Company: AILIM
Filing Date: 2025-09-16
Form Type: 424B2
Source: 0001104659-25-090464
Chunk: 77

Company: Ameren Illinois Co
Filing Date: 2025-09-16
Form: 424B2
Chunk 77
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 holders of the first mortgage bonds of any other series or tranche.

#### Waiver
The holders of a majority in aggregate principal amount of all first mortgage bonds may waive our obligations to comply with certain covenants, including our obligation to maintain our corporate existence and properties, pay taxes and discharge liens, maintain certain insurance and to make such recordings and filings as are necessary to protect the security of the holders and the rights of the mortgage trustee, provided that such waiver occurs before the time such compliance is required. The holders of a majority of the aggregate principal amount of outstanding first mortgage bonds of all affected series or tranches,

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considered as one class, may waive, before the time for such compliance, compliance with our obligations to maintain an office or agency where the first mortgage bonds of such series or tranches may be surrendered for payment, registration, transfer or exchange, and compliance with any other covenant specified in a supplemental indenture respecting such series or tranches.

#### Defeasance and Discharge
Any first mortgage bond or bonds, or any portion of the principal amount thereof, will be deemed to have been paid for purposes of the mortgage indenture and the entire indebtedness in respect thereof will be deemed to have been satisfied and discharged, if there has been irrevocably deposited with the mortgage trustee, in trust:

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money in the amount which will be sufficient,

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“eligible obligations” (as described below) which do not contain provisions permitting the redemption or other prepayment thereof at the option of the issuer thereof, the principal of and the interest on which when due, without any regard to reinvestment thereof, will provide monies which will be sufficient, or

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a combination of the foregoing which will be sufficient,

to pay when due the principal of, premium, if any, and interest on such first mortgage bond or bonds or portions thereof.

For this purpose, “eligible obligations” include direct obligations of, or obligations unconditionally guaranteed by, the United States of America, entitled to the benefit of the full faith and credit thereof, and certificates, depository receipts or other instruments which evidence a direct ownership interest in such obligations or in any specific interest or principal payments due in respect thereof.

Consolidation, Merger, Conveyance, Transfer or Lease

We have agreed not to consolidate with or merge into any other entity or convey, transfer or lease the mortgaged property as or substantially as an entirety to any entity unless:

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such transaction