2025-09-25T07:28:45-05:00 2024-12-31 Foundation Source 3333 New Hyde Park Rd Ste 406 New Hyde Park NY 11042 990PF 2024-01-01 870983537 Ziffrin Abbott Family Foundation % Foundation Source ZIFF 8008391754 Foundation Source 501 Silverside Rd Wilmington DE 198091377 Linda Ziffrin President 8008391754 2025-09-23 true true Jeffrey D Haskell P01345770 8008391754 2024 2025-03-06 01:10:19Z X 844827 X 154670 287 287 11264 11264 -5105 57735 6626 161116 18177 0 6071 6071 100 9728 1 9727 15899 6072 9727 16500 16500 32399 6072 26227 128717 12105 0 11372 26704 26704 533636 647021 818123 545008 673725 844827 0 0 X 545008 673725 545008 673725 545008 673725 545008 128717 673725 673725 Publicly-traded Securities 57735 51109 6626 6626 6626 168 168 168 38 0 200 238 70 70 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 Fred H Abbott Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Treas 1.0 0 0 0 Margery Ziffrin Marlowe Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Sec 1.0 0 0 0 Linda J Ziffrin Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir, Pres 1.0 0 0 0 Charles Harrison Ziffrin Abbott Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir 1.0 0 0 0 Norman Benjamin Ziffrin Abbott Foundation Source 501 Silverside Rd Wilmington DE 198091377 Dir 1.0 0 0 0 659224 19974 0 679198 0 679198 10188 669010 33451 33451 168 168 33283 33283 33283 26227 0 0 0 0 26227 33283 23427 26227 23427 2800 0 0 30483 0 0 Fred H Abbott Linda J Ziffrin X AMERICAN ACADEMY OF ARTS AND SCIENCES 136 IRVING ST CAMBRIDGE MA 02138 N/A PC General & Unrestricted 3500 DIGNITY MATTERS INC 22 FALCON RIDGE DR HOPKINTON MA 01748 N/A PC General & Unrestricted 1400 LEAGUE OF WOMEN VOTERS EDUCATION FUND 1233 20TH ST NW STE 500 WASHINGTON DC 20036 N/A PC General & Unrestricted 1800 LEAGUE OF WOMEN VOTERS LOTTE E SCHARFMAN MEMORIAL 90 CANAL ST STE 414 BOSTON MA 02114 N/A PC General & Unrestricted 2000 ONEGOAL PO BOX 734137 CHICAGO IL 60673 N/A PC General & Unrestricted 200 OPEN TABLE INC PO BOX 42 CONCORD MA 01742 N/A PC General & Unrestricted 1800 PRO PUBLICA INC 155 AVE OF THE AMERICAS 13TH FL NEW YORK NY 10013 N/A PC General & Unrestricted 2800 TRANSITMATTERS INC 62 SUMMER ST CO CLF BOSTON MA 02110 N/A PC General & Unrestricted 3000 16500 14 287 14 11264 18 -5105 6446 6446 false false false false false false false false false false X X 1 Abbott Fred H 97 Mildred Circle Concord MA 01742 34670 X 2 Marlowe Margery Ziffrin 704 Wilder Avenue Honolulu HI 96822 5000 X 3 Ziffrin Linda J 97 Mildred Circle Concord MA 01742 115000 X 89BIO 946 954 ABBOTT LABS 11338 9501 ABBVIE INC 10748 14571 ACCENTURE PLC 2622 2463 ADOBE SYSTEMS, INC 893 889 ADVANCED MICRO DEVICES INC 2001 2174 AIR PRODS & CHEM INC 5333 5221 ALIGN TECHNOLOGY, INC 4575 1668 ALPHABET INC CL A 9303 12115 ALPHABET INC CL C 8593 11426 ALTRIA GROUP INC 3074 3347 AMAZON COM 15062 17112 AMER INTERNATIONAL GROUP INC 1043 1383 AMERICAN ELECTRIC POWER INC 2610 2767 AMERICAN EXPRESS CO 1208 1187 AMERICAN TOWER REIT INC 2447 2018 AMERICOLD REALTY TRUST 964 963 ANAVEX LIFE SCIENCES COR 337 483 APOLLO GLOBAL MANAGEMENT, INC 855 826 APPLE INC 62474 91402 APPLIED MATERIALS INC 6483 7156 ARCELLX INC 711 690 ARCH CAPITAL GROUP LTD 925 924 ARCHER DANIELS MDLND 4121 2981 ARTISAN PARTNERS ASSET MANAGEM 711 990 ASEPN AEROGELS INC 134 202 ASTRAZENECA 2388 2752 AT&T, INC 2253 2732 ATLAS ENERGY SOLUTIONS 1414 1420 AUTOMATIC DATA PROCESSING INC 1615 2049 BANDWIDTH INC 255 340 BANK OF AMERICA CORP 4025 3999 BEAM INC 392 446 BEAZER HOMES USA INC 494 659 BERKSHIRE HATHAWAY INC. 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