Jake Kassan started his first business in high school: a T-shirt company he grew through YouTube and social media channels. It went…a little too well. “I was generating $10,000-plus a week,” he says, “and I needed help.” He was just 16, after all, and he was falling behind on shipping, accounting—the whole operations side. Luckily, he found the perfect person. She lacked business experience, but she was a quick study, a hard worker, and unusually loyal. Plus, she worked for free.
She was his mother, Marla.
His mom helped out on his second startup, too, which sold apparel and “rave lights,” geared toward music festivals. While those companies eventually folded, Kassan’s third effort did not. In 2013 he and a cofounder launched MVMT, an L.A.–based startup that sells stylish, affordable,…
