Knight-Swift Transportation Holdings Inc. Announces Timing of Second Quarter 2021 Earnings Release PHOENIX--(BUSINESS WIRE)--Knight-Swift Transportation Holdings Inc. (NYSE: KNX) expects to release its 2021 second quarter earnings on Wednesday, July 21, 2021 prior to the market open by filing a Form 8-K with the SEC. The earnings release will be available on the Companys website investor.knight-swift.com|events-and-presentations and the Form 8-K will be available on the SEC website http:||www.sec.gov. The Company assumes no responsibility to update any information posted on its website. The