Every material Form 8-K Alliant Energy filed with the SEC in 2026, read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). Newest first; each brief links to its own page and to the filing on SEC.gov.
Alliant Energy reported third-quarter 2026 GAAP earnings per share of $1.52, up from $1.09 in the third quarter of 2025. The company also narrowed its full-year 2026 ongoing earnings guidance, initiated 2027 guidance, and increased its four-year capital expenditure forecast to $15.9 billion.
Q3 2026 GAAP EPS was $1.52 compared to $1.09 in Q3 2025.
2026 ongoing EPS guidance narrowed to $3.41 - $3.46 per share.
2027 EPS guidance set at $3.63 - $3.73 per share with a dividend target of $2.25 per share.
Capital expenditures for 2027 through 2030 increased to $15.9 billion.
On October 26, 2026, Wisconsin Power and Light and Interstate Power and Light, both subsidiaries of Alliant Energy, signed loan guarantee agreements with the U.S. Department of Energy and multi-advance term loan facilities through the Federal Financing Bank. The filing caps advances at $1,626,488,000 for WPL and $3,500,000,000 for IPL, to reimburse up to 80% of eligible project costs. The parent company is not a party to these loan documents, and each utility's borrowings are full recourse senior unsecured obligations of that utility.
WPL facility cap is $1,626,488,000; IPL facility cap is $3,500,000,000; both agreements dated October 26, 2026.
Advances reimburse up to 80% of eligible project costs; advances may be requested through September 15, 2033, subject to conditions.
Final maturity is May 15, 2056; each advance bears the U.S. Treasury rate plus 37.5 basis points.
Alliant Energy Corporation states it is not a party to, and has no direct obligations under, the loan documents.
Alliant Energy reported second-quarter 2026 GAAP earnings of $0.65 per diluted share, down from $0.68 a year earlier, with quarterly net income of $170 million versus $174 million. For the six months, GAAP EPS rose to $1.52 from $1.50, and the company reaffirmed its 2026 ongoing EPS guidance of $3.36 to $3.46, saying results are trending in the upper half of that range.
Q2 2026 GAAP EPS of $0.65 vs. $0.68 in Q2 2025; quarterly net income of $170 million vs. $174 million
Six-month GAAP EPS of $1.52 vs. $1.50; non-GAAP EPS of $1.47 excludes a $0.05 state income tax apportionment benefit
Q2 total revenues of $971 million vs. $961 million a year earlier
2026 ongoing EPS guidance reaffirmed at $3.36 to $3.46; earnings currently trending in the upper half of the range
Alliant Energy reported first quarter 2026 GAAP earnings of $0.87 per share, up from $0.83 a year earlier, while ongoing EPS was $0.82 versus $0.83. The company reaffirmed its 2026 ongoing EPS guidance of $3.36 to $3.46 per share and said it signed an electric service agreement in Iowa for about 370 megawatts of data center demand. For shareholders, GAAP results improved and guidance held, but the ongoing measure the company emphasizes edged down by one cent.
GAAP EPS was $0.87 in Q1 2026 versus $0.83 in Q1 2025; ongoing EPS was $0.82 versus $0.83.
Net income attributable to common shareowners was $224 million, up from $213 million; total revenues were $1,184 million, up from $1,128 million.
2026 ongoing EPS guidance of $3.36 to $3.46 per share was reaffirmed.
Total contracted data center demand is now about 3.4 GW after the new Iowa agreement.
Alliant Energy entered into a distribution agreement allowing it to sell up to $1 billion of common stock through a group of agents and forward purchasers, on March 19, 2026. The company says proceeds would be used for general corporate purposes, which may include debt repayment, working capital and construction and acquisition spending, and that no shares have been sold under the filing itself.
Program covers shares of common stock with an aggregate offering price of up to $1,000,000,000, sold on the Nasdaq Global Select Market or in block transactions.
The company may also enter into forward confirmations with forward purchasers; it would receive proceeds only upon physical settlement of those confirmations, on or before their maturity dates.
Shares are issued under Form S-3 Registration No. 333-276062 and a prospectus supplement dated March 19, 2026.
Several agents have affiliates that are lenders under the company's revolving credit facility.
Alliant Energy entered into a $400 million term loan credit agreement on March 2, 2026, with U.S. Bank National Association as administrative agent. The agreement also allows an incremental term loan of up to $100 million, but no lender is obligated to provide it, and the loan matures March 1, 2027.
$400 million term loan facility, dated March 2, 2026
Up to $100 million incremental term loan; no lender obligated to provide it
Maturity date March 1, 2027; proceeds may fund working capital, capital expenditures and refinancing
Covenant requires debt-to-capital ratio of not greater than 65%; cross-default triggers at $100 million or more of debt
Alliant Energy reported 2025 GAAP earnings of $3.14 per share, up from $2.69 in 2024, and ongoing earnings of $3.22 per share, up from $3.04. The company affirmed its 2026 ongoing EPS guidance of $3.36 to $3.46. Fourth-quarter results were weaker, with GAAP EPS of $0.55 versus $0.58 and ongoing EPS of $0.60 versus $0.70 a year earlier.
Full-year 2025 GAAP EPS of $3.14 vs. $2.69 in 2024; ongoing EPS of $3.22 vs. $3.04, which the company says is 6% growth.
Fourth-quarter 2025 GAAP EPS of $0.55 vs. $0.58 in Q4 2024; ongoing EPS of $0.60 vs. $0.70.
2026 ongoing EPS guidance of $3.36 to $3.46 affirmed, not changed.
Alliant Energy's boards increased their size to 11 directors and appointed Manu Asthana, former president and CEO of PJM Interconnection, as a director effective February 23, 2026. He will join the Audit and Operations Committees and is slated for election at the 2026 Annual Meeting of Shareowners, which matters to shareholders as it adds grid and electricity-market experience and a new board seat.
Manu Asthana, 52, appointed to the boards of Alliant Energy, Interstate Power and Light, and Wisconsin Power and Light effective February 23, 2026
Previously President and CEO of PJM Interconnection from 2020 to 2025; PJM oversees a grid serving 67 million people in 13 states and the District of Columbia
Will serve on the Audit Committee and Operations Committee; 2026 annual retainer for all Boards is $300,000
Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.
Only material 8-Ks get a brief: results, deals, executive changes, restructuring, impairments, delisting notices, restatements, cybersecurity incidents and other disclosed events. Routine filings (vote results, exhibits only) are skipped. Every Alliant Energy filing is on SEC EDGAR ↗. 8-K briefs of other companies →