Common Stock, Shares Authorized Under DRPlus Plan

[Table of Co](#i2c056a9f8317485ea6601862f5b0559f_7)[ntents](#i2c056a9f8317485ea6601862f5b0559f_7)All classes of Ameren Missouri’s and Ameren Illinois’ preferred stock are entitled to cumulative dividends, have voting rights, and are not subject to mandatory redemption. The preferred stock of Ameren’s subsidiaries is included in “Noncontrolling Interests” on Ameren’s consolidated balance sheet. The following table presents the outstanding preferred stock of Ameren Missouri and Ameren Illinois, which is redeemable at the option of the issuer, at the prices shown below as of December 31, 2021 and 2020:

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|  | Shares Outstanding |  | Redemption Price (per share) |  | 2021 |  | 2020 |
| Ameren Missouri: |  |  |  |  |  |  |  |
| Without par value and stated value of $100 per share, 25 million shares authorized |  |  |  |  |  |  |
| $3.50 Series | 130,000 shares |  | $ | 110.00  |  |  | $ | 13  |  |  | $ | 13  |  |
| $3.70 Series | 40,000 shares |  | 104.75  |  |  | 4  |  |  | 4  |  |
| $4.00 Series | 150,000 shares |  | 105.625  |  |  | 15  |  |  | 15  |  |
| $4.30 Series | 40,000 shares |  | 105.00  |  |  | 4  |  |  | 4  |  |
| $4.50 Series | 213,595 shares |  | 110.00  |  | (a) | 21  |  |  | 21  |  |
| $4.56 Series | 200,000 shares |  | 102.47  |  |  | 20  |  |  | 20  |  |
| $4.75 Series | 20,000 shares |  | 102.176  |  |  | 2  |  |  | 2  |  |
| $5.50 Series A | 14,000 shares |  | 110.00  |  |  | 1  |  |  | 1  |  |
| Total |  |   |  | $ | 80  |  |  | $ | 80  |  |
| Ameren Illinois: |  |  |  |  |  |  |  |
| With par value of $100 per share, 2 million shares authorized |  |  |  |  |  |  |
| 4.00% Series | 144,275 shares |  | $ | 101.00  |  |  | $ | 14  |  |  | $ | 14  |  |
| 4.08% Series | 45,224 shares |  | 103.00  |  |  | 5  |  |  | 5  |  |
| 4.20% Series | 23,655 shares |  | 104.00  |  |  | 2  |  |  | 2  |  |
| 4.25% Series | 50,000 shares |  | 102.00  |  |  | 5  |  |  | 5  |  |
| 4.26% Series | 16,621 shares |  | 103.00  |  |  | 2  |  |  | 2  |  |
| 4.42% Series | 16,190 shares |  | 103.00  |  |  | 2  |  |  | 2  |  |
| 4.70% Series | 18,429 shares |  | 104.30  |  |  | 2  |  |  | 2  |  |
| 4.90% Series | 73,825 shares |  | 102.00  |  |  | 7  |  |  | 7  |  |
| 4.92% Series | 49,289 shares |  | 103.50  |  |  | 5  |  |  | 5  |  |
| 5.16% Series | 50,000 shares |  | 102.00  |  |  | 5  |  |  | 5  |  |
| 6.625% Series | (b) |  | 100.00  |  |  | —  |  |  | 12  |  |
| 7.75% Series | (b) |  | 100.00  |  |  | —  |  |  | 1  |  |
| Total |  |   |  | $ | 49  |  |  | $ | 62  |  |
| Total Ameren |  |   |  | $ | 129  |  |  | $ | 142  |  |

(a)In the event of voluntary liquidation, $105.50.(b)In March 2021, Ameren Illinois redeemed its 6.625% and 7.75% series preferred stock at par.Ameren has 100 million shares of $0.01 par value preferred stock authorized, with no such shares outstanding. Ameren Missouri has 7.5 million shares of $1 par value preference stock authorized, with no such shares outstanding. Ameren Illinois has 2.6 million shares of no par value preferred stock authorized, with no such shares outstanding.AmerenUnder the DRPlus and its 401(k) plan, Ameren issued 0.5 million, 0.7 million, and 0.9 million shares of common stock in 2021, 2020, and 2019, respectively, and received proceeds of $47 million, $51 million, and $68 million for the respective years. In addition, Ameren issued 0.5 million, 0.5 million, and 0.8 million shares of common stock valued at $33 million, $38 million, and $54 million in 2021, 2020, 2019, respectively, for no cash consideration in connection with stock-based compensation.In May 2020, Ameren filed a Form S-3 registration statement with the SEC, authorizing the offering of 4 million additional shares of its common stock under the DRPlus, which expires in May 2023. Shares of common stock sold under the DRPlus are, at Ameren’s option, newly issued shares, treasury shares, or shares purchased in the open market or in privately negotiated transactions.In October 2020, Ameren, Ameren Missouri, and Ameren Illinois filed a Form S-3 shelf registration statement with the SEC, registering the issuance of an unspecified amount of certain types of securities. This registration statement expires in October 2023.In October 2018, Ameren filed a Form S-8 registration statement with the SEC, authorizing the offering of 4 million additional shares of its common stock under its 401(k) plan. Shares of common stock issuable under the 401(k) plan are, at Ameren’s option, newly issued shares, treasury shares, or shares purchased in the open market or in privately negotiated transactions.121
