Windsong Tr

Osco Bingemann Gigi

Manhattan Bch, CA
Tax-exempt since Sept. 2004
EIN: 56-2461733

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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 / Private Independent Foundations (NTEE)

Donations to this organization are tax deductible.

Revenue

$30.5M (2024)

Expenses

$28.5M (2024)

Total Assets

$432M (2024)

Total Liabilities

$929k (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

Revenue

$30,539,238

Expenses

$28,537,628

Net Income

$2,001,610

Net Assets

$430,887,585

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$13,692,436	44.8%
Sales of Assets	$16,796,615	55.0%
Other Income	$50,187	0.2%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,437,583	89.1%
Compensation of Officers*	$1,366,431	4.8%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$431,816,579
Total Liabilities	$928,994
Net Assets	$430,887,585

Compensation

Key Employees and Officers	Compensation	Other
Vadim Fridman (Co Trustee)	$683,216	$113,463
Gigi Osco Bingemann (Co Trustee)	$683,215	$114,066
Janet Dempsey (Executive Assistant)	$101,876	$21,454

990-PF

Filed on Oct. 17, 2025

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Dec.
2023

Revenue

$25,976,766

Expenses

$29,275,159

Net Income

-$3,298,393

Net Assets

$428,925,432

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$14,494,885	55.8%
Sales of Assets	$11,546,131	44.4%
Other Income	-$64,250

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$26,017,969	88.9%
Compensation of Officers*	$1,356,000	4.6%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$429,269,787
Total Liabilities	$344,355
Net Assets	$428,925,432

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$678,000	$66,000
Vadim Fridman (Co Trustee)	$678,000	$66,000
Janet Dempsey (Executive Assistant)	$97,000	$19,400

990-PF

Filed on Nov. 16, 2024

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

View Filing

Schedules ▼

XML

Fiscal Year Ending Dec.
2022

Revenue

$36,236,726

Expenses

$30,151,551

Net Income

$6,085,175

Net Assets

$432,216,283

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$24,209,940	66.8%
Sales of Assets	$12,026,786	33.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$26,141,800	86.7%
Compensation of Officers*	$1,355,173	4.5%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$432,637,568
Total Liabilities	$421,285
Net Assets	$432,216,283

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$677,173	$61,414
Vadim Fridman (Co Trustee)	$677,173	$61,413
Janet Dempsey (Executive Assistant)	$96,885	$19,377

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

$49,190,132

Expenses

$28,467,282

Net Income

$20,722,850

Net Assets

$426,126,584

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$29,010,583	59.0%
Sales of Assets	$20,179,549	41.0%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,085,736	88.1%
Compensation of Officers*	$1,375,722	4.8%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$426,534,426
Total Liabilities	$407,842
Net Assets	$426,126,584

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$685,005	$60,856
Vadim Fridman (Co Trustee)	$685,005	$60,856
Janet Dempsey (Executive Assistant)	$68,704	$1,785
Bonnie M Myers (Executive Assistant)	$52,281	$10,456

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990-PF

Filed on Dec. 24, 2024

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

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Schedules ▼

PDF XML

View Filing (2 of 2)

Fiscal Year Ending Dec.
2020

Revenue

$18,185,105

Expenses

$26,955,667

Net Income

-$8,770,562

Net Assets

$405,378,843

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$17,375,904	95.6%
Sales of Assets	$809,201	4.4%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$24,212,054	89.8%
Compensation of Officers*	$1,279,770	4.7%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$405,765,254
Total Liabilities	$386,411
Net Assets	$405,378,843

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$635,000	$61,885
Vadim Fridman (Co Trustee)	$635,000	$61,885
Bonnie M Myers (Executive Assistant)	$90,613	$16,114

990-PF

Filed on Nov. 14, 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

$25,208,720

Expenses

$28,088,559

Net Income

-$2,879,839

Net Assets

$414,125,695

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$18,971,452	75.3%
Sales of Assets	$6,237,268	24.7%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,237,594	89.9%
Compensation of Officers*	$1,275,070	4.5%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$414,507,711
Total Liabilities	$382,016
Net Assets	$414,125,695

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$635,000	$56,000
Vadim Fridman (Co Trustee)	$635,000	$56,000
Bonnie M Myers (Executive Assistant)	$89,000	$15,481

990-PF

Filed on Nov. 16, 2020

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

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Schedules ▼

XML

Fiscal Year Ending Dec.
2018

Revenue

$23,391,076

Expenses

$28,328,817

Net Income

-$4,937,741

Net Assets

$417,080,605

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$17,739,763	75.8%
Sales of Assets	$5,651,313	24.2%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,314,865	89.4%
Compensation of Officers*	$1,226,700	4.3%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$417,419,789
Total Liabilities	$339,184
Net Assets	$417,080,605

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$611,000	$57,350
Vadim Fridman (Co Trustee)	$611,000	$57,350
Bonnie M Myers (Executive Assistant)	$84,500	$14,647

990-PF

Filed on Nov. 12, 2019

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

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Schedules ▼

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Fiscal Year Ending Dec.
2017

Revenue

$27,241,140

Expenses

$27,595,963

Net Income

-$354,823

Net Assets

$422,020,319

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$21,390,884	78.5%
Sales of Assets	$5,825,976	21.4%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$24,346,490	88.2%
Compensation of Officers*	$1,222,000	4.4%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$422,433,190
Total Liabilities	$412,871
Net Assets	$422,020,319

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$611,000	$54,000
Vadim Fridman (Co Trustee)	$611,000	$54,000
Bonnie M Myers (Executive Assistant)	$84,500	$14,353

990-PF

Filed on Nov. 13, 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

$20,767,850

Expenses

$28,157,752

Net Income

-$7,389,902

Net Assets

$422,411,795

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$18,253,352	87.9%
Sales of Assets	$2,458,225	11.8%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,127,925	89.2%
Compensation of Officers*	$1,180,816	4.2%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$422,746,435
Total Liabilities	$334,640
Net Assets	$422,411,795

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$590,408	$53,000
Vadim Fridman (Co Trustee)	$590,408	$53,000
Bonnie M Myers (Executive Assistant)	$80,397	$13,311

990-PF

Filed on Nov. 15, 2017

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

View Filing

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PDF XML

Fiscal Year Ending Dec.
2015

Revenue

$19,336,963

Expenses

$28,584,034

Net Income

-$9,247,071

Net Assets

$429,805,362

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$17,265,959	89.3%
Sales of Assets	$2,071,004	10.7%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,624,406	89.6%
Compensation of Officers*	$1,158,596	4.1%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$430,151,503
Total Liabilities	$346,141
Net Assets	$429,805,362

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$579,298	$53,000
Vadim Fridman (Co Trustee)	$579,298	$53,000
Bonnie M Myers (Executive Assistant)	$78,246	$13,693

990-PF

Filed on Nov. 15, 2016

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

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Fiscal Year Ending Dec.
2014

Revenue

$19,100,815

Expenses

$28,211,697

Net Income

-$9,110,882

Net Assets

$439,054,120

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$14,895,532	78.0%
Sales of Assets	$4,205,283	22.0%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,420,059	90.1%
Compensation of Officers*	$1,138,370	4.0%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$439,651,073
Total Liabilities	$596,953
Net Assets	$439,054,120

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$569,185	$52,000
Vadim Fridman (Co Trustee)	$569,185	$52,000
Bonnie M Myers (Executive Assistant)	$74,086	$12,231

990-PF

Filed on Nov. 16, 2015

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

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Fiscal Year Ending Dec.
2013

Revenue

$15,046,438

Expenses

$27,663,943

Net Income

-$12,617,505

Net Assets

$448,165,792

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$9,390,757	62.4%
Sales of Assets	$5,655,681	37.6%
Other Income	$0

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,118,043	90.8%
Compensation of Officers*	$1,049,470	3.8%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$448,727,841
Total Liabilities	$562,049
Net Assets	$448,165,792

Compensation

Key Employees and Officers	Compensation	Other
Gigi Osco Bingemann (Co Trustee)	$524,735	$51,000
Vadim Fridman (Co Trustee)	$524,735	$51,000
Bonnie M Myers (Executive Assistant)	$72,308	$12,132

990-PF

Filed on Nov. 14, 2014

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

View Filing

Schedules ▼

PDF XML

Fiscal Year Ending Dec.
2012

Revenue

$7,004,828

Expenses

$27,401,704

Net Income

-$20,396,876

Net Assets

$460,787,343

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$6,126,814	87.5%
Sales of Assets	$875,770	12.5%
Other Income	$2,244	0.0%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$25,127,401	91.7%
Compensation of Officers*	$1,041,858	3.8%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$461,156,469
Total Liabilities	$369,126
Net Assets	$460,787,343

990-PF

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

PDF

Fiscal Year Ending Dec.
2011

Revenue

$2,220,336

Expenses

$23,478,842

Net Income

-$21,258,506

Net Assets

$481,249,371

Notable Sources of Revenue		Percent of Total Revenue
Contributions Received	$0
Interest Revenue	$0
Dividends	$4,977,913	> 100%
Sales of Assets	$0
Other Income	$4,220	0.2%

Notable Expenses		Percent of Total Expenses
Charitable Disbursements	$21,504,681	91.6%
Compensation of Officers*	$1,011,250	4.3%
* Officer compensation may be included in charitable disbursements, so Percent of Total Expenses may add up to greater than 100%.

Assets/Debt
Total Assets	$481,660,360
Total Liabilities	$410,989
Net Assets	$481,249,371

Nonprofit Explorer includes summary data for nonprofit tax returns and full Form 990 documents, in both PDF and digital formats.

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Types of Nonprofits

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Updated January 26, 2026

Windsong Tr

Organization summary

Type of Nonprofit

Summary charts: organization finances over time

Revenue $30.5M (2024)

Expenses $28.5M (2024)

Total Assets $432M (2024)

Total Liabilities $929k (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

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

Revenue

$30.5M (2024)

Expenses

$28.5M (2024)

Total Assets

$432M (2024)

Total Liabilities

$929k (2024)

Fiscal Year Ending Dec.
2024

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2023

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2022

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2021

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2020

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2019

Fiscal Year Ending Dec.
2018

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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

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2010

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