Robert Herjavec is one of the most successful businessmen on television, but he admitted that jealousy of Shark Tank costar Mark Cuban nearly got the best of him. “So, a number of years ago, we ...

Robert Herjavec, who has been a "Shark" on the popular reality TV series Shark Tank since it started in 2009, might be well-known for his skills in business dealings, but recently, he showed off ...

Robert Herjavec, entrepreneur and an investor on ‘Shark Tank,’ was named executive director of global strategy at data management company Zetaris. Photo: Heidi Gutman/ABC/Getty Images ...

Robert Herjavec has advised hundreds of entrepreneurs on ABC’s Shark Tank about how to run their businesses, but he’s also picked up some valuable advice while serving as an investor on the show.