2022-10-13T15:01:16-05:00 2021-12-31 Foundation Source 3333 New Hyde Park Rd Ste 406 New Hyde Park NY 11042 990PF 2021-01-01 061331577 The Mayer-Phillips Foundation Inc % Foundation Source MAYE 8008391754 Foundation Source 501 Silverside Rd Wilmington DE 198091377 ALESSANDRA MAYER VICE PRESIDENT 8008391754 2022-10-02 true ALESSANDRA MAYER 999009999 Jeffrey D Haskell P01345770 8008391754 2021 2022-09-23 18:48:47Z X 11295896 X 397846 28 28 193573 193573 426132 2488663 731774 445 445 1018024 925820 35000 35000 3093 3093 24719 24719 159 159 4400 53336 3666 49670 120707 28544 87763 348200 348200 468907 28544 435963 549117 897276 101477 145793 145793 6724683 6749343 10153776 25440 25440 32000 421425 901566 964327 7273025 7822142 11295896 0 0 X 7273025 7822142 7273025 7822142 7273025 7822142 7273025 549117 7822142 7822142 Publicly-traded Securities 2187552 1582164 605388 605388 Passthrough K1 Capital Gain/(Loss) 68858 JPM US RE I&G DOMESTIC LP P 2021-11-02 301111 243583 57528 57528 731774 12472 12472 12472 7968 0 5100 13068 X 0 596 596 false false false false false false false true true CT true false false false false true Foundation Source 8008391754 501 Silverside Road Suite 123 Wilmington DE 198091377 false false false false true false false false false false false false false false false false false false false false false false Alessandra Mayer Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, VP 12.0 35000 416 0 Barbara P Mayer Foundation Source 501 Silverside Rd Wilmington DE 198091377 Pres, Dir 1.0 0 0 0 Christa A Mayer Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir 1.0 0 0 0 John A Mayer Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Sec 1.0 0 0 0 Timothy P Mayer Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Treas 1.0 0 0 0 9538285 97333 1087946 10723564 0 10723564 160853 10562711 528136 528136 12472 12472 515664 515664 515664 435963 0 0 0 0 435963 515664 233976 2019 2018 2017 435963 233976 201987 0 0 313677 0 0 Barbara P Mayer John A Mayer X 5280 HIGH SCHOOL 1200 W MISSISSIPPI AVE DENVER CO 80223 N/A PC General & Unrestricted 50000 ACTIVATE WORK INC 1700 LINCOLN ST 17TH FL DENVER CO 80203 N/A PC General & Unrestricted 50000 BIDWELL TRAINING CENTER INC 1815 METROPOLITAN ST PITTSBURGH PA 15233 N/A PC General & Unrestricted 1500 CAPITAL SISTERS INTERNATIONAL INC 227 LAMB LN GOLDEN CO 80401 N/A PC General & Unrestricted 1000 CAREERWISE COLORADO 400 S COLORADO BLVD STE 400 DENVER CO 80246 N/A PC General & Unrestricted 50000 CHALLENGE FOUNDATION INC 4545 S UNIVERSITY BLVD ENGLEWOOD CO 80113 N/A PC General & Unrestricted 2500 COLORADO THERAPEUTIC RIDING CENTER 11968 MINERAL RD LONGMONT CO 80504 N/A PC General & Unrestricted 500 FII - NATIONAL PO BOX 71363 OAKLAND CA 94612 N/A PC Up Together Partner Fund 50000 MEDICINE HORSE PROGRAM 9143 VALMONT RD BOULDER CO 80301 N/A PC Equine Therapy Group - Parents Peace with Ponies 3600 MEDICINE HORSE PROGRAM 9143 VALMONT RD BOULDER CO 80301 N/A PC General & Unrestricted 5400 ONE WORLD CHILDRENS FUND 3108 GLENDALE BLVD 506 LOS ANGELES CA 90039 N/A PC Empowering Youth in Cambodia 2500 ONE WORLD CHILDRENS FUND 3108 GLENDALE BLVD 506 LOS ANGELES CA 90039 N/A PC Empowering Youth in Cambodia 1000 ONE WORLD CHILDRENS FUND 3108 GLENDALE BLVD 506 LOS ANGELES CA 90039 N/A PC General & Unrestricted 500 PHILANTHROPY COLORADO PO BOX 48149 DENVER CO 80204 N/A PC General & Unrestricted 200 PROTECT OUR DEFENDERS FOUNDATION 950 N WASHINGTON ST ALEXANDRIA VA 22314 N/A PC General & Unrestricted 500 SCHOOLHOUSE WORLD INC 3790 EL CAMINO REAL UNIT 544 PALO ALTO CA 94306 N/A PC General & Unrestricted 50000 ST VRAIN VALLEY SCHOOL DISTRICT 395 SOUTH PRATT PKWY LONGMONT CO 80501 N/A PC General & Unrestricted 75000 THORNE ECOLOGICAL INSTITUTE PO BOX 19107 BOULDER CO 80308 N/A PC General & Unrestricted 3000 WOMEN'S FOUNDATION OF COLORADO INC 1901 E ASBURY AVE 3RD FL DENVER CO 80208 N/A PC General & Unrestricted 1000 348200 14 28 14 193573 18 426132 K-1 Inc/Loss 14 445 620178 620178 false false false false false false false false false false X X 1 Mayer Barbara P 1074 s Gilpin St Denver CO 80209 309137 X 2 Mayer John A 1074 S Gilpin St Denver CO 80209 88710 X 1 MASTERCARD INC MA, 703 sh. 247825 2021-09-28 1 NVIDIA CORP NVDA, 151 sh. 47641 2021-12-07 1 APPLE INC AAPL, 72 sh. 12237 2021-12-07 1 ADVANCED MICRO DEVICES INC AMD, 10 sh. 1434 2021-12-07 2 EQUITY LIFESTYLE PRP ELS, 1085 sh. 88710 2021-07-21 JPMORGAN CHASE - 7.900% - 12/3 25440 32000 FIDELITY 500 INDEX FUND 940558 1354543 FIDELITY INTERNATL INDEX INSTL 88095 93622 ISHARES BARCLAYS US TREASURY B 86004 86870 ISHARES CORE MSCI EAFE ETF 214501 255567 ISHARES TRUST MSCI EAFE INDEX 478945 650133 JPMORGAN BETA BUILDERS EUROPE 741033 833970 JPMORGAN BETABUILDERS CANADA E 192016 276125 JPMORGAN BETABUILDERS DEVELOPE 183384 180890 JPMORGAN BETABUILDERS JAPAN ET 160279 169701 PRUDENTIAL HIGH YIELD FUND CLA 159045 182433 SPDR S&P 500 ETF TRUST 2055620 4630860 VANGUARD CHARLOTTE INTL BD IDX 33062 31993 VANGUARD MORTGAGE-BACKED SEC I 89221 87239 VANGUARD ST BOND ETF 187572 184292 VANGUARD TOT INTL BOND IX ADMI 688613 677011 VANGUARD TOTAL BOND MARKET ETF 280183 278489 VANGUARD TOTAL BOND MARKET IND 171212 180038 GENERAL ATLANTIC INVST PARTNER 90207 82946 HPS CORE SR LENDING OFFSHORE F 159446 169946 MILLENNIUM PRIVATE INVESTORS O 58097 51373 ORBIMED ROYALTIES III PRVTE IN 82155 132604 PEG GLOBAL PRIVATE EQUITY VIII 261661 314876 RTW OFFSHORE FUND ONE, LTD 250000 212582 Administrative Fees 48760 48760 Foundation Dues & Memberships 810 810 K-1 Exp JPM US RE I&G DOMESTIC 3666 3666 State or Local Filing Fees 100 100 K-1 Inc/Loss JPM US RE I&G DOMESTIC LP 445 445 Investment Management Services 24719 24719 990-PF Estimated Tax for 2021 4400