Vertical Performance, Inc. BUSINESS & MANAGEMENT CONSULTANTS Vertical Performance, Inc. Visit Website 15 North 1st Street Belleville, Illinois 62220 (618) 910-8923 Hours: Office hours are generally Mon - Fri from 8:00am - 5:00pm or by appointment. About About Vertical Performance provides customized business and management consulting and coaching services to a diverse clientele throughout the St. Louis region - primarily focusing on human resources.. ShareTweetShare0 Shares ShareTweetShare0 Shares