Access Midstream Partners $0 U.S. Silica Holdings, Inc. $1,972,348 Sandridge Energy Inc $1,202,657 Marathon Petroleum Corp $3,592,601 Mplx Lp $1,665,378 Fisker Inc. $8,325 Spartan Acquisition Corp. Ii $553,500 Spartan Acquisition Corp. Iii $0 Kosmos Energy Ltd. $0 Access Midstream Partners $0 U.S. Silica Holdings, Inc. $1,972,348 Sandridge Energy Inc $1,202,657 Marathon Petroleum Corp $3,592,601 Mplx Lp $1,665,378 Fisker Inc. $8,325 Spartan Acquisition Corp. Ii $553,500 Spartan Acquisition Corp. Iii $0 Kosmos Energy Ltd. $0