Company: AILIM
Filing Date: 2025-09-16
Form Type: 424B2
Source: 0001104659-25-090464
Chunk: 82

Company: Ameren Illinois Co
Filing Date: 2025-09-16
Form: 424B2
Chunk 82
---
 December 1, 1998. As trustee under the mortgage indenture, The Bank of New York Mellon Trust Company, N.A. could have a conflicting interest for purposes of the Trust Indenture Act of 1939 if a mortgage event of default were to occur under the mortgage indenture. In that case, the mortgage trustee may be required to eliminate such conflicting interest by resigning as mortgage trustee. There are other instances under the Trust Indenture Act of 1939 which would require the resignation of the mortgage trustee if a mortgage event of default were to occur.

#### Governing Law
The mortgage indenture is, and the senior note mortgage bonds will be, governed by and construed in accordance with Illinois law.

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TABLE OF CONTENTS

### DESCRIPTION OF SENIOR UNSECURED DEBT SECURITIES

#### General
The senior unsecured debt securities will be issued in one or more series under a senior unsecured indenture between us and a trustee. The form of the senior unsecured indenture and the form of supplemental indenture or other instrument establishing the senior unsecured debt securities of a particular series are exhibits to, or will be subsequently incorporated by reference into, the registration statement of which this prospectus is a part. The senior unsecured indenture will be qualified under the Trust Indenture Act of 1939. The senior unsecured debt securities of all series that may be issued under the senior unsecured indenture are referred to in this prospectus as “senior unsecured debt securities.” The following summaries of certain provisions of the senior unsecured indenture do not purport to be complete and are subject to, and qualified in their entirety by, all provisions of the senior unsecured indenture and the senior unsecured debt securities.

#### Ranking
The senior unsecured debt securities will be our direct unsecured general obligations and will rank equally in right of payment with all of our other unsecured and unsubordinated debt and will be effectively junior to all of our secured debt, including our first mortgage bonds (and any related senior secured debt securities), as to the collateral pledged to secure this debt. Unless otherwise indicated in the applicable prospectus supplement, the senior unsecured indenture will not limit the aggregate amount of debt we may incur.

The senior unsecured indenture will provide that our obligations to compensate the trustee and reimburse the trustee for expenses, disbursements and advances will constitute indebtedness which will be secured by a lien upon all property and funds held or collected