The New York Times continued to shake up its newsroom leadership on Tuesday by naming Ellen Pollock, formerly the editor in chief of Bloomberg Businessweek, the next top editor of its business section. The move comes just weeks after the company announced that Dean Murphy, who had led the section, known as Business Day, for the last four years, was being promoted to associate editor.

In announcing the appointment, Dean Baquet, the executive editor of The Times, called Ms. Pollock “an accomplished editor with the experience and talent needed to broaden our already ambitious business coverage.”

Businessweek won a National Magazine Award for general excellence in 2012 and was a finalist in three categories this year. Ms. Pollock, 62, left the magazine in November.

The announcement is the latest move in a reshaping of The Times’s newsroom. Rebecca Blumenstein, deputy editor in chief of The Wall Street Journal, was recently named a deputy managing editor, and a number of other editors have been elevated to the top leadership ranks.

Ms. Pollock — whose husband, Barry Meier, was a member of the reporting team from The Times that won the Pulitzer Prize for international reporting last week — worked for 18 years at The Wall Street Journal as a reporter and editor before joining Businessweek in 2007 as executive editor. Articles she worked on as an editor at The Journal won Pulitzer Prizes in 2003 and 2005.