By Bill Rigby SEATTLE (Reuters) – An online stock trader who profited from inside information passed to him by a former Microsoft Corp finance employee was sentenced to 1-1/2 years in prison in Seattle on Friday. Sean Stokke had pleaded guilty to charges of insider trading, which federal prosecutors said netted more than $400,000 in illicit profits over an 18-month period for him and his Microsoft accomplice, Brian Jorgenson. Prosecutors had asked for a 1-1/2 year sentence for Stokke, 29, far short of the maximum prison sentence of 20 years for the charges of criminal insider trading, given his cooperation with investigators.