Biography: Matthew Jacob Hong (born September 4, 1991) is an American rock climber, filmmaker and photographer. In 2018, he became the fourth American to climb a route graded at 5.15b (9b). As a filmmaker, he directed the 2017 film Break on Through, which documented Margo Hayes completing the first-ever female ascent of a 9a+ (5.15a) graded sport climbing route, and is featured on the Reel Rock Film Tour.