BASiC Semiconductor Co., Ltd. (深圳基本半導體股份有限公司) has released the formal details of its planned Hong Kong initial public offering, outlining a fully electronic subscription process and a timetable that targets first trading on 8 July 2026.

Offer Size and Structure • Total shares: 27.39 million H-shares to be issued under the Global Offering, with an additional over-allotment option of up to 4.11 million shares (15%), potentially lifting the deal size to 31.49 million shares. • Tranche split: 1.37 million shares (5%) earmarked for the Hong Kong Public Offering and 26.02 million shares (95%) for the International Offering, both subject to reallocation. Should demand warrant, the public tranche may increase to 2.74 million shares (10% of the base deal). • Nominal value: RMB0.20 per H-share.

Pricing Parameters • Indicative price range: HK$27.49–31.62 per H-share. • Investors applying via the Hong Kong Public Offering must pay up to HK$31.62 per share on application, plus standard levies and brokerage.

Key Dates • Offer period: 29 June (09:00) – 3 July 2026 (12:00). • Price determination: on or before 6 July 2026. • Allocation results publication: no later than 7 July 2026 (23:00). • Expected listing and first day of trading: 8 July 2026 at 09:00. • Board lot size: 200 H-shares; clearing and settlement through CCASS from the listing date.

Subscription Method The Hong Kong Public Offering adopts an entirely electronic application model: 1. White Form eIPO via www.eipo.com.hk (physical share certificates). 2. HKSCC EIPO channel via brokers/custodians for CCASS deposits (electronic form). No physical application forms or prospectuses will be distributed.

Underwriting and Stabilisation The company has appointed Sinolink Securities (Hong Kong) Company Limited as Stabilizing Manager. Stabilisation activities, if undertaken, may occur from the listing date until 30 days after the close of the public offer. The Hong Kong Underwriters may terminate obligations under specified conditions up to 08:00 on the listing day.

Regulatory Clearance Listing approval from the Stock Exchange of Hong Kong is pending. Upon admission, the H-shares will trade under the stock code 09971.

Governance The board is led by Chairman Dr. Wang Zhihan, accompanied by three additional executive directors and three independent non-executive directors.