POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that the undersigned hereby constitutes and appoints Joseph L. McCormick and Brian K. Shore, the undersigned's true and lawful attorneys-in-fact to: (1) Execute for and on behalf of the undersigned, in the undersigned's capacity as an officer and/or director of ONE Gas, Inc. (the Corporation), Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder; (2) Do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Forms 3, 4, or 5 and timely file such form with the United States Securities and Exchange Commission and any stock exchange or similar authority; (3) Take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorneys-in-fact, may be of benefit to, in the best interest of, or legally required by the undersigned, it being understood that the documents executed by such attorneys-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain the terms and conditions as such attorneys-in-fact may approve in such attorneys-in-fact's discretion. The undersigned hereby grants to each such attorneys-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of revocation, hereby ratifying and confirming all that each such attorneys-in-fact shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that neither the Corporation nor the above-named individuals, in serving in such capacity at the request of the undersigned, are assuming any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934. The Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4, and 5 with respect to the undersigned's holdings of and transactions in securities issued by the Corporation, unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact. This Power of Attorney revokes all such special powers of attorney granted to individuals in the past to act on behalf of the undersigned for the purposes stated above. IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed as of this 16th day of March 2015. /s/ ROBERT S. MCANNALLY ---------------------------------------- ROBERT S. MCANNALLY CONFIRMING STATEMENT This Statement confirms that the undersigned has authorized and designated Joseph L. McCormick and Brian K. Shore, to execute and file on the undersigned's behalf all Forms 3, 4, and 5 (including any amendments thereto) that the undersigned may be required to file with the United States Securities and Exchange Commission as a result of the undersigned's ownership of or transactions in securities of ONE Gas, Inc. The authority of the above-named individuals under this Statement shall continue until the undersigned is no longer required to file Forms 3, 4, or 5 with regard to the undersigned's ownership of or transactions in securities of ONE Gas, Inc. unless earlier revoked in writing. This Statement revokes all such special powers of attorney granted to individuals in the past to act on behalf of the undersigned for the purposes stated above. The undersigned acknowledges that neither ONE Gas, Inc. nor the above-named individuals are assuming any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934. /s/ ROBERT S. MCANNALLY ---------------------------------------- ROBERT S. MCANNALLY Dated: March 16, 2015 March 16, 2015 Securities and Exchange Commission Filer Support of the Office of Filings and Information Services I hereby confirm the authenticity of the information that appears on the attached Power of Attorney. State of Oklahoma ) ) ss County of Tulsa ) The foregoing instrument was acknowledged before me this 16th day of March 2015, by Robert S. McAnnally. /s/ Stephanie McClanahan ---------------------------------------- Stephanie McClanahan, Notary Public My commission expires: 10/13/2016 Commission No. 00015049
ONE Gas (OGS) Form 3ONE Gas / Robert S. McAnnally ownership change
Filed: 18 Mar 15, 12:00am