OMC OMNICOM GROUP INC Company Mergers 8-K Filing 2025 - Merger Approval Omnicom Group Inc. held a special meeting on March 18, 2025, where stockholders approved the issuance of shares for a merger with The Interpublic Group of Companies, with 155,510,386 votes in favor and 10,776,253 against. The merger is expected to be completed in the second half of 2025.Get access to all SEC 8-K filings of the OMNICOM GROUP INC