| SCSoutheastern Concrete Products CO INC | Cayce | SC | Nonmetallic Mineral Product Manufacturing327331 | 20-99 | ◐ LIKELY ACTIVE |
| SCSouthern Concrete Materials-biltmore Plant | Asheville | NC | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| SMSouthern Machine & Fabrication CO | Cartersville | GA | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SDSouthwest Distributing CO | Mesa | AZ | Chemical Manufacturing325188 | 20-99 | ◐ LIKELY ACTIVE |
| SSSpartan Steel Coating | Monroe | MI | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
| SMSpecial Metals Welding Products Company | Newton | NC | Primary Metal Manufacturing331491 | 20-99 | ◐ LIKELY ACTIVE |
| SMSpecialty Materials | Lowell | MA | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| SRSpecialty Ring Products INC | Bensalem | PA | Fabricated Metal Product Manufacturing332111 | 20-99 | ◐ LIKELY ACTIVE |
| SFSpirit Fabs INC | Wrightstown | WI | Fabricated Metal Product Manufacturing332310 | 20-99 | ◐ LIKELY ACTIVE |
| SUS&s Urethane INC | Farina | IL | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| SOStar of the West Milling CO. | Quincy | MI | Food Manufacturing311211 | 20-99 | ◐ LIKELY ACTIVE |
| SOStar of the West Milling CO. | Ligonier | IN | Food Manufacturing311211 | 20-99 | ◐ LIKELY ACTIVE |
| SOStar of the West Milling Company | Willard | OH | Food Manufacturing311211 | 20-99 | ◐ LIKELY ACTIVE |
| STSta Technologies INC | Albuquerque | NM | Chemical Manufacturing325910 | 20-99 | ◐ LIKELY ACTIVE |
| SKSteel King Industries INC | Stevens Point | WI | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| SCStepan Company | Columbus | GA | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| SESterling Ethanol | Sterling | CO | Chemical Manufacturing325110 | 20-99 | ◐ LIKELY ACTIVE |
| SMSterling Machinery CO | Mena | AR | Fabricated Metal Product Manufacturing332710 | 20-99 | ◐ LIKELY ACTIVE |
| SSSterling Sintered Technologies INC | Winsted | CT | Fabricated Metal Product Manufacturing332117 | 20-99 | ◐ LIKELY ACTIVE |
| STStevens Towing Company INC | Yonges Island | SC | Transportation Equipment Manufacturing336611 | 20-99 | ◐ LIKELY ACTIVE |
| SEStewart Efi Ct LLC | Thomaston | CT | Fabricated Metal Product Manufacturing332119 | 20-99 | ◐ LIKELY ACTIVE |
| SUStockmeier Urethanes Usa, INC | Clarksburg | WV | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| STStrick Trailers LLC | Monroe | IN | Transportation Equipment Manufacturing336120 | 20-99 | ◐ LIKELY ACTIVE |
| SLStueken LLC | Fountain Inn | SC | Fabricated Metal Product Manufacturing332116 | 20-99 | ◐ LIKELY ACTIVE |
| SBSumitomo Bakelite North America, INC. | Manchester | CT | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
Sun Chemical CORP Amelia Plant | Amelia | OH | Chemical Manufacturing325130 | 20-99 | ◐ LIKELY ACTIVE |
| SDSun Drilling Products CORP | Belle Chasse | LA | Chemical Manufacturing325998 | 20-99 | ◐ LIKELY ACTIVE |
| SCSunnyside CORP | Wheeling | IL | Chemical Manufacturing325510 | 20-99 | ◐ LIKELY ACTIVE |
| SFSunrise Fiberglass of Minnesota LLC | Wyoming | MN | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| SSSun Steel Treating INC | South Lyon | MI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| SCSuperior Clay CORP | Uhrichsville | OH | Nonmetallic Mineral Product Manufacturing327120 | 20-99 | ◐ LIKELY ACTIVE |
| SDSuperior Diesel, INC. | Rhinelander | WI | Machinery Manufacturing333618 | 20-99 | ◐ LIKELY ACTIVE |
| SSSuper Steel Treating, INC. | Warren | MI | Fabricated Metal Product Manufacturing332811 | 20-99 | ◐ LIKELY ACTIVE |
| SCSupreme Casting | Stevensville | MI | Primary Metal Manufacturing331313 | 20-99 | ◐ LIKELY ACTIVE |
| SCS.u.s Cast Products INC. | Logansport | IN | Primary Metal Manufacturing331523 | 20-99 | ◐ LIKELY ACTIVE |
| SGSuzuki Garphyttan | South Bend | IN | Primary Metal Manufacturing331222 | 20-99 | ◐ LIKELY ACTIVE |
| SWS & W Ready Mix Concrete - Castle Hayne | Castle Hayne | NC | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| SWS & W Ready Mix Conway | Conway | SC | Nonmetallic Mineral Product Manufacturing327320 | 20-99 | ◐ LIKELY ACTIVE |
| SCSynray Corporation | Kenilworth | NJ | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| SISynthomer INC. | Chester | SC | Chemical Manufacturing325211 | 20-99 | ◐ LIKELY ACTIVE |
| SUSynthomer USA LLC | Roebuck | SC | Chemical Manufacturing325110 | 20-99 | ◐ LIKELY ACTIVE |
| TPTalladega Pattern & Aluminum Works INC | Talladega | AL | Primary Metal Manufacturing331524 | 20-99 | ◐ LIKELY ACTIVE |
| TBTamko Building Products LLC Rangeline Plant | Joplin | MO | Petroleum and Coal Products Manufacturing324122 | 20-99 | ◐ LIKELY ACTIVE |
| TSTampa Steel Erecting Company | Tampa | FL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| TCTank Connection - Oswego | Oswego | KS | Fabricated Metal Product Manufacturing332420 | 20-99 | ◐ LIKELY ACTIVE |
| TPTawas Plating CO | Tawas City | MI | Fabricated Metal Product Manufacturing332812 | 20-99 | ◐ LIKELY ACTIVE |
Team Industries - Detroit Lakes | Detroit Lakes | MN | Primary Metal Manufacturing331521 | 20-99 | ◐ LIKELY ACTIVE |
| TITechnic, INC. (engineered Powders Division) | Woonsocket | RI | Chemical Manufacturing325180 | 20-99 | ◐ LIKELY ACTIVE |
| TITeledyne Impulse | San Diego | CA | Computer and Electronic Product Manufacturing334417 | 20-99 | ◐ LIKELY ACTIVE |
| TATennessee Aluminum Processors INC | Gadsden | AL | Primary Metal Manufacturing331314 | 20-99 | ◐ LIKELY ACTIVE |