# EDGAR Filing Document

**Accession Number:** 0002039835
**File Stem:** 0002039835-25-000010
**Filing Date:** 2025-10
**Character Count:** 21059
**Document Hash:** 659d2e6fc52feb6b9ece38186b264d55
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002039835-25-000010.hdr.sgml**: 20251010

**ACCESSION NUMBER**: 0002039835-25-000010

**CONFORMED SUBMISSION TYPE**: 10-D

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20251001

**FILED AS OF DATE**: 20251010

**DATE AS OF CHANGE**: 20251010

**ABS ASSET CLASS**: Other

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Ameren Missouri Securitization Funding I, LLC
- **CENTRAL INDEX KEY:** 0002039835
- **STANDARD INDUSTRIAL CLASSIFICATION:** ASSET-BACKED SECURITIES [6189]
- **ORGANIZATION NAME:** Office of Structured Finance
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 10-D
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 333-282616-01
- **FILM NUMBER:** 251387848

**BUSINESS ADDRESS:**
- **STREET 1:** 1901 CHOUTEAU AVENUE
- **CITY:** ST LOUIS
- **STATE:** MO
- **ZIP:** 63103
- **BUSINESS PHONE:** 3146819569

**MAIL ADDRESS:**
- **STREET 1:** 1901 CHOUTEAU AVENUE
- **CITY:** ST LOUIS
- **STATE:** MO
- **ZIP:** 63103

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 10-D**

**ASSET-BACKED ISSUER**

**DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF**

**THE SECURITIES EXCHANGE ACT OF 1934**

**For the semi-annual distribution period from**

**December 20, 2024 to September 30, 2025**

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| | | |
|:---|:---|:---|
| **Commission<br>File Number** | **Exact name of registrant as specified in its charter;<br>State of Incorporation;<br>Address and Telephone Number** | **IRS Employer<br>Identification No.** |
| 333-282616-01 | **Ameren Missouri Securitization Funding I, LLC** | 33-1368847 |

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(Issuing Entity)

(Delaware Corporation)

1901 Chouteau Avenue

St. Louis, Missouri 63103

(314) 621-3222

---

| | | |
|:---|:---|:---|
| 1-2967 | **Union Electric Company** | 43-0559760 |

---

(Depositor and Sponsor)

(Missouri Corporation)

1901 Chouteau Avenue

St. Louis, Missouri 63103

(314) 621-3222

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| | | | | |
|:---|:---|:---|:---|:---|
| | Registered/reporting pursuant to (check one) | Registered/reporting pursuant to (check one) | Registered/reporting pursuant to (check one) | |
| | Section | Section | Section | Name of exchange |
| Title of class | 12(b) | 12(g) | 15(d) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(If Section 12(b)) |
| Series 2024-A Securitized Utility Tariff Bonds | ☐ | ☐ | ☒ | N/A |

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| | | | | |
|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indicate by check mark whether each registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. | Yes | ☒ | No | ☐ |

---

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**PART I – DISTRIBUTION INFORMATION**

**Item 1. Distribution and Pool Performance Information.**

The response to Item 1 is set forth in part herein and in part in Exhibit 99.1.

The record date for distributions described in Exhibit 99.1 is October 1, 2025.

Introductory and explanatory information regarding the material terms, parties, and distributions described in Exhibit 99.1 is included in the Prospectus relating to the Securitization Utility Tariff Bonds, Series 2024-A (the "Securitization Bonds"), dated December 10, 2024, of Ameren Missouri Securitization Funding I, LLC (the "Issuing Entity") filed with the Securities and Exchange Commission pursuant to Rule 424(b)(1) of the Securities Act of 1933 on December 4, 2024, under the depositor's Commission File Number.

As indicated in Exhibit 99.1, all required interest and scheduled principal payments on the Securitization Bonds have been made with respect to the October 1, 2025 distribution date.

**The following Items have been omitted pursuant to General Instruction C of Form 10-D.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Item 1A. Asset-Level Information.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Item 1B. Asset Representations Reviewer and Investor Communication.

**PART II – OTHER INFORMATION**

**Item 2. Legal Proceedings.**

None.

**Item 3. Sale of Securities and Use of Proceeds.**

None.

**The following Items have been omitted pursuant to General Instruction C of Form 10-D:**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Item 4. Defaults Upon Senior Securities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Item 5. Reserved.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Item 6. Significant Obligors of Pool Assets.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Item 7. Change in Sponsor Interest in the Securities.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• Item 8. Significant Enhancement Provider Information.

**Item 9. Other Information.**

None.

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**Item 10. Exhibits**

Exhibits filed here within are designated by an asterisk (\*). All exhibits not so designated are incorporated by reference to a prior filing, as indicated.

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| | |
|:---|:---|
| **Exhibit Number** | **Description** |
| 3.1 | <u>[Certificate of Formation of Ameren Missouri Securitization Funding I, LLC](https://www.sec.gov/Archives/edgar/data/100826/000110465924108058/tm2425884d2_ex3-1.htm)</u> |
| 3.2 | <u>[Amended and Restated Limited Liability Company Agreement of Ameren Missouri Securitization Funding I, LLC, dated as of December 10, 2024](https://www.sec.gov/Archives/edgar/data/2039835/000110465924128044/tm2425884d16_ex3-2.htm)</u> |
| 4.1 | <u>[Indenture between Ameren Missouri Securitization Funding I, LLC and The Bank of New York Mellon Trust Company, N.A., dated as of December 20, 2024](https://www.sec.gov/Archives/edgar/data/2039835/000110465924130764/tm2425884d17_ex4-1.htm)</u> |
| 4.2 | <u>[Series Supplement between Ameren Missouri Securitization Funding I, LLC and The Bank of New York Mellon Trust Company, N.A. (including forms of the Bonds), dated as of December 20, 2024](https://www.sec.gov/Archives/edgar/data/2039835/000110465924130764/tm2425884d17_ex4-2.htm)</u> |
| 10.1 | <u>[Securitized Utility Tariff Property Servicing Agreement between Ameren Missouri Securitization Funding I, LLC and Union Electric Company, as Servicer, dated as of December 20, 2024](https://www.sec.gov/Archives/edgar/data/2039835/000110465924130764/tm2425884d17_ex10-1.htm)</u> |
| 10.2 | <u>[Securitized Utility Tariff Property Purchase and Sale Agreement between Ameren Missouri Securitization Funding I, LLC and Union Electric Company, as Seller, dated as of December 20, 2024](https://www.sec.gov/Archives/edgar/data/2039835/000110465924130764/tm2425884d17_ex10-2.htm)</u> |
| 10.3 | <u>[Administration Agreement between Ameren Missouri Securitization Funding I, LLC and Union Electric Company, as Administrator, dated as of December 20, 2024](https://www.sec.gov/Archives/edgar/data/2039835/000110465924130764/tm2425884d17_ex10-3.htm)</u> |
| 99.1\* | <u>[Semi-annual Servicer's Certificate relating to the Bonds, dated September](mf12025oct10-dxexhibit991.htm)[23](mf12025oct10-dxexhibit991.htm)[, 2025](mf12025oct10-dxexhibit991.htm)</u> |

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**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

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| | | | |
|:---|:---|:---|:---|
| | | Ameren Missouri Securitization Funding I, LLC, as Issuing Entity | Ameren Missouri Securitization Funding I, LLC, as Issuing Entity |
| | | By: | Union Electric Company d/b/a/ Ameren Missouri, as servicer |
| Date: | October 10, 2025 | By: | /s/ Mitchell J. Lansford |
|  |  |  | Mitchell J. Lansford<br>Vice President and Treasurer<br>(Senior officer in charge of servicing function of the servicer) |

---

## Exhibit 99.1

**SEMI-ANNUAL SERVICER'S CERTIFICATE**

Pursuant to Section 4.01(c)(ii) of the Securitized Utility Tariff Property Servicing Agreement, dated as of December 20, 2024 (the "Servicing Agreement"), between, **UNION ELECTRIC COMPANY, D/B/A AMEREN MISSOURI**, a Missouri corporation, as servicer (the "Servicer"), and **AMEREN MISSOURI SECURITIZATION FUNDING I, LLC**, as Issuer (the "Issuer"), the Servicer does hereby certify, for the October 1, 2025, Payment Date (the "Current Payment Date"), as follows:

Capitalized terms used herein have their respective meanings as set forth in the Indenture. References herein to certain sections and subsections are references to the respective sections of the Servicing Agreement or the Indenture, as the context indicates.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | | | Collection Periods: | December 2024 - September 2025 | December 2024 - September 2025 |
| | | | Payment Date: | October 1, 2025 | October 1, 2025 |
| 1. | Collections Allocable and Aggregate Amounts Available for the Current Payment Date: | Collections Allocable and Aggregate Amounts Available for the Current Payment Date: | Collections Allocable and Aggregate Amounts Available for the Current Payment Date: | Collections Allocable and Aggregate Amounts Available for the Current Payment Date: | Collections Allocable and Aggregate Amounts Available for the Current Payment Date: |
|  | Securitized Utility Tariff Charge Remittance | Securitized Utility Tariff Charge Remittance | Securitized Utility Tariff Charge Remittance | Securitized Utility Tariff Charge Remittance | Securitized Utility Tariff Charge Remittance |
|  |  | a. | Estimated Monthly Securitized Utility Tariff Charges Remitted for December 2024 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for December 2024 Collection Period | $— |
|  |  | b. | Estimated Monthly Securitized Utility Tariff Charges Remitted for January 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for January 2025 Collection Period | $955366.83 |
|  |  | c. | Estimated Monthly Securitized Utility Tariff Charges Remitted for February 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for February 2025 Collection Period | $5275986.11 |
|  |  | d. | Estimated Monthly Securitized Utility Tariff Charges Remitted for March 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for March 2025 Collection Period | $6009281.83 |
|  |  | e. | Estimated Monthly Securitized Utility Tariff Charges Remitted for April 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for April 2025 Collection Period | $4779941.36 |
|  |  | f. | Estimated Monthly Securitized Utility Tariff Charges Remitted for May 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for May 2025 Collection Period | $4267161.22 |
|  |  | g. | Estimated Monthly Securitized Utility Tariff Charges Remitted for June 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for June 2025 Collection Period | $4232190.35 |
|  |  | h. | Estimated Monthly Securitized Utility Tariff Charges Remitted for July 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for July 2025 Collection Period | $4978643.21 |
|  |  | i | Estimated Monthly Securitized Utility Tariff Charges Remitted for August 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for August 2025 Collection Period | $6501452.60 |
|  |  | j | Estimated Monthly Securitized Utility Tariff Charges Remitted for September 2025 Collection Period | Estimated Monthly Securitized Utility Tariff Charges Remitted for September 2025 Collection Period | $6110733.63 |
|  | i. | Total Estimated Monthly Securitized Utility Tariff Charge Remittances | Total Estimated Monthly Securitized Utility Tariff Charge Remittances | Total Estimated Monthly Securitized Utility Tariff Charge Remittances | $43110757.14 |
|  | ii. | Investment Earnings on Collection Account | Investment Earnings on Collection Account | Investment Earnings on Collection Account | Investment Earnings on Collection Account |
|  |  | iii. | Investment Earnings on Capital Subaccount | Investment Earnings on Capital Subaccount | $54888.26 |
|  |  | iv. | Investment Earnings on Excess Funds Subaccount | Investment Earnings on Excess Funds Subaccount | $— |
|  |  | v. | Investment Earnings on General Subaccount | Investment Earnings on General Subaccount | $340583.97 |
|  | vi. | General Subaccount Balance (sum of i through v above) | General Subaccount Balance (sum of i through v above) | General Subaccount Balance (sum of i through v above) | $43506229.37 |
|  | vii. | Excess Funds Subaccount Balance as of Prior Payment Date | Excess Funds Subaccount Balance as of Prior Payment Date | Excess Funds Subaccount Balance as of Prior Payment Date | $— |
|  | viii. | Capital Subaccount Balance as of Prior Payment Date | Capital Subaccount Balance as of Prior Payment Date | Capital Subaccount Balance as of Prior Payment Date | $2380605.00 |
|  | ix. | Collection Account Balance (sum of vi through viii above) | Collection Account Balance (sum of vi through viii above) | Collection Account Balance (sum of vi through viii above) | $45886834.37 |
| 2. | Outstanding Amounts as of Prior Payment Date: | Outstanding Amounts as of Prior Payment Date: | Outstanding Amounts as of Prior Payment Date: | Outstanding Amounts as of Prior Payment Date: | Outstanding Amounts as of Prior Payment Date: |
|  | i. | Tranche A-1 Outstanding Principal Amount | Tranche A-1 Outstanding Principal Amount | Tranche A-1 Outstanding Principal Amount | $476121000.00 |

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| 3. | Required Funding/Payments as of Current Payment Date (4.i through 4.x): | Required Funding/Payments as of Current Payment Date (4.i through 4.x): | Required Funding/Payments as of Current Payment Date (4.i through 4.x): | Required Funding/Payments as of Current Payment Date (4.i through 4.x): | Required Funding/Payments as of Current Payment Date (4.i through 4.x): | $35911002.62 |
|  | <u>Principal</u> | <u>Principal</u> |  |  |  | <u>Principal Due</u> |
|  | i. | Tranche A-1 | Tranche A-1 | Tranche A-1 | Tranche A-1 | $17384423.00 |
|  | <u>Interest Tranche</u> | <u>Interest Tranche</u> | <u>Interest Rate</u> | <u>Days in Interest Period</u><sup>1</sup> | <u>Principal Balance</u> | <u>Interest Due</u> |
|  | ii. | Tranche A-1 | 4.85% | 281 | 476121000.00 | $18024486.25 |
|  |  |  |  |  | <u>Required Level</u> | <u>Funding Required</u> |
|  | iii. | Capital Subaccount | Capital Subaccount | Capital Subaccount | 2380605.00 | $— |
| 4. | Allocation of Remittances as of Current Payment Date Pursuant to 8.02(e) of Indenture | Allocation of Remittances as of Current Payment Date Pursuant to 8.02(e) of Indenture | Allocation of Remittances as of Current Payment Date Pursuant to 8.02(e) of Indenture | Allocation of Remittances as of Current Payment Date Pursuant to 8.02(e) of Indenture | Allocation of Remittances as of Current Payment Date Pursuant to 8.02(e) of Indenture |  |
|  | i. | Indenture Trustee Fees and Expenses; Indemnity Amounts (subject to $200,000 cap per annum) | Indenture Trustee Fees and Expenses; Indemnity Amounts (subject to $200,000 cap per annum) | Indenture Trustee Fees and Expenses; Indemnity Amounts (subject to $200,000 cap per annum) | Indenture Trustee Fees and Expenses; Indemnity Amounts (subject to $200,000 cap per annum) | $7500.00 |
|  | ii. | Servicing Fee | Servicing Fee | Servicing Fee | Servicing Fee | $178545.38 |
|  | iii. | Administration Fee | Administration Fee | Administration Fee | Administration Fee | $37500.00 |
|  | iv. | Other Ongoing Financing Costs Expenses (Excluding Income Taxes) | Other Ongoing Financing Costs Expenses (Excluding Income Taxes) | Other Ongoing Financing Costs Expenses (Excluding Income Taxes) | Other Ongoing Financing Costs Expenses (Excluding Income Taxes) | $156780.04 |
|  | v. | Semi-Annual Interest (including any past-due for prior periods) | Semi-Annual Interest (including any past-due for prior periods) | Semi-Annual Interest (including any past-due for prior periods) | Semi-Annual Interest (including any past-due for prior periods) | $18024486.25 |
|  | <u>Interest by Tranche</u> | <u>Interest by Tranche</u> |  | <u>Aggregate</u> | <u>Per $1000 of Original Principal Amount</u> |  |
|  |  | a. Tranche A-1 Interest Payment | a. Tranche A-1 Interest Payment | $18024486.25 | $37.86 |  |
|  | vi. | Principal Due and Payable as a Result of an Event of Default or on Final Maturity Date | Principal Due and Payable as a Result of an Event of Default or on Final Maturity Date | Principal Due and Payable as a Result of an Event of Default or on Final Maturity Date | Principal Due and Payable as a Result of an Event of Default or on Final Maturity Date | $— |
|  | vii. | Semi-Annual Principal | Semi-Annual Principal | Semi-Annual Principal | Semi-Annual Principal | $17384423.00 |
|  | <u>Principal by Tranche</u> | <u>Principal by Tranche</u> |  | <u>Aggregate</u> | <u>Per $1000 of Original Principal Amount</u> |  |
|  |  | a. Tranche A-1 Principal Payment | a. Tranche A-1 Principal Payment | $17384423.00 | $36.51 |  |
|  | viii. | Other Ongoing Financing Costs, Income Taxes | Other Ongoing Financing Costs, Income Taxes | Other Ongoing Financing Costs, Income Taxes | Other Ongoing Financing Costs, Income Taxes | $— |
|  | ix. | Amount by which Required Capital Level Exceeds Capital Subaccount | Amount by which Required Capital Level Exceeds Capital Subaccount | Amount by which Required Capital Level Exceeds Capital Subaccount | Amount by which Required Capital Level Exceeds Capital Subaccount | $— |
|  | x. | Return on Ameren Missouri Capital Contribution | Return on Ameren Missouri Capital Contribution | Return on Ameren Missouri Capital Contribution | Return on Ameren Missouri Capital Contribution | $121767.95 |
|  | xi. | Deposit to Excess Funds Subaccount | Deposit to Excess Funds Subaccount | Deposit to Excess Funds Subaccount | Deposit to Excess Funds Subaccount | $7595226.75 |
|  | xii. | Released to Issuer Upon Retirement of All Notes | Released to Issuer Upon Retirement of All Notes | Released to Issuer Upon Retirement of All Notes | Released to Issuer Upon Retirement of All Notes | $— |
|  | xiii. | Aggregate Remittances as of Current Payment Date | Aggregate Remittances as of Current Payment Date | Aggregate Remittances as of Current Payment Date | Aggregate Remittances as of Current Payment Date | $43506229.37 |

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| | | | |
|:---|:---|:---|:---|
| 5. | Subaccount Withdrawals as of Current Payment Date (if applicable, pursuant to Section 8.02(e) of Indenture): | Subaccount Withdrawals as of Current Payment Date (if applicable, pursuant to Section 8.02(e) of Indenture): | Subaccount Withdrawals as of Current Payment Date (if applicable, pursuant to Section 8.02(e) of Indenture): |
|  | i. | Excess Funds Subaccount | $— |
|  | ii. | Capital Subaccount | $— |
|  | iii. | Total Withdrawals | $— |
| 6. | Outstanding Amount and Collection Account Balance as of Current Payment Date (after giving effect to payments to be made on such Payment Date): | Outstanding Amount and Collection Account Balance as of Current Payment Date (after giving effect to payments to be made on such Payment Date): | Outstanding Amount and Collection Account Balance as of Current Payment Date (after giving effect to payments to be made on such Payment Date): |
|  | i. | Tranche A-1 | $458736577.00 |
|  | ii. | Excess Funds Subaccount Balance including Investment Earnings | $7595226.75 |
|  | iii. | Capital Subaccount Balance | $2380605.00 |
|  | iv. | Aggregate Collection Account Balance | $9975831.75 |
| 7. | Shortfalls in Interest and Principal Payments as of Current Payment Date | Shortfalls in Interest and Principal Payments as of Current Payment Date |  |
|  | i. | Semi-Annual Interest |  |
|  |  | Tranche A-1 | $— |
|  | ii. | Semi-Annual Principal |  |
|  |  | Tranche A-1 | $— |
| 8. | Shortfalls in Required Subaccount Levels as of Current Payment Date | Shortfalls in Required Subaccount Levels as of Current Payment Date |  |
|  | i. | Capital Subaccount | $— |
|  | <sup>1</sup> On 30/360 day basis for initial payment date; otherwise use one-half of annual rate. | <sup>1</sup> On 30/360 day basis for initial payment date; otherwise use one-half of annual rate. |  |

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**IN WITNESS WHEREOF**, the undersigned has duly executed and delivered this Semi-Annual Servicer's Certificate.

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| | |
|:---|:---|
| **SERVICER:** | **SERVICER:** |
| Union Electric Company d/b/a/ Ameren Missouri, a Missouri corporation | Union Electric Company d/b/a/ Ameren Missouri, a Missouri corporation |
| /s/ Mitchell J. Lansford | /s/ Mitchell J. Lansford |
| Name: <br>Title:<br>Date: | Mitchell J. Lansford<br>Vice President and Treasurer<br>September 23, 2025 |

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<br>