Principal Financial Group, Inc. 42-1520346 DES Moines 6 31,898 $6.1B Transamerica Corporation 42-1484983 Cedar Rapids 10 42,659 $5.0B RSM US, LLP 42-0714325 Davenport 4 43,190 $3.5B Iowa Health System 42-1435199 West DES Moines 3 61,999 $3.4B HY-VEE, Inc. 42-0325638 West DES Moines 4 88,617 $3.1B Midamerican Energy Company 42-1425214 DES Moines 4 16,911 $2.8B Principal Life Insurance Company 42-0127290 DES Moines 5 169,716 $1.6B HNI Corporation 42-0617510 Muscatine 6 24,745 $1.5B Pella Corporation 42-0497670 Pella 3 18,879 $1.1B Employee Owned Brands, Inc. 42-0990485 Fairfield 6 1,919 $943.0M EMC Insurance Companies 42-0234980 DES Moines 3 6,174 $916.8M Van Meter Inc. 42-1448821 Cedar Rapids 3 2,528 $764.9M Danfoss Power Solutions US Company 42-1345015 AMES 6 9,302 $750.6M Lee Enterprises, Inc. 42-0823980 Davenport 12 5,496 $649.8M Iowa Independent Higher Education Research Foundation 42-1420268 West DES Moines 1 2,536 $621.4M Van G Miller & Associates 42-1280573 Waterloo 8 5,278 $553.4M Iowa Farm Bureau Federation and Affiliated Companies 42-0331840 West DES Moines 3 4,485 $547.1M Kent Corporation 42-0279585 Muscatine 3 3,883 $526.4M Annett Holdings, Inc. 42-1292482 DES Moines 3 13,549 $518.4M Casey's General Stores Inc. 42-0935283 Ankeny 4 65,925 $514.4M Vermeer Corporation 42-0663191 Pella 2 8,172 $498.8M McFarland Clinic, P.C. 42-1089512 AMES 2 2,762 $487.9M Precision Pulley & Idler 42-1089098 Pella 3 2,161 $486.2M Genesis Health System 42-1418847 Davenport 3 12,814 $485.0M Wellmark, Inc. 42-0318333 DES Moines 2 3,898 $467.9M Wells Enterprises, Inc. 42-1080796 LE MARS 4 7,744 $445.8M ITA Group Holdings, Inc. 82-2560400 West DES Moines 1 894 $427.8M S.C. Companies, Inc. 42-1269893 Muscatine 3 2,454 $426.3M Fareway Stores, Inc. 42-0240920 Johnston 2 8,404 $403.8M Intermediaryed 42-0841485 Mount Vernon 9 3,641 $395.3M United Fire & Casualty Co 42-0644327 Cedar Rapids 3 2,397 $391.3M Drake University 42-0680460 DES Moines 3 2,835 $383.3M Trustees of Grinnell College 42-0680387 Grinnell 4 1,985 $378.9M HIBU Inc. 20-0829862 Cedar Rapids 2 2,652 $352.0M Apollo Management Holdings, LP 42-0175020 West DES Moines 3 3,824 $351.5M Musco Corporation 42-1107452 Oskaloosa 6 1,588 $344.3M The Iowa Clinic, P.C. 42-1420077 West DES Moines 8 5,946 $335.0M Plumbers and Steamfitters Local Union No. 33 Retirement Trust 42-6086687 DES Moines 1 1,304 $331.0M Medical Associates Clinic, P.C. 42-1115442 Dubuque 4 3,266 $320.4M Wright Service Corp. 42-1206493 West DES Moines 5 8,599 $304.5M RUAN Transport Corporation 42-0619339 DES Moines 2 10,160 $299.6M Life Care Companies LLC 27-2258399 DES Moines 2 14,154 $295.4M New Cooperative, Inc. 42-1009976 Fort Dodge 2 1,648 $268.3M McCoy Group, Inc. 39-1428371 Dubuque 2 7,621 $266.7M TMG Insurance Services, LLC 42-0645088 West DES Moines 4 1,176 $266.1M Board of Trustees, IBEW Local 405 Deferred Savings Plan 42-1494475 Cedar Rapids 1 886 $262.6M FBL Financial Group, Inc. 42-1411715 West DES Moines 2 569 $253.6M The Finway Group 42-1468222 West DES Moines 34 15,612 $246.2M HMA Group Holdings, LLC 42-0985055 DES Moines 2 2,256 $245.4M Telligen, Inc. 42-0992483 West DES Moines 3 1,996 $245.0M Wellmark, Inc. 35-2772844 DES Moines 1 1,340 $234.8M Grinnell Mutual Reinsurance Company 42-0245990 Grinnell 3 1,727 $223.6M Cottingham and Butler Insurance Services, Inc. 42-0198040 Dubuque 3 4,596 $216.1M Altorfer Inc. 42-0788540 Cedar Rapids 4 2,357 $202.2M Veridian Credit Union 42-1132695 Waterloo 2 1,850 $198.7M The Waldinger Corporation 42-1230944 DES Moines 3 5,592 $198.7M Workiva Inc. 47-2509828 AMES 2 4,264 $188.7M Danfoss Power Solutions II, LLC 85-1065969 AMES 3 2,582 $185.4M TMG Insurance Services, LLC 93-4564667 West DES Moines 2 894 $183.5M Great River Health System, Inc. 42-1193185 West Burlington 2 4,349 $183.1M Mason City Clinic, P.C. 42-1009288 Mason City 8 1,356 $180.0M Greatamerica Financial Services Corporation 42-1425592 Cedar Rapids 2 1,480 $178.6M Fidelity & Guaranty Life Business Services, Inc. 43-1914674 DES Moines 3 3,983 $177.2M Landus Cooperative 42-0243650 DES Moines 7 2,591 $176.7M Farmers Mutual HAIL Insurance Company of Iowa 42-0245840 West DES Moines 9 1,057 $172.2M Roquette America, Inc. 13-3010351 Keokuk 4 887 $171.6M Its Inc. 42-1171146 Johnston 5 2,093 $171.0M Board of Trustees UA Local 125 Retirement Savings Plan 42-1497403 Cedar Rapids 1 1,077 $164.4M Wellabe Services Company 57-1176393 DES Moines 2 726 $162.5M Kemin Worldwide Holdings, Inc. 46-4206956 DES Moines 1 915 $157.9M Wilson Trailer Company 42-0603090 Sioux City 4 1,380 $156.5M American Equity Investment Life Holding Company 42-1447959 West DES Moines 2 840 $152.8M The Weitz Company, LLC 42-1512625 DES Moines 2 2,492 $149.6M Harbor Group Inc. 42-1492435 Sioux Center 2 2,963 $145.4M Heartland Co-OP 42-0242420 Clive 2 1,098 $145.0M Federal Home Loan Bank of DES Moines 42-6000149 DES Moines 1 369 $144.7M Hills Bank and Trust Company 42-0310580 North Liberty 3 1,336 $141.1M Nyemaster Goode, P.C. 42-1154516 DES Moines 4 470 $139.6M IMT Insurance Company 42-0333150 West DES Moines 3 928 $137.1M Manatts, Inc. 42-1377409 Brooklyn 3 3,578 $135.1M A. Y. McDonald Industries, Inc. 42-0404280 Dubuque 2 2,294 $129.3M Chesterman Company 42-0179100 Sioux City 2 2,748 $128.4M Iowa Bankers Benefit Plan Board of Trustees 42-1122086 Johnston 1 12,435 $125.7M ITA Group, Inc. 42-0870370 West DES Moines 2 2,010 $124.2M Greenstate Credit Union 42-0804594 North Liberty 2 1,847 $123.5M St. Ambrose University 42-0703280 Davenport 2 988 $122.5M Martin Brothers Distributing Company, Inc. 42-0841720 Cedar Falls 2 1,193 $118.4M Green Companies, Inc. & Subsidiaries 02-0537858 Cedar Rapids 2 1,277 $115.8M Hawkeye Insurance Association 42-1438152 Urbandale 2 1,318 $115.0M Baker Mechanical, Inc. 42-0890441 Ankeny 2 784 $114.5M Physicians' Clinic of Iowa, P.C. 42-1462899 Cedar Rapids 2 907 $114.2M Cedar Valley Medical Specialists, P.C. 42-1417307 Waterloo 3 1,221 $112.7M DES Moines University Osteopathic Medical Center 42-0730347 West DES Moines 6 1,628 $112.5M Von MAUR, Inc. 42-0465860 Davenport 9 8,230 $112.3M Bankers Trust Company 42-0127385 DES Moines 2 1,053 $111.5M V-T Industries, Inc. 42-0771969 Holstein 5 3,559 $110.6M Shive-Hattery Group, Inc. 42-1481495 Cedar Rapids 2 1,066 $107.9M Innovative AG Services Co. 20-2096489 Monticello 2 611 $104.7M Heartland Express, Inc. of Iowa 42-0758403 North Liberty 2 6,516 $102.6M DES Moines Orthopaedic Surgeons, P.C. 42-0984558 West DES Moines 3 671 $102.2M