Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N724KW - Embraer Praetor 500 - Executive AirShare N724KW - 4.7 mi away @ 40450 ft, heading NE at 615 mph. Spotted for first time! [02:09:33 PM CST] #A9B35E #N724KW #E545 #AIRSHARE #N724KW #ADSB #ADSBbot