The primary catalyst driving the sharp decline in Zscaler shares is investor unease surrounding executive leadership turnover within its go-to-market and revenue organization. The company announced that Chief Revenue Officer Mike Rich will step down from his post for personal reasons, with internal sales executive Ross Tackett stepping into the Chief Revenue Officer role. While internal promotions often signal stability, top-level sales transitions frequently trigger short-term caution among institutional investors. Because sales force execution and go-to-market alignment are critical for closing complex enterprise deals, leadership turnover introduces concern over potential friction in sales pipeline execution and deal closing…