Exhibit 4.3


RESTATED CERTIFICATE
OF INCORPORATION


 


OF


 


RAPID MICRO BIOSYSTEMS,
INC.


 


The
name of the corporation is Rapid Micro Biosystems, Inc. The corporation was originally incorporated by the filing of its original Certificate
of Incorporation with the Secretary of State of the State of Delaware on December 29, 2006. This Restated Certificate of Incorporation
of the corporation, which restates and integrates and also further amends the provisions of the corporation’s Certificate of Incorporation,
was duly adopted in accordance with the provisions of Sections 242 and 245 of the General Corporation Law of the State of Delaware and
by the written consent of its stockholders in accordance with Section 228 of the General Corporation Law of the State of Delaware. The
Certificate of Incorporation of the corporation is hereby amended, integrated and restated to read in its entirety as follows:


 


FIRST: 
The name of the Corporation is Rapid Micro Biosystems, Inc. (the “Corporation”).


 


SECOND: 
The address of the Corporation’s registered office in the State of Delaware is 1209 Orange Street, in the City of Wilmington, County
of New Castle, Delaware 19801.  The name of its registered agent at that address is The Corporation Trust Company.


 


THIRD: 
The nature of the business or purposes to be conducted or promoted by the Corporation is to engage in any lawful act or activity for which
corporations may be organized under the General Corporation Law of the State of Delaware.


 


FOURTH: 
The total number of shares of all classes of stock which the Corporation shall have authority to issue is 230,000,000 shares, consisting
of (a) 220,000,000 shares of Common Stock, $0.01 par value per share (“Common Stock”), 210,000,000 of which shall be designated
Class A Common Stock, $0.01 par value per share (“Class A Common Stock”), and 10,000,000 of which shall be designated Class
B Common Stock, $0.01 par value per share (“Class B Common Stock”), and (b) 10,000,000 shares of Preferred Stock, $0.01 par
value per share (“Preferred Stock”).


 


The
following is a statement of the designations and the powers, privileges and rights, and the qualifications, limitations or restrictions
thereof in respect of each class of capital stock of the Corporation.


 


A.       COMMON
STOCK.


 


1.  
General.  The voting, dividend and liquidation rights of the holders of the Common Stock are subject to and qualified by the
rights of the holders of the Preferred Stock of any series as may be designated by the Board of Directors of the Corporation (the “Board
of Directors”) upon any issuance of the Preferred Stock of any series.


 






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2.  
Identical Rights.


 


    (a)    Except
as otherwise provided in this Restated Certificate of Incorporation or required by applicable law, shares of Common Stock shall have the
same rights and powers, rank equally (including as to dividends and distributions, and upon any liquidation, dissolution or winding up
of the Corporation), share ratably and be identical in all respects as to all matters.


 


    (b)    If
the Corporation in any manner subdivides (by stock split or otherwise) or combines (by reverse stock split or otherwise) the outstanding
shares of Class A Common Stock or Class B Common Stock, then the outstanding shares of all Common Stock will be subdivided or combined
in the same proportion and manner.


 


3.  Voting. 


 


    (a)    The
holders of Class A Common Stock shall have voting rights at all meetings of stockholders, each such holder being entitled to one vote
for each share thereof held by such holder; provided, however, that, except as otherwise required by law, holders of Class
A Common Stock shall not be entitled to vote on any amendment to this Restated Certificate of Incorporation (which, as used herein, shall
mean the certificate of incorporation of the Corporation, as amended from time to time, including the terms of any certificate of designations
of any series of Preferred Stock) that relates solely to the terms of one or more outstanding series of Preferred Stock if the holders
of such affected series are entitled, either separately or together as a class with the holders of one or more other such series, to vote
thereon pursuant to this Restated Certificate of Incorporation or the General Corporation Law of the State of Delaware.  There shall
be no cumulative voting. The number of authorized shares of Common Stock may be increased or decreased (but not below the number of shares
thereof then outstanding) by the affirmative vote of the holders of a majority of the stock of the Corporation entitled to vote, irrespective
of the provisions of Section 242(b)(2) of the General Corporation Law of the State of Delaware (the “DGCL”).


 


    (b)    Except
as otherwise provided herein or as otherwise required by the DGCL, the Class B Common Stock shall have no voting rights, and shall not
entitle the holders thereof to any vote at any meeting of stockholders, with respect to any matter, and the shares of Class B Common Stock
shall not be considered present or entitled to vote or otherwise accounted for in connection with any meeting or vote that occurs during
such time (including for purposes of determining the presence or absence of a quorum or the minimum vote required to approve any matter).
However, subject to the rights of the holders of any series of Preferred Stock pursuant to the terms of this Restated Certificate of Incorporation
or any resolution or resolutions providing for the issuance of such series of stock adopted by the Board of Directors, as long as any
shares of Class B Common Stock are outstanding, without the affirmative vote or written consent of the holders of a majority of the then
outstanding shares of the Class B Common Stock, the Corporation shall not, directly or indirectly, whether by or through any subsidiary
and whether by merger, consolidation or otherwise, amend, modify or repeal any provision of this Restated Certificate of Incorporation
if the effect thereof would be to modify the voting, conversion or other rights, powers, preferences, privileges or restrictions of the
Class B Common Stock.


 






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4. 
Dividends.  Dividends may be declared and paid on the Common Stock if, as and when determined by the Board of Directors subject
to any preferential dividend or other rights of any then outstanding Preferred Stock and to the requirements of applicable law. Without
limiting the preceding sentence, the Corporation shall not declare or pay any dividend or make any other distribution to the holders of
Common Stock unless the same dividend or distribution with the same record date and payment date shall be declared and paid on all shares
of Common Stock; provided, however, that any dividend or other distribution payable in additional shares of Common Stock
or rights to acquire shares of Common Stock shall be payable on the Class A Common Stock in additional shares of Class A Common Stock
or rights to acquire shares of Class A Common Stock and on the Class B Common Stock in additional shares of Class B Common Stock or rights
to acquire shares of Class B Common Stock, in each case, at the same rate and with the same record date and payment date.


 


5.  Liquidation. 
Upon the dissolution or liquidation of the Corporation, whether voluntary or involuntary, holders of Common Stock will be entitled to
receive all assets of the Corporation available for distribution to its stockholders, subject to any preferential or other rights of any
then outstanding Preferred Stock.


 


6.
Conversion of Class B Common Stock.


 


(a)    Conversion
at Option of Holder. Each share of Class B Common Stock shall be convertible, at any time and from time to time from and after the
date of issuance, at the option of the holder thereof, into one share of Class A Common Stock. A holder of Class B Common Stock shall
effect conversions by providing the Corporation with written notice that such holder elects to convert all or any number of the shares
of Class B Common Stock held by such holder (a “Class B Notice of Conversion”). The close of business on the date of receipt
by the transfer agent (or by the Corporation if the Corporation serves as its own transfer agent) of such Class B Notice of Conversion
shall be the time of conversion (the “Class B Conversion Time”) and the shares of Class A Common Stock issuable upon conversion
of such shares of Class B Common Stock shall be deemed to be outstanding of record as of such date. The Corporation shall, as soon as
practicable after the Class B Conversion Time, issue and deliver to such holder of Class B Common Stock, or to his, her or its nominees,
a book-entry statement evidencing the number of full shares of Class A Common Stock issuable upon such conversion in accordance with the
provisions hereof and a book-entry statement evidencing the number (if any) of the shares of Class B Common Stock that were not converted
into Class A Common Stock.


 






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(b)   Beneficial
Ownership Limitation. Notwithstanding anything herein to the contrary, but subject to the second to last sentence of this Subsection
6(b), the Corporation shall not effect any conversion of the Class B Common Stock, and a holder shall not have the right to convert any
portion of the Class B Common Stock, to the extent that, after giving effect to an attempted conversion set forth in the applicable Class
B Notice of Conversion, such holder together with any Person whose beneficial ownership of Class A Common Stock would be aggregated with
such holder’s for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)
and the applicable rules and regulations of the Securities and Exchange Commission (the “Commission”), including any “group”
of which the holder is a member, would beneficially own a number of shares of Class A Common Stock in excess of 4.9% of the total number
of shares of Class A Common Stock then issued and outstanding (the “Beneficial Ownership Limitation”); provided that the Beneficial
Ownership Limitation shall not apply to the extent that the Class A Common Stock is not deemed to constitute an “equity security”
pursuant to Rule 13d-1(i) under the Exchange Act. Delivery of a Class B Notice of Conversion by a holder in respect of the conversion
of Class B Common Stock shall constitute a representation by such holder that the issuance of shares of Class A Common Stock in accordance
with such Class B Notice of Conversion will not cause such holder (together with any Person whose beneficial ownership of Class A Common
Stock would be aggregated with such holder’s for purposes of Section 13(d) of the Exchange Act and the applicable regulations of
the Commission) to beneficially own a number of shares of Class A Common Stock in excess of the Beneficial Ownership Limitation, as determined
in accordance with this Restated Certificate of Incorporation. For purposes of this Subsection 6(b), the number of shares of Class A Common
Stock beneficially owned by such holder shall include the number of shares of Class A Common Stock issuable upon conversion of the Class
B Common Stock subject to the Class B Notice of Conversion with respect to which such determination is being made, but shall exclude the
number of shares of Class A Common Stock which are issuable upon (A) conversion of the remaining, unconverted Class B Common Stock beneficially
owned by such holder (and any Person whose beneficial ownership of Class A Common Stock would be aggregated with such holder’s for
purposes of Section 13(d) of the Exchange Act and the applicable regulations of the Commission), and (B) exercise, exchange or conversion
of the unexercised, unexchanged or unconverted portion of any other securities of the Corporation subject to a limitation on conversion,
exchange or exercise analogous to the limitation contained herein (including any class or series of preferred stock and warrants) beneficially
owned by such holder (and any Person whose beneficial ownership of Class A Common Stock would be aggregated with such holder’s for
purposes of Section 13(d) of the Exchange Act and the applicable regulations of the Commission). Except as set forth in the preceding
sentence, for purposes of this Subsection 6(b), beneficial ownership shall be calculated in accordance with Section 13(d) of the Exchange
Act and the rules and regulations promulgated thereunder. In addition, a determination as to any “group” status as contemplated
above shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder. For
purposes of this Subsection 6(b), in determining the number of outstanding shares of Class A Common Stock, a holder may rely on the number
of outstanding shares of Class A Common Stock as stated in the Corporation’s most recent quarterly or annual report filed with the
Commission, any current report or other filing filed by the Corporation with the Commission subsequent thereto or any confirmation provided
by the Corporation in accordance with the next sentence. Upon the written request of a holder (which may be via electronic mail), the
Corporation shall promptly following such request, confirm in writing via electronic mail to such holder the number of shares of Class
A Common Stock then outstanding. In any case, the number of outstanding shares of Class A Common Stock shall be determined after giving
effect to any actual conversion, exchange or exercise of securities of the Corporation, including Class B Common Stock, by such holder
(and any Person whose beneficial ownership of Class A Common Stock would be aggregated with such holder’s for purposes of Section
13(d) of the Exchange Act and the applicable regulations of the Commission) since the date as of which such number of outstanding shares
of Class A Common Stock was last publicly reported. Notwithstanding anything herein to the contrary, in the event of an error in the Class
B Notice of Conversion that would result in the holder beneficially owning shares of Class A Common Stock in excess of the Beneficial
Ownership Limitation, then such Class B Notice of Conversion shall only be effective with respect to that number of shares of Class A
Common Stock that would not result in the holder exceeding the Beneficial Ownership Limitation.


 






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(c)    Automatic
Conversion Upon Certain Transfers. Upon a transfer of shares of Class B Common Stock by a holder to a Person that is neither an Affiliate
of such holder nor a Person whose beneficial ownership of Class A Common Stock would be aggregated with such holder’s for purposes
of Section 13(d) of the Exchange Act and the applicable regulations of the Commission (a “Permitted Transferee”), each share
of Class B Common Stock so transferred shall automatically, without further action by the transferor or Permitted Transferee, convert
into a share of Class A Common Stock; and upon delivery to the Corporation of written notice from the transferor of any such transfer,
the Corporation shall issue and deliver the shares of Class A Common Stock into which such transferred shares of Class B Common Stock
shall have thereby converted, with the same effect as if such notice of transfer were a Class B Notice of Conversion delivered in accordance
with Subsection 6(a). For purposes of this Subsection 6(c), a transfer of Class B Common Stock shall be deemed to have occurred when the
Permitted Transferee has delivered the agreed consideration for such shares to the transferor. The written notice of transfer to be delivered
to the Corporation in accordance with this Subsection 6(c) shall be deemed a representation by the transferor that it has received such
consideration, and the Corporation shall be entitled to rely upon such representation.


 


(d)    Reservation
of Shares. The Corporation shall at all times when any shares of Class B Common Stock shall be outstanding, reserve and keep available
out of its authorized but unissued capital stock, for the purpose of effecting the conversion of Class B Common Stock, such number of
its duly authorized shares of Class A Common Stock as shall from time to time be sufficient to effect the conversion of all outstanding
Class B Common Stock; and if at any time the number of authorized but unissued shares of Class A Common Stock shall not be sufficient
to effect the conversion of all then outstanding shares of Class B Common Stock, the Corporation shall take such corporate action as may
be necessary to increase its authorized but unissued shares of Class A Common Stock to such number of shares as shall be sufficient for
such purposes, including, without limitation, engaging in best efforts to obtain the requisite stockholder approval of any necessary amendment
to this Restated Certificate of Incorporation.


 


(e)    Effect
of Conversion. All shares of Class B Common Stock which shall have been surrendered for conversion as herein provided shall no longer
be deemed to be outstanding and all rights with respect to such shares shall immediately cease and terminate on the Class B Conversion
Date, except only the right of the holders thereof to receive shares of Class A Common Stock in exchange therefor. Any shares of Class
B Common Stock so converted shall be retired and cancelled and may not be reissued, and the Corporation may thereafter take such appropriate
action (without the need for stockholder action) as may be necessary to reduce the authorized number of shares of Class B Common Stock
accordingly.


 


(f)    Taxes.
The Corporation shall pay any and all issue and other similar taxes that may be payable in respect of any issuance or delivery of shares
of Class A Common Stock upon conversion of shares of Class B Common Stock pursuant to this Section 6. The Corporation shall not, however,
be required to pay any tax which may be payable in respect of any transfer involved in the issuance and delivery of shares of Class A
Common Stock in a name other than that in which the shares of Class B Common Stock so converted were registered, and no such issuance
or delivery shall be made unless and until the person or entity requesting such issuance has paid to the Corporation the amount of any
such tax or has established, to the satisfaction of the Corporation, that such tax has been paid.


 






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(g)    Certain
Defined Terms. For the purposes of this Section 6, the following terms shall have the following meanings:


 


       (i)    “Affiliate”
means any Person that, directly or indirectly through one or more intermediaries, controls or is controlled by or is under common control
with a Person, as such terms are used in and construed under Rule 144. For this purpose, “control” (including, with its correlative
meanings, “controlled by” and “under common control with”) shall mean the possession, directly or indirectly,
of the power to direct or cause the direction of management or policies of a Person, whether through the ownership of securities or partnership
or other ownership interests, by contract or otherwise. With respect to a holder of capital stock, any investment fund or managed account
that is managed on a discretionary basis by the same investment manager as such holder will be deemed to be an Affiliate of such holder.


 


       (ii)    “Person”
means any individual, sole proprietorship, partnership (general or limited), limited liability company, joint venture, company, trust
(statutory or common law), unincorporated organization, association, corporation, institution, public benefit corporation, firm, joint
stock company, estate, entity or governmental or regulatory agency.


 


B.       PREFERRED
STOCK.


 


Preferred
Stock may be issued from time to time in one or more series, each of such series to have such terms as stated or expressed herein and
in the resolution or resolutions providing for the issue of such series adopted by the Board of Directors as hereinafter provided.


 


Authority
is hereby expressly granted to the Board of Directors from time to time to issue the Preferred Stock in one or more series, and in connection
with the creation of any such series, by adopting a resolution or resolutions providing for the issuance of the shares thereof and by
filing a certificate of designations relating thereto in accordance with the General Corporation Law of the State of Delaware, to determine
and fix the number of shares of such series and such voting powers, full or limited, or no voting powers, and such designations, preferences
and relative, participating, optional or other special rights, and qualifications, limitations or restrictions thereof, including without
limitation thereof, dividend rights, conversion rights, redemption privileges and liquidation preferences, as shall be stated and expressed
in such resolutions, all to the fullest extent now or hereafter permitted by the General Corporation Law of the State of Delaware. The
powers, preferences and relative, participating, optional and other special rights of each such series of Preferred Stock, and the qualifications,
limitations or restrictions thereof, if any, may differ from those of any and all other series at any time outstanding. Without limiting
the generality of the foregoing, the resolution or resolutions providing for the issuance of any series of Preferred Stock may provide
that such series shall be superior or rank equally or be junior to any other series of Preferred Stock to the extent permitted by law.


 






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Subject
to the rights of the holders of any series of Preferred Stock pursuant to the terms of this Restated Certificate of Incorporation or any
resolution or resolutions providing for the issuance of such series of stock adopted by the Board of Directors, the number of authorized
shares of Preferred Stock may be increased or decreased (but not below the number of shares thereof then outstanding) by the affirmative
vote of the holders of a majority of the stock of the Corporation entitled to vote, irrespective of the provisions of Section 242(b)(2)
of the General Corporation Law of the State of Delaware.


 


FIFTH: 
Except as otherwise provided herein, the Corporation reserves the right to amend, alter, change or repeal any provision contained in this
Restated Certificate of Incorporation, in the manner now or hereafter prescribed by statute and this Restated Certificate of Incorporation,
and all rights conferred upon stockholders, directors or any other persons herein are granted subject to this reservation.


 


SIXTH: 
In furtherance and not in limitation of the powers conferred upon it by the General Corporation Law of the State of Delaware, and subject
to the terms of any series of Preferred Stock, the Board of Directors shall have the power to adopt, amend, alter or repeal the Bylaws
of the Corporation.  The stockholders may not adopt, amend, alter or repeal the Bylaws of the Corporation, or adopt any provision
inconsistent therewith, unless such action is approved, in addition to any other vote required by this Restated Certificate of Incorporation,
by the affirmative vote of the holders of at least two-thirds in voting power of the outstanding shares of capital stock of the Corporation
entitled to vote thereon, voting together as a single class. In addition to any other vote required by this Restated Certificate of Incorporation
or the Bylaws of the Corporation or otherwise required by law, the affirmative vote of the holders of at least two-thirds in voting power
of the outstanding shares of capital stock of the Corporation entitled to vote thereon, voting together as a single class, shall be required
to amend or repeal, or to adopt any provision inconsistent with, whether by merger or consolidation or otherwise by operation of law,
this Article SIXTH.


 


SEVENTH: 
Except to the extent that the General Corporation Law of the State of Delaware prohibits the elimination or limitation of liability of
directors for breaches of fiduciary duty, no director of the Corporation shall be personally liable to the Corporation or its stockholders
for monetary damages for any breach of fiduciary duty as a director, notwithstanding any provision of law imposing such liability. 
No amendment to or repeal of this provision shall apply to or have any effect on the liability or alleged liability of any director of
the Corporation for or with respect to any acts or omissions of such director occurring prior to such amendment or repeal.  If the
General Corporation Law of the State of Delaware is amended to permit further elimination or limitation of the personal liability of directors,
then the liability of a director of the Corporation shall be eliminated or limited to the fullest extent permitted by the General Corporation
Law of the State of Delaware as so amended. 


 


EIGHTH: 
This Article EIGHTH is inserted for the management of the business and for the conduct of the affairs of the Corporation.


 


1. 
General Powers.  The business and affairs of the Corporation shall be managed by or under the direction of the Board of Directors.


 






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2.
Number of Directors; Election of Directors.  Subject to the rights of holders of any series of Preferred Stock to elect directors,
the number of directors of the Corporation shall be established from time to time by the Board of Directors.  Election of directors
need not be by written ballot, except as and to the extent provided in the Bylaws of the Corporation.


 


3.
Classes of Directors.  The directors (other than those directors elected by the holders of any series of Preferred Stock,
voting separately as a series or together with one or more other such series, as the case may be (the “Preferred Stock Directors”))
shall be and are divided into three classes, designated as Class I, Class II and Class III.  Each class shall consist, as nearly
as may be possible, of one-third of the total number of directors constituting the entire Board of Directors.  The Board of Directors
is authorized to assign members of the Board of Directors to Class I, Class II or Class III.


 


4. Terms
of Office.  Each director (other than Preferred Stock Directors) shall serve for a term ending on the date of the third annual
meeting of stockholders following the annual meeting of stockholders at which such director was elected; provided that each director
initially assigned to Class I shall serve for a term expiring at the Corporation’s first annual meeting of stockholders held after
the effectiveness of this Restated Certificate of Incorporation; each director initially assigned to Class II shall serve for a term
expiring at the Corporation’s second annual meeting of stockholders held after the effectiveness of this Restated Certificate of
Incorporation; and each director initially assigned to Class III shall serve for a term expiring at the Corporation’s third annual
meeting of stockholders held after the effectiveness of this Restated Certificate of Incorporation; provided further,
that the term of each director shall continue until the election and qualification of his or her successor and be subject to his or her
earlier death, resignation or removal.


 


5.
Quorum.  The greater of (a) a majority of the directors at any time in office and (b) one-third of the number of directors
fixed pursuant to Section 2 of this Article EIGHTH shall constitute a quorum of the Board of Directors.  If at any meeting of the
Board of Directors there shall be less than such a quorum, a majority of the directors present may adjourn the meeting from time to time
without further notice other than announcement at the meeting, until a quorum shall be present.


 


6.
Action at Meeting.  Every act or decision done or made by a majority of the directors present at a meeting duly held at which
a quorum is present shall be regarded as the act of the Board of Directors unless a greater number is required by law or by this Restated
Certificate of Incorporation.


 


7.
Removal.  Except for any Preferred Stock Directors, directors of the Corporation may be removed but only for cause and only
by the affirmative vote of the holders of at least two-thirds in voting power of the outstanding shares of capital stock of the Corporation
entitled to vote at an election of directors.


 


8.
Vacancies.  Subject to the rights of holders of any series of Preferred Stock in respect of any Preferred Stock Directors,
any vacancy or newly created directorship in the Board of Directors, however occurring, shall be filled only by vote of a majority of
the directors then in office, although less than a quorum, or by a sole remaining director and shall not be filled by the stockholders,
unless the Board of Directors determines by resolution that any such vacancy or newly created directorship shall be filled by the stockholders. 
A director elected to fill a vacancy or newly created directorship shall hold office until the next election of the class for which such
director shall have been chosen, subject to the election and qualification of a successor and to such director’s earlier death,
resignation or removal.


 






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9. 
Stockholder Nominations and Introduction of Business, Etc.  Advance notice of stockholder nominations for election of directors
and other business to be brought by stockholders before a meeting of stockholders shall be given in the manner provided by the Bylaws
of the Corporation.


 


10.
Preferred Stock Directors. During any period when the holders of one or more series of Preferred Stock have the right to elect
additional directors as provided for or fixed pursuant to the provisions of Article FOURTH hereof or any certificate of designations of
any series of Preferred Stock, then upon commencement and for the duration of the period during which such right continues: (i) the then
otherwise total number of authorized directors of the Corporation shall automatically be increased by such specified number of directors,
and the holders of such Preferred Stock shall be entitled to elect the additional directors so provided for or fixed pursuant to said
provisions, and (ii) each such additional director shall serve until such director’s successor shall have been duly elected and
qualified, or until such director’s right to hold such office terminates pursuant to said provisions, whichever occurs earlier,
subject to his or her earlier death, disqualification, resignation or removal. Except as otherwise provided for or fixed pursuant to the
provisions of Article FOURTH hereof or any certificate of designations of any series of Preferred Stock, whenever the holders of any series
of Preferred Stock having such right to elect additional directors are divested of such right pursuant to the provisions of such stock,
such person or persons then serving as additional directors shall cease to qualify to serve as directors and shall automatically cease
to be a director, the terms of office of all such additional directors elected by the holders of such stock, or elected to fill any vacancies
resulting from the death, resignation, disqualification or removal of such additional directors, shall forthwith terminate, and the total
authorized number of directors of the Corporation shall be reduced accordingly.


 


 11. 
Amendments to Article.  In addition to any other vote required by this Restated Certificate of Incorporation or the Bylaws
of the Corporation or otherwise required by law, the affirmative vote of the holders of at least two-thirds in voting power of the outstanding
shares of capital stock of the Corporation entitled to vote thereon, voting together as a single class, shall be required to amend or
repeal, or to adopt any provision inconsistent with, whether by merger or consolidation or otherwise by operation of law, this Article
EIGHTH.


 


NINTH: 
Except as otherwise provided in the terms of any series of Preferred Stock, no action that is required or permitted to be taken by the
stockholders of the Corporation at any annual or special meeting of stockholders may be effected by written consent of stockholders in
lieu of a meeting. In addition to any other vote required by this Restated Certificate of Incorporation or the Bylaws of the Corporation
or otherwise required by law, the affirmative vote of the holders of at least two-thirds in voting power of the outstanding shares of
capital stock of the Corporation entitled to vote thereon, voting together as a single class, shall be required to amend or repeal, or
to adopt any provision inconsistent with, whether by merger or consolidation or otherwise by operation of law, this Article NINTH.


 






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TENTH: 
Special meetings of stockholders for any purpose or purposes may be called at any time only by the Board of Directors, the chairperson
of the Board of Directors, the chief executive officer or the president (in the absence of a chief executive officer) of the Corporation,
and may not be called by any other person or persons.  Business transacted at any special meeting of stockholders shall be limited
to the purpose or purposes stated in the notice of meeting. In addition to any other vote required by this Restated Certificate of Incorporation
or the Bylaws of the Corporation or otherwise required by law, the affirmative vote of the holders of at least two-thirds in voting power
of the outstanding shares of capital stock of the Corporation entitled to vote thereon, voting together as a single class, shall be required
to amend or repeal, or to adopt any provision inconsistent with, whether by merger or consolidation or otherwise by operation of law,
this Article TENTH.


 


ELEVENTH:
Unless the Corporation consents in writing to the selection of an alternative forum, the Court of Chancery of the State of Delaware shall,
to the fullest extent permitted by law, be the sole and exclusive forum for (a) any derivative action or proceeding brought on behalf
of the Corporation, (b) any action asserting a claim of breach of fiduciary duty owed by any current or former director, officer, employee
or stockholder of the Corporation to the Corporation or the Corporation’s stockholders, (c) any action asserting a claim arising
pursuant to any provision of the General Corporation Law of the State of Delaware, this Restated Certificate of Incorporation or the Bylaws
of the Corporation or as to which the General Corporation Law of the State of Delaware confers jurisdiction on the Court of Chancery of
the State of Delaware or (d) any action asserting a claim governed by the internal affairs doctrine, in each case subject to said Court
of Chancery having personal jurisdiction over the indispensable parties named as defendants therein; provided that, the provisions
of this sentence will not apply to suits brought to enforce any liability or duty created by the Securities Act of 1933, as amended, or
the Securities Exchange Act of 1934, as amended, or any other claim for which the federal courts have exclusive jurisdiction; and provided
further that, if and only if the Court of Chancery of the State of Delaware dismisses any such action for lack of subject matter jurisdiction,
such action may be brought in another state or federal court sitting in the State of Delaware. Unless the Corporation consents in writing
to the selection of an alternative forum, the federal district courts of the United States of America shall, to the fullest extent permitted
by law, be the sole and exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act
of 1933, as amended. To the fullest extent permitted by applicable law, any person or entity purchasing or otherwise acquiring or holding
any interest in shares of capital stock of the Corporation shall be deemed to have notice of and consented to the provisions of this Article
ELEVENTH. In addition to any other vote required by this Restated Certificate of Incorporation or the Bylaws of the Corporation or otherwise
required by law, the affirmative vote of the holders of at least two-thirds in voting power of the outstanding shares of capital stock
of the Corporation entitled to vote thereon, voting together as a single class, shall be required to amend or repeal, or to adopt any
provision inconsistent with, whether by merger or consolidation or otherwise by operation of law, this Article ELEVENTH. If any provision
or provisions of this Article ELEVENTH shall be held to be invalid, illegal or unenforceable as applied to any person or entity or circumstance
for any reason whatsoever, then, to the fullest extent permitted by law, the validity, legality and enforceability of such provisions
in any other circumstance and of the remaining provisions of this Article ELEVENTH (including, without limitation, each portion of any
sentence of this Article ELEVENTH containing any such provision held to be invalid, illegal or unenforceable that is not itself held to
be invalid, illegal or unenforceable) and the application of such provision to other persons or entities and circumstances shall not in
any way be affected or impaired thereby. 


 






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IN
WITNESS WHEREOF, this Restated Certificate of Incorporation, which restates, integrates and amends the certificate of incorporation of
the Corporation, and which has been duly adopted in accordance with Sections 228, 242 and 245 of the General Corporation Law of the State
of Delaware, has been executed by its duly authorized officer this ___ day of ___________, 2021.


 


	 	
    RAPID MICRO BIOSYSTEMS, INC.

     

	 	 
	 	By:	 
	 	 	Name:	 Robert Spignesi
	 	 	Title:	President and Chief Executive Officer


 






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