Wilhemina C Oconnor Tr

Chicago, IL
Tax-exempt since Dec. 1970
EIN: 16-6024303

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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

$204k (2025)

Expenses

$318k (2025)

Total Assets

$3.76M (2025)

Total Liabilities

$0 (2025)

Years with missing data

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 Aug.
2025

Revenue

$204,297

Expenses

$318,153

Net Income

-$113,856

Net Assets

$3,760,373

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$177,187	86.7%
Sales of Assets	$27,110	13.3%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$276,674	87.0%
Compensation of Officers*	$61,254	19.3%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$3,760,373
Total Liabilities	$0
Net Assets	$3,760,373

Compensation

Key Employees and Officers	Compensation	Other
Jp Morgan Chase Bank Na (Trustee)	$61,254	$0

990-PF

Filed on Jan. 12, 2026

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Aug.
2024

Revenue

$207,218

Expenses

$291,107

Net Income

-$83,889

Net Assets

$3,874,226

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$142,622	68.8%
Sales of Assets	$64,596	31.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$249,129	85.6%
Compensation of Officers*	$55,590	19.1%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$3,874,226
Total Liabilities	$0
Net Assets	$3,874,226

Compensation

Key Employees and Officers	Compensation	Other
Jp Morgan Chase Bank Na (Trustee)	$55,590	$0

990-PF

Filed on Dec. 20, 2024

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Aug.
2023

Revenue

$248,816

Expenses

$311,877

Net Income

-$63,061

Net Assets

$3,960,279

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$138,804	55.8%
Sales of Assets	$110,012	44.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$274,405	88.0%
Compensation of Officers*	$50,978	16.3%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$3,960,279
Total Liabilities	$0
Net Assets	$3,960,279

Compensation

Key Employees and Officers	Compensation	Other
Jp Morgan Chase Bank Na (Trustee)	$50,978	$0

990-PF

Filed on Jan. 16, 2024

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Aug.
2022

Revenue

$231,048

Expenses

$314,789

Net Income

-$83,741

Net Assets

$4,023,340

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$174,054	75.3%
Sales of Assets	$56,992	24.7%
Other Income	$2	0.0%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$268,812	85.4%
Compensation of Officers*	$56,859	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	$4,023,340
Total Liabilities	$0
Net Assets	$4,023,340

Compensation

Key Employees and Officers	Compensation	Other
Jp Morgan Chase Bank Na (Trustee)	$56,859	$0

990-PF

Filed on Jan. 12, 2023

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Aug.
2021

Revenue

$320,476

Expenses

$277,382

Net Income

$43,094

Net Assets

$4,107,111

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$105,452	32.9%
Sales of Assets	$215,024	67.1%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$239,897	86.5%
Compensation of Officers*	$54,654	19.7%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$4,107,111
Total Liabilities	$0
Net Assets	$4,107,111

Compensation

Key Employees and Officers	Compensation	Other
Jp Morgan Chase Bank Na (Trustee)	$54,654	$0

990-PF

Filed on Jan. 10, 2022

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Aug.
2020

Revenue

$181,962

Expenses

$269,538

Net Income

-$87,576

Net Assets

$4,064,014

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$118,255	65.0%
Sales of Assets	$63,707	35.0%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$232,281	86.2%
Compensation of Officers*	$50,164	18.6%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$4,064,015
Total Liabilities	$1
Net Assets	$4,064,014

Compensation

Key Employees and Officers	Compensation	Other
Jp Morgan Chase Bank Na (Trustee)	$50,164	$0

990-PF

Filed on Dec. 3, 2020

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Aug.
2019

Revenue

$297,198

Expenses

$275,784

Net Income

$21,414

Net Assets

$4,151,594

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$117,546	39.6%
Sales of Assets	$179,652	60.4%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$241,785	87.7%
Compensation of Officers*	$50,718	18.4%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$4,151,594
Total Liabilities	$0
Net Assets	$4,151,594

990-PF

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

PDF

Fiscal Year Ending Aug.
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

Fiscal Year Ending Aug.
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 Aug.
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 Aug.
2015

Revenue

$189,677

Expenses

$238,300

Net Income

-$48,623

Net Assets

$4,261,885

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$106,533	56.2%
Sales of Assets	$83,144	43.8%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$189,331	79.5%
Compensation of Officers*	$59,273	24.9%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$4,261,885
Total Liabilities	$0
Net Assets	$4,261,885

990-PF

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

PDF

Fiscal Year Ending Aug.
2014

Revenue

$230,486

Expenses

$165,405

Net Income

$65,081

Net Assets

$4,310,569

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$90,616	39.3%
Sales of Assets	$139,870	60.7%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$118,170	71.4%
Compensation of Officers*	$55,691	33.7%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$4,310,569
Total Liabilities	$0
Net Assets	$4,310,569

990-PF

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

PDF

Fiscal Year Ending Aug.
2013

Revenue

$372,814

Expenses

$152,157

Net Income

$220,657

Net Assets

$4,247,530

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$0
Program Services	$0
Investment Income	$88,750	23.8%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$284,064	76.2%
Net Inventory Sales	$0
Other Revenue	$0

Notable Expenses		Percent of Total Expenses
Executive Compensation	$47,342	31.1%
Professional Fundraising Fees	$0
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$4,247,530
Total Liabilities	$0
Net Assets	$4,247,530

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2012

Revenue

$74,640

Expenses

$154,398

Net Income

-$79,758

Net Assets

$4,026,062

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$0
Program Services	$0
Investment Income	$105,553	> 100%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	-$30,913
Net Inventory Sales	$0
Other Revenue	$0

Notable Expenses		Percent of Total Expenses
Executive Compensation	$39,348	25.5%
Professional Fundraising Fees	$0
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$4,026,062
Total Liabilities	$0
Net Assets	$4,026,062

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2011

Revenue

$345,899

Expenses

$158,074

Net Income

$187,825

Net Assets

$4,105,680

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$0
Program Services	$0
Investment Income	$103,766	30.0%
Bond Proceeds	$0
Royalties	$0
Rental Property Income	$0
Net Fundraising	$0
Sales of Assets	$242,133	70.0%
Net Inventory Sales	$0
Other Revenue	$0

Notable Expenses		Percent of Total Expenses
Executive Compensation	$39,175	24.8%
Professional Fundraising Fees	$0
Other Salaries and Wages	$0

Assets/Debt
Total Assets	$4,105,680
Total Liabilities	$0
Net Assets	$4,105,680

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2010

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2009

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

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

Fiscal Year Ending Aug.
2008

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2007

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2006

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2005

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2004

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2003

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2002

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

990

Primary tax return for a nonprofit’s activities, finances, and governance

PDF

Fiscal Year Ending Aug.
2001

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

990

Primary tax return for a nonprofit’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 »

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

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Updated March 23, 2026

Wilhemina C Oconnor Tr

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $204k (2025)

Expenses $318k (2025)

Total Assets $3.76M (2025)

Total Liabilities $0 (2025)

Tax Filings by Year

Fiscal Year Ending Aug. 2025

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Aug. 2024

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Aug. 2023

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Aug. 2022

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Aug. 2021

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Aug. 2020

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Aug. 2019

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending Aug. 2018

No Extracted Financial Data

Document Links

990-PF

Fiscal Year Ending Aug. 2017

No Extracted Financial Data

Document Links

990-PF

Fiscal Year Ending Aug. 2016

No Extracted Financial Data

Document Links

990-PF

Fiscal Year Ending Aug. 2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending Aug. 2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

990-PF

Fiscal Year Ending Aug. 2013

Extracted Financial Data

Extracted Financial Data from Form 990

Document Links

990

Fiscal Year Ending Aug. 2012

Extracted Financial Data

Extracted Financial Data from Form 990

Revenue

$204k (2025)

Expenses

$318k (2025)

Total Assets

$3.76M (2025)

Total Liabilities

$0 (2025)

Fiscal Year Ending Aug.
2025

Fiscal Year Ending Aug.
2024

Fiscal Year Ending Aug.
2023

Fiscal Year Ending Aug.
2022

Fiscal Year Ending Aug.
2021

Fiscal Year Ending Aug.
2020

Fiscal Year Ending Aug.
2019

Fiscal Year Ending Aug.
2018

Fiscal Year Ending Aug.
2017

Fiscal Year Ending Aug.
2016

Fiscal Year Ending Aug.
2015

Fiscal Year Ending Aug.
2014

Fiscal Year Ending Aug.
2013

Fiscal Year Ending Aug.
2012

Fiscal Year Ending Aug.
2011

Fiscal Year Ending Aug.
2010

Fiscal Year Ending Aug.
2009

Fiscal Year Ending Aug.
2008

Fiscal Year Ending Aug.
2007

Fiscal Year Ending Aug.
2006

Fiscal Year Ending Aug.
2005

Fiscal Year Ending Aug.
2004

Fiscal Year Ending Aug.
2003

Fiscal Year Ending Aug.
2002

Fiscal Year Ending Aug.
2001