Company: AILIM
Filing Date: 2025-09-16
Form Type: 424B2
Source: 0001104659-25-090464
Chunk: 89

Company: Ameren Illinois Co
Filing Date: 2025-09-16
Form: 424B2
Chunk 89
---
35</div>

TABLE OF CONTENTS

interest on any senior unsecured debt securities, the senior unsecured trustee may withhold such notice if it determines in good faith that it is in the interest of such holders to do so. We will be required to deliver to the senior unsecured trustee each year a certificate as to whether or not, to the knowledge of the officer signing such certificate, we are in compliance with the conditions and covenants under the senior unsecured indenture.

#### Modification
The senior unsecured trustee and we may modify and amend the senior unsecured indenture with the consent of the holders of a majority in principal amount of the outstanding senior unsecured debt securities, considered as one class, provided that no such modification or amendment may, without the consent of the holder of each outstanding senior unsecured debt security affected thereby:

•

change the maturity date of any senior unsecured debt security;

•

reduce the rate, or change the method of calculation thereof, or extend the time of payment of interest on any senior unsecured debt security;

•

reduce the principal amount of, or premium payable on, any senior unsecured debt security;

•

change the coin or currency of any payment of principal of, premium, if any, or interest on any senior unsecured debt security;

•

change the date on which any senior unsecured debt security may be redeemed or adversely affect the rights of a holder to institute suit for the enforcement of any payment on any senior unsecured debt security; or

•

modify the foregoing requirements or reduce the percentage of outstanding senior unsecured debt securities necessary to modify or amend the senior unsecured indenture or to waive any past default to less than a majority.

The senior unsecured trustee and we may modify and amend the senior unsecured indenture without the consent of the holders:

•

to change or eliminate any of the provisions of the senior unsecured indenture, provided that any such change or elimination shall become effective only when there are no outstanding senior unsecured debt securities created prior to the execution of such supplemental indenture which is entitled to the benefit of such provision or such change or elimination is applicable only to senior unsecured debt securities issued after the effective date of such change or elimination;

•

to establish the form of the senior unsecured debt securities of any series as permitted by the senior unsecured indenture or to establish or reflect any terms of the senior unsecured debt securities of any series as determined by the senior unsecured indenture;

•

to evidence the succession of another corporation to us as permitted by the senior un