2024-05-10T14:02:08-05:00 2023-12-31 BDO USA 90 Woodbridge Ctr Dr Ste 400 Woodbridge NJ 07095 990PF 2023-01-01 137270729 ALEXANDER W CASDIN FOUNDATION % ALEXANDER CASDIN ALEX 9179216220 131 EAST 66TH STREET Suite 10-D NEW YORK NY 10065 ALEXANDER CASDIN director 9179216220 2024-05-15 ALEXANDER CASDIN XXX-XX-XXXX true Curtis Young P01533495 7327500900 2024-05-15 2 2023 2023-04-26 12:10:37Z X 20136 X 145371 6 36534 175850 36534 181911 36534 0 6055 3027 0 3028 75 75 6130 3027 0 3103 159000 159000 165130 3027 0 162103 16781 33507 3355 20136 20136 3355 20136 20136 0 0 X 3355 20136 3355 20136 3355 20136 3355 16781 20136 20136 1120 SHARES OF BOSTON SCIENTIFIC 2020-05-21 2023-06-06 56184 39942 16242 16242 880 SHARES OF BOSTON SCIENTIFIC 2020-05-21 2023-11-20 46995 30730 16265 16265 1000 SHARE OF CENTENE CORP DEL 2020-05-19 2023-12-27 72671 68644 4027 4027 36534 466 466 466 962 0 962 496 496 false false false false false false false true true NY true false false false false true n/a ALEXANDER CASDIN 9179216220 131 EAST 66TH STREET new york NY 10065 false false false false false false false false false false false false false false false false false false false false false false false ALEXANDER CASDIN 131 EAST 66TH STREET NEW YORK NY 10065 DIRECTOR 0.25 0 0 0 SUSAN BLOCK CASDIN 131 EAST 66TH STREET NEW YORK NY 10065 DIRECTOR 0.25 0 0 0 NICHOLAS EISENMAN 131 EAST 66TH STREET NEW YORK NY 10065 DIRECTOR 0.25 0 0 0 N/A 0 11746 0 11746 0 11746 176 11570 579 579 466 466 113 113 113 162103 0 0 0 0 162103 113 0 2021 2020 2019 0 88018 79617 33220 10901 211756 162103 0 113 161990 373746 0 0 0 0 88018 285728 79617 33220 10901 161990 ALEXANDER W CASDIN NONE X CONQUER CANCER 2318 Mill Rd 800 Alexandria VA 22314 NONE PC General Fund 104000 ERASCA FOUNDATION 3115 Merryfield Row Suite 300 San Diego CA 92121 none PC General Fund 10000 Brown University Box 1893 Providence RI 02912 NONE General Fund 45000 159000 14 6 18 36534 36540 36540 false false false false false false false false false false X X 1 alexander casdin 131 EAST 66TH STREET new york NY 10065 145371 X 1 1120 SHARES OF BOSTON SCIENTIFIC 39942 2023-06-06 1 880 SHARES OF BOSTON SCIENTIFIC 30730 2023-11-17 1 1000 SHARE OF CENTENE CORP DEL 68644 2023-12-27 ACCOUNTING FEE 6055 3027 3028 BANK SERVICE FEE 75