FUL ▲ +0.5% - H.B. Fuller Company $FUL - H.B. Fuller Introduces K?finity™ Portfolio Featuring Fusion Bonded Spacers, Providing Maximum Performance in Window Seal Reliability H.B. Fuller introduced its new Kfinity portfolio with fusion bonded spacers designed to improve window seal reliability, a product advancement that appears to have contributed modestly to investor confidence in the company's adhesives and sealants business. The stock rose 0.5% on the announcement. 21-SEP-2026 03:49 PM ET