How many movies have Philippa Boyens and R. Christopher White collaborated on?

They have worked on 4 movies together! Their first movie together was District 9 (2009) while their highest rated movie together was The Hobbit: The Desolation of Smaug (2013). They have not worked together since The Hobbit: The Battle of the Five Armies (2014). They are most known for their adventure films together.