LakeShore Biopharma Co., Ltd. Sample Contracts

INDEMNIFICATION AGREEMENT
Indemnification Agreement • December 28th, 2022 • YishengBio Co., LTD • Pharmaceutical preparations

WHEREAS, the Company wishes for the Indemnitee to serve on its Board of Directors (the “Board”) or as an officer of the Company and wishes to provide the Indemnitee with specific contractual assurance of the Indemnitee’s rights to indemnification against litigation risks and expenses arising from his position as a Director or Officer (as defined below) to the full extent permitted by applicable law;

SHARE PURCHASE AGREEMENT
Share Purchase Agreement • August 15th, 2024 • LakeShore Biopharma Co., Ltd. • Pharmaceutical preparations • New York

This Share Purchase Agreement (this “Agreement”) is made as of February 7, 2024 by and between YS Biopharma Co., Ltd., an exempted company incorporated in the Cayman Islands (the “Company”) and the purchaser identified on the signature pages hereto (the “Purchaser”). The Company, on one hand, and the Purchaser, on the other hand, are sometimes each referred to herein as a “Party” and collectively as the “Parties.”

Finance Lease Contract (Sale and leaseback)
Finance Lease Contract • July 31st, 2025 • LakeShore Biopharma Co., Ltd. • Pharmaceutical preparations • Hong Kong

This Contract is voluntarily entered into by the Lessor and the lessee in accordance with the provisions of the Civil Code of the People’s Republic of China and relevant laws and regulations upon mutual agreement between the parties.

SHAREHOLDER SUPPORT AGREEMENT AND DEED
Shareholder Support Agreement • September 29th, 2022 • YishengBio Co., LTD • Blank checks • New York

This Shareholder Support Agreement and Deed (this “Agreement”) is made and entered into September 29, 2022, by and among (i) YishengBio Co., Ltd., a Cayman Islands exempted company (the “Company”), (ii) Summit Healthcare Acquisition Corp., a Cayman Islands exempted company (“SPAC”), (iii) Summit Healthcare Acquisition Sponsor LLC, a Cayman Islands limited liability company (“Sponsor”), (iv) certain Persons listed on Schedule A hereto (each, a “YSB Shareholder” and collectively, the “YSB Shareholders”), and (v) certain individuals listed on Schedule B hereto, each of whom is a member of the SPAC Board as of the date hereof (together with Sponsor, the “SPAC Shareholders” and each, a “SPAC Shareholder”). The YSB Shareholders and SPAC Shareholders are hereinafter collectively referred to herein as the “Shareholders” and each individually as a “Shareholder.” Capitalized terms used herein but not defined herein shall have the meaning ascribed to such terms in the Business Combination Agreeme

AGREEMENT AND PLAN OF MERGER by and among OCEANPINE SKYLINE INC. OCEANPINE MERGER SUB INC. and lakeshore biopharma co., ltd
Merger Agreement • November 4th, 2025 • LakeShore Biopharma Co., Ltd. • Pharmaceutical preparations • New York

THIS AGREEMENT AND PLAN OF MERGER, dated as of November 4, 2025 (this “Agreement”), is entered into by and among LakeShore Biopharma Co., Ltd, an exempted company with limited liability incorporated under the Laws of the Cayman Islands and formerly known as YishengBio Co., Ltd and YS Biopharma Co., Ltd. (the “Company”), Oceanpine Skyline Inc., an exempted company with limited liability incorporated under the Laws of the Cayman Islands (“Parent”), and Oceanpine Merger Sub Inc., an exempted company with limited liability incorporated under the Laws of the Cayman Islands and a wholly-owned subsidiary of Parent (“Merger Sub”) (each of the Company, Parent and Merger Sub, a “Party,” and collectively, the “Parties”). Capitalized terms used herein (including in the immediately preceding sentence) and not otherwise defined herein shall have the meanings set forth in Section 1.1 hereof.

PLAN OF MERGER
Plan of Merger • April 12th, 2023 • YS Biopharma Co., Ltd. • Pharmaceutical preparations
Finance Lease Contract (Sale and Leaseback)
Finance Lease Contract (Sale and Leaseback) • July 31st, 2025 • LakeShore Biopharma Co., Ltd. • Pharmaceutical preparations • Hong Kong

This Contract is voluntarily entered into by the Lessor and the lessee in accordance with the provisions of the Civil Code of the People’s Republic of China and relevant laws and regulations upon mutual agreement between the parties.

SHARE AND WARRANT PURCHASE AGREEMENT
Share and Warrant Purchase Agreement • July 31st, 2025 • LakeShore Biopharma Co., Ltd. • Pharmaceutical preparations • New York

This Share and Warrant Purchase Agreement (this “Agreement”) dated as of July 8, 2025 by and between LakeShore Biopharma Co., Ltd (the “Company”), an exempted company with limited liability incorporated under the laws of the Cayman Islands, and Crystal Peak Investment Inc. (the “Purchaser”), a private company with limited liability incorporated under the laws of British Virgin Islands. The Company and the Purchaser are each referred to as a “Party” and collectively as the “Parties.”

WARRANT ASSIGNMENT AGREEMENT Among Summit HEALTHCARE ACQUISITION CORP., Yishengbio co., ltd. and CONTINENTAL STOCK TRANSFER & TRUST COMPANY Dated September 29, 2022
Warrant Assignment Agreement • September 29th, 2022 • YishengBio Co., LTD • Blank checks • New York

This Warrant Assignment Agreement (this “Agreement”), dated September 29, 2022, is made by and among Summit Healthcare Acquisition Corp., a Cayman Islands exempted company (“SPAC”), YishengBio Co., Ltd., a Cayman Islands exempted company (the “Company”), and Continental Stock Transfer & Trust Company, a New York corporation, as warrant agent (in such capacity, the “Warrant Agent”) and amends the Warrant Agreement (the “Existing Warrant Agreement”), dated June 8, 2021, by and between SPAC and the Warrant Agent. Capitalized terms used but not defined herein shall have the meaning ascribed to such terms in the Existing Warrant Agreement.

EMPLOYMENT AGREEMENT
Employment Agreement • August 15th, 2024 • LakeShore Biopharma Co., Ltd. • Pharmaceutical preparations • New York

This EMPLOYMENT AGREEMENT (the “Agreement”) is entered into as of [DATE] by and between LakeShore Biopharma Co., Ltd. (the “Company”), an exempted company duly incorporated and validly existing under the law of the Cayman Islands, and [NAME], an individual (the “Executive”). The term “Company” as used herein with respect to all obligations of the Executive hereunder shall be deemed to include the Company and all of its direct or indirect parent companies, subsidiaries, affiliates, or subsidiaries or affiliates of its parent companies (collectively, the “Group”).