The Poss Family Foundation

Brookline, MA
Tax exemption issued: April 1998
EIN: 04-3412829

This organization is not listed in the IRS's most recent list of tax exempt organizations, but we have data associated with this Employer Identification Number.

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: Philanthropy, Voluntarism and Grantmaking Foundations / Private Independent Foundations (NTEE)

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. Duplicate download links may indicate a resubmission or amendment to this organization's original return. Organizations with gross receipts of less than $50,000 can file the form 990-N postcard filing, which doesn’t include financial details. All Form 990 data is from the IRS.

Fiscal Year Ending Nov.
2025

Revenue

$161,901

Expenses

$2,187,165

Net Income

-$2,025,264

Net Assets

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$213	0.1%
Dividends	$28,857	17.8%
Sales of Assets	$132,831	82.0%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,044,148	93.5%
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	$0
Total Liabilities	$0
Net Assets	$0

Compensation

Key Employees and Officers	Compensation	Other
Dr Ellen M Poss (Trustee)	$0	$0

990-PF

Filed on June 2, 2026

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Dec.
2024

Revenue

$18,158

Expenses

$433,244

Net Income

-$415,086

Net Assets

$919,465

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$8,922	49.1%
Dividends	$34,670	> 100%
Sales of Assets	-$25,434
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$381,315	88.0%
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	$919,465
Total Liabilities	$0
Net Assets	$919,465

Compensation

Key Employees and Officers	Compensation	Other
Dr Ellen M Poss (Trustee)	$0	$0

990-PF

Filed on May 12, 2025

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2023

Revenue

$58

Expenses

$523,982

Net Income

-$523,924

Net Assets

$1,344,869

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$11,824	> 100%
Dividends	$18,671	> 100%
Sales of Assets	-$30,437
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$510,000	97.3%
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	$1,344,869
Total Liabilities	$0
Net Assets	$1,344,869

Compensation

Key Employees and Officers	Compensation	Other
Dr Ellen M Poss (Trustee)	$0	$0

990-PF

Filed on Nov. 15, 2024

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2022

Revenue

$666,657

Expenses

$2,371,816

Net Income

-$1,705,159

Net Assets

$1,869,342

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$18,218	2.7%
Dividends	$24,781	3.7%
Sales of Assets	$621,693	93.3%
Other Income	$1,965	0.3%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,308,500	97.3%
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	$1,869,342
Total Liabilities	$0
Net Assets	$1,869,342

Compensation

Key Employees and Officers	Compensation	Other
Dr Ellen M Poss (Trustee)	$0	$0

990-PF

Filed on Feb. 16, 2024

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2021

Revenue

$1,512,475

Expenses

$2,677,578

Net Income

-$1,165,103

Net Assets

$3,562,868

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$6,500	0.4%
Interest Revenue	$0
Dividends	$72,569	4.8%
Sales of Assets	$1,433,406	94.8%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,645,000	98.8%
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	$3,562,868
Total Liabilities	$0
Net Assets	$3,562,868

Compensation

Key Employees and Officers	Compensation	Other
Dr Ellen M Poss (Trustee)	$0	$0

990-PF

Filed on May 13, 2022

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2020

Revenue

$3,819,026

Expenses

$3,068,404

Net Income

$750,622

Net Assets

$4,730,183

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,643,556	43.0%
Interest Revenue	$0
Dividends	$85,637	2.2%
Sales of Assets	$2,089,833	54.7%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$3,018,930	98.4%
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	$4,730,184
Total Liabilities	$1
Net Assets	$4,730,183

Compensation

Key Employees and Officers	Compensation	Other
Dr Ellen M Poss (Trustee)	$0	$0

990-PF

Filed on Nov. 12, 2021

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2019

Revenue

$2,911,351

Expenses

$3,523,729

Net Income

-$612,378

Net Assets

$5,553,418

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,014,956	34.9%
Interest Revenue	$0
Dividends	$126,411	4.3%
Sales of Assets	$1,769,984	60.8%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$3,468,600	98.4%
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	$5,553,418
Total Liabilities	$0
Net Assets	$5,553,418

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

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

PDF (2 of 2)

Fiscal Year Ending Dec.
2015

Revenue

$3,185,397

Expenses

$2,723,792

Net Income

$461,605

Net Assets

$9,567,049

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$938,284	29.5%
Interest Revenue	$0
Dividends	$195,823	6.1%
Sales of Assets	$2,038,624	64.0%
Other Income	$12,666	0.4%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,615,000	96.0%
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	$9,567,049
Total Liabilities	$0
Net Assets	$9,567,049

990-PF

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

PDF

Fiscal Year Ending Dec.
2014

Revenue

$917,067

Expenses

$1,303,611

Net Income

-$386,544

Net Assets

$9,601,458

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$159,532	17.4%
Interest Revenue	$0
Dividends	$207,193	22.6%
Sales of Assets	$538,567	58.7%
Other Income	$11,775	1.3%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,154,000	88.5%
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	$9,601,458
Total Liabilities	$0
Net Assets	$9,601,458

990-PF

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

PDF

Fiscal Year Ending Dec.
2013

Revenue

$1,415,391

Expenses

$1,278,848

Net Income

$136,543

Net Assets

$9,966,975

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$292,379	20.7%
Interest Revenue	$0
Dividends	$204,457	14.4%
Sales of Assets	$897,962	63.4%
Other Income	$20,593	1.5%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,169,000	91.4%
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	$9,966,975
Total Liabilities	$0
Net Assets	$9,966,975

990-PF

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

PDF

Fiscal Year Ending Dec.
2012

Revenue

$951,891

Expenses

$1,755,116

Net Income

-$803,225

Net Assets

$10,597,279

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$79,241	8.3%
Interest Revenue	$0
Dividends	$213,035	22.4%
Sales of Assets	$638,283	67.1%
Other Income	$21,332	2.2%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,643,790	93.7%
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	$10,597,279
Total Liabilities	$0
Net Assets	$10,597,279

990-PF

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

PDF

Fiscal Year Ending Dec.
2011

Revenue

$1,269,102

Expenses

$1,436,796

Net Income

-$167,694

Net Assets

$11,452,379

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$526,810	41.5%
Interest Revenue	$0
Dividends	$277,433	21.9%
Sales of Assets	$464,859	36.6%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,317,120	91.7%
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	$11,452,379
Total Liabilities	$0
Net Assets	$11,452,379

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 financial information from tax returns processed by the IRS since the 2012 calendar years, as well as data extracted from digital filings. IRS summary data also includes limited 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 for 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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Most organizations that have been recognized as tax exempt by the IRS have to file the 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 the 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," which does not contain financial details. Churches are not required to file Form 990.

Nonprofit Explorer has organizations that are claiming tax exemption in any of the 27 subsections of the 501(c) section of the tax code. Taxable trusts and private foundations that are required to file a form 990PF are also included.

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 Employer Identification Numbers 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.
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.
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Updated October 22, 2026

The Poss Family Foundation

Organization summary

Organization summary might be incomplete or out of date

Type of Nonprofit

Tax Filings by Year

Fiscal Year Ending Nov. 2025

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

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

Fiscal Year Ending Nov.
2025

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

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2003

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2002

Fiscal Year Ending Dec.
2001