香港聯合交易所有限公司與證券及期貨事務監察委員會對本申請版本的內容概不負責，對其準確性或完整 性亦不發表任何意見，並明確表示概不就因本申請版本全部或任何部分內容而產生或因倚賴該等內容而引 致的任何損失承擔任何責任。 PrimeGenX Therapeutics Co., Ltd. 北京普祺醫藥科技股份有限公司 （於中華人民共和國註冊成立的股份有限公司） 的申請版本 警 告 本申請版本乃根據香港聯合交易所有限公司（「聯交所」）及證券及期貨事務監察委員會（「證監會」）的要求 而刊發，僅用作提供資訊予香港公眾人士。 本申請版本為草擬本，其內所載資訊並不完整，亦可能會作出重大變動。您閱覽本文件，即代表您知悉、 接納並向北京普祺醫藥科技股份有限公司（「本公司」）、其聯席保薦人、整體協調人、顧問或包銷團成員 表示同意： 倘於適當時候向香港公眾人士提出要約或邀請，準投資者務請僅依據呈交香港公司註冊處註冊的本公司招 股章程作出投資決定；有關文本將於發售期內向公眾人士刊發。 (i) 本文件僅為向香港公眾人士提供有關本公司的資料，概無任何其他目的；投資者不應根據本文件中 的資料作出任何投資決定； (ii) 在聯交所網站登載本文件 ...

Core Viewpoint - Lingke Pharmaceutical (Zhejiang) Co., Ltd. has submitted its IPO application to the Hong Kong Stock Exchange, focusing on innovative small molecule inhibitors for autoimmune and inflammatory diseases, particularly in the JAK-STAT signaling pathway [1][2]. Company Overview - Lingke Pharmaceutical has completed multiple rounds of financing, raising over 1 billion RMB, with notable investments from institutions like Eli Lilly Asia Fund and Junlian Capital [1]. - The company has a strong focus on R&D, with its lead product LNK01001 currently in Phase III clinical trials for atopic dermatitis, rheumatoid arthritis, and ankylosing spondylitis [5][12]. Financial Performance - The company reported revenues of 20.573 million RMB in 2023, with projected revenues of 16.978 million RMB in 2024 and 54.780 million RMB in the first three quarters of 2025 [4]. - Lingke Pharmaceutical has incurred significant net losses, totaling 2.6 billion RMB in 2023, 3.12 billion RMB in 2024, and 1.45 billion RMB in the first three quarters of 2025, with cumulative losses reaching 7.17 billion RMB [2][4]. - As of September 30, 2025, the company had cash and cash equivalents of 147 million RMB, indicating a liquidity pressure with an estimated operational runway of about 15 months [3]. R&D Pipeline - The company is advancing several differentiated small molecule drugs targeting autoimmune and inflammatory diseases, with LNK01001 being the most advanced [5]. - LNK01004, a third-generation pan-JAK inhibitor, has shown promising results in Phase II trials and is expected to enter Phase III trials in mid-2027 [5]. - The IsoNova protein degradation platform has been established to enhance R&D efficiency, producing several preclinical candidates [5]. Market Landscape - The JAK inhibitor market is experiencing significant growth, with global market size projected to expand from $5.5 billion in 2019 to $25.6 billion by 2028 [7][8]. - The Chinese market for JAK inhibitors is also expected to grow from 400 million RMB in 2019 to 17.1 billion RMB by 2028, indicating strong clinical demand [7][8]. - Lingke Pharmaceutical's LNK01001 faces competition from established products in the market, which may impact its commercial success [12].