Maybe it’s all that time at Levi’s Stadium, which hosted the Super Bowl this year, but Michelle Gass is starting to sound just a little bit like a coach keeping her team pumped up at Levi Strauss & Co. “We’ve put a lot of proof points on the board over the last year and a half,” said Gass, chief executive officer, in an interview with WWD. More from WWD Most recently, it was the first quarter, which came in stronger than expected on Tuesday with organic sales up 9 percent, while earnings per share toppe ...