China Castson 81 Finance Company Limited (stock code 00810) has issued a Provisional Allotment Letter (PAL) detailing its forthcoming rights issue.

Key Terms • Allotment ratio: Five (5) rights shares for every two (2) shares held on the record date. • Subscription price: HK$0.102 per rights share. • Record date: Thursday, 12 March 2026. • Ex-rights trading: From Wednesday, 4 March 2026. • Nil-paid rights trading window: Tuesday, 17 March 2026 to Tuesday, 24 March 2026 (both dates inclusive). • Latest time to accept and pay: 4:00 p.m., Friday, 27 March 2026. • Long-stop date for conditions: Tuesday, 14 April 2026. • Expected dispatch of fully-paid share certificates or refund cheques: On or before Tuesday, 21 April 2026.

Underwriting and Compensatory Arrangements The transaction is non-fully underwritten. Unsubscribed rights shares and any rights not taken up by non-qualifying shareholders will be placed to independent investors under compensatory arrangements. Any balance not placed will be absorbed by the underwriter up to the agreed limit; remaining shares, if any, will not be issued, thereby reducing the final size of the rights issue.

Termination Triggers The underwriter may terminate the agreement before the latest time for termination if any of the following occurs: 1. Material adverse changes in law, regulation, market conditions or the Group’s business and financial position. 2. Significant market disruptions such as trading suspensions, extreme weather events, war or civil disorder. 3. Breach of warranties or undertakings by the Company.

Listing & Settlement Subject to approval for listing on, and permission to deal in, both nil-paid and fully-paid rights shares, Hong Kong Securities Clearing Company (HKSCC) will accept the securities for CCASS settlement from the first day of trading in each respective form. Transactions will settle on T+2.

Investor Caution The rights issue will proceed only after all conditions are satisfied and the underwriting agreement remains in force. Shareholders or parties trading the shares or nil-paid rights shares before fulfilment of all conditions bear the risk that the transaction may not become unconditional.

Proceeds Use The PAL does not disclose intended use of proceeds; only information within the circular has been reported.

All times refer to Hong Kong local time.