Walgreens has sold more shares of drug distributor Cencora for proceeds of about $400 million, which ... [+] will be used for “debt paydown and general corporate purposes.”In this 2013 photo, a sign marks the entrance to a Walgreens store in San Francisco's upscale Union Square shopping district. (Photo by Robert Alexander/Getty Images)Getty ImagesWalgreens Boots Alliance has sold more shares of drug distributor Cencora for proceeds of about $400 million, which will be used for “debt paydown and general cor ...