Prospectus supplement
(To Prospectus dated July 29, 2021)
Up to 4,000,000 shares

Common stock
Mid-America Apartment Communities, Inc.
On November 4, 2021, we entered into an ATM sales agreement, the “ATM Sales Agreement,” as may be amended or supplemented from time to time, with Wells Fargo Securities, LLC, Citigroup Global Markets Inc., Jefferies LLC, J.P. Morgan Securities LLC, KeyBanc Capital Markets Inc. and Truist Securities, Inc., or the “Agents,” and the Forward Purchasers (as defined below), relating to the offering of up to 4,000,000 shares of our common stock, par value $0.01 per share, by this prospectus supplement and the accompanying prospectus. In accordance with the terms of the ATM Sales Agreement, the Agents may sell up to 4,000,000 shares of our common acting as sales agents, forward sellers and/or principals. As of November 4, 2021, we have 4,000,000 shares of our common stock available to be offered by this prospectus supplement and the accompanying prospectus pursuant to the ATM Sales Agreement.
The ATM Sales Agreement provides that, in addition to the issuance and sale of our common stock to or through the Agents, we may enter into separate forward sale agreements with Wells Fargo Securities, LLC, Citigroup Global Markets Inc., Jefferies LLC, J.P. Morgan Securities LLC, KeyBanc Capital Markets Inc. and Truist Securities, Inc., or their respective affiliates, or the “Forward Purchasers.” In connection with any particular forward sale agreement, we expect that the relevant Forward Purchaser will attempt to borrow from third parties and, through the relevant Agent, sell a number of shares of our common stock equal to the number of shares of our common stock underlying the particular forward sale agreement. We refer to the Agents, when acting as agents for the Forward Purchasers, as the “Forward Sellers.”
We will not receive any proceeds from any sale of borrowed shares of our common stock by a Forward Seller. We currently expect to fully physically settle each forward sale agreement in which case we will expect to receive aggregate net cash proceeds at settlement equal to the number of shares of our common stock underlying the particular forward sale agreement multiplied by the relevant forward sale price. However, subject to certain exceptions, we may also elect, in our discretion, to cash settle or net share settle a particular forward sale agreement, in which case we may not receive any proceeds (in the case of cash settlement) or will not receive any proceeds (in the case of net share settlement), and we may owe cash (in the case of cash settlement) or shares of our common stock (in the case of net share settlement) to the relevant Forward Purchaser. See “Plan of Distribution” in this prospectus supplement.
We will pay the Agents an aggregate fee that will not exceed, but may be lower than, 2% of the gross sales price per share for any shares sold through them acting as our sales agents. Subject to the terms and conditions of the ATM Sales Agreement, the Agents will use their commercially reasonable efforts to sell on our behalf any shares of our common stock to be offered by us under the ATM Sales Agreement.
In connection with each forward sale agreement, the relevant Forward Seller will receive, in the form of a reduced initial forward sale price under the related forward sale agreement, a commission that will not exceed, but may be lower than, 2% of the gross sales prices of all borrowed shares of our common stock that it sells during the applicable forward selling period.
Under the terms of the ATM Sales Agreement, we also may sell shares to each of the Agents, as principal for its own account, at a price per share to be agreed upon at the time of sale. If we sell shares to any Agent acting as principal, we will enter into a separate terms agreement with the Agent setting forth the terms of such transaction, and we will describe the agreement in a separate prospectus supplement or pricing supplement.
Sales of shares of our common stock, if any, under this prospectus supplement and the accompanying prospectus may be made in sales deemed to be “at the market offerings” as defined in Rule 415 under the Securities Act of 1933, as amended, or the Securities Act, including (1) by means of ordinary brokers’ transactions on the New York Stock Exchange, or the “NYSE,” at market prices prevailing at the time of sale, in negotiated transactions or as otherwise agreed by us, the applicable agent and the applicable investor, (2) to or through any market maker or (3) on or through any other national securities exchange or facility thereof, trading facility of a securities association or national securities exchange, alternative trading system, electronic communication network or other similar market venue.
The offering of common stock pursuant to the ATM Sales Agreement will terminate upon the earlier of (1) the sale of all the shares of our common stock subject to the ATM Sales Agreement, and (2) the termination of the ATM Sales Agreement, pursuant to its terms, by the Agents, the Forward Purchasers or us.
Shares of our common stock are subject to certain restrictions on ownership and transfer intended to preserve our qualification as a real estate investment trust for federal income tax purposes. See “DESCRIPTION OF CAPITAL STOCK—Certain Matters of Corporate Governance—Ownership Limitations” in the accompanying prospectus.
Our common stock is listed on the NYSE under the trading symbol “MAA”. On November 1, 2021, the last reported sale price of our common stock on the NYSE was $201.37 per share.
Investing in our common stock involves risks. Before investing in our common stock, you should carefully read the discussion under the headings “Risk factors” beginning on page S-6 of this prospectus supplement and appearing on page 2 of the accompanying prospectus, as well as the risks described in other documents incorporated by reference in this prospectus supplement and the accompanying prospectus.
Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.
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Wells Fargo Securities | | Citigroup | | Jefferies |
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J.P. Morgan Securities | | KeyBanc Capital Markets | | Truist Securities |
November 4, 2021