Power of Attorney for John Martin

This filing documents a Power of Attorney granted by John Martin to Martin Thornthwaite and Mark E. Jones, Jr. The attorneys-in-fact are authorized to execute and file Forms 3, 4, and 5, including any amendments, on behalf of John Martin in his capacity as Chief Financial Officer of Goosehead Insurance, Inc. This authorization is in accordance with Section 16(a) of the Securities Exchange Act of 1934. The power of attorney remains in effect until John Martin is no longer required to file these forms or until it is revoked in writing. John Martin acknowledges that the attorneys-in-fact and the Company are not assuming his compliance responsibilities under Section 16 of the Exchange Act.