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 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 * SHEFFIELD KATHY I   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) Sr. Vice President Admin/Treas (Last) (First) (Middle) 10402 NORTH 144 EAST AVENUE 3. Date of Earliest Transaction (Month/Day/Year) 01/02/2016 (Street) OWASSO, OK 74055 4. If Amendment, Date Original Filed(Month/Day/Year) 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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, par value $.004 01/02/2016   F   356 D $ 23.22 22,452 D   Common Stock, par value $.004 01/04/2016   A   6,190 (1) A $ 0 28,642 D

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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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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 Option (Right to Buy)

$ 22.15

01/04/2016

A

6,680 (2)

01/04/2017

01/04/2026

Common Stock

6,680

$ 0

6,680

D

Stock Option (Right to Buy)

$ 21.93

01/02/2016

01/02/2025

Common Stock

4,805

4,805

D

Stock Option (Right to Buy)

$ 8.65

05/15/2013

05/15/2022

Common Stock

22,500

22,500

D

Stock Option (Right to Buy)

$ 6.89

05/25/2011

05/25/2020

Common Stock

33,750

33,750

D

Stock Option (Right to Buy)

$ 4.54

03/09/2010

03/09/2019

Common Stock

16,875

16,875

D

Stock Option (Right to Buy)

$ 5.03

03/10/2009

03/10/2018

Common Stock

10,125

10,125

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SHEFFIELD KATHY I 10402 NORTH 144 EAST AVENUE OWASSO, OK 74055			Sr. Vice President Admin/Treas

Signatures

Kathy I. Sheffield		01/05/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Restricted Stock Grant, vesting ratably over five years
(2)	This stock option is granted under the Issuer's 2007 Long Term Incentive Plan and is exercisable ratably on each of the first five anniversaries of the date of the grant.

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