ALLIANT ENERGY CORP (LNT): debt financing — Alliant Energy closes $575M 3.250% convertible notes offering due 2028

ALLIANT ENERGY CORP

$575M aggregate principal of 3.250% convertible senior notes due 2028 issued, including full $75M option exercise.
Initial conversion rate 13.1773 shares per $1,000 principal, conversion price ~$75.89/share (27.5% premium).
Net proceeds ~$567M (after discounts) to repay debt, reduce commercial paper, or general corporate purposes.
Notes mature May 30, 2028; interest payable semi-annually starting Nov 30, 2025.

item 1.01 item 2.03 item 3.02 item 8.01 item 9.01

Key facts

Extracted from this filing and checked against the source text.

Debt Financings SEC 8-K Item 2.03/2.04 confidence 0.99

ALLIANT ENERGY CORP incurred convertible notes of $575 million aggregate principal amount with The Bank of New York Mellon Trust Company, N.A. at 3.250% per year maturing May 30, 2028.

Instrument: convertible notes
Principal: $575 million aggregate principal amount
Counterparty: The Bank of New York Mellon Trust Company, N.A.
Rate: 3.250% per year
Maturity: May 30, 2028
Event: incurrence

Exact text from the filing

On May 15, 2025, Alliant Energy Corporation (the “ Company ”) completed its previously announced sale of $575 million aggregate principal amount of 3.250% Convertible Senior Notes due 2028 (the “ Notes ”), which amount includes the exercise in full of the $75 million option to purchase additional Notes granted to the initial purchasers, in a private offering to persons reasonably believed to be qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “ Securities Act ”).

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Source: SEC EDGAR

accession 0001193125-25-120808

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