Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
WAIT EARL R
   2. Issuer Name and Ticker or Trading Symbol
NATURAL GAS SERVICES GROUP INC [NGS] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP/Accounting; Treasurer
(Last)
(First)
(Middle)
5102 TEAKWOOD TRACE		 3. Date of Earliest Transaction (Month/Day/Year)
06/11/2010
(Street)

MIDLAND, TX 79707		 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 06/11/2010   S   2,500 D $ 16.28 19,237 (1) 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
Employee Stock Option (right to buy) $ 3.25             04/23/2003 04/23/2012 Common Stock 9,000   9,000 D  
Employee Stock Option (right to buy) (2) $ 14.22             11/21/2007 11/21/2016 Common Stock 5,000   5,000 D  
Employee Stock Option (right to buy) (3) $ 7.84             03/17/2010 03/16/2019 Common Stock 11,384   11,384 D  
Employee Stock Option (right to buy) (2) $ 17.74             12/09/2010 12/08/2019 Common Stock 10,000   10,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
WAIT EARL R
5102 TEAKWOOD TRACE
MIDLAND, TX 79707		       VP/Accounting; Treasurer  

Signatures

 /s/ Earl R. Wait   06/15/2010
**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) Includes 1,227 shares of common stock received pursuant to an award of restricted stock on January 4, 2010, pursuant to the Company's 2009 Restricted Stock/Unit Plan and is subject to forfeiture. The award vests one year from the grant date subject to the participant's continued employment with the Company and subject to accelerated vesting upon the death, disability or retirement of the participant, or upon a change in control of the Company.
(2) Granted pursuant to the Company's 1998 Stock Option Plan. The option vests and becomes exercisable in three equal annual installments beginning on the first anniversary of the grant date. Vesting accelerates under certain circumstances.
(3) Granted pursuant to the Company's 1998 Stock Option Plan. The option vests one year from the date of grant, although vesting accelerates if employment is terminated for any reason.

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