Viacom Chief Executive Bob Bakish is planning some new senior rank appointments.

Sources tell The Post that Scott Mills is poised to get new responsibilities and may be named chief operating officer. The insiders said staffers were being informed of the new structure.

“They’re already making plans for the organization reporting to him. People are beginning to know,” said a source familiar with plans.

Mills was formerly the chief operating officer at BET and was promoted in 2012 to become Viacom’s executive VP of human resources, reporting to former COO Tom Dooley. Dooley went on to become CEO, then exited the company last year.

Bakish announced on the firm’s earnings calls last week that he was focusing investment on six key networks: BET, Comedy Central, MTV, Nickelodeon, Nick Jr. and Paramount Network.

The company declined to comment.

Viacom shares closed the session at $43.45, off 0.46 percent. For the year to date, the stock is up 24 percent.

The Post broke news last week that Viacom general counsel Michael Fricklas was departing after 24 years. The company’s chief financial officer, Wade Davis, is set to spend more time at Paramount Pictures, sources said.

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