NATURAL GAS SERVICES GROUP INC

Our Board of Directors has adopted a Code of Business Conduct and Ethics (“Code”), which is posted on our website atwww.ngsgi.com. You may also obtain a copy of our Code by requesting a copy in writing at 404 Veterans Airpark Lane, Suite 300, Midland, Texas 79705 or by calling us at (432) 262-2700.

Our Code provides general statements of our expectations regarding ethical standards that we expect our Directors, officers and employees, including our Chief Executive Officer and Chief Financial Officer, to adhere to while acting on our behalf. Among other things, the Code provides that:

•we will comply with all laws, rules and regulations;

•our Directors, officers and employees are to avoid conflicts of interest and are prohibited from competing with us or personally exploiting our corporate opportunities;

•our Directors, officers and employees are to protect our assets and maintain our confidentiality;

•we are committed to promoting values of integrity and fair dealing; and

•we are committed to accurately maintaining our accounting records under generally accepted accounting principles and the timely filing our periodic reports.

Our Code also contains procedures for our employees to report, anonymously or otherwise, violations of the Code.