Complex sentence: Icos Corporation, trademarked as ICOS, was a biotechnology company based in Bothell, Washington that began operations in 1990 after being co-founded by George B. Rathmann, previously Chief Executive Officer (CEO) and co-founder of Amgen and a pioneer in the biotechnology industry.
Split into simpler sentences: Icos Corporation, trademarked as ICOS, was a biotechnology company based in Bothell, Washington. It began operations in 1990 after being co-founded by George B. Rathmann, previously Chief Executive Officer (CEO) and co-founder of Amgen and a pioneer in the biotechnology industry.