The longtime executive is leaving the music business to study religion and theology.
Also this week: Hipgnosis hires a new creative chief, Downtown promotes a marketing and communications exec and Merlin welcomes back a former colleague.
"All good things come to an end and I’ve decided it’s the right moment for me to move on."
The newly combined label will be led by co-presidents Margi Cheske and Mark Williams.
Also this week: All My Friends finds a head of creative content, Downtown is down with David Driessen and Sony Music Publishing Scandinavia promotes a pair.
"I’m honored to welcome him to the Republic Records family,” said Republic president and chief operating officer Jim Roppo.
Dr. Kitatani will work WMJ chief Kaz Kobayashi on the label's "continuing evolution."
Joshua most recently led Universal Music's foray into Web3.
The executive will replace Patrick Mushatsi-Kareba, who is exiting the company at the end of August.
Also this week: Kate London moves to Audio Chateau, Nashville Yards staffs up as it nears compleation and Cumulus' podcasting network has a new senior vp.