Thomson Reuters
Theranos just made some major changes to its company.
On Wednesday, the blood-testing startup said that Sunny Balwani, the company's president and chief operating officer is stepping down and retiring.
Balwani, who joined Theranos in 2009 also served on the company's board of directors.
Theranos will also be bringing in three new members to its board, including biotech veteran Fabrizio Bonanni. The other two — William Foege and Richard Kovacevich — will move over from Theranos' board of counselors.