TYK MEDICINES-B (Stock Code: 02410) disclosed that as of 28 February 2026, the company had approximately 375.46 million H shares. On 4 March 2026, 4.61 million unlisted shares were converted into H shares, representing about 1.23% of the existing H shares before the conversion. Following this change, the total issued H shares reached approximately 380.07 million, and the unlisted shares balance was reduced to zero.