NEW YORK — It’s musical chairs at NBC News as the net moves to fill openings created by the promotions of Jeff Zucker and Andy Lack.

The Peacock net announced Thursday that “NBC Nightly News” exec producer Jonathan Wald will replace Zucker as exec producer of NBC News’ “Today” (Daily Variety, May 10). In turn, Steve Capus, exec producer of MSNBC’s “The News With Brian Williams,” will take Wald’s spot at “Nightly News.”

Although Michael Bass, who has been acting executive producer for “Today” since Zucker left the ayemcast in January, has been offered other opportunities within NBC, it’s unclear whether he’ll stick around.

NBC is expected to announce next week that NBC News senior VP David Corvo will fill Neal Shapiro’s spot as executive producer of “Dateline NBC.” Shapiro recently was named NBC News prexy when Lack was promoted to president and chief operating officer of NBC. Zucker left “Today” to serve as president of NBC Entertainment.

Wald has been with NBC News since 1983 and has worked for “Nightly” since 1993.

“Without question, filling 15 hours a week on the network schedule makes the position at ‘Today’ one of the most demanding in the news business,” Shapiro said.

“Today,” considered NBC’s most profitable program, has been a distant frontrunner in the ayem for six years.

“Nightly News,” the top-rated network evening newscast since 1997, recently ended a 53-week winning streak in total viewers, its longest since the start of People Meter use in 1987.

Capus has been exec producer of “The News With Brian Williams” since 1997. He also has exec produced a number of NBC News breaking news reports and MSNBC special broadcasts

“Brian Williams” senior producer Larry Moscow will be acting exec producer for the cable newscast.