Sujal Patel has been here before. He weathered the 2009 recession as CEO of Isilon Systems, coming out the other end to sell his company the next year for $2.25 billion. He’s now CEO of Nautilus Biotechnology, and he’s not taking any big chances in the current economic downturn. “As a development stage company, we’re doing everything we can to strike the right balance between accelerating the development of our platform while seeking to extend our cash runway,” said Patel.