Alliant Energy shareowners approve directors and auditor

Alliant Energy Corporation reported the results of its annual meeting of shareowners held on May 20, 2026.

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Form Type

8-K

Rhea-AI Filing Summary

Alliant Energy Corporation reported the results of its annual meeting of shareowners held on May 20, 2026. All four director nominees — Patrick Allen, Manu Asthana, Ignacio Cortina, and Michael Garcia — were elected for terms ending in 2029, each receiving substantially more votes "for" than "against."

Shareowners also approved, on an advisory and non-binding basis, the compensation of the company’s named executive officers, with over 196 million votes in favor. In addition, the appointment of Deloitte & Touche LLP as independent registered public accounting firm for 2026 was ratified with more than 221 million votes in support.

8-K Event Classification

Item 5.07 — Submission of Matters to a Vote of Security Holders

1 item

Item 5.07 Submission of Matters to a Vote of Security Holders Governance

Results of a shareholder vote on proposals at an annual or special meeting.

Key Figures

Executive pay approval votes: 196,043,476 votes for Auditor ratification support: 221,486,729 votes for Votes for Patrick Allen: 190,057,409 votes for +3 more

6 metrics

Executive pay approval votes 196,043,476 votes for Advisory vote on named executive officer compensation

Auditor ratification support 221,486,729 votes for Ratification of Deloitte & Touche LLP for 2026

Votes for Patrick Allen 190,057,409 votes for Election as director, term ending 2029

Votes for Manu Asthana 204,157,674 votes for Election as director, term ending 2029

Votes for Ignacio Cortina 191,505,839 votes for Election as director, term ending 2029

Votes for Michael Garcia 177,498,853 votes for Election as director, term ending 2029

Key Terms

broker non-votes, advisory, non-binding basis, independent registered public accounting firm, Emerging Growth Company, +1 more

5 terms

broker non-votes financial

"For | Against | Abstain | Broker Non-Votes Patrick Allen | 190,057,409 | 15,461,011 | 316,328 | 23,966,787"

Broker non-votes occur when a brokerage firm is unable to vote on a shareholder’s behalf during a company election or decision because the shareholder has not given specific voting instructions, and the broker is not allowed or chooses not to vote on certain matters. They are important because they can affect the outcome of votes, especially when the results are close, by effectively reducing the total number of votes cast.

advisory, non-binding basis financial

"Approve, on an advisory, non-binding basis, the compensation of our named executive officers."

independent registered public accounting firm financial

"Ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for 2026."

An independent registered public accounting firm is an outside accounting company officially registered with the government regulator to examine and report on a public company's financial records and controls. Investors treat its reports like an impartial inspector’s certificate — they add credibility to financial statements, help spot errors or misleading claims, and reduce the risk that shareholders are relying on unchecked or biased numbers.

Emerging Growth Company regulatory

"Emerging Growth Company"

An emerging growth company is a recently public or smaller public firm that qualifies for temporary, lighter regulatory and disclosure rules to reduce the cost and effort of being public. For investors, it means the company may provide less historical financial detail and face fewer reporting requirements than larger firms, so it can grow more quickly but also carries higher uncertainty—like buying a promising early-stage product with fewer user reviews.

annual meeting of shareowners financial

"during the annual meeting of shareowners of Alliant Energy Corporation on May 20, 2026"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Alliant Energy (LNT) shareowners vote on at the 2026 annual meeting?

Shareowners voted on electing four directors, approving executive compensation on an advisory basis, and ratifying Deloitte & Touche LLP as independent registered public accounting firm for 2026. All three proposals received sufficient support to pass.

Were Alliant Energy (LNT) director nominees elected at the May 20, 2026 meeting?

Yes. All four nominees—Patrick Allen, Manu Asthana, Ignacio Cortina, and Michael Garcia—were elected to terms ending in 2029, each receiving significantly more votes "for" than "against," with additional broker non-votes reported.

How did Alliant Energy (LNT) shareowners vote on executive compensation in 2026?

Shareowners approved the advisory, non-binding resolution on named executive officer compensation, with 196,043,476 votes for, 8,748,646 against, and 1,042,626 abstentions, plus 23,966,787 broker non-votes recorded on the item.

Was Deloitte & Touche LLP reappointed as Alliant Energy (LNT) auditor for 2026?

Yes. The ratification of Deloitte & Touche LLP as Alliant Energy’s independent registered public accounting firm for 2026 passed with 221,486,729 votes for, 7,841,355 against, and 473,451 abstentions, with no broker non-votes disclosed for this proposal.

What were the vote totals for Patrick Allen’s election to Alliant Energy’s board?

Patrick Allen received 190,057,409 votes for, 15,461,011 against, and 316,328 abstentions, along with 23,966,787 broker non-votes. This result secured his election to the board for a term ending in 2029.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/21/2026 - 05:05 PM

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) May 20, 2026

Name of Registrant, State of Incorporation, Address of Principal Executive Offices, Telephone Number, Commission File Number, IRS Employer Identification Number

ALLIANT ENERGY CORPORATION

(a Wisconsin Corporation)

4902 N. Biltmore Lane

Madison, Wisconsin 53718

Telephone (608) 458-3311

Commission File Number - 1-9894

IRS Employer Identification Number - 39-1380265

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Alliant Energy Corporation, Common Stock, $0.01 Par Value, Trading Symbol LNT, Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging Growth Company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.07 Submission of Matters to a Vote of Security Holders.

The final results of voting on each of the matters submitted to a vote of shareowners during the annual meeting of shareowners of Alliant Energy Corporation on May 20, 2026 are as follows.

1.Election of directors. Each nominee for director was elected for a term ending in 2029 by the following vote:


	For	Against	Abstain	Broker Non-Votes
Patrick Allen	190,057,409	15,461,011	316,328	23,966,787
Manu Asthana	204,157,674	1,248,759	428,315	23,966,787
Ignacio Cortina	191,505,839	13,801,874	527,035	23,966,787
Michael Garcia	177,498,853	27,812,589	523,306	23,966,787

2.Approve, on an advisory, non-binding basis, the compensation of our named executive officers. This matter was approved by the following vote:


For	Against	Abstain	Broker Non-Votes
196,043,476	8,748,646	1,042,626	23,966,787

3.Ratify the appointment of Deloitte & Touche LLP as our independent registered public accounting firm for 2026. This matter was approved by the following vote:


For	Against	Abstain
221,486,729	7,841,355	473,451

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, Alliant Energy Corporation has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


			ALLIANT ENERGY CORPORATION

Date: May 21, 2026			By:/s/ Omar N. Chaudhary
			Omar N. Chaudhary
			Corporate Secretary

Source: View Original Filing on SEC EDGAR

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