Sec Form 4 Filing - STOCKERT DAVID P @ MID AMERICA APARTMENT COMMUNITIES INC. - 2019-05-10

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person STOCKERT DAVID P 2. Issuer Name and Ticker or Trading Symbol MID AMERICA APARTMENT COMMUNITIES INC. [ MAA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 6815 POPLAR AVE, SUITE 500 3. Date of Earliest Transaction (MM/DD/YY) 05/10/2019 (Street) GERMANTOWN, TN38138 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/10/2019 M 5,758 A $ 70.85 70,544 D Common Stock 05/10/2019 D 3,671 ( 1 ) D $ 111.15 66,873 D Common Stock 05/10/2019 F 680 ( 2 ) D $ 111.15 65,513 D Common Stock 60,412 I By Spouse

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Options (Right to Buy) $ 70.85 05/10/2019 M 5,758 12/01/2016 01/28/2023 Common Stock 5,758 $ 0 0 D Stock Options (Right to Buy) $ 85.08 12/01/2016 02/03/2025 Common Stock 6,198 6,198 D Stock Options (Right to Buy) $ 81.41 12/01/2016 02/01/2026 Common Stock 15,052 15,052 D Stock Option/Stock Appreciation Right $ 66.1 12/01/2016 01/31/2024 Common Stock 0 0 D Stock Option/Stock Appreciation Right $ 62.05 12/01/2016 01/25/2022 Common Stock 0 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other STOCKERT DAVID P 6815 POPLAR AVE SUITE 500 GERMANTOWN, TN38138 X Signatures /s/ Leslie Wolfgang 05/13/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On December 1, 2016, the Issuer assumed a grant of 5,758 options previously made to the Reporting Person pursuant to the Agreement and Plan of Merger dated as of August 15, 2016, by and among the Issuer, Mid-America Apartments, L.P., Post Properties, Inc., Post GP Holdings, Inc. and Post Apartment Homes L.P. The terms of the grant provided the Reporting Person with a choice to treat the grant as options or as stock appreciation rights ("SARs"). Each SAR represents the right, upon exercise, to receive a number of shares of Common Stock equal in value to the amount, if any, by which the fair market value of Common Stock (as determined on the date of exercise) exceeds the exercise price. The Reporting Person chose to exercise all 5,758 options as SARs on the exercise date. The 3,671 shares of Common Stock represent the difference between the number of SARs exercised (5,758) and the number of shares of Common Stock issued as a result of the exercise (2,087). ( 2 )This represents the withholding of shares of Common Stock to satisfy the tax withholding liability associated with the exercise of the SARs that is reported on this Form 4.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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