Company research
INTERSTATE POWER & LIGHT CO
CIK 52485Updated Sep 24, 2026
Filing activity
50 filings on record · 424B5, FWP, 10-Q, 10-K, 8-K, POSASR.
Recent filings
Show 5 more recent filings
10-K filing
8-K filing
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements
Items 5.02
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements
Items 5.02
10-Q filing
Filing attachments
lnt110620258-kex991.htm · 8-K · 2025-11-07
EX-99.1 2 lnt110620258-kex991.htm EX-99.1 Document Exhibit 99.1 Alliant Energy Corporation Corporate Headquarters 4902 North Biltmore Lane Madison, WI 53718-2148 www.alliantenergy.com News Release FOR IMMEDIATE RELEASE ALLIANT ENERGY ANNOUNCES THIRD QUARTER 2025 RESULTS AND 2026 GUIDANCE • Narrowed 2025 ongoing earnings guidance range to $3.17 - $3.23 per share enabled by solid results through the third quarter • Announced 2026 earnings guidance range of $3.36 - $3.46 per …
Read attachment ↗lnt090820258-kex41.htm · 8-K · 2025-09-11
EX-4.1 3 lnt090820258-kex41.htm EX-4.1 Document Exhibit 4.1 INTERSTATE POWER AND LIGHT COMPANY OFFICER’S CERTIFICATE Dated as of September 11, 2025 Setting Forth Terms of a Series of Debt Securities 5.600% Senior Debentures due 2055 Pursuant to the Indenture Dated as of August 20, 2003 OFFICER’S CERTIFICATE The undersigned, the Treasurer of Interstate Power and Light Company, an Iowa corporation (the “Company”), hereby certifies as provided below pursuant to Section 301 of the Inde…
Read attachment ↗lnt090820258-kex991.htm · 8-K · 2025-09-11
EX-99.1 6 lnt090820258-kex991.htm EX-99.1 Document Exhibit 99.1 Interstate Power and Light Company An Alliant Energy Company Corporate Headquarters 4902 North Biltmore Lane Madison, WI 53718-2148 News Release FOR IMMEDIATE RELEASE Media Hotline: (608) 458-4040 Investor Relations: Melissa Kehoe: (608) 458-3124 Interstate Power and Light Company Prices Debt Offering $300 million in senior debentures will be due in 2055 Madison, Wisconsin …
Read attachment ↗lnt080720258-kex991.htm · 8-K · 2025-08-08
EX-99.1 2 lnt080720258-kex991.htm EX-99.1 Document Exhibit 99.1 Alliant Energy Corporation Corporate Headquarters 4902 North Biltmore Lane Madison, WI 53718-2148 www.alliantenergy.com News Release FOR IMMEDIATE RELEASE Media Hotline: (608) 458-4040 Investor Relations: Susan Gille (608) 458-3956 ALLIANT ENERGY ANNOUNCES SECOND QUARTER 2025 RESULTS • Second quarter GAAP earnings per share was $0.68 in 2025, compared to $0.34 in…
Read attachment ↗lnt051320258-kex41.htm · 8-K · 2025-05-19
EX-4.1 3 lnt051320258-kex41.htm EX-4.1 Document Exhibit 4.1 INTERSTATE POWER AND LIGHT COMPANY OFFICER’S CERTIFICATE Dated as of May 19, 2025 Setting Forth Terms of a Series of Debt Securities 5.600% Senior Debentures due 2035 Pursuant to the Indenture Dated as of August 20, 2003 OFFICER’S CERTIFICATE The undersigned, the Treasurer of Interstate Power and Light Company, an Iowa corporation (the “Company”), hereby certifies as provided below pursuant to Section 301 of the Indenture,…
Read attachment ↗lnt051320258-kex991.htm · 8-K · 2025-05-19
EX-99.1 6 lnt051320258-kex991.htm EX-99.1 Document Exhibit 99.1 Interstate Power and Light Company An Alliant Energy Company Corporate Headquarters 4902 North Biltmore Lane Madison, WI 53718-2148 News Release FOR IMMEDIATE RELEASE Media Hotline: (608) 458-4040 Investor Relations: Susan Gille: (608) 458-3956 Interstate Power and Light Company Prices Debt Offering $600 million in senior debentures will be due in 2035 Madison, Wisconsin - Ma…
Read attachment ↗