# EDGAR Filing Document

**Accession Number:** 0000018654
**File Stem:** 0001104659-23-002326
**Filing Date:** 2023-1
**Character Count:** 6597
**Document Hash:** 4a56444e1671b203bbc71829c8d2c3ba
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-002326.hdr.sgml**: 20230109

**ACCESSION NUMBER**: 0001104659-23-002326

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20230106

**ITEM INFORMATION**: Other Events

**FILED AS OF DATE**: 20230109

**DATE AS OF CHANGE**: 20230109

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMEREN CORP
- **CENTRAL INDEX KEY:** 0001002910
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC & OTHER SERVICES COMBINED [4931]
- **IRS NUMBER:** 431723446
- **STATE OF INCORPORATION:** MO
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14756
- **FILM NUMBER:** 23518801

**BUSINESS ADDRESS:**
- **STREET 1:** 1901 CHOUTEAU AVE
- **STREET 2:** MC 1310
- **CITY:** ST LOUIS
- **STATE:** MO
- **ZIP:** 63166-6149
- **BUSINESS PHONE:** 314-621-3222

**MAIL ADDRESS:**
- **STREET 1:** 1901 CHOUTEAU AVE
- **STREET 2:** MC 1310
- **CITY:** ST LOUIS
- **STATE:** MO
- **ZIP:** 63103
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Ameren Illinois Co
- **CENTRAL INDEX KEY:** 0000018654
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC & OTHER SERVICES COMBINED [4931]
- **IRS NUMBER:** 370211380
- **STATE OF INCORPORATION:** IL
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-03672
- **FILM NUMBER:** 23518802

**BUSINESS ADDRESS:**
- **STREET 1:** 10 RICHARD MARK WAY
- **CITY:** COLLINSVILLE
- **STATE:** IL
- **ZIP:** 62234
- **BUSINESS PHONE:** 618-343-8150

**MAIL ADDRESS:**
- **STREET 1:** 10 RICHARD MARK WAY
- **CITY:** COLLINSVILLE
- **STATE:** IL
- **ZIP:** 62234

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CENTRAL ILLINOIS PUBLIC SERVICE CO
- **DATE OF NAME CHANGE:** 19920703

?xml version="1.0" encoding="utf-8"?

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934**

**Date of report (Date of earliest event reported): January 6, 2023**

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp;<br>**Commission File Number** | &nbsp;&nbsp;**Exact Name of Registrant as <br> Specified in Charter;**<br> **State of Incorporation;**<br> **Address and Telephone Number** | &nbsp;&nbsp;<br> **IRS Employer**<br> **Identification Number** |
| &nbsp;&nbsp;<br>**1-14756** | &nbsp;&nbsp; <br>**Ameren Corporation**<br> **(Missouri Corporation)**<br> **1901 Chouteau Avenue**<br> **St. Louis** **, Missouri 63103**<br> **(314) 621-3222**<br>| &nbsp;&nbsp;<br>**43-1723446** |
| &nbsp;&nbsp;**1-3672** | &nbsp;&nbsp;**Ameren Illinois Company**<br> **(Illinois Corporation)**<br> **10 Richard Mark Way**<br> **Collinsville** **, Illinois 62234**<br> **(618) 343-8150** | &nbsp;&nbsp;**37-0211380** |

---

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrants under any of the following provisions:

◻ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

◻ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

◻ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

◻ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | |
|:---|:---|
| Title of each class | Name of each exchange on which registered |
| Common Stock, $0.01 par value per share<br> AEE | New York Stock Exchange |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging Growth Company <br> Ameren Corporation ◻ <br> Ameren Illinois Company ◻

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Ameren Corporation ◻ <br> Ameren Illinois Company ◻

---

| | |
|:---|:---|
| **ITEM 8.01** | **Other Events.** |

---

On January 6, 2023, Ameren Illinois Company ("Ameren Illinois") filed a request with the Illinois Commerce Commission ("ICC") seeking approval to increase its annual revenues for natural gas delivery service by $160 million, which includes an estimated $77 million of annual revenues that would otherwise be recovered under Ameren Illinois' qualifying infrastructure plant rider and other riders. The request is based on a 10.7% return on common equity, a capital structure composed of 54% common equity, and a rate base of $2.9 billion. In an attempt to reduce regulatory lag, Ameren Illinois used a 2024 future test year in this proceeding.

A decision by the ICC in this proceeding is required by early December 2023, with new rates expected to be effective by January 2024. Ameren Illinois cannot predict the level of any delivery service rate change the ICC may approve, nor whether any rate change that may eventually be approved will be sufficient to enable Ameren Illinois to recover its costs and earn a reasonable return on its investments when any rate change goes into effect.

This combined Form 8-K is being filed separately by Ameren Corporation and Ameren Illinois Company (each a "registrant"). Information contained herein relating to any individual registrant has been filed by such registrant on its own behalf. No registrant makes any representation as to information relating to any other registrant.

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, each registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. The signature for each undersigned company shall be deemed to relate only to matters having reference to such company or its subsidiaries.

---

| | |
|:---|:---|
| AMEREN CORPORATION | AMEREN CORPORATION |
| (Registrant) | (Registrant) |
| By: | /s/ Michael L. Moehn |
| Name: | Michael L. Moehn |
| Title: | Executive Vice President and Chief Financial Officer |
| AMEREN ILLINOIS COMPANY | AMEREN ILLINOIS COMPANY |
| (Registrant) | (Registrant) |
| By: | /s/ Leonard P. Singh |
| Name: | Leonard P. Singh |
| Title: | Chairman and President |

---

Date: January 9, 2023