 VIENNA, Va. RESTON, Va.--BUSINESS WIRE--NavSight Holdings, Inc. NYSE: NSH, NavSight, a publicly-traded special purpose acquisition company, and Spire Global, Inc. Spire, a leading provider of space-based data, analytics and space services, today announced that NavSights registration statement on Form S-4 File No. 333-256112, relating to the previously announced merger of NavSight and Spire the Business Combination has been declared effective by the U.S. Securities and Exchang 