Material Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549     FORM 8-K     CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (Date of earliest event reported): December 14, 2022     ALLIANT ENERGY CORP ORATION (Exact name of registrant as specified in its charter)       Wisconsin   1-9894   39-1380265 (State or other jurisdiction of incorporation)   (Commission file number)   (I.R.S. Employer Identification Number)   4902 N. Biltmore Lane Madison , Wisconsin   53718 (Address of principal executive offices)   (Zip Code) Registrant’s telephone number, including area code: ( 608 ) 458-3311     Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:   ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)   ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)   ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))   ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Alliant Energy Corporation, Common Stock, $0.01 Par Value , Trading Symbol: LNT , Nasdaq Global Select Market Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company   ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐       Item 1.01 Entry into a Material Definitive Agreement. On December 14, 2022, Alliant Energy Corporation (the “Company”), entered into a distribution agreement (the “Distribution Agreement”) with Barclays Capital Inc., Mizuho Securities USA LLC and Wells Fargo Securities, LLC (each, an “Agent” and together, the “Agents”). Pursuant to the terms of the Distribution Agreement, the Company may sell from time to time through any Agent, as the Company’s sales agent, shares of the Company’s common stock, par value $0.01 per share, having an aggregate offering price of up to $225,000,000 (the “Shares”). Sales of the Shares, if any, will be made by means of ordinary brokers’ transactions on the Nasdaq Global Select Market at market prices, in block transactions or as otherwise agreed by the Company and the Agents. The Company intends to use the net proceeds from the sales of the Shares, after deducting the Agents’ commission and offering expenses, for general corporate purposes, which may include repayment or refinancing of debt, working capital, construction and acquisition expenditures, investments and repurchases and redemptions of securities. Under the terms of the Agreement, the Company may also sell Shares from time to time to any Agent as principal for its own account at a price to be agreed upon at the time of sale. Any sale of Shares to an Agent as principal would be pursuant to the terms of a separate terms agreement between the Company and such Agent. The Shares will be issued pursuant to the Company’s Registration Statement on Form S-3 (Registration No. 333-251353). The Company filed a prospectus supplement, dated December 14, 2022, with the Securities and Exchange Commission in connection with the offer and sale of the Shares. You may obtain these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, the Company or the Agents will arrange to send you the prospectus supplement if you request it by contacting Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717, telephone: (888) 603-5847, email: barclaysprospectus@broadridge.com; Mizuho Securities USA LLC, Attention: Equity Capital Markets, 1271 Avenue of the Americas, 3rd Floor, New York, NY 10020, telephone: (212) 205-7600, email: US-ECM@mizuhogroup.com; and Wells Fargo Securities, LLC, Attention: Equity Syndicate Department, 500 West 33rd Street, New York, NY 10001, telephone: (833) 690-2713, email: cmclientsupport@wellsfargo.com. The Agents and their respective affiliates have provided, and may in the future provide, a variety of financial and non-financial services to the issuer and to persons and entities with relationships with the issuer, for which they received or will receive customary fees and expenses. In particular, an affiliate of each of Barclays Capital Inc., Mizuho Securities USA LLC and Wells Fargo Securities, LLC is a lender under the Company’s credit facility. This Current Report on Form 8-K shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of the Company’s common stock in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state. The foregoing description of the Distribution Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Distribution Agreement, a copy of which is filed herewith as Exhibit 1.1 and is incorporated by reference herein. A legal opinion relating to the Shares is filed herewith as Exhibit 5.1. Item 9.01 Financial Statements and Exhibits . (d)    Exhibits   Exhibit No.    Description   1.1    Distribution Agreement, dated December 14, 2022, among Alliant Energy Corporation, Barclays Capital Inc., Mizuho Securities USA LLC and Wells Fargo Securities, LLC.   5.1    Opinion of Perkins Coie LLP, with respect to the legality of the securities being registered. 23.1    Consent of Perkins Coie LLP (contained in Exhibit 5.1 hereto). SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, Alliant Energy Corporation has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.           ALLIANT ENERGY CORPORATION Date: December 14, 2022     By:   /s/ Robert J. Durian       Robert J. Durian       Executive Vice President and Chief Financial Officer