Sponsors We'd like to sincerely thank our sponsors. The Composite Component-Based OS development effort has been supported by grants from the National Science Foundation (NSF) under awards CNS 1137973, CNS 1149675, and CNS 1117243, by The office of Naval Research (ONR) Awards No. N00014-14-1-0386, and ONR STTR N00014-15-P-1182 and N68335-17-C-0153, by Hewlett Packard Enterprise (HPE), ARM, SRC, CRA, and Lincoln Labs. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the sponsors.