Here are the 424B prospectus supplements from Atmos Energy Corporation (ATO) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 424B covers the supplement that carries the terms of a priced offering, so if you follow ATO and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full ATO filings page.
Atmos Energy Corporation (ATO) is offering $700,000,000 aggregate principal amount of 6.000% senior notes due November 15, 2036. The public offering price is 99.638% of principal, and the underwriting discount is 0.650%. Atmos Energy estimates net proceeds of approximately $691.4 million after the discount and estimated offering expenses, for general corporate purposes.
The notes bear interest at 6.000% per year, payable each May 15 and November 15 beginning May 15, 2027. They are unsecured and unsubordinated, rank equally with existing and future unsecured and unsubordinated debt, and are effectively subordinated to secured debt and subsidiary liabilities. The notes will not be listed on an exchange; delivery is expected on or about October 9, 2026. For the nine months ended June 30, 2026, unaudited operating revenues were $4,184.046 million and net income was $1,227.552 million, compared with $3,965.275 million and $1,023.863 million, respectively, in the prior-year period. Atmos Energy cautions that the 2026 nine-month results are not necessarily indicative of fiscal-year results because of business seasonality.
Atmos Energy Corporation is preparing a primary offering of senior notes under its shelf registration, subject to completion. Atmos Energy expects to use the net proceeds for general corporate purposes. The notes are unsecured senior obligations.
Atmos Energy Corporation completed an offering of $700,000,000 aggregate principal amount of 4.750% Senior Notes due 2032. The notes bear interest at 4.750%, mature on January 15, 2032, and were issued June 18, 2026 in book-entry form. Net proceeds are estimated at approximately $693.9 million and will be used for general corporate purposes, including repayment of commercial paper (approximately $95 million outstanding as of June 10, 2026).
Atmos Energy Corporation is marketing a series of unsecured senior notes due 2032 in a prospectus supplement dated June 15, 2026. The notes will be issued in book-entry form through DTC, will rank equally with Atmos Energy’s other unsecured unsubordinated debt and will be effectively subordinated to any secured debt.
The prospectus supplement describes an optional redemption feature (including a Par Call Date), customary payment and settlement mechanics, tax and withholding considerations, and the planned use of proceeds for general corporate purposes, including repayment of commercial paper. As disclosed, Atmos had approximately $95 million of commercial paper outstanding as of June 10, 2026.
Atmos Energy Corporation has an existing common stock offering with an aggregate offering price of up to $1,700,000,000. This supplement updates how commissions are described in its forward sale agreements tied to that offering.
For each forward sale agreement, the forward seller will receive a commission, reflected as a reduced initial forward sale price, at a mutually agreed rate that will not exceed 2.50% of the volume-weighted average sales price of borrowed shares sold during the applicable period. No other changes to the prior prospectus supplement are made.