2024-03-13T09:15:03-05:00 2023-12-31 Foundation Source 3333 New Hyde Park Rd Ste 406 New Hyde Park NY 11042 990PF 2023-01-01 201266221 The Black Dog Private Foundation Inc % Foundation Source BLAC 8008391754 Foundation Source 501 Silverside Rd Wilmington DE 198091377 DAVID MAHONEY PRESIDENT 8008391754 2024-03-08 true DAVID MAHONEY 999009999 true Jeffrey D Haskell P01345770 8008391754 2023 2023-04-26 12:10:37Z X 4059602 X 1132451 48018 48018 89255 89255 113772 348403 310178 1383496 447451 0 3763 3763 54 54 5925 18446 18446 28188 3817 18446 708000 708000 736188 3817 726446 647308 443634 1577492 256477 256477 1589017 3557340 3803125 3166509 3813817 4059602 0 0 X 3166509 3813817 3166509 3813817 3166509 3813817 3166509 647308 3813817 3813817 Publicly-traded Securities 348403 38225 310178 310178 310178 6167 6167 6167 5400 0 5400 X 0 767 false false false false false false false true true DE 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 Winnifred Ellis Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, VP 1.0 0 0 0 David L Mahoney Foundation Source 501 Silverside Rd Wilmington DE 198091377 Pres, Dir, Sec 1.0 0 0 0 2576344 1086945 0 3663289 0 3663289 54949 3608340 180417 180417 6167 6167 174250 174250 174250 726446 0 0 0 0 726446 174250 2021 2020 2019 307721 161191 272755 27073 835670 1604410 726446 174250 552196 2156606 0 307721 1848885 161191 272755 27073 835670 552196 David L Mahoney Winnifred Ellis X 10000 DEGREES 1401 LOS GAMOS DR STE 205 SAN RAFAEL CA 94903 N/A PC General & Unrestricted 5000 AMERICAN CONSERVATORY THEATRE FOUNDATION 415 GEARY ST SAN FRANCISCO CA 94102 N/A PC General & Unrestricted 5000 AMERICAN INDEPENDENT FOUNDATION 800 MAINE AVE SW WASHINGTON DC 20024 N/A PC American Independent Radio Program 200000 BARTH SYNDROME FOUNDATION INC PO BOX 419264 BOSTON MA 02241 N/A PC Will McCurdy Fund 2500 BERRY CENTER INC PO BOX 582 NEW CASTLE KY 40050 N/A PC General & Unrestricted 10000 BOYS & GIRLS CLUBS OF SAN FRANCISCO 380 FULTON ST SAN FRANCISCO CA 94102 N/A PC General & Unrestricted 5000 CATCHLIGHT 1150 25TH ST 120 SAN FRANCISCO CA 94107 N/A PC General & Unrestricted 5000 DIGNITYMOVES 2406 BUSH ST SAN FRANCISCO CA 94115 N/A PC General & Unrestricted 5000 ENVIRONMENTAL DEFENSE FUND INCORPORATED PO BOX 98051 WASHINGTON DC 20077 N/A PC General & Unrestricted 10000 FOR-SITE FOUNDATION 2 MARINA BLVD BDLG C STE 255 SAN FRANCISCO CA 94123 N/A PC General & Unrestricted 1000 GEYSERVILLE VOLUNTEER FIREFIGHTERS ASSOCIATION INC PO BOX 1042 GEYSERVILLE CA 95441 N/A PC General & Unrestricted 1000 GIVEDIRECTLY INC CHURCH STREET STA PO BOX 3221 NEW YORK NY 10008 N/A PC General & Unrestricted 2500 HAWAII COMMUNITY FOUNDATION 827 FORT ST MALL HONOLULU HI 96813 N/A PC Maui Strong Fund 5000 HEALTHCARE FOUNDATION NORTHERN SONOMA COUNTY 111 MONTE VISTA DR STE A HEALDSBURG CA 95448 N/A PC General & Unrestricted 2500 KERN PROJECT 518 TAMALPAIS DRIVE STE STE B CORTE MADERA CA 94925 N/A PC General & Unrestricted 6000 KQED INC 2601 MARIPOSA ST SAN FRANCISCO CA 94110 N/A PC General & Unrestricted 25000 LEARNUP CENTERS 2325 PINE ST SAN FRANCISCO CA 94115 N/A PC General & Unrestricted 7500 MEALS ON WHEELS OF SAN FRANCISCO INC 2142 JERROLD AVE SAN FRANCISCO CA 94124 N/A PC General & Unrestricted 2500 MERCY CORPS PO BOX 37800 BOONE IA 50037 N/A PC General & Unrestricted 15000 NARAL PRO-CHOICE AMERICA FOUNDATION- REPRODUCTIVE 1725 EYE ST NW SUITE 900 WASHINGTON DC 20006 N/A PC General & Unrestricted 5000 OCEANIC PRESERVATION SOCIETY 336 BON AIR CENTER 384 GREENBRAE CA 94904 N/A PC for the Shechange fillm 1500 OUTWARD BOUND CALIFORNIA PO BOX 29632 SAN FRANCISCO CA 94129 N/A PC Annual Board Gift 50000 SAN FRANCISCO FILM SOCIETY 455 9TH ST SAN FRANCISCO CA 94103 N/A PC General & Unrestricted 2500 SAN FRANCISCO FOOD BANK 900 PENNSYLVANIA AVE SAN FRANCISCO CA 94107 N/A PC General & Unrestricted 2500 SAN FRANCISCO MUSEUM OF MODERN ART 151 3RD ST SAN FRANCISCO CA 94103 N/A PC for the Photography Accessions Committee, Unrestricted Giving, and the Art of Today Annual Exhibition Fund 112500 THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIO PO BOX 20466 STANFORD CA 94309 N/A PC for the Morris Hirshfield exhibition at the Cantor Arts Center 5000 THE PHILANTHROPY WORKSHOP INC 110 E 25TH ST NEW YORK NY 10010 N/A PC General & Unrestricted 12000 TRUSTEES OF MOUNT HOLYOKE COLLEGE 50 COLLEGE ST SOUTH HADLEY MA 01075 N/A PC Mount Holyoke Art Museum 1500 VOTER REGISTRATION PROJECT PO BOX 33436 WASHINGTON DC 20033 N/A PC Everybody Votes Campaign 200000 708000 14 48018 14 89255 18 113772 251045 251045 false false false false false false false false false false X X 1 D L Mahoney W C Ellis 1998 Fami DL Mahoney 121 Jordan Avenue San Francisco CA 94118 1132451 X 1 CORCEPT THERAPEUTICS INC CORT, 34850 sh. 1132451 2023-08-29 ASPIRIANT DEFENSIVE ALLOCATION 445283 448676 ASPIRIANT RISK MANAGED GLOBAL 481751 556803 ASPIRIANT RISK-MANAGED TAXABLE 360500 365574 CORCEPT THERAPEUTICS INC 1362289 1498854 DFA EMERGING MARKETS CORE EQ P 66912 73806 DFA EMERGING MARKETS VALUE POR 63475 66229 DFA INTERNATIONAL CORE EQUITY 157472 180746 DFA INTERNATIONAL SMALL CAP VA 76000 83619 DOUBLELINE TOTAL RETURN BOND 112543 98043 ISHARES CORE US VALUE 69172 88378 METROPOLITAN WEST RETURN BOND 194231 167499 VANGUARD DIVIDEND GROWTH FD 50000 55553 VANGUARD SMALL-CAP VALUE ETF 39621 50212 VANGUARD TOTAL BOND MARKET IND 78091 69133 Administrative Fees 18421 18421 State or Local Filing Fees 25 25 Investment Management Services 3763 3763 990-PF Estimated Tax for 2023 5400 990-PF Excise Tax for 2022 525