Abstract The three‐event stack cotton GHB614 × LLCotton25 × MON 15985 was produced by conventional crossing to combine three single cotton events, GHB614, LLCotton25 and MON 15985. The EFSA GMO Panel previously assessed the three single events and did not identify safety concerns. No new data on the single events that could lead to modification of the original conclusions on their safety were identified. Based on the molecular, agronomic, phenotypic and compositional characteristics, the combination of the single events and of the newly expressed proteins in the three‐event stack cotton did not give rise to food and feed safety or nutritional issues. Food and feed derived from cotton GHB614 × LLCotton25 × MON 15985 are expected to have the same nutritional impact as those derived from the non‐GM comparator. In the case of accidental release of viable GHB614 × LLCotton25 × MON 15985 cottonseeds into the environment, this three‐event stack cotton would not raise environmental safety concerns. The post‐market environmental monitoring plan and reporting intervals are in line with the intended uses of cotton GHB614 × LLCotton25 × MON 15985. In conclusion, the GMO Panel considers that cotton GHB614 × LLCotton25 × MON 15985, as described in this application, is as safe as the non‐GM comparator with respect to potential effects on human and animal health and the environment.