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 * Taylor Stephen Charles   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) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 508 WEST WALL STREET, SUITE 550 3. Date of Earliest Transaction (Month/Day/Year) 09/10/2008 (Street) MIDLAND, TX 79701 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               1,000 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

Nonstatutory Stock Option (right to buy) (1)

$ 9.22

01/13/2006

08/24/2015

Common Stock

45,000

45,000

D

Nonstatutory Stock Option (right to buy) (2)

$ 14.22

11/21/2007

11/21/2016

Common Stock

15,000

15,000

D

Employee Stock Option (right to buy) (3)

$ 20.06

01/15/2009

01/15/2018

Common Stock

40,000

40,000

D

Employee Stock Option (right to buy) (4)

$ 17.51

09/10/2008

A

25,000

09/10/2009

09/10/2018

Common Stock

25,000

$ 0

25,000

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Taylor Stephen Charles 508 WEST WALL STREET, SUITE 550 MIDLAND, TX 79701	X		President and CEO

Signatures

/s/ Stephen C. Taylor		09/11/2008
**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)	Such option vests and is exercisable in three equal annual installments beginning January 13, 2006.
(2)	Granted pursuant to the Company's 1998 Stock Option Plan. The option is exercisable in two equal annual installments beginning November 21, 2007.
(3)	Granted pursuant to the Company's 1998 Stock Option Plan. The option is exercisable in three equal annual installments beginning January 15, 2009
(4)	Granted pursuant to the Company's 1998 Stock Option Plan. The option is exercisable in three equal annual installments beginning September 10, 2009

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