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- Everest will invest US$30.9 million (equivalent to approximately HK$242.6 million) in cash in I-Mab. Inclusive of I-MAB shares already held by Everest, the pro forma ownership will be 16.1%.

- I-Mab's Claudin 18.2 x 4-1BB bispecific antibody, givastomig, demonstrated an impressive overall response rate (ORR) of 83% in combination with immunotherapy in a Phase 1b trial of first line gastric cancers.

- I-Mab's differentiated 4-1BB receptor targeting platform and bispecific antibody pipeline are highly complementary with the Company's existing mRNA cancer vaccines and in vivo CAR-T platform.

- Complementary and synergistic clinical development and business development platforms, especially I-Mab's unique clinical translational capabilities, particularly in the U.S., and Everest's clinical capabilities in Asia, could help accelerate the development and global expansion of pipeline products for both companies.

-听 New investors in this offering also include Janus Henderson Investors, Adage Capital Partners LP, Woodline Partners, and Exome Asset Management

SHANGHAI, Aug. 1, 2025 /PRNewswire/ -- Everest Medicines (HKEX 1952.HK, "Everest", or the "Company"), a biopharmaceutical company focused on the discovery, clinical development, manufacturing, and commercialization of innovative therapeutics, today announced that it has made a strategic equity investment in I-Mab, (''I-Mab''), a company listed on the Nasdaq Global Market (''Nasdaq'') trading under the symbol ''IMAB".

"This strategic equity investment furthers our plan to be an active player in next-generation oncology programs across global markets. Everest and its Board of Directors believe this investment recognizes I-Mab's unique clinical translational capabilities in the U.S., which are complementary and synergistic with the Company's strong Asia presence," said听Rogers Yongqing Luo, Chief Executive Officer of Everest Medicines. "As a biotech pioneer in China, Everest has built internally developed pipeline assets including mRNA therapeutic cancer vaccines and in vivo CAR-T therapies targeting cancer and autoimmune diseases. Our areas of focus meaningfully intersect with I-Mab's differentiated 4-1BB platform and bispecific antibody pipeline, including oncology candidates Givastomig (Claudin 18.2 x 4-1BB bispecific antibody) and Ragistomig (PD-L1 x 4-1BB bispecific antibody), both promising programs that we are closely watching. Furthermore, both companies may be able to leverage their combined expertise to run clinical programs in both China and the U.S. Everest is proud to develop innovative and valuable therapies that can benefit cancer patients globally."

Financial Terms and Corporate Updates:

I-Mab today announced an underwritten offering of 33,333,334 American Depositary Shares (the "ADSs") representing 76,666,668 ordinary shares at an offering price of $1.95 per ADS, for total gross proceeds of approximately US$65 million. Under the arrangement of this offering, Everest will subscribe for听15,846,154听ADSs (the "Subscription"), with an aggregate consideration of US$30.9 million. Upon completion of the Subscription, the Company shall hold an aggregate of听15,846,154 ADSs and听6,078,571 ordinary shares, representing approximately听16.1% of the total issued share capital of I-Mab, inclusive of 6,078,571 ordinary shares already held by Everest.

As all of the applicable percentage ratios of the Subscription are less than 5%, the Subscription is not subject to the announcement or shareholders' approval requirements under Chapter 14 of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

The investment in I-Mab shares is expected to be booked as "investments" under non-current assets on Everest's balance sheet. Changes from "mark-to-market" are expected to be reflected in fair value through other comprehensive income in the statement of changes in equity and the investment has no impact on the Company's P/L statement and will not appear as an operating expense.

I-Mab is a U.S.-based, global biotech company, focused on the development of precision听immuno-oncology agents for the treatment of cancer. There are three pipeline products of I-Mab in clinical stage, Givastomig (Claudin 18.2 x 4-1BB bispecific antibody), Ragistomig (PD-L1 x 4-1BB bispecific antibody) and Uliledlimab (CD73 antibody).

I-Mab recently presented positive Phase 1b dose escalation results for givastomig in combination with immunotherapy in first line gastric cancer (ORR of 83%) at the ESMO GI 2025 conference which are summarized .

About Everest Medicines

Everest Medicines is a biopharmaceutical company focused on discovering, developing, manufacturing and commercializing transformative pharmaceutical products and vaccines that address critical unmet medical needs for patients in Asian markets. The management team of Everest Medicines has deep expertise and an extensive track record from both leading global pharmaceutical companies and local Chinese pharmaceutical companies in high-quality discovery, clinical development, regulatory affairs, CMC, business development and operations. Everest Medicines has built a portfolio of potentially global first-in-class or best-in-class molecules in the company's core therapeutic areas of renal diseases, infectious diseases and autoimmune disorders.

For more information, please visit its website at .

About听I-Mab

I-Mab听(NASDAQ: IMAB) is a听U.S.-based, global biotech company, focused on the development of precision immuno-oncology agents for the treatment of cancer. The Company's differentiated pipeline is led by givastomig, a potential best-in-class, bispecific antibody (Claudin 18.2 x 4-1BB) designed to treat Claudin 18.2-positive gastric cancers. Givastomig conditionally activates T cells via the 4-1BB signaling pathway in the tumor microenvironment where Claudin 18.2 is expressed. Givastomig is being developed for first line metastatic gastric cancers, with additional potential in other solid tumors. In ongoing Phase 1 trials, givastomig has been observed to maintain strong tumor-binding and anti-tumor activity, attributable to a potential synergistic effect of proximal interaction with Claudin 18.2 and 4-1BB, while minimizing toxicities commonly seen with other 4-1BB agents.

For more information, please visit听 and follow us on听LinkedIn and听X.

Forward-Looking Statements:

This news release may make statements that constitute forward-looking statements, including descriptions regarding the intent, belief or current expectations of the Company or its officers with respect to the business operations and financial condition of the Company, which can be identified by terminology such as "will,"听"expects,"听"anticipates,"听"future,"听"intends,"听"plans,"听"believes,"听"estimates,"听"confident"听and similar statements. Such forward-looking statements are not guarantees of future performance and involve risks and uncertainties, or other factors, some of which are beyond the control of the Company and are unforeseeable. Therefore, the actual results may differ from those in the forward-looking statements as a result of various factors and assumptions, such as future changes and developments in our business, competitive environment, political, economic, legal and social conditions. The Company or any of its affiliates, directors, officers, advisors or representatives has no obligation and does not undertake to revise forward-looking statements to reflect new information, future events or circumstances after the date of this news release, except as required by law.

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SOURCE Everest Medicines