Rocket Ems, INC. | Santa Clara | — | ● ACTIVE |
Rocstor, INC. | San Fernando | 1–19 | ● ACTIVE |
Rouchon Industries INC | Anaheim | — | ● ACTIVE |
Royal Communications International, INC. | San Diego | 1–19 | ● ACTIVE |
| RFRoyal Flex Circuits, INC | Santa Fe Springs | — | ● ACTIVE |
| RIRtec-instruments INC | San Jose | — | ● ACTIVE |
Ruckus Wireless, LLC | Sunnyvale | — | ● ACTIVE |
| RIRugged Information Technology Equipment Corporation | Simi Valley | — | ● ACTIVE |
Rugged Systems INC. | Poway | — | ● ACTIVE |
Safran Electronics & Defense, Avionics Usa, LLC | Irvine | — | ● ACTIVE |
Sambanova Systems, INC. | Palo Alto | — | ● ACTIVE |
San Francisco Circuits, INC. | San Mateo | 1–19 | ● ACTIVE |
Sanmina Corporation | Costa Mesa | — | ● ACTIVE |
Santa Barbara Infrared, INC. | Santa Barbara | — | ● ACTIVE |
| SESchwien Engineering, INC. | Pomona | — | ● ACTIVE |
Scimage INC | Los Altos | — | ● ACTIVE |
Seagate Technology LLC | Fremont | — | ● ACTIVE |
Secure Communication Systems, INC. | Santa Ana | — | ● ACTIVE |
Semler Scientific INC | Campbell | — | ● ACTIVE |
Senseeker CORP | Goleta | 20–99 | ● ACTIVE |
Sensit Ventures, INC. | Davis | 1–19 | ● ACTIVE |
Sensor Concepts, LLC | Livermore | — | ● ACTIVE |
| SSSensor Systems, INC. | Chatsworth | 100–499 | ● ACTIVE |
Serflex LLC | Canoga Park | — | ● ACTIVE |
Sheldon Instruments INC. | La Mesa | 1–19 | ● ACTIVE |
Sidus Solutions, LLC | San Diego | — | ● ACTIVE |
Sierra Instruments, INC. | Monterey | — | ● ACTIVE |
Signova CORP | Folsom | 1–19 | ● ACTIVE |
Sigray, INC. | Benicia | — | ● ACTIVE |
Silc Technologies, INC | Monrovia | — | ● ACTIVE |
| SMSixpoint Materials, INC. | Buellton | — | ● ACTIVE |
Sk Hynix Nand Product Solutions CORP. | Rancho Cordova | — | ● ACTIVE |
| SSSkyworks Solutions, Inc. - Irvine, CA | Irvine | 500+ | ● ACTIVE |
Soilmoisture Equipment CORP. | Goleta | — | ● ACTIVE |
Solid State Devices, INC | La Mirada | 100–499 | ● ACTIVE |
| STSonnet Technologies, INC. | Lake Forest | 20–99 | ● ACTIVE |
Specialized Coating Services, LLC | Fremont | — | ● ACTIVE |
Special Services Group, LLC | Marina | 1–19 | ● ACTIVE |
Spec Tool Company | Santa Fe Springs | — | ● ACTIVE |
Spectral Labs Incorporated | San Diego | 20–99 | ● ACTIVE |
Spectra-mat INC | Watsonville | — | ● ACTIVE |
| SISpectrolab, INC. | Sylmar | — | ● ACTIVE |
| SASpectrum Assembly INC | Carlsbad | — | ● ACTIVE |
Standard Biotools INC | South San Francisco | — | ● ACTIVE |
Stardot Technologies, Incorporated | Buena Park | 1–19 | ● ACTIVE |
Stephen Paul Mangum | Temecula | 1–19 | ● ACTIVE |
Stonefly INC | Castro Valley | 1–19 | ● ACTIVE |
Strategic Robotic Systems, INC. | San Diego | — | ● ACTIVE |
| SIStratio INC | San Jose | — | ● ACTIVE |
Strike Technology, INC. | Carson | 1–19 | ● ACTIVE |