Dec 7 (Reuters) - Kinnevik Ab KINVb.ST :
* Says CEO Lorenzo Grabau to leave Kinnevik with immediate effect
* Says Joakim Andersson has been appointed acting CEO
* Says Lorenzo will remain in his positions in boards of directors of Millicom, Qliro group, Tele2 and Zalando
* Says a search process for Lorenzo's successor now will be undertaken by the Board Source text for Eikon: ID:nGNEbMhMBw Further company coverage: KINVb.ST