Stephen Notestine was in the commercial real estate and development business for 30 years. He is the founding partner of Quadrant Properties, a development company active in Denver and Dallas. He has been a board member on numerous not-for-profit organizations and a founding board member of the Roman Catholic Foundation. He has invested in over a dozen start-up and technology businesses in recent years. He has been a strong proponent and active fundraiser for Sequoia since its inception in 1999.