LNT 8-K Current Reports

Material AgreementsFinancial EventsExhibits & Filings

Alliant Energy 8-K Report, Financial Results (Oct 30, 2026)

Alliant Energy Corporation (NASDAQ: LNT) reported unaudited GAAP earnings per share of $1.52 for the third quarter of 2026, compared with $1.09 for the third quarter of 2025. For the first nine months of 2026, GAAP EPS was $3.04, up 17% from $2.59, and ongoing EPS was $2.99, up 14% from $2.62. The company narrowed its 2026 ongoing EPS guidance to $3.41 to $3.46 from $3.36 to $3.46, which it describes as the top half of the original range. The filing furnishes the third-quarter earnings press release (Exhibit 99.1), which also covers the company's 2027 outlook. For 2027, the company issued ongoing EPS guidance of $3.63 to $3.73 and set an annual common stock dividend target of $2.25 per share, up from the current annual target of $2.14. The release says the 2027 EPS midpoint represents 8% growth over the midpoint of the original 2026 ongoing EPS guidance. Management also raised its 2026 to 2030 capital expenditure forecast by 19% to $15.9 billion, citing growing demand. The company reports 3.4 gigawatts of contracted demand from data centers at IPL and WPL and expects peak demand to rise about 60% by 2031. On the regulatory front, the company is extending IPL's retail electric base rate stability plan by one year, through 2030, while earning its authorized return on equity. Balance sheet data show cash and cash equivalents of $26 million at September 30, 2026, versus $556 million at December 31, 2025, and commercial paper of $704 million, versus $88 million. Long-term debt, net, excluding current portion, was $11,085 million.

Oct 30, 2026 8-K

Alliant Energy 8-K Report, Material Agreement (Oct 28, 2026)

On October 26, 2026, Wisconsin Power and Light Company (WPL) and Interstate Power and Light Company (IPL), both wholly owned subsidiaries of Alliant Energy Corporation, entered into loan guarantee agreements, note purchase agreements, and future advance promissory notes with the U.S. Department of Energy under the DOE Loan Guarantee Program established under Title XVII of the Energy Policy Act of 2005. The filing states that Alliant Energy Corporation is not a party to, and has no direct obligations under, these Loan Documents, and that each subsidiary has no obligations under the other's documents. Under the facilities, WPL may borrow up to $1,626,488,000 and IPL up to $3,500,000,000 through the Federal Financing Bank to reimburse up to 80% of eligible project costs for projects such as generation, transmission, substations, energy storage and grid resilience technologies. Borrowings are full recourse, senior unsecured obligations of each subsidiary, with a scheduled final maturity of May 15, 2056. Each advance bears interest at a U.S. Treasury rate plus 37.5 basis points, and the availability period runs until the earliest of September 15, 2033, the maximum loan amount being reached, or termination. The agreements contain customary covenants and events of default, including compliance with DOE Program Requirements, and mandatory prepayment provisions tied to eligible project status, a 95% regulatory cost recovery threshold, and changes in control (35% or more beneficial ownership of the borrower). The filing also notes that advances are conditioned on items such as completion of DOE environmental review, receipt of state regulatory approvals, and confirmation of investment grade credit ratings.

Oct 28, 2026 8-K

Alliant Energy 8-K Report, Corporate Update (Aug 21, 2026)

Interstate Power and Light Company (IPL), a wholly owned subsidiary of Alliant Energy Corporation (NASDAQ: LNT), entered into an Underwriting Agreement dated August 18, 2026 with Mizuho Securities USA LLC, PNC Capital Markets LLC, U.S. Bancorp Investments, Inc., and Wells Fargo Securities, LLC, as representatives of the underwriters, to sell $500 million aggregate principal amount of its 5.100% Senior Debentures due 2031 in a public offering. The offering is expected to close on August 21, 2026, subject to customary closing conditions. The debentures are being issued under a 2003 indenture with The Bank of New York Mellon Trust Company, N.A., as successor trustee, and are registered under an automatic shelf registration statement on Form S-3 filed December 15, 2023. IPL's press release announcing pricing states the debentures will be due September 30, 2031, and that net proceeds are intended to reduce outstanding capital under its receivables purchase and sale program, reduce outstanding commercial paper, and/or fund general corporate purposes. This filing is primarily a procedural 8-K that files the underwriting agreement, officer's certificate, legal opinions, and pricing press release as exhibits to the registration statement. For investors, the filing is a routine debt financing by a regulated utility subsidiary, with the key terms being the $500 million size, the 5.100% coupon, the 2031 maturity, and a stated use of proceeds aimed at reducing short-term funding obligations and general corporate needs.

Aug 21, 2026 8-K

Alliant Energy 8-K Report, Financial Results (Jul 31, 2026)

Alliant Energy Corporation (Nasdaq: LNT) furnished an 8-K on July 30, 2026 under Item 2.02 reporting results for the three and six months ended June 30, 2026, with the earnings press release filed as Exhibit 99.1. The combined filing is made by Alliant Energy Corporation, Interstate Power and Light Company, and Wisconsin Power and Light Company. Second-quarter GAAP EPS was $0.65 versus $0.68 in the year-earlier quarter, and net income attributable to common shareowners was $170 million versus $174 million. For the six months, GAAP EPS was $1.52 versus $1.50, while non-GAAP EPS was $1.47 after excluding a $0.05 per share benefit from the remeasurement of deferred tax assets tied to state income tax apportionment. Management reaffirmed 2026 ongoing EPS guidance of $3.36 to $3.46 per diluted share and said earnings are currently trending in the upper half of that range. CEO Lisa Barton cited three data centers making significant construction progress and meaningful progress on energy resource investments, which the company says positions it to accelerate earnings growth. The release states the company expects 60% load growth by 2031 and that large customer load is expected to materialize as forecasted in 2026. Quarter drivers included higher revenue requirements from rate base growth at IPL and WPL ($0.09 per share each), higher equity earnings from corporate venture investments, and higher temperature-normalized retail sales. Offsets included higher other operation and maintenance expense, higher financing and depreciation expenses, and unfavorable temperature impacts, which the filing estimates reduced retail electric and gas sales by $0.03 per share in the quarter. Cash and cash equivalents fell to $25 million at June 30, 2026 from $556 million at December 31, 2025, and long-term debt payments of $1,075 million were made in the first half.

Jul 31, 2026 8-K

Alliant Energy 8-K Report, Shareholder Vote Results (May 21, 2026)

Alliant Energy Corporation's 8-K reports the final results of its annual meeting of shareowners held on May 20, 2026. Shareowners elected all four director nominees (Patrick Allen, Manu Asthana, Ignacio Cortina and Michael Garcia) to terms ending in 2029. Asthana received the strongest support, with 204,157,674 votes for against 1,248,759 against, while Garcia drew the most opposition, with 27,812,589 votes against and 177,498,853 for. Shareowners also approved, on an advisory and non-binding basis, the compensation of the company's named executive officers, with 196,043,476 votes for, 8,748,646 against and 1,042,626 abstaining. In addition, shareowners ratified the appointment of Deloitte & Touche LLP as the independent registered public accounting firm for 2026, with 221,486,729 votes for, 7,841,355 against and 473,451 abstaining. The filing reports voting outcomes only and contains no financial results, guidance, or transactions. For investors, the meeting confirms board continuity and shareowner endorsement of executive pay and the auditor, though the vote against Garcia is the most notable dissent in the filing.

May 21, 2026 8-K

Material AgreementsExhibits & Filings

Alliant Energy 8-K Report, Financial Results (May 1, 2026)

Alliant Energy Corporation furnished a press release (Exhibit 99.1) dated April 30, 2026, announcing unaudited first-quarter 2026 results. GAAP earnings per diluted share were $0.87, up from $0.83 in the first quarter of 2025, and GAAP net income attributable to common shareowners was $224 million, compared with $213 million. Ongoing (non-GAAP) EPS was $0.82, versus $0.83 a year earlier. The non-GAAP adjustment removes a $0.05 per share ($12 million) benefit from a remeasurement of deferred tax assets tied to estimated state income tax apportionment. The company said this quarter's ongoing EPS represented approximately 25% of the midpoint of its 2026 ongoing EPS guidance, and it reaffirmed that guidance of $3.36 to $3.46 per share. The main drivers cited were higher revenue requirements from increasing rate base at IPL ($0.05 per share) and WPL ($0.10 per share), and higher allowance for funds used during construction ($30 million, compared with $18 million). These were offset by higher financing and depreciation expense tied to capital investment, and higher other operation and maintenance expense from distribution and generation costs, including planned maintenance. Total revenues rose to $1,184 million from $1,128 million, while operating income declined to $249 million from $257 million and interest expense rose to $142 million from $119 million. Weather reduced retail electric and gas sales, which the company estimated at $0.04 and $0.03 per share in 2026 and 2025, respectively. Data center growth was the headline commercial development. Alliant signed an electric service agreement for approximately 370 MW of contracted demand in Iowa, bringing total contracted data center demand to approximately 3.4 GW across five executed agreements. The filing notes that a data center customer that had signed with WPL in the third quarter of 2025 chose an IPL location in the first quarter of 2026, so that agreement was terminated and renegotiated with IPL.

May 1, 2026 8-K

Alliant Energy 8-K Report, Material Agreement (Mar 19, 2026)

On March 19, 2026, Alliant Energy Corporation entered into a distribution agreement under which it may sell, from time to time, shares of its common stock with an aggregate offering price of up to $1.0 billion through a group of sales agents. Sales may be made as ordinary brokers' transactions on the Nasdaq Global Select Market at market prices, in block transactions, or as otherwise agreed. The company may also enter into forward confirmations with forward purchasers, who would borrow and sell shares to hedge those confirmations, with the company receiving proceeds only upon future physical settlement. The company may also sell shares to an agent as principal under a separate terms agreement. The company intends to use net proceeds, after agent commissions and offering expenses, for general corporate purposes, which may include repayment, refinancing, repurchase or redemption of debt, working capital, construction and acquisition expenditures, and investments. The company will not initially receive proceeds from shares sold by an agent acting as forward seller. The shares are being issued under a Form S-3 registration statement (No. 333-276062) and a prospectus supplement dated March 19, 2026. Several agents and forward purchasers, or their affiliates, are lenders under the company's revolving credit facility, and the agents and their affiliates have provided and may in the future provide other financial and non-financial services for customary fees. The filing attaches the distribution agreement as Exhibit 1.1 and a legal opinion from Perkins Coie LLP as Exhibit 5.1.

Mar 19, 2026 8-K

Material AgreementsFinancial EventsExhibits & Filings

Alliant Energy 8-K Report, Material Agreement (Mar 4, 2026)

On March 2, 2026, Alliant Energy Corporation entered into a term loan credit agreement with U.S. Bank National Association as Administrative Agent and a group of lenders. The agreement provides for a $400 million term loan facility, plus an incremental term loan facility of up to $100 million for which no lender has any obligation to provide funding. Borrowings may be used for general corporate purposes, including working capital, interim funding of capital expenditures, and refinancing of other indebtedness. The facility matures on March 1, 2027. The credit agreement includes a maximum debt-to-capital ratio of 65% on a consolidated basis, a negative pledge restricting liens on company and subsidiary property subject to specified exceptions (including liens securing obligations up to 10% of consolidated tangible assets and additional non-recourse debt up to $100 million outstanding at any one time), and customary events of default. A cross-default provision applies if the company or certain subsidiaries default on debt (other than nonrecourse debt) totaling $100 million or more, and obligations become immediately due upon an order for relief under bankruptcy laws. The full terms are set out in the credit agreement, filed as Exhibit 10.1, which the filing incorporates by reference.

Mar 4, 2026 8-K

Alliant Energy 8-K Report, Financial Results (Feb 20, 2026)

Alliant Energy Corporation reported fourth-quarter and full-year 2025 results in a press release furnished as Exhibit 99.1 to this combined Form 8-K, filed jointly with Interstate Power and Light Company and Wisconsin Power and Light Company. GAAP diluted EPS was $3.14 for 2025, up from $2.69 in 2024. Ongoing (non-GAAP) EPS was $3.22, compared with $3.04 in 2024, which the company describes as 6% growth. Fourth-quarter GAAP EPS was $0.55 versus $0.58, and fourth-quarter ongoing EPS was $0.60 versus $0.70. Ongoing 2025 results exclude a $0.05 per share asset valuation charge for the non-utility business and a $0.03 per share charge from remeasuring deferred tax assets for higher estimated state income tax apportionment. The company cited higher revenue requirements from rate base growth, partly offset by higher other operation and maintenance expenses and higher depreciation and financing costs. The company affirmed its 2026 ongoing EPS guidance of $3.36 to $3.46 and reiterated a track record of compound annual earnings growth of more than 6%. Management said it renegotiated an electric service agreement with QTS based on a new project location. The release also updated projected capital expenditures for 2026 through 2029 to $3,130 million, $3,580 million, $3,625 million and $3,065 million, respectively, with renewables and energy storage, gas projects and electric distribution systems among the main categories. For 2025, the filing reports total revenues of $4,362 million (versus $3,981 million), net income attributable to common shareowners of $810 million (versus $690 million), and net cash flows from operating activities of $1,169 million. Long-term debt, net, rose to $10,954 million from $8,677 million at year-end 2024. The quarterly common dividend rate was increased to $0.5075 per share from $0.48.

Feb 20, 2026 8-K

Alliant Energy 8-K Report, Executive Changes (Jan 8, 2026)

Alliant Energy Corporation, together with its subsidiaries Interstate Power and Light Company and Wisconsin Power and Light Company, filed this Form 8-K under Item 5.02 to report a board change. On January 5, 2026, the Boards of Directors of all three registrants increased the number of directors to 11 and appointed Manu Asthana as a member of the Boards, effective February 23, 2026. Mr. Asthana, 52, was President and Chief Executive Officer of PJM Interconnection from 2020 to 2025. The filing describes PJM as overseeing the largest power grid in North America and one of the largest electricity markets in the world, serving 67 million people in 13 states and the District of Columbia. Before that, he held roles of increasing importance with accountabilities related to financial performance, risk, and operations at public and private utility companies. He will stand for election at the 2026 Annual Meeting of Shareowners as a nominee to serve until the 2029 Annual Meeting, alongside three directors whose terms also expire in 2026. Effective February 23, 2026, Mr. Asthana will serve on the Audit Committee and the Operations Committee of each Board. He will receive non-employee director compensation under the practices described in the company's April 1, 2025 Definitive Proxy Statement, except that the annual retainer for 2026 Board service on all Boards will be $300,000.

Jan 8, 2026 8-K

Alliant Energy 8-K Report, Executive Changes (Dec 16, 2025)

Alliant Energy Corporation, Interstate Power and Light Company, and Wisconsin Power and Light Company jointly filed this Form 8-K reporting leadership changes at the utility group under Item 5.02. David A. de Leon, President of Wisconsin Power and Light Company (WPL) and Senior Vice President of Alliant Energy Corporation and Interstate Power and Light Company (IPL), informed the Company on December 10, 2025 that he intends to retire from all his positions after 39 years of service. Effective January 5, 2026, he will continue as Senior Vice President of Alliant Energy, IPL and WPL until his retirement on or about July 1, 2026. On December 10, 2025, the Board of Directors of WPL, a wholly-owned subsidiary of Alliant Energy, appointed Rebecca Cameron Valcq as President of WPL effective January 5, 2026. She will also serve as Vice President of Alliant Energy and IPL effective the same date. Ms. Valcq, 50, has been Assistant Vice President of the Company since 2024. From 2019 to 2024 she chaired the Public Service Commission of Wisconsin, overseeing regulation of the state's more than 1,000 water, electric and gas utilities, and she also led the State of Wisconsin's Energy Office, Broadband Office and Office of Energy Innovation. Before that she practiced energy, environmental and regulatory law as a law firm partner and served as in-house counsel at a utility. For investors, the filing is a management succession update rather than a financial disclosure. It signals a planned transition at WPL, with a regulatory-experienced executive taking the top role and the outgoing executive remaining in a senior role through mid-2026.

Dec 16, 2025 8-K

Alliant Energy 8-K Report, Corporate Update (Dec 5, 2025)

Wisconsin Power and Light Company (WPL), a subsidiary of Alliant Energy Corporation (NASDAQ: LNT), entered into an Underwriting Agreement dated December 2, 2025 with Mizuho Securities USA LLC, Wells Fargo Securities, LLC, BofA Securities, Inc. and MUFG Securities Americas Inc., as representatives of the underwriters, to sell $300,000,000 aggregate principal amount of its 5.700% Debentures due 2055 in a public offering. The Offering is expected to close on December 5, 2025, subject to standard closing conditions. The Debentures are being issued under a 1997 Indenture with U.S. Bank Trust Company, National Association, as successor trustee, and are registered under an automatic shelf registration statement on Form S-3 filed December 15, 2023. The company priced the offering on December 2, 2025, and its press release states the debentures will be due December 15, 2055. WPL intends to use the net proceeds to reduce its outstanding commercial paper and for general corporate purposes. This 8-K is filed chiefly to file exhibits to the registration statement, including the Underwriting Agreement, the Officers' Certificate, and a Perkins Coie LLP legality opinion dated December 5, 2025. For investors, the filing is a debt financing event that refinances short-term commercial paper with long-term fixed-rate debt at the subsidiary level.

Dec 5, 2025 8-K

Alliant Energy 8-K Report, Financial Results (Nov 7, 2025)

Alliant Energy Corporation furnished a press release (Exhibit 99.1) reporting unaudited third-quarter 2025 results. GAAP EPS was $1.09 for the quarter, compared with $1.15 in the same quarter of 2024, and ongoing (non-GAAP) EPS was $1.12 versus $1.15. For the first nine months of 2025, GAAP EPS was $2.59, up 23.3% from $2.10, and ongoing EPS was $2.62, up 12.4% from $2.33. The company narrowed its 2025 ongoing EPS guidance to $3.17 to $3.23 (previously $3.15 to $3.25) and said full-year results are trending toward the upper half of that range. The third-quarter ongoing figure excludes an $8 million, or $0.03 per share, state income tax apportionment charge at the parent level. The company issued 2026 ongoing EPS guidance of $3.36 to $3.46, which it describes as 6.6% growth over 2025 at the midpoint. It also raised its 2026 annual common stock dividend target to $2.14 per share from $2.03. The growth outlook is supported by data center demand: IPL and WPL now have 3 GW of contracted data center demand, including a recently executed 900 MW electric service agreement for the QTS Madison site, and the company expects peak energy demand to grow 50% by 2030. To serve that demand, Alliant raised its 2025 through 2029 capital expenditure forecast by 17% to $13.4 billion. Projected total capital expenditures are $2,470 million for 2025, $3,045 million for 2026, $3,665 million for 2027, $3,795 million for 2028 and $2,905 million for 2029. Investors should weigh the earnings and dividend targets against the scale of this spending and the forward-looking risks the filing lists, including rate recovery, construction timing and cost, and regulatory approval for large-load customers.

Nov 7, 2025 8-K

Alliant Energy 8-K Report, Corporate Update (Sep 26, 2025)

Alliant Energy Corporation (NASDAQ: LNT) priced a public offering of $725 million aggregate principal amount of its 5.750% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2056, entering into an Underwriting Agreement on September 23, 2025 with BofA Securities, Inc., MUFG Securities Americas Inc., Barclays Capital Inc., Goldman Sachs & Co. LLC, and J.P. Morgan Securities LLC, as representatives of the underwriters. The notes are issued under an Indenture and First Supplemental Indenture, each dated September 26, 2025, with The Bank of New York Mellon Trust Company, N.A., as trustee, and are registered under an automatic shelf registration statement on Form S-3 filed December 15, 2023 and amended September 22, 2025. The notes are due April 1, 2056. According to the accompanying press release, Alliant Energy intends to use the net proceeds to reduce outstanding commercial paper, retire long-term debt and/or for general corporate purposes. The closing is expected on September 26, 2025, subject to customary closing conditions. Mizuho Securities USA LLC and Wells Fargo Securities, LLC are named as joint book-running managers in the press release. This Form 8-K was filed to file the underwriting agreement, indenture, supplemental indenture, legal and tax opinions from Perkins Coie LLP, and the pricing press release as exhibits to the registration statement.

Sep 26, 2025 8-K

Alliant Energy 8-K Report, Corporate Update (Sep 11, 2025)

On September 8, 2025, Interstate Power and Light Company ("IPL"), a subsidiary of Alliant Energy Corporation, entered into an Underwriting Agreement with KeyBanc Capital Markets Inc., PNC Capital Markets LLC, TD Securities (USA) LLC, and U.S. Bancorp Investments, Inc., as representatives of the underwriters, to sell $300 million aggregate principal amount of its 5.600% Senior Debentures due 2055 in a public offering. The Debentures are issued under a 2003 Indenture with The Bank of New York Mellon Trust Company, N.A., as successor trustee, and are registered under an automatic shelf registration statement on Form S-3 filed December 15, 2023. The offering is expected to close on September 11, 2025, subject to customary closing conditions. IPL's press release dated September 8, 2025 states that the net proceeds are intended to reduce outstanding capital under its receivables purchase and sale program, reduce outstanding commercial paper, and/or fund general corporate purposes. The debentures mature on October 1, 2055. The filing is made principally to file exhibits to the registration statement, including the Underwriting Agreement, the Officer's Certificate, and legal opinions from Perkins Coie LLP and Simmons Perrine Moyer Bergman PLC. For investors, this filing documents a long-dated, fixed-rate debt issuance by a regulated utility subsidiary. The filing does not disclose any financial results, earnings impact, or changes to Alliant Energy's operations or guidance.

Sep 11, 2025 8-K

Alliant Energy 8-K Report, Financial Results (Aug 8, 2025)

Alliant Energy Corporation (NASDAQ: LNT) furnished a Form 8-K dated August 7, 2025, under Item 2.02 (Results of Operations and Financial Condition), attaching a press release announcing financial results for the three and six months ended June 30, 2025. The filing is a combined report also filed by Interstate Power and Light Company and Wisconsin Power and Light Company. For the second quarter, GAAP earnings per share were $0.68 versus $0.34 in the second quarter of 2024, and net income attributable to Alliant Energy common shareowners was $174 million versus $87 million. The company's non-GAAP EPS for Q2 2024 was $0.57, and no non-GAAP adjustments were made in Q2 2025. Management attributed the year-over-year improvement mainly to 2024 non-GAAP charges not recurring, higher revenue requirements from capital investments, and estimated temperature impacts, partly offset by higher depreciation and financing expenses. Non-utility and Parent results were a loss of $0.10 per share, down $0.07 from the prior year, driven by lower equity income from corporate venture investments, higher financing expense and timing of income taxes. For the six months ended June 30, 2025, GAAP EPS was $1.50 diluted versus $0.95 in 2024, and net income was $387 million versus $245 million. Operating revenues were $2,088 million versus $1,925 million. Balance sheet items reported at June 30, 2025 include total assets of $23,750 million, long-term debt of $9,642 million (excluding current maturities of $1,373 million), and common equity of $7,145 million, with book value per share of $27.80. Cash from operating activities for the six months was $492 million, and construction and acquisition expenditures for the utility business were $976 million. The company reaffirmed its 2025 consolidated ongoing EPS guidance of $3.15 to $3.25 per share, with assumptions including normal temperatures, execution of capital expenditure plans and the ability of IPL and WPL to earn their authorized returns. The guidance excludes material non-cash valuation adjustments, regulatory-related charges and other listed items. A conference call to discuss the results was scheduled for August 8, 2025 at 9 a.m. Central time.

Aug 8, 2025 8-K

Alliant Energy 8-K Report, Shareholder Vote Results (May 20, 2025)

Alliant Energy Corporation filed this Form 8-K under Item 5.07 to report the final voting results from its annual meeting of shareowners held on May 16, 2025. Shareowners elected three directors, N. Joy Falotico, Thomas F. O'Toole, and Christie Raymond, each for a term ending in 2028. Falotico received 198,036,700 votes for and 2,815,779 against, O'Toole received 176,235,164 for and 24,616,836 against, and Raymond received 196,991,517 for and 3,866,347 against. Shareowners also approved, on an advisory and non-binding basis, the compensation of the named executive officers, with 193,099,366 votes for and 7,164,262 against. They ratified the appointment of Deloitte & Touche LLP as the independent registered public accounting firm for 2025, with 219,961,821 votes for and 5,996,811 against. A shareowner proposal requesting third-party evaluation of greenhouse gas emissions reduction targets was rejected, with 25,112,648 votes for and 173,867,408 against. The filing reports 25,154,313 broker non-votes on the director election, the executive compensation proposal, and the greenhouse gas proposal.

May 20, 2025 8-K

Material AgreementsFinancial EventsSecurities & Listing+2

Alliant Energy 8-K Report, Corporate Update (May 19, 2025)

Interstate Power and Light Company (IPL), a wholly owned subsidiary of Alliant Energy Corporation (NASDAQ: LNT), filed this Form 8-K on May 19, 2025 to report the public offering of $600 million aggregate principal amount of 5.600% Senior Debentures due 2035. The underwriting agreement was entered into on May 13, 2025 with BofA Securities, Inc., Mizuho Securities USA LLC, MUFG Securities Americas Inc., and Wells Fargo Securities, LLC as representatives of the underwriters. The offering was expected to close on May 19, 2025, subject to standard closing conditions. The debentures are being issued under an existing 2003 indenture with The Bank of New York Mellon Trust Company, N.A., as successor trustee, and are registered under an automatic shelf registration statement on Form S-3. According to the accompanying press release, IPL intends to use the net proceeds to retire its $50 million 5.50% senior debentures maturing July 15, 2025 and its $250 million 3.40% senior debentures maturing August 15, 2025, each at or prior to maturity. Proceeds may also be used to reduce outstanding capital under its receivables purchase and sale program, to reduce outstanding commercial paper, and/or for general corporate purposes. The debentures are due June 29, 2035. The filing is primarily administrative in nature: it files the underwriting agreement, officer's certificate, legal opinions from Perkins Coie LLP and Simmons Perrine Moyer Bergman PLC, and a pricing press release as exhibits to the existing shelf registration statement. For investors, the key item is IPL's new $600 million of long-term debt and its plan to refinance near-term maturities and reduce short-term borrowings.

May 19, 2025 8-K

Alliant Energy 8-K Report, Material Agreement (May 15, 2025)

On May 15, 2025, Alliant Energy Corporation completed the private offering of $575 million aggregate principal amount of 3.250% Convertible Senior Notes due 2028, including the full exercise of the $75 million option granted to the initial purchasers. The notes are senior unsecured obligations that pay interest semiannually on May 30 and November 30, beginning November 30, 2025, and mature on May 30, 2028, unless earlier converted or repurchased. The Company may not redeem the notes before maturity. Under the Indenture with The Bank of New York Mellon Trust Company, N.A., as trustee, the notes are structurally junior to all liabilities of the Company's subsidiaries and effectively junior to any secured indebtedness. Conversions may be settled in cash up to the principal amount, with the remainder settled in cash, common stock, or a combination at the Company's election. The initial conversion rate is 13.1773 shares per $1,000 principal amount, equivalent to an initial conversion price of approximately $75.89 per share, a premium of approximately 27.5% over the May 12, 2025 closing price on Nasdaq. Holders may convert only under certain conditions before March 1, 2028, and freely thereafter until the business day before maturity. The maximum number of shares issuable on conversion, including any make-whole adjustment, is 9,660,575. Per the May 12, 2025 pricing press release, the expected net proceeds were approximately $493.0 million, or $567.0 million if the option is fully exercised, and the Company intends to use them to repay or refinance debt, reduce outstanding commercial paper, or for general corporate purposes. Investors should note that the notes were sold in a Rule 144A private placement, so neither the notes nor the underlying shares are registered under the Securities Act.

May 15, 2025 8-K

Material AgreementsExhibits & Filings

Alliant Energy 8-K Report, Material Agreement (May 9, 2025)

On May 9, 2025, Alliant Energy Corporation entered into a distribution agreement with a group of agents and forward purchasers under which the company may sell shares of its common stock, par value $0.01 per share, with an aggregate offering price of up to $1,300,000,000. Sales may be made through ordinary brokers' transactions on the Nasdaq Global Select Market at market prices, in block transactions, or as otherwise agreed. The company may also enter into forward confirmations with the forward purchasers, who would borrow and sell shares to hedge those confirmations, and may sell shares to an agent as principal under a separate terms agreement. The company states it intends to use net proceeds, after agents' commissions and offering expenses, for general corporate purposes, which may include repayment, refinancing, repurchase or redemption of debt, working capital, construction and acquisition expenditures, and investments. It will not initially receive proceeds from borrowed shares sold by an agent acting as forward seller, and expects to receive proceeds upon future physical settlement of any forward confirmation on dates it specifies, on or before the relevant maturity date. The shares are being issued under the company's Form S-3 registration statement (Registration No. 333-276062) and a prospectus supplement dated May 9, 2025. The filing also discloses that affiliates of several agents are lenders under the company's revolving credit facility. The filing lists Exhibit 1.1 (the Distribution Agreement) and Exhibit 5.1 (a legal opinion from Perkins Coie LLP).

May 9, 2025 8-K

Alliant Energy 8-K Report, Financial Results (May 9, 2025)

Alliant Energy Corporation furnished a press release (Exhibit 99.1) dated May 8, 2025 announcing unaudited first quarter 2025 results for the three months ended March 31, 2025. GAAP earnings per share were $0.83 for 2025, compared to $0.62 in 2024, with consolidated net income attributable to common shareowners of $213 million versus $158 million. The Utilities and Corporate Services segment contributed $0.87 per share, up $0.25 from the prior year, driven mainly by higher revenue requirements from capital investments, estimated temperature impacts on sales, and timing of income tax expense. The Non-utility and Parent segment reported $(0.08) per share, primarily reflecting higher financing expenses and timing of income tax expense. Management noted the quarter was ahead of plan despite warmer-than-normal temperatures. The company reaffirmed its 2025 consolidated ongoing EPS guidance of $3.15 to $3.25 per share, assuming normal temperatures, a stable economy, execution of capital plans and cost controls, and a consolidated effective tax rate of (28%). The release states that the company has incorporated additional energy resources into its capital expenditure and financing plans to serve approximately 2.1 gigawatts of contracted peak data center demand. The updated projected capital expenditures for 2025 through 2028 total $11.5 billion in aggregate, with annual totals of $2,510 million in 2025, $2,755 million in 2026, $3,205 million in 2027, and $3,040 million in 2028. Renewables and energy storage and gas generation projects make up the largest components of the plan. Balance sheet figures show total assets of $22,851 million at March 31, 2025, and long-term debt of $8,580 million (excluding current maturities of $1,371 million).

May 9, 2025 8-K

Material AgreementsFinancial EventsExhibits & Filings

Alliant Energy 8-K Report, Executive Changes (Mar 10, 2025)

Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company filed this Current Report under Item 5.02, on departures and appointments of directors and officers. On March 7, 2025, John O. Larsen informed the Boards of the three companies that he plans to retire as Chairman of the Board and as a member of the Boards when his term expires after the 2025 Annual Meeting of Shareowners. On the same date, the Boards designated Patrick E. Allen as Board Chair of the Companies, effective after the 2025 Annual Meeting of Shareowners. Mr. Allen has served on the Boards since 2011. The filing reports only this leadership transition and does not state any other terms, compensation changes or financial results.

Mar 10, 2025 8-K

Alliant Energy 8-K Report, Material Agreement (Mar 3, 2025)

On March 3, 2025, Alliant Energy Finance, LLC (AEF), a wholly-owned subsidiary of Alliant Energy Corporation, entered into a one-year second amended and restated term loan credit agreement with U.S. Bank National Association, as administrative agent, and the several lenders party thereto. The initial principal amount available is $300 million, maturing March 2, 2026, with an incremental term loan facility of up to $100 million, though no lender is obligated to provide it. Alliant Energy guaranteed AEF's obligations under the agreement. Proceeds will be used to refinance existing AEF indebtedness and for general corporate purposes. The agreement amends and restates the existing term loan credit agreement. The Credit Agreement includes several covenants that investors should note. Alliant Energy must maintain a consolidated debt-to-capital ratio of not greater than 65%. The agreement restricts liens on property of AEF, Alliant Energy and its subsidiaries, subject to exceptions such as liens securing obligations of up to 10% of consolidated assets and up to $100 million of non-recourse debt at each of Interstate Power and Light Company and Wisconsin Power and Light Company, plus $100 million at non-utility subsidiaries. It also requires that asset sale proceeds above 25% of consolidated assets, with certain exclusions, be used to reduce certain debt commitments during the term. The agreement contains customary events of default, including a cross-default triggered by a default on debt (excluding non-recourse debt) of $100 million or more by Alliant Energy or its domestic subsidiaries. Upon an uncured event of default, lenders may accelerate outstanding obligations, and a bankruptcy order for relief against AEF or Alliant Energy would make obligations immediately due. The full terms are described in Exhibit 10.1, the Credit Agreement, which is incorporated by reference.

Mar 3, 2025 8-K

Alliant Energy 8-K Report, Financial Results (Feb 21, 2025)

Alliant Energy Corporation (Nasdaq: LNT) reported fourth-quarter and full-year 2024 results on February 20, 2025, as furnished in Exhibit 99.1 press release. GAAP earnings per share were $2.69 for 2024 compared to $2.78 in 2023, while ongoing or non-GAAP EPS was $3.04 for 2024 versus $2.82 in 2023. GAAP net income attributable to common shareowners was $690 million in 2024 versus $703 million in 2023. The company affirmed its 2025 ongoing EPS guidance range of $3.15 to $3.25 per share. The gap between GAAP and non-GAAP results in 2024 reflects $0.35 per share of excluded items, including a $0.17 per share asset valuation charge for IPL's Lansing Generating Station following an Iowa Utilities Commission order, $0.08 per share of restructuring and voluntary separation charges, $0.06 per share of asset retirement obligation charges for IPL steam assets under the revised Coal Combustion Residuals Rule, and $0.04 per share of deferred tax asset adjustments from Iowa tax reform. Utilities and Corporate Services non-GAAP EPS rose to $3.12 from $2.86, while the company cited revenue requirements from capital investments, including $0.68 per share of benefit, as a key driver. Higher depreciation ($0.19 per share) and financing expense ($0.15 per share) partially offset these gains. Capital spending and debt levels increased during 2024. Utility business construction and acquisition expenditures were $2.05 billion, up from $1.73 billion, and long-term debt was $8.68 billion at year-end, up from $8.23 billion. The company stated it completed 1,500 megawatts of solar generation investments in 2024, in addition to existing 1,800 megawatts of wind resources. Its 2025 guidance assumes normal temperatures, a consolidated effective tax rate of (28%), and successful execution of renewable and energy storage project in-service dates.

Feb 21, 2025 8-K

Financial EventsExhibits & Filings

Alliant Energy 8-K Report, Executive Changes (Feb 11, 2025)

Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company filed this Form 8-K on February 11, 2025 to report two executive leadership changes, both approved by the Boards of Directors on February 7, 2025 and effective March 2, 2025. The filing is a personnel announcement under Item 5.02 and does not report financial results, guidance, or transaction details. Dylan Syse, age 39, was appointed Chief Accounting Officer and Controller of the three Companies. He has served as Assistant Controller since 2021, previously held Manager roles in accounting and reporting from 2018 to 2021, and has worked in various accounting roles since joining the Companies in 2013. His compensation will consist of a salary and participation in the standard short-term and long-term incentive plans. The filing states there are no other arrangements or understandings tied to his appointment and no family relationships with any director or executive officer. Benjamin Bilitz, the current Chief Accounting Officer and Controller, was appointed Treasurer of the Companies in the same action, also effective March 2, 2025. Because Bilitz is moving into the Treasurer role while Syse assumes the Chief Accounting Officer and Controller position, the change is an internal succession within the finance and accounting function.

Feb 11, 2025 8-K

Alliant Energy 8-K Report, Financial Obligation (Dec 18, 2024)

On December 18, 2024, Alliant Energy Corporation, Interstate Power and Light Company (IPL), and Wisconsin Power and Light Company (WPL) entered into a second amendment to their amended and restated five-year master credit agreement, originally dated December 17, 2021, with Wells Fargo Bank, National Association, as Administrative Agent, and the lenders party thereto. The filing reports this under Item 2.03, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement. The amendment extends the facility termination date from December 18, 2028 to December 18, 2029, renews each borrower's two one-year extension options, and increases aggregate lender commitments under the revolving credit facility from $1 billion to $1.3 billion. Sublimits rise for Alliant Energy from $450 million to $600 million, for IPL from $250 million to $300 million, and for WPL from $300 million to $400 million. The uncommitted accordion is increased from $300 million to $700 million. The borrowers' obligations under the Second Amendment are several and not joint, meaning no borrower is liable for another's conduct or acts as primary obligor, guarantor, or surety for another's obligations. The filing refers to the full amendment as Exhibit 4.1 for complete terms.

Dec 18, 2024 8-K

Alliant Energy 8-K Report, Financial Results (Nov 1, 2024)

Alliant Energy Corporation (NASDAQ: LNT) filed this combined Form 8-K on October 31, 2024, furnishing its press release (Exhibit 99.1) announcing third-quarter 2024 results. GAAP earnings per share were $1.15 for the third quarter of 2024, compared to $1.02 in the third quarter of 2023. Net income attributable to common shareowners was $295 million for the quarter, versus $259 million a year earlier. For the nine months ended September 30, 2024, GAAP EPS was $2.10 versus $2.31 in 2023, reflecting a $0.17 per share asset valuation charge tied to IPL's Lansing Generating Station and a $0.06 per share asset retirement obligation charge for IPL's steam assets. Non-GAAP EPS for the nine months was $2.33 compared to $2.34 in the prior year. The company narrowed its 2024 EPS guidance to $2.99 to $3.06, down from the previous range of $2.99 to $3.13 at the top end. Management said it expects to offset a majority of the negative 2024 temperature impacts on earnings. The company also introduced 2025 EPS guidance of $3.15 to $3.25 per share and raised its 2025 annual common stock dividend target to $2.03 per share from $1.92. The press release reiterates a long-term earnings growth range of 5% to 7%. Management also noted strong data center interest in its service territory and said it will provide an update along with an updated load forecast. The company forecasts capital expenditures of $11 billion in aggregate for 2025 through 2028, with total projected spending of $2,025 million in 2024, $2,205 million in 2025, $2,680 million in 2026, $3,020 million in 2027 and $2,960 million in 2028. The filing is a combined report for Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company.

Nov 1, 2024 8-K

Alliant Energy 8-K Report, Corporate Update (Sep 6, 2024)

Interstate Power and Light Company (IPL), a wholly owned subsidiary of Alliant Energy Corporation (NASDAQ: LNT), entered into an Underwriting Agreement on September 4, 2024 to sell two series of senior debentures in a public offering: $350 million of 4.950% Senior Debentures due 2034 and $300 million of 5.450% Senior Debentures due 2054. The securities are issued under an 2003 indenture with The Bank of New York Mellon Trust Company, N.A., as successor trustee, and are registered under an automatic shelf registration statement on Form S-3 that IPL filed on December 15, 2023. The offering was priced on September 5, 2024, and closing is expected on September 6, 2024, subject to customary closing conditions. IPL states that it intends to use the net proceeds to retire its $500 million aggregate principal amount of 3.25% senior debentures maturing on December 1, 2024, at or prior to maturity, and for general corporate purposes. For investors, the filing is primarily a financing event: it refinances a maturing debt issue and extends IPL's long-term debt maturities out to 2034 and 2054. The filing itself does not describe the company's operating or financial results. This Form 8-K was filed to add exhibits to IPL's registration statement, including the Underwriting Agreement, the Officer's Certificate establishing the debentures, and legal opinions from Perkins Coie LLP and Simmons Perrine Moyer Bergman PLC on the legality of the securities and on Iowa law matters. The filing also references a September 5, 2024 press release announcing the pricing.

Sep 6, 2024 8-K

Alliant Energy 8-K Report, Financial Results (Aug 2, 2024)

Alliant Energy Corporation (NASDAQ: LNT) reported second-quarter 2024 results in a press release furnished as Exhibit 99.1 to this Form 8-K, dated August 1, 2024. GAAP earnings per share for the three months ended June 30, 2024 were $0.34, compared with $0.64 in the same period of 2023. Non-GAAP EPS was $0.57, compared with $0.64. The filing attributes the decline mainly to a $60 million pre-tax non-cash asset valuation charge for IPL's Lansing Generating Station, tied to the proposed Iowa rate review settlement, and a $20 million pre-tax asset retirement obligation charge for IPL's steam assets, tied to the revised Coal Combustion Residuals Rule. Timing of income taxes, higher financing and depreciation expenses, and estimated temperature impacts also weighed on results, partly offset by $0.12 per share of higher revenue requirements from capital investments at WPL. For the six months ended June 30, 2024, GAAP EPS was $0.95 versus $1.28, and non-GAAP EPS was $1.18 versus $1.28. Second-quarter revenues were $894 million versus $912 million, and net income attributable to common shareowners was $87 million versus $160 million. Management stated that, excluding the timing of income taxes and temperature impacts, first-half 2024 ongoing results were in line with its expectations. Alliant reaffirmed its 2024 consolidated EPS guidance of $2.99 to $3.13. The guidance excludes the Lansing and steam asset charges, which the company quantified at $0.17 and $0.06 per share, respectively. Management pointed to the Iowa rate review settlement, with an Iowa Utilities Commission decision currently expected in the third quarter of 2024, and to data center opportunities as drivers of long-term growth. The company also reported that year-to-date temperature impacts reduced 2024 EPS by $0.10 per share relative to normal temperatures.

Aug 2, 2024 8-K

Alliant Energy 8-K Report, Temporary Suspension of Trading Under Employee Benefit Plans (Jul 26, 2024)

Alliant Energy Corporation filed this Form 8-K on July 26, 2024 under Item 5.04 to disclose a temporary suspension of trading under its employee benefit plan. The Company's 401(k) Savings Plan will enter a blackout period beginning August 30, 2024 at 3:00 p.m. (Central Time) and ending during the calendar week beginning September 22, 2024. During this window, Plan participants will be unable to change contribution rates or enroll, change how current or future contributions are invested, request investment exchanges, or request or obtain loans or distributions. The Company states the blackout is necessary for administrative reasons to implement a change in service provider, with recordkeeping and trustee services being transferred to Fidelity Workplace Services, LLC. The blackout also restricts the Company's directors and executive officers from trading Alliant Energy common stock, including options and derivatives, whether or not the shares are held in the Plan. The Company notes this restriction arises under the SEC's Regulation BTR, which is authorized by the Sarbanes-Oxley Act of 2002, and applies in addition to the Company's Trading in Company Securities Compliance Memo. The Company received notice of the impending blackout from the Plan administrator on July 22, 2024, as required by ERISA Section 101(i)(2)(E), and sent notice to directors and executive officers on July 26, 2024. The filing is administrative in nature and does not report any financial results, operating developments, or changes to the Company's business. Investors wanting the actual blackout dates or further information may contact Corporate Secretary Omar N. Chaudhary at 608-458-3186.

Jul 26, 2024 8-K

Material AgreementsFinancial EventsOther Events+1

Alliant Energy 8-K Report, Executive Changes (Jul 15, 2024)

Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company filed this Current Report under Item 5.02 (Departure of Directors or Certain Officers; Compensatory Arrangements). On July 10, 2024, John O. Larsen, Executive Chairman and Chairman of the Board of the three companies, informed the Board that he plans to retire from his executive position effective on or before January 1, 2025. Upon his executive retirement, the Board confirmed Mr. Larsen as non-employee Chairman of the Board of the Companies. He will receive compensation as a non-employee director under the practices described in Alliant Energy's Definitive Proxy Statement filed April 2, 2024, plus an additional supplemental annual cash retainer of $200,000 for his role as Board Chairman. For investors, the filing signals a planned transition from executive leadership to a non-employee chairmanship, with the executive retirement timing set as on or before January 1, 2025. The filing does not name a successor executive.

Jul 15, 2024 8-K

Financial Events

Alliant Energy 8-K Report, Material Impairment (Jun 24, 2024)

On June 20, 2024, Alliant Energy Corporation and its wholly-owned subsidiary Interstate Power and Light Company (IPL) concluded they will record a one-time charge for the three and six months ending June 30, 2024. The charge stems from a non-unanimous settlement agreement reached with the Office of Consumer Advocate and the Iowa Business Energy Coalition in IPL's retail electric rate review. The filing discloses this under Item 2.06, Material Impairment. Under the settlement, IPL concluded that it is no longer probable it will earn a return on the regulatory asset for its retired coal-fired Lansing Generating Station from retail customers once final rates are implemented later in 2024. The non-cash pre-tax charge is approximately $60 million, or approximately $45 million after tax, which equals approximately $0.17 per diluted share. Investors should note that the settlement agreement remains subject to approval by the Iowa Utilities Board.

Jun 24, 2024 8-K

Alliant Energy 8-K Report, Material Agreement (Jun 6, 2024)

Alliant Energy Finance, LLC ("AEF"), a wholly-owned subsidiary of Alliant Energy Corporation, issued $375 million aggregate principal amount of 5.400% Senior Notes due June 6, 2027 in a private offering under Rule 144A and Regulation S. The notes are senior unsecured obligations of AEF and are fully and unconditionally guaranteed by Alliant Energy on a senior unsecured basis. Interest is payable semi-annually on June 6 and December 6, beginning December 6, 2024. The notes were issued under an indenture dated June 6, 2024 with The Bank of New York Mellon Trust Company, N.A. as trustee, which includes covenants restricting liens and mergers or asset conveyances, along with customary events of default. AEF may redeem some or all of the notes before May 6, 2027 at the greater of par or a make-whole amount calculated at the treasury rate plus 15 basis points, plus accrued interest. The filing states that net proceeds are intended to reduce Alliant Energy's outstanding commercial paper and fund general corporate purposes. The pricing was announced in a June 3, 2024 press release, which is filed as Exhibit 99.1. For investors, the transaction is a debt financing that adds $375 million of senior unsecured notes guaranteed by the parent, with proceeds directed toward refinancing short-term commercial paper and general corporate needs. The filing does not describe any change to operations, earnings, or guidance.

Jun 6, 2024 8-K

Alliant Energy 8-K Report, Shareholder Vote Results (May 20, 2024)

Alliant Energy Corporation's Current Report on Form 8-K, filed May 20, 2024, reports the final voting results from its annual meeting of shareowners held on May 17, 2024. Shareowners elected six directors: Christie Raymond (term ending 2025), Ignacio Cortina (term ending 2026), and Lisa Barton, Stephanie Cox, Roger Newport and Carol Sanders (terms ending 2027). Each nominee received more for votes than against votes, with Carol Sanders receiving the largest number of against votes at 15,607,363. Shareowners also approved, on an advisory and non-binding basis, the compensation of the company's named executive officers, with 189,645,167 votes for, 8,498,044 against and 974,745 abstaining. The votes against and abstentions on this say-on-pay proposal were lower than the votes for it. The 25,109,598 broker non-votes were recorded for the director elections and the say-on-pay proposal. Shareowners ratified the appointment of Deloitte & Touche LLP as the independent registered public accounting firm for 2024, with 218,456,446 votes for, 5,337,649 against and 433,459 abstaining. The filing reports these results as final for each matter submitted at the meeting.

May 20, 2024 8-K

Alliant Energy 8-K Report, Financial Results (May 3, 2024)

Alliant Energy Corporation (Nasdaq: LNT) furnished this Form 8-K, a combined filing with Interstate Power and Light Company and Wisconsin Power and Light Company, on May 2, 2024 to report its unaudited results for the first quarter ended March 31, 2024. GAAP earnings per share were $0.62, compared with $0.65 in the first quarter of 2023. Consolidated net income attributable to common shareowners was $158 million, versus $163 million a year earlier. The company attributed the shortfall primarily to historically mild weather, which reduced retail electric and gas sales, along with higher financing and depreciation expenses, partially offset by higher revenue requirements from capital investments at Wisconsin Power and Light. Management reaffirmed 2024 consolidated EPS guidance of $2.99 to $3.13 per share. CEO Lisa Barton said results were in line with the company's expectations and highlighted the approaching completion of the final project in a 1.1 gigawatt solar investment in Wisconsin as a milestone in diversifying the energy mix. The guidance assumes normal temperatures, constructive and timely regulatory outcomes, and an assumed consolidated effective tax rate of (7%). Balance sheet and cash flow data show long-term debt, net, rising to $8,524 million at March 31, 2024 from $8,225 million at December 31, 2023, and net cash flows from operating activities of $307 million, compared with $188 million in the prior-year period. Investing activities used $353 million, and the company paid $123 million in common stock dividends. The filing also references a conference call on May 3, 2024 and a press release furnished as Exhibit 99.1.

May 3, 2024 8-K

Alliant Energy 8-K Report, Executive Changes (Mar 8, 2024)

Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company jointly filed this Form 8-K to report under Item 5.02 (Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers). On March 7, 2024, the Boards of Directors of all three registrants appointed Christie Raymond as a director, effective April 1, 2024. Ms. Raymond, 54, has served as Senior Executive Vice President and Chief Marketing Officer at Kohl's since August 2022, overseeing marketing and customer service organizations, including marketing strategy, brand and creative, media and personalization, credit and loyalty, customer insights and analytics, corporate communications, and philanthropic efforts. Before that, she held Executive Vice President roles at Kohl's from June 2020 to August 2022 and Senior Vice President, Media and Personalization, from October 2017 to June 2020. She previously spent most of her career at the Walt Disney Parks and Resorts in business strategy, marketing, consumer insights, analytics and personalization roles. Raymond will stand for election as a nominee at the Alliant Energy 2024 Annual Meeting of Shareowners, serving until the 2025 annual meeting. Effective April 1, 2024, she will join the Audit Committee and the Compensation and Personnel Committee of each Board, and she will receive non-employee director compensation under the practices described in the company's April 4, 2023 definitive proxy statement, as updated by Exhibit 10.14 to the Form 10-K filed February 16, 2024.

Mar 8, 2024 8-K

Material AgreementsFinancial EventsExhibits & Filings

Alliant Energy 8-K Report, Corporate Update (Mar 7, 2024)

On March 4, 2024, Wisconsin Power and Light Company (WPL), a subsidiary of Alliant Energy Corporation, entered into an underwriting agreement with BofA Securities, Inc., Mizuho Securities USA LLC, TD Securities (USA) LLC and Wells Fargo Securities, LLC, as representatives of the underwriters, to sell $300,000,000 aggregate principal amount of its 5.375% Debentures due 2034 in a public offering. The offering is expected to close on March 7, 2024, subject to standard closing conditions. The debentures are being issued under a 1997 indenture with U.S. Bank Trust Company, National Association, as successor trustee, and are registered under an automatic shelf registration statement on Form S-3 filed December 15, 2023. The filing is made to file exhibits to the registration statement: the underwriting agreement, the officers' certificate setting the debenture terms, and an opinion of Perkins Coie LLP dated March 7, 2024, on the legality of the debentures. A press release dated March 4, 2024, announces the pricing of the offering. Per the press release, the debentures will be due March 30, 2034, and an amount equal to or in excess of the net proceeds will be allocated or disbursed for the development and acquisition of solar electric generating units. The release describes the offering as a green bond offering. For investors, the filing is a routine debt financing by a regulated utility subsidiary, with the stated use of proceeds tied to solar generation.

Mar 7, 2024 8-K

Alliant Energy 8-K Report, Material Agreement (Mar 5, 2024)

On March 1, 2024, Alliant Energy Finance, LLC (AEF), a wholly-owned subsidiary of Alliant Energy Corporation, entered into a one-year amended and restated term loan credit agreement with U.S. Bank National Association, as administrative agent, and the several lenders party thereto. The initial principal amount available is $300 million, maturing March 3, 2025, with an incremental term loan facility of up to $100 million for which no lender has any obligation to provide funds. Alliant Energy guaranteed AEF's obligations under the facility, and advances will be used to refinance existing AEF indebtedness and for general corporate purposes. The agreement amends and restates the existing term loan credit agreement. The Credit Agreement includes several covenants that investors should note. Alliant Energy must maintain a consolidated debt-to-capital ratio of not greater than 65%. The agreement restricts liens on property of AEF, Alliant Energy, and its subsidiaries, subject to exceptions such as liens securing obligations of up to 10% of consolidated assets and non-recourse debt limits of $100 million each at Interstate Power and Light Company, Wisconsin Power and Light Company, and Alliant Energy's non-utility subsidiaries. It also requires that certain asset sale proceeds exceeding 25% of consolidated assets be used to reduce specified debt commitments during the term. The agreement contains customary events of default, including a cross-default triggered by a default on debt (other than non-recourse debt) of $100 million or more by Alliant Energy or its domestic subsidiaries. Upon an continuing event of default, lenders may accelerate outstanding obligations, and a bankruptcy order for relief with respect to AEF or Alliant Energy would make obligations immediately due and payable. The filing also reports the agreement under Item 2.03 as a direct financial obligation.

Mar 5, 2024 8-K

Alliant Energy 8-K Report, Financial Results (Feb 16, 2024)

Alliant Energy Corporation (Nasdaq: LNT) reported unaudited full-year 2023 results in a press release furnished as Exhibit 99.1 to this combined Form 8-K, filed jointly with Interstate Power and Light Company and Wisconsin Power and Light Company. GAAP earnings per share were $2.78 in 2023, compared with $2.73 in 2022. Temperature-normalized non-GAAP EPS was $2.88 in 2023 versus $2.73 in 2022, which the company describes as 5.5% growth. Net income attributable to common shareowners was $703 million in 2023 versus $686 million in 2022, and the company affirmed its 2024 EPS guidance range of $2.99 to $3.13 per share. The main drivers of the 2023 GAAP EPS change were revenue requirements and higher AFUDC from capital investments, which contributed $0.26 per share, and lower other operation and maintenance expenses at IPL and WPL, which contributed $0.07. These were offset mainly by higher financing expense of $0.21 per share, lower sales from net temperature impacts of $0.13, and higher depreciation expense of $0.07. The release notes that interest expense rose as long-term debt increased to fund capital expenditures, including the Wisconsin solar expansion program. Long-term debt, net, rose to $8.225 billion at year-end 2023 from $7.668 billion, and capital expenditures for the utility business were $1.731 billion in 2023. The 2024 guidance assumes normal temperatures, constructive regulatory outcomes, and a consolidated effective tax rate of (7%). The company also said it expects to complete approximately 1,500 megawatts of solar generation in 2024. The Non-utility and Parent segment posted a GAAP loss of $0.22 per share, mainly due to higher interest expense. The filing's text references an earnings conference call held on February 16, 2024.

Feb 16, 2024 8-K

Material AgreementsFinancial EventsOther Events+1

Alliant Energy 8-K Report, Executive Changes (Feb 13, 2024)

Alliant Energy Corporation, Interstate Power and Light Company, and Wisconsin Power and Light Company filed this Form 8-K on February 13, 2024 to report executive leadership changes under Item 5.02. The filing discloses no financial results, operating metrics, or transactions. Terry L. Kouba, President of Interstate Power and Light Company (IPL) and Senior Vice President of Alliant Energy Corporation, informed the Board on February 8, 2024 that he plans to retire effective May 1, 2024. On February 9, 2024, the Board of IPL, a wholly-owned subsidiary of Alliant Energy, appointed Mayuri N. Farlinger as IPL's President effective May 1, 2024. She will continue to serve as Vice President of Alliant Energy and Wisconsin Power and Light Company. Ms. Farlinger, 41, has been a Vice President of the Company since January 2022 and previously held roles including Director of Operations, Director of Revenue Management, and Manager of the Customer Support Center, Billing Integrity, along with positions across Finance, Audit, Regulatory, Account Management, Field Engineering, Customer Renewables, and Operations. The filing contains no compensation terms for either executive.

Feb 13, 2024 8-K

Alliant Energy 8-K Report, Material Agreement (Nov 13, 2023)

Alliant Energy Finance, LLC ("AEF"), a wholly-owned subsidiary of Alliant Energy Corporation, issued $300 million aggregate principal amount of 5.950% Senior Notes due March 30, 2029 on November 10, 2023. The notes were sold in a private offering to qualified institutional buyers under Rule 144A and to non-U.S. persons under Regulation S, and are fully and unconditionally guaranteed by Alliant Energy on a senior unsecured basis. The notes were issued under an indenture dated November 10, 2023 with The Bank of New York Mellon Trust Company, N.A. as trustee. Interest is payable semi-annually on March 30 and September 30, beginning March 30, 2024. Prior to February 28, 2029, AEF may redeem some or all of the notes at the greater of 100% of principal or a make-whole amount calculated using the treasury rate plus 25 basis points, plus accrued unpaid interest. The indenture contains customary covenants restricting liens and mergers or asset conveyances, along with customary events of default, which could lead to acceleration of the principal. The filing states that the net proceeds are intended to reduce Alliant Energy's outstanding commercial paper and for general corporate purposes. A press release dated November 7, 2023, announcing the pricing of the offering, is filed as Exhibit 99.1.

Nov 13, 2023 8-K

Alliant Energy 8-K Report, Financial Results (Nov 3, 2023)

Alliant Energy Corporation (Nasdaq: LNT) filed this combined Form 8-K on November 2, 2023, furnishing its press release announcing third quarter 2023 results (the press release is Exhibit 99.1). The filing is a joint report for Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company. Third-quarter GAAP earnings per share were $1.02 in 2023, compared to $0.90 in 2022, and non-GAAP EPS was $1.05 versus $0.93. For the nine months ended September 30, 2023, GAAP EPS was $2.31, flat with the prior year, and net income attributable to common shareowners was $582 million. Higher revenue requirements and AFUDC from Wisconsin Power and Light's capital investments drove the quarter's improvement, partly offset by higher interest expense. The company narrowed its 2023 consolidated EPS guidance to $2.85 - $2.93, from $2.82 - $2.96, and issued 2024 EPS guidance of $2.99 - $3.13. It reiterated a long-term earnings growth range of 5% to 7%. Management raised its 2024 annual common stock dividend target to $1.92 per share from $1.81, which the filing describes as a 6% increase. The company also updated its projected capital expenditures for 2023 through 2027, totaling $9 billion in aggregate for 2024 through 2027 as stated in the release. The 2023 total is $1,790 million and the 2024 total is $2,275 million. Results are unaudited, and the filing notes an estimated year-to-date temperature impact of a $0.02 per share loss in 2023.

Nov 3, 2023 8-K

Alliant Energy 8-K Report, Executive Changes (Oct 26, 2023)

Alliant Energy Corporation, together with Interstate Power and Light Company and Wisconsin Power and Light Company, filed this Form 8-K on October 26, 2023 to report a leadership succession. Alliant Energy announced that Lisa M. Barton, currently President and Chief Operating Officer of Alliant Energy and Chief Executive Officer of IPL and WPL since February 2023, will become President and Chief Executive Officer of Alliant Energy effective January 1, 2024. She will also continue as CEO of IPL and WPL and join the Boards of the Companies as of that date. John O. Larsen, who has been Board Chair and Chief Executive Officer of Alliant Energy since February 2023, will become Executive Chairman of the Companies effective January 1, 2024, remaining an employee and Board member. The filing states that no other changes were made to Mr. Larsen's compensation arrangements. The filing sets out new compensation terms for both executives effective January 1, 2024. Ms. Barton's base salary will be $1,075,000, with a 125% short-term incentive target and a 420% long-term incentive target for 2024 awards. Mr. Larsen's base salary will be $967,500, with a 120% short-term incentive target and a 400% long-term incentive target. Ms. Barton will also stand for election at the 2024 Annual Meeting of Shareowners and serve on the Equity Awards Committee.

Oct 26, 2023 8-K

Alliant Energy 8-K Report, Corporate Update (Sep 21, 2023)

Interstate Power and Light Company ("IPL"), a subsidiary of Alliant Energy Corporation, entered into an Underwriting Agreement dated September 18, 2023 with BofA Securities, Inc., Mizuho Securities USA LLC, MUFG Securities Americas Inc., U.S. Bancorp Investments, Inc., and Wells Fargo Securities, LLC, as representatives of the underwriters. Under the agreement, IPL agreed to sell $300 million aggregate principal amount of its 5.700% Senior Debentures due 2033 in a public offering. The offering is expected to close on September 21, 2023, subject to standard closing conditions. The Debentures are being issued under a 2003 indenture with The Bank of New York Mellon Trust Company, N.A., as successor trustee, and are registered under an automatic shelf registration statement on Form S-3 that IPL filed on December 15, 2020. The filing states that its purpose is to file exhibits to that registration statement. The press release announcing the pricing states that IPL intends to use the net proceeds to reduce outstanding capital under its receivables purchase and sale program, to reduce commercial paper classified as long-term debt, and/or for general corporate purposes. The filing also includes legal opinions from Perkins Coie LLP and Simmons Perrine Moyer Bergman PLC, both dated September 21, 2023, on the legality of the Debentures and on certain Iowa law matters. For investors, the filing is a debt financing by a utility subsidiary, with the stated uses of proceeds focused on refinancing short-term and receivables-related funding and general corporate needs.

Sep 21, 2023 8-K

Alliant Energy 8-K Report, Financial Results (Aug 4, 2023)

Alliant Energy Corporation reported second-quarter 2023 GAAP earnings of $0.64 per diluted share, compared with $0.63 in the second quarter of 2022, on net income of $160 million versus $159 million. Utilities and Corporate Services earned $0.65 per share, up from $0.61, driven by higher revenue requirements and AFUDC from Wisconsin Power and Light Company's (WPL's) capital investments and by WPL electric fuel-related costs, net of recoveries. These gains were partly offset by higher interest expense, and the Non-utility and Parent segment posted a $(0.04) per share loss, compared with $(0.01) a year earlier. Temperatures had minimal impact on retail sales in the quarter, after warmer-than-normal weather boosted results in the second quarter of 2022. For the six months ended June 30, 2023, GAAP EPS was $1.28 versus $1.40 in the prior-year period, and net income was $323 million versus $351 million. Consolidated operating revenues were $1,990 million compared with $2,012 million, and interest expense rose to $190 million from $152 million. Utility business construction and acquisition expenditures were $758 million for the six months, up from $550 million, and long-term debt, net, increased to $8,186 million from $7,668 million at year-end 2022. Management reaffirmed its 2023 consolidated EPS guidance of $2.82 to $2.96. The guidance assumes, among other things, that Interstate Power and Light Company and WPL earn their authorized rates of return, normal temperatures, execution of cost controls and capital and financing plans, and a consolidated effective tax rate of 2%. The company stated it cannot estimate the impact of specific items that could significantly affect 2023 EPS and provided no reconciliation of guidance to GAAP EPS.

Aug 4, 2023 8-K

Alliant Energy 8-K Report, Executive Changes (Jul 14, 2023)

Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company filed this Current Report on Form 8-K under Item 5.02, reporting changes to the Boards of Directors. The filing states that on July 12, 2023, the Boards appointed Ignacio A. Cortina as a director of all three registrants, effective July 14, 2023. Mr. Cortina, 51, has served as Executive Vice President, Chief Legal Officer and Secretary of Oshkosh Corporation since February 2023, and previously served as its Executive Vice President, General Counsel and Secretary from 2016 to 2023. He joined Oshkosh Corporation in 2003. Mr. Cortina will serve on the Compensation and Personnel Committee and the Operations Committee of each Board, and will receive non-employee director compensation as described in Alliant Energy's Definitive Proxy Statement filed April 4, 2023. He is expected to stand for election as a nominee at the 2024 Annual Meeting of Shareowners, to serve until the 2026 Annual Meeting. The filing also states that Susan Whiting, a Director, informed the Chair of the Boards on July 11, 2023 that she plans to retire from the Boards effective July 14, 2023. The filing contains no financial results or other financial metrics.

Jul 14, 2023 8-K

Alliant Energy 8-K Report, Shareholder Vote Results (May 25, 2023)

Alliant Energy Corporation ("AEC") held its annual meeting of shareowners on May 23, 2023, and this Item 5.07 report discloses the final voting results on the four matters put to shareowners. All four director nominees were elected: Stephanie L. Cox, for a term ending in 2024, and Patrick E. Allen, Michael D. Garcia and Susan D. Whiting, for terms ending in 2026. Each nominee received substantially more "For" votes than "Against" votes, with Patrick E. Allen receiving 173,063,970 For and 16,672,609 Against. Shareowners also approved, on an advisory and non-binding basis, the compensation of the named executive officers, with 181,184,866 votes For, 7,956,109 Against and 1,016,162 Abstaining. On the frequency of that advisory vote, the most votes (186,253,391) were cast for one year, and AEC stated that, in light of these results and other factors, it decided to hold annual advisory votes on named executive officer compensation until the next frequency vote, which it notes is required at least once every six years. Shareowners also ratified the appointment of Deloitte & Touche LLP as the independent registered public accounting firm for 2023, with 209,098,452 votes For, 5,731,229 Against and 652,561 Abstaining.

May 25, 2023 8-K

Alliant Energy 8-K Report, Financial Results (May 5, 2023)

Alliant Energy Corporation reported first quarter 2023 results in a combined Form 8-K filed May 5, 2023 (for the event dated May 4, 2023), furnishing a press release as Exhibit 99.1. GAAP earnings per share were $0.65 for the three months ended March 31, 2023, compared with $0.77 in the same period of 2022. Net income attributable to common shareowners was $163 million versus $192 million a year earlier. The company cited warmer than normal temperatures reducing retail electric and gas sales, higher interest expense, and timing of income tax expense as the primary drivers of the decline, partly offset by higher revenue requirements and AFUDC from Wisconsin Power and Light's capital investments. The company reaffirmed its 2023 EPS guidance range of $2.82 to $2.96, with assumptions that include normal temperatures, the ability of IPL and WPL to earn authorized rates of return, and a consolidated effective tax rate of 2%. Management highlighted that it is on track to place 840 MW of utility-scale solar in service by the first half of 2024. Total long-term debt rose during the quarter, from $7,668 million to $8,132 million (excluding current maturities), largely to fund capital expenditures including the Wisconsin solar expansion program. Cash flow data in the release show net cash flows from operating activities of $188 million in the first quarter of 2023, down from $251 million a year earlier, while utility construction expenditures increased to $417 million from $307 million. Common stock dividends were $113 million, and the quarterly dividend rate rose to $0.4525 per share from $0.4275.

May 5, 2023 8-K