IR Japan Holdings, Ltd. provides investor and shareholder relation consulting services to publicly traded companies, investors, and market participants in Japan. It offers equity consulting services, including shareholder identification survey, voting simulation, activist and hostile takeover risk analysis, corporate value enhancement advisory, strategic review, balance sheet simulation, corporate governance consulting, ESG consulting, and stock transfer agency. The company also provides merger and acquisition (M&A) services, such as financial advisory for M&A execution, corporate acquisition, corporate merger, and corporate sale, as well as management buyout advisory/leveraged buyout advisory. In addition, it offers investment banking services comprising financial advisory/proxy advisory for contest for corporate control and takeover bid, and activist defense, as well as proxy contest and takeover bid; and global and AI research framework services. The company was founded in 1984 and is headquartered in Tokyo, Japan.