NATURAL GAS SERVICES GROUP INC

Our Board of Directors has adopted a Code of Business Conduct and Ethics (“Code of Ethics”), which is posted on our website at www.ngsgi.com. You may also obtain a copy of our Code of Ethics by requesting a copy in writing at 601 State Street, Suite 400, Southlake, Texas 76092 or by calling us at (432) 262-2700. Our Code of Ethics provides general statements of our expectations regarding ethical standards that we expect our Directors, officers and employees, to adhere to while acting on our behalf.

Among other things, the Code of Ethics 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;

•we maintain proper workplace practices; and

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

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