Ameren 11K Annual report of employee stock purchases

UNITED STATES

SECURITIES AND EXCHANGE COMMISISION

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, 2020

☐	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, 2020 and 2019

Ameren Corporation

Savings Investment Plan

Index


Report of Independent Registered Public Accounting Firm December 31, 2020 and 2019			1-2

Financial Statements

Statements of Net Assets Available for Benefits December 31, 2020 and 2019			3

Statements of Changes in Net Assets Available for Benefits Years Ended December 31, 2020 and 2019			4

Notes to Financial Statements December 31, 2020 and 2019			5-16

Supplemental Schedule*

Schedule H, Line 4i - Schedule of Assets (Held at End of Year) December 31, 2020			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, 2020 and 2019, 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, 2020 and 2019, 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, 2020 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 24, 2021

Ameren Corporation

Savings Investment Plan

Statements of Net Assets Available for Benefits

December 31, 2020 and 2019


	2020		2019
Assets
Investments, at fair value	$	2,667,860,978	$	2,372,801,088
Investments, at contract value		321,003,883		289,817,950

Total investments		2,988,864,861		2,662,619,038


Cash		1		68,815

Receivables
Notes receivable from participants		33,994,821		35,354,528
Participant contributions		3,127,852		2,983,387
Employer contributions		623,687		520,380
Dividends and interest		315,588		472,218
Due from brokers for securities sold		9,034,431		5,383,142

Total receivables		47,096,379		44,713,655


Total assets		3,035,961,241		2,707,401,508


Liabilities
Accrued expenses		662,737		626,534
Due to brokers for securities purchased		9,475,458		2,119,021

Total liabilities		10,138,195		2,745,555


Net assets available for benefits	$	3,025,823,046	$	2,704,655,953

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

Ameren Corporation

Savings Investment Plan

Statements of Changes in Net Assets Available for Benefits

Years Ended December 31, 2020 and 2019


	2020		2019

Additions:
Investment income
Interest and dividends	$	20,377,636	$	24,794,772
Net appreciation in fair value of investments		372,577,335		455,371,217

Total investment income		392,954,971		480,165,989


Interest on notes receivable from participants		1,841,308		1,775,255
Participant contributions		109,954,566		105,448,706
Employer contributions		37,612,346		34,939,878


Total additions		542,363,191		622,329,828


Deductions:
Benefits paid to participants		217,709,502		203,601,534
Administrative expenses		3,486,596		3,500,712

Total deductions		221,196,098		207,102,246


Net increase		321,167,093		415,227,582

Net assets available for benefits
Beginning of year		2,704,655,953		2,289,428,371


End of year	$	3,025,823,046	$	2,704,655,953

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

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

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 (“Fidelity”), 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.

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

The Plan permits “catch-up” contributions for all employees age 50 and older. For eligible employees, the additional “catch-up” contribution is limited to $6,500 and $6,000 in 2020 and 2019, respectively. 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, 2020 and 2019, 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. In compliance with the Setting Every Community Up for Retirement Enhancement (SECURE) Act, which was enacted in December 2019, the Company adopted the provision which affects

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

distributions to former employees. Effective for Participants who turn age 70 ¹⁄₂ after December 31, 2019, the Company will make required minimum distributions (“RMD”) no later than April 1 in the year after the participant reaches the age of 72. In compliance with the Coronavirus Aid, Relief, and Economic Security (CARES) Act, which was enacted in March 2020, the Company temporarily suspended RMDs for 2020.

Participants may withdraw certain basic contributions, rollover contributions and related earnings 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, 2020 and 2019. 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

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

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.

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 Statements of Net Assets Available for Benefits.

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. As a result of the ongoing spread of COVID-19, economic uncertainties continue to arise, which can cause significant volatility in the markets. 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.

Concentrations

Company common stock comprised 11% and 13% of investments at December 31, 2020 and 2019, respectively.

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

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.

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; and

•

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 2020 or 2019.

The asset’s 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.

The 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 2020.

•

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

•

Collective trust funds: The fair values of participation units held in collective trusts are based on the net asset value (“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 daily and are executed at NAV as a practical expedient. The

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

objective of the SSGA Short Term Investment Fund (value of $7,292,977 at December 31, 2020 and $5,063,269 at December 31, 2019) is to provide safety of principal, daily liquidity, and a competitive yield over the long term. The fund is invested in corporate bonds & notes, U.S. government agency obligations, short term instruments, and repurchase agreements. Units are typically purchased and redeemed at a constant NAV of $1.00 per unit. In the event that a significant disparity develops between the constant NAV and the fair value-based NAV, the fund trustee has the sole discretion to direct that the units be issued or redeemed at the fair value-based NAV until the disparity is deemed to be immaterial.

•

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 NAV and to transact at that price. The mutual funds held by the Plan are deemed to be actively traded.

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, 2020:


	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	$	331,644,311	$	—	$	—	$	331,644,311
Common stocks-other than Plan sponsor stock		395,382,087		—		—		395,382,087
Collective trust funds		—		—		1,681,624,551		1,681,624,551
Mutual funds		259,210,029		—		—		259,210,029

Total assets reported at fair value	$	986,236,427	$	—	$	1,681,624,551	$	2,667,860,978

(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.

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

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)

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 $321,003,883 at December 31, 2020. The separately-managed account held (1) an investment in the Wells Fargo/BlackRock Short Term Investment Fund, (2) a portfolio of synthetic guaranteed investment contracts valued at $221,442,234, and (3) a separate account holding guaranteed investment contracts valued at $68,375,716, at December 31, 2019. 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”)

•

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”)

As of December 31, 2020, the underlying investments of the AGL, Mass Mutual, Transamerica, Voya, and Met Life contracts are holdings in collective trust funds.

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

As of December 31, 2019, the underlying investments of the AGL, Mass Mutual, Transamerica, and Voya contracts were holdings in collective trust funds and, the underlying investments of Met Life contracts were holdings in commingled portfolios of fixed income securities, which were 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. Effective July 19, 2019, a synthetic guaranteed investment contract with Prudential Insurance Company of America was terminated and replaced with the Transamerica contract.

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;

•

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; and

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

•

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.

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

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, 2020, the Plan held 4,248,582 shares of Company common stock with a cost and fair value of $200,273,215 and $331,644,311, respectively. During 2020, the Plan purchased 194,005 shares at a cost of $14,549,836 and sold 375,108 shares valued at $30,078,581.

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.

Dividend income from Company common stock was $8,541,913 and $8,622,071 for the years ended December 31, 2020 and December 31, 2019, respectively.

At December 31, 2020 and December 31, 2019, 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 $1,482,653 and $1,443,432 for the years ended December 31, 2020 and December 31, 2019, respectively.

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

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

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

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, 2020 and 2019:


	2020			2019

Net assets available for benefits per the financial statements	$	3,025,823,046		$	2,704,655,953
Amounts allocated to deemed distributions of notes receivable from Participants		(1,899,760	)		(1,736,193	)
Adjustment from contract value to fair value for fully benefit-responsive investment contracts		13,268,753			3,683,181


Net assets available for benefits per the Form 5500	$	3,037,192,039		$	2,706,602,941

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, 2020:


Net increase in net assets available for benefits per the financial statements	$	321,167,093
Adjustment from contract value to fair value for fully benefit-responsive investment contracts as of the current year-end		13,268,753
Adjustment from contract value to fair value for fully benefit-responsive investment contracts as of the prior year-end		(3,683,181	)
Less: Net increase in defaulted notes receivable from Participants		(35,009	)
Less: Interest income of defaulted notes receivable from Participants		(128,558	)


Total net income per the Form 5500	$	330,589,098

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, 2020 and 2019, 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 2017.

Ameren Corporation

Savings Investment Plan

Notes to Financial Statements

December 31, 2020 and 2019

8.	Subsequent Events

In compliance with the SECURE Act, the Company adopted the provision which affects the eligibility of part-time employees to participate in salary deferrals under the Plan. Effective January 1, 2021, the Plan allows part-time employees to participate in the Plan if they complete three consecutive 12-month periods, each with at least 500 hours of service. In order to determine eligibility, the Company began tracking hours on January 1, 2021. Twelve month periods beginning before January 1, 2021 are not taken into account.

Ameren Corporation Savings Investment Plan

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

December 31, 2020

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003


(a)	(b) Identity of issue, borrower, lessor, or similar party	(c) Description of investment including maturity date, rate of interest, collateral, par, or maturity value		(d) Cost		(e) Current value

	Interest-bearing Cash
	State Street Global Advisors		SSGA Short Term Investment Fund	$	7,292,976.52	$	7,292,976.52

	Total Interest-bearing Cash				7,292,976.52		7,292,976.52


	Mutual Funds
	American Funds Group		EuroPacific Growth Fund		118,111,476.15		175,433,039.74
*	Sands Capital Management		Touchstone Sands Capital Institutional Growth Fund		36,574,518.98		55,674,558.60
*	Pacific Investment Management Company		PIMCO Income Institutional Fund		25,034,363.97		25,509,470.41
*	Fidelity Management Trust Company		Fidelity Institutional Money Market Government Portfolio		2,592,960.67		2,592,960.67

	Total Mutual Funds				182,313,319.77		259,210,029.42


	Collective Investment Trusts
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index Retirement Fund O		103,829,964.82		111,542,760.55
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2025 Fund O		118,713,950.89		129,880,893.47
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2030 Fund O		102,855,206.02		114,564,905.10
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2035 Fund O		61,534,166.85		69,841,308.50
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2040 Fund O		61,931,282.74		71,422,082.35
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2045 Fund O		62,019,866.29		72,434,944.68
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2050 Fund O		57,142,163.00		67,066,751.01
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2055 Fund O		36,724,974.84		43,068,897.43
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2060 Fund O		9,899,709.60		11,490,380.88
*	BlackRock Institutional Trust Company, N.A.		BlackRock LifePath Index 2065 Fund O		528,268.30		596,408.43
*	BlackRock Institutional Trust Company, N.A.		BlackRock Equity Index Fund F		325,498,007.15		375,856,472.98
*	BlackRock Institutional Trust Company, N.A.		BlackRock Russell 2500 Index Fund F		127,977,658.34		164,922,160.87
*	BlackRock Institutional Trust Company, N.A.		BlackRock MSCI ACWI ex-US IMI Index Fund F		48,655,118.23		57,647,785.05
*	BlackRock Institutional Trust Company, N.A.		BlackRock US Debt Index Fund F		72,700,381.99		72,644,631.42
*	BlackRock Institutional Trust Company, N.A.		BlackRock TIPS Bond Index Fund M		24,372,063.03		27,258,503.28
*	Wells Fargo Bank, N.A.		Wells Fargo Fixed Income Fund F		126,111,608.28		137,335,848.71
*	Wells Fargo Bank, N.A.		Wells Fargo Fixed Income Fund L		175,381,612.06		196,936,787.11
*	Wells Fargo Bank, N.A.		Wells Fargo/BlackRock Short Term Investment Fund		26,350,190.71		26,350,190.71
*	Robeco Trust Company		Boston Partners Large Cap Value Equity Fund E		81,611,422.73		116,706,721.91
*	Hand Benefits and Trust Company		Snyder Capital Small/Mid Cap Value Fund R1		47,018,375.81		64,514,616.56
*	Wellington Management Company LLP		Wellington CIF II Core Plus Bond Portfolio		72,262,949.22		76,521,158.50

	Total Collective Investment Trusts				1,743,118,940.90		2,008,604,209.50


	Common Stocks
*	Ameren Corporation		4,248,582 Shares		200,273,215.25		331,644,310.92
	SPOTIFY TECH SA		3,884 Shares		1,042,597.91		1,222,139.44
	TENCENT HLDGS LTD		15,197 Shares		793,017.61		1,105,599.91
	SHOPIFY INC CL A		1,974 Shares		1,057,091.52		2,234,469.30
	ATLASSIAN CORP PLC CLS A		3,769 Shares		727,043.85		881,456.03
	ADYEN BV		1,122 Shares		1,022,118.78		2,611,166.91
	ADOBE INC		5,923 Shares		613,400.20		2,962,210.76
	AIRBNB INC CLASS A		540 Shares		41,181.23		79,272.00
	ALPHABET INC CL C		1,878 Shares		1,337,357.72		3,290,030.64
	ALPHABET INC CL A		1,307 Shares		749,516.81		2,290,700.48
	AMAZON.COM INC		2,359 Shares		2,734,847.45		7,683,097.87
	AMERICAN TOWER CORP		4,723 Shares		980,246.98		1,060,124.58
	APPLE INC		39,719 Shares		1,361,967.19		5,270,314.11
	ASTRAZENECA PLC SPONS ADR		30,430 Shares		1,199,140.81		1,521,195.70
	CHIPOTLE MEXICAN GRILL IN		839 Shares		625,692.86		1,163,449.69
	COSTCO WHOLESALE CORP		5,021 Shares		809,032.66		1,891,812.38
	COUPA SOFTWARE INC		3,216 Shares		585,240.14		1,089,934.56
	DANAHER CORP		6,314 Shares		902,628.49		1,402,591.96
	DEXCOM INC		2,323 Shares		436,893.16		858,859.56
	EDWARDS LIFESCIENCES CORP		15,298 Shares		1,217,604.57		1,395,636.54
	FACEBOOK INC CL A		14,592 Shares		1,699,491.21		3,985,950.72
	GUARDANT HEALTH INC		2,281 Shares		187,695.42		293,975.28
	HOME DEPOT INC		6,818 Shares		1,087,418.98		1,810,997.16
	HUMANA INC		2,388 Shares		891,694.34		979,724.76
	INTUITIVE SURGICAL INC		1,618 Shares		917,385.29		1,323,685.80
	KERING UNSPONSORED ADR		23,679 Shares		1,223,293.90		1,715,543.55
	ESTEE LAUDER COS INC CL A		6,479 Shares		831,938.04		1,724,645.01
	LILLY (ELI) & CO		7,456 Shares		992,963.22		1,258,871.04
	LULULEMON ATHLETICA INC		6,242 Shares		1,207,915.72		2,172,403.26

Ameren Corporation Savings Investment Plan

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

December 31, 2020

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003


(a)	(b) Identity of issue, borrower, lessor, or similar party	(c) Description of investment including maturity date, rate of interest, collateral, par, or maturity value		(d) Cost		(e) Current value

	MASTERCARD INC CL A		6,744 Shares		535,326.15		2,407,203.36
	MATCH GROUP INC		11,852 Shares		1,239,044.56		1,791,903.88
	MICROSOFT CORP		23,247 Shares		2,159,796.59		5,170,597.74
	NETFLIX INC		7,628 Shares		1,391,755.01		4,124,688.44
	NIKE INC CL B		20,329 Shares		1,226,213.66		2,875,943.63
	NVIDIA CORP		6,796 Shares		1,109,203.82		3,548,871.20
	PAYPAL HLDGS INC		12,135 Shares		1,394,360.67		2,842,017.00
	RINGCENTRAL INC CL A		3,180 Shares		905,167.58		1,205,124.60
	S&P GLOBAL INC		3,563 Shares		459,205.31		1,171,264.99
	SALESFORCE.COM INC		20,756 Shares		2,099,805.19		4,618,832.68
	SVCSNOW INC		1,194 Shares		300,600.27		657,213.42
	SNOWFLAKE INC CL A		2,287 Shares		749,587.32		643,561.80
	SPLUNK INC		7,132 Shares		469,279.93		1,211,655.48
	SQUARE INC CL A		7,136 Shares		1,261,141.19		1,553,079.04
	TJX COMPANIES INC NEW		17,365 Shares		1,141,535.88		1,185,855.85
	TELADOC HEALTH INC		8,146 Shares		1,552,015.84		1,628,874.16
	TESLA INC		11,325 Shares		1,369,166.65		7,991,712.75
	TRADE DESK INC		2,063 Shares		720,679.74		1,652,463.00
	TWILIO INC CLASS A		6,342 Shares		1,045,017.09		2,146,767.00
	UBER TECH INC		46,884 Shares		1,761,080.54		2,391,084.00
	UNION PACIFIC CORP		4,506 Shares		838,635.25		938,239.32
	VERTEX PHARMACEUTICALS IN		4,691 Shares		735,349.27		1,108,670.94
	VISA INC CL A		13,473 Shares		838,639.14		2,946,949.29
	WORKDAY INC CL A		7,343 Shares		912,781.62		1,759,456.23
	ADIENT PLC		34,552 Shares		1,556,590.56		1,201,373.04
	AERCAP HLDGS NV		54,093 Shares		1,702,562.44		2,465,558.94
	SUNCOR ENERGY INC		152,089 Shares		3,469,417.97		2,552,053.42
	LIBERTY GLOBAL PLC CL C		146,277 Shares		3,142,748.94		3,459,451.05
	AFFILIATED MANAGERS GRP I		16,014 Shares		2,056,262.84		1,628,623.80
	AIR LEASE CORP CL A		43,219 Shares		1,421,972.85		1,919,787.98
	ALLIANCE DATA SYS CORP		20,861 Shares		2,405,777.20		1,545,800.10
	AMERIPRISE FIN INC		20,866 Shares		2,271,799.19		4,054,889.78
	ARROW ELECTRONICS INC		27,860 Shares		1,949,421.21		2,710,778.00
	ASSURANT INC		19,387 Shares		1,802,239.56		2,640,897.14
	BERRY GLOBAL GROUP INC		52,783 Shares		1,826,523.41		2,965,876.77
	BROADCOM INC		9,916 Shares		1,944,165.50		4,341,720.60
	CELANESE CORP		34,816 Shares		2,720,283.17		4,523,991.04
	CENTENE CORP		65,329 Shares		3,960,922.47		3,921,699.87
	COMMSCOPE HLDG CO INC		60,395 Shares		1,379,063.39		809,293.00
	CONCENTRIX CORP		17,755 Shares		993,603.93		1,752,418.50
	CROWN HLDGS INC		42,090 Shares		2,319,800.15		4,217,418.00
	FLEX LTD		166,462 Shares		2,269,258.90		2,992,986.76
	DELL TECH INC CL C		57,109 Shares		2,237,393.92		4,185,518.61
	EOG RESOURCES INC		23,882 Shares		1,641,417.04		1,190,995.34
	GRACE W R & CO		24,385 Shares		1,126,619.85		1,336,785.70
	HCA HEALTHCARE INC		30,473 Shares		2,792,213.51		5,011,589.58
	HANESBRANDS INC		136,367 Shares		1,673,124.89		1,988,230.86
	LINCOLN NATIONAL CORP		67,798 Shares		2,925,549.56		3,410,917.38
	NRG ENERGY INC		77,979 Shares		2,773,416.10		2,928,111.45
	O-I GLASS INC		60,761 Shares		684,538.12		723,055.90
	QUANTA SVCS INC		48,351 Shares		1,693,149.24		3,482,239.02
	QURATE RETAIL INC		134,362 Shares		1,753,412.38		1,473,951.14
	SYNNEX CORP		17,698 Shares		992,405.84		1,441,325.12
	UNITED RENTALS INC		20,748 Shares		2,687,483.08		4,811,668.68
	UNIVAR INC		67,797 Shares		659,314.88		1,288,820.97
	WESTERN DIGITAL CORP		65,720 Shares		3,246,419.67		3,640,230.80
	WHIRLPOOL CORP		20,738 Shares		3,133,640.57		3,743,001.62
	XPO LOGISTICS INC		38,332 Shares		2,297,882.77		4,569,174.40
	ESSENT GROUP LTD		17,452 Shares		652,615.64		753,926.40
	NOMAD FOODS LTD		14,191 Shares		301,350.10		360,735.22
	INTL GAME TECH PLC		16,238 Shares		107,133.47		275,071.72
	NATIONAL ENERGY SVCS REUN		13,870 Shares		128,713.34		137,729.10
	ASSURED GUARANTY LTD		14,840 Shares		453,562.97		467,311.60
	JAZZ PHARMA PLC		2,388 Shares		355,597.72		394,139.40
	CENOVUS ENERGY INC		35,908 Shares		222,953.86		216,884.32

Ameren Corporation Savings Investment Plan

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

December 31, 2020

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003


(a)	(b) Identity of issue, borrower, lessor, or similar party	(c) Description of investment including maturity date, rate of interest, collateral, par, or maturity value		(d) Cost		(e) Current value

	ICON PLC		2,501 Shares		359,916.70		487,644.98
	ACCO BRANDS CORP		33,362 Shares		389,756.12		281,908.90
	ABM INDU INC		13,245 Shares		429,231.60		501,190.80
	AGNC INVESTMENT CORP		20,908 Shares		357,428.79		326,164.80
	AES CORP		19,973 Shares		280,076.29		469,365.50
	ASGN INC		10,547 Shares		762,056.74		880,990.91
	AECOM		5,790 Shares		197,013.83		288,226.20
	AEGION CORP		12,571 Shares		244,179.79		238,723.29
	ALLEGHANY CORP DEL		790 Shares		478,154.41		476,915.10
	AMERICOLD REALTY TR		5,185 Shares		189,967.10		193,556.05
	ARES COMMERCIAL REAL ESTA		10,535 Shares		138,734.09		125,471.85
	ARROW ELECTRONICS INC		4,561 Shares		330,745.80		443,785.30
	ASSURANT INC		2,578 Shares		276,432.40		351,175.16
	AVANTOR INC		21,251 Shares		316,677.62		598,215.65
	BMC STK HLDGS INC		6,922 Shares		161,411.43		371,572.96
	BWX TECH INC		6,587 Shares		375,030.73		397,064.36
	BANKUNITED INC		10,308 Shares		360,030.20		358,512.24
	BELDEN INC		10,989 Shares		610,864.63		460,439.10
	BLACKSTONE MORTGAGE TR CL		8,244 Shares		256,511.64		226,957.32
	BOOZ ALLEN HAMILTON HLDG		2,808 Shares		156,893.44		244,801.44
	CDK GLOBAL INC		6,608 Shares		351,440.34		342,492.64
	CALLAWAY GOLF CO		1,631 Shares		32,088.83		39,160.31
	CENTERPOINT ENERGY INC		11,137 Shares		225,270.17		241,004.68
	CHAMPIONX CORP		42,167 Shares		511,220.89		645,155.10
	CHANGE HEALTHCARE INC		48,861 Shares		594,831.84		911,257.65
	COHERENT INC		1,958 Shares		300,391.81		293,739.16
	COLUMBIA BANKING SYS INC		4,540 Shares		165,466.15		162,986.00
	COMMSCOPE HLDG CO INC		20,178 Shares		352,705.71		270,385.20
	CONCENTRIX CORP		7,422 Shares		363,033.59		732,551.40
	FRESH DEL MONTE PRODUCE I		18,379 Shares		507,507.49		442,382.53
	COUSINS PROPERTIES INC		19,221 Shares		591,279.21		643,903.50
	COVANTA HLDGS CORP		13,762 Shares		120,268.60		180,695.06
	AMDOCS LTD		3,736 Shares		245,264.34		264,994.48
	CURTISS WRIGHT CORPORATIO		3,975 Shares		421,618.97		462,491.25
	DXC TECH CO		7,352 Shares		98,447.75		189,314.00
	WHITE MOUNTAINS INS GROUP		441 Shares		421,095.99		441,291.06
	FLEX LTD		18,448 Shares		212,700.48		331,695.04
	DIAMONDBACK ENERGY INC		12,423 Shares		681,208.27		601,273.20
	EVEREST REINSURANCE GROUP		1,711 Shares		392,087.63		400,527.99
	AXIS CAPITAL HLDGS LTD		5,444 Shares		297,170.54		274,323.16
	RENAISSANCERE HLDGS LTD		1,658 Shares		286,279.18		274,929.56
	EAST WEST BANCORP INC		6,175 Shares		335,133.33		313,134.25
	EMCOR GROUP INC		2,238 Shares		150,968.10		204,687.48
	ENERGIZER HLDGS INC		15,199 Shares		752,610.45		641,093.82
	ENERSYS INC		8,575 Shares		587,934.02		712,239.50
	ENVISTA HLDGS CORP		24,327 Shares		558,658.77		820,549.71
	EVERCORE INC A		6,514 Shares		474,911.64		714,194.96
	EVERTEC INC		9,977 Shares		290,540.37		392,295.64
	EXTENDED STAY AMERICA INC		13,416 Shares		184,375.17		198,690.96
	FMC CORP NEW		2,894 Shares		232,967.25		332,607.42
	FTI CONSULTING INC		5,488 Shares		470,659.07		613,119.36
	FEDERAL AGRI MTG NON VTG		2,138 Shares		151,596.28		158,746.50
	FIFTH THIRD BANCORP		7,053 Shares		118,248.56		194,451.21
	FIRST AMERICAN FIN CORP		6,424 Shares		301,462.53		331,671.12
	FIRST CITIZENS BANCSHARES		438 Shares		179,584.93		251,530.26
	FIRST HAWAIIAN INC		17,699 Shares		425,884.40		417,342.42
	FIRST HORIZON CORP		17,828 Shares		165,233.09		227,485.28
	FIRST MERCHANTS CORP		7,108 Shares		295,455.01		265,910.28
	FIRSTCASH INC		10,366 Shares		824,142.07		726,034.64
	FOOT LOCKER INC		12,848 Shares		424,648.14		519,573.12
	FRONTDOOR INC		11,874 Shares		458,746.75		596,193.54
	GENTEX CORP		15,234 Shares		351,416.31		516,889.62
	GLOBE LIFE INC		2,818 Shares		209,518.58		267,597.28
	GRAFTECH INTL LTD		27,975 Shares		261,029.27		298,213.50
	GRAPHIC PACKAGING HLDGS C		57,857 Shares		799,782.78		980,097.58

Ameren Corporation Savings Investment Plan

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

December 31, 2020

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003


(a)	(b) Identity of issue, borrower, lessor, or similar party	(c) Description of investment including maturity date, rate of interest, collateral, par, or maturity value		(d) Cost		(e) Current value

	HALLIBURTON CO		20,519 Shares		204,664.06		387,809.10
	HANESBRANDS INC		14,408 Shares		127,067.52		210,068.64
	HANOVER INSURANCE GROUP I		1,560 Shares		185,545.24		182,395.20
	HARLEY-DAVIDSON INC		14,995 Shares		411,638.70		550,316.50
	HARSCO CORP		18,756 Shares		253,921.57		337,232.88
	HELMERICH & PAYNE INC		16,648 Shares		370,424.33		385,567.68
	HILLENBRAND INC		6,835 Shares		159,677.51		272,033.00
	HOWMET AEROSPACE INC		12,708 Shares		201,049.52		362,686.32
	HUNTINGTON BANCSHARES INC		71,139 Shares		767,365.65		898,485.57
	HUNTSMAN CORP		8,543 Shares		161,050.42		214,771.02
	INGEVITY CORP		5,753 Shares		238,460.64		435,674.69
	INSIGHT ENTERPRISES INC		7,824 Shares		404,926.62		595,328.16
	INTERDIGITAL INC		7,518 Shares		445,975.35		456,192.24
	JONES LANG LASALLE INC		1,630 Shares		162,670.49		241,843.10
	KAR AUCTION SVCS INC		26,815 Shares		546,575.33		499,027.15
	KEYCORP		15,022 Shares		236,610.18		246,511.02
	KORN FERRY		4,666 Shares		142,899.86		202,971.00
	LCI INDU		4,143 Shares		375,058.66		537,264.24
	LPL FINL HLDGS INC		5,405 Shares		365,759.76		563,309.10
	LANDSTAR SYS INC		1,180 Shares		132,787.30		158,898.80
	LITHIA MOTORS INC CL A		3,560 Shares		397,056.87		1,041,905.20
	STEVEN MADDEN LTD		15,606 Shares		496,667.04		551,203.92
	MASTEC INC		3,952 Shares		128,929.99		269,447.36
	MAXIMUS INC		1,572 Shares		104,765.44		115,054.68
	MINERALS TECH INC		2,789 Shares		185,075.56		173,252.68
	MOLINA HEALTHCARE INC		3,109 Shares		428,876.06		661,222.12
	MOSAIC CO NEW		20,555 Shares		411,905.63		472,970.55
	MR COOPER GROUP INC		16,026 Shares		143,596.73		497,286.78
	NCR CORP		16,631 Shares		412,315.88		624,826.67
	NMI HLDGS INC		10,717 Shares		213,427.98		242,740.05
	NATIONAL GEN HLDGS CORP		13,333 Shares		334,122.65		455,721.94
	NAVIENT CORP		61,651 Shares		641,778.95		605,412.82
	NEXSTAR MEDIA GROUP INC A		4,212 Shares		427,845.79		459,908.28
	ON SEMICONDUCTOR CORP		21,454 Shares		449,791.95		702,189.42
	OWENS CORNING INC		3,951 Shares		243,170.77		299,327.76
	PRA GROUP INC		7,555 Shares		299,724.31		299,631.30
	PPD INC		10,009 Shares		274,464.22		342,507.98
	PENNYMAC FIN SVCS INC		3,037 Shares		148,494.35		199,287.94
	PQ GROUP HLDGS INC		22,055 Shares		357,898.24		314,504.30
	PROASSURANCE CORPORATION		15,329 Shares		280,401.47		272,702.91
	QORVO INC		3,835 Shares		322,915.79		637,645.45
	R1 RCM INC		16,709 Shares		168,819.26		401,350.18
	RACKSPACE TECH INC		17,732 Shares		349,263.40		337,971.92
	REGIONS FIN CORP		19,295 Shares		280,911.31		311,035.40
	REINSURANCE GROUP OF AMER		3,013 Shares		370,330.86		349,206.70
	SL GREEN REALTY CORP REIT		2,078 Shares		172,405.06		123,807.24
	SLM CORP		101,837 Shares		1,048,953.25		1,261,760.43
	SALLY BEAUTY HLDGS INC		15,850 Shares		204,172.37		206,684.00
	SCHWEITZER-MAUDUIT INTL I		14,602 Shares		558,220.68		587,146.42
	SCIENCE APPLICATIONS INTL		9,028 Shares		704,301.07		854,409.92
	SKECHERS USA INC CL A		14,241 Shares		422,096.36		511,821.54
	SOTERA HEALTH CO		9,461 Shares		222,384.30		259,609.84
	SOUTH STATE CORP		3,273 Shares		277,776.36		236,637.90
	SPECTRUM BRANDS HLDGS INC		4,538 Shares		216,313.73		358,411.24
	SPIRIT RLTY CAP INC		5,713 Shares		218,628.07		229,491.21
	STANDARD MOTOR PRODUCTS I		3,306 Shares		156,987.68		133,760.76
	STARWOOD PROPERTY TR INC		19,373 Shares		400,151.10		373,898.90
	STEEL DYNAMICS INC		6,895 Shares		243,582.06		254,218.65
	STRIDE INC		8,814 Shares		199,444.06		187,121.22
	SYKES ENTERPRISES INC		5,804 Shares		174,890.70		218,636.68
	SYNOVUS FINANICAL CORP.		11,600 Shares		440,965.42		375,492.00
	SYNNEX CORP		7,420 Shares		366,796.06		604,284.80
	SYNEOS HEALTH INC		11,590 Shares		578,988.94		789,626.70
	TEMPUR SEALY INTL INC		10,358 Shares		128,011.91		279,666.00
	TEREX CORP		8,068 Shares		143,263.91		281,492.52

Ameren Corporation Savings Investment Plan

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

December 31, 2020

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003


(a)	(b) Identity of issue, borrower, lessor, or similar party	(c) Description of investment including maturity date, rate of interest, collateral, par, or maturity value		(d) Cost		(e) Current value

	TEXTRON INC		6,432 Shares		268,579.05		310,858.56
	TOLL BROTHERS INC		4,394 Shares		161,340.67		191,007.18
	TTEC HLDGS INC		6,652 Shares		251,406.90		485,130.36
	ULTRA CLEAN HLDGS INC		11,831 Shares		226,621.34		368,535.65
	UMPQUA HLDGS CORP		17,237 Shares		285,457.83		260,968.18
	UNISYS CORP NEW		16,737 Shares		199,863.04		329,384.16
	UNIVERSAL CORP		8,433 Shares		457,499.08		409,928.13
	VALVOLINE INC		35,059 Shares		717,541.20		811,265.26
	VISTRA CORP		21,693 Shares		474,465.64		426,484.38
	WALKER & DUNLOP INC		9,291 Shares		528,966.83		854,957.82
	WESCO INTL INC		15,099 Shares		679,789.75		1,185,271.50
	WESTERN DIGITAL CORP		4,116 Shares		187,756.59		227,985.24
	WESTROCK CO		5,709 Shares		214,195.70		248,512.77
	WORLD FUEL SVCS CORP		21,958 Shares		527,391.27		684,211.28
	WYNDHAM DESTINATIONS INC		5,177 Shares		156,781.56		232,240.22
	YELP INC		11,555 Shares		360,388.88		377,501.85
	STERIS PLC		5,349 Shares		663,778.41		1,013,849.46
	FIRSTSVCS CORP		5,915 Shares		225,493.01		808,935.40
	HORIZON THERAPEUTICS PLC		23,523 Shares		456,301.64		1,720,707.45
	ABIOMED INC		2,129 Shares		525,077.20		690,221.80
	ACADIA HEALTHCARE CO INC		11,594 Shares		557,046.19		582,714.44
	ADVANCE AUTO PARTS INC		5,553 Shares		791,676.38		874,653.03
	ALARM.COM HLDGS INC		12,410 Shares		798,597.09		1,283,814.50
	AMEDISYS INC		3,950 Shares		490,732.13		1,158,653.50
	ARES MANAGEMENT CORP CL A		16,851 Shares		578,406.01		792,839.55
	ASPEN TECH		7,634 Shares		752,614.69		994,328.50
	AVALARA INC		6,773 Shares		452,308.73		1,116,799.97
	AXON ENTERPRISE INC		9,020 Shares		797,248.03		1,105,220.60
	BJS WHSL CLUB HLDGS INC		29,193 Shares		782,728.19		1,088,315.04
	BWX TECH INC		30,376 Shares		1,413,600.61		1,831,065.28
	BIO TECHNE CORP		3,658 Shares		1,007,620.69		1,161,597.90
	BLUEPRINT MEDICINES CORP		4,590 Shares		539,471.87		514,768.50
	BOOZ ALLEN HAMILTON HLDG		6,203 Shares		219,112.28		540,777.54
	BRIGHT HORIZONS FAMILY SO		5,872 Shares		690,390.00		1,015,797.28
	BRINKS CO		21,270 Shares		1,437,919.09		1,531,440.00
	BROOKS AUTOMATION INC		16,400 Shares		588,592.76		1,112,740.00
	BUILDERS FIRSTSOURCE		23,588 Shares		786,903.09		962,626.28
	BURLINGTON STORES INC		2,520 Shares		411,853.67		659,106.00
	CABLE ONE INC		525 Shares		427,859.23		1,169,553.00
	CAMECO CORP		59,878 Shares		453,478.57		802,365.20
	RITCHIE BROS AUCTIONEERS		18,582 Shares		656,513.39		1,292,378.10
	CREE INC		8,025 Shares		476,578.02		849,847.50
	CROWN HLDGS INC		15,270 Shares		951,085.70		1,530,054.00
	HELEN OF TROY LTD		4,780 Shares		954,389.53		1,062,068.20
	ENCOMPASS HEALTH CORP		19,893 Shares		1,072,018.63		1,644,952.17
	ENTEGRIS INC		7,576 Shares		389,039.14		728,053.60
	ETSY INC		10,325 Shares		503,114.32		1,836,920.75
	EURONET WORLDWIDE INC		8,150 Shares		768,608.48		1,181,098.00
	FIRSTCASH INC		8,799 Shares		521,743.61		616,281.96
	GENERAC HLDGS INC		4,097 Shares		452,055.26		931,698.77
	GODADDY INC CL A		11,526 Shares		823,570.68		956,081.70
	GRAND CANYON EDUCATION IN		18,041 Shares		1,534,226.90		1,679,797.51
	GUIDEWIRE SOFTWARE INC		4,759 Shares		553,284.56		612,626.07
	HALOZYME THERAPEUTICS INC		28,897 Shares		477,004.21		1,234,190.87
	HEALTHEQ INC		16,698 Shares		846,811.47		1,164,017.58
	HEICO CORP CL A		4,976 Shares		214,180.31		582,490.56
	INSMED INC		15,175 Shares		521,942.67		505,175.75
	INSPIRE MEDICAL SYS INC		2,780 Shares		549,821.01		522,890.20
	INSULET CORP		4,312 Shares		451,628.57		1,102,276.56
	iShares Trust: iShares Ru		1,790 Shares		162,024.47		183,743.50
	iShares Russell 2000 Grow		3,210 Shares		771,690.05		920,307.00
	J2 GLOBAL INC		7,984 Shares		575,907.40		779,956.96
	LIGAND PHARMACEUTICALS		8,198 Shares		813,483.54		815,291.10
	LINCOLN ELECTRIC HLDGS IN		4,863 Shares		331,804.23		565,323.75
	LIVE NATION ENTERTAINMENT		10,920 Shares		459,430.32		802,401.60

Ameren Corporation Savings Investment Plan

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

December 31, 2020

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003


(a)	(b) Identity of issue, borrower, lessor, or similar party	(c) Description of investment including maturity date, rate of interest, collateral, par, or maturity value		(d) Cost		(e) Current value

	LIVERAMP HLDGS INC		13,016 Shares		740,318.17		952,641.04
	MARTIN MARIETTA MATERIALS		5,890 Shares		1,182,017.38		1,672,583.30
	MASIMO CORP		2,310 Shares		405,468.94		619,957.80
	MAXIMUS INC		5,590 Shares		375,550.16		409,132.10
	MERCURY SYS INC		15,777 Shares		1,234,890.86		1,389,322.62
	MERIT MEDICAL SYS INC		12,630 Shares		633,365.56		701,091.30
	MONGODB INC CL A		2,580 Shares		410,945.55		926,323.20
	NATIONAL INSTRUMENT CORP		17,800 Shares		730,646.71		782,132.00
	NATIONAL VISION HLDGS INC		16,292 Shares		421,068.53		737,864.68
	NEW FORTRESS ENERGY INC		11,567 Shares		587,734.70		619,875.53
	NICE LTD SPON ADR		5,813 Shares		657,588.03		1,648,218.02
	NOVANTA INC		4,680 Shares		290,185.42		553,269.60
	PENUMBRA INC		6,101 Shares		903,784.87		1,067,675.00
	PROOFPOINT INC		4,930 Shares		617,382.87		672,501.30
	PURE STORAGE INC CL A		62,655 Shares		1,219,697.21		1,416,629.55
	SOLAREDGE TECH INC		3,933 Shares		430,677.67		1,255,098.96
	STAR PEAK ENERGY TRANSITI		20,185 Shares		369,367.20		412,985.10
	TELEDYNE TECH INC		2,156 Shares		448,880.83		845,108.88
	TELEFLEX INC		2,290 Shares		616,355.40		942,495.30
	10X GENOMICS INC		6,344 Shares		990,537.91		898,310.40
	TERMINIX GLOBAL HLDGS INC		13,660 Shares		618,121.63		696,796.60
	TREX CO INC		15,464 Shares		567,914.81		1,294,646.08
	TWIST BIOSCIENCE CORP		3,033 Shares		336,168.60		428,532.57
	ULTA BEAUTY INC		1,760 Shares		356,683.48		505,401.60
	VARONIS SYS INC		5,650 Shares		446,890.45		924,396.50
	VERACYTE INC		23,336 Shares		630,253.84		1,142,063.84
	VIRTU FIN INC- CL A		29,245 Shares		596,965.85		736,096.65
	WESTERN ALLIANCE BANCORP		9,390 Shares		554,816.68		562,930.50
	ZENDESK INC		5,270 Shares		649,745.00		754,242.40
	ZYNGA INC		97,380 Shares		622,167.29		961,140.60
	CRISPR THERAPEUTICS AG		2,270 Shares		140,937.88		347,559.70
	HORIZON THERAPEUTICS PLC		19,024 Shares		595,316.49		1,391,605.60
	TRILLIUM THERAPEUTICS INC		17,588 Shares		254,474.31		258,719.48
	BIOHAVEN PHARMACEUTICAL H		11,322 Shares		740,185.79		970,408.62
	AMBARELLA INC		10,104 Shares		659,588.57		927,749.28
	NORWEGIAN CRUISE LINE HLD		29,696 Shares		686,685.21		755,169.28
	ASGN INC		7,811 Shares		647,072.72		652,452.83
	ALLEGIANT TRAVEL CO		3,575 Shares		494,036.49		676,533.00
	ALLY FIN INC		20,780 Shares		478,613.07		741,014.80
	ALPHATEC HLDGS INC		33,189 Shares		354,875.93		481,904.28
	ALTRA INDU MOTION CORP		11,962 Shares		487,113.17		663,053.66
	AMEDISYS INC		944 Shares		135,183.23		276,903.52
	ANAPLAN INC		14,692 Shares		937,809.25		1,055,620.20
	ARROWHEAD PHARMACEUTICALS		5,560 Shares		266,909.87		426,618.80
	AVALARA INC		1,723 Shares		295,832.38		284,105.47
	AXONICS MODULATION TECH I		12,208 Shares		582,046.26		609,423.36
	BLUEPRINT MEDICINES CORP		2,092 Shares		206,878.61		234,617.80
	BOSTON BEER COMPANY CL A		238 Shares		98,937.82		236,641.02
	CAESARS ENTERTAINMENT INC		11,723 Shares		606,429.49		870,667.21
	CARDLYTICS INC		3,156 Shares		320,381.73		450,582.12
	CHART INDU INC		6,384 Shares		566,608.11		751,971.36
	CHEESECAKE FACTORY INC		9,401 Shares		355,163.58		348,401.06
	CREE INC		6,698 Shares		406,392.51		709,318.20
	DECKERS OUTDOOR CORP		3,115 Shares		681,312.73		893,319.70
	DENALI THERAPEUTICS INC		3,399 Shares		217,291.27		284,700.24
	ELF BEAUTY INC		36,938 Shares		722,055.08		930,468.22
	ENPHASE ENERGY INC		3,822 Shares		225,538.62		670,646.34
	EXACT SCIENCES CORP		4,795 Shares		640,771.97		635,289.55
	FATE THERAPEUTICS INC		7,732 Shares		249,355.91		703,070.76
	FIRST SOLAR INC		4,635 Shares		332,299.72		458,494.20
	FIVE BELOW INC		2,604 Shares		348,486.77		455,647.92
	FIVE9 INC		2,817 Shares		126,234.59		491,284.80
	FLOOR & DECOR HLDGS INC		12,432 Shares		646,511.60		1,154,311.20
	HAIN CELESTIAL GROUP INC		25,044 Shares		935,321.69		1,005,516.60
	INPHI CORP		2,423 Shares		194,661.19		388,818.81

Ameren Corporation Savings Investment Plan

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

December 31, 2020

Name of plan sponsor: Ameren Corporation

Employer identification number: 43-1723446

Three-digit plan number: 003


(a)	(b) Identity of issue, borrower, lessor, or similar party	(c) Description of investment including maturity date, rate of interest, collateral, par, or maturity value		(d) Cost		(e) Current value

	INSPIRE MEDICAL SYS INC		5,484 Shares		325,318.29		1,031,485.56
	INSULET CORP		4,151 Shares		660,114.18		1,061,120.13
	LHC GROUP INC		1,057 Shares		141,695.25		225,479.24
	LEMONADE INC		3,049 Shares		223,814.28		373,502.50
	LITTELFUSE INC		4,338 Shares		745,725.54		1,104,715.08
	MACOM TECH SOLUTIONS HLDG		17,198 Shares		576,993.59		946,577.92
	MASONITE WORLDWIDE HLDGS		3,258 Shares		170,750.22		320,391.72
	MAXLINEAR INC		11,770 Shares		297,730.23		449,496.30
	Mirati Therapeutics Inc		1,370 Shares		133,255.75		300,906.80
	MONGODB INC CL A		2,147 Shares		571,505.99		770,858.88
	NANOSTRING TECH INC		3,421 Shares		103,075.52		228,796.48
	NATERA INC		11,588 Shares		409,922.13		1,153,237.76
	NATIONAL VISION HLDGS INC		13,907 Shares		399,702.21		629,848.03
	NUANCE COMM INC		35,651 Shares		710,877.33		1,571,852.59
	ONEMAIN HLDGS INC		17,224 Shares		545,960.25		829,507.84
	PENN NATIONAL GAMING		5,418 Shares		384,716.99		467,952.66
	PERFORMANCE FOOD GROUP CO		10,946 Shares		406,733.88		521,139.06
	PINNACLE FINL PARTNERS IN		8,252 Shares		446,119.22		531,428.80
	PLUG POWER INC		16,704 Shares		188,347.38		566,432.64
	Q2 HLDGS INC		5,136 Shares		314,745.55		649,858.08
	REPLIGEN		2,357 Shares		351,652.34		451,671.91
	RINGCENTRAL INC CL A		2,182 Shares		546,131.94		826,912.54
	SVB FINL GROUP		4,892 Shares		1,146,015.03		1,897,264.36
	SERES THERAPEUTICS INC		6,324 Shares		202,904.91		154,938.00
	SHAKE SHACK INC - CLASS A		8,207 Shares		597,803.09		695,789.46
	SI-BONE INC		8,793 Shares		258,955.61		262,910.70
	SITEONE LANDSCAPE SUPPLY		1,429 Shares		169,984.10		226,682.27
	SONOS INC		16,163 Shares		343,367.87		378,052.57
	SUNNOVA ENERGY INTL INC		6,024 Shares		224,594.83		271,863.12
	TANDEM DIABETES CARE INC		6,643 Shares		305,575.41		635,602.24
	TAPESTRY INC		11,110 Shares		315,307.38		345,298.80
	TERADYNE INC		4,769 Shares		316,587.55		571,755.41
	TIMKEN CO		7,593 Shares		423,817.88		587,394.48
	TRADEWEB MARKETS INC A		7,319 Shares		409,553.58		457,071.55
	TREX CO INC		8,484 Shares		398,601.08		710,280.48
	ULTA BEAUTY INC		2,457 Shares		679,491.30		705,552.12
	ULTRAGENYX PHARMA INC		2,368 Shares		211,045.71		327,802.24
	VISTEON CORP		8,861 Shares		491,479.36		1,112,232.72
	YETI HLDGS INC		5,518 Shares		170,486.55		377,817.46
	ZENDESK INC		10,844 Shares		964,957.03		1,551,993.28
	ZILLOW GROUP INC		3,727 Shares		308,414.05		506,648.38
	ZSCALER INC		1,886 Shares		266,676.95		376,653.06

	Total Common Stocks				459,513,175.98		727,026,397.61

	Notes Receivable
* / **	Participants		Participant Loans		32,095,061.49		32,095,061.49

				$	2,424,333,474.66	$	3,034,228,674.54

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

**	Interest rates vary from 4.00% to 10.50% on loans maturing through 2030.

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 24, 2021

EXHIBIT INDEX


Exhibit No.		Description

23.1		Consent of Independent Registered Public Accounting Firm

Ameren (AEE) 11-KAnnual report of employee stock purchases