Nevins in, Greenblatt out at Showtime

Entertainment president stepping down after seven years

Showtime's longtime entertainment president Robert Greenblatt is stepping down from his post after seven years.

David Nevins, who announced his departure as president of Imagine TV on Thursday, will take over Greenblatt's post.

Greenblatt has had a hugely successful run at Showtime. In 2003, Showtime had 12.4 million subscribers. As of March, the network has 18.1 million -- a climb driven by original series such as "Dexter," "Weeds," "Californication" and "The Tudors." Under Greenblatt's leadership, Showtime narrowed the gap with HBO from 15 million subscribers to 10.6 million.

Though the executive shuffle came down just this week, sources portrayed Greenblatt's decision as a long time in the making. It's unclear if the network's corporate communications chief, Richard Licata, who's worked with Greenblatt for 16 years, will opt to continue at the network in the wake of the entertainment president's departure.

Showtime had no comment.