The European Food Safety Authority (EFSA) Panel on Genetically Modified Organisms (GMO Panel) has published their assessment on the safety of five-event stack genetically modified (GM) herbicide tolerant and insect resistant maize MON 89034 × 1507 × MIR162 × NK603 × DAS-40278-9. The Scientific Opinion is published based on the application EFSA-GMO-NL-2018-151 under Regulation (EC) No. 1829/2003 received from Dow AgroSciences LLC.