WISCONSIN POWER & LIGHT CO SEC Filings

MADISON, Wis. - July 30, 2026 - Alliant Energy Corporation (NASDAQ: LNT) today announced U.S. generally accepted accounting principles (GAAP) consolidated unaudited earnings per share (EPS) of $0.65 for second quarter 2026, compared to $...

MADISON, Wis. - April 30, 2026 - Alliant Energy Corporation (NASDAQ: LNT) today announced U.S. generally accepted accounting principles (GAAP) consolidated unaudited earnings per share (EPS) of $0.87 for first quarter 2026, compared to $...

MADISON, Wis. - February 19, 2026 - Alliant Energy Corporation (NASDAQ: LNT) today announced U.S. generally accepted accounting principles (GAAP) consolidated unaudited earnings per share (EPS) of $3.14 for 2025, compared to $2.69 for 20...

On January 5, 2026, the Boards of Directors (the “Boards”) of Alliant Energy Corporation (“Alliant Energy”), Interstate Power and Light Company and Wisconsin Power and Light Company increased the number of directors on the Boards to 11 a...

On December 10, 2025, David A. de Leon, President of Wisconsin Power and Light Company (WPL) and Senior Vice President of Alliant Energy Corporation (Alliant Energy) and Interstate Power and Light Company (IPL, and together with Alliant ...

Schedule A – List of Underwriters’ Purchase AmountsSchedule B – Issuer Free Writing Prospectuses contained in the General Disclosure PackageSchedule C – Pricing InformationSchedule D – Final Term SheetSchedule E – Underwriter Information

MADISON, Wis. - November 6, 2025 - Alliant Energy Corporation (NASDAQ: LNT) today announced U.S. generally accepted accounting principles (GAAP) consolidated unaudited earnings per share (EPS) of $1.09 for the third quarter of 2025, comp...

MADISON, Wis. - August 7, 2025 - Alliant Energy Corporation (NASDAQ: LNT) today announced U.S. generally accepted accounting principles (GAAP) consolidated and non-GAAP consolidated unaudited earnings per share (EPS) for the three months...

MADISON, Wis. - May 8, 2025 - Alliant Energy Corporation (NASDAQ: LNT) today announced U.S. generally accepted accounting principles (GAAP) consolidated unaudited earnings per share (EPS) for the three months ended March 31 as follows:

(b) On March 7, 2025, John O. Larsen informed the Boards of Directors (the Boards) of Alliant Energy Corporation (Alliant Energy), Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL, and together with All...