X0101 EFFECT 33 LIVE 2014-04-25 11:00:00

S-4

0001176334 MARTIN MIDSTREAM PARTNERS LP 333-195227 0001501249 Martin Midstream Finance Corp. 333-195227-05 0001501250 Martin Operating GP LLC 333-195227-04 0001294564 Martin Operating Partnership L.P. 333-195227-03 0001573996 Redbird Gas Storage LLC 333-195227-02 0001573997 MOP Midstream Holdings LLC 333-195227-01