 MINNEAPOLIS--BUSINESS WIRE--Sleep Number Corporation Nasdaq: SNBR today reported results for the quarter ended April 3, 2021. Guided by our purpose to improve the health and wellbeing of society through higher quality sleep, Sleep Number is broadening our brand relevance and driving significant performance acceleration, said Shelly Ibach, President and CEO. Our first-quarter demand growth of greater than 30 demonstrates consumers enthusiastic response to our sleep science-based innovat 