Adam Jentleson, the deputy communications director for Senate Majority Leader Harry Reid and Senate Democrats’ messaging operation, is slated to become the Nevada Democrat’s new communications director.

Jentleson will succeed outgoing Reid communications director Jon Summers, who is leaving Reid’s office after five years to take up a new job as senior vice president at GMMB, a leading political consulting shop that has done work for Reid’s previous campaigns.

News of Summers’s departure was first reported by Roll Call Thursday night.

“Jon will be missed but I am honored to have this opportunity to serve Senator Reid and the caucus,” said Jentleson, who turns 30 next week.

The move follows several other reshuffles in Reid’s office following Senate Democrats’ merging earlier this year of two separate offices -- the Democratic Policy Committee and the Senate Democratic Communications Center – into the Democratic Policy and Communications Center, which is headed by Sen. Charles Schumer (D-N.Y.).

Reid’s longtime spokesman Jim Manley departed earlier this year after working in the Senate for more than two decades, and Rodell Mollineau, who served as staff director for the Senate Democratic Communications Center and worked previously as Reid’s communications director, left in January and now heads the American Bridge 21st Century super PAC.

In a message to staff Thursday night, Summers, who had been asked to help oversee the reorganization of the Senate Democratic messaging operation after playing a key role in Reid’s 2010 re-election bid, said that he was “proud of the communications team we have and the accomplishments we’ve made.”

“Now, with things up and running, I’m ready to take my next personal step,” Summers wrote. “I have the deepest admiration and respect for Sen. Reid and feel very fortunate to have been able to work with such a talented and dedicated staff.”

Summers’s departure is effective at the end of the Senate’s current work period on July 1.