AEEAmeren

Customers the company names as a large share of revenue or receivables (it must name any worth 10% of revenue).

No specific sentence about this in the 10-K.

Parts or manufacturing that depend on one or a few suppliers.

“Approximately 96% of Ameren Missouri’s coal is purchased from the Powder River Basin in Wyoming, which has a limited number of suppliers.”

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Pending cases, settlements and what the company has set aside for them.

New “In March 2025, Ameren Illinois filed an appeal of the ICC’s December 2024 order to the Illinois Appellate Court for the Fifth Judicial District to revise the allowed ROE and to include an asset associated with other postretirement benefits in the rate base, among other things.”

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New “In January 2026, Ameren Illinois filed an appeal of the ICC’s November 2025 order and the ICC’s January 2026 order rejecting Ameren Illinois’ rehearing request to the Illinois Appellate Court for the Fifth Judicial District.”

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“the absence of a 2024 charge recorded by Ameren Missouri, included in other operation and maintenance expenses, related to a settlement agreement with the United States Department of Justice that resolved all outstanding claims in the NSR and Clean Air Act litigation related to the Rush Island Energy Center, see Note 14 - Commitments and Contingencies under Part II, Item 8, of this report for additional information (17 cents per share);”

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New “The absence in 2025 of a $59 million charge, related to the NSR and Clean Air Act litigation associated with the Rush Island Energy Center, see Note 14 - Commitments and Contingencies under Part II, Item 8, of this report for additional information.”

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New “Ameren Missouri paid $19 million during 2025 to fund mitigation programs ordered in the NSR and Clean Air Act litigation discussed in Note 14 – Commitments and Contingencies under Part II, Item 8, of this report.”

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Promises to pay someone else's debts or losses if they cannot.

No specific sentence about this in the 10-K.

Conditions in loan agreements that, if broken, can make debt due early.

“At December 31, 2025, the Ameren Companies were in compliance with the provisions and covenants contained within their credit agreements, indentures, and articles of incorporation, as applicable, and ATXI was in compliance with the provisions and covenants contained in its note purchase agreements.”

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“under Part II, Item 8, of this report for a discussion of covenants and provisions (and applicable cross-default provisions) contained in our credit agreements, certain of the Ameren Companies’ indentures and articles of incorporation, and ATXI’s note purchase agreements.”

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“The information below is a summary of the Ameren Companies’ compliance with indebtedness provisions and other covenants.”

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“The Ameren Companies were in compliance with the provisions and covenants of the Credit Agreements at December 31, 2025.”

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“At December 31, 2025, the Ameren Companies were in compliance with the provisions and covenants contained in their indentures and articles of incorporation, as applicable, and ATXI was in compliance with the provisions and covenants contained in its note purchase agreements.”

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Contracts the company must pay for later: purchase obligations, take-or-pay deals.

“Ameren’s, Ameren Missouri’s, and Ameren Illinois’ estimated minimum purchase obligations associated with these commitments totaled $2.1 billion, $1.0 billion, and, $1.1 billion, respectively, which include $0.8 billion, $0.3 billion, and $0.5 billion,”

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New “As of December 31, 2025, the maximum exposure to loss related to these variable interest entities is limited to the investment in these partnerships of $64 million plus associated outstanding funding commitments of $28 million.”

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