| $350,000–1 million | COLON & RECTAL SURGERY INC | OMAHA, NE | First Interstate Bank |
| $350,000–1 million | COLONIAL HOUSE INC | Rapid City, SD | First Interstate Bank |
| $350,000–1 million | COLONIAL HOUSE INC | RAPID CITY, SD | First Interstate Bank |
| $150,000–350,000 | COLORADO CIVIL GROUP | LOVELAND, CO | First Interstate Bank |
| $150,000–350,000 | COLORADO COMMERCIAL INTERIORS INC | DENVER, CO | First Interstate Bank |
| $150,000–350,000 | COLORADO HEALTH & REHAB LLC | KALISPELL, MT | First Interstate Bank |
| $150,000–350,000 | COLORADO MUSIC FESTIVAL | LAFAYETTE, CO | First Interstate Bank |
| $150,000–350,000 | COLORADO MUSIC FESTIVAL & CENTER FOR MUSICAL ARTS | Lafayette, CO | First Interstate Bank |
| $150,000–350,000 | COLORADO NATIONAL GOLF CLUB HQ, LLC | ERIE, CO | First Interstate Bank |
| $1–2 million | COLSTRIP ELECTRIC INC | Colstrip, MT | First Interstate Bank |
| $1–2 million | COLSTRIP ELECTRIC INC | COLSTRIP, MT | First Interstate Bank |
| $150,000–350,000 | COLSTRIP MEDICAL CENTER | COLSTRIP, MT | First Interstate Bank |
| $1–2 million | COLUMBIA ROOM INC | Hood River, OR | First Interstate Bank |
| $1–2 million | COLUMBIA ROOM INC | HOOD RIVER, OR | First Interstate Bank |
| $150,000–350,000 | COMBS CAR CORRAL INC | NAMPA, ID | First Interstate Bank |
| $150,000–350,000 | COMFORT HEATING & AIR CONDITIO | BILLINGS, MT | First Interstate Bank |
| $150,000–350,000 | COMIDA AT THE STANLEY MARKETPLACE LLC | Aurora, CO | First Interstate Bank |
| $150,000–350,000 | COMIDA AT THE STANLEY MARKETPLACE LLC | AURORA, CO | First Interstate Bank |
| $150,000–350,000 | COMMERCIAL POWDER | BEND, OR | First Interstate Bank |
| $150,000–350,000 | COMMERCIAL POWDER COATING | Bend, OR | First Interstate Bank |
| $350,000–1 million | COMMONFONT LLC | BOZEMAN, MT | First Interstate Bank |
| $350,000–1 million | COMMUNITY CONNECTIONS INCORPORATED | BOISE, ID | First Interstate Bank |
| $350,000–1 million | COMMUNITY ACTION OF LARAMIE COUNTY, INC | CHEYENNE, WY | First Interstate Bank |
| $350,000–1 million | COMMUNITY AND FAMILY RESOURCES | Fort Dodge, IA | First Interstate Bank |
| $350,000–1 million | COMMUNITY AND FAMILY RESOURCES | FORT DODGE, IA | First Interstate Bank |
| $150,000–350,000 | COMMUNITY CENTER FOR THE ARTS | Jackson, WY | First Interstate Bank |
| $150,000–350,000 | COMMUNITY CENTER FOR THE ARTS | JACKSON, WY | First Interstate Bank |
| $150,000–350,000 | COMMUNITY CLINICS AT MEMORIAL REGIONAL HEALTH | CRAIG, CO | First Interstate Bank |
| $1–2 million | COMMUNITY ENTRY SERVICES | RIVERTON, WY | First Interstate Bank |
| $1–2 million | COMMUNITY FOOD CO-OP INC | BOZEMAN, MT | First Interstate Bank |
| $2–5 million | COMMUNITY HEALTH CENTERS OF SOUTHEASTERN IOWA, INC. | BURLINGTON, IA | First Interstate Bank |
| $1–2 million | COMMUNITY HOSPITAL, INC | HAMBURG, IA | First Interstate Bank |
| $150,000–350,000 | COMMUNITY LLC | Lafayette, CO | First Interstate Bank |
| $150,000–350,000 | COMMUNITY LLC | LAFAYETTE, CO | First Interstate Bank |
| $350,000–1 million | COMMUNITY OPTION RESOURCES ENTERPRISES INC. | BILLINGS, MT | First Interstate Bank |
| $350,000–1 million | COMMUNITY TITLE, LLC | STILWELL, KS | First Interstate Bank |
| $150,000–350,000 | COMPASS COMM RE SVCS | BEND, OR | First Interstate Bank |
| $350,000–1 million | COMPASS CONSTRUCTION INC | SPOKANE, WA | First Interstate Bank |
| $350,000–1 million | COMPREHENSIVE PAIN SOLUTIONS LLC | Medford, OR | First Interstate Bank |
| $1–2 million | CONCEPTIONS REPRODUCTIVE ASSOCIATES OF COLORADO | LITTLETON, CO | First Interstate Bank |
| $1–2 million | CONCRETE TECHNOLOGIES, INC | GRIMES, IA | First Interstate Bank |
| $150,000–350,000 | CONFIDENT CONSTRUCTION WORKFORCE | MEDFORD, OR | First Interstate Bank |
| $150,000–350,000 | CONFIDENT CONSTRUCTION WORKFORCE | Medford, OR | First Interstate Bank |
| $150,000–350,000 | CONFIDENT STAFFING INC | Medford, OR | First Interstate Bank |
| $150,000–350,000 | CONFIDENT STAFFING,INC. | MEDFORD, OR | First Interstate Bank |
| $150,000–350,000 | CONFLUENCE CONSULTING INC | Bozeman, MT | First Interstate Bank |
| $150,000–350,000 | CONSTRUCTION ASSOCIATES OF SPOKANE, INC | SPOKANE, WA | First Interstate Bank |
| $350,000–1 million | CONTINENTAL CONTRACTORS INC | NINE MILE FALLS, WA | First Interstate Bank |
| $350,000–1 million | CONTINENTAL MANUFACTURING CHEMIST, INC. | HUXLEY, IA | First Interstate Bank |
| $150,000–350,000 | CONTINUOUS COMPOSITE INC | COEUR D ALENE, ID | First Interstate Bank |
| $150,000–350,000 | CONTINUOUS COMPOSITES INC | Coeur D Alene, ID | First Interstate Bank |
| $350,000–1 million | CONTRACTOR SERVICES INC. | North Platte, NE | First Interstate Bank |
| $350,000–1 million | CONTRACTOR SERVICES, INC | NORTH PLATTE, NE | First Interstate Bank |
| $150,000–350,000 | COOK RESTAURANTS INC | GLOBE, AZ | First Interstate Bank |
| $1–2 million | COOPER HEATING & COOLING INC | BROOMFIELD, CO | First Interstate Bank |
| $2–5 million | COP CONSTRUCTION LLC | BILLINGS, MT | First Interstate Bank |
| $350,000–1 million | COPPER HEALTH ORO VALLEY LLC | Oro Valley, AZ | First Interstate Bank |
| $350,000–1 million | COPPER HEALTH ORO VALLEY, LLC | Oro Valley,, AZ | First Interstate Bank |
| $350,000–1 million | CORAL CONSTRUCTION COMPANY | SHERWOOD, OR | First Interstate Bank |
| $150,000–350,000 | CORNERSTONE CHRISTAIN ACADEMY | DENVER, CO | First Interstate Bank |
| $350,000–1 million | CORNERSTONE CHRISTIAN FELLOWSHIP INC | CHANDLER, AZ | First Interstate Bank |
| $150,000–350,000 | CORPAC CONSTRUCTION COMPANY | PORTLAND, OR | First Interstate Bank |
| $150,000–350,000 | CORPAC CONSTRUCTION COMPANY | Portland, OR | First Interstate Bank |
| $150,000–350,000 | CORVALLIS MEDICAL GROUP LLC | Corvallis, OR | First Interstate Bank |
| $150,000–350,000 | CORVALLIS MEDICAL GROUP, LLC | CORVALLIS, OR | First Interstate Bank |
| $150,000–350,000 | COSNER CONSTRUCTION CO | SHERIDAN, WY | First Interstate Bank |
| $150,000–350,000 | COSNER CONSTRUCTION COMPANY | Sheridan, WY | First Interstate Bank |
| $150,000–350,000 | COST LESS CARPET TRICITIES INC | RICHLAND, WA | First Interstate Bank |
| $150,000–350,000 | COSTCARE, PLLC | MISSOULA, MT | First Interstate Bank |
| $1–2 million | COTEAU DES PRAIRIES HOSPITAL | SISSETON, SD | First Interstate Bank |
| $1–2 million | COTTAGE GROVE PLACE | CEDAR RAPIDS, IA | First Interstate Bank |
| $350,000–1 million | COTTAGE PARTNERS LLC | Bend, OR | First Interstate Bank |
| $1–2 million | COUNTRY LANDSCAPES INC | AMES, IA | First Interstate Bank |
| $150,000–350,000 | COUNTRYSIDE LIVING OF REDMOND, LLC | REDMOND, OR | First Interstate Bank |
| $150,000–350,000 | COUNTY FAIR FOODS WATERTOWN INC | WATERTOWN, SD | First Interstate Bank |
| $350,000–1 million | COURTESY LINCOLN MERCURY, INC | RAPID CITY, SD | First Interstate Bank |
| $150,000–350,000 | COWBOY STATE HOSPITALITY LLC | Laramie, WY | First Interstate Bank |
| $150,000–350,000 | CRAFTCO METALS SERVICES INCORPORATED | SHERIDAN, WY | First Interstate Bank |
| $150,000–350,000 | CRAIG BROTHERS PLUMBING AND HEATING INCORPORATED | Fort Collins, CO | First Interstate Bank |
| $150,000–350,000 | CRAIG C CHRISTIAN DDS PS INC | Richland, WA | First Interstate Bank |
| $150,000–350,000 | CRAIG C. CHRISTIAN DDS PS | RICHLAND, WA | First Interstate Bank |
| $150,000–350,000 | CREATIVE BUILDING SOLUTIONS LLC | JACKSON, WY | First Interstate Bank |
| $1–2 million | CREATIVE COMMUNITY OPTIONS | JOHNSTON, IA | First Interstate Bank |
| $350,000–1 million | CREATIVE DESIGN BUILDERS | PUYALLUP, WA | First Interstate Bank |
| $350,000–1 million | CREATIVE ENERGIES, LLC | LANDER, WY | First Interstate Bank |
| $1–2 million | CREATIVE ENTERTAINMENT MANAGEMENT, LLC | SAN MARCOS, CA | First Interstate Bank |
| $350,000–1 million | CREATIVE NATURAL PRODUCTS, INC. | BOULDER, CO | First Interstate Bank |
| $150,000–350,000 | CREST TRANSPORTATION, INC. | WHITE CITY, OR | First Interstate Bank |
| $1–2 million | CRESTLINE CONSTRUCTION COMPANY LLC | THE DALLES, OR | First Interstate Bank |
| $150,000–350,000 | CRINERS INC | Boise, ID | First Interstate Bank |
| $150,000–350,000 | CROSSCUT MOUNTAIN SPORTS CENTER INC | Bozeman, MT | First Interstate Bank |
| $150,000–350,000 | CROUTONS INC | Bend, OR | First Interstate Bank |
| $1–2 million | CRUM ELECTRIC SUPPLY CO INC | CASPER, WY | First Interstate Bank |
| $1–2 million | CRUM ELECTRIC SUPPLY CO. INC | Casper, WY | First Interstate Bank |
| $150,000–350,000 | CRUMCO INC. | Overland Park, KS | First Interstate Bank |
| $150,000–350,000 | CRUMCO, INC | OVERLAND PARK, KS | First Interstate Bank |
| $350,000–1 million | CRYSTAL DISTRIBUTION SERVICES, INC. | WATERLOO, IA | First Interstate Bank |
| $150,000–350,000 | CRYSTAL LOUNGE INC | Billings, MT | First Interstate Bank |
| $350,000–1 million | CRYSTAL, INC | URBANDALE, IA | First Interstate Bank |
| $150,000–350,000 | CRYSTALFONTZ AMERICA INC. | SPOKANE, WA | First Interstate Bank |