Mandatory holding lockups covering 229.48 million shares at 38 South Korean KOSPI and KOSDAQ companies are scheduled to expire in September. The Korea Securities Depository said 119.49 million shares across five KOSPI-listed companies and 109.99 million across 33 KOSDAQ-listed firms will become eligible for trading. K bank accounts for the largest KOSPI release, with 81.78 million shares, or about 20% of shares outstanding, due on September 5. On the same day, 18.02 million SK Innovation shares, or about 11% of its outstanding stock, will also be released, putting roughly 100 million shares from the two companies into the potential market supply. Other notable releases include KR Motors, Trinity Airways and Taeyoung E&C, while Osang Healthcare, J2Kbio and Bitplanet face unlocks representing at least half of their outstanding shares. Mandatory holding registration prevents designated shareholders from selling for a specified period; its expiration does not require selling but can increase short-term supply pressure.