CHYY Development Group Limited released a supplemental announcement detailing its securities holdings as at 31 December 2025. The portfolio, funded entirely by idle internal cash and free of leverage or pledges, stood at HK$54.76 million, equivalent to 6.72 % of the Group’s total assets.

The core position is the China Asset Management – Ever Source Overseas Oriented Asset Management Plan, carrying a fair value of RMB49.17 million (HK$54.44 million) and accounting for 6.68 % of total assets. Subscribed in 2014 with RMB50.00 million, the Plan invests mainly in 13-year structured notes issued by a BVI SPV that holds a 1.95 % equity stake in Sinopec Sales Co., Ltd. During 2025, the Plan distributed RMB1.31 million in dividends to the Group, bringing cumulative receipts since inception to roughly RMB15.37 million—an annualised yield of about 2 %-3 %. Management intends to retain the position as a non-trading, long-term holding.

Minor positions include: • Beijing Hisign Technology Co., Ltd.—carrying amount HK$0.28 million, or 0.03 % of assets—originally acquired in 2015 as a strategic technology stake (0.245 % shareholding). • Trading investments—10,000 shares of China Railway Group Limited valued at HK$38,300 (0.005 % of assets) at year-end and fully liquidated after the reporting period. Aggregate trading gains for 2025 totalled HK$1.80 million.

Investment policy emphasises prudence, diversification and liquidity. Single-product exposure is capped at 10 % of total assets, while cumulative equity exposure cannot exceed 35 % of invested assets. Long-term holdings are overseen by PRC subsidiary HYY Investment Management Co., Ltd.; short-term trading is executed through a Hong Kong platform under stop-loss rules of 15 %-20 %.

The Board confirmed that the supplemental data do not alter any other disclosures in the 2025 Annual Report.