Document:

Exhibit 10.1

 

INDEMNIFICATION
AGREEMENT

 

This Indemnification
Agreement (“Agreement”) is made as of ____________ by and between PaxMedica, Inc., a Delaware corporation (the
 “Company”), and ____________ (“Indemnitee”).

 

RECITALS

 

WHEREAS, highly competent
persons have become more reluctant to serve publicly-held corporations as directors or officers or in other capacities unless they
are provided with adequate protection through insurance or adequate indemnification against inordinate risks of claims and actions
against them arising out of their service to and activities on behalf of the corporation and due to the fact that such exposure
frequently bears no relationship to compensation paid to such officers and directors;

 

WHEREAS, the Company
and Indemnitee recognize that plaintiffs often seek damages in such large amounts and the costs of litigation may be so enormous
(whether or not the case is meritorious), that the defense and/or settlement of such litigation is often beyond the personal resources
of directors and officers;

 

WHEREAS, Indemnitee
may be entitled to indemnification pursuant to the General Corporation Law of the State of Delaware (the “DGCL”). The
Company’s Certificate of Incorporation, as amended, provides for the indemnification of the officers and directors of the
Company to the fullest extent permitted by Section 145 of the DGCL. The DGCL expressly provides that the indemnification provisions
set forth therein are not exclusive and contemplate that contracts may be entered into between the Company and its directors and
officers with respect to indemnification;

 

WHEREAS, Section 145
of the DGCL empowers the Company to indemnify its officers, directors, employees and agents by agreement and to indemnify persons
who serve, at the Company’s request, as the directors, officers, employees or agents of other corporations or enterprises;

 

WHEREAS, Section 102(b)(7) of
the DGCL allows the Company to include in its Certificate of Incorporation a provision limiting or eliminating the personal liability
of a director for monetary damages in respect of claims by shareholders and corporations for breach of certain fiduciary duties,
and the Company has so provided in its Certificate of Incorporation that each director shall be exculpated from such liability
to the maximum extent permitted by law;

 

WHEREAS, the Company,
after reasonable investigation, has determined that the liability insurance coverage presently available to the Company may be
inadequate in certain circumstances to cover all possible exposure for which Indemnitee should be protected.

 

WHEREAS, the uncertainties
relating to such insurance and to indemnification have increased the difficulty of attracting and retaining highly competent persons
to serve as directors and officers. The Board of Directors of the Company (the “Board”) has determined that the increased
difficulty in attracting and retaining such persons is detrimental to the best interests of the Company’s stockholders and
that the Company should act to assure such persons that there will be increased certainty of such protection in the future;

 

     

     

    

 

WHEREAS, it is reasonable,
prudent and necessary for the Company contractually to obligate itself to indemnify, and to advance expenses on behalf of, such
persons to the fullest extent permitted by applicable law so that they will serve or continue to serve the Company free from undue
concern that they will not be so indemnified;

 

WHEREAS, this Agreement
is a supplement to and in furtherance of the Company’s Certificate of Incorporation and Bylaws and any resolutions adopted
pursuant thereto, and shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder;
and

 

WHEREAS, Indemnitee
does not regard the protection available under the Company's Certificate of Incorporation, Bylaws and insurance as adequate in
the present circumstances, and may not be willing to serve as an officer or director without adequate protection, and the Company
desires Indemnitee to serve in such capacity. Indemnitee is willing to serve, continue to serve and to take on additional service
for or on behalf of the Company on the condition that he be so indemnified;

 

NOW, THEREFORE, in
consideration of the premises and the covenants contained herein, the Company and Indemnitee do hereby covenant and agree as follows:

 

Section 1.             Services
to the Company. Indemnitee agrees to serve as a director or officer of the Company or, at the request of the Company, as a
director, officer, employee, agent or fiduciary of another corporation, partnership, joint venture, trust, employee benefit plan
or other enterprise. Indemnitee may at any time and for any reason resign from such position (subject to any other contractual
obligation or any obligation imposed by operation of law), in which event the Company shall have no obligation under this Agreement
to continue Indemnitee in such position. This Agreement shall not be deemed an employment contract between the Company (or any
of its subsidiaries or any other corporation, limited liability company, partnership, joint venture, trust employee benefit plan
or other enterprise of which Indemnitee was serving at the Company’s request as a director, officer, employee, agent or fiduciary)
and Indemnitee. Indemnitee specifically acknowledges that Indemnitee's employment with the Company (or any of its subsidiaries
or any other corporation, limited liability company, partnership, joint venture, trust employee benefit plan or other enterprise
of which Indemnitee was serving at the Company’s request as a director, officer, employee, agent or fiduciary), if any, is
at will, and the Indemnitee may be discharged at any time for any reason, with or without cause, except as may be otherwise provided
in any written employment contract between Indemnitee and the Company (or any of its subsidiaries or any other corporation, limited
liability company, partnership, joint venture, trust employee benefit plan or other enterprise of which Indemnitee was serving
at the Company’s request as a director, officer, employee, agent or fiduciary). The foregoing notwithstanding, this Agreement
shall continue in force after Indemnitee has ceased to serve as an officer or director of the Company.

 

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Section 2.             Definitions.
As used in this Agreement:

 

(a)          A
 “Change in Control” shall be deemed to occur upon the earliest to occur after the date of this Agreement of any of
the following events:

 

i.          Acquisition
of Stock by Third Party. Any Person (as defined below) is or becomes the Beneficial Owner (as defined below), directly or indirectly,
of securities of the Company representing thirty-five percent (35%) or more of the combined voting power of the Company's then
outstanding securities;

 

ii.         Change
in Board. During any period of two (2) consecutive years (not including any period prior to the execution of this Agreement),
individuals who at the beginning of such period constitute the Board, and any new director (other than a director designated by
a person who has entered into an agreement with the Company to effect a transaction described in Sections 2(a)(i), 2(a)(iii) or
2(a)(iv)) whose election by the Board or nomination for election by the Company's stockholders was approved by a vote of at least
two-thirds of the directors then still in office who either were directors at the beginning of the period or whose election or
nomination for election was previously so approved, cease for any reason to constitute at least a majority of the members of the
Board;

 

iii.        Corporate
Transactions. The effective date of a merger or consolidation of the Company with any other entity, other than a merger or
consolidation which would result in the voting securities of the Company outstanding immediately prior to such merger or consolidation
continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity)
more than 51% of the combined voting power of the voting securities of the surviving entity outstanding immediately after such
merger or consolidation and with the power to elect at least a majority of the board of directors or other governing body of such
surviving entity;

 

iv.        Liquidation.
The approval by the stockholders of the Company of a complete liquidation of the Company or an agreement for the sale or disposition
by the Company of all or substantially all of the Company's assets; and

 

v.         Other
Events. There occurs any other event of a nature that would be required to be reported in response to Item 6(e) of Schedule
14A of Regulation 14A (or a response to any similar item on any similar schedule or form) promulgated under the Exchange Act (as
defined below), whether or not the Company is then subject to such reporting requirement.

 

For purposes of this Section 2(a), the following terms
shall have the following meanings:

 

(A)          “Exchange
Act” shall mean the Securities Exchange Act of 1934, as amended.

 

(B)          “Person”
shall have the meaning as set forth in Sections 13(d) and 14(d) of the Exchange Act; provided, however, that Person shall
exclude (i) the Company, (ii) any trustee or other fiduciary holding securities under an employee benefit plan of the
Company, and (iii) any corporation owned, directly or indirectly, by the stockholders of the Company in substantially the
same proportions as their ownership of stock of the Company.

 

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(C)          “Beneficial
Owner” shall have the meaning given to such term in Rule 13d-3 under the Exchange Act; provided, however, that Beneficial
Owner shall exclude any Person otherwise becoming a Beneficial Owner by reason of the stockholders of the Company approving a merger
of the Company with another entity.

 

(b)          “Corporate
Status” describes the status of a person who is or was a director, officer, employee, agent or fiduciary of the Company or
of any other corporation, limited liability company, partnership or joint venture, trust, employee benefit plan or other enterprise
which such person is or was serving at the request of the Company.

 

(c)          “Disinterested
Director” means a director of the Company who is not and was not a party to the Proceeding in respect of which indemnification
is sought by Indemnitee.

 

(d)          “Expenses”
shall include all reasonable attorneys' fees, retainers, court costs, transcript costs, fees of experts, witness fees, travel expenses,
duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees, and all other disbursements or
expenses of the types customarily incurred in connection with prosecuting, defending, preparing to prosecute or defend, investigating,
being or preparing to be a witness in, or otherwise participating in, a Proceeding. Expenses also shall include (i) Expenses
incurred in connection with any appeal resulting from any Proceeding, including without limitation the premium, security for, and
other costs relating to any cost bond, supersedeas bond, or other appeal bond or its equivalent, and (ii) for purposes of
Section 13(d) only, Expenses incurred by Indemnitee in connection with the interpretation, enforcement or defense of
Indemnitee's rights under this Agreement, by litigation or otherwise. Expenses, however, shall not include amounts paid in settlement
by Indemnitee or the amount of judgments or fines against Indemnitee.

 

(e)          “Independent
Counsel” means a law firm, or a member of a law firm, that is experienced in matters of corporation law and neither presently
is, nor in the past five years has been, retained to represent: (i) the Company or Indemnitee in any matter material to either
such party (other than with respect to matters concerning the Indemnitee under this Agreement, or of other indemnitees under similar
indemnification agreements), or (ii) any other party to the Proceeding giving rise to a claim for indemnification hereunder.
Notwithstanding the foregoing, the term “Independent Counsel” shall not include any person who, under the applicable
standards of professional conduct then prevailing, would have a conflict of interest in representing either the Company or Indemnitee
in an action to determine Indemnitee's rights under this Agreement. The Company agrees to pay the reasonable fees and expenses
of the Independent Counsel referred to above and to fully indemnify such counsel against any and all Expenses, claims, liabilities
and damages arising out of or relating to this Agreement or its engagement pursuant hereto.

 

(f)          “Proceeding”
shall include any threatened, pending or completed action, suit, arbitration, alternate dispute resolution mechanism, investigation,
inquiry, administrative hearing or any other actual, threatened or completed proceeding, whether brought in the right of the Company
or otherwise and whether of a civil, criminal, administrative legislative, or investigative nature, including any appeal therefrom,
in which Indemnitee was, is or will be involved as a party, potential party, non-party witness or otherwise by reason of the fact
that Indemnitee is or was a director or officer of the Company, by reason of any action taken by him or of any action on his part
while acting as director or officer of the Company, or by reason of the fact that he is or was serving at the request of the Company
as a director, officer, employee or agent of another corporation, limited liability company, partnership, joint venture, trust
or other enterprise, in each case whether or not serving in such capacity at the time any liability or expense is incurred for
which indemnification, reimbursement, or advancement of expenses can be provided under this Agreement; except one initiated by
an Indemnitee to enforce his rights under this Agreement.

 

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Section 3.             Indemnity
in Third-Party Proceedings. The Company shall indemnify Indemnitee in accordance with the provisions of this Section 3
if Indemnitee is, or is threatened to be made, a party to or a participant in any Proceeding, other than a Proceeding by or in
the right of the Company to procure a judgment in its favor. Pursuant to this Section 3, Indemnitee shall be indemnified
to the fullest extent permitted by applicable law against all Expenses, judgments, fines and amounts paid in settlement actually
and reasonably incurred by Indemnitee or on his behalf in connection with such Proceeding or any claim, issue or matter therein,
if Indemnitee acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the Company
and, in the case of a criminal proceeding had no reasonable cause to believe that his conduct was unlawful.

 

Section 4.             Indemnity
in Proceedings by or in the Right of the Company. The Company shall indemnify Indemnitee in accordance with the provisions
of this Section 4 if Indemnitee is, or is threatened to be made, a party to or a participant in any Proceeding by or in the
right of the Company to procure a judgment in its favor. Pursuant to this Section 4, Indemnitee shall be indemnified
to the fullest extent permitted by applicable law against all Expenses actually and reasonably incurred by him or on his behalf
in connection with such Proceeding or any claim, issue or matter therein, if Indemnitee acted in good faith and in a manner he
reasonably believed to be in or not opposed to the best interests of the Company. No indemnification for Expenses shall be made
under this Section 4 in respect of any claim, issue or matter as to which Indemnitee shall have been finally adjudged by a
court to be liable to the Company, unless and only to the extent that the Delaware Court of Chancery or any court in which the
Proceeding was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances
of the case, Indemnitee is fairly and reasonably entitled to indemnification.

 

Section 5.             Indemnification
for Expenses of a Party Who is Wholly or Partly Successful. Notwithstanding any other provisions of this Agreement, to the
fullest extent permitted by applicable law and to the extent that Indemnitee is a party to (or a participant in) and is successful,
on the merits or otherwise, in any Proceeding or in defense of any claim, issue or matter therein, in whole or in part, the Company
shall indemnify Indemnitee against all Expenses actually and reasonably incurred by him in connection therewith. If Indemnitee
is not wholly successful in such Proceeding but is successful, on the merits or otherwise, as to one or more but less than all
claims, issues or matters in such Proceeding, the Company shall indemnify Indemnitee against all Expenses actually and reasonably
incurred by him or on his behalf in connection with each successfully resolved claim, issue or matter. If the Indemnitee is not
wholly successful in such Proceeding, the Company also shall indemnify Indemnitee against all Expenses reasonably incurred in connection
with a claim, issue or matter related to any claim, issue, or matter on which the Indemnitee was successful. For purposes of this
Section and without limiting the foregoing, if any Proceeding is disposed of, on the merits or otherwise (including a disposition
without prejudice), without (i) the disposition being adverse to Indemnitee, (ii) an adjudication that Indemnitee was
liable to the Company, (iii) a plea of guilty or nolo contendere by Indemnitee, (iv) an adjudication that Indemnitee
did not act in good faith and in a manner Indemnitee reasonably believed to be in or not opposed to the best interests of the Company
and (v) with respect to any criminal proceeding, an adjudication that Indemnitee had reasonable cause to believe Indemnitee’s
conduct was unlawful, Indemnitee shall be considered for purposes of this Agreement to have been successful with respect thereto.

 

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Section 6.             Indemnification
For Expenses of a Witness. Notwithstanding any other provision of this Agreement, to the fullest extent permitted by applicable
law and to the extent that Indemnitee is, by reason of his Corporate Status, a witness or otherwise participates in any Proceeding
to which Indemnitee is not a party, he shall be indemnified against all Expenses actually and reasonably incurred by him or on
his behalf in connection therewith.

 

Section 7.             Additional
Indemnification.

 

(a)          Notwithstanding
any limitation in Sections 3, 4, or 5, the Company shall indemnify Indemnitee to the fullest extent permitted by applicable law
if Indemnitee is a party to or threatened to be made a party to any Proceeding (including a Proceeding by or in the right of the
Company to procure a judgment in its favor) against all Expenses, judgments, fines and amounts paid in settlement actually and
reasonably incurred by Indemnitee in connection with the Proceeding.

 

(b)          For
purposes of Section 7(a), the meaning of the phrase “to the fullest extent permitted by applicable law” shall
include, but not be limited to:

 

i.          to
the fullest extent permitted by the provision of the DGCL that authorizes or contemplates additional indemnification by agreement,
or the corresponding provision of any amendment to or replacement of the DGCL, and

 

ii.         to
the fullest extent authorized or permitted by any amendments to or replacements of the DGCL adopted after the date of this Agreement
that increase the extent to which a corporation may indemnify its officers and directors.

 

Section 8.             Exclusions.
Notwithstanding any provision in this Agreement, the Company shall not be obligated under this Agreement to make any indemnity
in connection with any claim made against Indemnitee:

 

(a)          for
which payment has actually been made to or on behalf of Indemnitee under any insurance policy or other indemnity provision, except
with respect to any excess beyond the amount paid under any insurance policy or other indemnity provision; or

 

(b)          for
any Proceedings with respect to which final judgment is rendered against Indemnitee for payment of (i) an accounting of profits
made from the purchase and sale (or sale and purchase) by Indemnitee of securities of the Company within the meaning of Section 16(b) of
the Exchange Act (as defined in Section 2(a) hereof) or similar provisions of state statutory law or common law, or (ii) any
reimbursement of the Company by the Indemnitee of any bonus or other incentive-based or equity-based compensation or of any profits
realized by the Indemnitee from the sale of securities of the Company, as required in each case under the Exchange Act (including
any such reimbursements that arise from an accounting restatement of the Company pursuant to Section 304 of the Sarbanes-Oxley
Act of 2002 (the “Sarbanes-Oxley Act”), or the payment to the Company of profits arising from the purchase and sale
by Indemnitee of securities in violation of Section 306 of the Sarbanes-Oxley Act), or

 

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(c)          any
Proceeding involving the enforcement of non-compete and/or non-disclosure agreements or the non-compete and/or non-disclosure provisions
of employment, consulting or similar agreements the Indemnitee may be a party to with the Company or any subsidiary of the Company
or any other applicable foreign or domestic corporation, partnership, joint venture, trust or other enterprise, if any; or

 

(d)          except
as provided in Section 13(d) of this Agreement, in connection with any Proceeding (or any part of any Proceeding) initiated
by Indemnitee, including any Proceeding (or any part of any Proceeding) initiated by Indemnitee against the Company or its directors,
officers, employees or other indemnitees, unless (i) the Board authorized the Proceeding (or any part of any Proceeding) prior
to its initiation or (ii) the Company provides the indemnification, in its sole discretion, pursuant to the powers vested
in the Company under applicable law.

 

Section 9.             Advances
of Expenses. The Company shall advance, to the extent not prohibited by law, the Expenses incurred by Indemnitee in connection
with any Proceeding, and such advancement shall be made within thirty (30) days after receipt by the Corporation of (i) a
statement or statements from Indemnitee requesting such advance or advances from time to time, whether prior to or after final
disposition of any Proceeding, and (ii) an undertaking by or on behalf of Indemnitee to repay such amount or amounts, only
if, and to the extent that, it shall ultimately be determined that Indemnitee is not entitled to be indemnified by the Corporation
as authorized by this Agreement or otherwise. Such undertaking shall be accepted without reference to the financial ability of
Indemnitee to make such repayment. Advances shall be unsecured and interest free. Advances shall include any and all reasonable
Expenses incurred pursuing an action to enforce this right of advancement, including Expenses incurred preparing and forwarding
statements to the Company to support the advances claimed. This Section 9 shall not apply to any claim made by Indemnitee
for which indemnity is excluded pursuant to Section 8 or to any Proceeding for which the Company has assumed the defense thereof
in accordance with Section 10(b) of this Agreement.

 

Section 10.            Procedure
for Notification and Defense of Claim.

 

(a)          Indemnitee
shall notify the Company in writing of any matter with respect to which Indemnitee intends to seek indemnification or advancement
of Expenses hereunder as soon as reasonably practicable following the receipt by Indemnitee of written notice thereof. The written
notification to the Company shall include a description of the nature of the Proceeding and the facts underlying the Proceeding.
To obtain indemnification under this Agreement, Indemnitee shall submit to the Company a written request, including therein
or therewith such documentation and information as is reasonably available to Indemnitee and is reasonably necessary to determine
whether and to what extent Indemnitee is entitled to indemnification following the final disposition of such action, suit or proceeding.
The omission by Indemnitee to notify the Company hereunder will not relieve the Company from any liability which it may have to
Indemnitee hereunder or otherwise than under this Agreement, and any delay in so notifying the Company shall not constitute a waiver
by Indemnitee of any rights under this Agreement. The Secretary of the Company shall, promptly upon receipt of such a request for
indemnification, advise the Board in writing that Indemnitee has requested indemnification.

 

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(b)          In
the event the Company shall be obligated to pay the Expenses of Indemnitee with respect to a Proceeding, as provided in this Agreement,
the Company shall be entitled to assume the defense of such Proceeding, with counsel reasonably acceptable to Indemnitee, upon
delivery of written notice of its election to do so. After delivery of such notice, approval of such counsel by Indemnitee and
retention of such counsel by the Company, the Company will not be liable to Indemnitee under this Agreement for any fees of counsel
subsequently incurred by Indemnitee with respect to the same Proceeding, provided that (1) Indemnitee shall have the right
to employ Indemnitee’s own counsel in such Proceeding at Indemnitee’s expense and (2) if (i) the employment
of counsel by Indemnitee has been previously authorized in writing by the Company, (ii) counsel to the Company or Indemnitee
shall have reasonably concluded that there may be a conflict of interest or position, or reasonably believes that a conflict is
likely to arise, on any significant issue between the Company and the Indemnitee in the conduct of such defense or (iii) the
Company shall not, in fact, have employed counsel to assume the defense of such Proceeding, then the fees and expenses of Indemnitee’s
counsel shall be at the expense of the Company, except as otherwise expressly provided by this Agreement.

 

(c)          The
Company will be entitled to participate in the Proceeding at its own expense.

 

Section 11.           Procedure
Upon Application for Indemnification.

 

(a)          Upon
written request by Indemnitee for indemnification pursuant to Section 10(a), a determination, if required by applicable law,
with respect to Indemnitee's entitlement thereto shall be made in the specific case: (i) if a Change in Control shall have
occurred after the date of this Agreement, by Independent Counsel in a written opinion to the Board, a copy of which shall be delivered
to Indemnitee; or (ii) if a Change in Control shall not have occurred after the date of this Agreement, (A) by a majority
vote of the Disinterested Directors, even though less than a quorum of the Board, (B) by a committee of Disinterested Directors
designated by a majority vote of the Disinterested Directors, even though less than a quorum of the Board, (C) if there are
no such Disinterested Directors or, if such Disinterested Directors so direct, by Independent Counsel in a written opinion to the
Board, a copy of which shall be delivered to Indemnitee or (D) if so directed by the Disinterested Directors, by the stockholders
of the Company; and, if it is so determined that Indemnitee is entitled to indemnification, payment to Indemnitee shall be made
within ten (10) days after such determination. Indemnitee shall cooperate with the person, persons or entity making such determination
with respect to Indemnitee's entitlement to indemnification, including providing to such person, persons or entity upon reasonable
advance request any documentation or information which is not privileged or otherwise protected from disclosure and which is reasonably
available to Indemnitee and reasonably necessary to such determination. Any costs or Expenses (including attorneys' fees and disbursements)
incurred by Indemnitee in so cooperating with the person, persons or entity making such determination shall be borne by the Company
(irrespective of the determination as to Indemnitee's entitlement to indemnification) and the Company hereby indemnifies and agrees
to hold Indemnitee harmless therefrom.

 

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(b)          In
the event the determination of entitlement to indemnification is to be made by Independent Counsel pursuant to Section 11(a) hereof,
the Independent Counsel shall be selected as provided in this Section 11(b). If a Change in Control shall not have occurred
after the date of this Agreement, the Independent Counsel shall be selected by the Board, and the Company shall give written notice
to Indemnitee advising him of the identity of the Independent Counsel so selected. If a Change in Control shall have occurred after
the date of this Agreement, the Independent Counsel shall be selected by Indemnitee (unless Indemnitee shall request that such
selection be made by the Board, in which event the preceding sentence shall apply), and Indemnitee shall give written notice to
the Company advising it of the identity of the Independent Counsel so selected. In either event, Indemnitee or the Company,
as the case may be, may, within ten (10) days after such written notice of selection shall have been given, deliver to the
Company or to Indemnitee, as the case may be, a written objection to such selection; provided, however, that such
objection may be asserted only on the ground that the Independent Counsel so selected does not meet the requirements of “Independent
Counsel” as defined in Section 2 of this Agreement, and the objection shall set forth with particularity the factual
basis of such assertion. Absent a proper and timely objection, the person so selected shall act as Independent Counsel. If such
written objection is so made and substantiated, the Independent Counsel so selected may not serve as Independent Counsel unless
and until such objection is withdrawn or a court has determined that such objection is without merit. If, within twenty (20) days
after the submission by Indemnitee or the Company, as the case may be, of a written objection, no Independent Counsel shall have
been selected and not objected to, either the Company or Indemnitee may petition a court of competent jurisdiction for resolution
of any objection which shall have been made by the Company or Indemnitee to the other's selection of Independent Counsel and/or
for the appointment as Independent Counsel of a person selected by the Court or by such other person as the Court shall designate,
and the person with respect to whom all objections are so resolved or the person so appointed shall act as Independent Counsel
under Section 11(a) hereof. Upon the due commencement of any judicial proceeding or arbitration pursuant to Section 13(a) of
this Agreement, Independent Counsel shall be discharged and relieved of any further responsibility in such capacity (subject
to the applicable standards of professional conduct then prevailing).

 

Section 12.           Presumptions
and Effect of Certain Proceedings.

 

(a)          In
making a determination with respect to entitlement to indemnification hereunder, the person or persons or entity making such determination
shall, to the fullest extent not prohibited by law, presume that Indemnitee is entitled to indemnification under this Agreement
if Indemnitee has submitted a request for indemnification in accordance with Section 10(a) of this Agreement, and the
Company shall, to the fullest extent not prohibited by law, have the burden of proof to overcome that presumption in connection
with the making by any person, persons or entity of any determination contrary to that presumption. Neither the failure of the
Company (including by its directors or independent legal counsel) to have made a determination prior to the commencement of any
action pursuant to this Agreement that indemnification is proper in the circumstances because Indemnitee has met the applicable
standard of conduct, nor an actual determination by the Company (including by its directors or independent legal counsel) that
Indemnitee has not met such applicable standard of conduct, shall be a defense to the action or create a presumption that Indemnitee
has not met the applicable standard of conduct.

 

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(b)          Subject
to Section 13(e), if the person, persons or entity empowered or selected under Section 11 of this Agreement to determine
whether Indemnitee is entitled to indemnification shall not have made a determination within sixty (60) days after receipt by the
Company of the request therefor, the requisite determination of entitlement to indemnification shall, to the fullest extent not
prohibited by law, be deemed to have been made and Indemnitee shall be entitled to such indemnification, absent (i) a misstatement
by Indemnitee of a material fact, or an omission of a material fact necessary to make Indemnitee's statement not materially misleading,
in connection with the request for indemnification, or (ii) a prohibition of such indemnification under applicable law; provided,
however, that such 60-day period may be extended for a reasonable time, not to exceed an additional thirty (30) days, if the person,
persons or entity making the determination with respect to entitlement to indemnification in good faith requires such additional
time for the obtaining or evaluating of documentation and/or information relating thereto; and provided, further, that the foregoing
provisions of this Section 12(b) shall not apply (i) if the determination of entitlement to indemnification is to
be made by the stockholders pursuant to Section 11(a) of this Agreement and if (A) within fifteen (15) days after
receipt by the Company of the request for such determination the Board has resolved to submit such determination to the stockholders
for their consideration at an annual meeting thereof to be held within seventy-five (75) days after such receipt and such determination
is made thereat, or (B) a special meeting of stockholders is called within fifteen (15) days after such receipt for the purpose
of making such determination, such meeting is held for such purpose within sixty (60) days after having been so called and such
determination is made thereat, or (ii) if the determination of entitlement to indemnification is to be made by Independent
Counsel pursuant to Section 11(a) of this Agreement.

 

(c)          The
termination of any Proceeding or of any claim, issue or matter therein, by judgment, order, settlement or conviction, or upon a
plea of nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself
adversely affect the right of Indemnitee to indemnification or create a presumption that Indemnitee did not act in good faith and
in a manner which he reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal
Proceeding, that Indemnitee had reasonable cause to believe that his conduct was unlawful.

 

(d)          Reliance
as Safe Harbor. For purposes of any determination of good faith, Indemnitee shall be deemed to have acted in good faith
if Indemnitee's action is based on the records or books of account of the Company or other corporation, limited liability company,
partnership, joint venture, trust employee benefit plan or other enterprise of which Indemnitee was serving as a director, officer,
employee, agent or fiduciary, including financial statements, or on information supplied to Indemnitee by the officers of the Company
or other corporation, limited liability company, partnership, joint venture, trust employee benefit plan or other enterprise of
which Indemnitee was serving as a director, officer, employee, agent or fiduciary in the course of their duties, or on the advice
of legal counsel for the enterprise or on information or records given or reports made to the Company or other corporation, limited
liability company, partnership, joint venture, trust employee benefit plan or other enterprise of which Indemnitee was serving
as a director, officer, employee, agent or fiduciary by an independent certified public accountant or by an appraiser or other
expert selected with the reasonable care by the Company or other corporation, limited liability company, partnership, joint venture,
trust employee benefit plan or other enterprise of which Indemnitee was serving as a director, officer, employee, agent or fiduciary.
The provisions of this Section 12(d) shall not be deemed to be exclusive or to limit in any way the other circumstances
in which the Indemnitee may be deemed to have met the applicable standard of conduct set forth in this Agreement.

 

    -10-

     

    

 

(e)          Actions
of Others. The knowledge and/or actions, or failure to act, of any other director, officer, agent or employee of the Company
or other corporation, limited liability company, partnership, joint venture, trust employee benefit plan or other enterprise of
which Indemnitee was serving as a director, officer, employee, agent or fiduciary shall not be imputed to Indemnitee for purposes
of determining the right to indemnification under this Agreement.

 

Section 13.           Remedies
of Indemnitee.

 

(a)          Subject
to Section 13(e), in the event that (i) a determination is made pursuant to Section 11 of this Agreement that Indemnitee
is not entitled to indemnification under this Agreement, (ii) advancement of Expenses is not timely made pursuant to Section 9
of this Agreement, (iii) no determination of entitlement to indemnification shall have been made pursuant to Section 11(a) of
this Agreement within ninety (90) days after receipt by the Company of the request for indemnification, (iv) payment of indemnification
is not made pursuant to Section 5 or 6 or the last sentence of Section 11(a) of this Agreement within ten (10) days
after receipt by the Company of a written request therefor, (v) payment of indemnification pursuant to Section 3, 4 or
7 of this Agreement is not made within ten (10) days after a determination has been made that Indemnitee is entitled to indemnification,
or (vi) in the event that the Company or any other person takes or threatens to take any action to declare this Agreement
void or unenforceable, or institutes any litigation or other action or Proceeding designed to deny, or to recover from, the Indemnitee
the benefits provided or intended to be provided to the Indemnitee hereunder, Indemnitee shall be entitled to an adjudication
by a court of his entitlement to such indemnification or advancement of Expenses. Alternatively, Indemnitee, at his option,
may seek an award in arbitration to be conducted by a single arbitrator pursuant to the Commercial Arbitration Rules of the
American Arbitration Association. Indemnitee shall commence such proceeding seeking an adjudication or an award in arbitration
within 180 days following the date on which Indemnitee first has the right to commence such proceeding pursuant to this Section 13(a);
provided, however, that the foregoing clause shall not apply in respect of a proceeding brought by Indemnitee to
enforce his rights under Section 5 of this Agreement. The Company shall not oppose Indemnitee's right to seek any such adjudication
or award in arbitration.

 

(b)          In
the event that a determination shall have been made pursuant to Section 11(a) of this Agreement that Indemnitee is not
entitled to indemnification, any judicial proceeding or arbitration commenced pursuant to this Section 13 shall be conducted
in all respects as a de novo trial, or arbitration, on the merits and Indemnitee shall not be prejudiced by reason of that
adverse determination. In any judicial proceeding or arbitration commenced pursuant to this Section 13 the Company shall have
the burden of proving Indemnitee is not entitled to indemnification or advancement of Expenses, as the case may be.

 

(c)          If
a determination shall have been made pursuant to Section 11(a) of this Agreement that Indemnitee is entitled to indemnification,
the Company shall be bound by such determination in any judicial proceeding or arbitration commenced pursuant to this Section 13,
absent (i) a misstatement by Indemnitee of a material fact, or an omission of a material fact necessary to make Indemnitee's
statement not materially misleading, in connection with the request for indemnification, or (ii) a prohibition of such indemnification
under applicable law.

 

    -11-

     

    

 

(d)          The
Company shall, to the fullest extent not prohibited by law, be precluded from asserting in any judicial proceeding or arbitration
commenced pursuant to this Section 13 that the procedures and presumptions of this Agreement are not valid, binding and enforceable
and shall stipulate in any such court or before any such arbitrator that the Company is bound by all the provisions of this Agreement.
It is the intent of the Company that the Indemnitee not be required to incur legal fees or other Expenses associated with the interpretation,
enforcement or defense of Indemnitee's rights under this Agreement by litigation or otherwise because the cost and expense thereof
would substantially detract from the benefits intended to be extended to the Indemnitee hereunder. The Company shall indemnify
Indemnitee against any and all Expenses and, if requested by Indemnitee, shall (within ten (10) days after receipt by the
Company of a written request therefor) advance, to the extent not prohibited by law, such Expenses to Indemnitee, which are incurred
by Indemnitee in connection with any action brought by Indemnitee for indemnification or advance of Expenses from the Company under
this Agreement or under any directors' and officers' liability insurance policies maintained by the Company, regardless of whether
Indemnitee ultimately is determined to be entitled to such indemnification, advancement of Expenses or insurance recovery, as the
case may be.

 

(e)          Notwithstanding
anything in this Agreement to the contrary, no determination as to entitlement to indemnification under this Agreement shall be
required to be made prior to the final disposition of the Proceeding.

 

Section 14.           Non-exclusivity;
Survival of Rights; Insurance; Subrogation.

 

(a)          The
rights of indemnification and to receive advancement of Expenses as provided by this Agreement shall not be deemed exclusive of
any other rights to which Indemnitee may at any time be entitled under applicable law, the Company's Certificate of Incorporation,
the Company's By-laws, any agreement, a vote of stockholders or a resolution of directors, or otherwise. No amendment, alteration
or repeal of this Agreement or of any provision hereof shall limit or restrict any right of Indemnitee under this Agreement in
respect of any action taken or omitted by such Indemnitee in his Corporate Status prior to such amendment, alteration or repeal.
To the extent that a change in Delaware law, whether by statute or judicial decision, permits greater indemnification or advancement
of Expenses than would be afforded currently under the Company's Certificate of Incorporation, the Company’s By-laws and
this Agreement, it is the intent of the parties hereto that Indemnitee shall enjoy by this Agreement the greater benefits so afforded
by such change. No right or remedy herein conferred is intended to be exclusive of any other right or remedy, and every other right
and remedy shall be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at
law or in equity or otherwise. The assertion or employment of any right or remedy hereunder, or otherwise, shall not prevent the
concurrent assertion or employment of any other right or remedy.

 

    -12-

     

    

 

(b)          To
the extent that the Company maintains an insurance policy or policies providing liability insurance for directors, officers, employees,
or agents of the Company or of any other corporation, partnership, joint venture, trust, employee benefit plan or other enterprise
which such person serves at the request of the Company, Indemnitee shall be covered by such policy or policies in accordance
with its or their terms to the maximum extent of the coverage available for any such director, officer, employee or agent under
such policy or policies. If, at the time of the receipt of a notice of a claim pursuant to the terms hereof, the Company has director
and officer liability insurance in effect, the Company shall give prompt notice of the commencement of such proceeding to the insurers
in accordance with the procedures set forth in the respective policies. The Company and the Indemnitee shall thereafter take all
necessary or desirable action to cause such insurers to pay, on behalf of the Indemnitee, all amounts payable as a result of such
proceeding in accordance with the terms of such policies.

 

(c)          In
the event of any payment under this Agreement, the Company shall be subrogated to the extent of such payment to all of the rights
of recovery of Indemnitee with respect to any insurance policy, who shall execute all papers required and take all action necessary
to secure such rights, including execution of such documents as are necessary to enable the Company to bring suit to enforce such
rights.

 

(d)          The
Company shall not be liable under this Agreement to make any payment of amounts otherwise indemnifiable (or for which advancement
is provided hereunder) hereunder if and to the extent that Indemnitee has otherwise actually received such payment under any insurance
policy, contract, agreement or otherwise.

 

(e)          The
Company's obligation to indemnify or advance Expenses hereunder to Indemnitee who is or was serving at the request of the Company
as a director, officer, employee or agent of any other corporation, limited liability company, partnership, joint venture, trust,
employee benefit plan or other enterprise shall be reduced by any amount Indemnitee has actually received as indemnification or
advancement of Expenses from such other corporation, limited liability company, partnership, joint venture, trust, employee benefit
plan or other enterprise.

 

Section 15.           Severability.
If any provision or provisions of this Agreement shall be held to be invalid, illegal or unenforceable for any reason whatsoever:
(a) the validity, legality and enforceability of the remaining provisions of this Agreement (including without limitation,
each portion of any Section of this Agreement containing any such provision held to be invalid, illegal or unenforceable,
that is not itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby and shall remain enforceable
to the fullest extent permitted by law; (b) such provision or provisions shall be deemed reformed to the extent necessary
to conform to applicable law and to give the maximum effect to the intent of the parties hereto; and (c) to the fullest extent
possible, the provisions of this Agreement (including, without limitation, each portion of any Section of this Agreement containing
any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall be
construed so as to give effect to the intent manifested thereby.

 

Section 16.           Enforcement.
The Company expressly confirms and agrees that it has entered into this Agreement and assumed the obligations imposed on it hereby
in order to induce Indemnitee to serve as a director or officer of the Company, and the Company acknowledges that Indemnitee is
relying upon this Agreement in serving as a director or officer of the Company.

 

    -13-

     

    

 

Section 17.           Entire
Agreement. Supersedes Prior Agreements. This Agreement constitutes the entire agreement between the parties hereto with respect
to the subject matter hereof and supersedes all prior agreements and understandings, oral, written and implied, between the parties
hereto with respect to the subject matter hereof; provided, however, that this Agreement is a supplement to and in furtherance
of the Certificate of Incorporation of the Company and applicable law, and shall not be deemed a substitute therefor, nor to diminish
or abrogate any rights of Indemnitee thereunder.

 

Section 18.           Modification
and Waiver. No supplement, modification or amendment of this Agreement shall be binding unless executed in writing by the parties
thereto. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions
of this Agreement nor shall any waiver constitute a continuing waiver.

 

Section 19.           Notice
by Indemnitee. Indemnitee agrees promptly to notify the Company in writing upon being served with any summons, citation, subpoena,
complaint, indictment, information or other document relating to any Proceeding or matter which may be subject to indemnification
or advancement of Expenses covered hereunder. The failure of Indemnitee to so notify the Company shall not relieve the Company
of any obligation which it may have to the Indemnitee under this Agreement or otherwise except to the extent the Corporation is
prejudiced in its defense of such action, suit or proceeding as a result of such failure.

 

Section 20.           Notices.
All notices, requests, demands and other communications under this Agreement shall be in writing and shall be deemed to have been
duly given if (a) delivered by hand and receipted for by the party to whom said notice or other communication shall have been
directed, (b) mailed by certified or registered mail with postage prepaid, on the third business day after the date on which
it is so mailed, (c) mailed by reputable overnight courier and receipted for by the party to whom said notice or other communication
shall have been directed or (d) sent by facsimile transmission, with receipt of oral confirmation that such transmission has
been received:

 

(a)          If
to Indemnitee, at the address indicated on the signature page of this Agreement, or such other address as Indemnitee shall
provide to the Company.

 

(b)          If
to the Company to

 

PaxMedica, Inc.

50 Tice Blvd, Suite A26

 

Woodcliff Lake, NJ 07677

Attention: Executive Chairman of the Board

 

or to any other address as may have been furnished to Indemnitee
by the Company.

 

Section 21.          Contribution.
To the fullest extent permissible under applicable law, if the indemnification provided for in this Agreement is unavailable to
Indemnitee for any reason whatsoever, the Company, in lieu of indemnifying Indemnitee, shall contribute to the amount incurred
by Indemnitee, whether for judgments, fines, penalties, excise taxes, amounts paid or to be paid in settlement and/or for Expenses,
in connection with any claim relating to an indemnifiable event under this Agreement, in such proportion as is deemed fair and
reasonable in light of all of the circumstances of such Proceeding in order to reflect (i) the relative benefits received
by the Company and Indemnitee as a result of the event(s) and/or transaction(s) giving cause to such Proceeding; and/or
(ii) the relative fault of the Company (and its directors, officers, employees and agents) and Indemnitee in connection with
such event(s) and/or transaction(s).

 

    -14-

     

    

 

Section 22.           Applicable
Law and Consent to Jurisdiction. This Agreement and the legal relations among the parties shall be governed by, and construed
and enforced in accordance with, the laws of the State of Delaware, without regard to its conflict of laws rules. Except with respect
to any arbitration commenced by Indemnitee pursuant to Section 13(a) of this Agreement, the Company and Indemnitee hereby
irrevocably and unconditionally (i) agree that any action or proceeding arising out of or in connection with this Agreement
shall be brought only in the Chancery Court of the State of Delaware (the “Delaware Court”), and not in any other state
or federal court in the United States of America or any court in any other country, (ii) consent to submit to the exclusive
jurisdiction of the Delaware Court for purposes of any action or proceeding arising out of or in connection with this Agreement,
(iii) appoint, to the extent such party is not otherwise subject to service of process in the State of Delaware, irrevocably
Corporation Services Company as its agent in the State of Delaware as such party's agent for acceptance of legal process in connection
with any such action or proceeding against such party with the same legal force and validity as if served upon such party personally
within the State of Delaware, (iv) waive any objection to the laying of venue of any such action or proceeding in the Delaware
Court, and (v) waive, and agree not to plead or to make, any claim that any such action or proceeding brought in the Delaware
Court has been brought in an improper or inconvenient forum.

 

Section 23.           Identical
Counterparts. This Agreement may be executed in one or more counterparts, each of which shall for all purposes be deemed to
be an original but all of which together shall constitute one and the same Agreement. Only one such counterpart signed by the party
against whom enforceability is sought needs to be produced to evidence the existence of this Agreement.

 

Section 24.           Miscellaneous.
Use of the masculine pronoun shall be deemed to include usage of the feminine pronoun where appropriate. The headings of the paragraphs
of this Agreement are inserted for convenience only and shall not be deemed to constitute part of this Agreement or to affect the
construction thereof.

 

    -15-

     

    

 

IN WITNESS WHEREOF,
the parties have caused this Agreement to be signed as of the day and year first above written.

 

	PAXMEDICA, INC.	 
	 	 
	 	 
	By:  	                                    	 
	 	Name: Howard Weisman	 
	 	Title: CEO	 

 

	 	 
	INDEMNITEE	 
	 	 
	 	 
	 	 
	 	 
	Name:	                       	 
	 	 
	Address:	 

 

    -16-Exhibit 10.13

 

NEITHER THIS NOTE NOR THE SECURITIES
ISSUABLE UPON THE CONVERSION HEREOF HAVE BEEN REGISTERED UNDER THE UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), OR ANY STATE SECURITIES LAWS AND MAY NOT BE OFFERED, SOLD, PLEDGED, ASSIGNED, OR OTHERWISE TRANSFERRED UNLESS
(1) A REGISTRATION STATEMENT WITH RESPECT THERETO IS EFFECTIVE UNDER THE SECURITIES ACT AND ANY APPLICABLE STATE SECURITIES
LAWS OR (2) THE MAKER RECEIVES AN OPINION OF COUNSEL TO THE HOLDER OF THIS NOTE OR SUCH SECURITIES, WHICH COUNSEL AND OPINION
ARE REASONABLY SATISFACTORY TO THE MAKER, THAT THIS NOTE OR SUCH SECURITIES, AS APPLICABLE, MAY BE OFFERED, SOLD, PLEDGED,
ASSIGNED, OR OTHERWISE TRANSFERRED IN THE MANNER CONTEMPLATED WITHOUT AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OR APPLICABLE STATE SECURITIES LAWS.

 

8% CONVERTIBLE PROMISSORY NOTE

 

FOR VALUE RECEIVED,
PaxMedica, Inc., a Delaware corporation (the "Maker"), hereby promises to pay to _______________ or its successors,
assigns and legal representatives (the "Holder"), at _________________________, or at such other location as the Holder
may designate from time to time, the sum of ___________________Dollars (US$________________) (the “Principal Amount”)
in lawful money of the United States of America, together with interest thereon at a rate of eight percent (8%) per annum commencing
on the date of this Note and payable together with the Principal Amount on the Maturity Date (as defined herein) in accordance
with the provisions of this 8% Convertible Promissory Note (the “Note”).

 

This Note is one of
a series of 8% convertible notes of like tenor and ranking made by the Maker in favor of certain investors and issued, from time
to time (collectively, the “Notes”) pursuant to that certain Convertible Note Subscription Agreement by and between
the Maker and certain investors, including the Holder, of even date herewith, including all attachments, schedules and exhibits
thereto (the “Securities Purchase Agreement”). Capitalized terms used and not otherwise defied herein shall have the
meanings set forth in the Convertible Note Subscription Agreement.  Each of the Notes shall rank equally without preference
or priority of any kind over one another, and all payments on account of Principal Amount and interest with respect to any of the
Notes shall be applied ratably and proportionately on the outstanding Notes on the basis of the Principal Amount of the outstanding
indebtedness represented thereby.

 

1.           Seniority.     The
indebtedness evidenced by this Note and the payment of the Principal Amount and interest shall be Senior (as hereinafter
defined) to, and have priority in right of payment over, all indebtedness of Maker.  “Senior,” as used
herein, shall be deemed to mean that, in the event of any default in the payment of the obligations represented by this Note
(after giving effect to “cure” provisions, if any) or of any liquidation, insolvency, bankruptcy, reorganization
or similar proceedings relating to the Maker, all sums payable on this Note shall first be paid in full, with interest, if
any, before any payment is made upon any other indebtedness, now outstanding or hereinafter incurred, and, in any such event,
any payment or distribution of any character which shall be made in respect of any other indebtedness of Maker shall be paid
over to Holder for application to the payment hereof, unless and until the obligations under this Note (which shall mean the
Principal Amount, any accrued but unpaid interest and any costs and expenses payable under this Note) shall have been paid
and satisfied in full.

 

     

     

    

 

2.            Maturity
of the Note and Payment of Interest. This Note shall mature and the Principal Amount and
accrued but unpaid interest hereunder shall become due and payable twelve (12) months from the date hereof (the “Maturity
Date”). Interest shall accrue on the Principal Amount at a rate of eight percent (8%) per annum. Interest shall be computed
on the basis of a 365 day year for the actual number of days elapsed.

 

2.            Optional
Prepayment. The Maker may at any time hereafter, upon thirty (30) days prior written notice to the Holder, prepay without premium
or penalty, any portion or all of the outstanding principal amount of this Note, together with interest accrued on such prepaid
amount to the date of payment.

 

4.            Events
of Default. Each of the following shall constitute an “Event of Default” hereunder:

 

(a)          The
Maker's failure (i) to pay all or any part of the principal or interest hereunder when due and payable, or (ii) to cure
any noncompliance with any material agreement or covenant set forth herein within fifteen (15) days of the date on which the Maker
receives notice thereof, or (iii) to comply in any material respect with any law to which the Maker is subject;

 

(b)          The
Maker ceases operations;

 

(c)          The
Maker shall have applied for or consented to the appointment of a custodian, receiver, trustee or liquidator, or other
court-appointed fiduciary of all or a substantial part of its properties; or a custodian, receiver, trustee or liquidator or
other court appointed fiduciary shall have been appointed with or without the consent of the Maker; or the Maker is generally
not paying its debts as they become due by means of available assets or is insolvent, or has made a general assignment for
the benefit of creditors; or the Maker files a voluntary petition in bankruptcy, or a petition or an answer seeking
reorganization or an arrangement with creditors or seeking to take advantage of any insolvency law, or an answer admitting
the material allegations of a petition in any bankruptcy, reorganization or insolvency proceeding or has taken action for the
purpose of effecting any of the foregoing; or if, within sixty (60) days after the commencement of any proceeding against the
Maker seeking any reorganization, rehabilitation, arrangement, composition, readjustment, liquidation, dissolution or similar
relief under the Federal bankruptcy code or similar order under future similar legislation, the appointment of any trustee,
receiver, custodian, liquidator, or other court-appointed fiduciary of the Maker or of all or any substantial part of its
properties, such order or appointment shall not have been vacated or stayed on appeal or otherwise or if, within sixty (60)
days after the expiration of any such stay, such order or appointment shall not have been vacated;

 

    -2- 

     

    

 

(d)          The
Maker issues indebtedness senior in right of repayment, liquidation, or otherwise, to this Note;

 

(e)          The
Maker breaches or defaults on any financial instrument, security, loan or obligation to which it is a party.

 

Upon the occurrence
and during the continuance of an Event of Default, interest shall accrue on the Principal Amount and accrued but unpaid interest
hereunder at a rate of fifteen percent (15%) per annum, until such time as the Event of Default is cured or the Note is repaid.
Upon the occurrence of any Event of Default, the Holder may also pursue any available remedy, whether at law or in equity.

 

5.            Conversion.

 

(a)            Conversion
Upon Qualified Financing. If, prior to repayment or conversion of the Note, the Maker engages in a Qualified Financing (as
hereinafter defined), the outstanding principal amount of and all accrued but unpaid interest on this Note shall automatically
be converted, without any action of the Holder, at the time of the closing of the Qualified Financing into fully paid and non-assessable
shares of common stock, par value $0.0001 per share (the “Common Stock”), issued in such Qualified Financing at a conversion
price equal to seventy five percent (75%) of the price per share paid by the investors purchasing such capital stock in such Qualified
Financing (such shares issued upon conversion, “Conversion Shares”). “Qualified Financing” shall mean (i) a
reverse merger or similar transaction between the Maker and a corporation whose securities are publicly traded in the U.S., Canada
or other jurisdiction, or (ii) the closing of the initial public offering of the Maker’s capital stock (“IPO”).
If the Qualified Financing is an IPO, the Holder will not, directly or indirectly,
offer, sell, agree to offer or sell, solicit offers to purchase, grant any call option or purchase any put option with respect
to, hypothecate, pledge, borrow or otherwise dispose of or agree to dispose of, directly or indirectly, any Conversion Shares or
other shares of Common Stock beneficially owned by the Holder during the
one hundred eighty (180) days from the date of the final prospectus for the IPO.

 

(b)            Conversion
Upon Change of Control. If, prior to repayment or conversion of the Note, the Maker engages in a Change of Control (as
hereinafter defined), the outstanding principal amount of and all accrued but unpaid interest on this Note shall
automatically be converted, without any action of the Holder, at the time of the closing of the Change of Control into fully
paid and non-assessable shares of Common Stock at a conversion price equal to the quotient of the Principal Amount plus
accrued but unpaid interest outstanding immediately prior to the time of such Change of Control divided by a per share price
equal to seventy five percent (75%) of the price per share of the Common Stock set forth in the definitive
agreement(s) approved by the Maker in connection with such Change of Control. The Maker shall provide each Holder with
at least five (5) days prior written notice of the anticipated closing of a Change of Control. “Change of
Control” shall mean any of the following: (i) the sale or disposition of all or substantially all of the assets of
Maker to a third party; (ii) the acquisition by a third party of more than fifty percent (50%) of Maker’s
outstanding voting capital stock; or (iii) the merger or consolidation of Maker with or into another entity unless the
holders of Maker’s voting capital stock immediately prior to such merger or consolidation hold at least fifty percent
(50%) of the ownership of voting capital stock of the acquiring third party or the surviving entity in such merger or
consolidation, as the case may be, immediately after the merger or consolidation. Notwithstanding the foregoing, (x) a
Change of Control shall not be deemed to occur on account of a Qualified Financing; and (y) any transaction or series of
transactions principally for bona fide equity financing purposes shall not be deemed to be a Change of Control of Maker. In
the event the Change of Control is a transaction wholly for cash, the outstanding principal amount of and all accrued but
unpaid interest on this Note shall convert at per share price equal to 75% of the Enterprise Value (as defined herein) set
forth in the definitive agreement(s) approved by the Maker in connection with such Change of Control. “Enterprise
Value” shall mean the quotient of the total cash consideration received by the Maker in the Change of Control
transaction divided by the total shares of Common Stock outstanding immediately prior to the closing of the Change of Control
(on a fully diluted basis, including the Notes on an as converted basis).

 

    -3- 

     

    

 

(c)            Conversion
Procedures. On the date of conversion of this Note, the outstanding Principal Amount of and all accrued but unpaid interest
on this Note through the date of conversion shall be converted without any further action by the Holder and whether or not the
Note is surrendered to the Maker. The Maker shall not be obligated to issue certificates evidencing the Conversion Shares (as defined
in the Purchase Agreement) unless (a) this Note is delivered to the Maker or the Holder notifies the Maker that this Note
has been lost, stolen or destroyed and executes an agreement satisfactory to the Maker to indemnify the Maker from any loss incurred
by it in connection with this Note. The Maker shall, as soon as practicable thereafter, issue and deliver certificates representing
the number of Conversion Shares in accordance with the provisions hereof.

 

6.            Fees
and Expenses. Each party will be responsible for its own attorney’s fees and transaction expenses.

 

7.            Waiver
of Presentment, Demand and Dishonor. No delay on the part of the Holder in exercising any power or right hereunder shall
operate as a waiver of any such power or right; nor shall any single or partial exercise of any power or right preclude any
other or further exercise of such power or right, or the exercise of any other power or right, and no waiver whatsoever shall
be valid unless in writing, signed by the Holder, and then only to the extent expressly set forth therein; provided, that in
no event shall the Holder have any right to convert the Principal Amount and accrued interest under this Note at any time
after this Note has been prepaid by the Maker or at any time after the Maturity Date. No remedy is exclusive of any other
remedy and all remedies shall be cumulative to the maximum extent permitted by applicable law. The Maker hereby waives
presentment, demand for payment, diligence, notice of dishonor and all other notices or demands in connection with the
delivery, acceptance, performance, default or indorsement of this Note.

 

    -4- 

     

    

 

8.            Amendments
and Assignment. Any term of this Note may be amended, modified or waived (including, without limitation, any extension of
the Maturity Date) upon the written consent of the Maker and a Majority of Holders (as herein after defined); provided however,
that, any such amendment or waiver must apply to all outstanding Notes. No such waiver or consent in any one instance shall be
construed to be a continuing waiver or a waiver in any other instance unless it expressly so provides. The Maker shall promptly
notify all holders of the Notes of any such change or amendment. “Majority of Holders” as used herein, shall be deemed
to mean the holders of more than fifty percent (50%) of the outstanding aggregate Principal Amount of the Notes.

 

9.            Governing
Law; Consent to Jurisdiction. This Note shall be governed by, and construed in accordance with, the internal laws of the State
of Delaware, without reference to the choice of law provisions thereof. The Maker irrevocably submits to the exclusive jurisdiction
of the courts of the State of Delaware and the United States District Court for the District of Delaware for the purpose of any
suit, action, proceeding or judgment relating to or arising out of this Note and the transactions contemplated hereby. The Maker
irrevocably waives any objection to the laying of venue of any such suit, action or proceeding brought in such courts and irrevocably
waives any claim that any such suit, action or proceeding brought in any such court has been brought in an inconvenient forum.

 

10.          Usury.
This Note is hereby expressly limited so that in no event whatsoever shall the amount paid or agreed to be paid to the Holder hereunder
exceed that permissible under applicable law. If at any time the performance of any provision of this Note involves a payment exceeding
the limit that may be validly charged under applicable law, then the obligation to be performed shall be automatically reduced
to such limit.

 

11.          JURY
WAIVER. THE HOLDER AND THE MAKER EACH WAIVES ANY RIGHT TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION ARISING OUT OF THIS
NOTE OR ANY OF THE TRANSACTIONS CONTEMPLATED HEREIN.

 

[Rest of page intentionally left
blank]

 

    -5- 

     

    

 

SIGNATURES

 

	 	PAXMEDICA, INC.
	 	 
	 	By:	 
	 	Title:	 
	 	 
	Accepted and Agreed to:	 
	 	 
	 	HOLDER:
	 	 
	 	Print Name of Holder
	 	 
	 	By:	 
	 	 	Signature
	 	 	 
	 	 
	 	Print Name (if signing on behalf of entity)
	 	 
	 	 
	 	Title (if applicable)

 

[SIGNATURE PAGE
TO PAXMEDICA, INC. CONVERTIBLE PROMISSORY NOTE]

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