Lynsi Snyder, the president of In-N-Out Burger, turned 35 years of age on Friday Snyder inherited company founded by her late grandparents, Harry and Esther As part of a complex trust structure, she was given a 97 percent stake in the firm Over the past 10 years, she has gradually assumed a larger ownership stake The 97-percent stake is thought to be worth $1.3billion For most people, turning 35 years old means going out to a nice dinner with loved ones and perhaps getting a gift certificate.