The Nathan Seter Foundation

Washington, DC
Tax-exempt since Feb. 2002
EIN: 13-4150736

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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.

Category: Philanthropy, Voluntarism and Grantmaking Foundations / Corporate Foundations (NTEE)

Donations to this organization are tax deductible.

Revenue

$2.71M (2024)

Expenses

$2.11M (2024)

Total Assets

$22.9M (2024)

Total Liabilities

$0 (2024)

Years with missing data

Source: Form 990 tax filings from 2010 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

Revenue

$2,709,471

Expenses

$2,111,780

Net Income

$597,691

Net Assets

$22,908,222

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$87,166	3.2%
Dividends	$608,708	22.5%
Sales of Assets	$2,005,746	74.0%
Other Income	$7,851	0.3%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,013,900	95.4%
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	$22,908,222
Total Liabilities	$0
Net Assets	$22,908,222

Compensation

Key Employees and Officers	Compensation	Other
Robert Ross (President)	$0	$0
Jonathan Blattmachr (Treasurer)	$0	$0

990-PF

Filed on Nov. 14, 2025

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Dec.
2023

Revenue

$1,034,778

Expenses

$2,353,798

Net Income

-$1,319,020

Net Assets

$24,355,531

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$154,589	14.9%
Dividends	$385,128	37.2%
Sales of Assets	$476,377	46.0%
Other Income	$18,684	1.8%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,207,020	93.8%
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	$24,355,531
Total Liabilities	$0
Net Assets	$24,355,531

Compensation

Key Employees and Officers	Compensation	Other
Robert Ross (President)	$0	$0
Jonathan Blattmachr (Treasurer)	$0	$0

990-PF

Filed on Nov. 15, 2024

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Dec.
2022

Revenue

$7,723,161

Expenses

$2,006,669

Net Income

$5,716,492

Net Assets

$25,674,551

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$4,668,000	60.4%
Interest Revenue	$858	0.0%
Dividends	$432,829	5.6%
Sales of Assets	$2,621,441	33.9%
Other Income	$33	0.0%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,765,045	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	$25,674,551
Total Liabilities	$0
Net Assets	$25,674,551

Compensation

Key Employees and Officers	Compensation	Other
Robert Ross (President)	$0	$0
Jonathan Blattmachr (Treasurer)	$0	$0

990-PF

Filed on Nov. 15, 2023

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2021

Revenue

$1,162,414

Expenses

$1,633,387

Net Income

-$470,973

Net Assets

$22,383,522

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$100,693	8.7%
Dividends	$384,285	33.1%
Sales of Assets	$677,436	58.3%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,538,350	94.2%
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	$22,383,522
Total Liabilities	$0
Net Assets	$22,383,522

Compensation

Key Employees and Officers	Compensation	Other
Robert Ross (President)	$0	$0
Arnold Simon (Vice President)	$0	$0
Jonathan Blattmachr (Secretary)	$0	$0

990-PF

Filed on Nov. 14, 2022

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2020

Revenue

$4,047,859

Expenses

$1,815,989

Net Income

$2,231,870

Net Assets

$22,854,495

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,510,000	37.3%
Interest Revenue	$204,180	5.0%
Dividends	$237,529	5.9%
Sales of Assets	$2,094,496	51.7%
Other Income	$1,654	0.0%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,712,300	94.3%
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	$22,854,495
Total Liabilities	$0
Net Assets	$22,854,495

Compensation

Key Employees and Officers	Compensation	Other
Arnold Simon (President)	$0	$0
Robert Ross (Vice President)	$0	$0
Jonathan Blattmachr (Secretary)	$0	$0

990-PF

Filed on July 13, 2022

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2019

Revenue

$6,328,040

Expenses

$1,864,287

Net Income

$4,463,753

Net Assets

$20,622,625

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$6,700,000	> 100%
Interest Revenue	$59,398	0.9%
Dividends	$375,785	5.9%
Sales of Assets	$0
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,798,800	96.5%
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	$20,622,625
Total Liabilities	$0
Net Assets	$20,622,625

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

Fiscal Year Ending Dec.
2015

Revenue

$6,383,320

Expenses

$2,303,282

Net Income

$4,080,038

Net Assets

$20,166,014

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$300,000	4.7%
Interest Revenue	$24,757	0.4%
Dividends	$241,890	3.8%
Sales of Assets	$5,816,673	91.1%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,097,654	91.1%
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	$20,166,014
Total Liabilities	$0
Net Assets	$20,166,014

990-PF

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

PDF

Fiscal Year Ending Dec.
2014

Revenue

$8,937,159

Expenses

$1,892,689

Net Income

$7,044,470

Net Assets

$15,570,387

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,015,000	11.4%
Interest Revenue	$1,154	0.0%
Dividends	$95,276	1.1%
Sales of Assets	$7,838,515	87.7%
Other Income	-$12,786

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,739,211	91.9%
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	$15,570,387
Total Liabilities	$0
Net Assets	$15,570,387

990-PF

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

PDF

Fiscal Year Ending Dec.
2013

Revenue

$1,705,478

Expenses

$2,766,407

Net Income

-$1,060,929

Net Assets

$6,632,767

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,550,000	90.9%
Interest Revenue	$731	0.0%
Dividends	$110,227	6.5%
Sales of Assets	$44,520	2.6%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$2,743,061	99.2%
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	$6,633,017
Total Liabilities	$250
Net Assets	$6,632,767

990-PF

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

PDF

Fiscal Year Ending Dec.
2012

Revenue

$923,289

Expenses

$1,336,794

Net Income

-$413,505

Net Assets

$7,695,367

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$775,000	83.9%
Interest Revenue	$66	0.0%
Dividends	$98,213	10.6%
Sales of Assets	$50,010	5.4%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,319,925	98.7%
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	$7,695,617
Total Liabilities	$250
Net Assets	$7,695,367

990-PF

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

PDF

Fiscal Year Ending Dec.
2011

Revenue

$795,621

Expenses

$1,616,653

Net Income

-$821,032

Net Assets

$8,110,527

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$650,000	81.7%
Interest Revenue	$89	0.0%
Dividends	$131,981	16.6%
Sales of Assets	$19,081	2.4%
Other Income	-$5,530

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,585,469	98.1%
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	$8,110,527
Total Liabilities	$0
Net Assets	$8,110,527

990-PF

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

PDF

Fiscal Year Ending Dec.
2010

Revenue

$1,240,578

Expenses

$1,873,657

Net Income

-$633,079

Net Assets

$8,933,197

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,441,000	> 100%
Interest Revenue	$55,492	4.5%
Dividends	$122,336	9.9%
Sales of Assets	$0
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,805,861	96.4%
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	$8,933,197
Total Liabilities	$0
Net Assets	$8,933,197

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

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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.

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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.

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Updated January 26, 2026

The Nathan Seter Foundation

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $2.71M (2024)

Expenses $2.11M (2024)

Total Assets $22.9M (2024)

Total Liabilities $0 (2024)

Tax Filings by Year

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

Extracted Financial Data from Form 990-PF

Document Links

Revenue

$2.71M (2024)

Expenses

$2.11M (2024)

Total Assets

$22.9M (2024)

Total Liabilities

$0 (2024)

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

Fiscal Year Ending Dec.
2003

Fiscal Year Ending Dec.
2002

Fiscal Year Ending Dec.
2001