GCT Semiconductor Holding, Inc. (Nasdaq: GCTS) is a fabless semiconductor company focused on 4G LTE and 5G chipset solutions for IoT and broadband applications, operating in the wireless communications semiconductor sector. The company became publicly traded through its SPAC merger with Concord III Acquisition Corp., a blank-check vehicle sponsored by Concord Sponsor Group LLC that completed its IPO in 2021. As of August 2026, GCTS remains a listed public company and filed a definitive proxy statement (DEF 14A, accession 0001193125-26-330575) with the SEC on August 3, 2026, in connection with an upcoming shareholder meeting. For full filing history, merger documentation, and real-time SPAC analytics on GCTS, sign up for complete data access at SpacDesk.