American Water Capital Corp. Senior Notes Offering

American Water Capital Corp. (AWCC), a subsidiary of American Water Works Company, Inc., has completed the sale of $500.0 million in aggregate principal amount of 5.550% Senior Notes due 2033. The offering, which closed on September 16, 2026, yielded net proceeds of approximately $496.6 million after underwriting discounts and before offering expenses. AWCC intends to use these proceeds for several purposes: repaying $250.0 million of its outstanding 3.000% senior notes due December 1, 2026, lending funds to American Water and its subsidiaries in the Regulated Businesses segment, repaying a portion of its outstanding commercial paper, and for general corporate purposes. The Notes were issued under an Indenture dated December 4, 2009, with Computershare Trust Company, N.A., as successor trustee. This filing serves to report the closing of the offering and includes related exhibits.