| LILittelfuse, INC. | Rosemont | IL | — | ◐ LIKELY ACTIVE |
| L2Location 2 / FNA | Fontana | CA | 20–99 | ◐ LIKELY ACTIVE |
| LMLockheed Martin Corporation US FL Clearwater Tampa Rd (1376) | Oldsmar | FL | 500+ | ◐ LIKELY ACTIVE |
| LLongview | Longview | WA | 20–99 | ◐ LIKELY ACTIVE |
| LCLoos & Co., Inc. Pomfret | Pomfret Center | CT | 100–499 | ◐ LIKELY ACTIVE |
| LMLoucks Mill | York | PA | 20–99 | ◐ LIKELY ACTIVE |
| LBLP Brown Florence | Florence | AL | 20–99 | ◐ LIKELY ACTIVE |
| LWLSM - Wauseon | Wauseon | OH | 1–19 | ◐ LIKELY ACTIVE |
| LLumsden-FLU | Lancaster | PA | 100–499 | ◐ LIKELY ACTIVE |
| LLLvs LLC | San Leandro | CA | 1–19 | ◐ LIKELY ACTIVE |
| LGLys Global Technology LLC | Avon | CT | — | ◐ LIKELY ACTIVE |
| MIMaccaferri, INC. | Hagerstown | MD | — | ◐ LIKELY ACTIVE |
| MWMachinery West INC | Boise | ID | — | ◐ LIKELY ACTIVE |
| MMaine | Kingfield | ME | 20–99 | ◐ LIKELY ACTIVE |
| MLMajestic Lighting INC | Gardena | CA | — | ◐ LIKELY ACTIVE |
| MWMajor Wire Guada Coma | Schertz | TX | 1–19 | ◐ LIKELY ACTIVE |
| MWMajor Wire Texas | Schertz | TX | 20–99 | ◐ LIKELY ACTIVE |
| MEManufacturers Equipment CO | Middletown | OH | — | ◐ LIKELY ACTIVE |
| MManufacturing | Willis | TX | 100–499 | ◐ LIKELY ACTIVE |
| MManufacturing | Brooksville | FL | 20–99 | ◐ LIKELY ACTIVE |
| MEMarathon Electric LLC | Duluth | GA | — | ◐ LIKELY ACTIVE |
| MIMar-Mac Industries, Inc. | Mcbee | SC | 20–99 | ◐ LIKELY ACTIVE |
| MRMasonry Reinforcing Corp of America dba Wirebond | Charlotte | NC | 100–499 | ◐ LIKELY ACTIVE |
| MHMaterial Handling Division | Nashville | TN | 100–499 | ◐ LIKELY ACTIVE |
| MLMathes Lighting and Lamp, INC. | Pensacola | FL | — | ◐ LIKELY ACTIVE |
| MMMax Metrix, Lc | Scottsdale | AZ | — | ◐ LIKELY ACTIVE |
| MNMaze Nails | Peru | IL | 20–99 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Baltimore) | Baltimore | MD | 20–99 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Baton Rouge, LA) | Gonzales | LA | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Carter Rd, OH) | Cleveland | OH | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Charlotte, NC) | Charlotte | NC | 20–99 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Chattanooga, TN) | Chattanooga | TN | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Cincinnati, OH) | Cincinnati | OH | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Cleveland, OH) | Cleveland | OH | 100–499 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Dallas, TX) | Dallas | TX | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Denver) | Denver | CO | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Distribution Center) | Memphis | TN | 20–99 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Dolomite) | Dolomite | AL | 20–99 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (East Chicago, IN) | East Chicago | IN | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Granite City) | Granite City | IL | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Lafayette) | Lafayette | LA | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Longview) | Longview | TX | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Memphis) | Memphis | TN | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Oklahoma City) | Oklahoma City | OK | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Pittsburgh, PA) | Cranberry Twp | PA | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (San Antonio) | San Antonio | TX | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Vancouver) | Vancouver | WA | 1–19 | ◐ LIKELY ACTIVE |
| MLMazzella Lifting Technologies (Virginia Beach, VA) | Virginia Beach | VA | 20–99 | ◐ LIKELY ACTIVE |
| MMcEwen | Mcewen | TN | 20–99 | ◐ LIKELY ACTIVE |
| MPMcEwen Plant 2 | Mcewen | TN | 20–99 | ◐ LIKELY ACTIVE |