EX-10.1






 EXHIBIT 10.1 

INVESTMENT MANAGEMENT TRUST AGREEMENT 

This Investment Management Trust Agreement (this “Agreement”) is made effective as of [ ], 2020 by and between
Thayer Ventures Acquisition Corporation, a Delaware corporation (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. 333-249390 (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 share of the Company’s Class A common stock, par value $0.0001 per share (the “Common Stock”), 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 Stifel,
Nicolaus & Company, Incorporated and Oppenheimer & Co. Inc., as representatives (the “Representatives”) of the several underwriters (the “Underwriters”) named therein; 

WHEREAS, as described in the Prospectus, $150,000,000 of the gross proceeds of the Offering and sale of the Private Placement Warrants (as
defined in the Underwriting Agreement) (or $172,500,000 if the Underwriters’ over-allotment option is exercised in full) 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 Common Stock 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 stockholders for whose benefit the Trustee shall hold the Property will be referred to as the “Public Stockholders,” and
the Public Stockholders and the Company will be referred to together as the “Beneficiaries”); 
 WHEREAS, pursuant
to the Underwriting Agreement, a portion of the Property up to $6,000,000, or up to $6,900,000 if the Underwriters’ over-allotment option is exercised in full, is attributable to deferred underwriting discounts and commissions that will be
payable by the Company to the Underwriters 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) in the United States, maintained by the Trustee 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 and the Trustee may earn bank credits or other
consideration; 

  
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 (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 Representatives
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 Co-Chief Executive Officer, Chief Financial Officer, Co-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 Representatives, 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 and not previously released to
the Company to pay its taxes (less up to $100,000 of such net interest 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 later of (1) 18
months after the closing of the Offering and (2) such later date as may be approved by the Company’s stockholders in accordance with the Company’s amended and restated certificate of incorporation 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 and not previously released to the Company to pay its taxes (less up to $100,000 of such net interest to pay dissolution expenses), shall be distributed to the Public
Stockholders 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; 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, so long as there is no reduction in the principal amount per share initially deposited in the
Trust Account; provided, further, that if the tax to be paid is a franchise tax, the written request by the Company to make such distribution shall be accompanied by a copy of the franchise tax bill from the State of Delaware for the Company (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 “Stockholder Redemption Withdrawal Instruction”), the Trustee shall
distribute on behalf of the Company the amount requested by the Company to be used to redeem shares of Common Stock from Public Stockholders properly submitted in connection with a stockholder vote to approve an amendment to the Company’s
amended and restated certificate of incorporation to modify the substance or timing of the Company’s obligation to allow redemption in connection with the initial Business Combination or to redeem 100% of shares of Common Stock included in the
Units sold in the Offering 

  
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(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
certificate of incorporation or with respect to any other provisions relating to stockholders’ rights or pre-initial Business Combination activity; and 

(l) Not make any withdrawals or distributions from the Trust Account other than pursuant to Section 1(i),
(j) or (k) above. 
 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, Co-Chief Executive Officer, Chief Financial Officer, Co-President, , Secretary or other authorized officer of the Company. 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 stockholders regarding a merger, capital stock exchange, asset acquisition, stock
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
stockholder meeting verifying the vote of such stockholders regarding such Business Combination; 
 (e) Provide the Representatives with
copies 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 Representatives, 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
Representatives on behalf of the Underwriters prior to any transfer of the funds held in the Trust Account to the Company or any other person; 

  
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 (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 Representatives, on behalf of the Underwriters, exercise 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, which shall in no event be less than $6,000,000 
 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 

  
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 (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. 
 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 by the Company 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, without giving effect
to conflicts of law principles that would result in the application of the substantive laws of another jurisdiction. This Agreement may be executed in several original or facsimile counterparts, each one of which shall constitute an original, and
together shall constitute but one instrument. 
 (c) This Agreement contains the entire agreement and understanding of the parties hereto
with respect to the subject matter hereof. Subject to Section 6(d) hereof, 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) This Agreement or any provision hereof may only be changed, amended or modified pursuant to
Section 6(c) hereof with the Consent of the Stockholders. For purposes of this Section 6(d), the “Consent of the Stockholders” means (i) receipt by the Trustee of a certificate from the inspector of elections of the
stockholder meeting certifying that the Company’s stockholders of record as of a record date established in 

  
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accordance with Section 213(a) of the Delaware General Corporation Law, as amended (or any successor rule), who hold sixty-five percent (65%) or more of all then outstanding shares of
the Common Stock and Class B common stock, par value $0.0001 per share, of the Company voting together as a single class, have voted in favor of such change, amendment or modification, or (ii) the Company’s stockholders of record as
of the record date who hold sixty-five percent (65%) or more of all then outstanding shares of the Common Stock and Class B common stock, par value $0.0001 per share, of the Company voting together as a single class, have delivered to the
Trustee a signed writing approving such change, amendment or modification. No such amendment will affect any Public Stockholder who has otherwise indicated his, her or its election to redeem his, her or its shares of Common Stock in connection with
a stockholder vote sought to amend this Agreement, including a corresponding change to the Company’s amended and restated certificate of incorporation. Except for any liability arising out of the Trustee’s gross negligence, fraud or
willful misconduct, the Trustee may rely conclusively on the certification from the inspector or elections referenced above and shall be relieved of all liability to any party for executing the proposed amendment in reliance thereon. 

(e) The parties hereto consent to the jurisdiction and venue of any state or federal court located in the City of New York or the 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. 

(f) 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: ] 

	
	 if to the Company, to:

	
	 Thayer Ventures Acquisition Corporation

	 25852 McBean Parkway, Suite 508,

	 Valencia, CA 91355

	 Attn: Mark Farrell

	 Email: mark@thayerventures.com

	
	 in each case, with copies to:

	
	 Paul Hastings LLP

	 515 South Flower Street, Twenty-Fifth Floor

	 Los Angeles, CA 90071

	 Attn: Jonathan Ko

	 Email: jonathanko@paulhastings.com and

	
	 and

	
	 Stifel, Nicolaus & Company, Incorporated

	 1 South Street, 15th Floor

	 Baltimore, Maryland 21202

	
	 Oppenheimer & Co. Inc.

	 85 Broad Street

	 New York, New York 10004

	 and



  
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	 Goodwin Procter LLP

	 100 Northern Avenue

	 Boston, Massachusetts 02210

	 Attn.: Jocelyn M. Arel, Esq.

	 Email: JArel@goodwinlaw.com


 (g) 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. 
 (h) 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. 

(i) 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. 

(j) Each of the Company and the Trustee hereby acknowledges and agrees that the Representatives on behalf of the Underwriters are third-party
beneficiaries of this Agreement. 
 (k) 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:
	 	
		 	 Title:
	 	
	
	 THAYER VENTURES ACQUISITION CORPORATION

		
	By:	 	            
		 	 Name:
	 	 Mark Farrell

		 	 Title:
	 	 Co-Chief Executive Officer



 [Signature Page to Investment Management Trust Agreement] 

  
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 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 Sections 1 and 2
	  	Billed to Company following disbursement made to Company under Section 1 and 2	  	$	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	 


	


  
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 EXHIBIT A 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn: [______] 

 

	 	Re:	 Trust Account No.          Termination Letter



 Dear [_______]: 

Pursuant to Section 1(i) of the Investment Management Trust Agreement between Thayer Ventures Acquisition
Corporation (the “Company”) and Continental Stock Transfer & Trust Company (“Trustee”), dated as of         , 2020 (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 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 Representatives on behalf of the Underwriters (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 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 by a Co-Chief Executive Officer, the Chief Financial Officer or a Co-President, which verifies that the Business Combination has been approved by a vote of the Company’s
stockholders, if a vote is held and (b) a joint written instruction signed by the Company and the Representatives with respect to the transfer of the funds held in the Trust Account, including payment of amounts owed to public stockholders who
have properly exercised their redemption rights and payment of the Deferred Discount directly to the account or accounts directed by the Representatives 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. 

  
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	 Very truly yours,

	
	 Thayer Ventures Acquisition Corporation

		
	By:	 	            
		 	 Name:

		 	 Title:



  

			
	 Agreed and acknowledged by:

	
	 Stifel, Nicolaus & Company, Incorporated

		
	By:	 	            
		 	 Name:

		 	 Title:


  

			
	 Oppenheimer & Co. Inc.

		
	By:	 	            
		 	 Name:

		 	 Title:



  
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 EXHIBIT B 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn: [_________] 

 

	 	Re:	 Trust Account No.          Termination Letter



 Dear [__________]: 

Pursuant to Section 1(i) of the Investment Management Trust Agreement between Thayer Ventures Acquisition
Corporation (the “Company”) and Continental Stock Transfer & Trust Company (the “Trustee”), dated as of         , 2020 (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 Certificate of Incorporation, 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 Stockholders. The Company has
selected                 , 20     as the effective date for the purpose of determining when the Public Stockholders 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 Stockholders in accordance with the terms of the Trust
Agreement and the Amended and Restated Certificate of Incorporation 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,

			
		 		 	 Thayer Ventures Acquisition Corporation

				
		 		 	By:	 	            
		 		 		 	 Name:

		 		 		 	 Title:

	 cc: Stifel, Nicolaus & Company, Incorporated

Oppenheimer & Co. Inc.
	 		 	

  

	(2)	 18 months from the closing of the Offering or such later date as may be approved by the Company’s
stockholders in accordance with the Company’s amended and restated certificate of incorporation. 



  
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 EXHIBIT C 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn: [________] 

Re: Trust Account No.          Tax Payment Withdrawal
Instruction 
 Dear [________]: 
 Pursuant
to Section 1(j) of the Investment Management Trust Agreement between Thayer Ventures Acquisition Corporation (the “Company”) and Continental Stock Transfer & Trust Company (the
“Trustee”), dated as of         , 2020 (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,

			
		 		 	 Thayer Ventures Acquisition Corporation

				
		 		 	By:	 	            
		 		 		 	 Name:

		 		 		 	 Title:

	 cc: Stifel, Nicolaus & Company, Incorporated;

Oppenheimer & Co. Inc
	 		 	


  
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 EXHIBIT D 

[Letterhead of Company] 

[Insert date] 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn: [________] 

Re: Trust Account No.         Stockholder Redemption Withdrawal
Instruction 
 Dear [________]: 
 Pursuant
to Section 1(k) of the Investment Management Trust Agreement between Thayer Ventures Acquisition Corporation (the “Company”) and Continental Stock Transfer & Trust Company (the
“Trustee”), dated as of         , 2020 (the “Trust Agreement”), the Company hereby requests that you deliver to the redeeming Public Stockholders 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. 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 Stockholders who have properly
elected to have their shares of Common Stock redeemed by the Company in connection with a stockholder vote to approve an amendment to the Company’s amended and restated certificate of incorporation to (i) modify the substance or timing of
the Company’s obligation to allow redemption in connection with an initial Business Combination or to redeem 100% of the shares of Common Stock included in the Units sold in the Offering if the Company has not consummated an initial Business
Combination within such time as is described in the Company’s amended and restated certificate of incorporation or (ii) with respect to any other provisions relating to stockholders’ 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 to a segregated account held by
you on behalf of the Beneficiaries. 
  

							
		 		 	 Very truly yours,

			
		 		 	 Thayer Ventures Acquisition Corporation

				
		 		 	By:	 	            
		 		 		 	 Name:

		 		 		 	 Title:

	 cc: Stifel, Nicolaus & Company, Incorporated;

Oppenheimer & Co. Inc
	 		 	


  
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