SIRI SIRIUS XM HOLDINGS INC Company Mergers 8-K Filing 2023 - Merger of Equals Sirius XM Holdings Inc. has entered into definitive agreements for a split-off and merger with Liberty Sirius XM Holdings Inc., resulting in Sirius XM becoming a wholly owned subsidiary of New Sirius.Get access to all SEC 8-K filings of the SIRIUS XM HOLDINGS INC