| ONOntario Neon CO INC | Ontario | CA | — | ◇ UNVERIFIED |
 On The Edge MFG, Inc | Kittanning | PA | — | ◇ UNVERIFIED |
| OTOn the Level Fabrication, LLC | Winder | GA | — | ◇ UNVERIFIED |
| OTOn Time Signs | Fort Worth | TX | — | ◇ UNVERIFIED |
| OTOn Time Signs CORP. | Corona | NY | — | ◇ UNVERIFIED |
| OWOn Wings, INC. | Englewood | CO | — | ◇ UNVERIFIED |
| OTOp Tanks LLC | Pleasant View | UT | — | ◇ UNVERIFIED |
| OBOrange Box Productions Dba Fastsigns of Torrance | Torrance | CA | — | ◇ UNVERIFIED |
| OCOrange CO Name Plate CO INC | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| OSOrange Steel Roofing Products | Orange | VA | — | ◇ UNVERIFIED |
| OSOrde Sign and Graphics, INC | De Pere | WI | — | ◇ UNVERIFIED |
| OCOregon City Signs INC | Oregon City | OR | — | ◇ UNVERIFIED |
| OPOregon Precision Manufacturing INC | Sherwood | OR | — | ◇ UNVERIFIED |
| OSOreland Sheet Metal Inc | Huntingdon Valley | PA | — | ◇ UNVERIFIED |
| OIOrientations INC Dba Designer Sign Systems | Minneapolis | MN | — | ◇ UNVERIFIED |
| OEOri Enterprises LLC | Wellington | UT | — | ◇ UNVERIFIED |
| OAOrion Asset Management Co., LLC | Akron | OH | — | ◇ UNVERIFIED |
| OCOsage Canoes LLC | Lebanon | MO | — | ◇ UNVERIFIED |
| OIOseda Industries Corporation | Corona | CA | — | ◇ UNVERIFIED |
| OLOTS Legacy Signs Inc | Fort Worth | TX | — | ◇ UNVERIFIED |
| ONOur Next Energy | Torrance | CA | — | ◇ UNVERIFIED |
| OGOutform Group | Union City | CA | — | ◇ UNVERIFIED |
| OMOutfront Media INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| OMOutfront Media LLC | Stuart | FL | — | ◇ UNVERIFIED |
| OIOvierre Industries LLC | Salida | CO | — | ◇ UNVERIFIED |
| OSOwens Specialty Company, INC. | Channelview | TX | — | ◇ UNVERIFIED |
| OGOxford General Industries INC | Prospect | CT | — | ◇ UNVERIFIED |
| PMP3 Manufacturing LLC | Cleveland | OH | — | ◇ UNVERIFIED |
| PSPacfab Services LLC | Davenport | IA | — | ◇ UNVERIFIED |
| PCPacific Crest Canvas | Alameda | CA | — | ◇ UNVERIFIED |
| PDPacific Duct INC | Montclair | CA | — | ◇ UNVERIFIED |
| PFPacific Fiberglass INC | Salem | OR | — | ◇ UNVERIFIED |
| PMPacific Metal Fab, INC | Madera | CA | — | ◇ UNVERIFIED |
| PMPacific Metal Fab LLC | Eugene | OR | — | ◇ UNVERIFIED |
| PMPacific Metal Fabricators | Stockton | CA | — | ◇ UNVERIFIED |
| PPPacific Powder Coating & Manufacturing | Sacramento | CA | — | ◇ UNVERIFIED |
| PSPacific Safe Manufacturing, Inc. | Upland | CA | — | ◇ UNVERIFIED |
| PSPacific Sign Center Corp. | Dana Point | CA | — | ◇ UNVERIFIED |
| PIPageantry Innovations LLC | Dover | OH | — | ◇ UNVERIFIED |
| PGPajor Graphics INC Dba Asi Signage Innovations | Minneapolis | MN | — | ◇ UNVERIFIED |
| PSPalatka Sheet Metal, INC. | Palatka | FL | — | ◇ UNVERIFIED |
| PIPalco Inc | West Greenwich | RI | — | ◇ UNVERIFIED |
| PMPalermo Metal Products, INC. | Easton | PA | — | ◇ UNVERIFIED |
| PMPalex Metals INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| PMPalladino Metal Fabrication, INC. | Pottstown | PA | — | ◇ UNVERIFIED |
| PCPall Corporation | Grand Island | NE | — | ◇ UNVERIFIED |
| PTPalmer Tool Company | Camden | TN | — | ◇ UNVERIFIED |
| PDPamela Deats dba Custom Built Awards | Humble | TX | — | ◇ UNVERIFIED |
| PFPanel Finishers, INC. | Houston | TX | — | ◇ UNVERIFIED |
| PMPan Man, LLC | Lake Worth Beach | FL | — | ◇ UNVERIFIED |
