| SASenko Advance Components | Camarillo | CA | — | ◇ UNVERIFIED |
| SUSensus USA INC | Dubois | PA | — | ◇ UNVERIFIED |
| SISentinel Intelligence Group LLC | Brookpark | OH | — | ◇ UNVERIFIED |
| SBSeppi Brothers Concrete Products Corporation | Virginia | MN | — | ◇ UNVERIFIED |
| SMSerett Metalworks | Brooklyn | NY | — | ◇ UNVERIFIED |
| STSergio Tiscarreno Dba Bella Mouldings | Bell Gardens | CA | — | ◇ UNVERIFIED |
| SFSerpa Fabrication, INC. | Corpus Christi | TX | — | ◇ UNVERIFIED |
| SGSesolinc Grp, INC. | Statesboro | GA | — | ◇ UNVERIFIED |
| SISewell Industrial, INC. | Shelby | NC | — | ◇ UNVERIFIED |
| SFSfs Fabrication | Tulsa | OK | — | ◇ UNVERIFIED |
| SGS - G Concrete Company, Llc- Grantley Ave. Plant | Baltimore | MD | — | ◇ UNVERIFIED |
| SLSge LLC | Lincolnton | GA | — | ◇ UNVERIFIED |
| SLSge LLC | Lyons | GA | — | ◇ UNVERIFIED |
| SFShane Felter Industries | Uniontown | PA | — | ◇ UNVERIFIED |
| SFShane Fonseca | Westlake Village | CA | — | ◇ UNVERIFIED |
| SSShane Stone Inc. | Roseburg | OR | — | ◇ UNVERIFIED |
| SSShannon Street Pre-cast Facility | Chesapeake | VA | — | ◇ UNVERIFIED |
| SCShape CORP 144th Facility | Spring Lake | MI | — | ◇ UNVERIFIED |
| SCShape CORP 1900 Facility | Grand Haven | MI | — | ◇ UNVERIFIED |
| SSShape Steel | Liberty | MO | — | ◇ UNVERIFIED |
| STSharkey Technology Group INC. Dba C & T Machining | Burbank | CA | — | ◇ UNVERIFIED |
| SESharper Edge | Kansas City | MO | — | ◇ UNVERIFIED |
| SIShatone, INC. | Whitesburg | GA | — | ◇ UNVERIFIED |
| SMShaver Manufacturing CO INC | Graettinger | IA | — | ◇ UNVERIFIED |
| SFShaw Fabrication & Manufacturing, INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| SFShawnee Fabricators | Shawnee | OK | — | ◇ UNVERIFIED |
| SFShawnee Fabricators, INC. | Shawnee | OK | — | ◇ UNVERIFIED |
| SSShawnee Steel Company | Shawnee | OK | — | ◇ UNVERIFIED |
| SPShaw Process Fabricators | West Monroe | LA | — | ◇ UNVERIFIED |
| SSShaw Sss Fabricators | Addis | LA | — | ◇ UNVERIFIED |
| SCShea Concrete Production INC. | Nottingham | NH | — | ◇ UNVERIFIED |
| SCShea Concrete Products | Nottingham | NH | — | ◇ UNVERIFIED |
| SMSheet Metal Specialists | Riverside | CA | — | ◇ UNVERIFIED |
| SSShelby Steel LLC | Pell City | AL | — | ◇ UNVERIFIED |
| SSShelco Steel Works INC | South Holland | IL | — | ◇ UNVERIFIED |
| SMSheldon Mechanical Corporation | Santa Clarita | CA | — | ◇ UNVERIFIED |
| SSShenkle Steel LLC | Madison | VA | — | ◇ UNVERIFIED |
| SCSherman-dixie Concrete Industries INC | Glendale | KY | — | ◇ UNVERIFIED |
| SRSherman Ready Mix Concrete Co.(n.birmingham) | Birmingham | AL | — | ◇ UNVERIFIED |
| SMSherwood Manufacturing Corporation | Northport | MI | — | ◇ UNVERIFIED |
| SBShew Brothers INC. | Marion | IL | — | ◇ UNVERIFIED |
| SPSheyenne Properties LLC | Cooperstown | ND | — | ◇ UNVERIFIED |
| STSheyenne Tooling & Mfg CO | Cooperstown | ND | — | ◇ UNVERIFIED |
| SAShield Agricultural Equipment INC. | Hutchinson | KS | — | ◇ UNVERIFIED |
| SMShiner Manufacturing INC. | Shiner | TX | — | ◇ UNVERIFIED |
| SUShintone USA INC. | Flowery Branch | GA | — | ◇ UNVERIFIED |
| SBShollenbarger - Borella INC Dba Golden State Steel | Fowler | CA | — | ◇ UNVERIFIED |
| SSShondel's Stone Creations | Centerville | IA | — | ◇ UNVERIFIED |
| SCShope Concrete Products CO | Puyallup | WA | — | ◇ UNVERIFIED |
| SIShoreline Industries, INC. | Portsmouth | VA | — | ◇ UNVERIFIED |
| SSShoreline Stone Manufacturing Carib, INC. | Largo | FL | — | ◇ UNVERIFIED |
| SMShoup Manufacturing Co., INC. | Kankakee | IL | — | ◇ UNVERIFIED |
| SMShow Me Welding and Fabrication, LLC | Curryville | MO | — | ◇ UNVERIFIED |
| SHS & H Welding INC Dba S & H Metals | Sacramento | CA | — | ◇ UNVERIFIED |
| SASiag Aerisyn LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| SLSic Lazaro US INC | Milwaukee | WI | — | ◇ UNVERIFIED |
| SMSieckmann Metal Fab INC | Eagle Creek | OR | — | ◇ UNVERIFIED |
| SCSierra CIS, Inc. | Placerville | CA | — | ◇ UNVERIFIED |
| SPSierra Pacific | Oakland | CA | — | ◇ UNVERIFIED |
| SSSierra Stainless INC. | Sparks | NV | — | ◇ UNVERIFIED |
| SFSi Funeral Services | Saint Joseph | MO | — | ◇ UNVERIFIED |
| SSSigma Steel Incorporated | Bedford | IN | — | ◇ UNVERIFIED |
| SASika Albuquerque | Albuquerque | NM | — | ◇ UNVERIFIED |
| SCSika Corperation | Riverside | CA | — | ◇ UNVERIFIED |
| SCSika Corporation | Conyers | GA | — | ◇ UNVERIFIED |
| SCSilgan Containers Mfg CORP | Plover | WI | — | ◇ UNVERIFIED |
| SSSilver Star Manufacturing LLC | Brainerd | MN | — | ◇ UNVERIFIED |
| SESilvz Equipment LLC | Tempe | AZ | — | ◇ UNVERIFIED |
| SVSimerly Vaults, INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| SISimko Industrial Fabricators | Hammond | IN | — | ◇ UNVERIFIED |
| SPSimper Properties, LLC | Vernal | UT | — | ◇ UNVERIFIED |
| SPSimple Pulse LLC | Monroe | OR | — | ◇ UNVERIFIED |
| SCSimplex Construction Supplies | Blaine | MN | — | ◇ UNVERIFIED |
| SMSimply Mfg (former) | Prairie Du Sac | WI | — | ◇ UNVERIFIED |
| SSSimpson Strong Tie | Riverside | CA | — | ◇ UNVERIFIED |
| SSSimpson Strong Tie CORP | Stockton | CA | — | ◇ UNVERIFIED |
| SMSincere Metal Works | Amesbury | MA | — | ◇ UNVERIFIED |
| SISindr Industries Inc | Mt Clemens | MI | — | ◇ UNVERIFIED |
| SSSingle Source INC | Tallahassee | FL | — | ◇ UNVERIFIED |
| SSSirco Systems, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| SSS.i. Shreveport Corporation | Shreveport | LA | — | ◇ UNVERIFIED |
| SISitemaster, INC. | Slidell | LA | — | ◇ UNVERIFIED |
| SRSite Resources, LLC | Raleigh | NC | — | ◇ UNVERIFIED |
| SCSix C Fabrication INC | Winnfield | LA | — | ◇ UNVERIFIED |
| SLSjjr, LLC | Taunton | MA | — | ◇ UNVERIFIED |
| SISkaggs Iron Works, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| SKS & K Machineworks Company, INC. | Theodore | AL | — | ◇ UNVERIFIED |
| SCSkrlin Coating & Blasting INC. | Niagara Falls | NY | — | ◇ UNVERIFIED |
| SDSkycomm Development, INC | Helena | MT | — | ◇ UNVERIFIED |
 Skyline Steel Berkeley Facility | Huger | SC | — | ◇ UNVERIFIED |
| Skyline Steel INC. | San Francisco | CA | — | ◇ UNVERIFIED |
| Skyline Steel, INC. | Chandler | AZ | — | ◇ UNVERIFIED |
| SLSlabhaus LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| SHSlk Holdings LLC | Lincoln | NE | — | ◇ UNVERIFIED |
| SLSmart Laser & Manufacturing LLC | Forney | TX | — | ◇ UNVERIFIED |
| SSSmede-son Steel & Building Supply Company | Brighton | MI | — | ◇ UNVERIFIED |
| SISme Industries, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| SISme Industries, Incorporated | West Jordan | UT | — | ◇ UNVERIFIED |
| SSSme Steel | Pocatello | ID | — | ◇ UNVERIFIED |
| SSSme Steel Contractors, INC. | West Jordan | UT | — | ◇ UNVERIFIED |
