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Marshall Mathers Foundation

  • Encino, CA
  • Tax-exempt since May 2003
  • EIN: 01-0706738

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 / Private Independent Foundations (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$207k (2022)

Expenses
$226k (2022)

Total Assets
$206k (2022)

Total Liabilities
$0 (2022)

Source: Form 990 tax filings from 2011 to 2022

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.
2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$207,019
Expenses
$225,705
Net Income
-$18,686
Net Assets
$205,533
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $205,718
99.4%
Interest Revenue $0
Dividends $1,301
0.6%
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $225,495
99.9%
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 $205,533
Total Liabilities $0
Net Assets $205,533
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Michael Oppenheim (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 16, 2023

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

View Filing
XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$174,073
Expenses
$231,338
Net Income
-$57,265
Net Assets
$289,841
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $172,660
99.2%
Interest Revenue $2
0.0%
Dividends $1,411
0.8%
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $230,818
99.8%
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 $289,841
Total Liabilities $0
Net Assets $289,841
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Michael Oppenheim (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 15, 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
$1,515,493
Expenses
$1,367,876
Net Income
$147,617
Net Assets
$291,885
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,514,671
99.9%
Interest Revenue $2
0.0%
Dividends $820
0.1%
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $1,345,874
98.4%
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 $291,886
Total Liabilities $1
Net Assets $291,885
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Michael Oppenheim (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 16, 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
$151,276
Expenses
$194,936
Net Income
-$43,660
Net Assets
$71,255
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $151,276
100%
Interest Revenue $0
Dividends $0
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $194,936
100%
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 $71,256
Total Liabilities $1
Net Assets $71,255
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Michael Oppenheim (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 17, 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
$245,890
Expenses
$174,181
Net Income
$71,709
Net Assets
$114,916
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $241,390
98.2%
Interest Revenue $0
Dividends $0
Sales of Assets $0
Other Income $4,500
1.8%
Notable Expenses Percent of Total Expenses
Charitable Disbursements $174,181
100%
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 $114,916
Total Liabilities $0
Net Assets $114,916
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Michael Oppenheim (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 15, 2019

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$584,590
Expenses
$585,153
Net Income
-$563
Net Assets
$43,207
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $584,590
100%
Interest Revenue $0
Dividends $0
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $580,985
99.3%
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 $43,207
Total Liabilities $0
Net Assets $43,207
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Bruce Sekendorf (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 15, 2018

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$160,053
Expenses
$163,671
Net Income
-$3,618
Net Assets
$43,770
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $160,053
100%
Interest Revenue $0
Dividends $0
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $163,333
99.8%
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 $43,770
Total Liabilities $0
Net Assets $43,770
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Bruce Sekendorf (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 8, 2017

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$185,879
Expenses
$184,709
Net Income
$1,170
Net Assets
$47,388
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $185,879
100%
Interest Revenue $0
Dividends $0
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $154,332
83.6%
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 $47,388
Total Liabilities $0
Net Assets $47,388
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Bruce Sekendorf (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 15, 2016

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$152,279
Expenses
$156,483
Net Income
-$4,204
Net Assets
$46,218
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $152,243
100.0%
Interest Revenue $36
0.0%
Dividends $0
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $156,333
99.9%
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 $46,218
Total Liabilities $0
Net Assets $46,218
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Bruce Sekendorf (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 11, 2015

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$186,572
Expenses
$166,100
Net Income
$20,472
Net Assets
$50,422
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $186,486
100.0%
Interest Revenue $86
0.0%
Dividends $0
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $165,085
99.4%
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 $50,422
Total Liabilities $0
Net Assets $50,422
Compensation
Key Employees and Officers Compensation Other
Marshall B Mathers Iii (President) $0 $0
Paul Rosenberg (Vice President) $0 $0
Howard Hertz (Secretary) $0 $0
Bruce Sekendorf (Treasurer) $0 $0
+ View more people

Document Links

990-PF
Filed on Nov. 14, 2014

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$102,377
Expenses
$107,130
Net Income
-$4,753
Net Assets
$29,949
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $102,227
99.9%
Interest Revenue $150
0.1%
Dividends $0
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $106,950
99.8%
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 $29,950
Total Liabilities $1
Net Assets $29,949

Document Links

990-PF

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

PDF

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$289,179
Expenses
$264,689
Net Income
$24,490
Net Assets
$34,702
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $289,003
99.9%
Interest Revenue $176
0.1%
Dividends $0
Sales of Assets $0
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $264,619
100.0%
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 $34,703
Total Liabilities $1
Net Assets $34,702

Document Links

990-PF

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

PDF

Fiscal Year Ending Dec.
2010

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

Fiscal Year Ending Dec.
2009

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

Fiscal Year Ending Dec.
2006

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

Fiscal Year Ending Dec.
2005

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

Fiscal Year Ending Dec.
2004

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

Fiscal Year Ending Dec.
2003

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

Fiscal Year Ending Dec.
2002

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

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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Byline

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