Board Thread:Questions and Answers/@comment-8190522-20130414133138/@comment-6011882-20130415165118

The answer is no. If you qualify for individual rewards, of course you will get them. But you forfeit any and all guild rewards the moment you leave. And this includes the preiod after the event has completed and before the rewards have been distributed. If you're out of the guild at the time rwards are given, you will not get them.