I've been participating in a local Reign of Winter adventure with three other players, complimenting the designated number of four PCs for the Adventure Path. We've also gained the cooperation of a NPC companion who is an active encounter participant, both combat and skill-based encounters. All XP earned has been divided between the five characters. Is this the proper procedure? Otherwise, what is the correct procedure of awarding XP to a four-PC group plus one NPC in this Adventure Path? Thank you.