Core Viewpoint - Inpai Pharmaceuticals has submitted a listing application to the Hong Kong Stock Exchange, with Goldman Sachs and CICC as joint sponsors [1] Group 1: Company Overview - Inpai Pharmaceuticals is a commercial-stage biotechnology company focused on precision cancer therapies based on synthetic lethality mechanisms [1] - The company's core product, Senaparib (PARP1/2 inhibitor), was approved in China for first-line maintenance treatment of ovarian cancer in January 2025 and is now commercialized [1] - Senaparib has been accepted by the European Medicines Agency (EMA) and is expected to receive approval in the second half of 2026, with plans to participate in negotiations for inclusion in China's National Medical Insurance Drug List in Q4 2025 [1] Group 2: Product Pipeline - Inpai Pharmaceuticals has multiple clinical-stage assets, including IMP1734 (selective PARP1 inhibitor), IMP9064 (selective ATR inhibitor), and IMP1707 (selective PARP1 inhibitor) [1] - The company's pipeline also includes preclinical candidates targeting WEE1, PKMYT1/WEE1, DHX9, ATM, USP1, and CHK1/2 [1] Group 3: Fundraising Purpose - The funds raised will be used for the development and commercialization of the core product Senaparib, clinical development of key products IMP1734 and IMP9064, and research and development of other pipeline assets [1]

Core Insights - The company, established in 2009, is a biotechnology firm focused on the global development of precision cancer therapies based on synthetic lethality mechanisms, possessing a comprehensive and advanced product portfolio [1] Product Highlights - The core product, Senaparib, is a PARP1/2 inhibitor approved for first-line maintenance treatment of ovarian cancer in China as of January 2025, demonstrating the largest progression-free survival benefit among approved PARP inhibitors for this indication [2] - Senaparib's marketing authorization application has been accepted by the European Medicines Agency, with an expected approval in the second half of 2026 [2] - The company has signed a commercial agreement with a subsidiary of Huadong Medicine for the commercialization of Senaparib in China, aiming to establish the largest gynecological oncology platform in the country [2] Pipeline Overview - The company has a diverse pipeline including several clinical-stage and preclinical assets targeting PARP and other key synthetic lethality pathways [3] - IMP1734, a next-generation selective PARP1 inhibitor, is currently in global Phase I/II trials, with plans to initiate Phase II in the second half of 2025 [3] - IMP9064, a potential first-in-class selective ATR inhibitor in China, is also in global Phase I/II trials and has received approval for combination studies with Senaparib [4] - IMP1707, a selective PARP1 inhibitor capable of penetrating the central nervous system, is undergoing Phase I clinical evaluation [5] - Other assets include preclinical candidates targeting WEE1, PKMYT1/WEE1, DHX9, ATM, USP1, and CHK1/2, as well as next-generation ADCs and protein degraders [6] Financial Performance - The company reported losses of approximately RMB 199.9 million, RMB 255.5 million, and RMB 129 million for the years ending December 31, 2023, December 31, 2024, and the six months ending June 30, 2025, respectively, primarily due to ongoing R&D investments [7] - Revenue sources include licensing income and pharmaceutical product sales, with total revenues of RMB 235.2 million for 2023 and RMB 33.5 million for the first half of 2024 [8] - The funds raised from the IPO are intended for the clinical development, regulatory approval, and commercialization of Senaparib, as well as the clinical development of key products IMP1734 and IMP9064, and other pipeline assets [8]

Core Viewpoint - Nanjing Inpai Pharmaceutical Co., Ltd. has submitted a listing application to the Hong Kong Stock Exchange, with Goldman Sachs and CICC as joint sponsors [1] Company Overview - Established in 2009, Inpai Pharmaceutical is a biotechnology company focused on the global development of precision cancer therapies based on synthetic lethality mechanisms [4] - It is one of only three companies globally that possess both commercial-stage PARP1/2 inhibitors and clinical-stage next-generation PARP1 selective inhibitors [4] Key Product - The core product, Senaparib, is a PARP1/2 inhibitor that has been approved and commercialized in China for first-line maintenance treatment of ovarian cancer as of January 2025 [5] - Senaparib demonstrated the greatest progression-free survival benefit among approved PARP inhibitors for this indication, with good tolerability [5] - The marketing authorization application for Senaparib has been accepted by the European Medicines Agency, with approval expected in the second half of 2026 [5] - The product has been recommended for inclusion in China's National Medical Insurance Drug List, with negotiations planned for the fourth quarter of 2025 [5] - A sales service agreement has been signed with a subsidiary of Huadong Medicine to commercialize Senaparib in China, aiming to create the largest gynecological oncology platform in the country [5] - As of August 20, 2025, Senaparib has entered over 200 DTP pharmacies and covers more than 600 medical institutions [5] Product Pipeline - The company has a rich and differentiated product pipeline, including several clinical-stage and preclinical assets targeting PARP and other key synthetic lethality pathways [6] - IMP1734 is a next-generation PARP1 selective inhibitor currently in global I/II trials, with plans to initiate Phase II in the second half of 2025 [6] - IMP9064 is a potential first-in-class ATR selective inhibitor in China, also in global I/II trials, approved for combination studies with Senaparib [6] - IMP1707 is a PARP1 selective inhibitor capable of penetrating the central nervous system, currently undergoing Phase I clinical evaluation [6] - Other assets include clinical candidates targeting WEE1, PKMYT1/WEE1, DHX9, ATM, USP1, and CHK1/2, as well as next-generation ADCs and protein degraders [6] Financial Performance and Fund Utilization - The company reported losses of approximately RMB 199.9 million, RMB 255.5 million, and RMB 129 million for the years ending December 31, 2023, December 31, 2024, and the six months ending June 30, 2025, respectively, primarily due to ongoing R&D investments [7] - Revenue sources include licensing income and pharmaceutical product sales, with total revenues of RMB 235.2 million for 2023 [9] - The funds raised from the listing are planned for clinical development, regulatory approval, and commercialization of Senaparib, as well as the clinical development of key products IMP1734 and IMP9064, and other pipeline assets [9]

IMPACT Therapeutics, Inc. 南京英派藥業股份有限公司 （於中華人民共和國成立的股份有限公司） 的申請版本 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。 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，僅用作提供資料予香港公眾人士。 本申請版本為草擬本，其內所載資料並不完整，亦可能會作出重大變動。 閣下閱覽本文件，即代表 閣 下知悉、接納並向南京英派藥業股份有限公司（「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： 本公司招股章程根據香港法例第32章公司（清盤及雜項條文）條例送呈香港公司註冊處處長登記前，本公司 不會向香港公眾人士提出要約或邀請。倘於適當時候向香港公眾人士提出要約或邀請，有意投資者務請僅依 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；該招股章程的副本將於發售期內向公眾刊發。 (a) 本文件僅為向香港公眾人士提供 ...

The Stock Exchange of Hong Kong Limited and the Securities and Futures Commission take no responsibility for the contents of this Application Proof, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this Application Proof. Application Proof of IMPACT Therapeutics, Inc. 南京英派藥業股份有限公司 (A joint stock company established in the People's Republic of China with li ...