Company: AILIM
Filing Date: 2025-09-16
Form Type: 424B2
Source: 0001104659-25-090464
Chunk: 67

Company: Ameren Illinois Co
Filing Date: 2025-09-16
Form: 424B2
Chunk 67
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 except for the date of original issuance, the offering price and, if applicable, the initial interest accrual date and the initial interest payment date. Additional first mortgage bonds issued in this manner will be consolidated with, and form a single series with, the previously outstanding first mortgage bonds of the same series.

The senior note mortgage bonds will have the same aggregate principal amount, interest rate and maturity date as the related series of senior secured debt securities and will be redeemable when the related series of senior secured debt securities is redeemable or when payment of the related series of senior secured

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debt securities has been accelerated after an event of default. Upon payment of the principal of, premium, if any, or interest on the senior secured debt securities, senior note mortgage bonds of the corresponding series in a principal amount equal to the principal amount of such senior secured debt securities so paid will be deemed fully paid and our obligation to make such payment shall be discharged.

Unless otherwise indicated in the applicable prospectus supplement, there are no provisions in the mortgage indenture or the first mortgage bonds that require us to redeem (other than as described in the prior paragraph), or permit the holders to cause a redemption of, the first mortgage bonds or, except as described under “— Priority and Security” and “— Issuance of Additional First Mortgage Bonds,” that otherwise protect the holders in the event that we incur substantial additional indebtedness, whether or not in connection with a change in control.

#### Registration, Transfer and Exchange
Unless otherwise indicated in the applicable prospectus supplement, other than senior note mortgage bonds, each series of first mortgage bonds will initially be issued in the form of one or more global securities, in registered form, without coupons, as described under “Book-Entry System.” The global securities will be registered in the name of a nominee of DTC, as depositary, and deposited with, or on behalf of, the depositary. Except as set forth under “Book-Entry System,” owners of beneficial interests in a global security will not be entitled to have first mortgage bonds registered in their names, will not receive or be entitled to receive physical delivery of any first mortgage bonds and will not be considered the registered holders thereof under the mortgage indenture.

First mortgage bonds will be exchangeable for other first mortgage bonds of the same series of any authorized denominations and of a like aggregate principal amount and tenor. Unless otherwise indicated in the applicable prospectus supplement, subject to the terms of the mortgage