BlackBerry CEO John Chen plans to retire on November 4 after serving in the role for a decade; board member Richard Lynch will be the interim CEO (Ben Glickman/Wall Street Journal)

Ben Glickman / Wall Street Journal:

BlackBerry CEO John Chen plans to retire on November 4 after serving in the role for a decade; board member Richard Lynch will be the interim CEO  —  BlackBerry named board member Richard Lynch as interim chief executive officer after current CEO John Chen retires Nov. 4.