Exhibit 10.3

FORM OF

LOCK-UP AGREEMENT

THIS LOCK-UP AGREEMENT (this “Agreement”) is made as of [●], 2024 by and among Aptorum Group Limited, a Cayman Islands company, which will be known after the consummation of the transactions contemplated by the Merger Agreement (as defined below) as “YOOV Group Holding Limited” or such other name as agreed by the parties to the Merger Agreement (including any successor entity thereto, the “ListCo”), and the undersigned (“Holder”). Any capitalized term used but not defined in this Agreement will have the meaning ascribed to such term in the Merger Agreement (as defined herein below).

WHEREAS, on March 1, 2024, ListCo entered into that certain Merger Agreement (as amended from time to time in accordance with the terms thereof, the “Merger Agreement”), by and among (i) ListCo and (ii) YOOV Group Holding Limited, a British Virgin Islands company (the “Company”), pursuant to which a wholly owned direct subsidiary of ListCo (the “Merger Sub”) will merge with and into the Company, with the Company continuing as the surviving entity and a wholly-owned subsidiary of ListCo (the “Merger”), and as a result of which, among other matters, all of the issued and outstanding ordinary shares of the Company, immediately prior to the consummation of the Merger (the “Closing”), shall no longer be outstanding and shall automatically be cancelled and shall cease to exist, in exchange for ListCo Class A Ordinary Shares and/or ListCo Class B Ordinary Shares, as adjusted by the Conversion Ratio, and each outstanding Company Redeemable Convertible Preferred Share shall be converted into such number of ListCo Ordinary Shares, as adjusted by the Conversion Ratio.

WHEREAS, immediately following the Closing, each Holder will be a beneficial holder of the ListCo’s securities, in such amounts as set forth underneath Holder’s name on the signature page hereto; and

WHEREAS, pursuant to the Merger Agreement, and in view of the valuable consideration to be received by Holder thereunder, ListCo and Holder desire to enter into this Agreement, pursuant to which the ListCo Class A Ordinary Shares and the ListCo Class B Ordinary Shares beneficially owned by Holder immediately following the closing of the Merger (all such securities, together with any securities paid as dividends or distributions with respect to such securities or into which such securities are exchanged or converted, the “Restricted Securities”) shall become subject to limitations on disposition as set forth herein.

NOW, THEREFORE, in consideration of the premises set forth above, which are incorporated in this Agreement as if fully set forth below, and intending to be legally bound hereby, the parties hereby agree as follows:

1. Lock-Up Provisions.

(a)  Holder hereby agrees not to, during the period commencing from the Closing and, with respect to the Restricted Securities, ending on the earliest of (x) the 180 day anniversary of the date of the Closing and (y) the date after the Closing on which ListCo consummates a liquidation, merger, share exchange or other similar transaction with an unaffiliated third party that results in all of ListCo’s shareholders having the right to exchange their equity holdings in ListCo for cash, securities or other property (a “Subsequent Transaction”), (the “Lock-Up Period”): (i) lend, offer, pledge, hypothecate, encumber, donate, assign, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, or otherwise transfer or dispose of, directly or indirectly, any Restricted Securities, (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Restricted Securities, or (iii) publicly disclose the intention to do any of the foregoing, whether any such transaction described in clauses (i), (ii), or (iii) above is to be settled by delivery of Restricted Securities or other securities, in cash or otherwise (any of the foregoing described in clauses (i), (ii), or (iii), a “Prohibited Transfer”); provided, however, that the foregoing shall not preclude Holder from engaging in any transaction in the securities of another company in the same sector or in a similar sector as that of ListCo. The foregoing sentence shall not apply to the transfer of any or all of the Restricted Securities owned by Holder, (A) by gift, will or intestate succession upon the death of Holder, (B) to any Permitted Transferee or (C) pursuant to a court order or settlement agreement related to the distribution of assets in connection with the dissolution of marriage or civil union; provided, however, that in any of cases (A), (B) or (C) it shall be a condition to such transfer that the transferee executes and delivers to ListCo an agreement stating that the transferee is receiving and holding the Restricted Securities subject to the provisions of this Agreement applicable to Holder, and there shall be no further transfer of such Restricted Securities except in accordance with this Agreement. As used in this Agreement, the term “Permitted Transferee” shall mean: (1) the members of Holder’s immediate family (for purposes of this Agreement, “immediate family” shall mean any relationship by blood, marriage or adoption, not more remote than first cousin), (2) any trust for the direct or indirect benefit of Holder or the immediate family of Holder, (3) if Holder is a trust, to the trustor or beneficiary of such trust or to the estate of a beneficiary of such trust, (4) as a distribution to limited partners, shareholders, members of, or owners of similar equity interests in Holder upon the liquidation and dissolution of Holder or (5) to any affiliate of Holder or to any investment fund or other entity controlled by Holder.

(b)  Intentionally omitted.

(c)  If any Prohibited Transfer is made or attempted contrary to the provisions of this Agreement, such purported Prohibited Transfer shall be null and void ab initio, and ListCo shall refuse to recognize any such purported transferee of the Restricted Securities as one of its equity holders for any purpose. In order to enforce this Section 1, ListCo may impose stop-transfer instructions with respect to the Restricted Securities of Holder (and permitted transferees and assigns thereof) until the end of the Lock-Up Period.

(d)  During the Lock-Up Period, each certificate evidencing any Restricted Securities shall be stamped or otherwise imprinted with a legend in substantially the following form, in addition to any other applicable legends:

“THE SECURITIES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO RESTRICTIONS ON TRANSFER SET FORTH IN A LOCK-UP AGREEMENT, DATED AS OF [●], 2024, BY AND AMONG THE ISSUER OF SUCH SECURITIES (THE “LISTCO”) AND LISTCO’S SHAREHOLDER NAMED THEREIN, AS AMENDED. A COPY OF SUCH LOCK-UP AGREEMENT WILL BE FURNISHED WITHOUT CHARGE BY LISTCO TO THE HOLDER HEREOF UPON WRITTEN REQUEST.”

(e)  For the avoidance of any doubt, Holder shall retain all of its rights as a shareholder of ListCo during the Lock-Up Period, including the right to vote any Restricted Securities.

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(f)  Intentionally omitted.

2. Miscellaneous.

(a) Termination of Merger Agreement. Notwithstanding anything to the contrary contained herein, in the event that the Merger Agreement is terminated in accordance with its terms prior to the Closing, this Agreement and all rights and obligations of the parties hereunder shall automatically terminate and be of no further force or effect.

(b) Binding Effect; Assignment. This Agreement and all of the provisions hereof shall be binding upon and inure to the benefit of the parties hereto and their respective permitted successors and assigns. This Agreement and all obligations of Holder are personal to Holder and may not be transferred or delegated by Holder at any time. ListCo may freely assign any or all of its rights under this Agreement, in whole or in part, to any successor entity (whether by merger, consolidation, equity sale, asset sale or otherwise) without obtaining the consent or approval of Holder. 

(c) Third Parties. Nothing contained in this Agreement or in any instrument or document executed by any party in connection with the transactions contemplated hereby shall create any rights in, or be deemed to have been executed for the benefit of, any person or entity that is not a party hereto or thereto or a successor or permitted assign of such a party.

(d) Governing Law; Jurisdiction. The terms and provisions of this Agreement shall be construed and enforced in accordance with the laws of the State of New York without reference to its conflict of law provisions. Each of the parties hereto irrevocably consents to the exclusive jurisdiction and venue of any state or federal court located in New York County, New York (or in any court in which appeal from such courts may be taken) in connection with any matter based upon or arising out of this Agreement or the matters contemplated herein, agrees that process may be served upon them in any manner authorized by the laws of the State of New York for such Persons and waives and covenants not to assert or plead any objection which they might otherwise have to such jurisdiction, venue and such process.

(e) WAIVER OF JURY TRIAL. EACH OF THE PARTIES HERETO HEREBY WAIVES TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY WITH RESPECT TO ANY ACTION DIRECTLY OR INDIRECTLY ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY. EACH PARTY HERETO (i) CERTIFIES THAT NO REPRESENTATIVE OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF ANY ACTION, SEEK TO ENFORCE THAT FOREGOING WAIVER AND (ii) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 2(e).

(f) Interpretation. The titles and subtitles used in this Agreement are for convenience only and are not to be considered in construing or interpreting this Agreement. In this Agreement, unless the context otherwise requires: (i) any pronoun used in this Agreement shall include the corresponding masculine, feminine or neuter forms, and the singular form of nouns, pronouns and verbs shall include the plural and vice versa; (ii) “including” (and with correlative meaning “include”) means including without limiting the generality of any description preceding or succeeding such term and shall be deemed in each case to be followed by the words “without limitation”; (iii) the words “herein,” “hereto,” and “hereby” and other words of similar import in this Agreement shall be deemed in each case to refer to this Agreement as a whole and not to any particular section or other subdivision of this Agreement; and (iv) the term “or” means “and/or”. The parties have participated jointly in the negotiation and drafting of this Agreement. Consequently, in the event an ambiguity or question of intent or interpretation arises, this Agreement shall be construed as if drafted jointly by the parties hereto, and no presumption or burden of proof shall arise favoring or disfavoring any party by virtue of the authorship of any provision of this Agreement.

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(g) Notices. Any notice, consent or request to be given in connection with any of the terms or provisions of this Agreement shall be completed in accordance with Section 11.02 of the Merger Agreement.

(h) Amendments and Waivers. Any term of this Agreement may be amended and the observance of any term of this Agreement may be waived (either generally or in a particular instance, and either retroactively or prospectively) only with the written consent of ListCo and Holder. No failure or delay by a party in exercising any right hereunder shall operate as a waiver thereof. No waivers of or exceptions to any term, condition, or provision of this Agreement, in any one or more instances, shall be deemed to be or construed as a further or continuing waiver of any such term, condition, or provision.

(i) Severability. In case any provision in this Agreement shall be held invalid, illegal or unenforceable in a jurisdiction, such provision shall be modified or deleted, as to the jurisdiction involved, only to the extent necessary to render the same valid, legal and enforceable, and the validity, legality and enforceability of the remaining provisions hereof shall not in any way be affected or impaired thereby nor shall the validity, legality or enforceability of such provision be affected thereby in any other jurisdiction. Upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the parties will substitute for any invalid, illegal or unenforceable provision a suitable and equitable provision that carries out, so far as may be valid, legal and enforceable, the intent and purpose of such invalid, illegal or unenforceable provision.

(j) Specific Performance. Holder acknowledges that its obligations under this Agreement are unique, recognizes and affirms that in the event of a breach of this Agreement by Holder, money damages may be inadequate and ListCo may have not adequate remedy at law, and agrees that irreparable damage would occur in the event that any of the provisions of this Agreement were not performed by Holder in accordance with their specific terms or were otherwise breached. Accordingly, ListCo shall be entitled to seek an injunction or restraining order to prevent breaches of this Agreement by Holder and to seek to enforce specifically the terms and provisions hereof, without the requirement to post any bond or other security or to prove that money damages would be inadequate, this being in addition to any other right or remedy to which such party may be entitled under this Agreement, at law or in equity.

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(k) Entire Agreement. This Agreement constitutes the full and entire understanding and agreement among the parties with respect to the subject matter hereof, and any other written or oral agreement relating to the subject matter hereof existing between the parties is expressly canceled; provided, that, for the avoidance of doubt, the foregoing shall not affect the rights and obligations of the parties under the Merger Agreement. Notwithstanding the foregoing, nothing in this Agreement shall limit any of the rights or remedies of ListCo or any of the obligations of Holder under any other agreement between Holder and ListCo or any certificate or instrument executed by Holder in favor of ListCo, and nothing in any other agreement, certificate or instrument shall limit any of the rights or remedies of ListCo or any of the obligations of Holder under this Agreement.

(l) Further Assurances. From time to time, at another party’s request and without further consideration (but at the requesting party’s reasonable cost and expense), each party shall execute and deliver such additional documents and take all such further action as may be reasonably necessary to consummate the transactions contemplated by this Agreement.

(m) Counterparts; Facsimile.  This Agreement may also be executed and delivered by facsimile signature or by email in portable document format in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

[Signature Pages Follow]

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IN WITNESS WHEREOF, the parties have executed this Lock-Up Agreement as of the date first written above.

LISTCO:
Aptorum Group Limited
By:
Name:	Ian Huan
Title:	Chief Executive Officer

[Signature Page to Lock-Up Agreement]

IN WITNESS WHEREOF, the parties have executed this Lock-Up Agreement as of the date first written above. 

Holder: [Name of the Holder]

By:

Name:

Title:

Number of shares of ListCo Securities:

ListCo Class A Ordinary Shares : ______________________________________

ListCo Class B Ordinary Shares : ______________________________________

Address for Notice: _______________________________________

______________________________________________________________ 

______________________________________________________________

Facsimile No.: ___________________________________________________

Telephone No.: __________________________________________________

Email: _________________________________________________________

[Signature Page to Lock-Up Agreement]