2026-09-15T12:10:51-05:00 2025-12-31 Foundation Source 3333 New Hyde Park Rd Ste 406 New Hyde Park NY 11042 990PF 2025-01-01 843131321 Jack Yanoff Family Foundation % Foundation Source JACK 8008391754 Foundation Source 501 Silverside Rd Wilmington DE 198091377 Karen Katz President 8008391754 2026-08-17 true Jeffrey D Haskell P01345770 8008391754 2025 X 9221913 X 0 X 3812 3812 208529 208529 599775 1093948 675113 611 389 812727 887843 0 66269 66269 5500 30171 30171 101940 66269 30171 387500 387500 489440 66269 417671 323287 821574 0 130241 105611 105611 5669885 6020053 9067393 2251 48909 5802377 6125664 9221913 0 0 X 5802377 6125664 5802377 6125664 5802377 6125664 5802377 323287 6125664 6125664 Publicly-traded Securities 1093948 419873 674075 674075 Passthrough K1 Capital Gain/(Loss) 5 DIST IN EXCESS OF BASIS - ENERGY TRANSFER LP 1033 675113 11420 11420 11420 5451 0 5969 11420 X 0 0 false false false false false false false true true CA true false false false false true Foundation Source 8008391754 501 Silverside Road Suite 123 Wilmington DE 198091377 false false false false false false false false false false false false false false false false false false false false false Ellen Kahn Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir 1.0 0 0 0 Beatrice Katz Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Sec, CFO 1.0 0 0 0 Karen Katz Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Pres 10.0 0 0 0 Wells Fargo 770 TAMALPAIS DR STE 220 CORTE MADERA CA 94925 Investment Mgmt 66269 8787525 154957 0 8942482 0 8942482 134137 8808345 440417 440417 11420 11420 428997 428997 428997 417671 0 0 0 0 417671 428997 412580 2023 2022 2021 417671 412580 5091 0 0 423906 0 0 NONE X BREAST CANCER PREVENTION PARTNERS 1388 SUTTER ST STE 901 SAN FRANCISCO CA 94109 N/A PC General & Unrestricted 20000 BREAST CANCER PREVENTION PARTNERS 1388 SUTTER ST STE 901 SAN FRANCISCO CA 94109 N/A PC Yes List Fund 50000 CONGREGATION RODEF SHOLOM OF MARIN 170 N SAN PEDRO RD SAN RAFAEL CA 94903 N/A PC Annual Giving Fund 25000 CONGREGATION RODEF SHOLOM OF MARIN 170 N SAN PEDRO RD SAN RAFAEL CA 94903 N/A PC Discretionary Fund directed by Rabbi Stacy 50000 DIGNITYMOVES 2406 BUSH ST SAN FRANCISCO CA 94115 N/A PC General & Unrestricted 10000 FOOD FOR THOUGHT 6550 RAILROAD AVE FORESTVILLE CA 95436 N/A PC General & Unrestricted 7500 GREENLIGHT CLINIC 336 BON AIR CENTER STE 511 GREENBRAE CA 94904 N/A PC General & Unrestricted 60000 HEBREW FREE LOAN ASSOCIATION OF SAN FRANCISCO 131 STEUART ST STE 520 SAN FRANCISCO CA 94105 N/A PC General & Unrestricted 25000 HILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE 33 BANBURY DR SAN FRANCISCO CA 94132 N/A PC General & Unrestricted 10000 JEWISH COMMUNITY CENTER OF SAN FRANCISCO 3200 CALIFORNIA ST SAN FRANCISCO CA 94118 N/A PC General & Unrestricted 20000 JEWISH COMMUNITY RELATIONS COUNCIL OF SAN FRANCISC 121 STEUART ST STE 301 SAN FRANCISCO CA 94105 N/A PC General & Unrestricted 20000 JEWISH FAMILY & CHILDRENS SERVICES 2180 POST ST SAN FRANCISCO CA 94115 N/A PC General & Unrestricted 20000 REDWOOD EMPIRE FOOD BANK 3990 BRICKWAY BLVD SANTA ROSA CA 95403 N/A PC General & Unrestricted 25000 SAN FRANCISCO FOOD BANK 900 PENNSYLVANIA AVE SAN FRANCISCO CA 94107 N/A PC General & Unrestricted 20000 THE JEWISH HOME AND SENIOR LIVING FOUNDATION 302 SILVER AVE SAN FRANCISCO CA 94112 N/A PC General & Unrestricted 25000 387500 14 3812 14 208529 18 599775 K-1 Inc/Loss 525990 222 14 389 222 812505 812727 false false false false false false false false false false FORM 990-PF FORM 990-PF The partnership has provided a Schedule K-3 for the tax year in which they have checked one or more of the boxes in Part I but not provided sufficient back-up information to allow the Foundation to verify why such boxes were checked or the extent to which the checking of such boxes affects any item on this return. The Foundation has prepared this return to the best of its ability and without any foreign filings for such partnership based on the information provided to it by this partnership and on the basis of having received no information to the contrary. Any missing or incomplete information is due to the Foundation's inability to obtain such information and is not a willful attempt to withhold such information. AMAZON COM 97470 152341 AMERICAN ELECTRIC POWER INC 52925 76105 APPLE INC 205674 727768 BRANDYWINEGLOBAL CORPORATE CRE 152000 158254 CALVERT SHORT DURATION INCOME 50000 50570 CISCO SYSTEMS INC 46208 84656 EATON VANCE CORE PLUS BOND FUN 265000 266208 EATON VANCE STRATEGIC INCOME F 50000 51418 EXXON MOBIL CORP 28568 86404 FEDERATED ULTRA SHORT BOND FUN 50000 50161 FIRST TRUST DORSEY WRIGHT FOCU 242920 503358 FJSYX 20000 20211 GEN DYNAMICS CP 46033 107058 GOLDMAN SACHS GROUP 35087 156462 HOME DEPOT INC 43621 55056 INVESCO DWA SMALLCAP MOMENTUM 400110 437281 INVESCO SENIOR INCOME TRUST 32043 25588 ISHARES 20+ YR TREAS BD 92807 88032 ISHARES TR S & P MIDCAP 400 IN 273600 330000 JOHNSON & JOHNSON 70527 102233 JP MORGAN CHASE 68196 228132 LEGG MASON PRTNS EQ WESTERN SH 184423 186844 LOCKHEED MARTIN CORP 46271 59008 LORD ABBETT INVESTMENT TRUST S 187023 185865 MERCK & CO INC 81862 113786 MICROSOFT CORP 112337 265024 NEXTERA ENERGY, INC 57013 70325 PEPSICO INC 25807 27269 PGIM ETF TRUST AAA CLO ETF 230122 229389 PGIM SECURITIZED CREDIT 50000 50309 PIMCO INCOME FUND 352000 378013 PROCTER GAMBLE CO 56985 64203 PRUDENTIAL SHORT DURATION HIGH 32000 32578 PRUDENTIAL SHORT-TERM CORPOROR 184026 193183 PUTNAM FIXED INCOME ABSOLUTE R 50000 50860 PUTNAM SHORT DURATION BOND Y 50000 50554 SIMON PPTY GROUP INC 41647 120136 STARBUCKS CORP COM 87999 93642 TARGET CORPORATION 66086 48191 UNITEDHEALTH GROUP INC 54961 60080 VANGUARD DIVIDEND APPRECIATION 273745 529890 VANGUARD MID-CAP ETF 271645 319242 VANGUARD TOTAL STOCK MARKET ET 739792 1690095 WELLS FARGO CORE PLUS BOND FUN 177000 186057 WESTERN ASSET ADJUSTABLE RATE 184520 196001 WESTERN ASSET CORPORATE BOND F 100000 109553 ENERGY TRANSFER LP 48909 Administrative Fees 30071 30071 State or Local Filing Fees 100 100 K-1 Inc/Loss ENERGY TRANSFER LP 611 389 Investment Management Services 66269 66269 990-PF Estimated Tax for 2025 5400 990-PF Extension for 2024 100