| SFStone Forest Industries Orangeburg | Orangeburg | SC | — | ◇ UNVERIFIED |
| SLStoneville Lumber Company, INC | Stoneville | NC | — | ◇ UNVERIFIED |
| SLStorm Lumber Acquisition Company | Licking | MO | — | ◇ UNVERIFIED |
| SLStorm Lumber & Pallet CO. | Licking | MO | — | ◇ UNVERIFIED |
| SPStor-Mor Portable Buildings of Douglas | Douglas | GA | — | ◇ UNVERIFIED |
| SPStor-Mor Portable Buildings of Georgia, LLC | Douglas | GA | — | ◇ UNVERIFIED |
| STStorm Trees LLC | Minneapolis | MN | — | ◇ UNVERIFIED |
| SEStraight Edge Stevedore Services, INC | Healdsburg | CA | — | ◇ UNVERIFIED |
| SFStrata Forest Products INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| SUStratford Upholstery Company Llc, the | Eupora | MS | — | ◇ UNVERIFIED |
| SLStrickland Lumber Co, INC. | Eufaula | AL | — | ◇ UNVERIFIED |
| SCStructural Components INC | Yakima | WA | — | ◇ UNVERIFIED |
| SMStructural Modulars, INC. | Strattanville | PA | — | ◇ UNVERIFIED |
| SWStuart Wilderness INC | Stuart | VA | — | ◇ UNVERIFIED |
| SBSturdy Built Portables | Garland | UT | — | ◇ UNVERIFIED |
| SFSuffolk Forest Products INC | Suffolk | VA | — | ◇ UNVERIFIED |
| SDSuite Durango LLC | Durango | CO | — | ◇ UNVERIFIED |
| SCSummit Crest Homes | Berthoud | CO | — | ◇ UNVERIFIED |
| SFSummit Forest Resources INC. | Markleysburg | PA | — | ◇ UNVERIFIED |
| SSSuncrest Sheds INC | Labelle | FL | — | ◇ UNVERIFIED |
| SLSundance Lumber CO INC | Springfield | OR | — | ◇ UNVERIFIED |
| SLSunnyside Lumber & Barns Professional Limited Liability Company | Madisonville | TN | — | ◇ UNVERIFIED |
| SLSunrise Lumber LLC | Mio | MI | — | ◇ UNVERIFIED |
| SBSunset Buildings, LLC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SHSunset Hardwoods LLC | Centerville | IN | — | ◇ UNVERIFIED |
| SFSuperior Forest Products INC | Dorena | OR | — | ◇ UNVERIFIED |
| SHSuperior Hardwoods LLC | Leroy | MI | — | ◇ UNVERIFIED |
| SHSuperior Hardwoods of Ohio, INC. | Mc Arthur | OH | — | ◇ UNVERIFIED |
| SLSuperior Lumber INC | Tyrone | PA | — | ◇ UNVERIFIED |
| SSSuperior Shavings, LLC | Comer | GA | — | ◇ UNVERIFIED |
| SSSuperior Sheds Inc | Rock Island | IL | — | ◇ UNVERIFIED |
| SWSuperior Wood Components, INC. | Troy | AL | — | ◇ UNVERIFIED |
| SLSure-Cut LLC | East Jordan | MI | — | ◇ UNVERIFIED |
| SBSutton Brothers Lumber | Tennga | GA | — | ◇ UNVERIFIED |
| SLSuwanee Lumber Company One, INC. | Cross City | FL | — | ◇ UNVERIFIED |
| SBSwanson Big Timber INC. | Vinton | IA | — | ◇ UNVERIFIED |
| SBSwanson Bros. Lumber CO. | Noti | OR | — | ◇ UNVERIFIED |
 Swanson Group Mfg LLC | Glendale | OR | — | ◇ UNVERIFIED |
| Swanson Group Mfg LLC | Springfield | OR | — | ◇ UNVERIFIED |
| SSSwartzentruber Sawmill Company | Hartly | DE | — | ◇ UNVERIFIED |
| TRTable Rock Lumber CO & Mfg | Table Rock | NE | — | ◇ UNVERIFIED |
| TETak Enterprises, INC. | Kermit | WV | — | ◇ UNVERIFIED |
| TLTAK Lumber LLC | Punxsutawney | PA | — | ◇ UNVERIFIED |
| TTTalbert & Talbert Lumber Company INC | Roxboro | NC | — | ◇ UNVERIFIED |
| TTali-pak | Hopland | CA | — | ◇ UNVERIFIED |
| TLTallahatchie Lumber LLC | Charleston | MS | — | ◇ UNVERIFIED |
| TSTallent Sawmill | Rainbow City | AL | — | ◇ UNVERIFIED |
| TLTallon Lumber, INC. | Canaan | CT | — | ◇ UNVERIFIED |
| TITalon, Incorporated | Leesburg | VA | — | ◇ UNVERIFIED |
| TLTamarack Log & Timber Homes INC. | Jane Lew | WV | — | ◇ UNVERIFIED |
