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William T And Margaret R Clark Charitable Foundation

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 Grantmaking Foundations (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$139k (2025)

Expenses
$31.1k (2025)

Total Assets
$379k (2025)

Total Liabilities
$0 (2025)

Source: Form 990 tax filings from 2011 to 2025

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.
2025

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$139,383
Expenses
$31,104
Net Income
$108,279
Net Assets
$378,787
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $93,200
66.9%
Interest Revenue $0
Dividends $17,033
12.2%
Sales of Assets $29,150
20.9%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $28,500
91.6%
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 $378,787
Total Liabilities $0
Net Assets $378,787
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2024

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$17,086
Expenses
$29,016
Net Income
-$11,930
Net Assets
$269,674
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,250
7.3%
Interest Revenue $0
Dividends $14,305
83.7%
Sales of Assets $1,531
9.0%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $27,300
94.1%
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 $269,674
Total Liabilities $0
Net Assets $269,674
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2023

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$16,475
Expenses
$30,357
Net Income
-$13,882
Net Assets
$280,815
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $2,000
12.1%
Interest Revenue $0
Dividends $13,884
84.3%
Sales of Assets $591
3.6%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $28,500
93.9%
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 $280,815
Total Liabilities $0
Net Assets $280,815
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$13,021
Expenses
$31,040
Net Income
-$18,019
Net Assets
$294,699
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,000
7.7%
Interest Revenue $0
Dividends $11,872
91.2%
Sales of Assets $149
1.1%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $30,056
96.8%
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 $294,699
Total Liabilities $0
Net Assets $294,699
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$16,485
Expenses
$30,735
Net Income
-$14,250
Net Assets
$315,218
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,000
6.1%
Interest Revenue $7
0.0%
Dividends $12,646
76.7%
Sales of Assets $2,832
17.2%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $30,000
97.6%
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 $315,218
Total Liabilities $0
Net Assets $315,218
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$12,212
Expenses
$24,099
Net Income
-$11,887
Net Assets
$328,243
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,000
8.2%
Interest Revenue $982
8.0%
Dividends $10,220
83.7%
Sales of Assets $10
0.1%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $24,024
99.7%
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 $328,244
Total Liabilities $1
Net Assets $328,243
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$25,517
Expenses
$31,866
Net Income
-$6,349
Net Assets
$338,649
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $14,822
58.1%
Sales of Assets $10,695
41.9%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $25,625
80.4%
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 $338,650
Total Liabilities $1
Net Assets $338,649
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$25,283
Expenses
$29,992
Net Income
-$4,709
Net Assets
$344,876
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,000
4.0%
Interest Revenue $0
Dividends $14,708
58.2%
Sales of Assets $9,575
37.9%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $24,635
82.1%
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 $344,876
Total Liabilities $0
Net Assets $344,876
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$18,956
Expenses
$28,623
Net Income
-$9,667
Net Assets
$349,793
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $1,000
5.3%
Interest Revenue $0
Dividends $12,962
68.4%
Sales of Assets $4,994
26.3%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $22,305
77.9%
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 $349,793
Total Liabilities $0
Net Assets $349,793
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$18,741
Expenses
$29,864
Net Income
-$11,123
Net Assets
$358,499
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $13,768
73.5%
Sales of Assets $4,973
26.5%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $24,325
81.5%
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 $358,499
Total Liabilities $0
Net Assets $358,499
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Aardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$15,819
Expenses
$29,405
Net Income
-$13,586
Net Assets
$370,028
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $14,254
90.1%
Sales of Assets $1,565
9.9%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $24,338
82.8%
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 $370,028
Total Liabilities $0
Net Assets $370,028
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Ardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$23,163
Expenses
$29,682
Net Income
-$6,519
Net Assets
$383,603
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $16,077
69.4%
Sales of Assets $7,086
30.6%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $24,275
81.8%
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 $383,603
Total Liabilities $0
Net Assets $383,603
Compensation
Key Employees and Officers Compensation Other
Thomas R Clark (Trustee) $0 $0
Mary Ann Ardema (Trustee) $0 $0

Document Links

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$20,033
Expenses
$27,393
Net Income
-$7,360
Net Assets
$390,867
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $15,605
77.9%
Sales of Assets $4,428
22.1%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $22,875
83.5%
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 $390,867
Total Liabilities $0
Net Assets $390,867

Document Links

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$15,783
Expenses
$27,528
Net Income
-$11,745
Net Assets
$401,715
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $14,003
88.7%
Sales of Assets $1,780
11.3%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $22,375
81.3%
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 $401,715
Total Liabilities $0
Net Assets $401,715

Document Links

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from Form 990-PF
Revenue
$25,495
Expenses
$28,221
Net Income
-$2,726
Net Assets
$413,457
Notable Sources of Revenue Percent of Total Revenue
Contributions Received $0
Interest Revenue $0
Dividends $12,672
49.7%
Sales of Assets $12,823
50.3%
Other Income $0
Notable Expenses Percent of Total Expenses
Charitable Disbursements $23,650
83.8%
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 $413,457
Total Liabilities $0
Net Assets $413,457

Document Links

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

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

Fiscal Year Ending Dec.
2008

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

Fiscal Year Ending Dec.
2007

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

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

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

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

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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  • 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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