Company: AILIM
Filing Date: 2025-09-16
Form Type: 424B2
Source: 0001104659-25-090464
Chunk: 60

Company: Ameren Illinois Co
Filing Date: 2025-09-16
Form: 424B2
Chunk 60
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 bonds issued to secure our obligations under the senior secured indenture and the senior secured debt securities issued thereunder as “senior note mortgage bonds.”

Reserved Rights to Amend the Mortgage Indenture and Consents

We have reserved the right to amend the mortgage indenture without any consent or other action of the holders of any series of first mortgage bonds, including any senior note mortgage bonds, created after October 25, 2017, as described below under “— Priority and Security,” “— Issuance of Additional First Mortgage Bonds,” “— Remedies,” “— Consolidation, Merger, Conveyance, Transfer or Lease” and “— Release of Property.” In addition, unless otherwise indicated in the applicable prospectus supplement, each initial and future holder of first mortgage bonds (other than senior note mortgage bonds) of every series created after the date of this prospectus will irrevocably (a) consent to each of such amendments to the mortgage indenture without any other or further action by any holder of such first mortgage bonds and (b) designate the mortgage trustee as the proxy of such holder with irrevocable instructions to vote and deliver written consent on behalf of such holder in favor of such amendments at any meeting of bondholders, in lieu of any meeting of bondholders, in response to any consent solicitation or otherwise. As of September 30, 2023, the holders of first mortgage bonds (other than senior note mortgage bonds) in the principal amount of $3,805 million (representing 100% of the aggregate principal amount of first mortgage bonds (other than senior note mortgage bonds) then outstanding) have consented to such amendments. For information regarding voting or consents by the holder of senior note mortgage bonds, the senior secured trustee, see “— Voting of Senior Note Mortgage Bonds Held by Senior Secured Trustee” under “Description of Senior Secured Debt Securities” in this prospectus.

#### Priority and Security
The first mortgage bonds, including the senior note mortgage bonds, will be secured by a lien of the mortgage indenture, which, subject to certain exceptions, is a first lien on our “mortgaged property,” which is substantially all of our properties used or to be used in the purchase, transmission, distribution and sale of electricity and natural gas other than the excepted property described below. The mortgage indenture also contains provisions subjecting such property we acquire in the future (with certain exceptions) to the lien of the mortgage indenture.

The lien of the mortgage indenture