Mab Foundation

New York, NY
Tax-exempt since Feb. 1998
EIN: 11-3409995

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 Grantmaking Foundations (NTEE)

Donations to this organization are tax deductible.

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

$274,416

Expenses

$944,278

Net Income

-$669,862

Net Assets

$2,058,583

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$104,260	38.0%
Interest Revenue	$105	0.0%
Dividends	$33,762	12.3%
Sales of Assets	$73,553	26.8%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$944,278	100%
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	$2,058,583
Total Liabilities	$0
Net Assets	$2,058,583

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Treasurer)	$0	$0

990-PF

Filed on Nov. 11, 2025

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

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Schedules ▼

XML

Fiscal Year Ending Dec.
2023

Revenue

$370,805

Expenses

$1,181,373

Net Income

-$810,568

Net Assets

$2,682,362

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$104,260	28.1%
Interest Revenue	$0
Dividends	$99,945	27.0%
Sales of Assets	$2,324	0.6%
Other Income	$136,858	36.9%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,181,373	100%
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	$2,682,362
Total Liabilities	$0
Net Assets	$2,682,362

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Treasurer)	$0	$0

990-PF

Filed on Nov. 11, 2024

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

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Schedules ▼

XML

Fiscal Year Ending Dec.
2022

Revenue

$956,937

Expenses

$1,343,184

Net Income

-$386,247

Net Assets

$3,042,317

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$704,260	73.6%
Interest Revenue	$0
Dividends	$167,044	17.5%
Sales of Assets	$2,427	0.3%
Other Income	-$264

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,343,184	100%
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	$3,042,317
Total Liabilities	$0
Net Assets	$3,042,317

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Treasurer)	$0	$0

990-PF

Filed on Nov. 1, 2023

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

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Schedules ▼

XML

Fiscal Year Ending Dec.
2021

Revenue

$2,514,499

Expenses

$1,179,756

Net Income

$1,334,743

Net Assets

$4,597,124

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$2,346,335	93.3%
Interest Revenue	$0
Dividends	$27,076	1.1%
Sales of Assets	$57,407	2.3%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,179,756	100%
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	$4,597,124
Total Liabilities	$0
Net Assets	$4,597,124

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Treasurer)	$0	$0

990-PF

Filed on Oct. 25, 2022

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

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2020

Revenue

$2,839,476

Expenses

$756,285

Net Income

$2,083,191

Net Assets

$2,947,630

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$2,750,912	96.9%
Interest Revenue	$0
Dividends	$0
Sales of Assets	$0
Other Income	$5,374	0.2%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$756,285	100%
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	$2,947,631
Total Liabilities	$1
Net Assets	$2,947,630

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Treasurer)	$0	$0

990-PF

Filed on Nov. 1, 2021

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

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2019

Revenue

$894,969

Expenses

$874,500

Net Income

$20,469

Net Assets

$873,597

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$825,200	92.2%
Interest Revenue	$0
Dividends	$0
Sales of Assets	$0
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$874,500	100%
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	$873,598
Total Liabilities	$1
Net Assets	$873,597

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Treasurer)	$0	$0

990-PF

Filed on Nov. 3, 2020

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

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PDF XML

Fiscal Year Ending Dec.
2018

Revenue

$805,201

Expenses

$945,025

Net Income

-$139,824

Net Assets

$853,434

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$765,200	95.0%
Interest Revenue	$0
Dividends	$0
Sales of Assets	$2,377	0.3%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$945,025	100%
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	$853,434
Total Liabilities	$0
Net Assets	$853,434

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Treasurer)	$0	$0

990-PF

Filed on Nov. 7, 2019

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

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2017

Revenue

$601,221

Expenses

$1,135,780

Net Income

-$534,559

Net Assets

$994,070

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$515,200	85.7%
Interest Revenue	$0
Dividends	$0
Sales of Assets	$3,020	0.5%
Other Income	$83,001	13.8%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,135,780	100%
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	$994,070
Total Liabilities	$0
Net Assets	$994,070

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Trustee)	$0	$0

990-PF

Filed on Oct. 25, 2018

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

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2016

Revenue

$1,038,985

Expenses

$1,053,350

Net Income

-$14,365

Net Assets

$1,528,629

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,015,200	97.7%
Interest Revenue	$0
Dividends	$0
Sales of Assets	$12,044	1.2%
Other Income	$11,741	1.1%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,053,350	100%
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	$1,528,629
Total Liabilities	$0
Net Assets	$1,528,629

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Trustee)	$0	$0

990-PF

Filed on Oct. 19, 2017

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

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2015

Revenue

$1,089,411

Expenses

$1,152,665

Net Income

-$63,254

Net Assets

$1,542,994

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,165,200	> 100%
Interest Revenue	$0
Dividends	$0
Sales of Assets	-$86,074
Other Income	$10,285	0.9%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,152,665	100%
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	$1,542,994
Total Liabilities	$0
Net Assets	$1,542,994

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Trustee)	$0	$0

990-PF

Filed on Oct. 31, 2016

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

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2014

Revenue

$1,201,207

Expenses

$1,028,667

Net Income

$172,540

Net Assets

$1,502,256

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$1,165,200	97.0%
Interest Revenue	$4	0.0%
Dividends	$0
Sales of Assets	$0
Other Income	$36,003	3.0%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$1,028,667	100%
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	$1,502,256
Total Liabilities	$0
Net Assets	$1,502,256

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Trustee)	$0	$0

990-PF

Filed on Nov. 10, 2015

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

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2013

Revenue

$793,921

Expenses

$606,244

Net Income

$187,677

Net Assets

$1,433,708

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$766,200	96.5%
Interest Revenue	$0
Dividends	$17	0.0%
Sales of Assets	-$4,536
Other Income	$32,240	4.1%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$606,244	100%
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	$1,433,708
Total Liabilities	$0
Net Assets	$1,433,708

Compensation

Key Employees and Officers	Compensation	Other
Aaron Birnbaum (Trustee)	$0	$0
Alisa Birnbaum (Trustee)	$0	$0

990-PF

Filed on Nov. 11, 2014

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

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Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2012

Revenue

$935,463

Expenses

$601,072

Net Income

$334,391

Net Assets

$1,246,030

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$915,200	97.8%
Interest Revenue	$0
Dividends	$35	0.0%
Sales of Assets	$7,826	0.8%
Other Income	$12,402	1.3%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$601,072	100%
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	$1,246,031
Total Liabilities	$1
Net Assets	$1,246,030

990-PF

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

PDF

Fiscal Year Ending Dec.
2011

Revenue

$159,860

Expenses

$518,570

Net Income

-$358,710

Net Assets

$911,639

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$165,200	> 100%
Interest Revenue	$0
Dividends	$110	0.1%
Sales of Assets	$0
Other Income	$27,385	17.1%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$518,570	100%
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	$911,640
Total Liabilities	$1
Net Assets	$911,639

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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Mab Foundation

Organization summary

Type of Nonprofit

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

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2018

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2017

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2016

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2015

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2014

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2013

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Compensation

Document Links

990-PF

Fiscal Year Ending Dec. 2012

Extracted Financial Data

Extracted Financial Data from Form 990-PF

Document Links

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

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2004

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2002

Fiscal Year Ending Dec.
2001