Access Midstream Partners $0 U.S. Silica Holdings, Inc. $1,971,073 Sandridge Energy Inc $1,154,127 Marathon Petroleum Corp $3,660,480 Mplx Lp $1,686,500 Fisker Inc. $7,485 Spartan Acquisition Corp. Ii $553,500 Spartan Acquisition Corp. Iii $0 Kosmos Energy Ltd. $0 Access Midstream Partners $0 U.S. Silica Holdings, Inc. $1,971,073 Sandridge Energy Inc $1,154,127 Marathon Petroleum Corp $3,660,480 Mplx Lp $1,686,500 Fisker Inc. $7,485 Spartan Acquisition Corp. Ii $553,500 Spartan Acquisition Corp. Iii $0 Kosmos Energy Ltd. $0