Ameren (AEE) 11-K Annual report of employee stock purchases

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 11-K

☒ ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2019

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                     to                     

COMMISSION FILE NUMBER 1-14756

A. Full title of the plan and the address of the plan, if different from that of the issuer named below:

AMEREN CORPORATION

SAVINGS INVESTMENT PLAN

B. Name of issuer of securities held pursuant to the plan and the address of its principal executive office:

Ameren Corporation

1901 Chouteau Avenue

St. Louis, Missouri 63103

Ameren Corporation

Savings Investment Plan

Financial Statements and Supplemental Schedule

December 31, 2019 and 2018

Ameren Corporation

Savings Investment Plan

Index

Report of Independent Registered Public Accounting Firm December 31, 2019 and 2018	1-2
Financial Statements
Statements of Net Assets Available for Benefits December 31, 2019 and 2018	3
Statements of Changes in Net Assets Available for Benefits Years Ended December 31, 2019 and 2018	4
Notes to Financial Statements December 31, 2019 and 2018	5-16
Supplemental Schedule*
Schedule H, Line 4i - Schedule of Assets (Held at End of Year) December 31, 2019	1-7

* Other schedules required by 29 CFR 2520.103-10 of the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended, have been omitted because they are not applicable.

	Crowe LLP Independent Member Crowe Global

Report of Independent Registered Public Accounting Firm

Plan Participants and Plan Administrator of the Ameren Corporation Savings Investment Plan St. Louis, Missouri

Opinion on the Financial Statements

We have audited the accompanying statements of net assets available for benefits of Ameren Corporation Savings Investment Plan (the “Plan”) as of December 31, 2019 and 2018, the related statements of changes in net assets available for benefits for the years then ended, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the net assets available for benefits of the Plan as of December 31, 2019 and 2018, and the changes in net assets available for benefits for the years then ended, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on the Plan’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Plan in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Plan’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Supplemental Information

The supplemental Schedule H, Line 4i – Schedule of Assets (Held at End of Year) as of December 31, 2019 has been subjected to audit procedures performed in conjunction with the audit of Ameren Corporation Savings Investment Plan’s financial statements. The supplemental schedule is the responsibility of the Plan’s management. Our audit procedures included determining whether the information presented in the supplemental schedule reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental schedule. In forming our opinion on the supplemental schedule, we evaluated whether the supplemental schedule, including its form and content, is presented in conformity with the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. In our opinion, the supplemental schedule is fairly stated in all material respects in relation to the financial statements as a whole.

/s/ Crowe LLP

Crowe LLP

We have served as the Plan’s auditor since 2014.

Oak Brook, Illinois

June 25, 2020

Ameren Corporation

Savings Investment Plan

Statements of Net Assets Available for Benefits

December 31, 2019 and 2018

	2019		2018
Assets
Investments, at fair value	$	2,372,801,088	$	1,970,933,349
Investments, at contract value		289,817,950		282,384,897
Total investments		2,662,619,038		2,253,318,246
Cash		68,815		1,080,838
Receivables
Notes receivable from participants		35,354,528		35,198,455
Participant contributions		2,983,387		1,272,482
Employer contributions		520,380		398,933
Dividends and interest		472,218		669,912
Due from brokers for securities sold		5,383,142		10,024,762
Total receivables		44,713,655		47,564,544
Total assets		2,707,401,508		2,301,963,628
Liabilities
Accrued expenses		626,534		1,184,287
Due to brokers for securities purchased		2,119,021		11,350,970
Total liabilities		2,745,555		12,535,257
Net assets available for benefits	$	2,704,655,953	$	2,289,428,371

The accompanying notes are an integral part of these financial statements.

3

Ameren Corporation

Savings Investment Plan

Statements of Changes in Net Assets Available for Benefits

Years Ended December 31, 2019 and 2018

	2019		2018
Additions:
Investment income
Interest and dividends	$	24,794,772	$	31,859,694
Net appreciation / (depreciation) in fair value of investments		455,371,217		(105,760,604	)
Total investment income / (loss)		480,165,989		(73,900,910	)
Interest on notes receivable from participants		1,775,255		1,636,381
Participant contributions		105,448,706		96,904,377
Employer contributions		34,939,878		32,747,626
Total additions		622,329,828		57,387,474
Deductions:
Benefits paid to participants		203,601,534		181,663,074
Administrative expenses		3,500,712		4,022,410
Total deductions		207,102,246		185,685,484
Net increase / (decrease)		415,227,582		(128,298,010	)
Net assets available for benefits
Beginning of year		2,289,428,371		2,417,726,381
End of year	$	2,704,655,953	$	2,289,428,371

The accompanying notes are an integral part of these financial statements.

4

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

1. Description of the Plan

General

The following is a summary of the various provisions of the Ameren Corporation Savings Investment Plan (the “Plan”). Participants should refer to the Summary Plan Document for more complete information.

The Plan is a defined contribution plan. Its purpose is to provide employees eligible to participate (the “Participants”) of Ameren Corporation (the “Company”) and its wholly owned subsidiaries the opportunity to defer a portion of their compensation for federal income tax purposes in accordance with Section 401(k) of the Internal Revenue Code (the “Code”). The Plan is subject to certain provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”), as amended, and regulations of the Securities and Exchange Commission.

The Company serves as sponsor of the Plan, and, consequently, has the authority to amend or terminate the Plan subject to certain restrictions. The Ameren Administrative Committee has the authority and responsibility for the general administration of the Plan. Fidelity Management Trust Company, as Trustee, has the authority and responsibility to hold and protect the assets of the Plan in accordance with Plan provisions and with the Trust and Administrative Agreement.

Participation

All regular full-time employees are eligible to participate upon employment, and part-time or temporary employees are eligible to participate upon completion of a year of service of at least 1,000 hours. Employees covered by a collective bargaining agreement (“CBA”) are eligible to participate only if the CBA provides for such participation.

If employees do not make an election, nor opt-out within 30 days of employment; they are automatically enrolled at a 6% pre-tax contribution rate, invested in a Target Date fund based upon the date at which the participant is or will be age 65, and further enrolled in auto-escalation increasing their pre-tax contribution 1% annually, with no cap on the annual increases. Employees may opt-out or make alternative elections at any time.

Contributions

Each year, Participants may contribute up to 100% of eligible compensation, as defined in the Plan, and subject to annual limitations imposed by the Code.

The Company makes an Employer Basic Matching Contribution plus an Employer Additional Matching Contribution in an amount equal to a percent of the amount each Participant contributes to the Plan, up to a certain maximum percentage of the Participant’s compensation that he or she elects to contribute to the Plan each year. The amount of Company matching contribution depends on the Participant’s employment classification, and for contract employees is determined by the collective bargaining agreement with the specific union representing the Participants. The Company also makes true-up Employer Basic Matching Contributions for Participants who contribute the IRS maximum before the end of the year and, as a result, do not receive the full company match. The Employer Additional Matching Contributions are invested in the Ameren Stock Fund.

5

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

The Plan permits “catch-up” contributions for all employees age 50 and older. Eligible employees could contribute $6,000 in 2019 and 2018, as a “catch-up” contribution. The Company does not match “catch-up” contributions.

Participants direct the investment of their contributions and the Employer Basic Matching Contributions to his or her account to any of the investment options available under the Plan, including Company stock. Contributions may be allocated to a single investment option or allocated in increments of one percent to any combination of investment options. Such elections may be changed daily. Although the Employer Additional Matching Contributions are invested in the Ameren Stock Fund, they may be immediately reallocated to other funds at the participants’ discretion.

Earnings derived from the assets of any investment fund are reinvested in the fund to which they relate. Participants may elect daily to reallocate, by actual dollar or percentage in one percent increments, the value of their accounts between funds. Pending investment of the assets into any investment fund, the Trustee may temporarily make certain short-term investments.

Participant Accounts

Each Participant’s account is credited with the Participant’s contributions and an allocation of (a) the Company’s contributions, and (b) Plan earnings, and is charged with an allocation of administrative expenses. Allocations are based on Participant contributions, eligible compensation, Participant account balances, or specific Participant transactions, as defined. The benefit to which the Participant is entitled is the benefit which can be provided from the Participant’s account. Each Participant directs the investment of his or her account to any of the investment options available under the Plan. Effective September 1, 2019, the Plan was amended to impose certain restrictions on participant directed investments into the Ameren Stock Fund.

Notes Receivable from Participants

The Plan permits Participants to borrow from their accounts within the Plan. Such borrowings may be made subject to the following: (1) the minimum amount of the loan is $1,000, (2) the amount of the loan may not exceed the lesser of $50,000 or 50% of the vested amount in the Participant’s account, (3) the loan will bear a fixed interest rate and repayments will be made through mutual agreement subject to certain statutory repayment time limits, (4) each loan shall bear a reasonable interest rate as determined under policies established for the Plan and (5) such other rules and regulations as may be adopted by the Company. At December 31, 2019 and 2018, the interest rates on participant loans ranged from 4.00 percent to 10.50 percent.

Vesting

The amounts in Participants’ accounts, including Company contributions, are fully vested at all times.

Payment of Benefits

The total amount of a Participant’s account shall be distributed to the Participant according to one of the options as described in the Plan document and as elected by the Participant after termination of employment. All distributions shall be in the form of cash except that Participants may elect to have his or her interest in the Ameren Stock Fund distributed in shares of Ameren common stock. Participants may withdraw certain basic contributions, rollover contributions and related earnings

6

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

thereon upon reaching age 59 1/2, in the event of total disability or financial hardship as defined by the Plan or the Code. For purposes of distributions, the Participant’s account value will be determined as of the last business day coincident with or immediately preceding the day of distribution. Contributions to the Plan and investment income thereon are taxable to Participants upon distribution pursuant to the rules provided for under the Plan and the Code.

The Plan also allows, at the discretion of the Company, participants of the former Union Electric Company Employee Stock Ownership Plan and the former Ameren Corporation Employee Stock Ownership Plan for Certain Employees of AmerenCIPS, to receive certain distributions prior to termination of employment.

Plan Termination

The Company intends to continue the Plan indefinitely. However, the Company may at any time and for any reason, subject to ERISA and Internal Revenue Service regulations, suspend or terminate the Plan provided that such action does not retroactively adversely affect the rights of any Participant under the Plan.

2. Summary of Significant Accounting Policies

Basis of Accounting

The accompanying financial statements of the Plan are prepared on the accrual basis of accounting, except that benefit payments to Participants are recorded upon distribution.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of changes in net assets available for benefits during the reporting period. Actual results could differ from those estimates.

Investment Valuation and Income Recognition

All investments are presented at fair value, except for fully benefit-responsive investment contracts, which are reported at contract value, as of December 31, 2019 and 2018. Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. See Note 3 for discussion of fair value measurements.

The Plan has direct investments in fully benefit-responsive investment contracts. Investments held by a defined contribution plan are required to be reported at fair value, except for fully benefit-responsive investment contracts. Contract value is the relevant measurement attribute for the portion of the net assets available for benefits of a defined contribution plan attributable to fully benefit-responsive investment contracts because contract value is the amount Participants normally would receive if they were to initiate permitted transactions under the terms of the Plan. Contract value represents contributions made under each contract, plus earnings, less participant withdrawals and administrative expenses.

7

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

Purchases and sales of securities are recorded on a trade date basis. Interest income is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date. Net appreciation (depreciation) in fair value of investments includes the Plan’s gains and losses on investments bought and sold as well as held during the year.

Notes Receivable from Participants

Notes receivable from Participants are measured at their unpaid principal balance plus any accrued but unpaid interest, with no allowance for credit losses, as repayments of principal and interest are received through payroll deductions and the notes are collateralized by the Participants’ account balances. Delinquent participant loans are reclassified as distributions based upon the terms of the Plan document.

Administrative Expenses

Fees associated with administering the Plan are generally paid by the Plan. Trustee and recordkeeping fees are primarily paid via (1) flat dollar fees that are assessed to all Participants quarterly, and (2) fees accrued in investment funds that are separately-managed accounts (versus commingled funds). Also, revenue sharing payments that Fidelity receives from mutual funds are allocated to Participant accounts quarterly.

Risks and Uncertainties

Investments are exposed to various risks, such as interest rate, market and credit. Due to the level of risk associated with certain investments and the level of uncertainty related to changes in the value of investments, it is at least reasonably possible that changes in risks in the near term could materially affect the Participants’ account balances and the amounts reported in the Statement of Net Assets Available for Benefits.

Concentrations

Company common stock comprised 13% of investments at December 31, 2019 and 2018.

3. Fair Value Measurements

The authoritative guidance issued by the Financial Accounting Standards Board (the “FASB”) regarding fair value measurement provides a framework for measuring fair value for all assets and liabilities that are measured and reported at fair value. The guidance defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Certain assumptions that market participants would use in pricing the asset or liability, including assumptions about risk or the risks inherent in the inputs to the valuation, were used in the valuation process. Inputs to valuation can be readily observable, market corroborated, or unobservable. Valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs were used. The provisions also establish a fair value hierarchy that prioritizes the inputs used to measure fair value. All financial assets and liabilities carried at fair value were classified in one of the following three hierarchy levels:

Level 1: Inputs based on quoted prices in active markets for identical assets or liabilities that the Plan has the ability to access at the reporting date.

8

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

Level 2: Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. Inputs to the valuation methodology include:

• Quoted prices for similar assets or liabilities in active markets;

• Quoted prices for identical or similar assets or liabilities in inactive markets;

• Inputs other than quoted prices that are observable for the asset or liability;

• Inputs that are derived principally from or corroborated by observable market data by correlation or other means.

Level 3: Inputs to the valuation methodology that are unobservable and significant to the fair value measurement.

The Plan does not hold any investments requiring Level 3 measurements, and there have not been any transfers between measurement input levels in 2019 or 2018.

The asset or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

Following is a description of the valuation methodologies used for assets measured at fair value.

There have been no changes in the methodologies used during 2019.

• Margin deposit account: The fair value is estimated to approximate deposit account balances, payable on demand, as no discounts for credit quality or liquidity were determined to be applicable (Level 2 inputs).

• Common stocks: Valued at the closing price reported on the active markets on which the individual securities are traded (Level 1 inputs).

• U.S. government securities and corporate debt securities: Valued based upon recent bid prices or the average of recent bid and asked prices when available (Level 2 inputs) and, if not available, they are valued through matrix pricing models developed by sources considered by management to be reliable. Matrix pricing, which is a mathematical technique commonly used to price debt securities that are not actively traded, values debt securities without relying exclusively on quoted prices for the specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2 inputs).

• Other debt securities includes non-U.S. government debt securities, municipal securities, mortgage and asset-backed securities, and derivatives: Non-U.S. government debt securities, municipal securities, and mortgage and asset-backed securities are valued based upon recent bid prices or the average of recent bid and asked prices when available (Level 2 inputs) and, if not available, they are valued through matrix pricing models developed by sources considered by management to be reliable. Matrix pricing, which is a mathematical technique commonly used to price debt securities that are not actively traded, values debt securities without relying exclusively on quoted prices for the specific securities but rather

9

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

by relying on the securities’ relationship to other benchmark quoted securities (Level 2 inputs). The fair values of exchange-traded derivatives are based upon quoted market prices (Level 1 inputs). The fair values of derivatives that are not traded on an exchange are based upon valuation models using observable market data as of the measurement date (Level 2 inputs).

• Mutual funds: Valued at the daily closing price as reported by the fund (Level 1 inputs). Mutual funds held by the Plan are open-end mutual funds that are registered with the Securities and Exchange Commission. These funds are required to publish their daily net asset value (NAV) and to transact at that price. The mutual funds held by the Plan are deemed to be actively traded.

• Collective trust funds: The fair values of participation units held in collective trusts are based on the NAV reported by the fund managers as of the financial statement dates and recent transaction prices. Under ordinary market conditions, redemptions of investments in collective trusts are permitted as of daily or monthly valuation dates, as applicable, and are executed at NAV as a practical expedient.

The following table sets forth, by level within the fair value hierarchy, Plan assets measured at fair value on a recurring basis as of December 31, 2019:

	Quoted Prices In Active Markets for Identified Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Measured at Net Asset Value as a Practical Expedient (a)		Total
Assets
Common stocks-Plan sponsor stock	$	340,199,808	$	—	$	—	$	340,199,808
Common stocks-other than Plan sponsor stock		339,123,849		—		—		339,123,849
Collective trust funds		—		—		1,478,897,102		1,478,897,102
Mutual funds		214,580,329		—		—		214,580,329
Total assets reported at fair value	$	893,903,986	$	—	$	1,478,897,102	$	2,372,801,088

(a) In accordance with accounting guidance, certain investments measured at NAV per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy. The fair value amount measured at NAV presented in this table is intended to permit reconciliation of the fair value hierarchy to the investments at fair value presented in the statement of net assets available for benefits.

10

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

The following table sets forth, by level within the fair value hierarchy, Plan assets measured at fair value on a recurring basis as of December 31, 2018:

	Quoted Prices			Significant		Measured
	In Active			Other		at Net Asset
	Markets for			Observable		Value as a
	Identified Assets			Inputs		Practical
	(Level 1)			(Level 2)		Expedient (a)		��	Total
Assets
Margin deposit account	$	—		$	18,500	$	—		$	18,500
Common stocks-Plan sponsor stock		303,608,665			—		—			303,608,665
Common stocks-other than Plan sponsor stock		267,746,608			—		—			267,746,608
U.S. Government securities		—			14,618,392		—			14,618,392
Corporate debt securities		—			23,502,146		—			23,502,146
Other debt securities		8,875			10,634,373		—			10,643,248
Collective trust funds		—			—		1,182,140,363			1,182,140,363
Mutual funds		168,673,474			—		—			168,673,474
Liabilities
Other debt securities		(18,047	)		—		—			(18,047	)
Total assets reported at fair value	$	740,019,575		$	48,773,411	$	1,182,140,363		$	1,970,933,349

(a) In accordance with accounting guidance, certain investments measured at NAV per share (or its equivalent) as a practical expedient have not been classified in the fair value hierarchy. The fair value amount measured at NAV presented in this table is intended to permit reconciliation of the fair value hierarchy to the investments at fair value presented in the statement of net assets available for benefits.

4. Fully Benefit-Responsive Investment Contracts

The Plan holds investments in a separately-managed stable value account that is managed by Galliard Capital Management. The separately-managed account holds (1) an investment in the Wells Fargo/BlackRock Short Term Investment Fund, and (2) a portfolio of investment contracts, valued at $289,817,950 at December 31, 2019. The separately-managed account held (1) an investment in the Wells Fargo/BlackRock Short Term Investment Fund, and (2) a portfolio of investment contracts, valued at $282,384,897 at December 31, 2018. The investment contracts meet the fully benefit-responsive investment criteria and therefore are reported at contract value. Contract value is the relevant measure for fully benefit-responsive investment contracts because this is the amount received by Participants if they were to initiate permitted transactions under the terms of the Plan. Contract value represents contributions made under each contract, plus earnings, less participant withdrawals and administrative expenses.

The investment contracts (also referred to herein as “wrapper contracts”) are issued by the following insurance companies (also referred to herein as “contract issuer(s)”):

• American General Life Insurance Company (“AGL”)

• Prudential Insurance Company of America (“Prudential”)

• Transamerica Premier Life Insurance Company (“Transamerica”)

• Voya Retirement Insurance and Annuity Company (“Voya”)

• Massachusetts Mutual Life Insurance Company (“Mass Mutual”)

• Metropolitan Life Insurance Company (“Met Life”)

11

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

Effective July 19, 2019, the Prudential contract was terminated and replaced with the Transamerica contract. The underlying investments of the AGL, Mass Mutual, Transamerica, and Voya contracts are holdings in collective trust funds. The underlying investments of Met Life contracts are holdings in commingled portfolios of fixed income securities, which are segregated from the insurance company’s general account assets. The segregation of these assets from the insurance company’s general account offers certain protections to mitigate the risk that these assets might be subject to creditor claims other than those of the separate account guaranteed investment contract owners.

The investment contracts include wrapper contracts, which are agreements for the contract issuer to make payments to the Plan under certain circumstances. The wrapper contracts typically include certain conditions and limitations on the underlying assets owned by the Plan. The wrapper contracts are designed to accrue interest based on crediting rates calculated under the terms of the wrapper contracts, and also provide a guarantee that the crediting rate will not fall below zero percent. Cash flow volatility (for example, timing of benefit payments) as well as asset underperformance are passed through to the Plan through adjustments to future wrapper contract crediting rates. Formulas are provided in each contract that adjusts renewal crediting rates to recognize the difference between the fair value of the underlying assets and the contract value. Crediting rates are reset at least quarterly.

The Plan’s ability to receive amounts due in accordance with fully benefit-responsive investment contracts is dependent on the third-party contract issuer’s ability to meet its financial obligations. The contract issuer’s ability to meet its contractual obligations may be affected by future economic and regulatory developments.

Certain events might limit the ability of the Plan to transact at contract value. Investment contracts generally provide for withdrawals associated with certain events which are not in the ordinary course of operations. These withdrawals may be paid with a market value adjustment applied to the withdrawal as defined in the investment contract. Each contract issuer specifies the events which may trigger a market value adjustment; such events may include all or a portion of the following:

• material amendments to the Plan’s structure or administration;

• changes to the Plan’s competing investment options including the elimination of equity wash provisions;

• complete or partial termination of the stable value account, including a merger with another investment account;

• the failure of the Plan to qualify for exemption from federal income taxes or any required prohibited transaction exemption under ERISA;

• the redemption of all or a portion of the stable value account held by a participating plan at the direction of the participating plan sponsor, including withdrawals due to the removal of a specifically identifiable group of employees from coverage under the participating plan (such as a group layoff or early retirement incentive program), the closing or sale of a subsidiary, employing unit, or affiliate, the bankruptcy or insolvency of a Plan sponsor, the merger of the Plan with another plan, or the Plan sponsor’s establishment of another tax qualified defined contribution plan;

12

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

• any change in law, regulation, ruling, administrative or judicial position, or accounting requirement, applicable to the stable value account or participating plans;

• the delivery of any communication to Participants designed to influence a participant’s decision to stop investing in this investment option;

• the addition of an Asset Allocation or Managed Account service without prior approval of the contract issuer, or a material change in such service.

No events are probable of occurring that might limit the ability of the Plan to transact at contract value on behalf of the Participants.

These investment contracts are evergreen contracts and contain termination provisions, allowing the contract issuer to terminate with notice, at any time at fair value, and providing for automatic termination of the investment contract if the contract value or the fair value of the underlying portfolio equals zero. The contract issuer is obligated to pay the excess contract value when the fair value is below contract value at the time of termination and termination was caused by certain events including fraud or misconduct related to the investment contracts, such as material misrepresentations. In addition, if the Plan defaults in its obligations under the investment contract (including the contract issuer’s determination that the agreement constitutes a non-exempt prohibited transaction as defined under ERISA), and such default is not corrected within the time permitted by the investment contract, then the investment contract may be terminated by the contract issuer and the Plan will receive the fair value as of the date of termination.

5. Transactions with Parties-in-Interest

Parties-in-interest are defined under Department of Labor regulations as any fiduciary of the Plan, any party rendering service to the Plan, the employer, and certain others.

At December 31, 2019, the Plan held 4,429,685 shares of Company common stock with a cost and fair value of $203,080,936 and $340,199,808, respectively. During 2019, the Plan purchased 424,595 shares at a cost of $30,789,037 and sold 649,343 shares valued at $47,491,507.

At December 31, 2018, the Plan held 4,654,433 shares of Company common stock with a cost and fair value of $201,110,751 and $303,608,665, respectively. During 2018, the Plan purchased 785,010 shares at a cost of $45,870,778 and sold 931,272 shares valued at $55,517,075.

Dividend income from Company common stock was $8,622,071 and $8,728,952 for the years ended December 31, 2019 and December 31, 2018, respectively.

At December 31, 2019 and December 31, 2018, the Plan held shares in the Fidelity Institutional Money Market Government Portfolio. This portfolio is managed by the Trustee, and therefore, qualifies as party-in-interest transactions. Notes receivable from Participants also reflect party-in-interest transactions.

Fees paid by the Plan to the Trustee for recordkeeping, trust services, and advisory services were $1,443,432 and $1,085,431 for the years ended December 31, 2019 and December 31, 2018, respectively.

13

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

Fees paid to and investments issued by various Plan investment managers also reflect party-in-interest transactions.

These transactions are allowable party-in-interest transactions under Section 408(b)(8) of ERISA.

14

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

6. Reconciliation of Financial Statements to Form 5500

The following is a reconciliation of net assets available for benefits per the financial statements to the Form 5500 at December 31, 2019 and 2018:

	2019			2018
Net assets available for benefits per the financial statements	$	2,704,655,953		$	2,289,428,371
Amounts allocated to deemed distributions of notes receivable from Participants		(1,736,193	)		(1,559,560	)
Adjustment from contract value to fair value for fully benefit-responsive investment contracts		3,683,181			(3,147,180	)
Net assets available for benefits per the Form 5500	$	2,706,602,941		$	2,284,721,631

Deemed distributions of notes receivable from Participants, resulting from defaults of notes receivable from Participants, are no longer considered assets of the Plan with respect to Form 5500 filings.

The following is a reconciliation of net increase in net assets available for benefits per the financial statements to net income per the Form 5500 for the year ended December 31, 2019:

Net increase in net assets available for benefits per the financial statements	$	415,227,582
Adjustment from contract value to fair value for fully benefit-responsive investment contracts as of the current year-end		3,683,181
Adjustment from contract value to fair value for fully benefit-responsive investment contracts as of the prior year-end		3,147,180
Less: Net increase in defaulted notes receivable from Participants		(58,050	)
Less: Interest income of defaulted notes receivable from Participants		(118,583	)
Total net income per the Form 5500	$	421,881,310

7. Federal Income Tax Status

The Company obtained a determination letter dated January 12, 2018, in which the Internal Revenue Service stated that the Plan was in compliance with the applicable requirements of the Code. Although the Plan has been amended since receiving this determination letter, the Plan’s administrator believes that the Plan is designed and is currently being operated in compliance with the applicable requirements of the Code.

Accounting principles generally accepted in the United States of America require Plan management to evaluate tax positions taken by the Plan and recognize a tax liability (or asset) if the Plan has taken an uncertain position that more likely than not would not be sustained upon examination by the Internal Revenue Service. The Plan administrator has analyzed the tax positions taken by the Plan, and has concluded that as of December 31, 2019 and 2018, there are no uncertain positions taken or expected to be taken that would require recognition of a liability (or asset) or disclosure in the financial statements. The Plan is subject to routine audits by taxing jurisdictions; however, there are currently no audits for any tax periods in progress. The Plan administrator believes it is no longer subject to income tax examinations for years prior to 2016.

15

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2019 and 2018

8. Subsequent Events

Effective January 1, 2020, the Plan was amended such that any shares of Company stock for which voting instructions are not received by a Participant shall be voted by the Trustee in the same proportion as the shares of Company stock for which instructions received bear to the total number of Company stock allocated to Participant accounts.

The Setting Every Community Up for Retirement Enhancement (SECURE) Act was enacted in December 2019 and most provisions in the law became effective January 1, 2020. In compliance with the law, Company adopted the provision which affects distributions to former employees. Effective for participants who turn age 70 ¹⁄₂ after December 31, 2019, the Company will make required minimum distributions (RMDs) no later than April 1 in the year after the participant reaches the age of 72. The Company is continuing to review all other provisions of the SECURE Act.

In December 2019, a novel strain of coronavirus (“COVID-19”) was reported in Wuhan, China. On January 30, 2020, COVID-19 was declared a Public Health Emergency of International Concern by the World Health Organization. In response to COVID-19, the Coronavirus Aid, Relief, and Economic Security (CARES) Act was enacted on March 27, 2020. In compliance with the law, the Company has temporarily suspended RMDs for 2020. The Company is continuing to review all other provisions of the CARES Act.

As a result of the spread of COVID-19 in 2020, economic uncertainties have arisen, which have caused significant volatility in the markets. This is a rapidly evolving situation, which has disrupted economic activity and caused economic uncertainties. These disruptions could continue for a prolonged period of time or become more severe, which may negatively affect the financial results and cash flows of the Plan. The Company is continuing to monitor developments with respect to the global outbreak of COVID-19 and cannot predict the extent or duration of the outbreak or its ultimate financial impact on the Plan.

16

Ameren Corporation Savings Investment Plan

SCHEDULE H, Line 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR)

December 31, 2019

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003

(a)	(b)	(c)		(d)		(e)
	Identity of issue, borrower,	Description of investment including maturity date,				Current
	lessor, or similar party	rate of interest, collateral, par, or maturity value		Cost		value
	Interest-bearing Cash
	State Street Global Advisors	SSGA Short Term Investment Fund		$	5,063,268.94	$	5,063,268.94
	Total Interest-bearing Cash				5,063,268.94		5,063,268.94
	Mutual Funds
	American Funds Group	EuroPacific Growth Fund			118,916,818.18		144,232,274.55
	Sands Capital Management	Touchstone Sands Capital Institutional Growth Fund			39,870,721.77		44,444,039.04
	Pacific Investment Management Company	PIMCO Income Institutional Fund			23,607,631.56		23,760,767.49
*	Fidelity Management Trust Company	Fidelity Institutional Money Market Government Portfolio			2,143,247.64		2,143,247.64
	Total Mutual Funds				184,538,419.15		214,580,328.72
	Collective Investment Trusts
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index Retirement Fund L			105,059,881.43		112,033,953.86
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2025 Fund L			100,676,958.34		123,168,487.02
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2030 Fund L			76,671,713.62		96,446,622.03
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2035 Fund L			44,269,054.82		56,775,433.74
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2040 Fund L			46,286,323.50		59,669,233.37
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2045 Fund L			43,024,601.96		56,333,868.65
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2050 Fund L			38,809,371.00		50,594,187.56
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2055 Fund L			24,867,764.56		31,443,040.11
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2060 Fund L			5,394,883.65		6,080,077.66
	BlackRock Institutional Trust Company, N.A.	BlackRock LifePath Index 2065 Fund L			84,861.61		86,001.70
	BlackRock Institutional Trust Company, N.A.	BlackRock Equity Index Fund M			236,753,258.32		352,306,599.03
	BlackRock Institutional Trust Company, N.A.	BlackRock Russell 2500 Index Fund M			115,082,374.02		156,769,526.52
	BlackRock Institutional Trust Company, N.A.	BlackRock MSCI ACWI ex-US IMI Index Fund F			54,922,302.30		58,333,484.89
	BlackRock Institutional Trust Company, N.A.	BlackRock US Debt Index Fund M			55,179,104.53		60,127,490.09
	BlackRock Institutional Trust Company, N.A.	BlackRock TIPS Bond Index Fund M			16,634,226.90		17,891,983.16
	Wells Fargo Bank, N.A.	Wells Fargo Fixed Income Fund F			83,394,570.34		91,214,236.48
	Wells Fargo Bank, N.A.	Wells Fargo Fixed Income Fund L			120,606,951.06		133,911,178.59
	Wells Fargo Bank, N.A.	Wells Fargo/BlackRock Short Term Investment Fund			15,208,661.00		15,208,661.00
	Robeco Trust Company	Boston Partners Large Cap Value Equity Fund E			58,234,384.29		89,174,661.49
	Hand Benefits and Trust Company	Snyder Capital Small/Mid Cap Value Fund R1			50,552,589.14		60,272,130.61
	Wellington Management Company LLP	Wellington CIF II Core Plus Bond Portfolio			71,276,387.85		71,118,390.52
	Total Collective Investment Trusts				1,362,990,224.24		1,698,959,248.08
	Insurance Company Separate Accounts
	Metropolitan Life Ins Co.	Separate Account #690			25,175,225.97		27,132,381.00
	Metropolitan Life Ins Co.	Separate Account #694			38,040,021.08		41,243,335.00
	Total Insurance Company Separate Accounts				63,215,247.05		68,375,716.00
	Common Stocks
*	Ameren Corporation	4,429,685	Shares		203,080,935.51		340,199,808.00
	SHOPIFY INC CL A	1,684	Shares		550,410.42		669,524.72
	ADYEN BV	1,316	Shares		982,214.49		1,079,070.91
	UNREAL INDIA CAP GAIN TAX	1	Shares		—		—
	ABBOTT LAB	15,004	Shares		729,276.56		1,303,247.44
	ADOBE INC	7,250	Shares		436,947.46		2,391,122.50
	ALEXION PHARMACEUTICALS I	7,320	Shares		965,152.11		791,658.00
	ALIBABA GROUP HLDGS LTD S	12,516	Shares		1,336,920.32		2,654,643.60
	ALPHABET INC CL C	2,304	Shares		1,382,201.29		3,080,494.08
	ALPHABET INC CL A	1,607	Shares		717,825.12		2,152,399.73
	AMAZON.COM INC	2,584	Shares		1,427,704.79		4,774,818.56
	AMERICAN TOWER CORP	2,877	Shares		480,728.45		661,192.14
	APPLE INC	12,150	Shares		1,166,861.48		3,567,847.50
	ASTRAZENECA PLC SPONS ADR	35,021	Shares		1,334,779.19		1,746,147.06
	BIOMARIN PHARMACEUTICAL I	8,036	Shares		636,362.40		679,443.80
	BOEING CO	4,805	Shares		511,429.93		1,565,276.80
	CHIPOTLE MEXICAN GRILL IN	1,272	Shares		849,325.66		1,064,803.92
	CONSTELLATION BRANDS INC	5,352	Shares		961,114.16		1,015,542.00
	COSTCO WHOLESALE CORP	6,145	Shares		849,600.65		1,806,138.40
	COUPA SOFTWARE INC	2,711	Shares		380,142.06		396,483.75
	DANAHER CORP	6,692	Shares		871,763.97		1,027,088.16
	DEXCOM INC	2,710	Shares		459,135.20		592,785.40
	DISNEY (WALT) CO	2,967	Shares		402,736.95		429,117.21
	EDWARDS LIFESCIENCES CORP	2,580	Shares		562,591.63		601,888.20
	EXACT SCIENCES CORP	6,010	Shares		597,913.63		555,804.80
	FACEBOOK INC CL A	14,416	Shares		842,240.40		2,958,884.00
	FLEETCOR TECH INC	5,712	Shares		1,049,735.22		1,643,456.64

1

Ameren Corporation Savings Investment Plan

SCHEDULE H, Line 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR)

December 31, 2019

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003

(a)	(b)	(c)		(d)		(e)
	Identity of issue, borrower,	Description of investment including maturity date,				Current
	lessor, or similar party	rate of interest, collateral, par, or maturity value		Cost		value
	GOLDMAN SACHS GROUP INC	4,658	Shares		809,641.27		1,071,013.94
	AIRBUS SE	2,492	Shares		321,462.31		364,727.66
	GUARDANT HEALTH INC	2,160	Shares		167,049.55		168,782.40
	HOME DEPOT INC	7,245	Shares		1,047,102.74		1,582,163.10
	ILLUMINA INC	4,082	Shares		629,846.76		1,354,162.68
	INTUITIVE SURGICAL INC	1,981	Shares		1,076,222.43		1,171,068.15
	JPMORGAN CHASE & CO	5,923	Shares		496,157.63		825,666.20
	KERING UNSPONSORED ADR	25,202	Shares		1,157,657.57		1,647,202.72
	ESTEE LAUDER COS INC CL A	7,925	Shares		900,769.07		1,636,829.50
	LILLY (ELI) & CO	3,450	Shares		417,261.19		453,433.50
	LULULEMON ATHLETICA INC	6,136	Shares		819,112.22		1,421,527.12
	MARRIOTT INTL INC A	10,288	Shares		636,981.04		1,557,911.84
	MASTERCARD INC CL A	12,920	Shares		659,273.75		3,857,782.80
	MICROSOFT CORP	24,063	Shares		1,494,114.38		3,794,735.10
	MONDELEZ INTL INC	15,603	Shares		549,114.88		859,413.24
	NETFLIX INC	7,766	Shares		808,177.71		2,512,844.62
	NIKE INC CL B	25,157	Shares		1,078,542.99		2,548,655.67
	NOVARTIS AG SPON ADR	2,797	Shares		258,973.18		264,847.93
	NVIDIA CORP	7,928	Shares		903,721.70		1,865,458.40
	PARKER HANNIFIN CORP	6,234	Shares		987,929.89		1,283,081.88
	PAYPAL HLDGS INC	10,480	Shares		798,988.69		1,133,621.60
	QUALCOMM INC	12,935	Shares		1,077,989.00		1,141,255.05
	S&P GLOBAL INC	3,914	Shares		346,390.05		1,068,717.70
	SALESFORCE.COM INC	23,764	Shares		2,038,733.80		3,864,976.96
	SAP SE SPON ADR	6,433	Shares		873,720.86		861,957.67
	SVCSNOW INC	3,169	Shares		690,318.64		894,672.08
	SPLUNK INC	8,472	Shares		460,313.03		1,268,851.44
	SQUARE INC CL A	6,742	Shares		449,091.63		421,779.52
	TESLA INC	4,399	Shares		1,185,379.33		1,840,233.67
	TWILIO INC CLASS A	4,509	Shares		541,040.92		443,144.52
	UBER TECH INC	17,728	Shares		632,890.60		527,230.72
	UNIVERSAL DISPLAY CORP	878	Shares		172,400.58		180,929.46
	VERTEX PHARMACEUTICALS IN	3,978	Shares		447,317.36		870,983.10
	VISA INC CL A	16,997	Shares		724,613.94		3,193,736.30
	WORKDAY INC CL A	6,966	Shares		620,852.38		1,145,558.70
	XILINX INC	4,171	Shares		422,002.63		407,798.67
	ADIENT PLC	25,177	Shares		1,707,955.72		535,011.25
	AERCAP HLDGS NV	44,903	Shares		1,583,249.22		2,760,187.41
	SUNCOR ENERGY INC	114,479	Shares		3,046,035.31		3,754,911.20
	AECOM	38,878	Shares		1,126,332.65		1,676,808.14
	AFFILIATED MANAGERS GRP I	13,877	Shares		2,141,702.72		1,175,936.98
	AIR LEASE CORP CL A	33,890	Shares		1,296,369.85		1,610,452.80
	ALLIANCE DATA SYS CORP	15,373	Shares		2,570,518.38		1,724,850.60
	AMERIPRISE FIN INC	23,076	Shares		2,439,106.58		3,844,000.08
	ARROW ELECTRONICS INC	23,304	Shares		1,762,146.95		1,974,780.96
	ASSURANT INC	15,950	Shares		1,372,993.81		2,090,726.00
	AVIS BUDGET GROUP	23,106	Shares		653,756.35		744,937.44
	BROADCOM INC	11,423	Shares		1,908,548.74		3,609,896.46
	CELANESE CORP	29,134	Shares		2,240,405.11		3,586,978.08
	CENTENE CORP	66,037	Shares		3,296,105.24		4,151,746.19
	COMMSCOPE HLDG CO INC	47,039	Shares		1,425,946.58		667,483.41
	CROWN HLDGS INC	35,110	Shares		1,795,167.78		2,546,879.40
	FLEX LTD	137,731	Shares		2,159,418.87		1,738,165.22
	EOG RESOURCES INC	36,986	Shares		2,995,338.12		3,097,947.36
	GOODYEAR TIRE & RUBBER CO	63,462	Shares		1,701,505.73		987,151.41
	HCA HEALTHCARE INC	27,195	Shares		2,381,358.01		4,019,692.95
	HANESBRANDS INC	102,274	Shares		1,494,202.89		1,518,768.90
	HERTZ GLOBAL HLDGS INC	28,054	Shares		719,420.70		441,850.50
	LINCOLN NATIONAL CORP	55,237	Shares		2,785,170.43		3,259,535.37
	MICROCHIP TECH	37,469	Shares		2,858,278.37		3,923,753.68
	O-I GLASS INC	40,566	Shares		598,743.19		483,952.38
	QUANTA SVCS INC	41,206	Shares		1,400,279.83		1,677,496.26
	QURATE RETAIL INC	114,849	Shares		2,728,977.25		968,177.07
	SYNNEX CORP	14,223	Shares		1,766,484.28		1,831,922.40
	TENNECO INC	15,146	Shares		542,970.85		198,412.60
	UNITED RENTALS INC	22,309	Shares		2,966,299.81		3,720,471.93
	WESTERN DIGITAL CORP	53,363	Shares		2,830,756.19		3,386,949.61
	WHIRLPOOL CORP	17,321	Shares		3,024,389.16		2,555,367.13

2

Ameren Corporation Savings Investment Plan

SCHEDULE H, Line 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR)

December 31, 2019

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003

(a)	(b)	(c)		(d)		(e)
	Identity of issue, borrower,	Description of investment including maturity date,				Current
	lessor, or similar party	rate of interest, collateral, par, or maturity value		Cost		value
	XPO LOGISTICS INC	34,785	Shares		2,099,718.18		2,772,364.50
	STERIS PLC	6,729	Shares		819,118.85		1,025,634.18
	FIRSTSVCS CORP	7,405	Shares		244,968.65		688,961.20
	HORIZON THERAPEUTICS PLC	46,222	Shares		737,990.39		1,673,236.40
	AXALTA COATING SYS LTD	19,390	Shares		554,467.13		589,456.00
	UNREAL INDIA CAP GAIN TAX	1	Shares		—		—
	ABIOMED INC	3,830	Shares		976,818.39		653,359.70
	ADVANCE AUTO PARTS INC	4,363	Shares		670,562.46		698,778.08
	AMEDISYS INC	5,820	Shares		690,620.11		971,474.40
	ANAPLAN INC	9,960	Shares		524,857.36		521,904.00
	ARES MANAGEMENT CORP CL A	15,971	Shares		515,639.92		570,004.99
	ASPEN TECH	9,544	Shares		928,114.48		1,154,155.92
	AVALARA INC	11,583	Shares		738,810.46		848,454.75
	BJS WHSL CLUB HLDGS INC	50,840	Shares		1,286,705.29		1,156,101.60
	BWX TECH INC	38,031	Shares		1,732,984.43		2,360,964.48
	BOOZ ALLEN HAMILTON HLDG	14,733	Shares		471,952.00		1,047,958.29
	BRINKS CO	11,202	Shares		886,671.93		1,015,797.36
	BURLINGTON STORES INC	8,480	Shares		1,359,935.46		1,933,694.40
	CBOE GLOBAL MARKETS INC	5,980	Shares		491,906.48		717,600.00
	CABLE ONE INC W/I	670	Shares		520,001.83		997,274.90
	COPART INC	7,840	Shares		287,706.42		712,969.60
	RITCHIE BROS AUCTIONEERS	19,300	Shares		639,022.69		828,935.00
	CROWN HLDGS INC	19,280	Shares		1,185,526.66		1,398,571.20
	ENCORE CAP GROUP INC	16,809	Shares		595,517.91		594,366.24
	ENCOMPASS HEALTH CORP	25,786	Shares		1,306,376.36		1,786,196.22
	ENTEGRIS INC	6,942	Shares		343,023.64		347,724.78
	ETSY INC	12,185	Shares		517,337.21		539,795.50
	EURONET WORLDWIDE INC	11,190	Shares		1,067,249.85		1,763,096.40
	FIRSTCASH INC	11,109	Shares		650,980.86		895,718.67
	GENERAC HLDGS INC	5,550	Shares		552,233.21		558,274.50
	GLAUKOS CORP	11,019	Shares		409,287.08		600,204.93
	GODADDY INC CL A	15,736	Shares		1,118,225.22		1,068,789.12
	GRAND CANYON EDUCATION IN	16,068	Shares		1,437,234.02		1,539,153.72
	GUIDEWIRE SOFTWARE INC	6,710	Shares		353,186.42		736,556.70
	HALOZYME THERAPEUTICS INC	36,497	Shares		581,545.30		647,091.81
	HEALTHCARE SVCS GROUP INC	31,436	Shares		1,275,415.68		764,523.52
	HEICO CORP CL A	8,856	Shares		346,071.33		792,877.68
	IRHYTHM TECH INC	7,880	Shares		508,851.03		536,549.20
	INSPIRE MEDICAL SYS INC	6,276	Shares		360,228.40		465,741.96
	INSULET CORP	9,827	Shares		975,395.23		1,682,382.40
	iShares Trust: iShares Ru	1,860	Shares		263,908.33		283,798.80
	iShares Russell 2000 Grow	5,420	Shares		1,065,704.79		1,161,072.40
	JONES LANG LASALLE INC	5,198	Shares		666,437.87		904,919.82
	J2 GLOBAL INC	11,394	Shares		816,805.03		1,067,731.74
	LAMB WESTON HLDGS INC	19,740	Shares		1,353,242.53		1,698,232.20
	LIGAND PHARMACEUTICALS	7,648	Shares		750,720.47		797,609.92
	LIVE NATION ENTERTAINMENT	21,430	Shares		888,819.44		1,531,602.10
	MARTIN MARIETTA MATERIALS	6,690	Shares		1,343,768.57		1,870,791.60
	NATIONAL INSTRUMENT CORP	14,415	Shares		574,681.33		610,331.10
	NICE LTD SPON ADR	7,910	Shares		827,290.70		1,227,236.50
	NOVANTA INC	5,910	Shares		350,719.87		522,680.40
	OLLIES BARGAIN OUTLET HLD	10,330	Shares		653,003.94		674,652.30
	PARSLEY ENERGY INC CL A	21,070	Shares		593,903.05		398,433.70
	PENUMBRA INC	7,281	Shares		1,015,814.80		1,196,049.87
	PERSPECTA INC	19,970	Shares		534,626.46		528,006.80
	PLANET FITNESS INC CL A	9,580	Shares		707,808.41		715,434.40
	PORTOLA PHARMACEUTICALS I	38,912	Shares		1,172,951.51		929,218.56
	PROOFPOINT INC	6,180	Shares		777,767.21		709,340.40
	PURE STORAGE INC CL A	78,435	Shares		1,549,190.70		1,342,022.85
	QUALYS INC	1,853	Shares		159,602.02		154,484.61
	ROGERS CORP	4,629	Shares		666,973.64		577,375.17
	SABRE CORP	50,130	Shares		1,203,790.41		1,124,917.20
	SIGNATURE BANK	5,070	Shares		651,833.72		692,612.70
	SITEONE LANDSCAPE SUPPLY	7,750	Shares		309,445.60		702,537.50
	TELEDYNE TECH INC	5,006	Shares		980,827.23		1,734,779.24
	TELEFLEX INC	3,790	Shares		998,570.51		1,426,707.60
	TRANSUNION	16,270	Shares		772,569.15		1,392,874.70
	TREX CO INC	22,160	Shares		1,519,635.24		1,991,740.80

3

Ameren Corporation Savings Investment Plan

SCHEDULE H, Line 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR)

December 31, 2019

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003

(a)	(b)	(c)		(d)		(e)
	Identity of issue, borrower,	Description of investment including maturity date,				Current
	lessor, or similar party	rate of interest, collateral, par, or maturity value		Cost		value
	VAIL RESORTS INC	4,700	Shares		1,013,215.70		1,127,201.00
	VARONIS SYS INC	7,080	Shares		551,024.12		550,186.80
	VERACYTE INC	17,382	Shares		430,117.46		485,305.44
	VIRTU FIN INC- CL A	41,715	Shares		833,155.38		667,022.85
	WAYFAIR INC	5,588	Shares		589,262.30		504,987.56
	WEX INC	4,720	Shares		586,159.31		988,651.20
	WORLD WRESTLING ENTMT CL	12,200	Shares		864,711.19		791,414.00
	ZYNGA INC	142,480	Shares		889,737.96		871,977.60
	CRISPR THERAPEUTICS AG	3,671	Shares		251,806.55		223,582.26
	CONSTELLIUM SE CL A	16,635	Shares		240,448.94		222,909.00
	HORIZON THERAPEUTICS PLC	26,298	Shares		701,576.39		951,987.60
	AMBARELLA INC	8,949	Shares		458,759.25		541,951.44
	UNREAL INDIA CAP GAIN TAX	1	Shares		—		—
	AAR CORP	20,048	Shares		855,885.10		904,164.80
	ACADIA PHARMACEUTICALS IN	2,353	Shares		121,117.15		100,661.34
	AMEDISYS INC	3,865	Shares		527,850.60		645,145.80
	ANAPLAN INC	14,539	Shares		731,625.82		761,843.60
	ARROWHEAD PHARMACEUTICALS	2,000	Shares		141,888.40		126,860.00
	BOOT BARN HLDGS INC	8,426	Shares		199,274.72		375,209.78
	BURLINGTON STORES INC	5,287	Shares		1,061,610.89		1,205,594.61
	CARMAX INC	10,698	Shares		952,360.89		937,893.66
	CHEGG INC	13,892	Shares		351,809.88		526,645.72
	CHEWY INC	18,658	Shares		484,890.21		541,082.00
	CLEAN HARBORS INC	15,059	Shares		1,077,711.12		1,291,309.25
	CONMED CORP	9,757	Shares		956,099.40		1,091,125.31
	COSTAR GROUP INC	412	Shares		145,725.88		246,499.60
	CROCS INC	12,614	Shares		446,250.41		528,400.46
	CROWN HLDGS INC	17,777	Shares		1,168,844.83		1,289,543.58
	CRYOPORT INC	13,320	Shares		304,120.99		219,247.20
	DEXCOM INC	9,168	Shares		917,176.98		2,005,408.32
	DOCUSIGN INC	3,289	Shares		239,201.68		243,747.79
	EVERBRIDGE INC	10,662	Shares		801,670.56		832,488.96
	EXACT SCIENCES CORP	12,169	Shares		997,771.77		1,125,389.12
	FTI CONSULTING INC	2,252	Shares		239,322.25		249,206.32
	FIVE BELOW INC	1,924	Shares		224,511.32		246,002.64
	FIVE9 INC	14,944	Shares		582,133.47		980,027.52
	FLOOR & DECOR HLDGS INC	6,472	Shares		320,817.05		328,842.32
	FRESHPET INC	5,595	Shares		230,831.24		330,608.55
	HAEMONETICS CORP MASS	4,585	Shares		563,353.30		526,816.50
	HAMILTON LANE INC — A	6,735	Shares		405,296.09		401,406.00
	INPHI CORP	8,512	Shares		568,887.55		630,058.24
	INSPIRE MEDICAL SYS INC	18,009	Shares		1,012,602.78		1,336,447.89
	INSULET CORP	4,705	Shares		591,927.73		805,496.00
	KANSAS CITY SOUTHERN	7,013	Shares		899,620.63		1,074,111.08
	KEYSIGHT TECH INC	11,374	Shares		762,395.55		1,167,313.62
	LHC GROUP INC	4,068	Shares		500,164.46		560,407.68
	LATTICE SEMICONDUCTOR COR	33,226	Shares		657,817.26		635,945.64
	LULULEMON ATHLETICA INC	2,374	Shares		351,458.90		549,984.58
	MKS INSTRUMENTS INC	1,990	Shares		228,173.40		218,919.90
	MANHATTAN ASSIC INC	3,849	Shares		267,915.09		306,957.75
	MASCO CORPORATION	22,641	Shares		944,787.99		1,086,541.59
	Mirati Therapeutics Inc	2,029	Shares		200,277.23		261,456.94
	NIC INC	17,220	Shares		358,961.14		384,867.00
	NAPCO SECURITY TECH IN	11,521	Shares		345,456.73		338,602.19
	NATERA INC	20,710	Shares		718,277.48		697,719.90
	NORDSON CORP	2,957	Shares		483,585.81		481,517.88
	NUANCE COMM INC	20,226	Shares		362,310.36		360,629.58
	OKTA INC CL A	1,871	Shares		239,475.84		215,857.27
	ON SEMICONDUCTOR CORP	30,725	Shares		671,629.69		749,075.50
	OWENS CORNING INC	10,206	Shares		621,746.09		664,614.72
	PAPA JOHNS INTL INC	9,535	Shares		505,951.86		602,135.25
	PAYCOM SOFTWARE INC	999	Shares		251,329.62		264,495.24
	PENUMBRA INC	3,509	Shares		596,549.90		576,423.43
	PERFORMANCE FOOD GROUP CO	5,212	Shares		235,712.61		268,313.76
	PINNACLE FINL PARTNERS IN	15,096	Shares		907,995.13		966,144.00
	Q2 HLDGS INC	13,210	Shares		762,425.77		1,071,066.80
	RAPID7 INC	16,966	Shares		660,241.53		950,435.32
	REATA PHARMACEUTICALS INC	1,845	Shares		222,797.36		377,173.35

4

Ameren Corporation Savings Investment Plan

SCHEDULE H, Line 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR)

December 31, 2019

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003

(a)	(b)	(c)		(d)		(e)
	Identity of issue, borrower,	Description of investment including maturity date,				Current
	lessor, or similar party	rate of interest, collateral, par, or maturity value		Cost		value
	RINGCENTRAL INC CL A	10,469	Shares		1,123,663.38		1,765,806.23
	ROKU INC CLASS A	3,110	Shares		334,488.33		416,429.00
	SVB FINL GROUP	5,198	Shares		1,206,346.53		1,304,905.92
	SAGE THERAPEUTICS INC	3,523	Shares		516,566.33		254,325.37
	SEA LTD ADR	12,213	Shares		369,045.23		491,206.86
	SUMMIT MATERIALS INC CL A	9,828	Shares		242,315.88		234,889.20
	TANDEM DIABETES CARE INC	17,311	Shares		684,004.91		1,031,908.71
	TERADYNE INC	6,304	Shares		312,809.77		429,869.76
	TETRA TECH INC	5,763	Shares		432,732.48		496,540.08
	TRANSUNION	11,264	Shares		911,762.26		964,311.04
	TYLER TECH INC	2,770	Shares		686,040.16		831,055.40
	UNIVERSAL DISPLAY CORP	1,168	Shares		232,350.00		240,689.76
	VIAVI SOLUTIONS INC	48,194	Shares		707,309.04		722,910.00
	ZEBRA TECH CORP CL A	2,535	Shares		604,029.91		647,540.40
	ZYNGA INC	35,933	Shares		201,607.12		219,909.96
	ESSENT GROUP LTD	11,018	Shares		454,608.64		572,825.82
	TRINSEO SA	6,983	Shares		454,241.40		259,837.43
	NOMAD FOODS LTD	13,676	Shares		288,341.86		305,932.12
	ASSURED GUARANTY LTD	10,455	Shares		396,836.67		512,504.10
	JAZZ PHARMA PLC	1,893	Shares		318,489.54		282,587.04
	ENERPLUS CORP	43,462	Shares		525,191.02		309,884.06
	ICON PLC	2,975	Shares		413,929.06		512,384.25
	ACCO BRANDS CORP	34,153	Shares		449,477.27		319,672.08
	ABM INDU INC	15,588	Shares		512,124.71		587,823.48
	AGNC INVESTMENT CORP	21,409	Shares		390,127.54		378,511.12
	AES CORP	15,410	Shares		207,745.44		306,659.00
	AMC NETWORKS INC CL A	4,493	Shares		273,147.96		177,473.50
	ASGN INC	9,294	Shares		744,624.56		659,595.18
	AECOM	10,772	Shares		357,070.34		464,596.36
	AEGION CORP	20,030	Shares		403,547.20		448,071.10
	AIR LEASE CORP CL A	17,716	Shares		746,354.90		841,864.32
	ALASKA AIR GROUP INC	4,471	Shares		284,916.40		302,910.25
	ALLEGHANY CORP DEL	652	Shares		403,796.47		521,319.64
	ALLIANCE DATA SYS CORP	1,790	Shares		386,846.88		200,838.00
	ALLY FIN INC	5,545	Shares		155,607.52		169,455.20
	APERGY CORP	7,675	Shares		226,984.40		259,261.50
	ARES CAPITAL CORP	10,506	Shares		179,942.67		195,936.90
	ARES COMMERCIAL REAL ESTA	10,785	Shares		153,389.43		170,834.40
	ARROW ELECTRONICS INC	7,695	Shares		565,806.68		652,074.30
	ASSURANT INC	2,638	Shares		277,161.73		345,789.04
	AVANTOR INC	21,763	Shares		307,299.51		394,998.45
	AVERY DENNISON CORP	1,545	Shares		145,288.06		202,116.90
	BMC STK HLDGS INC	7,089	Shares		152,843.24		203,383.41
	BANKUNITED INC	10,555	Shares		404,508.91		385,890.80
	BELDEN INC	12,019	Shares		748,218.41		661,045.00
	BLACKSTONE MORTGAGE TR CL	8,442	Shares		280,459.41		314,211.24
	BOOZ ALLEN HAMILTON HLDG	4,017	Shares		199,054.97		285,729.21
	BOSTON PRIVATE FINL HLDG	12,410	Shares		158,354.45		149,292.30
	CDK GLOBAL INC	17,478	Shares		988,300.92		955,697.04
	CDW CORPORATION	1,279	Shares		116,465.52		182,692.36
	CADENCE BANCORP CL A	10,499	Shares		247,890.71		190,346.87
	CARLISLE COS INC	1,393	Shares		165,341.93		225,443.12
	CENTERSTATE BANKS CORPORA	11,172	Shares		308,971.45		279,076.56
	CHANGE HEALTHCARE INC	27,499	Shares		371,401.13		450,708.61
	CHATHAM LODGING TR	2,197	Shares		44,533.84		40,292.98
	CHEMED CORP	398	Shares		132,576.40		174,825.48
	CIENA CORP	14,463	Shares		412,714.74		617,425.47
	CIMAREX ENERGY CO	4,465	Shares		361,473.70		234,367.85
	COHERENT INC	1,999	Shares		324,886.49		332,533.65
	COLONY CAPITAL INC	42,996	Shares		234,249.81		204,231.00
	COLUMBIA BANKING SYS INC	5,398	Shares		209,201.19		219,617.63
	COMMSCOPE HLDG CO INC	16,019	Shares		342,986.14		227,309.61
	FRESH DEL MONTE PRODUCE I	8,089	Shares		327,708.73		282,953.22
	COUSINS PROPERTIES INC	4,373	Shares		147,011.02		180,167.60
	AMDOCS LTD	5,959	Shares		399,754.24		430,180.21
	CURTISS WRIGHT CORPORATIO	1,961	Shares		208,643.14		276,285.29
	WHITE MOUNTAINS INS GROUP	404	Shares		374,648.28		450,666.04
	FLEX LTD	21,928	Shares		298,241.97		276,731.36

5

Ameren Corporation Savings Investment Plan

SCHEDULE H, Line 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR)

December 31, 2019

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003

(a)	(b)	(c)		(d)		(e)
	Identity of issue, borrower,	Description of investment including maturity date,				Current
	lessor, or similar party	rate of interest, collateral, par, or maturity value		Cost		value
	DIAMONDBACK ENERGY INC	3,659	Shares		456,444.79		339,774.74
	EVEREST REINSURANCE GROUP	1,749	Shares		409,621.94		484,193.16
	AXIS CAPITAL HLDGS LTD	5,574	Shares		320,381.79		331,318.56
	EAST WEST BANCORP INC	10,204	Shares		611,385.63		496,934.80
	ENCANA CORP	42,166	Shares		261,755.38		197,758.54
	ENERGIZER HLDGS INC	15,561	Shares		813,419.74		781,473.42
	ENERSYS INC	9,187	Shares		700,073.30		687,463.21
	ENTERCOM COMM CORP CL A	38,892	Shares		238,529.39		180,458.88
	ENVISTA HLDGS CORP	13,080	Shares		342,213.97		387,691.20
	EQUITRANS MIDSTREAM CORP	5,012	Shares		146,286.33		66,960.32
	EVERCORE INC A	4,586	Shares		365,052.67		342,849.36
	EVERTEC INC	6,649	Shares		184,137.10		226,331.96
	EXTENDED STAY AMERICA INC	28,099	Shares		412,592.14		417,551.14
	FMC CORP NEW	1,923	Shares		143,236.58		191,953.86
	FTI CONSULTING INC	6,184	Shares		445,861.09		684,321.44
	FIRST CITIZENS BANCSHARES	622	Shares		258,692.32		331,034.62
	FIRST HAWAIIAN INC	18,117	Shares		467,891.99		522,675.45
	FIRST MERCHANTS CORP	7,279	Shares		330,390.88		302,733.61
	FIRST MIDWEST BANCORP INC	12,471	Shares		304,860.94		287,581.26
	FIRSTCASH INC	3,653	Shares		332,961.53		294,541.39
	FOOT LOCKER INC	4,630	Shares		183,032.20		180,523.70
	FRONTDOOR INC	7,916	Shares		291,314.86		375,376.72
	GENTEX CORP	10,246	Shares		221,203.42		296,929.08
	GRAPHIC PACKAGING HLDGS C	89,444	Shares		1,235,726.30		1,489,242.60
	GROUP 1 AUTOMOTIVE INC	2,926	Shares		204,738.37		292,600.00
	HD SUPPLY HLDGS INC	3,914	Shares		154,294.66		157,421.08
	HANMI FIN CORPORATION	8,735	Shares		230,065.30		174,656.33
	HANOVER INSURANCE GROUP I	2,488	Shares		308,380.17		340,034.96
	HUNTINGTON BANCSHARES INC	22,980	Shares		309,008.77		346,538.40
	HUNTINGTON INC	592	Shares		135,034.01		148,520.96
	HURON CONSULTING GROUP IN	3,530	Shares		163,853.30		242,581.60
	IAA INC	15,218	Shares		551,765.15		716,159.08
	INSIGHT ENTERPRISES INC	8,865	Shares		456,302.20		623,120.85
	JAGGED PEAK ENERGY INC	26,675	Shares		279,688.18		226,470.75
	JEFFERIES FIN GROUP INC	18,986	Shares		422,821.42		405,730.82
	JONES LANG LASALLE INC	2,452	Shares		393,548.76		426,868.68
	KAR AUCTION SVCS INC	18,814	Shares		413,913.50		409,957.06
	KOSMOS ENERGY LTD	82,254	Shares		515,621.95		468,847.80
	LCI INDU	5,482	Shares		488,669.30		587,286.66
	LPL FINL HLDGS INC	4,486	Shares		302,463.48		413,833.50
	LA Z BOY INC	4,754	Shares		152,504.62		149,655.92
	LANDSTAR SYS INC	1,639	Shares		184,274.49		186,632.93
	LITHIA MOTORS INC CL A	5,686	Shares		555,755.79		835,842.00
	MFA FIN INC	61,207	Shares		461,189.81		468,233.55
	STEVEN MADDEN LTD	12,470	Shares		460,111.74		536,334.70
	MARATHON OIL CORP	12,895	Shares		214,829.76		175,114.10
	MAXIMUS INC	1,611	Shares		107,171.30		119,842.29
	MINERALS TECH INC	7,293	Shares		526,205.97		420,295.59
	MOLINA HEALTHCARE INC	3,823	Shares		498,843.17		518,742.87
	MOSAIC CO NEW	9,807	Shares		309,371.11		212,223.48
	NCR CORP	13,487	Shares		403,060.98		474,202.92
	NMI HLDGS INC	5,871	Shares		158,112.95		194,799.78
	NATIONAL GEN HLDGS CORP	26,854	Shares		700,914.64		593,473.40
	NAVIENT CORP	42,383	Shares		580,568.16		579,799.44
	NELNET INC CL A	2,886	Shares		175,096.78		168,080.64
	NEXSTAR MEDIA GROUP INC A	4,309	Shares		460,851.66		505,230.25
	O-I GLASS INC	14,309	Shares		237,164.89		170,706.37
	OLIN CORP	10,153	Shares		176,148.78		175,139.25
	ON SEMICONDUCTOR CORP	9,514	Shares		218,090.56		231,951.32
	OWENS CORNING INC	6,144	Shares		389,586.77		400,097.28
	PRA GROUP INC	7,734	Shares		313,583.13		280,744.20
	PATTERSON COMPANIES INC	7,635	Shares		171,761.63		156,364.80
	PEAPACK GLADSTONE FINL CO	5,279	Shares		160,184.95		163,121.10
	PQ GROUP HLDGS INC	22,402	Shares		390,991.50		384,866.36
	PREFERRED BANK LOS ANGELE	3,396	Shares		205,680.44		204,065.64
	PROASSURANCE CORPORATION	7,005	Shares		306,604.58		253,160.70
	QORVO INC	5,517	Shares		425,209.17		641,240.91
	RADIAN GROUP INC	11,932	Shares		223,953.61		300,209.12

6

Ameren Corporation Savings Investment Plan

SCHEDULE H, Line 4i - SCHEDULE OF ASSETS (HELD AT END OF YEAR)

December 31, 2019

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003

(a)	(b)	(c)		(d)		(e)
	Identity of issue, borrower,	Description of investment including maturity date,				Current
	lessor, or similar party	rate of interest, collateral, par, or maturity value		Cost		value
	REDWOOD TR INC REIT	10,396	Shares		164,799.82		171,949.84
	REINSURANCE GROUP OF AMER	3,336	Shares		483,641.56		543,968.16
	SL GREEN REALTY CORP REIT	2,129	Shares		195,765.59		195,612.52
	SLM CORP	104,251	Shares		1,136,437.01		928,876.41
	SVB FINL GROUP	918	Shares		195,821.98		230,454.72
	SCHWEITZER-MAUDUIT INTL I	11,598	Shares		485,844.96		487,000.02
	SCIENCE APPLICATIONS INTL	5,255	Shares		432,267.53		457,290.10
	SKECHERS USA INC CL A	14,581	Shares		435,605.51		629,753.39
	SPECTRUM BRANDS HLDGS INC	3,374	Shares		171,050.19		216,914.46
	SPIRIT AIRLINES INC	5,558	Shares		281,670.98		224,042.98
	SPIRIT RLTY CAP INC	4,149	Shares		172,179.68		204,047.82
	STANDARD MOTOR PRODUCTS I	3,385	Shares		164,780.51		180,149.70
	STARWOOD PROPERTY TR INC	19,841	Shares		443,381.46		493,247.26
	SUNCOKE ENERGY INC	51,224	Shares		630,173.23		319,125.52
	SYKES ENTERPRISES INC	5,941	Shares		178,654.79		219,757.59
	SYNOVUS FINANCIAL CORP.	11,877	Shares		505,520.00		465,578.40
	SYNNEX CORP	7,593	Shares		719,782.10		977,978.40
	SYNEOS HEALTH INC	11,868	Shares		584,238.41		705,849.30
	TERADYNE INC	6,247	Shares		255,386.58		425,982.93
	TETRA TECH INC	3,794	Shares		241,033.98		326,891.04
	TIMKEN CO	7,393	Shares		343,662.20		416,299.83
	TTEC HLDGS INC	11,866	Shares		414,935.05		470,130.92
	TUTOR PERINI CORP	14,070	Shares		260,700.01		180,940.20
	TWO HBRS INVT CORP	63,180	Shares		956,957.42		923,691.60
	UMPQUA HLDGS CORP	13,374	Shares		253,920.10		236,719.80
	UNIVERSAL CORP	4,949	Shares		308,912.20		282,389.94
	VALVOLINE INC	23,441	Shares		501,923.22		501,871.81
	VISTRA ENERGY CORP	11,824	Shares		302,731.29		271,833.76
	WALKER & DUNLOP INC	13,714	Shares		795,830.12		887,021.52
	WESCO INTL INC	8,558	Shares		467,787.63		508,259.62
	WORLD FUEL SVCS CORP	23,279	Shares		556,001.73		1,010,774.18
	WYNDHAM DESTINATIONS INC	7,815	Shares		358,382.11		403,957.35
	YELP INC	11,831	Shares		398,050.19		412,073.73
	Total Common Stocks				469,230,709.12		679,323,657.40
	Notes Receivable
* / **	Participants	Participant Loans			33,618,334.64		33,618,334.64
				$	2,118,656,203.14	$	2,699,920,553.78

* Investment represents allowable transaction with a party-in-interest.

** Interest rates vary from 4.00% to 10.50% on loans maturing through 2029.

7

SIGNATURE

The Plan. Pursuant to the requirements of the Securities Exchange Act of 1934, the trustee (or other persons who administer the employee benefit plan) has duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

AMEREN CORPORATION
SAVINGS INVESTMENT PLAN
AMEREN ADMINISTRATIVE COMMITTEE
	(Administrator)
By:	/s/ Marla J. Langenhorst
	Marla J. Langenhorst
	Member of the Administrative
	Committee

June 25, 2020

EXHIBIT INDEX

Exhibit No.	Description
23.1	Consent of Independent Registered Public Accounting Firm
99.1	Fourth Amendment to Ameren Corporation Savings Investment Plan