Spire issues $900M in junior subordinated notes for TN gas acquisition

SPIRE INC

Issued $450M of 6.250% Series A Junior Subordinated Notes due 2056 and $450M of 6.450% Series B Junior Subordinated Notes due 2056.
Notes issued under indenture with Regions Bank as trustee; underwriters include BMO, J.P. Morgan, Wells Fargo, Mizuho, Morgan Stanley, RBC.
Net proceeds to finance acquisition of Piedmont Natural Gas Company's Tennessee natural gas business from Duke Energy.
Notes registered under existing S-3 shelf; prospectus supplement filed Nov. 19, 2025.
Issuance completed Nov. 24, 2025.

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