The Mesdag Family Foundation

EIN 13-3651269 • Los Angeles, CA

1 Oakmont DriveLos Angeles, CA 90049

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

0.00x

Tied with the lowest-debt nonprofits in its peer group.

$10M-$25M nonprofits • Source year 2025

0.00x

Tied with the lowest-debt nonprofits in its peer group.

$10M-$25M nonprofits • Source year 2025

68%

Higher net margin than 92% of similar nonprofits.

$10M-$25M nonprofits • Source year 2025

Higher top officer pay than 25% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

$10M-$25M nonprofits • Source year 2025

4.3%

Faster asset growth than 51% of similar nonprofits.

$10M-$25M nonprofits • Annualized from 2024 to 2025

-17%

Faster revenue growth than 15% of similar nonprofits.

$10M-$25M nonprofits • Annualized from 2024 to 2025

Balance Sheet

Liabilities / Assets19th percentile

Assets

$16,073,937

Up $662,048 (+4.3%) from 2024

Liabilities

Flat

Flat from 2024

Net Assets

$16,073,937

Up $662,048 (+4.3%) from 2024

Operations

Liabilities / Revenue20th percentile Net Margin92nd percentile

Revenue

Down

$2,884,466

Down $571,434 (-17%) from 2024

Expenses

Down

$920,170

Down $16,456 (-1.8%) from 2024

Net Income

Down

$1,964,296

Down $554,978 (-22%) from 2024

Trend Graphs

Balance Sheet Trend

Asset Growth51st percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

Highlighted filing

2025

Assets$16,073,937

Liabilities$0

Net Assets$16,073,937

Open 2025 Filing

Operations Trend

Revenue Growth15th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

Highlighted filing

2025

Revenue$2,884,466

Expenses$920,170

Net Income$1,964,296

Open 2025 Filing

Filings

Most recent year

2025 • Form 990PFDetailed filing. Detailed filing data is available for this year.

Open filing

Assets: $16,073,937
Liabilities: $0
Net assets: $16,073,937
Revenue: $2,884,466
Expenses: $920,170
Net income: $1,964,296

	Balance Sheet			Operations
Year	Assets	Liabilities	Net Assets	Revenue	Expenses	Net Income
2025Detailed filing. Detailed filing data is available for this year.	$16.1	$0.00	$16.1	$2.88	$0.92	$1.96
2024Detailed filing. Detailed filing data is available for this year.	$15.4	$0.00	$15.4	$3.46	$0.94	$2.52
2023Detailed filing. Detailed filing data is available for this year.	$14.5	$0.00	$14.5	$1.29	$0.84	$0.45
2022Detailed filing. Detailed filing data is available for this year.	$14.1	$0.00	$14.1	$0.71	$0.73	$0.02
2021Detailed filing. Detailed filing data is available for this year.	$14.5	$0.00	$14.5	$0.82	$0.86	$0.04
2020Detailed filing. Detailed filing data is available for this year.	$14.6	$0.00	$14.6	$0.39	$0.72	$0.33
2015Summary only. Only limited summary data is available for this year.	$13.0	$0.00		$0.16	$1.09	$1.25
2014Summary only. Only limited summary data is available for this year.	$14.3	$0.00		$0.06	$0.96	$0.90
2013Summary only. Only limited summary data is available for this year.	$15.2	$0.00		$3.13	$0.82	$2.31
2012Summary only. Only limited summary data is available for this year.	$12.9	$0.00		$0.20	$0.54	$0.34
2011Summary only. Only limited summary data is available for this year.	$13.2	$0.00		$0.20	$0.36	$0.17

Latest Filing Detail

Jump To

Filing Snapshot

Filing Period: Apr 1, 2024 to Mar 31, 2025
Signed: Feb 15, 2026
Return Version: 2024v5.5

Compensation and Service Providers

Top Officer Pay25th percentile

Employees

Name	Title	Full / Part Time	Base	Other	Total
T WILLEM MESDAG	Trustee/Part-Time	-	$0	-	-
LISA ANN MESDAG	Trustee/Part-Time	-	$0	-	-

Grants and Assistance

Foundation Grants and Related Investments

Type	Recipient	Purpose	Status	Location	Amount
Paid Grant	ASPEN MUSIC FESTIVAL AND SCHOOL	GENERAL SUPPORT	CHARITY	ASPEN, CO, US	$100,000
Paid Grant	PRINCETON UNIVERSITY	GENERAL SUPPORT	CHARITY	PRINCETON, NJ, US	$75,000
Paid Grant	HARVARD-WESTLAKE SCHOOL	GENERAL SUPPORT	CHARITY	STUDIO CITY, CA, US	$60,000
Paid Grant	ST MONICA'S CATHOLIC CHURCH	GENERAL SUPPORT	CHARITY	SAN LOUIS, MO, US	$60,000
Paid Grant	OBAMA FOUNDATION	GENERAL SUPPORT	CHARITY	CHICAGO, IL, US	$55,600
Paid Grant	GOLDMAN SACHS PHILANTHROPY FUND	GENERAL SUPPORT	CHARITY	NEW YORK CITY, NY, US	$50,000
Paid Grant	LA CLIPPERS FIRE AID	GENERAL SUPPORT	CHARITY	INGLEWOOD, CA, US	$50,000
Paid Grant	THEATER ASPEN	GENERAL SUPPORT	CHARITY	ASPEN, CO, US	$35,000
Paid Grant	PACIFIC COUNCIL ON INTERNATIONAL POLICY	GENERAL SUPPORT	CHARITY	LOS ANGELES, CA, US	$34,600
Paid Grant	COLORADO ACADEMY	GENERAL SUPPORT	CHARITY	DENVER, CO, US	$30,000
Paid Grant	ASPEN CENTER FOR ENVIROMENTAL STUDIES	GENERAL SUPPORT	CHARITY	ASPEN, CO, US	$25,000
Paid Grant	KELLOGG SCHOOL OF MANAGEMENT	GENERAL SUPPORT	CHARITY	EVANSTON, IL, US	$15,000
Paid Grant	ASPEN ART MUSEUM	GENERAL SUPPORT	CHARITY	ASPEN, CO, US	$10,000
Paid Grant	ASPEN COMMUNITY FOUNDATION	GENERAL SUPPORT	CHARITY	BASALT, CO, US	$10,000
Paid Grant	ASPEN INSTITUTE	GENERAL SUPPORT	CHARITY	WASHINGTON, DC, US	$10,000
Paid Grant	ASPEN VALLEY LAND TRUST	GENERAL SUPPORT	CHARITY	CARBONDALE, CO, US	$10,000
Paid Grant	COUNCIL ON FOREIGN RELATIONS	GENERAL SUPPORT	CHARITY	NEW YORK, NY, US	$10,000
Paid Grant	HEAL THE BAY	GENERAL SUPPORT	CHARITY	SANTA MONICA, CA, US	$10,000
Paid Grant	INDEPENDENCE PASS FOUNDATION	GENERAL SUPPORT	CHARITY	CARBONDALE, CO, US	$10,000
Paid Grant	INTERNATIONAL MEDICAL CORPS	GENERAL SUPPORT	CHARITY	LOS ANGELES, CA, US	$10,000
Paid Grant	INTERNATIONAL RESCUE COMMITTEE	GENERAL SUPPORT	CHARITY	NEW YORK, NY, US	$10,000
Paid Grant	LOS ANGELES FIRE DEPARTMENT FOUNDATION	GENERAL SUPPORT	CHARITY	LOS ANGELES, CA, US	$10,000
Paid Grant	LOS ANGELES LIBRARY FOUNDATION	GENERAL SUPPORT	CHARITY	LOS ANGELES, CA, US	$10,000
Paid Grant	LOS ANGELES MISSION	GENERAL SUPPORT	CHARITY	LOS ANGELES, CA, US	$10,000
Paid Grant	LOS ANGELES PHILHARMONIC	GENERAL SUPPORT	CHARITY	LOS ANGELES, CA, US	$10,000
Paid Grant	NORTHWESTERN UNIVERSITY	GENERAL SUPPORT	CHARITY	EVANSTON, IL, US	$10,000
Paid Grant	OCEAN CLEANUP	GENERAL SUPPORT	CHARITY	NEW YORK, NY, US	$10,000
Paid Grant	TENTH MOUNTAIN DIVISION	GENERAL SUPPORT	CHARITY	LAKEWOOD, CO, US	$10,000
Paid Grant	BOOKS FOR KIDS	GENERAL SUPPORT	CHARITY	NEW YORK, NY, US	$5,000
Paid Grant	DENVER PUBLIC LIBRARY	GENERAL SUPPORT	CHARITY	DENVER, CO, US	$5,000
Paid Grant	KVSC - 881FM RADIO	GENERAL SUPPORT	CHARITY	ST CLOUD, MN, US	$5,000
Paid Grant	LA PLATA OPEN SPACE CONSERVATORY	GENERAL SUPPORT	CHARITY	LOS ANGELES, CA, US	$5,000
Paid Grant	PLANET WORD	GENERAL SUPPORT	CHARITY	WASHINGTON, DC, US	$5,000
Paid Grant	ST JUDES CHILDREN HOSPITAL	GENERAL SUPPORT	CHARITY	MEMPHIS, TN, US	$5,000
Paid Grant	ST MATTHEWS PARISH	GENERAL SUPPORT	CHARITY	PACIFIC PALISADES, CA, US	$5,000
Paid Grant	ST MATTHEWS PARISH SCHOOL	GENERAL SUPPORT	CHARITY	SAN MATEO, CA, US	$5,000
Paid Grant	TEAM RUBICON	GENERAL SUPPORT	CHARITY	EL SEGUNDO, CA, US	$5,000
Paid Grant	WILDERNESS LAND TRUST	GENERAL SUPPORT	CHARITY	HELENA, MT, US	$5,000
Paid Grant	PROSPECT FOUNDATION (TIGER INN ACCOUNT)	GENERAL SUPPORT	CHARITY	NORTH SUTTON, NH, US	$2,000
Paid Grant	WEST POINT HOCKEY	GENERAL SUPPORT	CHARITY	WEST POINT, NY, US	$2,000
Paid Grant	COLORADO BALLET	GENERAL SUPPORT	CHARITY	DENVER, CO, US	$1,000
Paid Grant	DENVER ART MUSEUM	GENERAL SUPPORT	CHARITY	DENVER, CO, US	$1,000
Paid Grant	DENVER BOTANICAL GARDEN	GENERAL SUPPORT	CHARITY	DENVER, CO, US	$1,000
Paid Grant	DENVER MUSEUM OF NATURE & SCIENCE	GENERAL SUPPORT	CHARITY	DENVER, CO, US	$1,000
Paid Grant	DENVER ZOO	GENERAL SUPPORT	CHARITY	DENVER, CO, US	$1,000
Paid Grant	MUSEUM OF CONTEMPORARY ART DENVER	GENERAL SUPPORT	CHARITY	DENVER, CO, US	$1,000

Filing and Contact Details

Filer

Filer Name: The Mesdag Family Foundation
EIN: 13-3651269
Phone: 9734726250
Address: 1 OAKMONT DRIVE, LOS ANGELES, CA 90049

Signing Officer

Name: T Willem Mesdag
Title: Trustee
Phone: 9734726250
Signed: 2026-02-15
Discuss with paid preparer: Yes

Preparer

Firm: Sax Advisors LLC
Address: 389 INTERPACE PARKWAY STE 3, PARSIPPANY, NJ 07054
Preparer: Joseph J Bulger
Phone: 9734726250

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This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

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IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/HowAcquiredCd	9	P
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	0	63000 SHS BANK OF AMERICA
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	1	62000 SHS MORGAN STANLEY
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	2	101000 SHS US TREAURY NOTE
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	3	36000 SHS SHIRE ACQUISITION INVESTMENT
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	4	19000 SHS VERIZON COMMUNICATIONS
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	5	113000 SHS US TREASURY NOTE
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	6	300000 SHS US TREASURY NOTE
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	7	183000 SHS US TREASURY
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	8	SHORT-TERM LOSSES FROM PASS-THROUGH ENTITIES
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/PropertyDesc	9	LONG-TERM GAINS FROM PASS-THROUGH ENTITIES
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	0	2024-12-06
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	1	2024-05-30
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	2	2024-05-31
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	3	2024-07-12
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	4	2024-11-26
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	5	2024-04-30
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	6	2024-11-30
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	7	2024-02-29
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	8	2025-03-31
IRS990PF/CapGainsLossTxInvstIncmDetail/CapGainsLossTxInvstIncmGrp/SoldDt	9	2025-03-31
IRS990PF/CapGainsLossTxInvstIncmDetail/CapitalGainNetIncomeAmt	0	146556
IRS990PF/ChgInNetAssetsFundBalancesGrp/ExcessRevenueOverExpensesAmt	0	1964296
IRS990PF/ChgInNetAssetsFundBalancesGrp/OtherDecreasesAmt	0	1302248
IRS990PF/ChgInNetAssetsFundBalancesGrp/OtherIncreasesAmt	0	0
IRS990PF/ChgInNetAssetsFundBalancesGrp/SubtotalAmt	0	17376185
IRS990PF/ChgInNetAssetsFundBalancesGrp/TotNetAstOrFundBalancesBOYAmt	0	15411889
IRS990PF/ChgInNetAssetsFundBalancesGrp/TotNetAstOrFundBalancesEOYAmt	0	16073937
IRS990PF/DistributableAmountGrp/DeductionFromDistributableAmt	0	0
IRS990PF/DistributableAmountGrp/DistributableAsAdjustedAmt	0	865547
IRS990PF/DistributableAmountGrp/DistributableBeforeAdjAmt	0	865547
IRS990PF/DistributableAmountGrp/DistributableBeforeDedAmt	0	865547
IRS990PF/DistributableAmountGrp/IncomeTaxAmt	0	16515
IRS990PF/DistributableAmountGrp/MinimumInvestmentReturnAmt	0	907416
IRS990PF/DistributableAmountGrp/RecoveriesQualfiedDistriAmt	0	0
IRS990PF/DistributableAmountGrp/TaxBasedOnInvestmentIncomeAmt	0	25354
IRS990PF/DistributableAmountGrp/TotalTaxAmt	0	41869
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/BackupWithholdingWithheldAmt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/EsPenaltyAmt	0	690
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/EstimatedPlusOvpmtIncmTxAmt	0	2354
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/ExemptFrgnOrgTaxWthldAtSrceAmt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/ExtsnRequestIncomeTaxPaidAmt	0	20000
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/Form2220AttachedInd	0	X
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/InvestmentIncomeExciseTaxAmt	0	25354
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/SubtitleATaxAmt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/SubtotalAmt	0	25354
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxBasedOnInvestmentIncomeAmt	0	25354
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxDueAmt	0	3690
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TaxUnderSection511Amt	0	0
IRS990PF/ExciseTaxBasedOnInvstIncmGrp/TotalPaymentsAndCreditsAmt	0	22354
IRS990PF/FMVAssetsEOYAmt	0	18309866
IRS990PF/Form990PFBalanceSheetsGrp/AdditionalPaidInCapitalBOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/AdditionalPaidInCapitalEOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/CapitalStockBOYAmt	0	15411889
IRS990PF/Form990PFBalanceSheetsGrp/CapitalStockEOYAmt	0	16073937
IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockBOYAmt	0	6775064
IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockEOYAmt	0	7419009
IRS990PF/Form990PFBalanceSheetsGrp/CorporateStockEOYFMVAmt	0	8413253
IRS990PF/Form990PFBalanceSheetsGrp/OrgDoesNotFollowFASB117Ind	0	X
IRS990PF/Form990PFBalanceSheetsGrp/OtherAssetsBOYAmt	0	8105941
IRS990PF/Form990PFBalanceSheetsGrp/OtherAssetsEOYAmt	0	7716284
IRS990PF/Form990PFBalanceSheetsGrp/OtherAssetsEOYFMVAmt	0	8957969
IRS990PF/Form990PFBalanceSheetsGrp/RetainedEarningBOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/RetainedEarningEOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/SavAndTempCashInvstBOYAmt	0	530884
IRS990PF/Form990PFBalanceSheetsGrp/SavAndTempCashInvstEOYAmt	0	938644
IRS990PF/Form990PFBalanceSheetsGrp/SavAndTempCashInvstEOYFMVAmt	0	938644
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsBOYAmt	0	15411889
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsEOYAmt	0	16073937
IRS990PF/Form990PFBalanceSheetsGrp/TotalAssetsEOYFMVAmt	0	18309866
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesBOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesEOYAmt	0	0
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesNetAstBOYAmt	0	15411889
IRS990PF/Form990PFBalanceSheetsGrp/TotalLiabilitiesNetAstEOYAmt	0	16073937
IRS990PF/Form990PFBalanceSheetsGrp/TotNetAstOrFundBalancesBOYAmt	0	15411889
IRS990PF/Form990PFBalanceSheetsGrp/TotNetAstOrFundBalancesEOYAmt	0	16073937
IRS990PF/MethodOfAccountingCashInd	0	X
IRS990PF/MinimumInvestmentReturnGrp/AcquisitionIndebtednessAmt	0	0
IRS990PF/MinimumInvestmentReturnGrp/AdjustedTotalFMVOfUnusedAstAmt	0	18424685
IRS990PF/MinimumInvestmentReturnGrp/AverageMonthlyCashBalancesAmt	0	981298
IRS990PF/MinimumInvestmentReturnGrp/AverageMonthlyFMVOfSecAmt	0	8152701
IRS990PF/MinimumInvestmentReturnGrp/CashDeemedCharitableAmt	0	276370
IRS990PF/MinimumInvestmentReturnGrp/FMVAllOtherNoncharitableAstAmt	0	9290686
IRS990PF/MinimumInvestmentReturnGrp/MinimumInvestmentReturnAmt	0	907416
IRS990PF/MinimumInvestmentReturnGrp/NetVlNoncharitableAssetsAmt	0	18148315
IRS990PF/MinimumInvestmentReturnGrp/ReductionClaimedAmt	0	0
IRS990PF/MinimumInvestmentReturnGrp/TotalFMVOfUnusedAssetsAmt	0	18424685
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/CompOfHghstPdCntrctOrNONETxt	0	NONE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/CompOfHghstPdEmplOrNONETxt	0	NONE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/ContractorPaidOver50kCnt	0	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/AverageHrsPerWkDevotedToPosRt	0	0.10
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/AverageHrsPerWkDevotedToPosRt	1	0.10
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/CompensationAmt	0	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/CompensationAmt	1	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/EmployeeBenefitProgramAmt	0	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/EmployeeBenefitProgramAmt	1	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/ExpenseAccountOtherAllwncAmt	0	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/ExpenseAccountOtherAllwncAmt	1	0
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm	0	T WILLEM MESDAG
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/PersonNm	1	LISA ANN MESDAG
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt	0	TRUSTEE/PART-TIME
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/TitleTxt	1	TRUSTEE/PART-TIME
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/AddressLine1Txt	0	1 OAKMONT DRIVE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/AddressLine1Txt	1	1 OAKMONT DRIVE
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/CityNm	0	LOS ANGELES
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/CityNm	1	LOS ANGELES
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/StateAbbreviationCd	0	CA
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/StateAbbreviationCd	1	CA
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/ZIPCd	0	90049
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OfficerDirTrstKeyEmplGrp/USAddress/ZIPCd	1	90049
IRS990PF/OfficerDirTrstKeyEmplInfoGrp/OtherEmployeePaidOver50kCnt	0	0
IRS990PF/Organization501c3ExemptPFInd	0	X
IRS990PF/PFQualifyingDistributionsGrp/ExpensesAndContributionsAmt	0	810950
IRS990PF/PFQualifyingDistributionsGrp/ProgramRelatedInvstTotalAmt	0	0
IRS990PF/PFQualifyingDistributionsGrp/QualifyingDistributionsAmt	0	810950
IRS990PF/StatementsRegardingActy4720Grp/BrrwOrLendDisqualifiedPrsnInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/BusinessHoldingsInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/FurnGoodsDisqualifiedPrsnInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/GrantsToIndividualsInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/GrantsToOrganizationsInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/InfluenceElectionInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/InfluenceLegislationInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/JeopardyInvestmentsInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/NoncharitablePurposeInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/PayCompDisqualifiedPrsnInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/PaymentToGovernmentOfficialInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/PayPremiumsPrsnlBnftCntrctInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/ProhibitedTaxShelterTransInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/RcvFndsToPayPrsnlBnftCntrctInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/SaleOrExchDisqualifiedPrsnInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/SubjToTaxRmnrtnExPrchtPymtInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/TransferAstDisqualifiedPrsnInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/UncorrectedPriorActsInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/UncorrectedPYJeopardyInvstInd	0	0
IRS990PF/StatementsRegardingActy4720Grp/UndistributedIncomePYInd	0	0
IRS990PF/StatementsRegardingActyGrp/ActivitiesNotPreviouslyRptInd	0	0
IRS990PF/StatementsRegardingActyGrp/AtLeast5000InAssetsInd	0	1
IRS990PF/StatementsRegardingActyGrp/ChangesToArticlesOrBylawsInd	0	0
IRS990PF/StatementsRegardingActyGrp/ComplyWithPublicInspRqrInd	0	1
IRS990PF/StatementsRegardingActyGrp/DonorAdvisedFundInd	0	0
IRS990PF/StatementsRegardingActyGrp/ForeignAccountsQuestionInd	0	0
IRS990PF/StatementsRegardingActyGrp/Form1120POLFiledInd	0	0
IRS990PF/StatementsRegardingActyGrp/Form990PFFiledWithAttyGenInd	0	1
IRS990PF/StatementsRegardingActyGrp/Form990TFiledInd	0	1
IRS990PF/StatementsRegardingActyGrp/IndividualWithBooksNm	0	SAX ADVISORS LLC
IRS990PF/StatementsRegardingActyGrp/LegislativePoliticalActyInd	0	0
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/AddressLine1Txt	0	389 INTERPACE PARKWAY STE 3
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/CityNm	0	PARSIPPANY
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/StateAbbreviationCd	0	NJ
IRS990PF/StatementsRegardingActyGrp/LocationOfBooksUSAddress/ZIPCd	0	07054
IRS990PF/StatementsRegardingActyGrp/MoreThan100SpentInd	0	0
IRS990PF/StatementsRegardingActyGrp/NewSubstantialContributorsInd	0	0
IRS990PF/StatementsRegardingActyGrp/OrganizationDissolvedEtcInd	0	0
IRS990PF/StatementsRegardingActyGrp/OrgReportOrRegisterStateCd	0	NY
IRS990PF/StatementsRegardingActyGrp/OwnControlledEntityInd	0	0
IRS990PF/StatementsRegardingActyGrp/PhoneNum	0	9734726850
IRS990PF/StatementsRegardingActyGrp/PrivateOperatingFoundationInd	0	0
IRS990PF/StatementsRegardingActyGrp/Section4955ManagersTaxAmt	0	0
IRS990PF/StatementsRegardingActyGrp/Section4955OrganizationTaxAmt	0	0
IRS990PF/StatementsRegardingActyGrp/Section508eRqrSatisfiedInd	0	1
IRS990PF/StatementsRegardingActyGrp/TaxReimbursedAmt	0	0
IRS990PF/StatementsRegardingActyGrp/UnrelatedBusIncmOverLimitInd	0	1
IRS990PF/StatementsRegardingActyGrp/WebsiteAddressTxt	0	N/A
IRS990PF/SummaryOfDirectChrtblActyGrp/Description1Txt	0	PLEASE NOTE, THE FOUNDATION IS NOT INVOLVED IN ANY DIRECT CHARITABLE ACTIVITIES. ITS PRIMARY PURPOSE IS TO SUPPORT, BY CONTRIBUTIONS, OTHER ORGANIZATIONS EXEMPT UNDER INTERNAL REVENUE CODE SECTION 501(C)(3). THE TRUSTEES CHOOSE THESE ORGANIZATIONS BASED ON THEIR KNOWLEDGE OF THE ORGANIZATION'S ACTIVITIES. NO CONTRIBUTIONS, GRANTS, GIFTS, LOANS, OR SCHOLARSHIPS ARE MADE TO INDIVIDUALS. THE ORGANIZATION DOES NOT PRESENTLY RECEIVE APPLICATIONS OR CONDUCT PROGRAMS FOR DONATIONS IN ITS ACTIVITIES.
IRS990PF/SummaryOfDirectChrtblActyGrp/Expenses1Amt	0	0
IRS990PF/SumOfProgramRelatedInvstGrp/TotalAmt	0	0
IRS990PF/SupplementaryInformationGrp/ContributingManagerNm	0	T WILLEM MESDAG
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	0	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	1	25000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	2	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	3	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	4	100000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	5	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	6	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	7	30000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	8	1000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	9	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	10	1000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	11	1000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	12	1000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	13	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	14	1000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	15	50000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	16	60000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	17	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	18	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	19	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	20	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	21	15000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	22	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	23	50000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	24	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	25	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	26	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	27	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	28	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	29	1000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	30	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	31	55600
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	32	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	33	34600
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	34	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	35	75000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	36	2000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	37	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	38	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	39	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	40	60000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	41	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	42	10000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	43	35000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	44	2000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/Amt	45	5000
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	0	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	1	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	2	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	3	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	4	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	5	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	6	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	7	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	8	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	9	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	10	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	11	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	12	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	13	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	14	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	15	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	16	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	17	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	18	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	19	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	20	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	21	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	22	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	23	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	24	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	25	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	26	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	27	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	28	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	29	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	30	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	31	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	32	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	33	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	34	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	35	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	36	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	37	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	38	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	39	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	40	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	41	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	42	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	43	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	44	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/GrantOrContributionPurposeTxt	45	GENERAL SUPPORT
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	0	ASPEN ART MUSEUM
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	1	ASPEN CENTER FOR ENVIROMENTAL STUDIES
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	2	ASPEN COMMUNITY FOUNDATION
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	3	ASPEN INSTITUTE
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	4	ASPEN MUSIC FESTIVAL AND SCHOOL
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	5	ASPEN VALLEY LAND TRUST
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	6	BOOKS FOR KIDS
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	7	COLORADO ACADEMY
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	8	COLORADO BALLET
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	9	COUNCIL ON FOREIGN RELATIONS
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	10	DENVER ART MUSEUM
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	11	DENVER BOTANICAL GARDEN
IRS990PF/SupplementaryInformationGrp/GrantOrContributionPdDurYrGrp/RecipientBusinessName/BusinessNameLine1Txt	12	DENVER MUSEUM OF NATURE & SCIENCE

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