X0101 EFFECT 33 LIVE 2017-04-25 16:00:00

S-4

0001520006 Matador Resources Co 333-216549 0001699658 Longwood Midstream Holdings, LLC 333-216549-16 0001699720 MRC Permian LKE Company, LLC 333-216549-15 0001643623 Southeast Water Management Company, LLC 333-216549-14 0001643622 MRC Energy South Texas Company, LLC 333-216549-13 0001573487 MRC Rockies Co 333-216549-12 0001573492 MRC Permian Co 333-216549-11 0001643620 MRC Energy Southeast Company, LLC 333-216549-10 0001260979 MRC Energy Co 333-216549-09 0001643641 MRC Delaware Resources, LLC 333-216549-08 0001573486 Matador Production Co 333-216549-07 0001643629 Longwood Midstream Delaware, LLC 333-216549-06 0001643628 Longwood Midstream Southeast, LLC 333-216549-05 0001643614 Longwood Midstream South Texas, LLC 333-216549-04 0001573491 Longwood Gathering & Disposal Systems GP, Inc. 333-216549-03 0001643603 Delaware Water Management Company, LLC 333-216549-02 0001573488 Longwood Gathering & Disposal Systems, LP 333-216549-01