Company: AILIM
Filing Date: 2025-09-16
Form Type: 424B2
Source: 0001104659-25-090464
Chunk: 66

Company: Ameren Illinois Co
Filing Date: 2025-09-16
Form: 424B2
Chunk 66
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 bonds of a series subject to a periodic offering (such as a medium-term note program), the mortgage trustee will be entitled to receive a certificate evidencing compliance with the net earnings requirements only once, at or prior to the time of the first authentication and delivery of the first mortgage bonds of such series.

#### Provisions of a Particular Series
The prospectus supplement applicable to a series of first mortgage bonds, other than senior note mortgage bonds, will specify:

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the designation of such first mortgage bonds;

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the date or dates on which the principal of such first mortgage bonds is payable;

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the interest rate or rates for such first mortgage bonds and the date or dates from which interest shall accrue;

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the dates on which interest will be payable;

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the record dates for payments of interest;

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the option, if any, for us to redeem such first mortgage bonds and the periods within which or the dates on which, the prices at which and the terms and conditions upon which such first mortgage bonds may be redeemed;

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our obligation, if any, to redeem or purchase such first mortgage bonds pursuant to any sinking fund or at the option of the holder and the terms and conditions upon which such first mortgage bonds will be redeemed; and

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any other terms not inconsistent with the provisions of the mortgage indenture.

Unless otherwise indicated in the applicable prospectus supplement, the first mortgage bonds will be denominated in United States currency in minimum denominations of $1,000 and integral multiples thereof.

There is no requirement under the mortgage indenture that our future issuances of debt securities be issued exclusively under the mortgage indenture, and we will be free to employ other indentures or documentation containing provisions different from those included in the mortgage indenture or applicable to one or more issuances of first mortgage bonds, in connection with future issuances of other debt securities.

The mortgage indenture provides that the first mortgage bonds will be issued in one or more series, may be issued at various times, may have differing maturity dates, may have differing redemption provisions and may bear interest at differing rates. We need not issue all first mortgage bonds of one series at the same time, and, unless otherwise indicated in the applicable prospectus supplement, we may from time to time, “reopen” a series of first mortgage bonds, without the consent of the existing holders of the first mortgage bonds of that series, which means we can create and issue further first mortgage bonds of such series having the same terms and conditions (including the same CUSIP number) in all respects,