The board of Condé Nast announced a new chief executive Thursday, naming Roger J. Lynch to take charge of the century-old publisher of Vogue, Vanity Fair and The New Yorker as the company looks to stem its financial losses and transform itself into a creator for the digital age.

Mr. Lynch is an outsider who comes from the worlds of technology, television and finance. Most recently he served as the head of Pandora, the streaming music service that SiriusXM acquired last year. Mr. Lynch and several other Pandora executives stepped down at the end of January.

“Condé Nast has really culturally significant and iconic brands,” Mr. Lynch, 56, said in an interview. “That’s why I got interested. I’m really looking forward to it.”

He will replace Robert A. Sauerberg Jr., who announced in November that he would step down once his successor had been found. Mr. Sauerberg, who ran the once-plush Condé Nast for less than four years, struggled to turn around the business, which was slow to adapt to digital platforms. The company’s sales declined, like those in the rest of the magazine industry.