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 *

Thompson Rebecca
2. Issuer Name and Ticker or Trading Symbol

AAON, INC. [ AAON ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
Chief Accounting Officer
(Last)          (First)          (Middle)

2425 S YUKON AVE
3. Date of Earliest Transaction (MM/DD/YYYY)

3/3/2020
(Street)

TULSA, OK 74107
(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, par value $.004 3/3/2020  M  1350 A$22.15 11596 D  
Common Stock, par value $.004 3/3/2020  S  1350 D$57.75 (1)10246 D  
Common Stock, par value $.004 3/4/2020  M  3500 A$34.10 13746 D  
Common Stock, par value $.004 3/4/2020  S  3500 D$58.76 (2)10246 D  
Common Stock, par value $.004         304 I 401(k) Plan 

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 Security3. Trans. Date3A. Deemed Execution Date, if any4. 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 Date7. 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy) $21.93           1/2/2016 1/2/2025 Common Stock 660.0  660 D  
Stock Option (Right to Buy) $22.15 3/3/2020  M     1350  1/4/2017 1/4/2026 Common Stock 1350.0 $57.75 (1)900 D  
Stock Option (Right to Buy) $34.1 3/4/2020  M     3500  1/4/2018 1/4/2027 Common Stock 3500.0 $58.76 (2)19500 D  
Stock Option (Right to Buy) $36.95           1/2/2019 1/2/2028 Common Stock 28800.0  28800 D  
Stock Option (Right to Buy) $41.37           3/11/2020 3/11/2029 Common Stock 61000.0  61000 D  

Explanation of Responses:
(1) This transaction was executed in multiple trades at prices ranging from $57.71 to $57.78. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
(2) This transaction was executed in multiple trades at prices ranging from $58.62 to $58.91. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Thompson Rebecca
2425 S YUKON AVE
TULSA, OK 74107


Chief Accounting Officer

Signatures
Rebecca Thompson3/4/2020
**Signature of Reporting PersonDate

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