2024-11-13T10:07:50-08:00 2023-12-31 953533570 Weyer Crellin & Custer 245 Fischer Ave A3 Costa Mesa CA 92626 990PF 2023-01-01 824380106 BONSEN FOUNDATION BONS 8573017283 100 MEMORIAL DRIVE APT 5-3B CAMBRIDGE MA 02142 JOOST PAUL BONSEN President 2024-11-12 true true EVAN M CUSTER CPA P01211102 7144299283 2023 2024-10-15 13:58:12Z X 4746096 X X 33593 33593 33593 83559 83559 83559 117152 117152 117152 13318 13318 3103 3103 150 150 1053 1053 17624 17624 0 250000 250000 267624 17624 250000 -150472 99528 117152 1498596 1266845 1266845 5000 5000 2852898 2531351 2531351 668880 942900 942900 5020374 4746096 4746096 7822 2144 7822 2144 X 5012552 4743952 5012552 4743952 5020374 4746096 5012552 -150472 4862080 118128 4743952 1383 1383 1383 5000 5000 X 1 3616 3616 false false false false false false false true true CA DE false false false false false true N/A JOOST PAUL BONSEN 8573017283 100 MEMORIAL DRIVE APT 5-3B CAMBRIDGE MA 02142 false false false false false false false false false false false false false false false false false false false false false false JOOST P BONSEN 100 MEMORIAL DRIVE APT 5-3B CAMBRIDGE MA 02142 President 10.00 0 NONE NONE 3386268 1476032 0 4862300 0 4862300 72935 4789365 239468 239468 1383 1383 238085 238085 238085 250000 250000 238085 110667 250000 110667 0 139333 98752 X MASSACHUSETTS INSTITUTE OF TECHNOLO 77 MASSACHUSETTS AVENUE CAMBRIDGE MA 02139 NONE PC TO FURTHER DONEE ORGANIZATION'S EXEMPT PURPOSE 250000 250000 14 33593 14 83559 117152 117152 false false false false false false false false false false ACCOUNTING FEES 13318 13318 0 0 DELAWARE DOES NOT REQUIRE A COPY OF FORM 990-PF BE PROVIDED. 16,150 SHS JOHNSON & JOHNSON STOCK 2531351 2531351 1,500 SHS INVESCO QQQ TR SER 1 ETF FMV 614280 614280 6,000 SHS PROSHARES TR LARGE CAP CORE FMV 328620 328620 PENALTIES 15728 PRIOR YEAR FEDERAL EXCISE TAXES 54873 REGISTERED AGENT FEE 1053 1053 FEDERAL INCOME TAX PAYABLE 7822 2144 CA RRF-1 FEES 150 150