2026-05-14T19:37:53-07:00 2025-12-31 371420474 Fontanello Duffield & Otake LLP 111 Pine Street Suite 1750 San Francisco CA 94111 990PF 2025-01-01 852286751 KahleAustin Family Foundation KAHL 2074155714 319 Main Street Biddeford ME 04005 Brewster Kahle Chairman 2026-05-14 true Erik Satow P01410341 4159830200 2025 2025-03-06 01:10:19Z X 128340887 X X 1460171 1460171 449629 14615713 1706798 33231 1943031 3166969 21420 10660 311917 311917 2092314 1040 1040 2426691 311917 11700 0 0 2426691 311917 11700 -483660 2855052 93990 482111 482111 2207000 5938562 5938562 7895 30 7895 7895 112663283 18611074 18611074 89546686 89546686 3714309 13754559 13754559 118678612 128340887 128340887 780 11540 780 11540 X 118677832 128329347 118677832 128329347 118678612 128340887 118677832 -483660 10135175 128329347 128329347 Sales of Publicly Traded Securities P 2000-01-01 2025-12-31 13307964 12858335 449629 449629 Sale of Donated Stock D 2000-01-01 2025-12-31 1307749 50580 1257169 1257169 1706798 39685 39685 39685 947599 947599 907914 907914 false false false false false false false true true DE true false false false false true N/A Peter Montano 2074155714 319 Main Street Biddeford ME 04005 false false false false false false false false false false false false false false false false false false false false false false Brewster Kahle 319 Main Street Biddeford ME 94129 Chairman 2.00 0 Mary K Austin 319 Main Street Biddeford ME 04005 Director 2.00 0 Caslon Kahle 319 Main Street Biddeford ME 04005 Director 1.00 0 Logan Kahle 319 Main Street Biddeford ME 04005 Director 1.00 0 NONE Morgan Stanley 555 California Street 14th Fl San Francisco CA 94104 Investment Management 311917 117305661 5597886 0 122903547 0 122903547 1843553 121059994 6053000 6053000 39685 39685 6013315 6013315 6013315 11700 11700 6013315 639806 68247 119188 17430281 18257522 11700 0 11700 6001615 6001615 12255907 0 12255907 12255907 Brewster Kahle Mary K Austin X 14 1460171 18 449629 Return of Capital 14 33231 1943031 1943031 false false false false false false false false false false Accounting, Bookkeeping & Tax Prep 21420 0 0 10660 Stocks 89546686 89546686 18611074 18611074 Mutual Funds FMV 5723086 5723086 Alternatives FMV 8031473 8031473 Office Supplies & Software 810 810 Other Business Expenses 230 230 Return of Capital 33231 Investment Management Fees 311917 311917 0 0 Excise Tax 2092314