Guangdong Tianyu Semiconductor Co., Ltd. (TIANYU SEMI) has adopted the “Alternative Threshold” for its minimum public float requirement under Hong Kong Listing Rule 19A.28B, effective 15 September 2026, following an on-market repurchase of 56,700 H shares.

The company’s original “Initial Prescribed Threshold” required at least 15% of its issued H shares to remain in public hands, a level set at the time of listing. After the repurchase, public holdings fell marginally to 14.99% of the 393.21 million issued shares (excluding treasury stock), breaching that threshold.

Under the Alternative Threshold, a PRC issuer must maintain: 1) a market value of publicly-held H shares of at least HK$1.00 billion, and 2) a public float of no less than 10% of the relevant share class.

As of the latest practicable date (15 September 2026), TIANYU SEMI’s public float meets both criteria: • Market value: approximately HK$2.88 billion, calculated using the 125-day volume-weighted average price of HK$48.77 per H share. • Shareholding ratio: 58.93 million H shares held by the public, or 14.99% of issued shares.

Management stated that moving to the Alternative Threshold preserves flexibility for further capital-management activities while maintaining compliance with Listing Rules. The repurchased shares will be retained as treasury stock and are excluded from public float calculations.

Shareholders and potential investors are advised to exercise caution when dealing in TIANYU SEMI’s H shares.