fiscal Year Ending July
2022

Fiscal Year Ending July
2021

Fiscal Year Ending July
2020

Fiscal Year Ending July
2019

Fiscal Year Ending July
2018

Fiscal Year Ending July
2017

Fiscal Year Ending July
2016

Fiscal Year Ending July
2015

Fiscal Year Ending July
2014

Fiscal Year Ending July
2013

Fiscal Year Ending July
2012

Fiscal Year Ending July
2011

Fiscal Year Ending July
2010

Fiscal Year Ending July
2009

Fiscal Year Ending July
2008

Fiscal Year Ending July
2007

Fiscal Year Ending July
2006

Fiscal Year Ending July
2005

Fiscal Year Ending July
2004

Fiscal Year Ending July
2003

Fiscal Year Ending July
2002

Fiscal Year Ending July
2001