EXCLUSIVE: Neal Tiles is departing G4, where he has served as president since September 2005. The cable network, previously owned by Comcast, is now under the purview of Bonnie Hammer following last year’s Comcast-NBCUniversal merger. Here is Tiles’ internal email to the staff:

After much deliberation, I’ve decided it’s time for me to step down as President of G4. To say that it’s been a rewarding 6 1/2 years would be an understatement.  Simply it’s been the greatest challenge of my career. However, I feel the need to move on to my next challenge.  Together, we’ve accomplished so much…it has been nothing but an honor to work with so many passionate individuals here.

I know Bonnie remains committed to the network and you’ll be hearing from her shortly. I have started the transition with Bonnie and I am sure you will be in great hands moving forward.

Until then, I wish you all continued success.

All the best,

Neal