| Kenosha Beef International, Ltd. Employees' Pension Plan | Kenosha Beef International Ltd. | Kenosha | WI | DB | 575 |
| Kenosha Beef International, Ltd. Employees' Pension Plan for Non-Union Employees | Kenosha Beef International, Ltd. | Kenosha | WI | DB | 661 |
| Kenosha Community Health Center, Inc. 403(b) Plan | Kenosha Community Health Center Inc. | Kenosha | WI | DC | 182 |
| Kerberrose S.C. 401(k) Profit Sharing Plan | Kerberrose S.C. | Shawano | WI | DC | 327 |
| Kerry Inc. Employees Retirement Plan | Kerry Inc. | Beloit | WI | DB | 1,557 |
| Kerry Inc. Savings Plan | Kerry Inc. | Beloit | WI | DC | 6,528 |
| Kessler's Diamond Center, Inc. 401(k) Plan | Kessler's Diamond Center, Inc. | Germantown | WI | DC | 173 |
| Kesslers Diamond Center Inc. Employee Stock Ownership Plan | Kesslers Diamond Center, Inc. | Germantown | WI | DC | 205 |
| Kewaunee Fabrications LLC 401(k) Plan | Kewaunee Fabrications LLC | Oshkosh | WI | DC | 235 |
| Keylink Holdings, LLC 401(k) Plan | Keylink Holdings, LLC | Milwaukee | WI | DC | 135 |
| K.G. Stevens, Inc. Profit Sharing and Retirement Plan | K.G. Stevens, Inc. | Milwaukee | WI | DC | 190 |
| KHS USA, Inc. Profit Sharing Plan | KHS USA, Inc. | Waukesha | WI | DC | 494 |
| Ki 401(k) Savings Plan | Krueger International, Inc. | Green Bay | WI | DC | 2,621 |
| Kickhaefer Manufacturing Company 401(k) Plan | Kickhaefer Manufacturing Company, LLC | Port Washington | WI | DC | 321 |
| Ki Employee Stock Ownership Plan | Krueger International Inc. | Green Bay | WI | DC | 2,342 |
| Kikkoman Foods, Inc. 401(k) Plan | Kikkoman Foods, Inc. | Walworth | WI | DC | 298 |
| Kilian Management Services, Inc. Savings and Retirement Plan | Kmsjr, Inc. | West Bend | WI | DC | 531 |
| Kimberly-Clark Corporation 401(k) & Profit Sharing Plan | Kimberly-Clark Corporation | Neenah | WI | DC | 17,038 |
| Kimberly-Clark Corporation Pension Plan | Kimberly-Clark Corporation | Neenah | WI | DB | 9,325 |
| Ki Mobility 401(k) Plan | Ki Mobility, LLC | Stevens Point | WI | DC | 479 |
| Kinex/r&m Holdco, LLC Savings Plan | Kinex/r&m Holdco, LLC | Waukesha | WI | DC | 233 |
| King Juice 401(k) Plan | King Juice Company, Inc. | Milwaukee | WI | DC | 124 |
| Kirsh Foundry Savings for Retirement Plan | Kirsh Foundry, Inc. | Beaver Dam | WI | DC | 126 |
| Klondike Cheese Co. 401(k) Retirement Plan | Klondike Cheese Co. | Monroe | WI | DC | 307 |
| Knight Barry Title, Inc. 401(k) Plan | Knight Barry Title, Inc. | Racine | WI | DC | 367 |
| Kobussen Buses, Ltd. 401(k) Profit Sharing Plan | Kobussen Buses, Ltd. | Little Chute | WI | DC | 1,032 |
| Kocourek 401(k) Profit Sharing Plan | Kocourek Chevrolet, Inc. | Wausau | WI | DC | 258 |
| Kohler Co. 401(k) Savings Plan | Kohler Co. & Subsidiaries | Kohler | WI | DC | 5,842 |
| Kohler Co. 401(k) Savings Plan for Administrative Associates | Kohler Co. & Subsidiaries | Kohler | WI | DC | 5,160 |
| Kohler Co. Pension Plan | Kohler Co. & Subsidiaries | Kohler | WI | DB | 23,486 |
| Kohler Credit Union 401(k) Plan and Trust | Kohler Credit Union | Sheboygan | WI | DC | 181 |
| Kohler Credit Union Defined Benefit Plan | Kohler Credit Union | Sheboygan | WI | DB | 125 |
| Kohl's Inc. Savings Plan | Kohl's Inc. | Menomonee Falls | WI | DC | 58,746 |
| Kohn Law Firm S.C. 401(k) Plan | Kohn Law Firm S.C. | Milwaukee | WI | DC | 116 |
| Kolbe & Kolbe Millwork Co., Inc. Retirement Savings Plan | Kolbe & Kolbe Millwork Co., Inc. | Wausau | WI | DC | 1,075 |
| Kolbenschmidt Pistons USA LLC 401(k) Retirement Plan | Kolbenschmidt Pistons USA LLC | Marinette | WI | DC | 174 |
| Komatsu Mining Corp. Retirement Savings Plan | Komatsu Mining Corp. | Milwaukee | WI | DC | 5,494 |
| Komatsu U.S. Pension Plan | Komatsu Mining Corp. | Milwaukee | WI | DB | 9,765 |
| Korth Transfer 401(k) Plan | LLB Investments, LLC DBA Korth Transfer | Reedsburg | WI | DC | 121 |
| Kraemer Brothers Employee Retirement and Savings Plan | Kraemer Brothers, LLC | Plain | WI | DC | 185 |
| Kriete Group Retirement Savings Plan | Kriete Truck Center Milwaukee, Inc. | Milwaukee | WI | DC | 641 |
| Krones, Inc. 401(k) Savings Plan | Krones, Inc. | Franklin | WI | DC | 1,682 |
| Krueger Wholesale Florist, Inc. 401(k) Profit Sharing Plan | Krueger Wholesale Florist, Inc. | Rothschild | WI | DC | 190 |
| Kruger Family Industries 401(k) Plan | Trienda Holdings LLC | Portage | WI | DC | 393 |
| KS Large Bore Pistons, LLC Retirement Plan | KS Large Bore Pistons, LLC | Marinette | WI | DC | 131 |
| KSP Group, Inc. 401(k) Plan | KSP Group, Inc. | Racine | WI | DC | 115 |
| Kuhn North America Retirement Savings Plan | Kuhn North America, Inc. | Brodhead | WI | DC | 935 |
| Kunes Retirement Plan | Kunes Country Ford-Lincoln, Inc. | Delavan | WI | DC | 1,842 |
| K-W Electric 401(K)/RETIREMENT Plan | K-W Electric, Inc. | Plymouth | WI | DC | 133 |
| Kwik Trip Profit Sharing 401(k) Plan | Kwik Trip, Inc. | La Crosse | WI | DC | 30,738 |
| La Casa de Esperanza, Inc. 401(k) Plan | La Casa de Esperanza, Inc. | Waukesha | WI | DC | 206 |
| La Causa Inc. Retirement Savings Plan | La Causa Inc. | Milwaukee | WI | DC | 245 |
| Lac Du Flambeau Band of Lake Superior Chippewa Indians Enterprise 401(k) Plans | Lac Du Flambeau Band of Lake Superior Chippewa Indians | Lac Du Flambeau | WI | DC | 454 |
| Lad Lake 401(k) Plan | Lad Lake, Inc. | Dousman | WI | DC | 281 |
| Laforce, LLC 401(k) Plan | Laforce, LLC | Green Bay | WI | DC | 912 |
| Lake Company of Wisconsin, Inc. 401(k) Plan | Lake Company of Wisconsin, Inc. | Milwaukee | WI | DC | 172 |
| Lakeland Care, Inc. Retirement Savings Plan | Lakeland Care, Inc. | Fond Du Lac | WI | DC | 698 |
| Lakeland University Retirement Plan 403(b) | Lakeland University | Plymouth | WI | DC | 657 |
| Lake Ridge Bancorp, Inc. Employee Stock Ownership Plan | Lake Ridge Bancorp, Inc. | Waunakee | WI | DC | 462 |
| Lake Ridge Bank 401(k) Plan | Lake Ridge Bank | Cross Plains | WI | DC | 537 |
| Lake Shore 401(k) Profit Sharing Plan | Lake Shore III Corporation | Glenwood City | WI | DC | 141 |
| Lake Shore, Inc. Steelworkers Pension Plan | Oldenburg Group Incorporated | Glendale | WI | DB | 163 |
| Lakeside Foods, Inc. Retirement Plan | Lakeside Foods, Inc. | Manitowoc | WI | DC | 2,057 |
| Lakeside International Trucks, Inc. Retirement Plan | Lakeside International Trucks, Inc. | Milwaukee | WI | DC | 432 |
| Lakeside Manufacturing Retirement Plan | Lakeside Manufacturing, Inc. | West Milwaukee | WI | DC | 191 |
| Lakeview Neuro-Rehabilitation Center, Inc. 401(k) Salary Reduction Plan and Trust | Lakeview Neurorehab Center Midwest, Inc. d/b/a Lakeview Specialty | Waterford | WI | DC | 346 |
| Lamers Bus Lines, Inc. 401(k) Profit Sharing Plan | Lamers Bus Lines, Inc. | Green Bay | WI | DC | 1,886 |
| Lanair Products, LLC Retirement Plan | Lanair Products, LLC | Janesville | WI | DC | 129 |
| Landmark Credit Union 401(k) Plan | Landmark Credit Union | Brookfield | WI | DC | 1,136 |
| Landmark Credit Union Defined Benefit Plan | Landmark Credit Union | Brookfield | WI | DB | 578 |
| Lands' End, Inc. Retirement Plan | Lands' End, Inc. | Dodgeville | WI | DC | 4,643 |
| Lannon Stone Products, Inc. & Related Companies 401(k) Plan | Lannon Stone Products, Inc. | Sussex | WI | DC | 142 |
| Larson Management Inc. 401(k) Profit Sharing Plan | Larson Management Inc. | Eau Claire | WI | DC | 309 |
| Latitude Corp. 401(k) Plan | Latitude Corp. | Verona | WI | DC | 229 |
| Latitude Corp. Employee Stock Ownership Plan | Latitude Corp. | Verona | WI | DC | 184 |
| Laughlin / Constable, Inc. 401(k) Savings Plan | Laughlin / Constable, Inc. | Milwaukee | WI | DC | 212 |
| Lavelle Industries, Inc. Profit Sharing and 401(k) Savings Plan | Lavelle Industries, Inc. | Burlington | WI | DC | 481 |
| L. B. White Profit Sharing Plan | L.B. White Company, LLC. | Onalaska | WI | DC | 215 |
| Lco 401(k) Plan | Lac Courte Oreilles Tribal Governing Board | Hayward | WI | DC | 1,342 |
| LDF Business Development Corp. 401(k) Plan | LDF Business Development Corp. | Lac Du Flambeau | WI | DC | 181 |
| Leadcar 401(k) Plan | Leadcar Systems, Inc. | Prairie Du Sac | WI | DC | 325 |
| Lee Beverage of Wisconsin, LLC 401(k) Plan | Lee Beverage of Wisconsin, LLC | Oshkosh | WI | DC | 235 |
| Legacy Flexo Corp. 401(k) Profit Sharing Plan | Legacy Flexo Corp. | Green Bay | WI | DC | 146 |
| Legal Action of Wisconsin, Inc. 401(k) Profit Sharing Plan | Legal Action of Wisconsin, Inc. | Milwaukee | WI | DC | 154 |
| Lemans Corporation 401(k) Savings Plan | Lemans Corporation | Janesville | WI | DC | 1,165 |
| Leman U.S.A. Inc., Profit SHARING/401(K) Plan | Leman U.S.A. Inc. | Sturtevant | WI | DC | 166 |
| Lesaffre International Corporation Retirement Savings Plan | Lesaffre International Corporation | Milwaukee | WI | DC | 934 |
| L.F. George, Inc. 401(k) Savings Plan | L.F. George, Inc. | Waukesha | WI | DC | 132 |
| Lift Solutions Holdings, LLC 401(k) Profit Sharing | Lift Solutions Holdings, LLC | Neenah | WI | DC | 543 |
| Lincoln Contractors Supply, Inc. Employee Stock Ownership Plan | Lincoln Contractors Supply, Inc. | Milwaukee | WI | DC | 138 |
| Link Auto and RV, LLC 401(k) Retirement Plan | Link Auto and RV, LLC | Rice Lake | WI | DC | 125 |
| Link Snacks, Inc. Savings and Retirement Plan | Link Snacks, Inc. | Minong | WI | DC | 3,044 |
| Little Rapids Corporation 401(k) and Retirement Plan | Little Rapids Corporation | Green Bay | WI | DC | 554 |
| Little Rapids Corporation Employees' Pension Plan | Little Rapids Corporation | Green Bay | WI | DB | 183 |
| Livewire Ev, LLC 401(k) Plan | Livewire Ev, LLC | Milwaukee | WI | DC | 225 |
| Lmi Packaging Solutions Inc. Employee Savings Plan | Lmi Packaging Solutions, Inc. | Pleasant Prairie | WI | DC | 134 |
| Loos Machine & Automation, LLC 401(k) Profit Sharing Plan | Loos Machine & Automation, LLC | Colby | WI | DC | 138 |
| Lpi Retirement Savings Plan | Lpi Digital, LLC | New Berlin | WI | DC | 535 |
| L & S Electric, Inc. 401(k) Profit Sharing Plan | L & S Electric, Inc. | Schofield | WI | DC | 468 |
| Lucida 401(k) Plan | Lucida Advisors LLC | Brookfield | WI | DC | 115 |
| Lutheran Home & Harwood Place 403(b) Plan | Lutheranliving Services, Inc. | Wauwatosa | WI | DC | 557 |
| Lutheran Homes of Oconomowoc Retirement Plan | Lutheran Homes of Oconomowoc, Inc. | Oconomowoc | WI | DC | 483 |
| Lutheran Social Services Tax Deferred Annuity Plan | Lutheran Social Services of Wisconsin and Upper Michigan | West Allis | WI | DC | 1,078 |
| Luvata Appleton LLC Investment Plan | Luvata Appleton, LLC | Kimberly | WI | DC | 223 |
| Lynch Companies 401(k) Savings Plan | LDV, Inc. | Burlington | WI | DC | 778 |
| M3 Retirement Savings Plan | M3 Insurance Solutions, Inc. | Madison | WI | DC | 657 |
| Macco's Floor Covering Center Employees' Savings and Retirement Plan | Macco's Floor Covering Center, Inc. | Green Bay | WI | DC | 252 |
| Macdonald & Owen Veneer & Lumber Co., Inc. Profit Sharing Plan | Macdonald & Owen Veneer & Lumber Co., Inc. | West Salem | WI | DC | 205 |
| Machine Service, Inc. Profit Sharing Plan | Machine Service, Inc. | Green Bay | WI | DC | 181 |
| Madison Country Day School Defined Contribution Retirement Plan | Madison Country Day School | Waunakee | WI | DC | 204 |
| Madison Emergency Physicians, S.C. Profit Sharing Plan | Madison Emergency Physicians, S.C. | Madison | WI | DC | 132 |
| Madison Gas and Electric Company 401(k) Retirement Accumulation Plan for Bargaining Employees | Madison Gas and Electric Company | Madison | WI | DC | 184 |
| Madison Gas and Electric Company Retirement Plan | Madison Gas and Electric Company | Madison | WI | DB | 591 |
| Madison Gas and Electric Company Retirement Plan for Bargaining Employees | Madison Gas and Electric Company | Madison | WI | DB | 444 |
| Madison Gas and Electric Company Retirement Savings Plan | Madison Gas and Electric Company | Madison | WI | DC | 376 |
| Madison Gas & Electric Company 401(k) Retirement Accumulation Plan | Madison Gas & Electric Company | Madison | WI | DC | 241 |
| Madison Gas & Electric Company Retirement Savings Plan for Bargaining Employees | Madison Gas & Electric Company | Madison | WI | DC | 287 |
| Madison-Kipp Retirement Savings Plan | Madison-Kipp Corporation | Madison | WI | DC | 612 |
| Madison Medical Affiliates, Inc. Employees' Balanced Profit Sharing Plan | Madison Medical Affiliates, Inc. | Milwaukee | WI | DC | 439 |
| Madison One Holdings, LLC 401(k) Retirement Plan | Madison One Holdings, LLC | Madison | WI | DC | 195 |
| Malteurop North America Inc. 401(k) Savings Plan | Malteurop North America Inc. | Milwaukee | WI | DC | 184 |
| Malteurop North America Inc. Hourly Pension Plan | Malteurop North America Inc. | Milwaukee | WI | DB | 181 |
| Mandel Group, Inc. Salary Savings 401(k) Plan | Mandel Group, Inc. | Milwaukee | WI | DC | 197 |
| Manion's 401(k) Retirement Plan | Manions Wholesale Building Supplies, Inc. | Superior | WI | DC | 306 |
| Manitou Americas Savings Plan | Manitou Equipment America, LLC | West Bend | WI | DC | 1,389 |
| Manitowoc Tool & Machining, LLC 401(k) Profit Sharing Plan | Manitowoc Tool & Machining, LLC | Manitowoc | WI | DC | 375 |
| Manitowoc Tool & Manufacturing, LLC 401(k) Profit Sharing Plan | Manitowoc Tool & Manufacturing, LLC | Manitowoc | WI | DC | 286 |
| Manpowergroup 401(k) Savings Plan | Manpowergroup Inc. | Milwaukee | WI | DC | 22,637 |
| Marathon Cheese Employee's 401(k) Retirement Plan | Marathon Cheese Corporation | Marathon | WI | DC | 2,888 |
| Marc Development Centers DC Retirement Plan | Madison Area Rehabilitation Centers Inc. | Madison | WI | DC | 234 |
| Marchant-Schmidt, Inc. 401(k) Savings Plan | Marchant-Schmidt, Inc. | Fond Du Lac | WI | DC | 119 |
| Marine Credit Union 401(k) Plan | Marine Credit Union | La Crosse | WI | DC | 570 |
| Marion Body Works, Inc. Savings Plan | Marion Body Works, Inc. | Marion | WI | DC | 506 |
| Mark Anderson and Associates, Inc. 401(k) Plan | Mark Anderson & Associates, Inc. | Elmwood | WI | DC | 293 |
| Marking Services, Inc. 401(k) Plan | Marking Services, Inc. | Milwaukee | WI | DC | 250 |
| Markquart, Inc. 401(k) Profit Sharing Plan | Markquart, Inc. | Eau Claire | WI | DC | 520 |
| Marquardt Memorial Manor, Inc. Savings Plan | Marquardt Memorial Manor, Inc. | Watertown | WI | DC | 1,122 |
| Marquette University High School 401(k) Plan | Marquette University High School | Milwaukee | WI | DC | 191 |
| Marquette University Retirement Plan | Marquette University | Milwaukee | WI | DC | 5,316 |
| Marsh Electronics, Inc. 401(k) | Marsh Electronics, Inc. | Milwaukee | WI | DC | 181 |
| Marshfield Clinic Salary Reduction Plan | Marshfield Clinic, Inc. | Marshfield | WI | DC | 13,782 |
| Marten Transport Retirement Savings Plan | Marten Transport, Ltd. | Mondovi | WI | DC | 5,000 |
| Martin's Bulk Milk Service, Inc. Savings Plan | Martin's Bulk Milk Services, Inc. | Wilton | WI | DC | 267 |
| Mason Companies Retirement and Savings Plan | Mason Companies, Inc. | Chippewa Falls | WI | DC | 607 |
| Mastercraft Industries, Inc. 401(k) Plan | Mastercraft Industries, Inc. | Rice Lake | WI | DC | 240 |
| Master Fleet, LLC Savings and Retirement Plan | Master Fleet, LLC | Green Bay | WI | DC | 121 |
| Master Lock Pension Plan | Master Lock Company LLC | Oak Creek | WI | DB | 580 |
| Mastermold LLC 401(k) Plan | Mastermold LLC | Johnson Creek | WI | DC | 415 |
| Masters Building Solutions, Inc. 401(k) Plan | Masters Building Solutions, Inc. | Madison | WI | DC | 111 |
| Masters Gallery Foods, Inc. Retirement Savings Plan | Masters Gallery Foods, Inc. | Plymouth | WI | DC | 1,486 |
| Matenaer Corporation 401(k) Savings Plan | Matenaer Corporation | West Bend | WI | DC | 178 |
| Mathews Archery, Inc. 401(k) Plan | Mathews Archery, Inc. | Sparta | WI | DC | 408 |
| Matthias Academy 401(k) Plan | Matthias Academy Corporation | Benet Lake | WI | DC | 139 |
| Maxus Operations, LLC and Affiliates 401(k) Plan | Maxus Operations, LLC | Elkhorn | WI | DC | 383 |
| Maysteel Industries, LLC 401(k) Retirement Savings Plan | Maysteel Industries, LLC | Allenton | WI | DC | 706 |
| Mayville Engineering Company, Inc. 401(k) Plan | Mayville Engineering Company, Inc. | Milwaukee | WI | DC | 2,852 |
| Mayville Engineering Company, Inc. Employee Stock Ownership Plan | Mayville Engineering Company, Inc. | Mayville | WI | DC | 2,095 |
| M-B Companies, Inc. Deferred Savings Plan | M-B Companies, Inc. | New Holstein | WI | DC | 168 |
| MCC, Inc. 401(k) Profit Sharing Plan | MCC, Inc. | Appleton | WI | DC | 475 |
| McDonald Lumber Company, Inc. 401(k) Plan | McDonald Lumber Company, Inc. | Green Bay | WI | DC | 243 |
| McFarlane Incentive Savings and Profit Sharing Plan | McFarlane Manufacturing Company, Inc. | Sauk City | WI | DC | 235 |
| McKay Nursery Company 401(k) Profit Sharing Plan | McKay Nursery Company | Waterloo | WI | DC | 160 |
| McKay Nursery Employee Stock Ownership Plan | McKay Nursery Company | Waterloo | WI | DC | 107 |
| McKinley Paper Wisconsin Mill 401(k) Plan | McKinley Paper Wi Company | Combined Locks | WI | DC | 383 |
| McMahon Associates, Inc. 401(k) Profit Sharing Plan | McMahon Associates, Inc. | Neenah | WI | DC | 131 |
| McMillan Electric Company Salary Savings Plan | McMillan Electric Company | Woodville | WI | DC | 198 |
| McNally Industries, LLC 401(k) Savings Plan | McNally Industries, LLC | Grantsburg | WI | DC | 154 |
| McRae's U.S. Mail Service, Inc. 401(k) Plan | McRae's U.S. Mail Service, Inc. | Richfield | WI | DC | 385 |
| McWah 403(b) Retirement Plan | Medical College of Wisconsin Affiliated Hospitals, Inc. | Milwaukee | WI | DC | 1,008 |
| Mead & Hunt, Inc. 401(k) Savings Plan | Mead & Hunt, Inc. | Middleton | WI | DC | 1,887 |
| Meca Solutions, LLC 401(k) Plan | Meca Solutions, LLC | Green Bay | WI | DC | 134 |
| Mecum Auctions, Inc. 401(k) Retirement Plan | Mecum Auctions, Inc. | Walworth | WI | DC | 267 |
| Meetings & Incentives Worldwide, Inc. 401(k) P/s Plan | Meetings & Incentives Worldwide, Inc. | Caledonia | WI | DC | 364 |
| Meier-Badger 401(k) Retirement Savings Plan | Badger Coaches, Inc. | Madison | WI | DC | 167 |
| Meister Dairy 401(k) Plan | Meister Cheese Company LLC | Muscoda | WI | DC | 213 |
| Menard, Inc. 401(k) Plan | Menard, Inc. | Eau Claire | WI | DC | 54,287 |
| Menasha Corporation 401(k) Retirement Plan for Union Employees | Menasha Corporation | Neenah | WI | DC | 2,626 |
| Menasha Corporation 401(k) Retirement Savings Plan | Menasha Corporation | Neenah | WI | DC | 8,575 |
| Menominee Indian Tribe of Wisconsin 401(k) Retirement Savings Plan | Menominee Indian Tribe of Wisconsin | Keshena | WI | DC | 1,790 |
| Menominee Tribal Retirement and 401(k) Savings Plan | Menominee Tribal Enterprises | Neopit | WI | DC | 146 |
| Menzner Hardwoods Co. 401(k) Profit Sharing Plan | Menzner Hardwoods Co. | Marathon | WI | DC | 608 |
| Meridian Group 401(k) Savings Plan | Meridian Group Inc. | Middleton | WI | DC | 225 |
| Meridian Industries, Inc. Retirement Plan | Meridian Industries, Inc. | Milwaukee | WI | DC | 1,458 |
| Merit Cro 401(k) Plan | Merit Cro, Inc. | Madison | WI | DC | 186 |
| Meriter 401(k) Plan | Meriter Health Systems, Inc. | Madison | WI | DC | 4,718 |
| Meriter Health Services Employee Retirement Plan | Meriter Health Services, Inc. | Madison | WI | DB | 2,555 |
| Merrill Steel 401(k) Plan | Merrill Iron & Steel, Inc. | Schofield | WI | DC | 546 |
| Messer Cutting Systems, Inc. 401(k) Savings and Investment Plan | Messer Cutting Systems, Inc. | Menomonee Falls | WI | DC | 258 |
| Messer Cutting Systems, Inc. Pension Plan | Messer Cutting Systems, Inc. | Menomonee Falls | WI | DB | 213 |
| Metalcraft of Mayville, Inc. 401(k) Profit Sharing Plan | Metalcraft of Mayville, Inc. | Mayville | WI | DC | 1,178 |
| Metalcraft of Mayville Individuals Bargaining 401(k) Plan | Metalcraft of Mayville, Inc. | Mayville | WI | DC | 352 |
| Metallics, Inc. 401(k) Retirement Plan | Metallics, Inc. | Onalaska | WI | DC | 167 |
| Metaltek International, Inc. 401(k) Retirement Plan | Metaltek International, Inc. | Waukesha | WI | DC | 1,074 |
| Metastar, Inc. Profit Sharing Plan and Trust | Metastar, Inc. | Madison | WI | DC | 133 |
| Metcalfe Markets 401(k) Retirement Savings Plan | Metcalfe Markets Inc. | Madison | WI | DC | 266 |
| Metso Retirement Savings Plan | Metso USA Inc. | Brookfield | WI | DC | 1,384 |
| Meyer Manufacturing Corporation 401(k) Profit Sharing Plan & Trust | Meyer Manufacturing Corporation | Dorchester | WI | DC | 183 |
| Mgic Pension Plan | Mgic Investment Corporation | Milwaukee | WI | DB | 1,630 |
| Mgic Profit Sharing and Savings Plan | Mgic Investment Corporation | Milwaukee | WI | DC | 936 |
| MGS Employee 401(k) Plan | MGS Group North America, Inc. | Germantown | WI | DC | 699 |
| Miba Industrial Bearings 401(k) Plan | Miba Industrial Bearings US LLC | Grafton | WI | DC | 359 |
| Michael Best 401(k) Plan | Michael Best and Friedrich, LLP | Milwaukee | WI | DC | 1,016 |
| Michael Best & Friedrich Employees' Pension Plan | Michael Best & Friedrich, LLP | Milwaukee | WI | DB | 337 |
| Michels Corporation 401(k) Savings Plan | Michels Corporation | Brownsville | WI | DC | 3,146 |
| Microprecision, LLC 401(k) Profit Sharing Plan | Microprecision, LLC | Delavan | WI | DC | 116 |
| Midland Container Corporation Cash Or Deferred PS Plan | Midland Container Corporation | Franksville | WI | DC | 134 |
| Midland Plastics, Inc. Employees 401(k) and Profit-Sharing Plan | Midland Plastics, Inc. | New Berlin | WI | DC | 141 |
| Midwest Carriers 401(k) Plan & Trust | V&S Midwest Carriers, Corp. | Kaukauna | WI | DC | 213 |
| Midwest Communications, Inc. 401(k) Retirement | Midwest Communications, Inc. | Wausau | WI | DC | 534 |
| Midwest Engineered Systems Group 401(k) Plan | Midwest Engineered Systems, Inc. | Waukesha | WI | DC | 176 |
| Midwest Products and Engineering, Inc. 401(k) Savings Plan | Midwest Products and Engineering Inc. | Milwaukee | WI | DC | 337 |
| Midwest Refrigerated 401(k) Plan | Midwest Refrigerated Services, Inc. | Elkhorn | WI | DC | 512 |
| Midwest Stainless Technologies, LLC 401(k) Plan | Midwest Stainless Technologies, LLC | Menomonie | WI | DC | 311 |
| Mid-Wisconsin Beverage, Inc. 401(k) Savings Plan | Mid-Wisconsin Beverage, Inc. | Wausau | WI | DC | 115 |
| Mike Shannon Automotive Inc. Salary Deferral 401(k) Profit Sharing Plan | Holiday Auto | Fond Du Lac | WI | DC | 352 |
| Milaeger's Inc. Profit Sharing Plan | Milaeger's Inc. | Racine | WI | DC | 179 |
| Milazzo Enterprises 401(k) Plan | Milazzo Enterprises, LLC | Wales | WI | DC | 157 |
| Mile Bluff Medical Center, Inc. 401(k) Plan | Mile Bluff Medical Center, Inc. | Mauston | WI | DC | 801 |
| Milkrite Interpuls, Inc. 401(k) Plan | Delaval Inc. | Johnson Creek | WI | DC | 143 |
| Milk Source Companies Retirement Plan | Milk Source, LLC | Kaukauna | WI | DC | 431 |
| Millennium 401(k) Plan | Kyle Enterprises, LLC | Delavan | WI | DC | 244 |
| Miller and Sons, Inc. 401(k) Profit Sharing Plan | Miller and Sons, Inc. | Verona | WI | DC | 195 |
| Miller-Bradford & Risberg, Inc. 401(k) Profit Sharing Plan | Miller-Bradford & Risberg, Inc. | Sussex | WI | DC | 152 |
| Milsco Retirement Plan | Milsco, LLC | Milwaukee | WI | DC | 827 |
| Milwaukee Academy of Science 403(b) Plan | Milwaukee Science Education Consortium, Inc. | Milwaukee | WI | DC | 312 |
| Milwaukee Art Museum, Inc. Employees' Retirement Income Plan | Milwaukee Art Museum, Inc. | Milwaukee | WI | DC | 217 |
| Milwaukee Brewers Baseball Club Pension Plan | Milwaukee Brewers Baseball Club LP | Milwaukee | WI | DB | 578 |
| Milwaukee Brewers Baseball Club Retirement Savings Plan | Milwaukee Brewers Baseball Club, Limited Partnership | Milwaukee | WI | DC | 699 |
| Milwaukee Bucks Retirement Savings Plan | Milwaukee Bucks, LLC | Milwaukee | WI | DC | 512 |
| Milwaukee Center for Independence, Inc. and Affiliates 403(b) Plan | Milwaukee Center for Independence, Inc. | Milwaukee | WI | DC | 981 |
| Milwaukee College Prep School 403(b) Retirement Plan | Milwaukee College Preparatory School of Wisconsin | Milwaukee | WI | DC | 216 |
| Milwaukee Drivers Pension Plan | Board of Trustees Milwaukee Drivers Pension Fund | Milwaukee | WI | DB | 5,239 |
| Milwaukee Electronics Employee Savings and Retirement Plan | Mec International Corporation | Milwaukee | WI | DC | 382 |
| Milwaukee Forge 401(k) Plan | Milwaukee Forge, LLC | Milwaukee | WI | DC | 148 |
| Milwaukee Public Museum, Inc. 401(k) Savings Plan | Milwaukee Public Museum, Inc. | Milwaukee | WI | DC | 206 |
| Milwaukee Rescue Mission Employee Retirement Savings Plan | Milwaukee Rescue Mission | Milwaukee | WI | DC | 238 |
| Milwaukee School of Engineering Defined Contribution Plan | Milwaukee School of Engineering | Milwaukee | WI | DC | 1,147 |
| Milwaukee Valve Company, LLC Employees' Savings Plan and Trust | Milwaukee Valve Co., LLC | New Berlin | WI | DC | 463 |
| Minneapolis-Fowlerville Corporation Retirement Plan | Minneapolis-Fowlerville Corporation | Clear Lake | WI | DC | 186 |
| Minnesota Wire & Cable Co. 401(k) Plan | Minnesota Wire & Cable Co. | Eau Claire | WI | DC | 141 |
| Miravida Living Retirement Plan | Miravida Living, Inc. | Oshkosh | WI | DC | 329 |
| Miron Construction Co., Inc. 401(k) Profit Sharing Plan | Miron Construction Co., Inc. | Neenah | WI | DC | 553 |
| MJ Care, Inc. 401(k) Plan | MJ Care, Inc. | New Berlin | WI | DC | 445 |
| Mlg/prm/valiant 401(k) Plan | MLG Services Corp. | Brookfield | WI | DC | 946 |
| Modern Door Corporation Employees' 401(k) Profit Sharing Plan and Trust | Modern Door Corporation | Elkhart Lake | WI | DC | 110 |
| Modine Manufacturing Company 401(k) Retirement Plan | Modine Manufacturing Company | Racine | WI | DC | 4,683 |
| Molded Dimensions, LLC 401(k) Salary Reduction Plan & Trust | Molded Dimensions, LLC | Port Washington | WI | DC | 266 |
| Molded Rubber & Plastic 401(k) Salary Reduction Plan | Molded Rubber & Plastic Corporation | Butler | WI | DC | 268 |
| Mole Lake Casino 401(k) Plan | Sokaogon Gaming Enterprise | Crandon | WI | DC | 179 |
| Molson Coors Consolidated Retirement and Thrift Savings Plan | Molson Coors Beverage Company USA LLC | Milwaukee | WI | DC | 2,757 |
| Molson Coors Employees' Retirement and Savings Plan | Molson Coors Beverage Company USA LLC | Milwaukee | WI | DC | 9,895 |
| Molson Coors Pension Plan | Molson Coors Beverage Company USA LLC | Milwaukee | WI | DB | 6,627 |
| Monroe Truck Equipment, Inc. Profit Sharing and Savings Plan | Monroe Truck Equipment, Inc. | Monroe | WI | DC | 1,128 |
| Morgan Murphy Media Savings & Profit Sharing Plan | Television Wisconsin, Inc. | Madison | WI | DC | 988 |
| Morgridge Institute for Research 401(k) Plan | Morgridge Institute for Research | Madison | WI | DC | 253 |
| Morrow Memorial Home for the Aged 401(k) & Profit Sharing Plan | Morrow Memorial Home | Sparta | WI | DC | 226 |
| Morrow Memorial Home for the Aged, Inc. | Morrow Memorial Home for the Aged, Inc. | Sparta | WI | DC | 107 |
| Morton Drug Company Employees Profit Sharing Plan | Morton Drug Company | Neenah | WI | DC | 197 |
| Motis Brands, Inc. 401(k) Plan | Motis Brands, Inc. | Germantown | WI | DC | 339 |
| Moxe Health 401(k) Plan | Moxe Health Corporation | Madison | WI | DC | 120 |
| Mra - the Management Association, Inc. 401(k) Plan | Mra - the Management Association, Inc. | Waukesha | WI | DC | 270 |
| Msa Professional Services, Inc. Employee Stock Ownership Plan | Msa Professional Services, Inc. | Baraboo | WI | DC | 558 |
| Msa Professional Services, Inc. Savings Plan | Msa Professional Services, Inc. | Baraboo | WI | DC | 682 |
| MSP Real Estate 401(k) Plan | MSP Real Estate | West Allis | WI | DC | 897 |
| Mueller Sports Medicine Inc. 401(k) Retirement Plan | Mueller Sports Medicine, Inc. | Prairie Du Sac | WI | DC | 161 |
| Mullins Cheese, Inc. Profit Sharing Plan | Mullins Cheese, Inc. | Mosinee | WI | DC | 330 |
| Multistack, LLC 401(k) Plan | Multistack, LLC | Sparta | WI | DC | 264 |
| Musson Bros., Inc. 401(k) Retirement Plan | Musson Bros., Inc. | Rhinelander | WI | DC | 210 |
| Muth Company 401(k) Plan | Muth Company, LLC | Sheboygan | WI | DC | 188 |
| Muza Metal Products, LLC 401(k) Savings Plan | Muza Metal Products, LLC | Oshkosh | WI | DC | 201 |
| Mypath 401(k) Retirement Plan | Oconomowoc Residential Programs, Inc. | Oconomowoc | WI | DC | 2,210 |
| Mypath Employee Stock Ownership Plan | Oconomowoc Residential Programs, Inc. | Oconomowoc | WI | DC | 2,267 |
| Nabco Entrances, Inc. 401(k) Plan | Nabco Entrances, Inc. | Muskego | WI | DC | 212 |
| Namakagon Management 401(k) Plan | Namakagon Management LLC | Wausau | WI | DC | 212 |
| Nasco Pension Plan | Nasco Education LLC | Fort Atkinson | WI | DB | 321 |
| Nasonville Dairy, Inc. Retirement Plan | Nasonville Dairy, Inc. | Marshfield | WI | DC | 180 |
| Nassco, Inc. Profit Sharing and 401(k) Plan | Nassco, Inc. | New Berlin | WI | DC | 252 |
| National Bank of Commerce 401(k) Profit Sharing Plan | Natcom Bancshares, Inc. | Superior | WI | DC | 325 |
| National Business Furniture Performance Retirement Plan | National Business Furniture, LLC | Milwaukee | WI | DC | 317 |
| National Conference of Bar Examiners 403(b) Plan | National Conference of Bar Examiners | Madison | WI | DC | 178 |
| National Electrostatics Corp. Employee Stock Ownership Plan | National Electrostatics Corp. | Middleton | WI | DC | 114 |
| National Exchange Bank and Trust Employees' Tax Savings Plan | Neb Corporation | Fond Du Lac | WI | DC | 520 |
| National Guardian Life Insurance Company Pension Plan for Employees | National Guardian Life Insurance Company | Madison | WI | DB | 637 |
| National Guardian Life Savings Plan | National Guardian Life Insurance Company | Madison | WI | DC | 538 |
| Natural Beauty Growers Employee Stock Ownership Plan | NBG Holdings, Inc. | Denmark | WI | DC | 198 |
| Natural Beauty Growers, LLC Retirement Savings Plan | Natural Beauty Growers, LLC | Denmark | WI | DC | 105 |
| Naturescape 401(k) Retirement Plan | Naturescape | Muskego | WI | DC | 361 |
| Nature's Way 401(k) Plan | Schwabe North America | Green Bay | WI | DC | 881 |
| Naviant 401(k) Plan | Naviant, LLC. | Verona | WI | DC | 196 |
| Navitus Health Solutions, LLC Retirement Plan | Navitus Health Solutions, LLC | Madison | WI | DC | 2,180 |
| Nbi, Inc. Profit Sharing and 401(k) Plan | Nbi, Inc. | Altoona | WI | DC | 142 |
| Neenah Consolidated Pension Plan | Neenah Foundry Company | Neenah | WI | DB | 686 |
| Neenah Enterprises, Inc. 401(k) Retirement Savings Plan | Neenah Enterprises, Inc. | Neenah | WI | DC | 1,148 |
| Nekoosa Retirement Savings Plan | Nekoosa Coated Products, LLC | Nekoosa | WI | DC | 330 |
| Nelson Global Products 401(k) Plan | Nelson Global Products Inc. | Stoughton | WI | DC | 1,037 |
| Nelson-Jameson, Inc. Retirement Plan | Nelson-Jameson, Inc. | Marshfield | WI | DC | 421 |
| Nesnah Ventures LLC Employee Savings Plan | Nesnah Ventures LLC | Lacrosse | WI | DC | 241 |
| Network Health, Inc. 401(k) Plan | Network Health, Inc. | Menasha | WI | DC | 672 |
| Neugen LLC Employees' 401(k) Plan | Neugen LLC | Madison | WI | DC | 204 |
| Neuman Pools, Inc. 401(k) Retirement Plan | Neuman Pools, Inc. | Beaver Dam | WI | DC | 185 |
| Neuroscience Group of Northeast Wisconsin, S.C. Cash Balance Plan | Neuroscience Group of Northeast Wisconsin, S.C. | Neenah | WI | DB | 172 |
| Neuroscience Group of Northeast Wisconsin,s.c. Profit Sharing Plan and Trust | Neuroscience Group of Northeast Wisconsin, S.C. | Neenah | WI | DC | 219 |
| New Berlin Plastics 401(k) Plan | New Berlin Plastics, Inc. | New Berlin | WI | DC | 142 |
| New Glarus Brewing Company 401(k) Plan | New Glarus Brewing Company | New Glarus | WI | DC | 120 |
| New Glarus Brewing Company Employee Stock Ownership Plan | New Glarus Brewing Company | New Glarus | WI | DC | 112 |
| N. E. W. Industries, Inc. 401(k) Profit Sharing Plan | N.E.W. Industries, Inc. | Sturgeon Bay | WI | DC | 179 |
| N.E.W. Plastics Corp. 401(k) Profit Sharing Plan | N.E.W. Plastics Corp. | Luxemburg | WI | DC | 293 |
| New Resources Companies 401(k) Plan | New Resources Companies, Inc. | Milwaukee | WI | DC | 183 |
| Next Door Savings & Retirement Plan | Next Door Foundation, Inc. | Milwaukee | WI | DC | 336 |
| Nicolet National Bank 401(k) Plan | Nicolet National Bank | Green Bay | WI | DC | 1,198 |
| Nilssen's Supervalu 401(k) Plan | T & W Supermarket, Inc. | Baldwin | WI | DC | 182 |
| N & M Transfer Co. Inc. 401(k) Profit Sharing Plan | N & M Transfer Co., Inc. | Neenah | WI | DC | 836 |
| Noble Community Clinic Retirement 401(k) Plan | Noble Community Clinic | Wautoma | WI | DC | 279 |
| Nog, Inc. 401(k) Plan | Nog, Inc. | Sussex | WI | DC | 157 |
| Nolato USA Profit Sharing 401(K )plan | Nolato Contour Inc. | Baldwin | WI | DC | 477 |
| Nord Gear Corporation 401(k) Profit Sharing Plan | Nord Gear Corporation | Waunakee | WI | DC | 661 |
| Nordic Consulting Partners, Inc. 401(k) Plan | Nordic Consulting Partners, Inc. | Madison | WI | DC | 3,591 |
| Nordic Group of Companies, Ltd. Employees' 401(k) Savings and | Nordic Group of Companies, Ltd. | Baraboo | WI | DC | 918 |
| Norlen Inc. 401(k) Profit Sharing Plan and Trust | Norlen, Inc. | Schofield | WI | DC | 155 |
| Norris, Inc. Pension Plan | Norris, Inc. | Mukwonago | WI | DB | 124 |
| Nortek Retirement Plan | Broan-Nutone LLC | Hartford | WI | DB | 858 |
| North Central States Regional Council of Carpenters Pension Fund | Joint Board of Trustees of North Central States Regional Council of | Eau Claire | WI | DB | 18,092 |
| North Central States Regional Council of Carpenters Supplemental Retirement Plan | Joint Board of Trustees of North Central States Regional Council of | Eau Claire | WI | DC | 11,776 |
| Northeast Communications of Wi, Inc. DBA Nsight | Northeast Communications of Wi, Inc. DBA Nsight | Green Bay | WI | DC | 1,112 |
| Northern Clearing 401(k) Plan | Northern Clearing Inc. | Ashland | WI | DC | 260 |
| Northern Engraving Corporation Salaried Savings Plus Plan | Northern Engraving Corporation | Sparta | WI | DC | 169 |
| Northern Engraving Corporation Savings Plus Plan | Northern Engraving Corporation | Sparta | WI | DC | 334 |
| Northland Electrical Services 401(k) Retirement Plan | Northland Electrical Services, LLC | New London | WI | DC | 178 |
| North Shore Bank 401(k) Plan | North Shore Bank | Brookfield | WI | DC | 592 |
| North Shore Bank Retirement Plan | North Shore Bank | Brookfield | WI | DB | 291 |
| North Shore Healthcare, LLC Retirement Savings Plan | North Shore Healthcare, LLC | Milwaukee | WI | DC | 3,591 |
| Northside Elevator, Inc. Profit Sharing Plan | Northside Elevator, Inc. | Loyal | WI | DC | 135 |
| Northwest Counseling and Guidance Clinic, Inc. 401(k) Plan | Northwest Counseling and Guidance Clinic, Inc. | Siren | WI | DC | 318 |
| Northwinds Technology Solutions Retirement Plan | Northwinds Technology Solutions LLC | Stevens Point | WI | DC | 260 |
| Northwire, Inc. 401(k) Plan | Northwire, Inc. | Osceola | WI | DC | 216 |
| Notre Dame School of Milwaukee 401(k) Plan | Notre Dame School of Milwaukee | Milwaukee | WI | DC | 170 |
| Novares US Engine Components, Inc. 401(k) Savings Plan | Novares US Engine Components, Inc. | Walworth | WI | DC | 923 |
| Novum Structures, LLC 401(k) Retirement Plan | Novum Holdings LLC | Menomonee Falls | WI | DC | 118 |
| NPS Holdings LLC 401(k) Retirement Savings Plan | NPS Holdings LLC | Green Bay | WI | DC | 282 |
| Nueske Meats Retirement Savings Plan and Trust | Nueske Meat Products, Inc. | Wittenberg | WI | DC | 244 |
| Oakbrook Corporation Salary Deferral Profit Sharing Plan | Oakbrook Corporation | Madison | WI | DC | 345 |
| Oakleaf Clinics, Inc. Profit Sharing Plan | Oakleaf Clinics, Inc. | Eau Claire | WI | DC | 441 |
| Oakleaf Surgical Hospital LLC Profit Sharing Plan | Oakleaf Surgical Hospital LLC | Altoona | WI | DC | 476 |
| Oak Ridge Care Center Inc. 401(k) Plan | Oak Ridge Care Center, Inc. | Union Grove | WI | DC | 222 |
| Oakwood Village University Woods Homes, Inc. 403(b) Plan | Oakwood Village University Woods Homes, Inc. | Madison | WI | DC | 806 |
| O'Brien and Associates 401(k) Plan | O'Brien Services Inc. | Holmen | WI | DC | 467 |
| Octopi Brewing 401(k) Plan | Octopi Brewing LLC | Waunakee | WI | DC | 266 |
| Oec Graphics, Inc. Retirement Plan | Oec Graphics, Inc. | Oshkosh | WI | DC | 256 |
| Oem Fabricators, Inc. 401(k) Plan & Trust | Oem Fabricators, Inc. | Woodville | WI | DC | 357 |
| O&h Danish Bakery, Inc. 401(k) Plan | O&h Danish Bakery, Inc. | Racine | WI | DC | 278 |
| Oh Snap! Pickling, LLC Retirement Savings Plan | Escargot Holdings, LLC | Appleton | WI | DC | 157 |
| Oldenburg Group Incorporated Savings Plan | Oldenburg Group Incorporated | Glendale | WI | DC | 206 |
| Olds Products Company Employee Savings and Retirement Plan | Olds Products Co. of Illinois | Pleasant Prairie | WI | DC | 252 |
| Olympus Group, Inc. 401(k) Plan | Olympus Group, Inc. | Milwaukee | WI | DC | 270 |
| Omega Enterprises, Inc. and Subsidiaries 401(k) Savings and Retirement Plan | Omega Enterprises, Inc. and Subsidiaries | Kaukauna | WI | DC | 226 |
| Omni Glass & Paint, LLC 401(k) Profit Sharing Plan | Omni Glass & Paint, LLC | Oshkosh | WI | DC | 209 |
| One Automotive Group 401(k) Plan | Ken Vance Car City, Inc. | Eau Claire | WI | DC | 237 |
| One Community Bank 401(k) Retirement Plan | One Community Bank | McFarland | WI | DC | 264 |
| Oneida Esc Group, LLC 401(k) Profit Sharing Plan | Oneida Esc Group, LLC | Milwaukee | WI | DC | 577 |
| Oneida Nation Enterprise 401(k) Plan | Oneida Nation | Oneida | WI | DC | 1,207 |
| Onetouchpoint Retirement Savings Plan | Onetouchpoint Holdings, LLC | Hartland | WI | DC | 599 |
| Oostburg Concrete Products, Inc. 401(k) Plan | Oostburg Concrete Products, Inc. | Oostburg | WI | DC | 140 |
| Open Sky Education 403(b) Plan | Open Sky Education, Inc. | Waukesha | WI | DC | 821 |
| Operating Engineers Local 139 Defined Contribution Annuity Fund | Trustees -Operating Engineers Local 139 Defined Contribution Annuity F | Pewaukee | WI | DC | 9,375 |
| Operative Plasterers and Cement Masons Local 204 Pension FD | Board of Trustees Operative Plasterers and Cement Masons Local 204 Pen | Madison | WI | DB | 621 |
| Operative Plasterers & Cement Masons Loc 599 RT PL | Operative Plasterers & Cement Masons Local 599 Area 204 Supp Ret Plan | Madison | WI | DC | 157 |
| Opportunity Development Centers, Inc. 401(k) Retirement Plan | Opportunity Development Centers, Inc. | Wisconsin Rapids | WI | DC | 241 |
| Optima Corporation Retirement Plan | Optima Machinery Corporation | Green Bay | WI | DC | 172 |
| Options in Community Living 401(k) Plan | Options in Community Living, Inc. | Madison | WI | DC | 267 |
| Orc Industries, Inc. Retirement and Savings Plan | Orc Industries, Inc. | La Crosse | WI | DC | 343 |
| Orion Energy Systems, Inc. 401(k) Plan | Orion Energy Systems, Inc. | Manitowoc | WI | DC | 308 |
| Orthopaedic Associates of Wisconsin, S.C. Defined Benefit Plan | Orthopaedic Associates of Wisconsin, S.C. | Pewaukee | WI | DB | 211 |
| Orthopaedic Associates of Wisconsin, S. C. Profit Sharing Plan | Orthopaedic Associates of Wi | Pewaukee | WI | DC | 308 |
| Orthopaedic Centers of Wisconsin, S.C. 401(k) Plan | Orthopaedic Centers of Wisconsin, S.C. | Wausau | WI | DC | 179 |
| Orthopedic & Sports Institute of the Fox Valley SC 401(k) Profit Sharing Plan | Orthopedic & Sports Institute of the Fox Valley SC | Appleton | WI | DC | 142 |
| Orthopedic & Sports Medicine Specialists of Green Bay SC 401(k) Plan | Orthopedic & Sports Medicine Specialists of Green Bay SC | Green Bay | WI | DC | 289 |
| Orthopedic & Sports Medicine Specialists of Green Bay SC Cash Balance Plan | Orthopedic & Sports Medicine Specialists of Green Bay SC | Green Bay | WI | DB | 180 |
| Orthopedic Surgeons of Wisconsin, S.C. Retirement Plan | Orthopedic Surgeons of Wisconsin, S.C. | Milwaukee | WI | DC | 146 |
| Osceola Medical Center 403(b) Tax Deferred Annuity Plan | Ladd Memorial Hospital DBA Osceola Medical Center | Osceola | WI | DC | 415 |
| Oshkosh Corporation and Affiliates Tax-Deferred Investment Plan | Oshkosh Corporation | Oshkosh | WI | DC | 18,364 |
| Oshkosh Corporation Hourly Employees' Retirement Plan | Oshkosh Corporation | Oshkosh | WI | DB | 2,353 |
| Oshkosh Corporation Tax Deferred Investment Plan for Production Employees | Oshkosh Corporation | Oshkosh | WI | DC | 1,866 |
| Oshkosh Door Company 401(k) Plan | Oshkosh Door Company | Oshkosh | WI | DC | 202 |
| Outagamie Co-Op Services, Inc. Retirement Savings Plan | Outagamie Co-Op Services, Inc. | Little Chute | WI | DC | 181 |
| Outpost Natural Foods Cooperative 401(k) Plan and Trust | Outpost Natural Foods Cooperative | Milwaukee | WI | DC | 400 |
| Outreach Community Health Centers, Inc. 401(k) Plan | Outreach Community Health Center | Milwaukee | WI | DC | 198 |
| Outsource, Inc. 401(k) Profit Sharing Plan & Trust | Outsource, Inc. | Waukesha | WI | DC | 103 |
| Overture Center Foundation 401(k) Retirement Plan | Overture Center Foundation | Madison | WI | DC | 143 |
| Ownersedge Employee Stock Ownership Plan | Ownersedge Inc. | Waukesha | WI | DC | 357 |
| Ownersedge, Inc. 401(k) Profit Sharing Plan | Ownersedge, Inc. | Waukesha | WI | DC | 393 |
| Packer City International Trucks, Inc. 401(k) Retirement Savings Plan | Packer City International Trucks, Inc. | Green Bay | WI | DC | 150 |
| Packer Fastener & Supply 401(k) Plan | Packer Fastener & Supply Company | Green Bay | WI | DC | 259 |
| Pacur 401(k) Profit Sharing Plan and Trust | Pacur LLC | Oshkosh | WI | DC | 188 |
| Painters Local Union 802 Retirement Plan | Trustees of Painters Local Union 802 | Fitchburg | WI | DB | 1,095 |
| Palermo Villa, Inc. 401(k) Plan | Palermo Villa, Inc. | Milwaukee | WI | DC | 1,224 |
| Palmen Motors, Inc. Profit Sharing 401(k) Plan & Trust | Palmen Motors, Inc. | Kenosha | WI | DC | 210 |
| Palmer Johnson Incentive Savings Plan | Palmer Johnson Enterprises, Inc. | Sun Prairie | WI | DC | 232 |
| Paper Machinery Corporation 401(k) Plan | Paper Machinery Corporation | Milwaukee | WI | DC | 214 |
| Paper Machinery Holding Corporation Employee Stock Ownership Plan | Paper Machinery Corporation | Milwaukee | WI | DC | 260 |
| Paper Transport 401(k) Plan | Paper Transport Holdings, LLC | De Pere | WI | DC | 1,024 |