Governance Documents

SemGroup is committed to the highest standards of corporate governance. Our governance principles are built on the values of integrity, respect, and transparency. These values are incorporated into our Code of Conduct, Corporate Governance Guidelines and Committee Charters, all of which provide a framework for our daily operations.

Accounting concerns may be submitted, as follows:

Telephone – U.S. and Canada Only – toll-free 1-866-490-3238 – a third party, independent experienced interviewer is available to take calls twenty-four hours a day, seven days a week. Each call is completely anonymous and cannot be traced.
Internet – A report can be submitted anonymously online through the third party, independent provider’s web service at https://www.integrity-helpline.com/semgroupcorp.jsp.

Mail – Chair of the Audit Committee, c/o SemGroup Corporation, Two Warren Place, 6120 S. Yale Ave., Suite 1500, Tulsa, Oklahoma 74136-4231