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 OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      
1. Name and Address of Reporting Person * Warren David R 2. Issuer Name and Ticker or Trading Symbol SMITH A O CORP [ AOS ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
Senior VP & President and GM
(Last)         (First)         (Middle)
A. O. SMITH CORPORATION, 500 TENNESSEE WALTZ PARKWAY
3. Date of Earliest Transaction (MM/DD/YYYY)
2/13/2020
(Street)
ASHLAND CITY, TN 37015
(City)       (State)       (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)
 
6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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  2/13/2020    A    975 (1) A $43.96  5311  D   
Common Stock  2/13/2020    F    384  D $43.96  4927  D   

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
Restricted Stock Units  $43.96  2/13/2020    M        975    (1)  (1) Common Stock  975  $0  10335  D   

Explanation of Responses:
(1)  975 Restricted Stock Units were granted on 02/13/2017, under the A. O. Smith Combined Incentive Compensation Plan, a transaction exempt under Rule 16b-3. 975 Restrited Stock Units vested on 02/13/2020. As a result of vesting, the Company is obligated to deliver 975 shares of Common Stock to the reporting person.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Warren David R
A. O. SMITH CORPORATION
500 TENNESSEE WALTZ PARKWAY
ASHLAND CITY, TN 37015


Senior VP & President and GM

Signatures
James F. Stern, Attorney-in-Fact for David R. Warren 2/18/2020
**Signature of Reporting Person Date
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