ONE Gas, Inc. Announces $375M 5.45% Senior Notes Offering

What Happened
ONE Gas, Inc. announced an underwritten public offering of $375,000,000 aggregate principal amount of 5.45% Senior Notes due 2036. The Underwriting Agreement (dated Aug. 11, 2026) with BofA Securities, RBC Capital Markets and Truist Securities was completed and the offering closed on August 13, 2026. The notes were issued under a Base Indenture and a First Supplemental Indenture with U.S. Bank Trust Company, National Association, acting as trustee. The offering was made using ONE Gas’ shelf registration statement on Form S-3 (effective Feb. 23, 2026, File No. 333-293655).

Key Details

• Offering size: $375,000,000 of 5.45% Senior Notes due 2036.
• Dates: Underwriting Agreement dated August 11, 2026; offering completed August 13, 2026.
• Use of proceeds: ONE Gas anticipates using net proceeds to repay a $250 million unsecured term loan, repay amounts outstanding under its commercial paper program, and for general corporate purposes.
• Parties: Underwriters led by BofA Securities, RBC Capital Markets and Truist Securities; trustee is U.S. Bank Trust Company, National Association. Underwriters and affiliates have existing commercial and lending relationships with ONE Gas (including roles under its credit facility, term loan and $1.5 billion commercial paper program).

Why It Matters
This filing shows ONE Gas issued long-term debt at a 5.45% coupon maturing in 2036 and plans to use the proceeds to replace shorter-term borrowings (term loan and commercial paper). For investors, the transaction changes the company’s debt mix by adding fixed-rate, long-term notes and reducing short-term obligations; details such as the interest rate, maturity, and intended use of proceeds are the key facts to watch. Exhibits to the 8-K include the underwriting agreement and the indenture documents filed with the SEC.