Sono International submitted a preliminary IPO review application to the Korea Exchange on 26 June 2026, targeting a KOSPI listing with a valuation of approximately 3 trillion won ($1.9 billion). The move resumes the parent company’s IPO push after Trinity Airways (formerly t’way Air) resolved capital impairment issues, lowering its equity drag via SOTP valuation. The offering includes 19.7 million shares, or 30% of total listed shares, with Mirae Asset Securities and Daishin Securities as lead underwriters. The listing would establish a three-tiered structure (Sono → T’way Holdings → Trinity Airways), prompting minority shareholders of T’way Holdings to petition regulators for governance safeguards amid concerns over long-term share value erosion.