| First Evangelical Free Church of Fullerton | Other Services (except Public Administration) | $669,170 | $782,392 | 52 | N/A |  AI Deep Dive |
| Colettes Catering and Specialty Cakes | Accommodation and Food Services | $660,961 | $667,426 | 101 | $18.9M | AI Deep Dive |
| Grace Korean Church at Norwalk | Other Services (except Public Administration) | $660,400 | $439,839 | 100 | N/A | AI Deep Dive |
| Knowles Security Inc. | Administrative and Support and Waste Management | $659,085 | $665,804 | 69 | $10.1M | AI Deep Dive |
| Cwe | Professional, Scientific, and Technical Services | $655,867 | $659,529 | 29 | <$5M | AI Deep Dive |
| Knowles Security Inc. | Administrative and Support and Waste Management | $651,790 | $660,028 | 75 | $11.0M | AI Deep Dive |
| Accurate Laminated Products INC | Construction | $650,000 | $653,758 | 60 | $18.9M | AI Deep Dive |
| Fullerton Lounge Inc. | Accommodation and Food Services | $646,200 | $649,050 | 81 | $14.4M | AI Deep Dive |
| G. B. Cooke, Inc. | Construction | $634,773 | $641,520 | 22 | $6.8M | AI Deep Dive |
| Chapman Coast Roof Co., INC | Construction | $618,700 | $630,747 | 23 | $7.6M | AI Deep Dive |
| Dnb Engineering, Inc. | Professional, Scientific, and Technical Services | $610,800 | $615,402 | 45 | $9.1M | AI Deep Dive |
| Fullerton Spaghetti Restaurant Inc. | Accommodation and Food Services | $609,662 | $613,905 | 104 | $18.5M | AI Deep Dive |
| G. B. Cooke, Inc. | Construction | $604,200 | $611,335 | 31 | $9.6M | AI Deep Dive |
| Thunderbolt Manufacturing INC | Manufacturing | $600,000 | $608,959 | 32 | $7.8M | AI Deep Dive |
| Thunderbolt Manufacturing Inc. | Manufacturing | $600,000 | $603,995 | 42 | $10.3M | AI Deep Dive |
| Thrift Experience INC | Retail Trade | $599,995 | $0 | 70 | $13.3M | AI Deep Dive |
| Rutabegorz, Inc. | Accommodation and Food Services | $598,651 | $605,933 | 40 | $7.1M | AI Deep Dive |
| Contract Carpet Corp. | Wholesale Trade | $598,000 | $603,751 | 40 | $12.3M | AI Deep Dive |
| Ace Restoration & Waterproofing, INC | Construction | $591,000 | $597,444 | 23 | $7.8M | AI Deep Dive |
| Retina Consultants of Orange County | Health Care and Social Assistance | $589,943 | $600,126 | 46 | $14.4M | AI Deep Dive |
| Contract Carpet Corporation | Wholesale Trade | $581,700 | $587,501 | 33 | $10.1M | AI Deep Dive |
| Specceramics, Inc. | Wholesale Trade | $579,600 | $551,886 | 36 | $11.0M | AI Deep Dive |
| Classic Refrigeration So Cal, Inc. | Construction | $570,644 | $577,412 | 39 | $13.3M | AI Deep Dive |
| 1570 Fair Oaks LLC | Health Care and Social Assistance | $563,900 | $0 | 126 | $21.4M | AI Deep Dive |
| Huoyen International Inc. | Accommodation and Food Services | $563,700 | $567,521 | 112 | $35.0M | AI Deep Dive |