anne espirituAnne Espiritu, VP of global PR and communications for Yahoo! Inc., is slated to exit on the web portal's acquisition by Verizon.

She will join healthcare start-up Oscar Insurance Corp. as VP of communications and corporate responsibility.

"The last four years have undoubtedly been the most challenging, all-consuming yet most rewarding experience of my life," Espiritu wrote in a blog post announcing her exit.

Espiritu spent the past four years at Yahoo!, all under CEO Marissa Mayer. She previously worked with Mayer at Google in various consumer and product PR posts.

Sheila Tran, head of communications for Polyvore, is returning to Yahoo to take the reins as head of global PR. She was previously head of international comms. and director of global product and tech comms.