Interstate Power and Light Co Watch

from 10-K 2 pages Description of Common Stock of Alliant Energy Corporation

from S-3ASR 46 pages Alliant Energy Corporation and [ ], as Trustee Senior Note Indenture Dated as of [___], 20[__] Alliant Energy Corporation Reconciliation and Tie Between Trust Indenture Act of 1939 and Senior Note Indenture, Dated as of [___], 20[__]

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of September 21, 2023 Setting Forth Terms of a Series of Debt Securities 5.700% Senior Debentures Due 2033 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of November 19, 2021 Setting Forth Terms of a Series of Debt Securities 3.100% Senior Debentures Due 2051 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of June 2, 2020 Setting Forth Terms of a Series of Debt Securities 2.300% Senior Debentures Due 2030 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 10-K 4 pages Description of 5.100% Series D Cumulative Perpetual Preferred Stock of Interstate Power and Light Company

from 10-K 2 pages Description of Common Stock of Alliant Energy Corporation

from 8-K 11 pages Interstate Power and Light Company Officer’s Certificate Dated as of September 26, 2019 Setting Forth Terms of a Series of Debt Securities 3.500% Senior Debentures Due 2049 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 11 pages Interstate Power and Light Company Officer’s Certificate Dated as of April 1, 2019 Setting Forth Terms of a Series of Debt Securities 3.60% Senior Debentures Due 2029 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 11 pages Interstate Power and Light Company Officer’s Certificate Dated as of September 26, 2018 Setting Forth Terms of a Series of Debt Securities 4.100% Senior Debentures Due 2028 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of November 15, 2017 Setting Forth Terms of a Series of Debt Securities 3.25% Senior Debentures Due 2024 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of September 15, 2016 Setting Forth Terms of a Series of Debt Securities 3.70% Senior Debentures Due 2046 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of August 18, 2015 Setting Forth Terms of a Series of Debt Securities 3.400% Senior Debentures Due 2025 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of November 24, 2014 Setting Forth Terms of a Series of Debt Securities 3.25% Senior Debentures Due 2024 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of October 8, 2013 Setting Forth Terms of a Series of Debt Securities 4.70% Senior Debentures Due 2043 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 2 pages The Corporation Will Furnish Without Charge to Each Shareholder Upon Request, a Copy of the Full Text of the Powers, Designations, Preferences and Relative, Participating, Optional or Other Rights of the Shares of Each Class of Stock (And Any Series Thereof) Authorized to Be Issued to the Corporation, and the Qualifications, Limitations or Restrictions of Such Preferences and/or Rights, All as Set Forth in the Corporation’s Restated Articles of Incorporation and Amendments Thereto Filed With the Secretary of State of the State of Iowa. the Following Abbreviations, When Used in the Inscription on the Face of This Certificate, Shall Be Construed as Though They Were Written Out in Full According to the Applicable Laws or Regulations

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of August 23, 2010 Setting Forth Terms of a Series of Debt Securities 3.65% Senior Debentures Due 2020 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 10 pages Wisconsin Power and Light Company Officers’ Certificate Dated as of June 10, 2010 Setting Forth Terms of a Series of Debt Securities 4.60% Debentures Due 2020 Pursuant to the Indenture Dated as of June 20, 1997 Officers’ Certificate

from 8-K 10 pages Interstate Power and Light Company Officer’s Certificate Dated as of June 10, 2010 Setting Forth Terms of a Series of Debt Securities 3.30% Senior Debentures Due 2015 Pursuant to the Indenture Dated as of August 20, 2003 Officer’s Certificate

from 8-K 11 pages Wisconsin Power and Light Company Officers’ Certificate Dated as of July 7, 2009 Setting Forth Terms of a Series of Debt Securities 5.00% Debentures Due 2019 Pursuant to the Indenture Dated as of June 20, 1997 Officers’ Certificate