George Henry Mayr Foundation

Saint Louis, MO
Tax-exempt since June 1951
EIN: 95-6062009

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.

Donations to this organization are tax deductible.

Revenue

$1.3M (2024)

Expenses

$1.72M (2024)

Total Assets

$25.1M (2024)

Total Liabilities

$0 (2024)

Years with missing data

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 Dec.
2024

Revenue

$1,298,351

Expenses

$1,723,145

Net Income

-$424,794

Net Assets

$25,083,066

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$796,276	61.3%
Sales of Assets	$489,611	37.7%
Other Income	$12,464	1.0%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,541,858	89.5%
Compensation of Officers*	$311,495	18.1%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$25,083,066
Total Liabilities	$0
Net Assets	$25,083,066

Compensation

Key Employees and Officers	Compensation	Other
Wells Fargo Bank N A (Trustee)	$179,699	$0
Natalie O'connor (Director)	$68,196	$0
Catherine Grier Olson (Director)	$63,600	$0
Patrick Haden (Board Advisor)	$0	$0

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990-PF

Filed on July 8, 2025

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Dec.
2023

Revenue

$1,399,075

Expenses

$1,754,215

Net Income

-$355,140

Net Assets

$25,511,706

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$675,173	48.3%
Sales of Assets	$757,202	54.1%
Other Income	-$33,300

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,569,951	89.5%
Compensation of Officers*	$300,624	17.1%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$25,511,706
Total Liabilities	$0
Net Assets	$25,511,706

Compensation

Key Employees and Officers	Compensation	Other
Wells Fargo Bank N A (Trustee)	$168,659	$0
Natalie O'connor (Director)	$68,365	$0
Catherine Grier Olson (Director)	$63,600	$0
Patrick Haden (Board Advisor)	$0	$0

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990-PF

Filed on May 8, 2024

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2022

Revenue

$877,632

Expenses

$1,820,736

Net Income

-$943,104

Net Assets

$25,598,248

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$634,700	72.3%
Sales of Assets	$115,383	13.1%
Other Income	$127,549	14.5%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,657,349	91.0%
Compensation of Officers*	$306,437	16.8%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$25,598,248
Total Liabilities	$0
Net Assets	$25,598,248

Compensation

Key Employees and Officers	Compensation	Other
Wells Fargo Bank N A (Trustee)	$173,804	$0
Natalie O'connor (Director)	$68,358	$0
Catherine Grier Olson (Director)	$64,275	$0
Patrick Haden (Board Advisor)	$0	$0

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990-PF

Filed on July 17, 2023

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2021

Revenue

$3,555,196

Expenses

$1,588,803

Net Income

$1,966,393

Net Assets

$26,534,481

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$647,525	18.2%
Sales of Assets	$2,844,379	80.0%
Other Income	$63,292	1.8%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,381,599	87.0%
Compensation of Officers*	$317,917	20.0%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$26,534,481
Total Liabilities	$0
Net Assets	$26,534,481

Compensation

Key Employees and Officers	Compensation	Other
Wells Fargo Bank N A (Trustee)	$186,121	$0
Natalie O'connor (Director)	$68,196	$0
Catherine Grier Olson (Director)	$63,600	$0
Patrick Haden (Board Advisor)	$0	$0

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990-PF

Filed on Nov. 9, 2022

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2020

Revenue

$2,925,908

Expenses

$1,394,198

Net Income

$1,531,710

Net Assets

$24,550,066

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$642,153	21.9%
Sales of Assets	$2,280,604	77.9%
Other Income	$3,151	0.1%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,207,711	86.6%
Compensation of Officers*	$303,018	21.7%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$24,550,067
Total Liabilities	$1
Net Assets	$24,550,066

Compensation

Key Employees and Officers	Compensation	Other
Wells Fargo Bank N A (Trustee)	$169,207	$0
Natalie O'connor (Director)	$68,357	$0
Catherine Grier Olson (Director)	$65,454	$0
Patrick Haden (Board Advisor)	$0	$0

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990-PF

Filed on Nov. 11, 2021

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2019

Revenue

$2,393,493

Expenses

$1,189,480

Net Income

$1,204,013

Net Assets

$23,005,220

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$709,255	29.6%
Sales of Assets	$1,681,656	70.3%
Other Income	$2,582	0.1%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$973,477	81.8%
Compensation of Officers*	$298,111	25.1%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$23,005,220
Total Liabilities	$0
Net Assets	$23,005,220

990-PF

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

PDF

Fiscal Year Ending Dec.
2018

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

990-PF

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

PDF

PDF (2 of 3) PDF (3 of 3)

Fiscal Year Ending Dec.
2017

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2016

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2015

Revenue

$1,387,641

Expenses

$1,436,767

Net Income

-$49,126

Net Assets

$19,240,637

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$513,685	37.0%
Sales of Assets	$871,625	62.8%
Other Income	$2,331	0.2%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,188,860	82.7%
Compensation of Officers*	$411,496	28.6%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$19,240,637
Total Liabilities	$0
Net Assets	$19,240,637

990-PF

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

PDF

Fiscal Year Ending Dec.
2014

Revenue

$3,692,037

Expenses

$1,095,569

Net Income

$2,596,468

Net Assets

$19,309,291

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$535,782	14.5%
Sales of Assets	$3,151,336	85.4%
Other Income	$4,919	0.1%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$948,328	86.6%
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	$19,309,291
Total Liabilities	$0
Net Assets	$19,309,291

990-PF

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

PDF

PDF (2 of 3) PDF (3 of 3)

Fiscal Year Ending Dec.
2013

Revenue

$851,630

Expenses

$1,239,215

Net Income

-$387,585

Net Assets

$16,717,673

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$555,450	65.2%
Sales of Assets	$290,441	34.1%
Other Income	$5,739	0.7%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$912,988	73.7%
Compensation of Officers*	$329,958	26.6%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$16,717,673
Total Liabilities	$0
Net Assets	$16,717,673

990-PF

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

PDF

PDF (2 of 3) PDF (3 of 3)

Fiscal Year Ending Dec.
2012

Revenue

$861,192

Expenses

$1,239,910

Net Income

-$378,718

Net Assets

$17,018,031

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$610,998	70.9%
Sales of Assets	$239,683	27.8%
Other Income	$10,511	1.2%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$924,064	74.5%
Compensation of Officers*	$317,374	25.6%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$17,018,031
Total Liabilities	$0
Net Assets	$17,018,031

990-PF

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

PDF

PDF (2 of 2)

Fiscal Year Ending Dec.
2011

Revenue

$846,864

Expenses

$1,343,525

Net Income

-$496,661

Net Assets

$17,364,022

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$558,271	65.9%
Sales of Assets	$272,803	32.2%
Other Income	$15,790	1.9%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$985,058	73.3%
Compensation of Officers*	$396,524	29.5%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$17,364,022
Total Liabilities	$0
Net Assets	$17,364,022

990-PF

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

PDF

Fiscal Year Ending Dec.
2010

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2009

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2008

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2007

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2006

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2005

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2004

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2003

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2002

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

990-PF

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

PDF

Fiscal Year Ending Dec.
2001

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

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.

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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 »

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Raw filing data. Includes EINs and summary financials as structured data.
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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.
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Updated December 22, 2025

George Henry Mayr Foundation

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $1.3M (2024)

Expenses $1.72M (2024)

Total Assets $25.1M (2024)

Total Liabilities $0 (2024)

Tax Filings by Year

Fiscal Year Ending Dec. 2024

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2023

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending Dec. 2018

No Extracted Financial Data

Document Links

990-PF

Fiscal Year Ending Dec. 2017

No Extracted Financial Data

Document Links

990-PF

Fiscal Year Ending Dec. 2016

No Extracted Financial Data

Document Links

990-PF

Fiscal Year Ending Dec. 2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending Dec. 2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending Dec. 2013

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending Dec. 2012

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending Dec. 2011

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

Revenue

$1.3M (2024)

Expenses

$1.72M (2024)

Total Assets

$25.1M (2024)

Total Liabilities

$0 (2024)

Fiscal Year Ending Dec.
2024

Fiscal Year Ending Dec.
2023

Fiscal Year Ending Dec.
2022

Fiscal Year Ending Dec.
2021

Fiscal Year Ending Dec.
2020

Fiscal Year Ending Dec.
2019

Fiscal Year Ending Dec.
2018

Fiscal Year Ending Dec.
2017

Fiscal Year Ending Dec.
2016

Fiscal Year Ending Dec.
2015

Fiscal Year Ending Dec.
2014

Fiscal Year Ending Dec.
2013

Fiscal Year Ending Dec.
2012

Fiscal Year Ending Dec.
2011

Fiscal Year Ending Dec.
2010

Fiscal Year Ending Dec.
2009

Fiscal Year Ending Dec.
2008

Fiscal Year Ending Dec.
2007

Fiscal Year Ending Dec.
2006

Fiscal Year Ending Dec.
2005

Fiscal Year Ending Dec.
2004

Fiscal Year Ending Dec.
2003

Fiscal Year Ending Dec.
2002

Fiscal Year Ending Dec.
2001