Welcome to our dedicated page for Alliant Energy SEC filings (Ticker: LNT), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Alliant Energy Corporation (LNT) SEC filings page provides access to the company’s official regulatory documents as filed with the U.S. Securities and Exchange Commission. As a Wisconsin corporation and S&P 500 utility holding company, Alliant Energy files reports that cover its consolidated operations as well as those of its key subsidiaries, Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL). These filings include current reports on material events, registration statements for securities offerings and other disclosures related to its regulated utility and financing activities.
For Alliant Energy, Form 8-K filings are particularly important for tracking developments such as earnings announcements, leadership changes, debt and hybrid security offerings, and other significant corporate events. Recent 8-Ks describe financial results for specific quarters, underwriting agreements and indentures for long-dated debentures and junior subordinated notes, and changes in executive roles at WPL and within the broader organization.
Investors and analysts can also use SEC filings to understand how Alliant Energy funds its capital expenditure plans and manages its capital structure. Registration statements and related exhibits detail public offerings of securities by Alliant Energy, IPL and WPL, including the intended use of proceeds, key terms of the securities and associated legal opinions. These documents complement the company’s earnings releases by providing formal, regulator-reviewed descriptions of its financing transactions.
On Stock Titan, Alliant Energy filings are updated in near real time as they are posted to the EDGAR system. AI-powered tools summarize lengthy documents, highlight key sections and help explain the implications of complex items, such as the terms of new debt securities or the nature of material events disclosed in Form 8-K. Users can quickly locate filings related to LNT, IPL and WPL, review exhibits and track how regulatory disclosures align with the company’s stated strategy, capital plans and risk factors.
Alliant Energy Corporation is asking shareowners to vote at its virtual 2026 annual meeting on May 20, 2026, on electing four directors, approving executive pay on an advisory basis, and ratifying Deloitte & Touche LLP as auditor for 2026.
The proxy highlights a pay-for-performance design. 2025 GAAP EPS from continuing operations was $3.14, with adjusted EPS of $3.24, leading to a 130% payout of the annual incentive pool based on financial, customer, environmental and safety metrics. CEO Lisa Barton’s 2025 base salary was $1,139,500, with a long-term equity target equal to 460% of salary.
Long-term incentives are mostly performance-based shares tied to relative total shareholder return, net income growth, and renewable generation and storage build-out, plus time-vesting restricted stock units. The Board remains majority independent, uses majority voting in uncontested elections, and oversees risk through a formal enterprise risk management framework and specialized Board committees.
Alliant Energy Corp Schedule 13G/A amendment reports that The Vanguard Group holds 0 shares of Common Stock, representing 0% of the class. The filing explains an internal realignment effective January 12, 2026, that disaggregated certain Vanguard subsidiaries for reporting. The amendment is signed by Ashley Grim on 03/26/2026.
Alliant Energy Corporation entered into a new equity distribution agreement that allows it to sell, from time to time, shares of common stock with an aggregate offering price of up to $1,000,000,000. Sales may be made through multiple banks acting as agents on the Nasdaq Global Select Market or directly to an agent acting as principal.
The company may also use forward sale arrangements, where forward purchasers borrow and sell shares now and Alliant Energy receives cash later upon physical settlement of each forward confirmation. Net proceeds are intended for general corporate purposes, including debt repayment, working capital and construction or acquisition spending.
Alliant Energy Corporation has filed a prospectus supplement to offer up to $1,000,000,000 of common stock through an "at-the-market" distribution agreement running through December 31, 2029. Sales may occur through designated agents or via forward sale agreements with specified forward purchasers. The filing states proceeds will be received upon physical settlement of forward sales, while borrowed-share sales by forward sellers will not initially provide proceeds. The offering permits multiple sale methods, a 1.00% selling commission to agents, and various settlement options including physical, cash or net share settlement.
Alliant Energy Corp vice president Rebecca C. Valcq reported a routine tax-withholding transaction involving company stock. On February 19, 2026, 438 shares of Alliant Energy common stock were withheld by the company at $70.01 per share to cover tax obligations tied to the vesting and settlement of restricted stock units. The footnote clarifies this was not an open-market sale by Valcq. After this withholding, she directly held 2,335 shares of Alliant Energy common stock.
Alliant Energy Corp director Manu Asthana filed an initial ownership report showing holdings of common stock. The filing lists ownership of 1,000 shares of Alliant Energy common stock held directly. This Form 3 does not indicate any recent share purchases or sales, only current holdings.
Alliant Energy Corporation entered into a new term loan credit agreement providing a $400 million term loan facility, with an additional incremental term loan capacity of up to $100 million in lender discretion. The company can use the borrowings for general corporate purposes, including working capital, capital spending, and refinancing existing debt.
The credit facility matures on March 1, 2027 and includes a covenant requiring a consolidated debt-to-capital ratio not greater than 65%. It also limits liens on company and subsidiary assets, subject to defined exceptions, and includes customary events of default and a cross-default trigger tied to at least $100 million of other debt.
Alliant Energy President and CEO Lisa M. Barton reported equity compensation changes involving the company’s common stock. On February 19, 2026, she acquired 47,533 and 29,527 shares through grant/award acquisitions, both at a stated price of $0.00 per share.
The filing also shows a tax-withholding disposition of 28,594 shares at $70.01 per share to satisfy tax obligations. A related footnote explains that these awards are restricted stock units that convert into common stock on a one-to-one basis and vest on December 31, 2028.
Alliant Energy Corp vice president Rebecca C. Valcq received a grant of 1,004 restricted stock units (RSUs) of common stock as a non-cash award. The RSUs convert to common shares on a one-to-one basis when they vest on December 31, 2028. Following this grant, her directly owned common stock amount reported in this filing is 2,773 shares.