| ACAfton Chemical Corporation | Sauget, IL | Petroleum and Coal Products Manufacturing324191 | 100–499 | ● ACTIVE |
| ASAlton Steel INC | Alton, IL | Primary Metal Manufacturing331110 | 100–499 | ● ACTIVE |
Argo Products Company | Saint Louis, MO | Fabricated Metal Product Manufacturing332618 | 20–99 | ● ACTIVE |
Aurora Technologies INC | Pacific, MO | Plastics and Rubber Products Manufacturing326113 | 100–499 | ● ACTIVE |
Belleville Shoe Manufacturing Company | Belleville, IL | Leather and Allied Product Manufacturing316210 | 100–499 | ● ACTIVE |
Central Mine Equipment Company | Earth City, MO | Machinery Manufacturing333120 | 100–499 | ● ACTIVE |
Clemco Industries CORP. | Washington, MO | Fabricated Metal Product Manufacturing332439 | 100–499 | ● ACTIVE |
| DTDavis Tool & Die Co., INC. | Fenton, MO | Machinery Manufacturing333511 | 20–99 | ● ACTIVE |
| DSDdp Specialty Electronic Materials US INC the Riverside Plant | Pevely, MO | Plastics and Rubber Products Manufacturing326140 | 20–99 | ● ACTIVE |
Donaldson Company, INC. | Chesterfield, MO | Machinery Manufacturing333413 | 20–99 | ● ACTIVE |
| ESElementis Specialties INC | Saint Louis, MO | Chemical Manufacturing325131 | 20–99 | ● ACTIVE |
Global Surgical Corporation | Saint Louis, MO | Miscellaneous Manufacturing339112 | 20–99 | ● ACTIVE |
| GPGreen Plains Madison LLC | Madison, IL | Chemical Manufacturing325193 | 20–99 | ● ACTIVE |
Handicare USA LLC | Maryland Heights, MO | Miscellaneous Manufacturing339112 | 100–499 | ● ACTIVE |
| HSHeidtman Steel Products INC | Granite City, IL | Primary Metal Manufacturing331110 | 20–99 | ● ACTIVE |
Huggins Metal Finishing, INC. | Sullivan, MO | Fabricated Metal Product Manufacturing332813 | 20–99 | ● ACTIVE |
Imperial Ornamental Metal Co., INC. | Fenton, MO | Fabricated Metal Product Manufacturing332312 | 20–99 | ● ACTIVE |
J. K. Pulley Company, INC. | Saint Louis, MO | Primary Metal Manufacturing331511 | 20–99 | ● ACTIVE |
Laclede Chain Manufacturing Company, LLC | Fenton, MO | Fabricated Metal Product Manufacturing332618 | 1–19 | ● ACTIVE |
Lowell Manufacturing Company | Pacific, MO | Fabricated Metal Product Manufacturing332322 | 20–99 | ● ACTIVE |
| MCMetal Container Corporation | Arnold, MO | Fabricated Metal Product Manufacturing332431 | 100–499 | ● ACTIVE |
Patriot Machine, INC. | Saint Charles, MO | Transportation Equipment Manufacturing336413 | 100–499 | ● ACTIVE |
Precision Components & Assemblies, INC | Saint Peters, MO | Primary Metal Manufacturing331513 | 1–19 | ● ACTIVE |
Quest Specialty Products INC | Bridgeton, MO | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
| RIRoho INC | Belleville, IL | Plastics and Rubber Products Manufacturing326199 | — | ● ACTIVE |
Sentio Biosciences LLC | Maryland Heights, MO | Chemical Manufacturing325411 | 20–99 | ● ACTIVE |
Seyer Industries, INC. | Saint Peters, MO | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Siemens Manufacturing CO INC | Freeburg, IL | Computer and Electronic Product Manufacturing334416 | 100–499 | ● ACTIVE |
| SSSteris St. Louis | Saint Louis, MO | Chemical Manufacturing325611 | 100–499 | ● ACTIVE |
Stroco Manufacturing, INC. | Hazelwood, MO | Transportation Equipment Manufacturing336413 | 100–499 | ● ACTIVE |
| SBStupp Bros., INC. | Saint Louis, MO | Primary Metal Manufacturing331210 | 20–99 | ● ACTIVE |
Tech Manufacturing, LLC | Wright City, MO | Fabricated Metal Product Manufacturing332710 | 20–99 | ● ACTIVE |
The Carondelet Foundry Corporation | Pevely, MO | Primary Metal Manufacturing331513 | — | ● ACTIVE |
The Gateway CO of Missouri, LLC | Saint Louis, MO | Fabricated Metal Product Manufacturing332312 | 1–19 | ● ACTIVE |
| TMToyota Motor Mfg Missouri INC | Troy, MO | Primary Metal Manufacturing331316 | 500+ | ● ACTIVE |
| UPUS Polymers Accurez LLC | Saint Louis, MO | Chemical Manufacturing325211 | 20–99 | ● ACTIVE |
Weg Transformers USA LLC | Washington, MO | Electrical Equipment, Appliance & Component Manufacturing335311 | 100–499 | ● ACTIVE |
Western Ready-mix, INC | Wentzville, MO | Nonmetallic Mineral Product Manufacturing327320 | 20–99 | ● ACTIVE |
Willerding Acquisition CORP. | O Fallon, MO | Fabricated Metal Product Manufacturing332710 | — | ● ACTIVE |
Wrymark, INC. | Saint Louis, MO | Miscellaneous Manufacturing339113 | — | ● ACTIVE |
| AMAce Manufacturing & Parts CO | Sullivan, MO | Machinery Manufacturing333924 | 20–99 | ● ACTIVE |
| ACAerospace Composite Center, LLC | Hazelwood, MO | Computer and Electronic Product Manufacturing334511 | 500+ | ● ACTIVE |
Affton Fabricating and Welding Co., INC. | Sauget, IL | Fabricated Metal Product Manufacturing332312 | — | ● ACTIVE |
Alpha Foundry CO | Wright City, MO | Primary Metal Manufacturing331522 | — | ● ACTIVE |
| APAmerican Pulverizer CO | Saint Louis, MO | Machinery Manufacturing333131 | 20–99 | ● ACTIVE |
| AHAmerica's Heartland Packing | Wright City, MO | Food Manufacturing311611 | 500+ | ● ACTIVE |
Atro Engineered Systems, INC. | Saint Clair, MO | Plastics and Rubber Products Manufacturing326199 | — | ● ACTIVE |
Austin Machine CO | O Fallon, MO | Fabricated Metal Product Manufacturing332312 | — | ● ACTIVE |
| AIAvtask, INC. | Wright City, MO | Computer and Electronic Product Manufacturing334419 | — | ● ACTIVE |
Basler Electric Company, LLC | Highland, IL | Computer and Electronic Product Manufacturing334419 | — | ● ACTIVE |