The relevant supervisory authorities shall work in full consultation with each other when carrying out the assessment if the proposed acquirer is one of the following : ( a ) a credit institution , insurance or reinsurance undertaking , investment firm or management company within the meaning of point 2 of Article 1a of Directive 85/611 / EEC ( the UCITS management company ) authorised in another Member State or in a sector other than that in which the acquisition is proposed