Activist investor Dan Loeb, who last week demanded changes to Yahoo's (YHOO +1.7%) board and...

|By:, SA News Editor

Activist investor Dan Loeb, who last week demanded changes to Yahoo's (YHOO +1.7%) board and management, is out with another angry letter today, this time calling on co-founder Jerry Yang to get rid of Chairman Roy Bostock. Loeb also regrets being unable to finish a prior talk due to Bostock's "abrupt unilateral termination of the call."