MOVING ON: Dennis Yang, who has served as CEO of online learning marketplace Udemy since 2012, is leaving the post. “When I started here, our office of 15 people was on the fourth floor of a bare-bones building,” he reflected in a LinkedIn post announcing his departure. The company had raised $169 million in venture capital under his watch, with a marketplace that boasts more than 45,000 courses and 20,000 instructors. Taking his spot will be Kevin Johnson, former CEO of EBates, a marketplace for coupons and shopping discount deals.