| Georgetown, TX | QUANTUM MERIT ENTERPRISES, INC. | 134 | 2 | 16 |
| Lombard, IL | QUEST FOOD MANAGEMENT | 423 | 2 | 333 |
| Brenham, TX | QUESTSPECIALTY CORPORATION | 180 | 12 | 148 |
| Tulsa, OK | QUIKTRIP CORPORATION | 9,828 | 5 | 1,392 |
| Quincy, IL | QUINCY RECYLCE PAPER INC | 290 | 3 | 527 |
| Chicago, IL | QUINNOX, INC. | 150 | 2 | 293 |
| Bensenville, IL | R & M FREIGHT, INC. | 420 | 3 | 420 |
| Buffalo, TX | R CONSTRUCTION COMPANYY | 199 | 3 | 269 |
| Tulsa, OK | R&D MAINTENANCE SERVICES, INC. | 220 | 2 | 275 |
| Lubbock, TX | R.E. JANES GRAVEL COMPANY | 150 | 2 | 13 |
| Fort Worth, TX | R.E. SWEENEY COMPANY, INC. | 161 | 4 | 130 |
| Chicago, IL | R.J. O'BRIEN & ASSOCIATES LLC | 298 | 9 | 699 |
| Springfield, IL | R.W. TROXELL & COMPANY | 99 | 3 | 104 |
| Hewitt, TX | RABROKER AIR CONDITIONING AND PLUMBING | 190 | 2 | 83 |
| Oak Brook, IL | RADIOLOGICAL SOCIETY OF NORTH AMERICA | 272 | 7 | 513 |
| Chicago, IL | RADIX TRADING, LLC | 122 | 3 | 221 |
| San Antonio, TX | RAICES | 336 | 4 | 420 |
| El Paso, TX | RAIZ FEDERAL CREDIT UNION | 239 | 4 | 322 |
| Bartlett, IL | RANA USA, INC. | 438 | 4 | 634 |
| Midland, TX | RANCH & OILFIELD CONSTRUCTION SERVICES | 154 | 2 | 220 |
| Bozeman, MT | RANCH AND HOME SUPPLY LLC | 657 | 5 | 1,065 |
| Austin, TX | RANGER EXCAVATING, L.P. | 325 | 2 | 484 |
| Carrollton, TX | RASA FLOORS AND CARPET CLEANING, LLC | 288 | 2 | 267 |
| Rolling Meadows, IL | RATIONAL COOKING SYSTEMS, INC. | 159 | 3 | 336 |
| Beaumont, TX | RAVE FINANCIAL CREDIT UNION | 268 | 3 | 366 |
| Lincolnwood, IL | RAVENSWOOD STUDIO, INC. | 113 | 2 | 160 |
| Antioch, IL | RAYMOND CHEVROLET | 151 | 2 | 283 |
| Dixon, IL | RAYNOR MANUFACTURING COMPANY | 184 | 4 | 350 |
| Plano, TX | RBS HOLDING, LLC | 519 | 3 | 444 |
| Oklahoma City, OK | RE-CON COMPANY, INC | 101 | 2 | 182 |
| Cypress, TX | REACH UNLIMITED | 49 | 2 | 75 |
| Fort Worth, TX | READY CABLE, INC. | 135 | 3 | 184 |
| Houston, TX | RECORDXTECHNOLOGIES, LLC | 510 | 3 | 548 |
| Chicago, IL | RECSOLU, INC. DBA YELLO | 75 | 2 | 149 |
| College Station, TX | RECURO HEALTH, INC. | 119 | 3 | 216 |
| Athens, TX | RED DOT CORPORATION | 247 | 9 | 328 |
| Texarkana, TX | RED RIVER EMPLOYEES FEDERAL CREDIT UNION | 358 | 4 | 412 |
| Cresson, TX | RED STAG. LLC | 172 | 5 | 134 |
| Chicago, IL | REDMANE TECHNOLOGY LLC | 291 | 3 | 537 |
| Chicago, IL | REDWOOD LOGISTICS, LLC | 751 | 8 | 1,081 |
| Houston, TX | REEF INDUSTRIES, INC | 55 | 3 | 55 |
| Dallas, TX | REES-JONES HOLDINGS, LLC | 137 | 3 | 545 |
| Corpus Christi, TX | REFINERY TERMINAL FIRE COMPANY | 130 | 5 | 278 |
| Springfield, IL | REFRESHMENT SERVICES, INC. | 324 | 3 | 521 |
| Chicago, IL | REFUGEEONE | 115 | 2 | 113 |
| Roscoe, IL | REGAL CUTTING TOOLS, INC. | 102 | 3 | 142 |
| Milwaukee, WI | REGAL REXNORD CORPORATION | 7,907 | 10 | 285 |
| Tulsa, OK | REGENT BANK | 213 | 2 | 311 |
| Austin, TX | REGENTS SCHOOL OF AUSTIN, INC. | 152 | 4 | 310 |
| Addison, TX | REGUS MANAGEMENT GROUP, LLC | 2,341 | 7 | 2,614 |
| Chicago, IL | REHABILITATION INSTITUTE OF CHICAGO | 2,249 | 4 | 462 |
| Houston, TX | RELEVANT INDUSTRIAL, LLC | 391 | 2 | 893 |
| Dallas, TX | RELIABLE PARTS, INC. | 282 | 6 | 295 |
| Austin, TX | RELIANCE ENERGY, INC. | 163 | 3 | 225 |
| Plano, TX | RELIANT AT HOME MIDCO LLC | 164 | 8 | 461 |
| Chicago, IL | RELISH LABS, LLC DBA HOME CHEF | 2,030 | 7 | 617 |
| Chicago, IL | REMEDY MEDICAL PROPERTIES, INC. | 284 | 8 | 531 |
| Lisle, IL | REMPREX, LLC | 333 | 3 | 765 |
| Fort Worth, TX | RENEGADE GROUP, LLC | 560 | 4 | 721 |
| Abilene, TX | RENTECH BOILER SYSTEMS, INC. | 205 | 6 | 309 |
| Oak Brook, IL | REPUBLIC BANK OF CHICAGO | 245 | 7 | 592 |
| Houston, TX | REPUBLIC STATE MORTGAGE COMPANY | 64 | 3 | 97 |
| Irving, TX | RESOLUTE INVESTMENT MANAGERS, INC. | 116 | 2 | 273 |
| Tinley Park, IL | REST HAVEN ILLIANA CHRISTIAN CONVALESCENT HOME | 274 | 8 | 417 |
| Houston, TX | RESULT ENTERPRISES, INC. | 136 | 2 | 218 |
| Southlake, TX | RETINA GROUP, INC. DBA RETINA CONSULTANTS OF AMERICA | 751 | 7 | 1,838 |
| Libertyville, IL | RETURNS 'R' US LLC | 129 | 5 | 184 |
| Carpentersville, IL | REVCOR COMPANIES INSURANCE GROUP | 329 | 4 | 329 |
| Chicago, IL | REVEAL DATA CORPORATION | 318 | 3 | 553 |
| Oklahoma City, OK | REVENUE MANAGEMENT SOLUTIONS, LLC | 220 | 3 | 257 |
| Chicago, IL | REVENUE WELL SYSTEMS | 154 | 6 | 230 |
| Chicago, IL | REVOLUTION MARKETING, LLC | 138 | 3 | 222 |
| Houston, TX | REW INVESTMENTS | 413 | 6 | 327 |
| Chicago, IL | REWARDS NETWORK, INC. | 385 | 10 | 632 |
| Port Lavaca, TX | REXCO, INC. | 136 | 2 | 137 |
| San Antonio, TX | REYNOLDS TRANSPORTATION, INC. | 208 | 2 | 141 |
| Chicago, IL | RF RENOVO MANAGEMENT COMPANY | 179 | 3 | 320 |
| Lincolnshire, IL | RFMBG LINCOLNSHIRE LLC | 180 | 2 | 180 |
| Mcallen, TX | RHODES MANAGEMENT SERVICES, LLC | 181 | 3 | 245 |
| Tulsa, OK | RICH & CARTMILL, INC. | 278 | 7 | 278 |
| Homer Glen, IL | RICHARDS BUILDING SUPPLY | 646 | 3 | 876 |
| Albuquerque, NM | RICHARDSON INVESTMENTS, INC. | 184 | 5 | 79 |
| Tulsa, OK | RIGGS,ABNEY,NEAL,TURPEN,ORBISON & LEWIS | 119 | 9 | 128 |
| Evanston, IL | RIGHT AT SCHOOL, LLC | 1,066 | 8 | 319 |
| Chicago, IL | RILEY SAFER HOLMES & CANCILA LLP | 166 | 5 | 229 |
| The Woodlands, TX | RING ENERGY, INC. | 117 | 2 | 354 |
| Santa Rosa, TX | RIO GRANDE VALLEY SUGAR GROWERS INC | 37 | 3 | 37 |
| Palmview, TX | RIO VALLEY PIPE | 383 | 6 | 146 |
| Houston, TX | RIVAL DOWNHOLE TOOLS | 87 | 4 | 197 |
| Itasca, IL | RIVERSIDE ASSESSMENTS, LLC | 343 | 8 | 510 |
| Grandbury, TX | RIX MANAGEMENT LLC | 0 | 2 | 1 |
| Downers Grove, IL | RJN GROUP, INC. | 180 | 2 | 303 |
| Woodridge, IL | RJW LOGISTICS GROUP INC. | 1,608 | 3 | 1,288 |
| Houston, TX | RKI, INC. | 105 | 4 | 113 |
| Chicago, IL | RKON LLC | 126 | 3 | 191 |
| Chicago, IL | RL CANNING INC. | 112 | 3 | 167 |
| Chicago, IL | RLDATIX | 714 | 6 | 1,296 |
| Hinsdale, IL | RML HEALTH PROVIDERS, L.P. | 580 | 7 | 833 |
| Mt Pleasant, TX | ROADCLIPPER ENTERPRISES, INC. | 586 | 5 | 584 |
| Downers Grove, IL | ROADRUNNER TRANSPORTATION SERVICES, INC. | 1,031 | 13 | 1,037 |
| Lubbock, TX | ROBERT MADDEN INDUSTRIES LTD | 244 | 2 | 365 |
| Chicago, IL | ROBERT R MCCORMICK FOUNDATION | 107 | 2 | 216 |
| Itasca, IL | ROBERTSHAW CONTROLS COMPANY | 146 | 4 | 252 |
| Marietta, OK | ROBERTSONS HAMS, INC. | 67 | 1 | 67 |
| Frankfort, IL | ROBINSON ENGINEERING, LTD. | 127 | 4 | 246 |
| Rochelle, IL | ROCHELLE COMMUNITY HOSPITAL ASSOCIATION | 244 | 5 | 395 |
| Coppell, TX | ROCHESTER SENSORS, LLC | 182 | 2 | 241 |
| Richardson, TX | ROCK CUTTERS LLC | 105 | 1 | 105 |
| Chicago, IL | ROCKETMILES DBA ROCKET TRAVEL INC | 71 | 8 | 176 |
| Rockford, IL | ROCKFORD UNIVERSITY | 124 | 5 | 197 |
| Rockford, IL | ROCKNEL FASTENER, INC. | 109 | 4 | 157 |
| Albuquerque, NM | RODEY DICKASON SLOAN AKIN & ROBB PA | 113 | 8 | 152 |
| Oak Brook, IL | RODGERS & HOUDER INC. | 313 | 4 | 161 |
| Dallas, TX | ROGERS O'BRIEN CONSTRUCTION, LTD | 559 | 3 | 1,177 |
| Springfield, IL | ROLAND MACHINERY COMPANY | 192 | 2 | 410 |
| Chicago, IL | ROMAINE EMPIRE, INC DBA FARMER'S FRIDGE | 419 | 3 | 279 |
| Carrollton, TX | ROMCO, INC. | 380 | 3 | 728 |
| Chicago, IL | ROOSEVELT UNIVERSITY | 477 | 9 | 612 |
| North Chicago, IL | ROSALIND FRANKLIN UNIVERSITY OF MEDICINE AND SCIENCE | 870 | 4 | 635 |
| Bridgeview, IL | ROSE PAVING, LLC | 688 | 4 | 636 |
| Rockford, IL | ROSECRANCE HEALTH NETWORK | 783 | 6 | 1,931 |
| Evanston, IL | ROTARY INTERNATIONAL | 512 | 9 | 1,087 |
| Irving, TX | ROX CENTRAL SERVICES DBA RODEO DENTAL | 335 | 10 | 459 |
| Pharr, TX | ROYAL FREIGHT, LP | 179 | 3 | 21 |
| Austin, TX | RPM LIVING, LLC | 4,399 | 4 | 4,265 |
| The Woodlands, TX | RR HEAVY HAUL, LLC | 293 | 3 | 396 |
| Addison, TX | RR INVESTMENTS, INC. | 121 | 6 | 195 |
| Schaumburg, IL | RTM ENGINEERING CONSULTANTS LLC | 473 | 2 | 676 |
| St. Charles, IL | RUKEL MANAGEMENT | 1,059 | 3 | 515 |
| Chicago, IL | RUSH STREET INTERACTIVE LP | 0 | 3 | 442 |
| Channelview, TX | RUSSELL MARINE, LLC | 305 | 3 | 574 |
| Schiller Park, IL | RUSSO HARDWARE, INC. | 208 | 3 | 234 |
| Arlington Heights, IL | RVR MANAGEMENT COMPANY | 1,702 | 5 | 1,036 |
| Levelland, TX | RWLS, LLC | 393 | 35 | 1,642 |
| Wakefield, MA | RWS HOLDINGS PLC | 591 | 8 | 1,174 |
| Houston, TX | S & B ENGINEERS AND CONSTRUCTORS, LTD. | 4,021 | 4 | 5,860 |
| Polson, MT | S & K GAMING, LLC | 131 | 8 | 141 |
| Tulsa, OK | S & R COMPRESSION, LLC | 151 | 2 | 300 |
| St Ignatius, MT | S&K TECHNOLOGIES, INC | 500 | 9 | 827 |
| Bolingbrook, IL | S&S ACTIVEWEAR, LLC | 1,769 | 5 | 1,528 |
| Andrews, TX | S&S FISHING & RENTAL INC | 161 | 2 | 161 |
| Houston, TX | S&S INDUSTRIES, INC. | 152 | 6 | 237 |
| Schaumburg, IL | S&S TRUCK PARTS LLC | 295 | 7 | 311 |
| Weslaco, TX | S.E.S.A. FLEET SERVICES, LLC | 226 | 2 | 157 |
| Dallas, TX | S2C PARTNERS, LLC | 647 | 6 | 777 |
| Mckinney, TX | SABER FINANCIAL SERVICES, LP | 162 | 3 | 162 |
| Alvarado, TX | SABRE INDUSTRIES, INC. | 2,706 | 4 | 2,801 |
| Buffalo Grove, IL | SAFCO DENTAL SUPPLY LLC | 85 | 6 | 149 |
| Austin, TX | SAFEGUARD WORLD INTERNATIONAL, LLC | 89 | 2 | 247 |
| Chicago, IL | SAFER FOUNDATION | 254 | 4 | 242 |
| Grand Prairie, TX | SAGE INTERNATIONAL, INC. DBA JAYCO MANUFACTURING | 110 | 3 | 76 |
| Franklin Park, IL | SAI ADVANCED POWER SOLUTIONS, INC. | 305 | 2 | 452 |
| Houston, TX | SAINT ARNOLD BREWING COMPANY | 127 | 2 | 150 |
| Moline, IL | SAL FAMILY AND COMMUNITY SERVICES DBA SKIP-A-LONG CHILD DEVELOPMENT CE | 211 | 3 | 160 |
| Carlsbad, NM | SALADO ISOLATION MINING CONTRACTORS, LLC | 1,112 | 7 | 2,289 |
| Plano, TX | SALAS PLUMBING INC. | 146 | 3 | 96 |
| Baytown, TX | SAMSON CONTROLS, INC. | 143 | 9 | 179 |
| San Antonio, TX | SAN ANTONIO METROPOLITAN MINISTRY, INC. | 142 | 2 | 138 |
| San Antonio, TX | SAN ANTONIO ZOO | 208 | 4 | 323 |
| San Felipe Pueblo, NM | SAN FELIPE PUEBLO ENTERPRISES | 378 | 10 | 458 |
| San Jose, CA | SAN JOSE WATER COMPANY | 433 | 5 | 198 |
| Midland, TX | SAND REVOLUTION II | 332 | 3 | 414 |
| Albuquerque, NM | SANDIA AREA FEDERAL CREDIT UNION | 196 | 4 | 197 |
| Oklahoma City, OK | SANDRIDGE ENERGY, INC. | 102 | 3 | 293 |
| Dallas, TX | SANTA CRUZ BIOTECHNOLOGY, INC. | 212 | 3 | 161 |
| San Antonio, TX | SANTIKOS ENTERPRISES, LLC | 379 | 3 | 371 |
| Cicero, IL | SAPORITO FINISHING COMPANY | 121 | 2 | 121 |
| Conroe, TX | SAPPHIRE GAS SOLUTIONS | 126 | 2 | 320 |
| Chicago, IL | SARGENT & LUNDY, L.L.C. | 3,415 | 7 | 5,943 |
| Dallas, TX | SAVOY REAL ESTATE SERVICES LLC EMPLOYEE WELFARE BENEFIT PLAN | 95 | 7 | 154 |
| Vernon Hills, IL | SAYERS TECHNOLOGY, LLC | 175 | 2 | 343 |
| Beaumont, TX | SCALLON CONTROLS, INC. | 192 | 2 | 458 |
| Houston, TX | SCANDRILL, INC. | 259 | 3 | 883 |
| Schaumburg, IL | SCHAUMBURG TOYOTA, INC. | 290 | 8 | 307 |
| Hockley, TX | SCHULTE BUILDING SYSTEMS, INC. | 676 | 8 | 1,103 |
| Houston, TX | SCM OPERATIONS, LLC | 146 | 3 | 317 |
| Elk Grove Village, IL | SCREEN NORTH AMERICA HOLDINGS, INC. | 444 | 8 | 836 |
| Beaumont, TX | SCRIPT CARE, LTD. | 166 | 5 | 325 |
| Houston, TX | SEAH STEEL USA LLC | 329 | 2 | 657 |
| Chicago, IL | SEARCH, INC. | 223 | 8 | 209 |
| San Antonio, TX | SECURITY SERVICE FEDERAL CREDIT UNION | 1,982 | 5 | 3,090 |
| Lincolnshire, IL | SEDGEBROOK OPCO (SL-VII), LLC | 282 | 7 | 330 |
| Washington, DC | SEIU HEALTH AND WELFARE FUND WELFARE FUND | 5,110 | 6 | 819 |
| Chicago, IL | SEIU HEALTHCARE IL & IN | 178 | 5 | 411 |
| Schaumburg, IL | SEKO WORLDWIDE, LLC | 545 | 6 | 637 |
| Dallas, TX | SELECT MILK PRODUCERS, INC. | 906 | 2 | 1,474 |
| Fort Worth, TX | SELECT PLASTICS LLC | 129 | 2 | 257 |
| Mckinney, TX | SELERIX SYSTEMS, INC. | 117 | 3 | 237 |
| Austin, TX | SELF FINANCIAL, INC. | 281 | 4 | 607 |
| Chicago, IL | SELFRELIANCE FEDERAL CREDIT UNION | 142 | 2 | 258 |
| San Diego, CA | SEMPRA TEXAS HOLDINGS CORP. | 1 | 2 | 335 |
| Rockford, IL | SEMS AND SPECIALS, INC. | 100 | 2 | 198 |
| Grove, OK | SENECA CAYUGA NATION | 228 | 4 | 231 |
| Chicago, IL | SENIOR LIFESTYLE DC, LLC | 3,833 | 12 | 2,714 |
| Austin, TX | SENOX CORPORATION | 169 | 2 | 262 |
| Houston, TX | SENTINEL INTEGRITY SOLUTIONS, INC. | 398 | 2 | 696 |
| Pasadena, TX | SER CONSTRUCTION PARTNERS, LLC | 227 | 3 | 216 |
| Alsip, IL | SERTOMA STAR SERVICES, INC. | 476 | 2 | 320 |
| Oswego, IL | SERVBANK, SB | 547 | 10 | 96 |
| Elk Grove Village, IL | SERVERCENTRAL LLC | 0 | 3 | 179 |
| Joliet, IL | SERVICE, INC. OF ILLINOIS | 209 | 4 | 368 |
| Laredo, TX | SERVING CHILDREN AND ADULTS IN NEED, INC. | 219 | 3 | 237 |
| Downers Grove, IL | SEVAN MULTI-SITE SOLUTIONS, INC. | 343 | 6 | 653 |
| Dallas, TX | SEWELL VILLAGE CADILLAC COMPANY, INC. | 3,231 | 5 | 4,786 |
| Sycamore, IL | SEYMOUR OF SYCAMORE, INC. | 110 | 6 | 179 |
| Houston, TX | SG BUSINESS SERVICES, LTD | 226 | 2 | 376 |
| Albany, TX | SHACKELFORD COUNTY COMMUNITY RESOURCE CENTER DBA RESOURCECARE | 110 | 9 | 142 |
| Dallas, TX | SHACKELFORD, BOWEN, MCKINLEY & NORTON, LLP | 120 | 5 | 463 |
| Oak Park, IL | SHAKER ADVERTISING AGENCY | 199 | 6 | 225 |
| Gainesville, TX | SHARP OILFIELD SERVICES, LLC | 87 | 3 | 206 |
| Philadelphia, PA | SHEET METAL WORKERS HEALTH FUND OF LOCAL UNION NO19 | 2,046 | 6 | 1,549 |
| Muskogee, OK | SHELTERED WORK ACTIVITY PROGRAM | 103 | 3 | 54 |
| Bensenville, IL | SHERIDAN HEALTHCARE | 337 | 5 | 138 |
| Houston, TX | SHERIDAN PRODUCTION OPERATING COMPANY, LLC | 99 | 4 | 291 |
| Elk Grove Village, IL | SHIBAURA MACHINE COMPANY, AMERICA | 113 | 3 | 269 |
| Houston, TX | SHINTECH INCORPORATED | 1,068 | 7 | 3,175 |
| Chicago, IL | SHIPBOB, INC. | 835 | 6 | 1,009 |
| El Campo, TX | SHOPPA'S FARM SUPPLY | 253 | 2 | 381 |
| Fort Worth, TX | SHOPPA'S MATERIAL HANDLING | 653 | 6 | 1,024 |
| Chicago, IL | SHORE CAPITAL PARTNERS, LLC | 201 | 2 | 459 |
| Kankakee, IL | SHOUP MANUFACTURING CO | 136 | 2 | 209 |
| Goodlettsville, TN | SHREVEPORT ELECTRICAL HEALTH & WELFARE FUND | 491 | 4 | 557 |
| Chicago, IL | SIDLEY AUSTIN LLP | 3,538 | 24 | 218 |
| Houston, TX | SIGNATURE STAFFING, LLC | 247 | 2 | 524 |
| Naperville, IL | SIKICH LLP | 1,539 | 12 | 2,334 |
| Hodgkins, IL | SILBRICO CORPORATION | 98 | 4 | 201 |
| Chicago, IL | SILKROAD TECHNOLOGY, INC. | 85 | 7 | 159 |
| Chicago, IL | SILVER BIRCH SERVICES LLC | 594 | 2 | 342 |
| New Lenox, IL | SILVER CROSS HEALTH SYSTEM, INC | 2,013 | 7 | 1,051 |
| New Lenox, IL | SILVER CROSS MANAGEMENT SERVICES ORGANIZATION | 162 | 6 | 245 |
| Moore, OK | SILVER STAR CONSTRUCTION COMPANY | 291 | 4 | 279 |
| San Antonio, TX | SILVER VENTURES, INC. | 553 | 2 | 640 |
| Peoria, IL | SIMANTEL GROUP, LTD. | 0 | 2 | 200 |
| Lubbock, TX | SIMFLO, INC. | 0 | 2 | 268 |
| Owasso, OK | SIMMONS HOMES RESIDENTIAL GROUP, LLC | 133 | 5 | 151 |
| Fort Worth, TX | SIMPLI.FI HOLDINGS, LLC | 627 | 3 | 1,064 |
| Chicago, IL | SINAI HEALTH SYSTEM | 1,985 | 5 | 1,995 |
| Dallas, TX | SINGER EQUITIES | 765 | 3 | 1,503 |
| Dixon, IL | SINNISSIPPI CENTERS, INC. | 264 | 2 | 304 |
| Houston, TX | SITUSAMC HOLDING CORP. | 1,781 | 14 | 3,214 |
| Bulverde, TX | SJRC TEXAS INC | 370 | 5 | 370 |
| Chicago, IL | SKENDER CONSTRUCTION, LLC | 202 | 3 | 459 |
| Burr Ridge, IL | SKINCURE ONCOLOGY, LLC | 521 | 3 | 831 |
| Great Falls, MT | SLETTEN INC. | 450 | 2 | 487 |
| Rockford, IL | SLIDEMATIC PRECISION COMPONENTS, INC. | 257 | 3 | 449 |
| Omaha, NE | SLOSBURG COMPANY | 302 | 2 | 302 |
| Lake Zurich, IL | SMALLEY STEEL RING COMPANY | 591 | 9 | 872 |
| Amarillo, TX | SMART CHEMICAL SOLUTIONS | 131 | 2 | 283 |
| Chicago, IL | SMITH SENIOR LIVING | 290 | 4 | 296 |
| Chicago, IL | SMITHBUCKLIN CORPORATION | 631 | 6 | 880 |
| Washington, DC | SMITHS GROUP SERVICES CORPORATION | 1,435 | 6 | 39 |
| Chicago, IL | SMOKEBALL INC. | 103 | 6 | 166 |
| Portage, IN | SMS HOLDCO, LLC. | 262 | 4 | 345 |
| Grapevine, TX | SMS INFOCOMM CORPORATION | 1,127 | 3 | 1,261 |
| Austin, TX | SMW HEALTH NETWORK, LLC | 306 | 2 | 444 |
| San Antonio, TX | SOARION FEDERAL CREDIT UNION | 126 | 2 | 146 |
| Chicago, IL | SOCIETY OF ACTUARIES RESEARCH INSTITUTE | 150 | 5 | 251 |
| Richardson, TX | SOCIETY OF PETROLEUM ENGINEERS | 122 | 2 | 216 |
| Peoria, IL | SODERSTROM DERMATOLOGY CENTER, S.C. | 215 | 4 | 224 |
| Chicago, IL | SOFTCHOICE CORPORATION | 519 | 6 | 988 |
| Decatur, TX | SOLARIS HEALTHCARE, INC. | 409 | 3 | 565 |
| Austin, TX | SOLARWINDS WORLDWIDE LLC | 711 | 6 | 1,589 |
| Oklahoma City, OK | SOLIS MANAGEMENT COMPANY, INC. | 138 | 5 | 142 |
| Grapevine, TX | SOLO BRANDS LLC | 494 | 4 | 494 |
| Chicago, IL | SOLOMON, CORDWELL, BUENZ & ASSOCIATES, INC. | 232 | 4 | 320 |
| Irving, TX | SOURCEHOV, LLC | 3,956 | 19 | 494 |
| Dallas, TX | SOUTH OXFORD MANAGEMENT LLC | 491 | 7 | 517 |
| Levelland, TX | SOUTH PLAINS COMMUNITY ACTION ASSOCIATION, INC. | 420 | 3 | 420 |
| Lubbock, TX | SOUTH PLAINS ELECTRIC COOP, INC. | 373 | 2 | 401 |
| Chicago, IL | SOUTH SHORE HOSPITAL | 179 | 2 | 156 |
| Bridge City, TX | SOUTHEAST TEXAS INDUSTRIES, INC. | 1,102 | 5 | 838 |
| Humble, TX | SOUTHEAST TEXAS MEDICAL VENTURES, LLC | 252 | 3 | 306 |
| Graham, TX | SOUTHERN BLEACHER COMPANY,INC. | 245 | 17 | 386 |
| Dallas, TX | SOUTHERN BOTANICAL, INC. | 221 | 3 | 250 |
| Atlanta, GA | SOUTHERN COMPANY SERVICES, INC | 28,147 | 27 | 1,183 |
| Grapevine, TX | SOUTHERN INNOVATIONS, LLC | 248 | 5 | 300 |
| Dallas, TX | SOUTHERN MAIL SERVICE | 552 | 2 | 552 |
| Grapevine, TX | SOUTHLAND HOLDINGS, LLC | 1,760 | 3 | 1,699 |
| Earth City, MO | SOUTHWEST ILLINOIS BRICKLAYERS HEALTH & WELFARE FUND | 0 | 4 | 231 |
| Dallas, TX | SOUTHWEST INTERNATIONAL TRUCKS, INC | 270 | 5 | 559 |
| Albuquerque, NM | SOUTHWEST MULTICRAFT | 3,779 | 2 | 6,773 |
| Carrollton, TX | SOUTHWEST NURSERY & SUPPLY, LLC | 96 | 4 | 151 |
| Channelview, TX | SOUTHWEST SHIPYARD, L.P. | 244 | 2 | 472 |
| Dallas, TX | SOUTHWEST TRANSPLANT ALLIANCE | 788 | 2 | 788 |
| Highland Park, IL | SOVEREIGN BRANDS, L.L.C. | 128 | 2 | 207 |
| Chicago, IL | SP PLUS CORPORATION | 12,489 | 16 | 5,719 |
| Chicago, IL | SPARTAN EDUCATION GROUP, LLC | 296 | 4 | 254 |
| Chicago, IL | SPAULDING RIDGE LLC | 408 | 3 | 442 |
| North Aurora, IL | SPECIAL EDUCATION SERVICES | 981 | 6 | 1,296 |
| Longview, TX | SPECIAL HEALTH RESOURCES FOR TEXAS, INC | 224 | 2 | 330 |
| Houston, TX | SPECIALIST STAFFING SERVICES, INC. | 511 | 5 | 1,201 |
| Hammond, IN | SPECIALTY STEEL WORKS INCORPORATED | 628 | 10 | 245 |
| Houston, TX | SPECTRA ENERGY CORP | 0 | 1 | 66 |
| Tulsa, OK | SPECTRUM PAINT COMPANY, INC. | 694 | 11 | 644 |
| Chicago, IL | SPENCER STUART STAR US, INC. | 14 | 5 | 98 |
| San Antonio, TX | SPFM, LP | 146 | 2 | 313 |
| Chicago, IL | SPINS LLC | 452 | 2 | 702 |
| Chicago, IL | SPOTHERO, INC. | 205 | 3 | 346 |
| Oakbrook Terrace, IL | SPOTLESS BRANDS LLC | 1,865 | 5 | 675 |
| Chicago, IL | SPRI PARTNERS LLC | 111 | 3 | 264 |