Financing

6 Months Ended

Mar. 31, 2025

Debt Disclosure [Abstract]

Financing

6. FINANCING

Short-term

Spire, Spire Missouri and Spire Alabama have a syndicated revolving credit facility pursuant to a loan agreement with 12 banks through October 11, 2029. The loan agreement has an aggregate credit commitment of $1,500.0, including sublimits of $525.0 for the Spire holding company, $700.0 for Spire Missouri and $275.0 for Spire Alabama. These sublimits may be reallocated from time to time among the three borrowers within the $1,500.0 aggregate commitment, with commitment fees and interest margins applied for each borrower relative to its credit rating. The Spire holding company may use its line to provide for the funding needs of various subsidiaries. The agreement also contains financial covenants limiting each borrower’s consolidated total debt, including short-term debt, to no more than 70% of its total capitalization. As defined in the line of credit, on March 31, 2025, total debt was less than 65% of total capitalization for each borrower. There were no borrowings against this credit facility as of March 31, 2025.

Spire has a commercial paper program (“CP Program”) pursuant to which it may issue short-term, unsecured commercial paper notes. Amounts available under the CP Program may be borrowed, repaid and re-borrowed from time to time, with the aggregate face or principal amount of the notes outstanding under the CP Program at any time not to exceed $1,500.0. The notes may have maturities of up to 365 days from date of issue.

On January 3, 2024, Spire Missouri entered into a short-term loan agreement with several banks for a $200.0 unsecured term loan. Interest accrued at the one-month term secured overnight financing rate (“SOFR”) plus a SOFR adjustment of 0.10% per annum plus a margin of 0.90% per annum. Spire Missouri repaid $50.0 of this loan on April 5, 2024 and the remaining $150.0 balance on May 6, 2024.

Information about short-term borrowings, including Spire Missouri’s and Spire Alabama’s borrowings from Spire, is presented in the following table. As of March 31, 2025, $535.5 of Spire’s CP Program borrowings was used to support lending to the Utilities.

	Spire (Parent Only)			Spire Missouri						Spire Alabama			Spire
	CP			Term			Spire			Spire			Consol-
	Program			Loan			Note			Note			idated
Six Months Ended March 31, 2025
Highest borrowings outstanding	$	1,223.0		$	—		$	615.0		$	73.2		$	1,223.0
Lowest borrowings outstanding		943.5			—			461.3			1.2			943.5
Weighted average borrowings		1,103.1			—			544.1			47.0			1,103.1
Weighted average interest rate		4.5	%		0.0	%		4.8	%		4.8	%		4.5	%
As of March 31, 2025
Borrowings outstanding	$	1,015.0		$	—		$	461.3		$	41.8		$	1,015.0
Weighted average interest rate		4.3	%		0.0	%		4.7	%		4.7	%		4.3	%
As of September 30, 2024
Borrowings outstanding	$	947.0		$	—		$	495.3		$	48.4		$	947.0
Weighted average interest rate		5.2	%		0.0	%		5.2	%		5.2	%		5.2	%
As of March 31, 2024
Borrowings outstanding	$	586.0		$	200.0		$	243.9		$	37.4		$	786.0
Weighted average interest rate		5.6	%		6.3	%		5.6	%		5.6	%		5.8	%

Long-term

The long-term debt agreements of Spire, Spire Missouri and Spire Alabama contain customary financial covenants and default provisions. As of March 31, 2025, there were no events of default under these financial covenants.

Interest expense shown on the statements of income is net of the capitalized interest amounts shown in the following table.

	Three Months Ended March 31,				Six Months Ended  March 31,
	2025		2024		2025		2024
Spire	$	6.3	$	4.0	$	12.6	$	7.8
Spire Missouri		1.2		1.1		2.4		2.3
Spire Alabama		1.0		0.4		1.8		0.8

On April 21, 2025, Spire Missouri entered into a Bond Purchase Agreement pursuant to which it will issue and sell, in a private placement, First Mortgage Bonds to bond purchasers for an aggregate principal amount of $150.0. The first tranche consists of $90.0 in aggregate principal, bears interest at 4.88% and matures on September 15, 2030. The second tranche consists of $60.0 in aggregate principal, bears interest at 5.12% and matures on September 15, 2032. Interest is payable semi-annually on March 15 and September 15 of each year. The bonds are senior secured indebtedness of Spire Missouri and rank equally with all other existing and future senior secured indebtedness issued by Spire Missouri under its Mortgage and Deed of Trust. The bonds are secured by a first mortgage lien on substantially all the real properties of Spire Missouri, subject to limited exceptions. Spire Missouri anticipates using the proceeds for general corporate purposes.