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Long-Term Debt | 12 Months Ended
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Sep. 30, 2025
Debt Disclosure [Abstract] |
Long-Term Debt | Long-Term Debt U.S. Revolver On October 4, 2023, we entered into a third amendment (the Third Amendment) to our credit agreement with Bank of America, N.A. (as amended, the U.S. Revolver). The Third Amendment, which added Texas Capital Bank as Syndication Agent and a lender, increased the amount of the revolving line of credit from $125.0 million to $150.0 million, and extended the expiry date to October 4, 2028. The aggregate commitment of $150.0 million consists of $100.0 million committed by Bank of America and $50.0 million committed by Texas Capital Bank. As amended by the Third Amendment, the lesser of (a) $60.0 million, (b) 60% of available cash, and (c) the aggregate face amount of the issued but undrawn letters of credit that are not cash-secured shall be deducted from consolidated funded indebtedness when calculating the consolidated net leverage ratio. We have the option to cash collateralize all or a portion of the letters of credit outstanding, which would favorably impact the consolidated funded indebtedness calculation and the consolidated net leverage ratio. On June 26, 2024, in connection with the expected discontinuation of the publication of the Canadian Dollar Offered Rate (CDOR), we further amended the U.S. Revolver by entering into a Canadian benchmark replacement conforming changes amendment with Bank of America, N.A. that added and amended certain terms related to the replacement of the CDOR as a benchmark rate with the forward-looking term rate based on the Canadian Overnight Repo Rate Average. On September 24, 2024, in connection with the expected discontinuation of the publication of the Bloomberg Short-Term Bank Yield Index Rate as administered by the Bloomberg Index Service Limited (BSBY), we further amended the U.S. Revolver by entering into a conforming changes amendment with Bank of America, N.A. that added and amended certain terms related to the replacement of the BSBY as a benchmark rate with the Secured Overnight Financing Rate (SOFR) as administered by the Federal Reserve Bank of New York. On September 30, 2025, we entered into a fourth amendment to the U.S. Revolver associated with a reorganization of holding companies of our foreign subsidiaries, replacing the prior share pledge on 65% of the equity interests of Powell Industries International, B.V., with the share pledge on 65% of the equity interests of Powell Industries International Limited. As of September 30, 2025, there were no amounts borrowed under the U.S. Revolver, and letters of credit outstanding were $77.5 million. There was $72.5 million available for the issuance of letters of credit and borrowings under the U.S. Revolver as of September 30, 2025. As of September 30, 2025, we are required to maintain certain financial covenants, the most significant of which are a consolidated net leverage ratio of less than 3.0 to 1.0 and a consolidated interest coverage ratio of greater than 3.0 to 1.0. Our most restrictive covenant, the consolidated net leverage ratio, is the ratio of earnings before interest, taxes, depreciation, amortization and stock-based compensation (EBITDAS) to funded indebtedness. An increase in indebtedness, which includes letters of credit, or a decrease in EBITDAS, could restrict our ability to issue letters of credit or borrow under the U.S. Revolver. Additionally, we must maintain a consolidated cash balance of $60 million at all times, which can be deducted from the letters of credit outstanding as noted above. The U.S. Revolver also contains a “material adverse effect” clause, which is a material change in our operations, business, properties, liabilities or condition (financial or otherwise) or a material impairment of our ability to perform our obligations under the U.S. Revolver. As of September 30, 2025, we were in compliance with all of the financial covenants of the U.S. Revolver. The U.S. Revolver allows the Company to elect that any borrowing under the facility bears an interest rate based on either the base rate or the eurocurrency rate, in each case, plus the applicable rate. The base rate is generally the highest of (a) the federal funds rate plus 0.50%, (b) the Bank of America prime rate or (c) the SOFR rate plus 1.00%. The applicable rate is generally a range from 0% to 2% depending on the type of loan and the Company’s consolidated net leverage ratio. The U.S. Revolver is collateralized by a pledge of 100% of the voting capital stock of each of our domestic subsidiaries and 65% of the voting capital stock of each non-domestic subsidiary. The U.S. Revolver provides for customary events of default and carries cross-default provisions with other existing debt agreements. If an event of default (as defined in the U.S. Revolver) occurs and is continuing, on the terms and subject to the conditions set forth in the U.S. Revolver, amounts and letters of credit outstanding under the U.S. Revolver may be accelerated and may become immediately due and payable.

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