TechAs rumored earlier, Yahoo (YHOO) Chairman Roy Bostock and 3 other directors will step down....Feb. 07, 2012 4:13 PM ETAltaba, Inc. (AABA)AABABy: Stephen Alpher, SA News Editor As rumored earlier, Yahoo (YHOO) Chairman Roy Bostock and 3 other directors will step down. Named to the board are Fred Amoroso and Maynard Webb. (PR) Recommended For YouMore Trending NewsSee More »Related StocksSymbolLast Price% ChgAABA--Altaba, Inc.Trending AnalysisTrending News