2026-04-22T10:52:52-07:00 2025-12-31 205935248 OneStop Financial Services Inc 20045 STEVENS CREEK BLVD STE 2G CUPERTINO CA 95014 990PF 2025-01-01 994801582 FANG OU FAMILY FOUNDATION FANG 8476308933 5019 SEASHELL PL SAN DIEGO CA 92130 FANG OU CEO 2026-04-22 true Kris Hung P01933892 4088731021 2025 2025-03-06 01:10:19Z X 702219 X 334705 2365 2365 2365 337070 2365 2365 800 800 6 6 10 10 816 10 806 14200 14200 15016 10 15006 322054 2355 2365 53618 53913 53913 243075 564834 648306 296693 618747 702219 0 X 296693 618747 296693 618747 296693 618747 296693 322054 618747 618747 33 33 33 33 0 false false false false false false false false true true false false false false true N/A FANG OU 8476308933 5019 SEASHELL PL SAN DIEGO CA 92130 false false false false false false false false false false false false false false false false false false false false false false FANG OU 2019 SEASHELL PL SAN DIEGO CA 92130 CEO 0.00 0 KAIHUA OU 2019 SEASHELL PL SAN DIEGO CA 92130 Secretary 0.00 0 HUIRONG DUAN 2019 SEASHELL PL SAN DIEGO CA 92130 CFO 0.00 0 NONE NONE 371594 8391 0 379985 0 379985 5700 374285 18714 18714 33 33 18681 18681 18681 15006 15006 18681 5556 5556 15006 0 15006 3675 3675 1881 0 1881 1881 X ASHLEY FALLS SCHOOL PTA 13030 ASHLEY FALLS DR SAN DIEGO CA 92130 PC CHARITY 1250 DEL MAR SCHOOLS EDUCATION FOUNDATIO 5333 OLD CARMEL VALLEY RD SAN DEIGO CA 92130 PC CHARITY 1200 NORTHWESTERN UNIVERSITY 633 CLARK ST EVANSTON IL 60208 PC CHARITY 1500 WIKIMEDIA FOUNDATION PO BOX 98204 WASHINGTON DC 20090 PC CHARITY 250 FIRST LIGHT EDUCATION FUND 245 Summer St Boston MA 02210 PC CHARITY 10000 14200 2365 2365 2365 false false false false false false false false false false X X 1 FANG OU 5019 SEASHELL PL SAN DIEGO CA 92130 334705 X X 1 500 SHARES APPLE INC 222705 2025-12-23 ACCOUNTING 800 0 0 800 ADVANCED MICRO DEVICES INC 24973 42832 APPLE INC 416157 457812 PDD HOLDINNG INC AMERICAN DEPOSITARY 24650 28348 ALPHABET INC CAP STK CL A 16800 31300 META PLATFORMS INC CLASS A COMMON STOCK 23054 23103 MICROSOFT CORP 19600 24181 VERIZON COMMUNICATIONS INC 39600 40730 Bank Service Fee 10 10 FEDERAL 6 6