BRAINHOLE TECHNOLOGY LIMITED 脑洞科技有限公司 （ Incorporated in the Cayman Islands with limited liability ） （於開曼群島註冊成立的有限公司） （Stock Code 股份代號：2203） NOTIFICATION LETTER 通 知 信 函 Dear Shareholder(s), 16 April 2026 The following document(s) of Brainhole Technology Limited ("Company") has/have been prepared in English and Chinese and is/are available on the websites of the Company at www.brainholetechnology.com and The Stock Exchange of Hong Kong Limited at www.hkexnews.hk (collectively "Websites"):- • Circular dated 16 ...