Exhibit 10.1


 





INVESTMENT MANAGEMENT TRUST AGREEMENT


 


This Investment Management
Trust Agreement (this “Agreement”) is made effective as of          , 2021 by and between Mountain & Co. I Acquisition
Corp., a Cayman Islands exempted company (the “Company”), and Continental Stock Transfer & Trust Company,
a New York corporation (the “Trustee”).


 


WHEREAS, the
Company’s registration statement on Form S-1, File No. 333-259034 (the “Registration Statement”)
and prospectus (the “Prospectus”) for the initial public offering (the
 “Offering”) of the Company’s units (the “Units”), each of which consists
of one Class A ordinary share, par value $0.0001 per share (the “Ordinary Shares”), and one-half of one
redeemable warrant, has been declared effective as of the date hereof by the U.S. Securities and Exchange Commission;


 


WHEREAS, the Company has entered
into an Underwriting Agreement (the “Underwriting Agreement”) with Credit Suisse Securities (USA) LLC (the
 “Underwriter”) named therein;


 


WHEREAS,
as described in the Prospectus, $206,000,000 of the gross proceeds of the Offering and sale of the Private Placement Warrants (as
defined in the Underwriting Agreement) (or $236,900,000 if the Underwriter’s over-allotment option is exercised in full) and
the proceeds from any loans in connection with an Extension (as defined below), if any, will be delivered to the Trustee to be
deposited and held in a segregated trust account located at all times in the United States (the “Trust
Account”) for the benefit of the Company and the holders of the Ordinary Shares included in the Units issued in the
Offering as hereinafter provided (the amount to be delivered to the Trustee (and any interest subsequently earned thereon) is
referred to herein as the “Property,” the shareholders for whose benefit the Trustee shall hold the
Property will be referred to as the “Public Shareholders,” and the Public Shareholders and the Company
will be referred to together as the “Beneficiaries”); 


  


WHEREAS, if a Business
Combination (as defined herein) is not consummated within the initial 15 month period following the closing of the IPO, the Company
may extend such period by three months (the “Extension”), for up to a maximum of 18 months in the
aggregate, subject to the Company’s sponsor Mountain & Co. I Sponsor LLC (the “Sponsor”) or its
affiliates or permitted designees depositing $2,000,000 (or $2,300,000 if the underwriters’ over-allotment option is exercised
in full) into the Trust Account no later than the 15 month anniversary of the IPO (the “Deadline”), in
exchange for which the Sponsor will receive a non interest bearing, unsecured promissory note that will be repaid only if the
Company completes a Business Combination by the Deadline;


 


WHEREAS, pursuant to the Underwriting
Agreement, a portion of the Property equal to $7,000,000, or $8,050,000 if the Underwriter’s over-allotment option is exercised
in full, is attributable to deferred underwriting discounts and commissions that will be payable by the Company to the Underwriter upon
and concurrently with the consummation of the Business Combination (as defined below) (the “Deferred Discount”);
and


 


WHEREAS, the Company and the
Trustee desire to enter into this Agreement to set forth the terms and conditions pursuant to which the Trustee shall hold the Property.


 


NOW THEREFORE, IT IS AGREED:


 


1.            
Agreements and Covenants of Trustee. The Trustee hereby agrees and covenants to:


 


(a)        
Hold the Property in trust for the Beneficiaries in accordance with the terms of this Agreement in the Trust Account established
by the Trustee in the United States at J.P. Morgan Chase Bank, N.A. (or at another U.S. chartered commercial bank with consolidated assets
of $100 billion or more) and at a brokerage institution selected by the Trustee that is reasonably satisfactory to the Company;


 


(b)        
Manage, supervise and administer the Trust Account subject to the terms and conditions set forth herein;


 


(c)        
In a timely manner, upon the written instruction of the Company, invest and reinvest the Property solely in United States government
securities within the meaning of Section 2(a)(16) of the Investment Company Act of 1940, as amended, having a maturity of 185 days or
less, or in money market funds meeting the conditions of paragraphs (d)(1), (d)(2), (d)(3) and (d)(4) of Rule 2a-7 promulgated under the
Investment Company Act of 1940, as amended (or any successor rule), which invest only in direct U.S. government treasury obligations,
as determined by the Company; it being understood that the Trust Account will earn no interest while account funds are uninvested awaiting
the Company’s instructions hereunder; while account funds are invested or uninvested, the Trustee may earn bank credits or other
consideration;


 


(d)       
Collect and receive, when due, all interest or other income arising from the Property, which shall become part of the “Property,”
as such term is used herein; 


 



     


     


    




 


(e)       
 Promptly notify the Company and the Underwriter of all communications received by the Trustee with respect to any Property requiring
action by the Company;


 


(f)        
Supply any necessary information or documents as may be requested by the Company (or its authorized agents) in connection with
the Company’s preparation of the tax returns relating to  assets held in the Trust Account;


 


(g)       
Participate in any plan or proceeding for protecting or enforcing any right or interest arising from the Property if, as and when
instructed by the Company to do so;


 


(h)        
Render to the Company monthly written statements of the activities of, and amounts in, the Trust Account reflecting all receipts
and disbursements of the Trust Account;


 


(i)          Commence
liquidation of the Trust Account only after and promptly after (x) receipt of, and only in accordance with the terms of, a letter
from the Company (“Termination Letter”) in a form substantially similar to that attached hereto as either Exhibit
A or Exhibit B, as applicable, signed on behalf of the Company by its Chief Executive Officer, Chief Financial Officer,
President, Executive Vice President, Vice President, Secretary or Chairman of the board of directors of the Company (the
 “Board”) or other authorized officer of the Company, and, in the case of Exhibit A, acknowledged
and agreed to by the Underwriter, and complete the liquidation of the Trust Account and distribute the Property in the Trust
Account, including interest earned on the funds held in the Trust Account (less taxes payable and, in the case of Exhibit B,
less up to $100,000 of interest income to pay dissolution expenses), only as directed in the Termination Letter and the other
documents referred to therein, or (y) upon the date which is the latest of (1) 15 months after the closing of the Offering and (2)
such later date upon an Extension effectuated pursuant to the terms hereof if a Termination Letter has not been received by the
Trustee prior to such date, in which case the Trust Account shall be liquidated in accordance with the procedures set forth in the
Termination Letter attached as Exhibit B and the Property in the Trust Account, including interest earned on the funds held
in the Trust Account (less taxes payable and up to $100,000 of interest income to pay dissolution expenses), shall be distributed to
the Public Shareholders of record as of such date;


 


(j)         
Upon written request from the Company, which may be given from time to time in a form substantially similar to that attached hereto
as Exhibit C (a “Tax Payment Withdrawal Instruction”), withdraw from the Trust Account and distribute
to the Company the amount of interest earned on the Property requested by the Company to cover any tax obligation owed by the Company
as a result of assets of the Company or interest or other income earned on the Property, which amount shall be delivered directly to the
Company by electronic funds transfer or other method of prompt payment, and the Company shall forward such payment to the relevant taxing
authority so long as there is no reduction in the principal amount per share initially deposited in the Trust Account; provided,
however, that to the extent there is not sufficient cash in the Trust Account to pay such tax obligation, the Trustee shall liquidate
such assets held in the Trust Account as shall be designated by the Company in writing to make such distribution (it being acknowledged
and agreed that any such amount in excess of interest income earned on the Property shall not be payable from the Trust Account). The
written request of the Company referenced above shall constitute presumptive evidence that the Company is entitled to said funds, and
the Trustee shall have no responsibility to look beyond said request;


 


(k)        
Upon written request from the Company, which may be given from time to time in a form substantially similar to that attached hereto
as Exhibit D (a “Shareholder Redemption Withdrawal Instruction”), the Trustee shall distribute to the
Public Shareholders on behalf of the Company the amount requested by the Company to be used to redeem Ordinary Shares from Public Shareholders
properly submitted in connection with a shareholder vote to approve an amendment to the Company’s amended and restated memorandum
and articles of association (A) to modify the substance or timing of the Company’s obligation to allow redemption in connection
with its initial business combination or to redeem 100% of the Ordinary Shares included in the Units sold in the Offering (the “public
shares”) if the Company has not consummated an initial Business Combination within such time as is described in the Company’s
amended and restated memorandum and articles of association or (B) with respect to any other material provisions relating to shareholders’
rights or pre-initial Business Combination activity. The written request of the Company referenced above shall constitute presumptive
evidence that the Company is entitled to distribute said funds, and the Trustee shall have no responsibility to look beyond said request;
and


 


(l)         
Upon receipt of an extension letter (“Extension Letter”) substantially similar to Exhibit E hereto at least
five business days prior to the Deadline, signed on behalf of the Company by an executive officer, and receipt of the dollar amount specified
in the Extension Letter on or prior to the Deadline, follow the instructions set forth in the Extension Letter; 


 


(m)       
 Not make any withdrawals or distributions from the Trust Account other than pursuant to Section 1(i), (j) or (k)
above.


 






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2.            
Agreements and Covenants of the Company. The Company hereby agrees and covenants to:


 


(a)        
Give all instructions to the Trustee hereunder in writing, signed by the Company’s Chairman of the Board, Chief Executive
Officer, Chief Financial Officer, President, Executive Vice President, Vice President or Secretary. In addition, except with respect to
its duties under Sections 1(i), 1(j) and 1(k) hereof, the Trustee shall be entitled to rely on, and shall be protected
in relying on, any verbal or telephonic advice or instruction which it, in good faith and with reasonable care, believes to be given by
any one of the persons authorized above to give written instructions, provided that the Company shall promptly confirm such instructions
in writing;


 


(b)       
Subject to Section 4 hereof, hold the Trustee harmless and indemnify the Trustee from and against any and all expenses,
including reasonable counsel fees and disbursements, or losses suffered by the Trustee in connection with any action taken by it hereunder
and in connection with any action, suit or other proceeding brought against the Trustee involving any claim, or in connection with any
claim or demand, which in any way arises out of or relates to this Agreement, the services of the Trustee hereunder, or the Property or
any interest earned on the Property, except for expenses and losses resulting from the Trustee’s gross negligence, fraud or willful
misconduct. Promptly after the receipt by the Trustee of notice of demand or claim or the commencement of any action, suit or proceeding,
pursuant to which the Trustee intends to seek indemnification under this Section 2(b), it shall notify the Company in writing
of such claim (hereinafter referred to as the “Indemnified Claim”). The Trustee shall have the right to conduct
and manage the defense against such Indemnified Claim; provided that the Trustee shall obtain the consent of the Company
with respect to the selection of counsel, which consent shall not be unreasonably withheld. The Trustee may not agree to settle any Indemnified
Claim without the prior written consent of the Company, which such consent shall not be unreasonably withheld. The Company may participate
in such action with its own counsel;


 


(c)        
Pay the Trustee the fees set forth on Schedule A hereto, including an initial acceptance fee, annual administration fee,
and transaction processing fee which fees shall be subject to modification by the parties from time to time. It is expressly understood
that the Property shall not be used to pay such fees unless and until it is distributed to the Company pursuant to Sections 1(i)
through 1(j) hereof. The Company shall pay the Trustee the initial acceptance fee and the first annual administration fee at the
consummation of the Offering. The Company shall not be responsible for any other fees or charges of the Trustee except as set forth in
this Section 2(c), Schedule A and as may be provided in Section 2(b) hereof;


 


(d)       
In connection with any vote of the Company’s shareholders regarding a merger, share exchange, asset acquisition, share purchase,
reorganization or similar business combination involving the Company and one or more businesses (the “Business Combination”),
provide to the Trustee an affidavit or certificate of the inspector of elections for the shareholder meeting verifying the vote of such
shareholders regarding such Business Combination;


 


(e)        
Provide the Underwriter with a copy of any Termination Letter(s) and/or any other correspondence that is sent to the Trustee with
respect to any proposed withdrawal from the Trust Account promptly after it issues the same;


 


(f)        
Unless otherwise agreed between the Company and the Underwriter, ensure that any Instruction Letter (as defined in Exhibit A)
delivered in connection with a Termination Letter in the form of Exhibit A expressly provides that the Deferred Discount is paid
directly to the account or accounts directed by the Underwriter prior to any transfer of the funds held in the Trust Account to the Company
or any other person;


 


(g)        
Instruct the Trustee to make only those distributions that are permitted under this Agreement, and refrain from instructing the
Trustee to make any distributions that are not permitted under this Agreement; and


 


(h)       
 Within four (4) business days after the Underwriter exercises the over-allotment option (or any unexercised portion thereof) or
such over-allotment option expires, provide the Trustee with a notice in writing of the total amount of the Deferred Discount.


 






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3.            
Limitations of Liability. The Trustee shall have no responsibility or liability to:


 


(a)        
Imply obligations, perform duties, inquire or otherwise be subject to the provisions of any agreement or document other than
this Agreement and that which is expressly set forth herein;


 


(b)        
Take any action with respect to the Property, other than as directed in Section 1 hereof, and the Trustee shall have no
liability to any third party except for liability arising out of the Trustee’s gross negligence, fraud or willful misconduct;


 


(c)        
Institute any proceeding for the collection of any principal and income arising from, or institute, appear in or defend any proceeding
of any kind with respect to, any of the Property unless and until it shall have received instructions from the Company given as provided
herein to do so and the Company shall have advanced or guaranteed to it funds sufficient to pay any expenses incident thereto;


 


(d)        
Refund any depreciation in principal of any Property;


 


(e)        
Assume that the authority of any person designated by the Company to give instructions hereunder shall not be continuing unless
provided otherwise in such designation, or unless the Company shall have delivered a written revocation of such authority to the Trustee;


 


(f)         
The other parties hereto or to anyone else for any action taken or omitted by it, or any action suffered by it to be taken or omitted,
in good faith and in the Trustee’s best judgment, except for the Trustee’s gross negligence, fraud or willful misconduct.
The Trustee may rely conclusively and shall be protected in acting upon any order, notice, demand, certificate, opinion or advice of counsel
(including counsel chosen by the Trustee, which counsel may be the Company’s counsel), statement, instrument, report or other paper
or document (not only as to its due execution and the validity and effectiveness of its provisions, but also as to the truth and acceptability
of any information therein contained) which the Trustee believes, in good faith and with reasonable care, to be genuine and to be signed
or presented by the proper person or persons. The Trustee shall not be bound by any notice or demand, or any waiver, modification, termination
or rescission of this Agreement or any of the terms hereof, unless evidenced by a written instrument delivered to the Trustee, signed
by the proper party or parties and, if the duties or rights of the Trustee are affected, unless it shall give its prior written consent
thereto;


 


(g)        
Verify the accuracy of the information contained in the Registration Statement;


 


(h)        
Provide any assurance that any Business Combination entered into by the Company or any other action taken by the Company is as
contemplated by the Registration Statement;


 


(i)         
File information returns with respect to the Trust Account with any local, state or federal taxing authority or provide periodic
written statements to the Company documenting the taxes payable by the Company, if any, relating to any interest income earned on the
Property;


 


(j)         
Prepare, execute and file tax reports, income or other tax returns and pay any taxes with respect to any income generated by, and
activities relating to, the Trust Account, regardless of whether such tax is payable by the Trust Account or the Company, including, but
not limited to, tax obligations, except pursuant to Section 1(j) hereof; or


 


(k)        
Verify calculations, qualify or otherwise approve the Company’s written requests for distributions pursuant to Sections
1(i), 1(j) or 1(k) hereof.


 






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4.            
Trust Account Waiver. The Trustee has no right of set-off or any right, title, interest or claim of any kind (“Claim”)
to, or to any monies in, the Trust Account, and hereby irrevocably waives any Claim to, or to any monies in, the Trust Account that it
may have now or in the future. In the event the Trustee has any Claim against the Company under this Agreement, including, without limitation,
under Section 2(b) or Section 2(c) hereof, the Trustee shall pursue such Claim solely against the Company
and its assets outside the Trust Account and not against the Property or any monies in the Trust Account.


 


5.             
Termination. This Agreement shall terminate as follows:


 


(a)        
If the Trustee gives written notice to the Company that it desires to resign under this Agreement, the Company shall use its reasonable
efforts to locate a successor trustee, pending which the Trustee shall continue to act in accordance with this Agreement. At such time
that the Company notifies the Trustee that a successor trustee has been appointed and has agreed to become subject to the terms of this
Agreement, the Trustee shall transfer the management of the Trust Account to the successor trustee, including but not limited to the transfer
of copies of the reports and statements relating to the Trust Account, whereupon this Agreement shall terminate; provided, however,
that in the event that the Company does not locate a successor trustee within ninety (90) days of receipt of the resignation notice from
the Trustee, the Trustee may submit an application to have the Property deposited with any court in the State of New York or with the
United States District Court for the Southern District of New York and upon such deposit, the Trustee shall be immune from any liability
whatsoever; or


 


(b)        
At such time that the Trustee has completed the liquidation of the Trust Account and its obligations in accordance with the provisions
of Section 1(i) hereof and distributed the Property in accordance with the provisions of the Termination Letter, this Agreement
shall terminate except with respect to Section 2(b).


 


6.            
Miscellaneous.


 


(a)         
The Company and the Trustee each acknowledge that the Trustee will follow the security procedures set forth below with respect
to funds transferred from the Trust Account. The Company and the Trustee will each restrict access to confidential information relating
to such security procedures to authorized persons. Each party must notify the other party immediately if it has reason to believe unauthorized
persons may have obtained access to such confidential information, or of any change in its authorized personnel. In executing funds transfers,
the Trustee shall rely upon all information supplied to it by the Company, including, account names, account numbers, and all other identifying
information relating to a Beneficiary, Beneficiary’s bank or intermediary bank. Except for any liability arising out of the Trustee’s
gross negligence, fraud or willful misconduct, the Trustee shall not be liable for any loss, liability or expense resulting from any error
in the information or transmission of the funds.


 


(b)         
This Agreement shall be governed by and construed and enforced in accordance with the laws of the State of New York.


 


(c)          This
Agreement contains the entire agreement and understanding of the parties hereto with respect to the subject matter hereof. Except for Section
1(i), 1(j) and 1(k) hereof (which sections may not be modified, amended or deleted without the affirmative vote of
holders of sixty-five percent (65%) of the votes cast of the then outstanding Ordinary Shares and Class B ordinary shares, par value
$0.0001 per share, of the Company, voting together as a single class; provided that no such amendment will affect any Public Shareholder
who has properly elected to redeem his or her Ordinary Shares in connection with a shareholder vote to amend this Agreement (A) to modify
the substance or timing of the Company’s obligation to allow redemption in connection with its initial business combination or
to redeem 100% of the public shares if the Company does not complete its initial Business Combination within the time frame specified
in the Company’s amended and restated memorandum and articles of association or (B) with respect to any other material provisions
relating to shareholders’ rights or pre-initial Business Combination activity), this Agreement or any provision hereof may only
be changed, amended or modified (other than to correct a typographical error) by a writing signed by each of the parties hereto.


 


(d)         
The parties hereto consent to the jurisdiction and venue of any state or federal court located in the City of New York, State of
New York, for purposes of resolving any disputes hereunder. AS TO ANY CLAIM, CROSS-CLAIM OR COUNTERCLAIM IN ANY WAY RELATING TO THIS
AGREEMENT, EACH PARTY WAIVES THE RIGHT TO TRIAL BY JURY.


 






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(e)        
 Any notice, consent or request to be given in connection with any of the terms or provisions of this Agreement shall be in writing
and shall be sent by express mail or similar private courier service, by certified mail (return receipt requested), by hand delivery
or by electronic mail: 


 


	 	if to the Trustee, to:
	 	 
	 	Continental Stock Transfer & Trust Company
	 	1 State Street, 30th Floor
	 	New York, New York 10004
	 	Attn: Francis Wolf & Celeste Gonzalez
	 	
    Email: fwolf@continentalstock.com

    Email: cgonzalez@continentalstock.com

	 	 
	 	if to the Company, to:
	 	 
	 	
    Mountain & Co. I Acquisition Corp.

    4001 Kennett Pike, Suite 302

    Wilmington, Delaware 19807

	 	Attn: Dr. Cornelius Boersch
	 	 
	 	in each case, with copies to:
	 	 
	 	Davis Polk & Wardwell LLP
	 	450 Lexington Avenue
	 	New York, NY 10017
	 	Attn:   Leo Borchardt, Esq. 

            Deanna L. Kirkpatrick, Esq.
	 	Email: leo.borchardt@davispolk.com

               deanna.kirkpatrick@davispolk.com

                
	 	and
	 	 
	 	
    Credit Suisse Securities (USA) LLC

    Eleven Madison Avenue

    New York, New York 10010

    Attn: IB-Legal

    Fax: (212) 325-4296

	 	 
	 	and
	 	 
	 	
    Skadden, Arps, Slate, Meagher & Flom LLP

    525 University Avenue, Suite 1400

    Palo Alto, California 94301

    Attn: Gregg A. Noel, Esq.

    Email: gregg.noel@skadden.com

	 	 


(f)         
Each of the Company and the Trustee hereby represents that it has the full right and power and has been duly authorized to enter
into this Agreement and to perform its respective obligations as contemplated hereunder. The Trustee acknowledges and agrees that it shall
not make any claims or proceed against the Trust Account, including by way of set-off, and shall not be entitled to any funds in the Trust
Account under any circumstance.


 






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(g)         This
Agreement is the joint product of the Trustee and the Company and each provision hereof has been subject to the mutual consultation,
negotiation and agreement of such parties and shall not be construed for or against any party hereto.


 


(h)         This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts
shall together constitute one and the same instrument. Delivery of a signed counterpart of this Agreement by facsimile or electronic transmission
shall constitute valid and sufficient delivery thereof.


 


(i)           Each of the Company and the Trustee hereby acknowledges and agrees that the Underwriter is a third-party beneficiary of this Agreement.


 


(j)           Except
as specified herein, no party to this Agreement may assign its rights or delegate its obligations hereunder to any other person or entity.


 


[Signature Page Follows] 


 






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IN WITNESS WHEREOF,
the parties have duly executed this Investment Management Trust Agreement as of the date first written above.


 


	 	CONTINENTAL STOCK TRANSFER & TRUST COMPANY, as Trustee
	 	 
	 	By:	 
	 	 	Name: Francis Wolf
	 	 	Title:  Vice President
	 	 
	 	MOUNTAIN & CO. I ACQUISITION CORP.
	 	 
	 	By:	 
	 	 	Name: Dr. Cornelius Boersch 
	 	 	Title:   Chief Executive Officer 


 


[Signature Page to Investment Management Trust
Agreement]


 






     


     


    

 


SCHEDULE A


 


	Fee Item	 	Time and method of payment	 	Amount	 
	Initial set-up fee.	 	Initial closing of Offering by wire transfer.	 	$	3,500.00	 
	Trustee administration fee	 	Payable annually. First year fee payable, at initial closing of Offering by wire transfer, thereafter by wire transfer or check.	 	$	10,000.00	 
	Transaction processing fee for disbursements to Company under Section 1	 	Billed to Company following disbursement made to Company under Section 1	 	$	250.00	 
	Paying Agent services as required pursuant to Section 1(i) and 1(k)	 	Billed to Company upon delivery of service pursuant to Section 1(i) and 1(k)	 	 	Prevailing rates	 



 


 






     


     


    

 


EXHIBIT A


 


[Letterhead of Company]


 


[Insert date]


 


Continental Stock Transfer & Trust Company


1 State Street, 30th Floor


New York, New York 10004


Attn: Francis Wolf & Celeste Gonzalez


 


	 	Re:	Trust Account - Termination Letter


 


Dear Mr. Wolf and Ms. Gonzalez:


 


Pursuant to Section
1(i) of the Investment Management Trust Agreement between Mountain & Co. I Acquisition Corp. (the “Company”)
and Continental Stock Transfer & Trust Company (“Trustee”), dated as of          , 2021 (the “Trust Agreement”),
this is to advise you that the Company has entered into an agreement with ___________ (the “Target Business”)
to consummate a business combination with the Target Business (the “Business Combination”) on or about [insert
date]. The Company shall notify you at least seventy-two (72) hours in advance of the actual date (or such shorter period as you may
agree) of the consummation of the Business Combination (the “Consummation Date”). Capitalized
terms used but not defined herein shall have the meanings set forth in the Trust Agreement.


 


In accordance with the terms
of the Trust Agreement, we hereby authorize you to commence to liquidate all of the assets of the Trust Account, and to transfer the proceeds
to a segregated account held by you on behalf of the Beneficiaries to the effect that, on the Consummation Date, all of the funds held
in the Trust Account will be immediately available for transfer to the account or accounts that the Company shall direct on the Consummation
Date (including as directed to it by the Underwriter (with respect to the Deferred Discount)).


 


On the Consummation Date (i)
counsel for the Company shall deliver to you written notification that the Business Combination has been consummated, or will be consummated
substantially concurrently with your transfer of funds to the accounts as directed by the Company (the “Notification”),
and (ii) the Company shall deliver to you (a) a certificate of the Chief Executive Officer, Chief Financial Officer, Co-Executive Chairman
or Vice Chairman, which verifies that the Business Combination has been approved by a vote of the Company’s shareholders, if a vote
is held and (b) a joint written instruction signed by the Company and the Underwriter with respect to the transfer of the funds held in
the Trust Account, including payment of amounts owed to public shareholders who have properly exercised their redemption rights and payment
of the Deferred Discount directly to the account or accounts directed by the Underwriter from the Trust Account (the “Instruction
Letter”). You are hereby directed and authorized to transfer the funds held in the Trust Account immediately upon your receipt
of the Notification and the Instruction Letter, in accordance with the terms of the Instruction Letter. In the event that certain deposits
held in the Trust Account may not be liquidated by the Consummation Date without penalty, you will notify the Company in writing of the
same and the Company shall direct you as to whether such funds should remain in the Trust Account and be distributed after the Consummation
Date to the Company. Upon the distribution of all the funds, net of any payments necessary for reasonable unreimbursed expenses related
to liquidating the Trust Account, your obligations under the Trust Agreement shall be terminated.


 


In the event that the Business
Combination is not consummated on the Consummation Date described in the notice thereof and we have not notified you on or before the
original Consummation Date of a new Consummation Date, then upon receipt by the Trustee of written instructions from the Company, the
funds held in the Trust Account shall be reinvested as provided in Section 1(c) of the Trust Agreement on the business day immediately
following the Consummation Date as set forth in such notice as soon thereafter as possible.


 






     


     


    

 


	 	Very truly yours,
	 	 
	 	Mountain & Co. I Acquisition Corp.
	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:


 


	Agreed and acknowledged by:
	 
	Credit Suisse Securities (USA) LLC
	 
	By:	 	 
	 	Name:	 
	 	Title:	 



 






     


     


    

 


EXHIBIT B


 


[Letterhead of Company]


 


[Insert date]


 


Continental Stock Transfer & Trust Company


1 State Street, 30th Floor


New York, New York 10004


Attn: Francis Wolf & Celeste Gonzalez


 


	 	Re:	Trust Account  - Termination Letter


  


Dear Mr. Wolf and Ms. Gonzalez:


 


Pursuant to Section
1(i) of the Investment Management Trust Agreement between Mountain & Co. I Acquisition Corp. (the “Company”)
and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of          , 2021 (the “Trust
Agreement”), this is to advise you that the Company has been unable to effect a business combination with a Target Business
(the “Business Combination”) within the time frame specified in the Company’s Amended and Restated Memorandum
and Articles of Association, as described in the Company’s Prospectus relating to the Offering. Capitalized terms used but not defined
herein shall have the meanings set forth in the Trust Agreement.


 


In accordance with the terms
of the Trust Agreement, we hereby authorize you to liquidate all of the assets in the Trust Account and to transfer the total proceeds
into a segregated account held by you on behalf of the Beneficiaries to await distribution to the Public Shareholders. The Company has
selected __________1 as the effective date for the purpose
of determining when the Public Shareholders will be entitled to receive their share of the liquidation proceeds. You agree to be the Paying
Agent of record and, in your separate capacity as Paying Agent, agree to distribute said funds directly to the Company’s Public
Shareholders in accordance with the terms of the Trust Agreement and the Amended and Restated Memorandum and Articles of Association of
the Company. Upon the distribution of all the funds, net of any payments necessary for reasonable unreimbursed expenses related to liquidating
the Trust Account, your obligations under the Trust Agreement shall be terminated, except to the extent otherwise provided in Section
1(i) of the Trust Agreement.


 


	 	Very truly yours,
	 	 
	 	Mountain & Co. I Acquisition Corp.
	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:
	
    cc: Credit Suisse Securities (USA) LLC
	 


 


 






1 15 months from the closing of the Offering, or at a later date, if extended.


 






     


     


    

 


EXHIBIT C


 


[Letterhead of Company]


 


[Insert date]


 


Continental Stock Transfer & Trust Company


1 State Street, 30th Floor


New York, New York 10004


Attn: Francis Wolf & Celeste Gonzalez


 


	 	Re:	Trust Account  -Tax Payment Withdrawal Instruction


 


Dear Mr. Wolf and Ms. Gonzalez:


 


Pursuant to Section
1(j) of the Investment Management Trust Agreement between Mountain & Co. I Acquisition Corp. (the “Company”)
and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of           , 2021 (the “Trust
Agreement”), the Company hereby requests that you deliver to the Company $_______   of the interest
income earned on the Property as of the date hereof. Capitalized terms used but not defined herein shall have the meanings set forth in
the Trust Agreement.


 


The Company needs such funds
to pay for the tax obligations as set forth on the attached tax return or tax statement. In accordance with the terms of the Trust Agreement,
you are hereby directed and authorized to transfer (via wire transfer) such funds promptly upon your receipt of this letter to the Company’s
operating account at:


 


[WIRE INSTRUCTION INFORMATION]


 


	 	Very truly yours,
	 	 
	 	Mountain & Co. I Acquisition Corp.
	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:
	 	 
	cc:     Credit Suisse Securities (USA) LLC	 


 






     


     


    

 


EXHIBIT D


 


[Letterhead of Company]


 


[Insert date]


 


Continental Stock Transfer & Trust Company


1 State Street, 30th Floor


New York, New York 10004


Attn: Francis Wolf & Celeste Gonzalez


 


	 	Re:	Trust Account  - Shareholder Redemption Withdrawal Instruction


 


Dear Mr. Wolf and Ms. Gonzalez:


 


Pursuant to Section
1(k) of the Investment Management Trust Agreement between Mountain & Co. I Acquisition
Corp. (the “Company”) and Continental Stock Transfer & Trust Company
(the “Trustee”), dated as of           , 2021 (the “Trust Agreement”), the Company hereby requests that you deliver
to the redeeming Public Shareholders of the Company $____ of the principal and interest income earned on the Property as of the date hereof
to a segregated account held by you on behalf of the Beneficiaries for distribution to the Public Shareholders who have requested redemption
of their Ordinary Shares. Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement.


 


The Company needs such funds to pay its Public
Shareholders who have properly elected to have their Ordinary Shares redeemed by the Company in connection with a shareholder vote to
approve an amendment to the Company’s amended and restated memorandum and articles of association
(A) to modify the substance or timing of the Company’s obligation to allow redemption in connection
with its initial business combination or to redeem 100% of its public shares if the Company has not consummated an initial Business Combination
within such time as is described in the Company’s amended and restated memorandum and articles
of association or (B) with respect to any other material provisions relating to shareholders’ rights or pre-initial Business Combination
activity. As such, you are hereby directed and authorized to transfer (via wire transfer) such funds promptly upon your receipt of this
letter.


 


	 	Very truly yours,
	 	 
	 	Mountain & Co. I Acquisition Corp.
	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:
	 	 
	cc:    Credit Suisse Securities (USA) LLC	 


 






    		



     


    

 


EXHIBIT E


 


[Letterhead of Company]


 


[Insert date]


 


Continental Stock Transfer & Trust Company


1 State Street, 30th Floor


New York, New York 10004


Attn: [ ]


 


		Re:	Trust Account – Extension Letter



 


Mr./Ms. [ ]:


 


Pursuant to Section 1(i) of the Investment Management Trust Agreement
between Mountain & Co. I Acquisition Corp. (the “Company”) and Continental Stock Transfer & Trust Company,
dated as of _________, 2021 (the “Trust Agreement”), this is to advise you that the Company is extending the
time available to consummate a Business Combination for an additional three (3) months, from _______ to _________ (the “Extension”).


 


This Extension Letter shall serve as the notice required with respect
to Extension prior to the Deadline. Capitalized terms used but not defined herein shall have the meanings set forth in the Trust Agreement.


 


In accordance with the terms of the Trust Agreement, we hereby authorize
you to deposit [2,000,000]1, which will be wired to you,
into the Trust Account investments upon receipt.


 


Very truly yours,


 


Mountain & Co. I Acquisition Corp.


 





	 	By:	 
	 	Name:	 
	 	Title:	 



 


cc: Credit Suisse Securities (USA) LLC


 


 






 




1
$2,300,000 if the underwriters' over-allotment option was exercised in full.