uSonar Co., Ltd. (Ticker: 431A JP) is a Japan-based software company specializing in database and marketing support services, including customer data integration solutions. uSonar plans to list on the Tokyo Stock Exchange Growth Market on October 17, 2025, planning to offer 2.32 million shares in an expected price range of JPY 1,910–2,000, raising JPY 4.63 billion (USD 31.48 million). The deal is predominantly secondary (2.265 million secondary; 50,000 primary), with a 15% greenshoe (347,200 shares). Nomura Securities Co., Ltd. is the lead manager. The expected market capitalization at offer is USD 115.41 million. Notes indicate a selling private investor, Nanami Fukutomi, is offering 1.1 million shares, and the company holds 0.05 million treasury shares.