Exhibit 99.2
Plains All American Pipeline, L.P.
333 Clay Street, Suite 1600
Houston, TX 77002
April 17, 2012
Mr. Norman J. Szydlowski | Mr. John F. Chlebowski | |
President & Chief Executive Officer | Chairman of the Board | |
SemGroup Corporation | SemGroup Corporation | |
Two Warren Place | Two Warren Place | |
6120 S. Yale Avenue, Suite 700 | 6120 S. Yale Avenue, Suite 700 | |
Tulsa, OK 74136-4216 | Tulsa, OK 74136-4216 |
Dear Gentlemen:
Please accept this letter as notification that we are withdrawing our October 2011 proposal to acquire 100% of the issued and outstanding shares of Class A and Class B common stock of SemGroup Corporation for $24.00 per share in cash.
Very truly yours, |
/s/ Greg L. Armstrong |
Greg L. Armstrong |
Chairman and Chief Executive Officer |