The company said its subsidiary Interstate Power and Light Company (IPL) entered into an Underwriting Agreement with the underwriters on September 8, 2025 to sell $300 million of 5.600% Senior Debentures due 2055 in a public offering.

8-KOther EventsFiled Sep 11, 2025Period of report Sep 8, 2025Summary published (UTC) Oct 16, 2026

Key points

AI summary

The company said its subsidiary Interstate Power and Light Company (IPL) entered into an Underwriting Agreement with the underwriters on September 8, 2025 to sell $300 million of 5.600% Senior Debentures due 2055 in a public offering.
The company said the debentures mature on October 1, 2055, and the offering is expected to close on September 11, 2025, subject to customary closing conditions.
The company said IPL plans to use the net proceeds of the offering to reduce outstanding capital under its receivables purchase and sale program, reduce outstanding commercial paper, and/or for general corporate purposes.
The company said the debentures are registered under an automatic shelf registration statement on Form S-3 (Registration No. 333-276062-01) filed on December 15, 2023, and that KeyBanc Capital Markets Inc., PNC Capital Markets LLC, TD Securities (USA) LLC and U.S. Bancorp Investments, Inc. are joint book-running managers.

Summary

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Analysis scope · Filing body and confirmed press-release exhibitWe analyzed the filing body and confirmed exhibits. This is not a review of other exhibits, investor presentations or the full earnings call.

IPL, $300 million Senior Debentures Offering Under Underwriting Agreement

The company said its subsidiary Interstate Power and Light Company (IPL) entered into an Underwriting Agreement with the underwriters on September 8, 2025 to sell $300 million of 5.600% Senior Debentures due 2055 in a public offering.

Source · Based on the filing body and exhibits

Maturity Date and Expected Closing Date

The company said the debentures mature on October 1, 2055, and the offering is expected to close on September 11, 2025, subject to customary closing conditions.

Source · Based on the filing body and exhibits

Use of Offering Proceeds

The company said IPL plans to use the net proceeds of the offering to reduce outstanding capital under its receivables purchase and sale program, reduce outstanding commercial paper, and/or for general corporate purposes.

Source · Based on the filing body and exhibits

Offering Documents and Underwriting Group

The company said the debentures are registered under an automatic shelf registration statement on Form S-3 (Registration No. 333-276062-01) filed on December 15, 2023, and that KeyBanc Capital Markets Inc., PNC Capital Markets LLC, TD Securities (USA) LLC and U.S. Bancorp Investments, Inc. are joint book-running managers.

Source · Based on the filing body and exhibits

AI summarized the filing and translated the summary into English; it may differ from the original. For reference only, not investment advice. AI translated the published Korean report into English. Figures are copied as filed, not recalculated.

Original filing

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