SemGroup Corporation announced that its shareholders voted to approve the previously announced merger agreement whereby SemGroup will be acquired by Energy Transfer LP (ET or Energy Transfer) in a unit and cash transaction. Effective on December 5, 2019, Kelcy L Warren and Thomas E. Long were elected to the Company's board of directors pursuant to the terms of the Merger Agreement. Also at the Effective Time, each of the Company's existing officers, including Carlin G. Conner, Robert N. Fitzgerald, Susan S. Lindberg, Timothy R. O'Sullivan, Thomas F. DeLorbe and Thomas D. Sell, were replaced with officers of Merger Sub pursuant to the terms of the Merger Agreement.

Effective on December 5, 2019, Kelcy L Warren was appointed as Chief Executive Officer of the Company and Thomas E. Long was appointed as Chief Financial Officer of the Company.