Item 4. MINE SAFETY DISCLOSURES

None.

EXECUTIVE OFFICERS OF THE REGISTRANTS

None of the executive officers for Alliant Energy, IPL or WPL listed below are related to any member of the Board of Directors or nominee for director or any other executive officer. All of the executive officers have no definite terms of office and serve at the pleasure of the Board of Directors. The executive officers of Alliant Energy, IPL and WPL as of the date of this filing are as follows (numbers following the names represent the officer’s age as of the date of this filing):

Executive Officers of Alliant Energy

Patricia L. Kampling, 55, has served as a director since January 2012, and as Chairman of the Board, President and CEO since April 2012. She previously served as President and Chief Operating Officer since February 2011, as EVP and CFO from September 2010 to February 2011, and as EVP-CFO and Treasurer from January 2010 to September 2010.

James H. Gallegos, 54, was elected Senior VP, General Counsel and Corporate Secretary effective February 2015. He previously served as Senior VP and General Counsel since February 2014, as VP and General Counsel from November 2010 to February 2014, and as VP and Corporate General Counsel of BNSF Railway Company, a subsidiary of Burlington Northern and Santa Fe Corporation, from April 2003 to April 2010.

Thomas L. Hanson, 61, was elected Senior VP and CFO effective January 2013. He previously served as VP and CFO since May 2011, as VP-CFO and Treasurer from February 2011 to May 2011, as VP-CAO and Treasurer from September 2010 to February 2011, and as VP-Controller and CAO from January 2007 to September 2010.

Douglas R. Kopp, 61, was elected Senior VP effective March 2014. He previously served as VP-Environmental Affairs since January 2013, as Director-Environmental Affairs from January 2011 to January 2013, as Plant Manager of the Prairie Creek Generating Station from September 2010 to January 2011, and as Plant Manager of the Sutherland Generating Station from May 2009 to September 2010.

John O. Larsen, 51, was elected Senior VP effective February 2014. He previously served as Senior VP-Generation since January 2010.

Robert J. Durian, 44, was elected Controller and CAO effective February 2011. He previously served as Controller since September 2010, and as Assistant Controller from March 2009 to September 2010.

Executive Officers of IPL

Patricia L. Kampling, 55, has served as a director since January 2012, and as Chairman of the Board and CEO since April 2012.

Douglas R. Kopp, 61, was elected Senior VP effective March 2014 and President effective April 2014.

James H. Gallegos, 54, was elected Senior VP, General Counsel and Corporate Secretary effective February 2015.

Thomas L. Hanson, 61, was elected Senior VP and CFO effective January 2013.

John O. Larsen, 51, was elected Senior VP effective February 2014.

Robert J. Durian, 44, was elected Controller and CAO effective February 2011.

Executive Officers of WPL

Patricia L. Kampling, 55, has served as a director since January 2012, and as Chairman of the Board and CEO since April 2012.

John O. Larsen, 51, was elected President effective December 2010.

James H. Gallegos, 54, was elected Senior VP, General Counsel and Corporate Secretary effective February 2015.

Thomas L. Hanson, 61, was elected Senior VP and CFO effective January 2013.

Douglas R. Kopp, 61, was elected Senior VP effective March 2014.

Robert J. Durian, 44, was elected Controller and CAO effective February 2011.

PART II