Targa Resources Partners Lp $0 Targa Resources Corp. $541,730 Laredo Petroleum Inc $14,960 Antero Resources Corp $13,249,051 Antero Midstream GP LP $728,427 Targa Resources Partners Lp $0 Targa Resources Corp. $541,730 Laredo Petroleum Inc $14,960 Antero Resources Corp $13,249,051 Antero Midstream GP LP $728,427