 Kifco, INC | Havana | Machinery Manufacturing | 333111 | — | ● ACTIVE |
| CMCrm Materials INC | Mason City | Nonmetallic Mineral Product Manufacturing | 327320 | — | ◐ LIKELY ACTIVE |
| OIOnken's Inc - Easton | Easton | Fabricated Metal Product Manufacturing | 332312 | 20–99 | ◐ LIKELY ACTIVE |
| WPWeaver Popcorn Bulk LLC | Forest City | Food Manufacturing | 311919 | — | ◐ LIKELY ACTIVE |
| HMHavana Metal Culverts INC | Havana | Primary Metal Manufacturing | 331221 | — | ◇ UNVERIFIED |
| IHIntermet Havana Foundry | Havana | Primary Metal Manufacturing | 331511 | — | ◇ UNVERIFIED |
| SUSulberg USA INC | Havana | Fabricated Metal Product Manufacturing | 332111 | — | ◇ UNVERIFIED |
| 2E25895 E Cr 2560n | Manito | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| AEAmerican Ethanol INC | San Jose | Chemical Manufacturing | 325193 | — | ◇ UNVERIFIED |
| BEBolt Express INC | Havana | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| CRCanton Ready-mix INC | Havana | Nonmetallic Mineral Product Manufacturing | 327320 | — | ◇ UNVERIFIED |
| CCCemstone Concrete Materials | Mason City | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| CGCountry General | Manito | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| CFCrescent Forge & Shovel Co-div of Eric | Havana | Transportation Equipment Manufacturing | 336390 | — | ◇ UNVERIFIED |
| DIDarling Ingredients INC | Mason City | Food Manufacturing | 311111 | — | ◇ UNVERIFIED |
| DIDarling Ingredients INC. | Mason City | Food Manufacturing | 311613 | — | ◇ UNVERIFIED |
| EREmerald Renewable Energy-havana LLC | Havana | Chemical Manufacturing | 325193 | — | ◇ UNVERIFIED |
| FLFinish Line Transportation | San Jose | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| HEHavana Ethanol LLC | Havana | Chemical Manufacturing | 325193 | — | ◇ UNVERIFIED |
| HGHorizon Genetics LLC | Mason City | Food Manufacturing | 311119 | — | ◇ UNVERIFIED |
| TSTcr Systems, L.l.c. | Havana | Fabricated Metal Product Manufacturing | 332322 | — | ◇ UNVERIFIED |
| VPVcna Prairie LLC Mason City Windfarm Portable | Mason City | Miscellaneous Manufacturing | 339999 | — | ◇ UNVERIFIED |
| WPWeaver Popcorn Company, INC. | Forest City | Food Manufacturing | 311999 | — | ◇ UNVERIFIED |
