The conclusions of EFSA following the peer review of the initial risk assessments carried out by the competent authorities of the rapporteur Member State Sweden and co‐rapporteur Member State the Netherlands for the pesticide active substance Verticillium albo‐atrum strain WCS850 are reported. The context of the peer review was that required by Commission Implementing Regulation (EU) No 844/2012. The conclusions were reached on the basis of the evaluation of the representative use of Verticillium albo‐atrumstrain WCS850 as a fungicide on elm trees. The reliable end points, appropriate for use in regulatory risk assessment, are presented. Missing information identified as being required by the regulatory framework is listed.