Revolutionizing the Real Estate Industry with Sean Black Dare to Disrupt Revolutionizing the Real Estate Industry with Sean Black Play Episode Pause Episode Mute/Unmute Episode Rewind 10 Seconds 1x Fast Forward 30 seconds 00:00 / 00:49:40 Subscribe Share Apple Podcasts Google Podcasts Spotify RSS Feed Share Link Embed Sean Black is the Co-founder & CEO of Knock.com, and he was part of the founding team for the online real estate marketplace site Trulia. He graduated from Penn State in 1996 with a degree in international business management.