Milwaukee Chamber Orchestra Inc

Milwaukee, WI
Tax-exempt since Oct. 1979
EIN: 23-7390067

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: Arts, Culture and Humanities / Symphony Orchestras (NTEE)

Donations to this organization are tax deductible.

Revenue

$30.3k (2025)

Expenses

$45.5k (2025)

Total Assets

$2.23k (2025)

Total Liabilities

$6.21k (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 June
2025

Revenue

$30,328

Expenses

$45,520

Net Income

-$15,192

Net Assets

-$3,976

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$28,758	94.8%
Program Services	$1,570	5.2%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$2,231
Total Liabilities	$6,207
Net Assets	-$3,976

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim Mandl (Vice President)	$0	$0
Heather Zinninger (Treasurer)	$0	$0
Margaret Butler (Secretary)	$0	$0

+ View more people

990-EZ

Filed on Oct. 29, 2025

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

View Filing

Schedules ▼

XML

Fiscal Year Ending June
2024

Revenue

$56,734

Expenses

$52,996

Net Income

$3,738

Net Assets

$11,216

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$48,599	85.7%
Program Services	$8,135	14.3%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$11,577
Total Liabilities	$361
Net Assets	$11,216

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim Mandl (Vice President)	$0	$0
Heather Zinninger (Treasurer)	$0	$0
Margaret Butler (Secretary)	$0	$0

+ View more people

990-EZ

Filed on Oct. 23, 2024

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

View Filing

Schedules ▼

XML

Fiscal Year Ending June
2023

Revenue

$30,230

Expenses

$39,476

Net Income

-$9,246

Net Assets

$7,478

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$11,692	38.7%
Program Services	$18,538	61.3%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$8,703
Total Liabilities	$1,225
Net Assets	$7,478

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim Mandl (Vice President)	$0	$0
Heather Yarmel (Treasurer)	$0	$0
Kelsey Monlinari (Secretary)	$0	$0

+ View more people

990-EZ

Filed on Oct. 9, 2023

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

View Filing

Schedules ▼

XML

Fiscal Year Ending June
2022

Revenue

$32,169

Expenses

$28,848

Net Income

$3,321

Net Assets

$16,274

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$26,779	83.2%
Program Services	$5,375	16.7%
Investment Income	$15	0.0%
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$16,774
Total Liabilities	$500
Net Assets	$16,274

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim Mandl (Vice President)	$0	$0
Heather Yarmel (Treasurer)	$0	$0
Kelsey Monlinari (Secretary)	$0	$0

+ View more people

990-EZ

Filed on Oct. 5, 2023

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

View Filing

Schedules ▼

XML

Fiscal Year Ending June
2021

Revenue

$2,171

Expenses

$903

Net Income

$1,268

Net Assets

$12,953

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$0
Program Services	$2,161	99.5%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$10	0.5%

Assets/Debt
Total Assets	$13,003
Total Liabilities	$50
Net Assets	$12,953

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim Mandl (Vice President)	$0	$0
Heather Yarmel (Treasurer)	$0	$0
Kelsey Monlinari (Secretary)	$0	$0

+ View more people

990-EZ

Filed on Sept. 13, 2021

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

View Filing

Schedules ▼

XML

Fiscal Year Ending June
2020

Revenue

$10,568

Expenses

$4,856

Net Income

$5,712

Net Assets

$11,685

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$6,519	61.7%
Program Services	$4,049	38.3%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$11,935
Total Liabilities	$250
Net Assets	$11,685

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim Mandl (Vice President)	$0	$0
Heather Yarmel (Treasurer)	$0	$0
Margaret Butler (Secretary)	$0	$0

+ View more people

990-EZ

Filed on Oct. 29, 2020

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending June
2019

Revenue

$10,928

Expenses

$7,892

Net Income

$3,036

Net Assets

$5,973

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$7,821	71.6%
Program Services	$3,107	28.4%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$6,073
Total Liabilities	$100
Net Assets	$5,973

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim Mandl (Vice President)	$0	$0
Heather Yarmel (Treasurer)	$0	$0
Margaret Butler (Secretary)	$0	$0

+ View more people

990-EZ

Filed on Sept. 30, 2019

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending June
2018

Revenue

$7,085

Expenses

$5,235

Net Income

$1,850

Net Assets

$2,937

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$4,748	67.0%
Program Services	$2,337	33.0%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$3,412
Total Liabilities	$475
Net Assets	$2,937

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim (Vice President)	$0	$0
William Helmers (Treasurer)	$0	$0
Margaret Padilla (Secretary)	$0	$0
Barbara Henry (Director)	$0	$0

+ View more people

990-EZ

Filed on Aug. 9, 2018

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending June
2017

Revenue

$10,582

Expenses

$11,123

Net Income

-$541

Net Assets

$1,087

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$4,301	40.6%
Program Services	$6,281	59.4%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$1,087
Total Liabilities	$0
Net Assets	$1,087

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim (Vice President)	$0	$0
William Helmers (Treasurer)	$0	$0
Margaret Padilla (Secretary)	$0	$0
Barbara Henry (Director)	$0	$0

+ View more people

990-EZ

Filed on Oct. 2, 2017

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending June
2016

Revenue

$8,097

Expenses

$6,813

Net Income

$1,284

Net Assets

$1,628

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$4,639	57.3%
Program Services	$3,458	42.7%
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$1,928
Total Liabilities	$300
Net Assets	$1,628

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim (Vice President)	$0	$0
William Helmers (Treasurer)	$0	$0
Marguerite Helmers (Secretary)	$0	$0
Barbara Henry (Director)	$0	$0

+ View more people

990-EZ

Filed on Aug. 31, 2016

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

View Filing

Schedules ▼

PDF XML

PDF (2 of 2)

Fiscal Year Ending June
2015

Revenue

$700

Expenses

$180

Net Income

$520

Net Assets

$344

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$600	85.7%
Program Services	$0
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$100	14.3%

Assets/Debt
Total Assets	$344
Total Liabilities	$0
Net Assets	$344

Compensation

Key Employees and Officers	Compensation	Other
Sascha Mandl (President)	$0	$0
Jeanyi Kim (Vice President)	$0	$0
William Helmers (Treasurer)	$0	$0
Marguerite Helmers (Secretary)	$0	$0
Barbara Henry (Director)	$0	$0

+ View more people

990-EZ

Filed on Nov. 9, 2015

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending June
2014

Revenue

$26,641

Expenses

$29,570

Net Income

-$2,929

Net Assets

-$176

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$26,641	100%
Program Services	$0
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$424
Total Liabilities	$600
Net Assets	-$176

Compensation

Key Employees and Officers	Compensation	Other
Lee Ferro (President)	$0	$0
Katherine Moreadith (Vice President)	$0	$0
Michael Cornell (Treasurer)	$0	$0
Daniel Matre (Secretary)	$0	$0
James Nelson (Director)	$0	$0
Tracy Johnson (Director)	$0	$0
Joyce Tang Boyland (Director)	$0	$0
Elder J Daniels Iii (Director)	$0	$0
Lydia Mulvany (Director)	$0	$0

+ View more people

990-EZ

Filed on Jan. 26, 2015

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending June
2013

Revenue

$18,142

Expenses

$25,966

Net Income

-$7,824

Net Assets

$2,617

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$18,142	100%
Program Services	$0
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$0

Assets/Debt
Total Assets	$2,617
Total Liabilities	$0
Net Assets	$2,617

990-EZ

Filed on Jan. 9, 2014

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending June
2012

Revenue

$86,203

Expenses

$78,818

Net Income

$7,385

Net Assets

$10,441

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$78,581	91.2%
Program Services	$0
Investment Income	$0
Net Fundraising	$0
Sales of Assets	$0
Net Inventory Sales	$0
Other Revenue	$7,622	8.8%

Assets/Debt
Total Assets	$10,441
Total Liabilities	$0
Net Assets	$10,441

990-EZ

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

PDF

Fiscal Year Ending June
2011

Revenue

$106,755

Expenses

$88,390

Net Income

$18,365

Net Assets

$3,056

Notable Sources of Revenue		Percent of Total Revenue
Contributions	$62,226	58.3%
Program Services	$27,987	26.2%
Investment Income	$0
Net Fundraising	-$738
Sales of Assets	-$4,000
Net Inventory Sales	$0
Other Revenue	$21,280	19.9%

Assets/Debt
Total Assets	$6,976
Total Liabilities	$3,920
Net Assets	$3,056

990

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

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 »

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 December 22, 2025

Milwaukee Chamber Orchestra Inc

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $30.3k (2025)

Expenses $45.5k (2025)

Total Assets $2.23k (2025)

Total Liabilities $6.21k (2025)

Tax Filings by Year

Fiscal Year Ending June 2025

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2024

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2023

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2022

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2021

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2020

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2019

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2018

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2017

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2016

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2015

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

990-EZ

Fiscal Year Ending June 2014

Extracted Financial Data

Extracted Financial Data from 990-EZ

Compensation

Document Links

Revenue

$30.3k (2025)

Expenses

$45.5k (2025)

Total Assets

$2.23k (2025)

Total Liabilities

$6.21k (2025)

Fiscal Year Ending June
2025

Fiscal Year Ending June
2024

Fiscal Year Ending June
2023

Fiscal Year Ending June
2022

Fiscal Year Ending June
2021

Fiscal Year Ending June
2020

Fiscal Year Ending June
2019

Fiscal Year Ending June
2018

Fiscal Year Ending June
2017

Fiscal Year Ending June
2016

Fiscal Year Ending June
2015

Fiscal Year Ending June
2014

Fiscal Year Ending June
2013

Fiscal Year Ending June
2012

Fiscal Year Ending June
2011

Fiscal Year Ending June
2010

Fiscal Year Ending June
2009

Fiscal Year Ending June
2008

Fiscal Year Ending June
2007

Fiscal Year Ending June
2006

Fiscal Year Ending June
2005

Fiscal Year Ending June
2004

Fiscal Year Ending June
2003

Fiscal Year Ending June
2002

Fiscal Year Ending June
2001

Fiscal Year Ending Dec.
1999