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Osa Foundation Inc

  • Washington, DC
  • Tax-exempt since June 2002
  • EIN: 71-0913500

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 / Public Foundations (NTEE)

Donations to this organization are tax deductible.

Summary charts: organization finances over time

Revenue
$6.01M (2024)

Expenses
$3.37M (2024)

Total Assets
$38.5M (2024)

Total Liabilities
$480k (2024)

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

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$6,013,285
Expenses
$3,366,261
Net Income
$2,647,024
Net Assets
$38,041,095
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,309,051
21.8%
Program Services $215,395
3.6%
Investment Income $1,214,127
20.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $3,274,712
54.5%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $38,521,152
Total Liabilities $480,057
Net Assets $38,041,095
Compensation
Key Employees and Officers Compensation Related Other
Chad Stark (Executive Director Thru Sept 2024) $0 $342,497 $46,660
Magnus Bengtsson (Director) $0 $0 $0
Stephen D Fantone (Director) $0 $0 $0
Eve Griliches (Director) $0 $0 $0
Antigone Marino (Director) $0 $0 $0
Rick Plympton (Director) $0 $0 $0
Valey Kamalov (Director) $0 $0 $0
Simin Cai (Director) $0 $0 $0
Michal Lipson (Director) $0 $0 $0
Eric Mazur (Chair) $0 $0 $0
George Bay Z (Secretary Treasurer) $0 $0 $0
+ View more people

Document Links

990
Filed on June 13, 2025

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

View Filing
XML

Fiscal Year Ending Dec.
2023

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$8,678,480
Expenses
$3,084,864
Net Income
$5,593,616
Net Assets
$38,938,933
Notable Sources of Revenue Percent of Total Revenue
Contributions $4,336,132
50.0%
Program Services $168,429
1.9%
Investment Income $4,248,392
49.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$74,473
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $39,030,109
Total Liabilities $91,176
Net Assets $38,938,933
Compensation
Key Employees and Officers Compensation Related Other
Chad Stark (Executive Director) $0 $173,537 $24,530
Magnus Bengtsson (Member) $0 $0 $0
Stephen D Fantone (Member) $0 $0 $0
Eve Griliches (Member) $0 $0 $0
Antigone Marino (Member) $0 $0 $0
Rick Plympton (Member) $0 $0 $0
Valey Kamalov (Member) $0 $0 $0
Simin Cai (Member) $0 $0 $0
Satoshi Kawata (Member) $0 $0 $0
Eric Mazur (Chair) $0 $0 $0
George Bayz (Secretary/Treasurer) $0 $0 $0
+ View more people

Document Links

990
Filed on Nov. 16, 2024

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

View Filing
XML

Fiscal Year Ending Dec.
2022

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$6,158,345
Expenses
$3,041,444
Net Income
$3,116,901
Net Assets
$32,390,517
Notable Sources of Revenue Percent of Total Revenue
Contributions $5,214,824
84.7%
Program Services $149,837
2.4%
Investment Income $867,553
14.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets -$73,869
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $32,440,327
Total Liabilities $49,810
Net Assets $32,390,517
Compensation
Key Employees and Officers Compensation Related Other
Chad Stark (Executive Director) $0 $167,121 $21,041
Magnus Bengtsson (Member) $0 $0 $0
Stephen D Fantone (Member) $0 $0 $0
Eve Griliches (Member) $0 $0 $0
Antigone Marino (Member) $0 $0 $0
Rick Plympton (Member) $0 $0 $0
Valey Kamalov (Member) $0 $0 $0
Connie Chang Hasnain (Member) $0 $0 $0
Satoshi Kawata (Optica President) $0 $0 $0
Eric Mazur (Chair) $0 $0 $0
George Bayz (Secretary/Treasurer) $0 $0 $0
+ View more people

Document Links

990
Filed on May 16, 2023

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

View Filing
XML

Fiscal Year Ending Dec.
2021

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$6,732,341
Expenses
$771,946
Net Income
$5,960,395
Net Assets
$35,002,633
Notable Sources of Revenue Percent of Total Revenue
Contributions $3,813,858
56.6%
Program Services $10,025
0.1%
Investment Income $1,052,202
15.6%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $1,856,256
27.6%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $35,009,133
Total Liabilities $6,500
Net Assets $35,002,633
Compensation
Key Employees and Officers Compensation Related Other
Chad Stark (Executive Director) $0 $172,818 $20,080
Magnus Bengtsson (Member) $0 $0 $0
Stephen D Fantone (Member) $0 $0 $0
Eve Griliches (Member) $0 $0 $0
Antigone Marino (Member) $0 $0 $0
Rick Plympton (Member) $0 $0 $0
Linda Smith (Member) $0 $0 $0
Eric Mazur (Chair) $0 $0 $0
George Bayz (Secretary/Treasurer) $0 $0 $0
Alexander Sawchuk (Past Chair) $0 $0 $0
+ View more people

Document Links

990
Filed on June 14, 2022

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

View Filing
XML

Fiscal Year Ending Dec.
2020

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$3,848,727
Expenses
$887,691
Net Income
$2,961,036
Net Assets
$28,374,482
Notable Sources of Revenue Percent of Total Revenue
Contributions $2,658,250
69.1%
Program Services $46,285
1.2%
Investment Income $626,988
16.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $517,748
13.5%
Net Inventory Sales -$544
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $28,376,150
Total Liabilities $1,668
Net Assets $28,374,482
Compensation
Key Employees and Officers Compensation Related Other
Chad Stark (Executive Director) $0 $288,765 $36,428
Stephen D Fantone (Member) $0 $0 $0
Erich Ippen (Member) $0 $0 $0
Wendy Laurin (Member) $0 $0 $0
Ursula Gibson (Member) $0 $0 $0
James R Fienup (Member) $0 $0 $0
Antigone Marino (Member) $0 $0 $0
Linda Smith (Member) $0 $0 $0
Alexander Sawchuk (Chair) $0 $0 $0
George Bayz (Secretary/Treasurer) $0 $0 $0
+ View more people

Document Links

990
Filed on Nov. 11, 2021

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

View Filing
XML

Fiscal Year Ending Dec.
2019

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$2,536,355
Expenses
$1,226,256
Net Income
$1,310,099
Net Assets
$22,885,435
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,601,661
63.1%
Program Services $145,263
5.7%
Investment Income $576,700
22.7%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $212,731
8.4%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $22,982,349
Total Liabilities $96,914
Net Assets $22,885,435
Compensation
Key Employees and Officers Compensation Related Other
Chad Stark (Executive Director) $0 $268,153 $34,761
Stephen D Fantone (Member) $0 $0 $0
Erich Ippen (Member) $0 $0 $0
Wendy Laurin (Member) $0 $0 $0
Ian Walmsley (Member) $0 $0 $0
James R Fienup (Member) $0 $0 $0
Antigone Marino (Member) $0 $0 $0
Ursula Gibson (Member) $0 $0 $0
Alexander Sawchuk (Chair) $0 $0 $0
George Bayz (Secretary/Treasurer) $0 $0 $0
+ View more people

Document Links

990
Filed on Aug. 12, 2020

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2018

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$3,131,421
Expenses
$762,365
Net Income
$2,369,056
Net Assets
$18,707,304
Notable Sources of Revenue Percent of Total Revenue
Contributions $2,349,280
75.0%
Program Services $89,600
2.9%
Investment Income $536,837
17.1%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $155,704
5.0%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $18,713,544
Total Liabilities $6,240
Net Assets $18,707,304
Compensation
Key Employees and Officers Compensation Related Other
Stephen D Fantone (Member) $0 $0 $0
Janet S Fender (Member) $0 $0 $0
Eric Mazur (Member) $0 $0 $0
Erich Ippen (Member) $0 $0 $0
Wendy Laurin (Member) $0 $0 $0
Ian Walmsley (Member) $0 $0 $0
James R Fienup (Member) $0 $0 $0
Alexander Sawchuk (Chair) $0 $0 $0
George Bayz (Secretary/Treasurer) $0 $0 $0
Chad Stark (Executive Director) $0 $246,180 $32,866
+ View more people

Document Links

990
Filed on July 23, 2019

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2017

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$4,651,451
Expenses
$627,737
Net Income
$4,023,714
Net Assets
$18,063,262
Notable Sources of Revenue Percent of Total Revenue
Contributions $4,120,983
88.6%
Program Services $12,750
0.3%
Investment Income $385,781
8.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $131,937
2.8%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $18,073,771
Total Liabilities $10,509
Net Assets $18,063,262
Compensation
Key Employees and Officers Compensation Related Other
Stephen D Fantone (Member) $0 $0 $0
Janet S Fender (Member) $0 $0 $0
Alexander Sawchuk (Chair) $0 $0 $0
George Bayz (Secretary/Treasurer) $0 $0 $0
Eric Mazur (Member) $0 $0 $0
John Bruning (Member) $0 $0 $0
Yasaman Soudagar (Member) $0 $0 $0
Ursula Gibson (Member) $0 $0 $0
Don Keck (Member) $0 $0 $0
Chad Stark (Executive Director) $0 $224,396 $30,086
+ View more people

Document Links

990
Filed on July 31, 2018

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2016

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$2,360,942
Expenses
$602,194
Net Income
$1,758,748
Net Assets
$12,679,948
Notable Sources of Revenue Percent of Total Revenue
Contributions $2,064,422
87.4%
Program Services $0
Investment Income $290,292
12.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $6,228
0.3%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $12,690,248
Total Liabilities $10,300
Net Assets $12,679,948
Compensation
Key Employees and Officers Compensation Related Other
Yasaman Soudagar (Member) $0 $0 $0
Stephen D Fantone (Member) $0 $0 $0
Janet S Fender (Member) $0 $0 $0
Don Keck (Member) $0 $0 $0
Alan Willner (Director) $0 $0 $0
Ian Walmsley (Director) $0 $0 $0
John Bruning (Member) $0 $0 $0
Alexander Sawchuk (Chair) $0 $0 $0
Elizabeth A Rogan (Ceo) $0 $543,938 $148,163
George Bayz (Secretary/Treasurer) $0 $0 $0
+ View more people

Document Links

990
Filed on Aug. 8, 2017

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

View Filing
PDF XML

Fiscal Year Ending Dec.
2015

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$1,083,994
Expenses
$509,889
Net Income
$574,105
Net Assets
$10,388,595
Notable Sources of Revenue Percent of Total Revenue
Contributions $660,807
61.0%
Program Services $0
Investment Income $303,072
28.0%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $120,115
11.1%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $10,395,195
Total Liabilities $6,600
Net Assets $10,388,595

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2014

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$1,203,917
Expenses
$403,446
Net Income
$800,471
Net Assets
$10,304,378
Notable Sources of Revenue Percent of Total Revenue
Contributions $919,509
76.4%
Program Services $0
Investment Income $282,121
23.4%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $2,287
0.2%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $10,315,174
Total Liabilities $10,796
Net Assets $10,304,378

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2013

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$1,898,190
Expenses
$358,913
Net Income
$1,539,277
Net Assets
$9,277,373
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,483,747
78.2%
Program Services $0
Investment Income $176,559
9.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $237,884
12.5%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $9,301,668
Total Liabilities $24,295
Net Assets $9,277,373

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2012

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$1,351,282
Expenses
$426,942
Net Income
$924,340
Net Assets
$7,066,001
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,112,153
82.3%
Program Services $0
Investment Income $179,041
13.2%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $60,088
4.4%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $7,069,270
Total Liabilities $3,269
Net Assets $7,066,001

Document Links

990

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

PDF

Fiscal Year Ending Dec.
2011

Extracted Financial Data

Extracted Financial Data from Form 990
Revenue
$1,270,416
Expenses
$448,093
Net Income
$822,323
Net Assets
$5,670,390
Notable Sources of Revenue Percent of Total Revenue
Contributions $1,088,170
85.7%
Program Services $0
Investment Income $130,360
10.3%
Bond Proceeds $0
Royalties $0
Rental Property Income $0
Net Fundraising $0
Sales of Assets $51,886
4.1%
Net Inventory Sales $0
Other Revenue $0
Notable Expenses Percent of Total Expenses
Executive Compensation $0
Professional Fundraising Fees $0
Other Salaries and Wages $0
Assets/Debt
Total Assets $5,675,439
Total Liabilities $5,049
Net Assets $5,670,390

Document Links

990

Primary tax return for a nonprofit’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

Primary tax return for a nonprofit’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

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

PDF

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

990

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

PDF

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

990

Primary tax return for a nonprofit’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

Primary tax return for a nonprofit’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

Primary tax return for a nonprofit’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

Primary tax return for a nonprofit’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

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.

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About Nonprofit Explorer

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.

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