Adams Thermal Systems INC | Canton | SD | Fabricated Metal Product Manufacturing332313 | 100-499 | ● ACTIVE |
| AEApplied Engineering, INC. | Yankton | SD | Fabricated Metal Product Manufacturing332710 | 100-499 | ● ACTIVE |
Dakota Bodies, LLC | Watertown | SD | Fabricated Metal Product Manufacturing332111 | 100-499 | ● ACTIVE |
Rosenbauer South Dakota, LLC | Lyons | SD | Transportation Equipment Manufacturing336120 | 100-499 | ● ACTIVE |
| DRDell Rapids Custom Trailers, INC. | Dell Rapids | SD | Transportation Equipment Manufacturing336212 | 20-99 | ● ACTIVE |
Trail-eze, INC. | Mitchell | SD | Transportation Equipment Manufacturing336212 | 20-99 | ● ACTIVE |
Trail King Industries, INC | Mitchell | SD | Transportation Equipment Manufacturing336212 | — | ● ACTIVE |
| AMAviation Manufacturing Group, LLC DBA The Freeman Company | Yankton | SD | Transportation Equipment Manufacturing336413 | 20-99 | ● ACTIVE |
Carzdeluxe Designs LLC | Rapid City | SD | Transportation Equipment Manufacturing336360 | — | ● ACTIVE |
D & H Hansen INC | Letcher | SD | Transportation Equipment Manufacturing336999 | — | ● ACTIVE |
| OSOrion Strike Technologies INC. | Parker | SD | Transportation Equipment Manufacturing336413 | — | ● ACTIVE |
Wareing Trailers Belle Fourche LLC | Sturgis | SD | Transportation Equipment Manufacturing336212 | — | ● ACTIVE |
| LML & M Radiator, INC. | Yankton | SD | Transportation Equipment Manufacturing336211 | 100-499 | ◐ LIKELY ACTIVE |
| WTWilson Trailer Company | Lennox | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| HIHorton Industries, INC. - West | Britton | SD | Transportation Equipment Manufacturing336390 | — | ◐ LIKELY ACTIVE |
Trail-eze INC. | Mitchell | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| BFBaldwin Filters INC. | Yankton | SD | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| HTHendrickson Trailer Suspension Systems | Mitchell | SD | Transportation Equipment Manufacturing336330 | — | ◇ UNVERIFIED |
| TLTerex Load King Div | Elk Point | SD | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| TKTrail King Inds INC | Mitchell | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| WTWilson Trailer Company | Yankton | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| MRMidwest Railcar Repair INC | Brandon | SD | Transportation Equipment Manufacturing336510 | — | ◐ LIKELY ACTIVE |
| TITrail-eze INC | Corsica | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| WTWilson Trailer Yankton | Yankton | SD | Machinery Manufacturing333111 | 100-499 | ◐ LIKELY ACTIVE |
Dakota Bodies, LLC | Watertown | SD | Transportation Equipment Manufacturing336211 | — | ◐ LIKELY ACTIVE |
| TITrail-eze INC. | Platte | SD | Transportation Equipment Manufacturing336212 | — | ◐ LIKELY ACTIVE |
| ACArctic Cat INC. | Madison | SD | Transportation Equipment Manufacturing336999 | — | ◇ UNVERIFIED |
| DMDakota Mfg CO INC | Corsica | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| DMDakota Mfg CO INC | Platte | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| FCFreeman CO Amg LLC | Yankton | SD | Transportation Equipment Manufacturing336413 | — | ◇ UNVERIFIED |
| PIPolaris Industries, INC. Spearfish (former) | Spearfish | SD | Transportation Equipment Manufacturing336991 | — | ◇ UNVERIFIED |
| SESpartan Erv | Brandon | SD | Transportation Equipment Manufacturing336211 | — | ◇ UNVERIFIED |
| TKTrail King Industries | Yankton | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| TKTrail King Industries | Yankton | SD | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| APAFCO Performance Group dba Legend Suspensions | Sturgis | SD | Transportation Equipment Manufacturing336211 | 20-99 | ◐ LIKELY ACTIVE |
| ADAmerican Defense Builders Trust | Hot Springs | SD | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| CTCustom Truck One Source - Elk Point | Elk Point | SD | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| FYFiltration Yankton | Yankton | SD | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| HIHorton, Inc Britton | Britton | SD | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| MAMatthew a Ramsey | Ellsworth Afb | SD | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| MMMatthew Moranor | Hot Springs | SD | Transportation Equipment Manufacturing336411 | — | ◐ LIKELY ACTIVE |
| PHParker Hannifin | Yankton | SD | Transportation Equipment Manufacturing336390 | 100-499 | ◐ LIKELY ACTIVE |
| PSPonderosa Services, INC | Mitchell | SD | Transportation Equipment Manufacturing336999 | — | ◐ LIKELY ACTIVE |
| SLSentry LLC Watertown | Watertown | SD | Transportation Equipment Manufacturing336214 | 100-499 | ◐ LIKELY ACTIVE |
| SBSpartan - Brandon | Brandon | SD | Transportation Equipment Manufacturing336120 | 100-499 | ◐ LIKELY ACTIVE |
| SSSRAM - Spearfish | Spearfish | SD | Transportation Equipment Manufacturing336991 | 20-99 | ◐ LIKELY ACTIVE |
| TMTKI Mitchell West | Mitchell | SD | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |
| TCTRAIL-EZE Corsica | Corsica | SD | Transportation Equipment Manufacturing336212 | 1-19 | ◐ LIKELY ACTIVE |
| TPTRAIL-EZE Platte | Platte | SD | Transportation Equipment Manufacturing336212 | 1-19 | ◐ LIKELY ACTIVE |
| WTWilson Trailer Lennox | Lennox | SD | Transportation Equipment Manufacturing336212 | 100-499 | ◐ LIKELY ACTIVE |