EQS-News: Semperit AG Holding / Announcement of the Convening of the General Meeting Semperit AG Holding: Invitation to 133rd Annual General Meeting of Semperit Aktiengesellschaft Holding for Wednesday, 27 April 2022, at 10:00 a.m., CEST 25.03.2022 / 18:36 Announcement of the Convening of the General Meeting, transmitted by EQS - a.