| RCRayvio Corporation | Hayward | — | ◇ UNVERIFIED |
| RCReadytech CORP | Alameda | — | ◇ UNVERIFIED |
| RURh Usa, INC | Livermore | — | ◇ UNVERIFIED |
| RCRoyole Corporation | Fremont | — | ◇ UNVERIFIED |
| SBSartorius Bioanalytical Instruments, INC. | Fremont | — | ◇ UNVERIFIED |
 Seagate Technology LLC | Fremont | — | ◇ UNVERIFIED |
| SSSeaway Semiconductor, INC | Livermore | — | ◇ UNVERIFIED |
| SISemicat INC | Fremont | — | ◇ UNVERIFIED |
| SCSensor Control Corporation Dba Gentra and Linear Labs | Fremont | — | ◇ UNVERIFIED |
| SGSequlite Genomics US INC | Pleasanton | — | ◇ UNVERIFIED |
| SGSequlite Genomics US INC | Dublin | — | ◇ UNVERIFIED |
| SLSerinus Labs INC C/o Wework | Berkeley | — | ◇ UNVERIFIED |
| SHShahab Hasan Jafri | Fremont | — | ◇ UNVERIFIED |
| SSShimadzu Scientific Instrument | Pleasanton | — | ◇ UNVERIFIED |
| SISigmatron International INC | Union City | — | ◇ UNVERIFIED |
| SISilevo, INC Dba Solarcity Corporation | Fremont | — | ◇ UNVERIFIED |
| SISipix Imaging INC | Fremont | — | ◇ UNVERIFIED |
| SMSmart Modular Technologies | Fremont | — | ◇ UNVERIFIED |
| SMSmart Modular Technology | Newark | — | ◇ UNVERIFIED |
| SDSmiths Detection INC | Newark | — | ◇ UNVERIFIED |
| SSolaria | Fremont | — | ◇ UNVERIFIED |
| SSolectron-california | Fremont | — | ◇ UNVERIFIED |
| SMSolta Medical, INC. | Hayward | — | ◇ UNVERIFIED |
| SISolyndra, INC | Fremont | — | ◇ UNVERIFIED |
| SISolyndra, INC | Fremont | — | ◇ UNVERIFIED |
 Sonic Manufacturing Technologies | Fremont | — | ◇ UNVERIFIED |
| SCSparqtron CORP | Fremont | — | ◇ UNVERIFIED |
| SMSpin Memory INC | Fremont | — | ◇ UNVERIFIED |
| SMSpire Manufaturing INC | Fremont | — | ◇ UNVERIFIED |
| SHSrm/pccp Harbor Bay Associates | Alameda | — | ◇ UNVERIFIED |
| SCStats Chippac INC | Fremont | — | ◇ UNVERIFIED |
| STSuba Technology INC | Fremont | — | ◇ UNVERIFIED |
| SMSun Microsystems | Newark | — | ◇ UNVERIFIED |
| SESunrise/titan Electronics, INC | Fremont | — | ◇ UNVERIFIED |
| SMSuper Micro Computer, INC. | Fremont | — | ◇ UNVERIFIED |
| TFTactical Fabs INC | Fremont | — | ◇ UNVERIFIED |
| TPTandem Pv INC INC | Fremont | — | ◇ UNVERIFIED |
| TTechlink | Fremont | — | ◇ UNVERIFIED |
| TITesla INC | Fremont | — | ◇ UNVERIFIED |
| TTherm-x | Hayward | — | ◇ UNVERIFIED |
| TOTherm-x of California INC | Hayward | — | ◇ UNVERIFIED |
| TSThe Smtc Manufacturing Corporation | Fremont | — | ◇ UNVERIFIED |
| TLThoratec LLC Dba Abbott | Pleasanton | — | ◇ UNVERIFIED |
| TETooltek Engineering Corporation | Fremont | — | ◇ UNVERIFIED |
| TPTopcon Pistioning Systems INC | Pleasanton | — | ◇ UNVERIFIED |
| TTTopcon Training Center | Livermore | — | ◇ UNVERIFIED |
| TAToshiba America Electronic Components INC | Livermore | — | ◇ UNVERIFIED |
 Tr Manufacturing LLC | Union City | — | ◇ UNVERIFIED |
 Ttm Technologies - Hayward/uni | Union City | — | ◇ UNVERIFIED |
| UGUltima Genomics | Fremont | — | ◇ UNVERIFIED |
