Exhibit 4.28 THIRD AMENDED AND RESTATED JANUARY 1999 STOCKHOLDERS' AGREEMENT This Third Amended and Restated January 1999 Stockholders' Agreement (this "Agreement") is entered into as of March 10, 2000, by and among McLeodUSA Incorporated, a Delaware...Stockholders' Agreement • May 15th, 2000 • McLeodusa Inc • Radiotelephone communications • Delaware
This Third Amended and Restated November 1998 Stockholders' Agreement (this "Agreement") is entered into as of March 10, 2000, by and among McLeodUSA Incorporated, a Delaware corporation (the "Company"); Alliant Energy Corporation, a Wisconsin...November 1998 Stockholders' Agreement • May 15th, 2000 • McLeodusa Inc • Radiotelephone communications • Delaware
Exhibit 4.38 THIRD SUPPLEMENTAL WARRANT AGREEMENT This Third Supplemental Warrant Agreement (the "Agreement") is made as of March 30, 2000 by and among Splitrock Services, Inc., a Delaware corporation (the "Company"), Splitrock Holdings, Inc., a...Third Supplemental Warrant Agreement • May 15th, 2000 • McLeodusa Inc • Radiotelephone communications • New York
Exhibit 4.37 SECOND SUPPLEMENTAL WARRANT AGREEMENT This Second Supplemental Warrant Agreement (the "Agreement") is made as of March 30, 2000 by and among Splitrock Services, Inc., a Delaware corporation (the "Company"), Splitrock Holdings, Inc., a...Second Supplemental Warrant Agreement • May 15th, 2000 • McLeodusa Inc • Radiotelephone communications • New York
