Say it isn't so! Executive producer Jeff Pinkner is leaving Fringe.

TV Guide reports that Pinker is leaving "in order to pursue other projects and that it was an amicable split." Co-showrunner J.H. Wyman will remain to run the show solo.

TV Guide also has a statement from series co-creator/exec producer J.J. Abrams:

"We're so excited to begin work on a fifth season of Fringe and to be able to deliver the 13 final episodes to our passionate and devoted fans. For four years, J.H. Wyman and Jeff Pinkner have worked tirelessly as a team to keep all the worlds in order on Fringe. We're thankful for the invaluable contributions Jeff has made to the show and of course wish him well and look forward to working together in the future. J.H. Wyman's importance to Fringe cannot be overstated, however, and I'm thrilled that he will continue as showrunner for the concluding chapters of our story. We can't wait for our fans to see what we have in store for them in the wild conclusion of Fringe."

Fringe returns to FOX for its fifthe and final season on Friday, Sept. 28 at 9/8c.