Document:

EX-4.4

 Exhibit 4.4 

WARRANT AGREEMENT 
 This
agreement (“Agreement”) is made as of [•], 2021 between Gladstone Acquisition Corp., a Delaware corporation (the “Company”), and Continental Stock Transfer & Trust Company, a limited purpose trust
company, as warrant agent (the “Warrant Agent”, also referred to herein as the “Transfer Agent”). 

WHEREAS, the Company is engaged in a public offering (“Public Offering”) of up to 11,500,000 units (including up to 1,500,000
units subject to the Over-allotment Option (as defined below)) (“Units”), each Unit comprised of one share of Class A common stock of the Company, par value $0.0001 per share (“Common Stock”), and one-half warrant, and, in connection therewith, will issue and deliver 5,000,000 warrants (or up to 5,750,000 warrants if the Over-allotment Option (defined below) is exercised in full) (the “Public
Warrants”) to the public investors in connection with the Public Offering; and 
 WHEREAS, the Company has filed with the
Securities and Exchange Commission (the “SEC”) a Registration Statement on Form S-1, File No. 333-252916 (“Registration
Statement”), and a prospectus (the “Prospectus”) for the registration, under the Securities Act of 1933, as amended (“Act”), of the Units, the Public Warrants and the Common Stock included in the Units; and

 WHEREAS, the Company has received binding commitments from Gladstone Sponsor, LLC (the “Sponsor”) to purchase up to an
aggregate of 4,200,000 warrants (or up to 4,500,000 warrants if the Over-allotment Option is exercised in full) (the “Private Warrants”) bearing the legend set forth in Exhibit B hereto at a purchase price of $1.00 per Private
Warrant, in a private placement transaction to occur simultaneously with the consummation of the Public Offering; and 
 WHEREAS, in order
to finance the Company’s transaction costs in connection with an intended initial Business Combination (as defined below), the Sponsor or an affiliate of the Sponsor or the Company’s officers and directors may, but are not obligated to,
loan to the Company funds as the Company may require, of which up to $1,500,000 of such loans may be convertible into up to an additional 1,000,000 warrants at a price of $1.50 per warrant (the “Working Capital Warrants”); and 

WHEREAS, following consummation of the Public Offering, the Company may issue additional warrants (“Post IPO Warrants” and
together with the Public Warrants, Private Warrants and Working Capital Warrants, the “Warrants”) in connection with, or following the consummation by the Company of, a Business Combination (defined below); and 

WHEREAS, each whole Warrant entitles the holder thereof to purchase one share of Common Stock for $11.50 per whole share, subject to
adjustment as described herein. Only whole Warrants are exercisable. A holder of the Public Warrants will not be able to exercise any fraction of a Warrant; 

WHEREAS, the Company desires the Warrant Agent to act on behalf of the Company, and the Warrant Agent is willing to so act, in connection with
the issuance, registration, transfer, exchange, redemption, and exercise of the Warrants; and 
 WHEREAS, the Company desires to provide for
the form and provisions of the Warrants, the terms upon which they shall be issued and exercised, and the respective rights, limitation of rights, and immunities of the Company, the Warrant Agent, and the holders of the Warrants; and 

WHEREAS, all acts and things have been done and performed which are necessary to make the Warrants, when executed on behalf of the Company and
countersigned by or on behalf of the Warrant Agent, as provided herein, the valid, binding, and legal obligations of the Company, and to authorize the execution and delivery of this Agreement. 

NOW, THEREFORE, in consideration of the mutual agreements herein contained, the parties hereto agree as follows: 

 1. Appointment of Warrant Agent. The Company hereby appoints the Warrant Agent to act
as agent for the Company for the Warrants, and the Warrant Agent hereby accepts such appointment and agrees to perform the same in accordance with the terms and conditions set forth in this Agreement. 

2. Warrants. 
 2.1. Form
of Warrant. Each Warrant shall be issued in registered form only, shall be in substantially the form of Exhibit A hereto, the provisions of which are incorporated herein and shall be signed by, or bear the facsimile signature of, the Chairman of
the Board of Directors of the Company (the “Board”) or Chief Executive Officer and the Chief Financial Officer, Treasurer, Secretary or Assistant Secretary of the Company and shall bear a facsimile of the Company’s seal. In the
event the person whose facsimile signature has been placed upon any Warrant shall have ceased to serve in the capacity in which such person signed the Warrant before such Warrant is issued, it may be issued with the same effect as if he or she had
not ceased to be such at the date of issuance. 
 2.2. Uncertificated Warrants. Notwithstanding anything herein to the contrary, any
Warrant, or portion thereof, may be issued as part of, and be represented by, a Unit, and any Warrant may be issued in uncertificated or book-entry form through the Warrant Agent and/or the facilities of The Depository Trust Company or other
book-entry depositary system, in each case as determined by the Board or by an authorized committee thereof. Any Warrant so issued shall have the same terms, force and effect as a certificated Warrant that has been duly countersigned by the Warrant
Agent in accordance with the terms of this Agreement. All of the Public Warrants shall initially be represented by one or more book-entry certificates (each, a “Book-Entry Warrant Certificate”). 

2.3. Effect of Countersignature. Except with respect to uncertificated Warrants as described above, unless and until countersigned by
the Warrant Agent pursuant to this Agreement, a Warrant shall be invalid and of no effect and may not be exercised by the holder thereof. 

2.4. Registration. 

2.4.1. Warrant Register. The Warrant Agent shall maintain books (“Warrant Register”) for the registration of original
issuance and the registration of transfer of the Warrants. Upon the initial issuance of the Warrants, the Warrant Agent shall issue and register the Warrants in the names of the respective holders thereof in such denominations and otherwise in
accordance with instructions delivered to the Warrant Agent by the Company. All of the Public Warrants shall initially be represented by one or more Book-Entry Warrant Certificates deposited with The Depository Trust Company (the
“Depositary”) and registered in the name of Cede & Co., a nominee of the Depositary. Ownership of beneficial interests in the Public Warrants shall be shown on, and the transfer of such ownership shall be effected through,
records maintained by (i) the Depositary or its nominee for each Book-Entry Warrant Certificate, or (ii) institutions that have accounts with the Depositary (each such institution, with respect to a Warrant in its account, a
“Participant”). 
 If the Depositary subsequently ceases to make its book-entry settlement system available for the Public Warrants, the
Company may instruct the Warrant Agent regarding making other arrangements for book-entry settlement. In the event that the Public Warrants are not eligible for, or it is no longer necessary to have the Public Warrants available in, book-entry form,
the Warrant Agent shall provide written instructions to the Depositary to deliver to the Warrant Agent for cancellation each Book-Entry Warrant Certificate, and the Company shall instruct the Warrant Agent to deliver to the Depositary definitive
certificates in physical form evidencing such Warrants (“Definitive Warrant Certificate”). Such Definitive Warrant Certificate shall be in the form annexed hereto as Exhibit A, with appropriate insertions, modifications and
omissions, as provided above. 
 2.4.2. Registered Holder. Prior to due presentment for registration of transfer of any Warrant, the
Company and the Warrant Agent may deem and treat the person in whose name such Warrant is then registered in the Warrant Register (“registered holder”) as the absolute owner of such Warrant and of each Warrant represented thereby
(notwithstanding any notation of ownership or other writing on the Warrant certificate made by anyone other than the Company or the Warrant Agent), for the purpose of any exercise thereof, and for all other purposes, and neither the Company nor the
Warrant Agent shall be affected by any notice to the contrary. 

 2.5. Detachability of Warrants. The securities comprising the Units will not be
separately transferable until the 52nd day following the date of the Prospectus or, if such 52nd day is not on a day, other than Saturday, Sunday or federal holiday, on which banks in New York City are generally open for normal business (a
“Business Day”), then on the immediately succeeding Business Day following such date, or earlier with the consent of EF Hutton, division of Benchmark Investments, LLC (the “Representative”), but in no event will the
Representative allow separate trading of the securities comprising the Units until (i) the Company has filed a Current Report on Form 8-K which includes an audited balance sheet reflecting the
receipt by the Company of the gross proceeds of the Public Offering including the proceeds received by the Company from the exercise of the underwriters’ over-allotment option in the Public Offering (the “Over-allotment
Option”), if the Over-allotment Option is exercised prior to the filing of the Form 8-K, and (ii) the Company has issued a press release announcing when such separate trading shall
begin (the “Detachment Date”); provided that no fractional Warrants will be issued upon separation of the Units and only whole Warrants will trade. 

2.6. Private Warrant and Working Capital Warrant Attributes. The Private Warrants and Working Capital Warrants will be issued in the
same form as the Public Warrants. 
 2.7. Post IPO Warrants. The Post IPO Warrants, when and if issued, shall have the same terms and
be in the same form as the Public Warrants except as may be agreed upon by the Company. 
 3. Terms and Exercise of Warrants 

3.1. Warrant Price. Each whole Warrant shall, when countersigned by the Warrant Agent (except with respect to uncertificated Warrants),
entitle the registered holder thereof, subject to the provisions of such Warrant and of this Agreement, to purchase from the Company the number of shares of Common Stock stated therein, at the price of $11.50 per share, subject to the adjustments
provided in Section 4 hereof and in the last sentence of this Section 3.1. The term “Warrant Price” as used in this Agreement refers to the price per share at which the shares of Common Stock may be purchased at the time a
Warrant is exercised. The Company in its sole discretion may lower the Warrant Price at any time prior to the Expiration Date (as defined below) for a period of not less than twenty (20) Business Days; provided, that the Company shall provide
at least twenty (20) days’ prior written notice of such reduction to registered holders of the Warrants and, provided further that any such reduction shall be applied consistently to all of the Warrants. 

3.2. Duration of Warrants. A Warrant may be exercised only during the period commencing on the later of 30 days after the consummation
by the Company of a merger, share exchange, asset acquisition, stock purchase, recapitalization, reorganization or other similar business combination with one or more businesses or entities (“Business Combination”) (as described
more fully in the Registration Statement) or 12 months from the closing of the Public Offering, and terminating at 5:00 p.m., New York City time on the earlier to occur of (i) five years from the consummation of a Business Combination,
(ii) the Redemption Date as provided in Section 6.2 of this Agreement and (iii) the liquidation of the Company (“Expiration Date”), provided, however, that the exercise of any Warrant shall be subject to the
satisfaction of any applicable conditions, as set forth in subsection 3.3.2 below, with respect to an effective registration statement. The period of time from the date the Warrants will first become exercisable until the expiration of the Warrants
shall hereafter be referred to as the “Exercise Period.” Except with respect to the right to receive the Redemption Price (as set forth in Section 6 hereunder), as applicable, each Warrant not exercised on or before the
Expiration Date shall become void, and all rights thereunder and all rights in respect thereof under this Agreement shall cease on the Expiration Date. The Company in its sole discretion may extend the duration of the Warrants by delaying the
Expiration Date; provided, however, that the Company will provide at least twenty (20) days’ prior written notice of any such extension to registered holders and, provided further that any such extension shall be applied consistently to
all of the Warrants. 
 3.3. Exercise of Warrants. 

3.3.1. Payment. Subject to the provisions of the Warrant and this Agreement, a Warrant may be exercised by the registered holder
thereof by delivering to the Warrant Agent at its corporate trust department (i) the Definitive Warrant Certificate evidencing the Warrants to be exercised, or, in the case of a Book-Entry Warrant Certificate, the Warrants to be exercised (the
“Book-Entry Warrants”) on the records of the Depositary to an account of the Warrant Agent at the Depositary designated for such purposes in writing by the Warrant Agent to the Depositary

 
from time to time, (ii) an election to purchase (“Election to Purchase”) shares of Common Stock pursuant to the exercise of a Warrant, properly completed and executed by the
registered holder on the reverse of the Definitive Warrant Certificate or, in the case of a Book-Entry Warrant Certificate, properly delivered by the Participant in accordance with the Depositary’s procedures, and (iii) payment in full of
the Warrant Price for each full share of Common Stock as to which the Warrant is exercised and any and all applicable taxes due in connection with the exercise of the Warrant, the exchange of the Warrant for the shares of Common Stock and the
issuance of such shares of Common Stock, as follows: 
 (a) in lawful money of the United States, in good certified check or good bank draft
payable to the order of the Warrant Agent or by wire transfer of immediately available funds; 
 (b) in the event of redemption pursuant to
Section 6 hereof in which the Board has elected to require all holders of Warrants to exercise such Warrants on a “cashless basis,” by surrendering the Warrants for that number of shares of Common Stock equal to the quotient obtained
by dividing (x) the product of the number of shares of Common Stock underlying the Warrants, multiplied by the excess of the “Fair Market Value” (defined below) over the Warrant Price by (y) the Fair Market Value. Solely for
purposes of this Section 3.3.1(b), the “Fair Market Value” shall mean the average reported last sale price of the Common Stock for the ten (10) trading days ending on the third trading day prior to the date on which the notice of
redemption is sent to holders of the Warrants pursuant to Section 6 hereof; or 
 (c) as provided in Section 7.4 hereof. 

3.3.2. Issuance of Shares of Common Stock. As soon as practicable after the exercise of any Warrant and the clearance of the funds in
payment of the Warrant Price (if any), the Company shall issue to the registered holder of such Warrant a book-entry position or certificate, as applicable, for the number of full shares of Common Stock to which he, she or it is entitled, registered
in such name or names as may be directed by him, her or it, and if such Warrant shall not have been exercised in full, a new book-entry position or countersigned Warrant, as applicable, for the number of shares of Common Stock as to which such
Warrant shall not have been exercised. If fewer than all the Warrants evidenced by a Book-Entry Warrant Certificate are exercised, a notation shall be made to the records maintained by the Depositary, its nominee for each Book-Entry Warrant
Certificate, or a Participant, as appropriate, evidencing the balance of the Warrants remaining after such exercise. Notwithstanding the foregoing, the Company shall not be obligated to deliver any shares of Common Stock pursuant to the exercise of
a Warrant and shall have no obligation to settle such Warrant exercise unless a registration statement under the Act with respect to the shares of Common Stock underlying the Warrants is then effective and a prospectus relating thereto is current,
subject to the Company’s satisfying its obligations under Section 7.4. No Warrant shall be exercisable and the Company shall not be obligated to issue shares of Common Stock upon exercise of a Warrant unless the Common Stock issuable upon
such Warrant exercise have been registered, qualified or deemed to be exempt from registration or qualification under the securities laws of the state of residence of the registered holder of the Warrants. In the event that the conditions in the two
immediately preceding sentences are not satisfied with respect to a Warrant, the holder of such Warrant shall not be entitled to exercise such Warrant and such Warrant may have no value and expire worthless, in which case the purchaser of a Unit
containing such Warrants shall have paid the full purchase price for the Unit solely for the Common Stock underlying such Unit. In no event will the Company be required to net cash settle the Warrant exercise. The Company may require holders of
Warrants to settle the Warrant on a “cashless basis” pursuant to Section 7.4. If, by reason of any exercise of Warrants on a “cashless basis”, the holder of any Warrant would be entitled, upon the exercise of such Warrant,
to receive a fractional interest in a share of Common Stock, the Company shall round down to the nearest whole number, the number of shares of Common Stock to be issued to such holder. 

3.3.3. Valid Issuance. All shares of Common Stock issued upon the proper exercise of a Warrant in conformity with this Agreement shall
be validly issued, fully paid and nonassessable. 
 3.3.4. Date of Issuance. Each person in whose name any book entry position or
certificate for shares of Common Stock is issued shall for all purposes be deemed to have become the holder of record of such shares on the date on which the Warrant, or book entry position representing such Warrant, was surrendered and payment of
the Warrant Price was made, irrespective of the date of delivery of such certificate in the case of a certificated Warrant, except that, if the date of such surrender and payment is a date when the share transfer books of the Company or book entry
system of the Warrant Agent are closed, such person shall be deemed to have become the holder of such shares at the close of business on the next succeeding date on which the share transfer books or book entry system are open. 

 3.3.5 Maximum Percentage. A holder of a Warrant may notify the Company in writing in
the event it elects to be subject to the provisions contained in this subsection 3.3.5; however, no holder of a Warrant shall be subject to this subsection 3.3.5 unless he, she or it makes such election. If the election is made by a holder, the
Warrant Agent shall not effect the exercise of the holder’s Warrant, and such holder shall not have the right to exercise such Warrant, to the extent that after giving effect to such exercise, such person (together with such person’s
affiliates), to the Warrant Agent’s actual knowledge, would beneficially own in excess of 4.9% or 9.8% (or such other amount as a holder may specify) (the “Maximum Percentage”) of the shares of Common Stock outstanding
immediately after giving effect to such exercise. For purposes of the foregoing sentence, the aggregate number of shares of Common Stock beneficially owned by such person and its affiliates shall include the number of shares of Common Stock issuable
upon exercise of the Warrant with respect to which the determination of such sentence is being made, but shall exclude shares of Common Stock that would be issuable upon (x) exercise of the remaining, unexercised portion of the Warrant
beneficially owned by such person and its affiliates and (y) exercise or conversion of the unexercised or unconverted portion of any other securities of the Company beneficially owned by such person and its affiliates (including, without
limitation, any convertible notes or convertible preferred stock or warrants) subject to a limitation on conversion or exercise analogous to the limitation contained herein. Except as set forth in the preceding sentence, for purposes of this
paragraph, beneficial ownership shall be calculated in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). To the extent that a holder makes the election described in this
subsection 3.3.5, the Warrant Agent shall not effect the exercise of the holder’s Warrant, and such holder shall not have the right to exercise such Warrant unless it provides to the Warrant Agent in its Election to Purchase, a certification
that, upon after giving effect to such exercise, such person (together with such person’s affiliates) or any “group” of which Holder or its affiliates is a member, would beneficially own in excess of the Maximum Percentage of the
Ordinary Shares outstanding immediately after giving effect to such exercise as determined in accordance with this subsection 3.3.5. For purposes hereof, “group” has the meaning set forth in Section 13(d) of the Exchange Act and
applicable regulations of the Commission, and the percentage held by Holder shall be determined in a manner consistent with the provisions of Section 13(d) of the Exchange Act. For purposes of the Warrant, in determining the number of
outstanding shares of Common Stock, the holder may rely on the number of outstanding shares of Common Stock as reflected in (1) the Company’s most recent annual report on
Form 10-K, quarterly report on Form 10-Q, current report on Form 8-K or other public filing with
the SEC as the case may be, (2) a more recent public announcement by the Company or (3) any other notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding. For any reason at any time, upon
the written request of the holder of the Warrant, the Company shall, within two (2) Business Days, confirm orally and in writing to such holder the number of shares of Common Stock then outstanding. In any case, the number of outstanding shares
of Common Stock shall be determined after giving effect to the conversion or exercise of equity securities of the Company by the holder and its affiliates since the date as of which such number of outstanding shares of Common Stock was reported. By
written notice to the Company, the holder of a Warrant may from time to time increase or decrease the Maximum Percentage applicable to such holder to any other percentage specified in such notice; provided, however, that any such increase shall not
be effective until the sixty-first (61st) day after such notice is delivered to the Company. 
 4. Adjustments. 

4.1. Stock Dividends; Split Ups. If after the date hereof, and subject to the provisions of Section 4.6 below, the number of
outstanding shares of Common Stock is increased by a stock dividend payable in shares of Common Stock, or by a split up of shares of Common Stock, or other similar event, then, on the effective date of such stock dividend, split up or similar event,
the number of shares of Common Stock issuable on exercise of each Warrant shall be increased in proportion to such increase in outstanding shares of Common Stock. A rights offering to holders of the Common Stock entitling holders to purchase shares
of Common Stock at a price less than the “Fair Market Value” (as defined below) shall be deemed a share capitalization of a number of shares of Common Stock equal to the product of (i) the number of shares of Common Stock actually
sold in such rights offering (or issuable under any other equity securities sold in such rights offering that are convertible into or exercisable for the Common Stock) multiplied by (ii) one (1) minus the quotient of (x) the price per
share of Common Stock paid in such rights offering and divided by (y) the Fair Market Value. For purposes of this subsection 4.1, (i) if the rights offering 

 
is for securities convertible into or exercisable for Common Stock, in determining the price payable for shares of Common Stock, there shall be taken into account any consideration received for
such rights, as well as any additional amount payable upon exercise or conversion and (ii) “Fair Market Value” means the volume weighted average price of the Common Stock as reported during the ten (10) trading day period ending on
the trading day prior to the first date on which the Common Stock trades on the applicable exchange or in the applicable market, regular way, without the right to receive such rights. 

4.2. Aggregation of Shares. If after the date hereof, the number of outstanding shares of Common Stock is decreased by a consolidation,
combination, reverse stock split or reclassification of shares of Common Stock or other similar event, then, on the effective date of such consolidation, combination, reverse stock split, reclassification or similar event, the number of shares of
Common Stock issuable on exercise of each Warrant shall be decreased in proportion to such decrease in outstanding shares of Common Stock. 

4.3. Extraordinary Dividends. If the Company, at any time while the Warrants are outstanding and unexpired, shall pay a dividend or make
a distribution in cash, securities or other assets to the holders of the shares of Common Stock or other shares of the Company’s capital stock into which the Warrants are convertible (an “Extraordinary Dividend”), then the
Warrant Price shall be decreased, effective immediately after the effective date of such Extraordinary Dividend, by the amount of cash and the fair market value (as determined by the Board, in good faith) of any securities or other assets paid in
respect of such Extraordinary Dividend divided by all outstanding shares of the Company at such time (whether or not any shareholders waived their right to receive such dividend); provided, however, that none of the following shall be deemed an
Extraordinary Dividend for purposes of this provision: (a) any adjustment described in subsection 4.1 above, (b) any cash dividends or cash distributions which, when combined on a per share basis with all other cash dividends and cash
distributions paid on the Common Stock during the 365-day period ending on the date of declaration of such dividend or distribution does not exceed $0.50 per share (taking into account all of the
outstanding shares of the Company at such time (whether or not any shareholders waived their right to receive such dividend) and as adjusted to appropriately reflect any of the events referred to in other subsections of this Section 4 and
excluding cash dividends or cash distributions that resulted in an adjustment to the Warrant Price or to the number of shares of Common Stock issuable on exercise of each Warrant) but only with respect to the amount of the aggregate cash dividends
or cash distributions equal to or less than $0.50, (c) any payment to satisfy the conversion rights of the holders of the shares of Common Stock in connection with a proposed initial Business Combination or certain amendments to the Company’s
Amended and Restated Certificate of Incorporation (as described in the Registration Statement) or (d) any payment in connection with the Company’s liquidation and the distribution of its assets upon its failure to consummate a Business
Combination. Solely for purposes of illustration, if the Company, at a time while the Warrants are outstanding and unexpired, pays a cash dividend of $0.35 and previously paid an aggregate of $0.40 of cash dividends and cash distributions on the
Common Stock during the 365-day period ending on the date of declaration of such $0.35 dividend, then the Warrant Price will be decreased, effectively immediately after the effective date of such
$0.35 dividend, by $0.25 (the absolute value of the difference between $0.75 (the aggregate amount of all cash dividends and cash distributions paid or made in such 365-day period, including such
$0.35 dividend) and $0.50 (the greater of (x) $0.50 and (y) the aggregate amount of all cash dividends and cash distributions paid or made in such 365-day period prior to such $0.35 dividend)).
Furthermore, solely for the purposes of illustration, if following the closing of the Company’s initial Business Combination, there were total shares outstanding of 100,000,000 and the Company paid a $1.00 dividend to 17,500,000 of such shares
(with the remaining 82,500,000 shares waiving their right to receive such dividend), then no adjustment to the Warrant Price would occur as a $17.5 million dividend payment divided by 100,000,000 shares equals $0.175 per share which is less
than $0.50 per share. 
 4.4. Adjustments in Exercise Price. Whenever the number of shares of Common Stock purchasable upon the
exercise of the Warrants is adjusted, as provided in Sections 4.1 and 4.2 above, the Warrant Price shall be adjusted (to the nearest cent) by multiplying such Warrant Price immediately prior to such adjustment by a fraction (x) the numerator of
which shall be the number of shares of Common Stock purchasable upon the exercise of the Warrants immediately prior to such adjustment, and (y) the denominator of which shall be the number of shares of Common Stock so purchasable immediately
thereafter. 
 4.5. Replacement of Securities upon Reorganization, etc. In case of any reclassification or reorganization of the
outstanding shares of Common Stock (other than a change covered by Section 4.1, 4.2 or 4.3 hereof or that solely affects the par value of the Common Stock), or in the case of any merger or consolidation of the

 
Company with or into another corporation (other than a consolidation or merger in which the Company is the continuing corporation and that does not result in any reclassification or
reorganization of the outstanding Common Stock), or in the case of any sale or conveyance to another corporation or entity of the assets or other property of the Company as an entirety or substantially as an entirety in connection with which the
Company is dissolved, the Warrant holders shall thereafter have the right to purchase and receive, upon the basis and upon the terms and conditions specified in the Warrants and in lieu of the shares of Common Stock of the Company immediately
theretofore purchasable and receivable upon the exercise of the rights represented thereby, the kind and amount of shares of stock or other securities or property (including cash) receivable upon such reclassification, reorganization, merger or
consolidation, or upon a dissolution following any such sale or transfer, that the Warrant holder would have received if such Warrant holder had exercised his, her or its Warrant(s) immediately prior to such event. If any reclassification also
results in a change in the Common Stock covered by Section 4.1, 4.2 or 4.3, then such adjustment shall be made pursuant to Sections 4.1, 4.2, 4.3, 4.4 and this Section 4.5. The provisions of this Section 4.5 shall similarly apply to
successive reclassifications, reorganizations, mergers or consolidations, sales or other transfers. In no event will the Warrant Price be reduced to less than the par value per share issuable upon exercise of the Warrant. 

4.6. Issuance in connection with a Business Combination. If, in connection with a Business Combination, the Company (a) issues
additional shares of Common Stock or equity-linked securities at an issue price or effective issue price of less than $9.20 per share (with such issue price or effective issue price as determined by the Board, in good faith, and in the case of any
such issuance to the Sponsor, the initial stockholders or their affiliates, without taking into account any shares of the Company’s Class B common stock, par value $0.0001 per share (the “Class B Common
Stock”), issued prior to the Public Offering and held by the initial stockholders or their affiliates, as applicable, prior to such issuance) (the “Newly Issued Price”), (b) the aggregate gross proceeds from such issuances
represent more than 60% of the total equity proceeds, and interest thereon, available for the funding of the Business Combination on the date of the consummation of such Business Combination (net of redemptions), and (c) the Market Value (as
defined below) is below $9.20 per share, then the exercise price of the warrants will be adjusted (to the nearest cent) to be equal to 115% of the greater of (i) the Market Value or (ii) Newly Issued Price, and the Redemption Trigger Price
(as defined below) will be adjusted (to the nearest cent) to be equal to 180% of the greater of (i) the Market Value or (ii) the Newly Issued Price. Solely for purposes of this Section 4.6, the “Market Value” shall
mean the volume weighted average trading price of the Common Stock during the twenty (20) trading day period starting on the trading day prior to the date of the consummation of the Business Combination. 

4.7. Notices of Changes in Warrant. Upon every adjustment of the Warrant Price or the number of shares issuable upon exercise of a
Warrant, the Company shall give written notice thereof to the Warrant Agent, which notice shall state the Warrant Price resulting from such adjustment and the increase or decrease, if any, in the number of shares purchasable at such price upon the
exercise of a Warrant, setting forth in reasonable detail the method of calculation and the facts upon which such calculation is based. Upon the occurrence of any event specified in Sections 4.1, 4.2, 4.3, 4.4, 4.5, or 4.6, then, in any such event,
the Company shall give written notice to each Warrant holder, at the last address set forth for such holder in the Warrant Register, of the record date or the effective date of the event. Failure to give such notice, or any defect therein, shall not
affect the legality or validity of such event. 
 4.8. No Fractional Warrants or Shares. Notwithstanding any provision contained in
this Agreement to the contrary, the Company shall not issue fractional shares upon exercise of Warrants. If, by reason of any adjustment made pursuant to this Section 4, the holder of any Warrant would be entitled, upon the exercise of such
Warrant, to receive a fractional interest in a share, the Company shall, upon such exercise, round up to the nearest whole number of shares of Common Stock to be issued to the Warrant holder. 

4.9. Form of Warrant. The form of Warrant need not be changed because of any adjustment pursuant to this Section 4, and Warrants
issued after such adjustment may state the same Warrant Price and the same number of shares as is stated in the Warrants initially issued pursuant to this Agreement. However, the Company may at any time in its sole discretion make any change in the
form of Warrant that the Company may deem appropriate and that does not affect the substance thereof, and any Warrant thereafter issued or countersigned, whether in exchange or substitution for an outstanding Warrant or otherwise, may be in the form
as so changed. 
 4.10. Other Events. In case any event shall occur affecting the Company as to which none of the provisions of
preceding subsections of this Section 4 are strictly applicable, but which would require an adjustment to the terms of the Warrants in order to (i) avoid an adverse impact on the Warrants and (ii) effectuate the intent and

 
purpose of this Section 4, then, in each such case, the Company shall appoint a firm of independent public accountants, investment banking or other appraisal firm of recognized national
standing, which shall give its opinion as to whether or not any adjustment to the rights represented by the Warrants is necessary to effectuate the intent and purpose of this Section 4 and, if they determine that an adjustment is necessary, the
terms of such adjustment. The Company shall adjust the terms of the Warrants in a manner that is consistent with any adjustment recommended in such opinion. For the avoidance of doubt, all adjustments made pursuant to this Section 4.10 shall be
made equally to all outstanding Warrants. 
 4.11. No Adjustment. For the avoidance of doubt, no adjustment shall be made to the terms
of the Warrants solely as a result of an adjustment to the conversion ratio of the Class B Common Stock into shares of Common Stock or the conversion of the shares of Class B Common Stock into shares of Common Stock, in each case, pursuant
to the Company’s Amended and Restated Certificate of Incorporation, as further amended from time to time. 
 5. Transfer and Exchange
of Warrants. 
 5.1. Registration of Transfer. The Warrant Agent shall register the transfer, from time to time, of any
outstanding Warrant upon the Warrant Register, upon surrender of such Warrant for transfer, properly endorsed with signatures, in the case of certificated Warrants, properly guaranteed and accompanied by appropriate instructions for transfer. Upon
any such transfer, a new Warrant representing an equal aggregate number of Warrants shall be issued and the old Warrant shall be cancelled by the Warrant Agent. In the case of certificated Warrants, the Warrants so cancelled shall be delivered by
the Warrant Agent to the Company from time to time upon request. 
 5.2. Procedure for Surrender of Warrants. Warrants may be
surrendered to the Warrant Agent, together with a written request for exchange or transfer, and thereupon the Warrant Agent shall issue in exchange therefor one or more new Warrants as requested by the registered holder of the Warrants so
surrendered, representing an equal aggregate number of Warrants; provided, however, that except as otherwise provided herein or in any Book-Entry Warrant Certificate or Definitive Warrant Certificate, each Book-Entry Warrant Certificate and
Definitive Warrant Certificate may be transferred only in whole and only to the Depositary, to another nominee of the Depositary, to a successor depository, or to a nominee of a successor depository; provided further, however, that in the event that
a Warrant surrendered for transfer bears a restrictive legend (as in the case of the Private Placement Warrants and the Working Capital Warrants), the Warrant Agent shall not cancel such Warrant and issue new Warrants in exchange thereof until the
Warrant Agent has received an opinion of counsel for the Company stating that such transfer may be made and indicating whether the new Warrants must also bear a restrictive legend. 

5.3. Fractional Warrants. The Warrant Agent shall not be required to effect any registration of transfer or exchange which will result
in the issuance of a warrant certificate or book-entry position for a fraction of a warrant, except as part of the Units. 
 5.4. Service
Charges. No service charge shall be made for any exchange or registration of transfer of Warrants. 
 5.5. Warrant Execution and
Countersignature. The Warrant Agent is hereby authorized to countersign and to deliver, in accordance with the terms of this Agreement, the Warrants required to be issued pursuant to the provisions of this Section 5, and the Company,
whenever required by the Warrant Agent, will supply the Warrant Agent with Warrants duly executed on behalf of the Company for such purpose. 

5.6. Private Warrants and Working Capital Warrants. The Warrant Agent shall not register any transfer of Private Warrants or Working
Capital Warrants until after the consummation by the Company of an initial Business Combination, except for transfers (i) among the initial stockholders or to the Company’s or the initial stockholders’ members, officers, directors,
consultants or their affiliates, (ii) to a holder’s stockholders or members upon the holder’s liquidation, in each case if the holder is an entity, (iii) by bona fide gift to a member of the holder’s immediate family or to a
trust, the beneficiary of which is the holder or a member of the holder’s immediate family, in each case for estate planning purposes, (iv) by virtue of the laws of descent and distribution upon death, (v) pursuant to a qualified
domestic relations order, (vi) to the Company for no value for cancellation in connection with the consummation of a Business Combination, (vii) in connection with the consummation of a Business Combination at prices no greater than the
price at which the Warrants were originally purchased, (viii) in the event of the Company’s 

 
liquidation prior to its consummation of an initial Business Combination or (ix) in the event that, subsequent to the consummation of an initial Business Combination, the Company completes a
liquidation, merger, capital stock exchange or other similar transaction which results in all of the Company’s stockholders having the right to exchange their Common Stock for cash, securities or other property, in each case (except for clauses
(vi), (viii) or (ix) or with the Company’s prior written consent) on the condition that prior to such registration for transfer, the Warrant Agent shall be presented with written documentation pursuant to which each transferee (each, a
“Permitted Transferee”) or the trustee or legal guardian for such Permitted Transferee agrees to be bound by the transfer restrictions contained in this Agreement and any other applicable agreement the transferor is bound by. 

5.7. Transfers prior to Detachment. Prior to the Detachment Date, the Public Warrants may be transferred or exchanged only together with
the Unit in which such Warrant is included, and only for the purpose of effecting, or in conjunction with, a transfer or exchange of such Unit. Furthermore, each transfer of a Unit on the register relating to such Units shall operate also to
transfer the Warrants included in such Unit. Notwithstanding the foregoing, the provisions of this Section 5.7 shall have no effect on any transfer of Warrants on or after the Detachment Date. 

6. Redemption. 
 6.1.
Redemption. Not less than all of the outstanding Warrants may be redeemed, at the option of the Company, at any time during the Exercise Period, at the office of the Warrant Agent, upon the notice referred to in Section 6.2, at the price
of $0.01 per Warrant (“Redemption Price”), provided that the last sales price of the Common Stock equals or exceeds $18.00 per share (subject to adjustment in accordance with Section 4 hereof) (the “Redemption Trigger
Price”), on each of twenty (20) trading days within any thirty (30) trading day period commencing after the Warrants become exercisable and ending on the third trading day prior to the date on which notice of redemption is given
and provided that there is an effective registration statement covering the shares of Common Stock issuable upon exercise of the Warrants, and a current prospectus relating thereto, available throughout
the 30-day redemption period or the Company has elected to require the exercise of the Warrants on a “cashless basis” pursuant to subsection 3.3.1(b); provided, however, that if and when
the Warrants become redeemable by the Company, the Company may not exercise such redemption right if the issuance of shares of Common Stock upon exercise of the Warrants is not exempt from registration or qualification under applicable state blue
sky laws or the Company is unable to effect such registration or qualification. 
 6.2. Date Fixed for, and Notice of, Redemption. In
the event the Company shall elect to redeem all of the Warrants that are subject to redemption, the Company shall fix a date for the redemption (the “Redemption Date”). Notice of redemption shall be mailed by first class mail,
postage prepaid, by the Company not less than thirty (30) days prior to the Redemption Date to the registered holders of the Warrants to be redeemed at their last addresses as they shall appear on the registration books. Any notice mailed in
the manner herein provided shall be conclusively presumed to have been duly given whether or not the registered holder received such notice. 

6.3. Exercise After Notice of Redemption. The Warrants may be exercised, for cash (or on a “cashless basis” in accordance with
Section 3 of this Agreement) at any time after notice of redemption shall have been given by the Company pursuant to Section 6.2 hereof and prior to the Redemption Date. In the event the Company determines to require all holders of
Warrants to exercise their Warrants on a “cashless basis” pursuant to Section 3.3.1(b), the notice of redemption will contain the information necessary to calculate the number of shares of Common Stock to be received upon exercise of
the Warrants, including the “Fair Market Value” (as such term is defined in subsection 3.3.1(b) hereof) in such case. On and after the Redemption Date, the record holder of the Warrants shall have no further rights except to receive, upon
surrender of the Warrants, the Redemption Price. 
 7. Other Provisions Relating to Rights of Holders of Warrants. 

7.1. No Rights as Stockholder. A Warrant does not entitle the registered holder thereof to any of the rights of a stockholder of the
Company, including, without limitation, the right to receive dividends, or other distributions, exercise any preemptive rights to vote or to consent or to receive notice as stockholders in respect of the meetings of stockholders or the election of
directors of the Company or any other matter. 

 7.2. Lost, Stolen, Mutilated, or Destroyed Warrants. If any Warrant is lost, stolen,
mutilated, or destroyed, the Company and the Warrant Agent may on such terms as to indemnity or otherwise as they may in their discretion impose (which shall, in the case of a mutilated Warrant, include the surrender thereof), issue a new Warrant of
like denomination, tenor, and date as the Warrant so lost, stolen, mutilated, or destroyed. Any such new Warrant shall constitute a substitute contractual obligation of the Company, whether or not the allegedly lost, stolen, mutilated, or destroyed
Warrant shall be at any time enforceable by anyone. 
 7.3. Reservation of Shares of Common Stock. The Company shall at all times
reserve and keep available a number of its authorized but unissued shares of Common Stock that will be sufficient to permit the exercise in full of all outstanding Warrants issued pursuant to this Agreement. 

7.4 Registration of Ordinary Shares; Cashless Exercise at Company’s Option. 

7.4.1 Registration of Shares of Common Stock. The Company agrees that as soon as practicable after the closing of its initial Business
Combination, it shall use its best efforts to file with the SEC a registration statement for the registration, under the Act, of the shares of Common Stock issuable upon exercise of the Warrants, and it shall use its best efforts to take such action
as is necessary to register or qualify for sale, in those states in which the Warrants were initially offered by the Company and in those states where holders of Warrants then reside, the shares of Common Stock issuable upon exercise of the
Warrants, to the extent an exemption is not available. The Company will use its best efforts to cause the same to become effective and to maintain the effectiveness of such registration statement until the expiration of the Warrants in accordance
with the provisions of this Agreement. If any such registration statement has not been declared effective by the 60th Business Day following the closing of the Business Combination, holders of the Warrants shall have the right, during the period
beginning on the 61st Business Day after the closing of the Business Combination and ending upon such registration statement being declared effective by the SEC, and during any other period when the Company shall fail to have maintained an effective
registration statement covering the shares of Common Stock issuable upon exercise of the Warrants, to exercise such Warrants on a “cashless basis” by exchanging the Warrants (in accordance with Section 3(a)(9) of the Securities Act
(or any successor rule) or another exemption) for that number of shares of Common Stock equal to the quotient obtained by dividing (x) the product of the number of shares of Common Stock underlying the Warrants, multiplied by the excess of the
“Fair Market Value” (as defined below) over the Warrant Price by (y) the Fair Market Value. Solely for purposes of this subsection 7.4.1, “Fair Market Value” shall mean the average closing price of the Common Stock for the
ten (10) trading day period ending on the trading day prior to the date that notice of exercise is received by the Warrant Agent from the holder of such Warrants or its securities broker or intermediary. The date that notice of cashless
exercise is received by the Warrant Agent shall be conclusively determined by the Warrant Agent. Upon request, the Company shall provide the Warrant Agent with an opinion of counsel for the Company (which shall be an outside law firm with securities
law experience) stating that (i) the exercise of the Warrants on a cashless basis in accordance with this Section 7.4 is not required to be registered under the Act and (ii) the shares of Common Stock issued upon such exercise will be
freely tradable under U.S. federal securities laws by anyone who is not an affiliate (as such term is defined in Rule 144 under the Act) of the Company and, accordingly, will not be required to bear a restrictive legend. For the avoidance of any
doubt, unless and until all of the Warrants have been exercised on a cashless basis, the Company shall continue to be obligated to comply with its registration obligations under the first three sentences of this subsection 7.4.1. 

7.4.2 Cashless Exercise at Company’s Option. If the Common Stock is at the time of any exercise of a Warrant not listed on a
national securities exchange such that it satisfies the definition of a “covered security” under Section 18(b)(1) of the Act (or any successor rule), the Company may, at its option, require holders of Warrants who exercise Warrants to
exercise such Warrants on a “cashless basis” in accordance with Section 3(a)(9) of the Act (or any successor rule) or other available exemption) as described in subsection 7.4.1 and (i) in the event the Company so elects, the
Company shall not be required to file or maintain in effect a registration statement for the registration, under the Act, of the Common Stock issuable upon exercise of the Warrants, notwithstanding anything in this Agreement to the contrary or
(ii) if the Company does not so elect, the Company agrees to use its best efforts to register or qualify for sale the Common Stock issuable upon exercise of the Warrants under the blue sky laws of the state of residence of the exercising
Warrant holder to the extent an exemption is not available. 

 8. Concerning the Warrant Agent and Other Matters. 

8.1. Payment of Taxes. The Company will from time to time promptly pay all taxes and charges that may be imposed upon the Company or the
Warrant Agent in respect of the issuance or delivery of shares of Common Stock upon the exercise of Warrants, but the Company shall not be obligated to pay any transfer taxes in respect of the Warrants or such shares. 

8.2. Resignation, Consolidation, or Merger of Warrant Agent. 

8.2.1. Appointment of Successor Warrant Agent. The Warrant Agent, or any successor to it hereafter appointed, may resign its duties and
be discharged from all further duties and liabilities hereunder after giving sixty (60) days’ notice in writing to the Company. If the office of the Warrant Agent becomes vacant by resignation or incapacity to act or otherwise, the Company
shall appoint in writing a successor Warrant Agent in place of the Warrant Agent. If the Company shall fail to make such appointment within a period of thirty (30) days after it has been notified in writing of such resignation or incapacity by
the Warrant Agent or by the holder of the Warrant (who shall, with such notice, submit his Warrant for inspection by the Company), then the holder of any Warrant may apply to the Supreme Court of the State of New York for the County of New York for
the appointment of a successor Warrant Agent at the Company’s cost. Any successor Warrant Agent, whether appointed by the Company or by such court, shall be a corporation organized and existing under the laws of the State of New York, in good
standing and having its principal office in the Borough of Manhattan, City and State of New York, and authorized under such laws to exercise corporate trust powers and subject to supervision or examination by federal or state authority. After
appointment, any successor Warrant Agent shall be vested with all the authority, powers, rights, immunities, duties, and obligations of its predecessor Warrant Agent with like effect as if originally named as Warrant Agent hereunder, without any
further act or deed; but if for any reason it becomes necessary or appropriate, the predecessor Warrant Agent shall execute and deliver, at the expense of the Company, an instrument transferring to such successor Warrant Agent all the authority,
powers, and rights of such predecessor Warrant Agent hereunder; and upon request of any successor Warrant Agent the Company shall make, execute, acknowledge, and deliver any and all instruments in writing for more fully and effectually vesting in
and confirming to such successor Warrant Agent all such authority, powers, rights, immunities, duties, and obligations. 
 8.2.2. Notice
of Successor Warrant Agent. In the event a successor Warrant Agent shall be appointed, the Company shall give notice thereof to the predecessor Warrant Agent and the Transfer Agent for the shares of Common Stock not later than the effective date
of any such appointment. 
 8.2.3. Merger or Consolidation of Warrant Agent. Any corporation into which the Warrant Agent may be
merged or with which it may be consolidated or any corporation resulting from any merger or consolidation to which the Warrant Agent shall be a party shall be the successor Warrant Agent under this Agreement without any further act. 

8.3. Fees and Expenses of Warrant Agent. 

8.3.1. Remuneration. The Company agrees to pay the Warrant Agent reasonable remuneration for its services as such Warrant Agent
hereunder and will reimburse the Warrant Agent upon demand for all expenditures that the Warrant Agent may reasonably incur in the execution of its duties hereunder. 

8.3.2. Further Assurances. The Company agrees to perform, execute, acknowledge, and deliver or cause to be performed, executed,
acknowledged, and delivered all such further and other acts, instruments, and assurances as may reasonably be required by the Warrant Agent for the carrying out or performing of the provisions of this Agreement. 

 8.4. Liability of Warrant Agent. 

8.4.1. Reliance on Company Statement. Whenever in the performance of its duties under this Agreement, the Warrant Agent shall deem it
necessary or desirable that any fact or matter be proved or established by the Company prior to taking or suffering any action hereunder, such fact or matter (unless other evidence in respect thereof be herein specifically prescribed) may be deemed
to be conclusively proved and established by a statement signed by the Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, President, Secretary or Chairman of the Board and delivered to the Warrant Agent. The Warrant Agent may
rely upon such statement for any action taken or suffered in good faith by it pursuant to the provisions of this Agreement. 
 8.4.2.
Indemnity. The Warrant Agent shall be liable hereunder only for its own fraud, gross negligence, willful misconduct or bad faith. The Company agrees to indemnify the Warrant Agent and save it harmless against any and all liabilities,
including judgments, costs and reasonable counsel fees, for anything done or omitted by the Warrant Agent in the execution of this Agreement except as a result of the Warrant Agent’s fraud, gross negligence, willful misconduct, or bad faith.

 8.4.3. Exclusions. The Warrant Agent shall have no responsibility with respect to the validity of this Agreement or with respect
to the validity or execution of any Warrant (except its countersignature thereof); nor shall it be responsible for any breach by the Company of any covenant or condition contained in this Agreement or in any Warrant; nor shall it be responsible to
make any adjustments required under the provisions of Section 4 hereof or responsible for the manner, method, or amount of any such adjustment or the ascertaining of the existence of facts that would require any such adjustment; nor shall it by
any act hereunder be deemed to make any representation or warranty as to the authorization or reservation of any shares of Common Stock to be issued pursuant to this Agreement or any Warrant or as to whether any shares of Common Stock will, when
issued, be valid and fully paid and nonassessable. 
 8.5. Acceptance of Agency. The Warrant Agent hereby accepts the agency
established by this Agreement and agrees to perform the same upon the terms and conditions herein set forth and among other things, shall account promptly to the Company with respect to Warrants exercised and concurrently account for, and pay to the
Company, all monies received by the Warrant Agent for the purchase of shares of Common Stock through the exercise of Warrants. 
 8.5.
Waiver. The Warrant Agent has no right of set-off or any other right, title, interest or claim of any kind (“Claim”) in, or to any distribution of, the Trust Account (as defined in that
certain Investment Management Trust Agreement, dated as of the date hereof, by and between the Company and the Warrant Agent as trustee thereunder) and hereby agrees not to seek recourse, reimbursement, payment or satisfaction for any Claim against
the Trust Account for any reason whatsoever. The Warrant Agent hereby waives any and all Claims against the Trust Account and any and all rights to seek access to the Trust Account. 

9. Miscellaneous Provisions. 

9.1. Successors. All the covenants and provisions of this Agreement by or for the benefit of the Company or the Warrant Agent shall bind
and inure to the benefit of their respective successors and assigns. 
 9.2. Notices. Any notice, statement or demand authorized by
this Agreement to be given or made by the Warrant Agent or by the holder of any Warrant to or on the Company shall be sufficiently given when so delivered if by hand or overnight delivery or if sent by certified mail or private courier service
within five (5) days after deposit of such notice, postage prepaid, addressed (until another address is filed in writing by the Company with the Warrant Agent), as follows: 

Gladstone Acquisition Corporation 

1521 Westbranch Drive 
 Suite 100

 McLean, Virginia 22102 

Attention: Michael LiCalsi, General Counsel & Secretary 

 Any notice, statement or demand authorized by this Agreement to be given or made by the holder of any
Warrant or by the Company to or on the Warrant Agent shall be sufficiently given when so delivered if by hand or overnight delivery or if sent by certified mail or private courier service within five days after deposit of such notice, postage
prepaid, addressed (until another address is filed in writing by the Warrant Agent with the Company), as follows: 
 Continental Stock
Transfer & Trust Company 
 1 State Street, 30th Floor 

New York, New York 10004 
 Attn:
Compliance Department 
 with a copy in each case to: 

Cooley LLP 
 Reston Town Center

 11951 Freedom Drive, 14th Floor 

Reston, VA 20190-5640 
 Attn:
Thomas Salley 
 Email: tsalley@cooley.com

and 
 Loeb & Loeb LLP

 345 Park Avenue 
 New York,
NY 10154 
 Attn: Mitchell Nussbaum 

Email: mnussbaum@loeb.com. 
 9.3.
Applicable Law and Exclusive Forum. The validity, interpretation, and performance of this Agreement and of the Warrants shall be governed in all respects by 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. Subject to applicable law, the Company hereby agrees that any action, proceeding or claim against it arising out of or relating in any way to this
Agreement, including under the Act, shall be brought and enforced in the courts of the State of New York or the United States District Court for the Southern District of New York, and irrevocably submits to such jurisdiction, which jurisdiction
shall be exclusive forum for any such action, proceeding or claim. The Company hereby waives any objection to such exclusive jurisdiction and that such courts represent an inconvenient forum. Notwithstanding the foregoing, the provisions of this
paragraph will not apply to suits brought to enforce any liability or duty created by the Exchange Act or any other claim for which the federal district courts of the United States of America are the sole and exclusive forum. 

Any person or entity purchasing or otherwise acquiring any interest in the Warrants shall be deemed to have notice of and to have consented to
the forum provisions in this Section 9.3. If any action, the subject matter of which is within the scope the forum provisions above, is filed in a court other than a court located within the State of New York or the United States District Court
for the Southern District of New York (a “foreign action”) in the name of any warrant holder, such warrant holder shall be deemed to have consented to: (x) the personal jurisdiction of the state and federal courts located within the
State of New York or the United States District Court for the Southern District of New York in connection with any action brought in any such court to enforce the forum provisions (an “enforcement action”), and (y) having service of
process made upon such warrant holder in any such enforcement action by service upon such warrant holder’s counsel in the foreign action as agent for such warrant holder. 

9.4. Persons Having Rights under this Agreement. Nothing in this Agreement expressed and nothing that may be implied from any of the
provisions hereof is intended, or shall be construed, to confer upon, or give to, any person or corporation other than the parties hereto and the registered holders of the Warrants any right, remedy, or claim under or by reason of this Agreement or
of any covenant, condition, stipulation, promise, or agreement hereof. All covenants, conditions, stipulations, promises, and agreements contained in this Agreement shall be for the sole and exclusive benefit of the parties hereto (and the
Representative with respect to Sections 7.4 and 9.4, hereof) and their successors and assigns and of the registered holders of the Warrants. 

 9.5. Examination of the Warrant Agreement. A copy of this Agreement shall be
available at all reasonable times at the office of the Warrant Agent in the Borough of Manhattan, City and State of New York, for inspection by the registered holder of any Warrant. The Warrant Agent may require any such holder to submit his Warrant
for inspection by it. 
 9.6. Counterparts. This Agreement may be executed in any number of original or facsimile counterparts and
each of such counterparts shall for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument. 

9.7. Effect of Headings. The section headings herein are for convenience only and are not part of this Agreement and shall not affect
the interpretation thereof. 
 9.8. Amendments. This Agreement may be amended by the parties hereto without the consent of any
registered holder for the purpose of (i) curing any ambiguity or to correct any mistake, including to conform the provisions hereof to the description of the terms of the Warrants and this Agreement set forth in the Prospectus, or curing,
correcting or supplementing any defective provision contained herein, or (ii) adding or changing any other provisions with respect to matters or questions arising under this Agreement as the parties may deem necessary or desirable and that the
parties deem shall not adversely affect the interest of the registered holders. All other modifications or amendments, including any amendment to increase the Warrant Price or shorten the Exercise Period, shall require the written consent or vote of
the registered holders of at least 50% of the then outstanding Warrants and, solely with respect to any amendment to the terms of the Post-IPO Warrants (if any), 50% of the number of then outstanding Post-IPO Warrants. Notwithstanding the foregoing, the Company may lower the Warrant Price or extend the duration of the Exercise Period pursuant to Sections 3.1 and 3.2, respectively, without the consent of the
registered holders. 
 9.9. Trust Account Waiver. The Warrant Agent acknowledges and agrees that it shall not make any claims or
proceed against the trust account established by the Company in connection with the Public Offering (as more fully described in the Registration Statement) (“Trust Account”), including by way
of set-off, and shall not be entitled to any funds in the Trust Account under any circumstance. In the event that the Warrant Agent has a claim against the Company under this Agreement, the Warrant
Agent will pursue such claim solely against the Company and not against the property held in the Trust Account. 
 9.10. Severability.
This Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall not affect the validity or enforceability of this Agreement or of any other term or provision hereof. Furthermore, in lieu of any
such invalid or unenforceable term or provision, the parties hereto intend that there shall be added as a part of this Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and
enforceable. 
 Exhibit A – Form of Warrant Certificate 

Exhibit B – Legend 
 [Signature Page
Follows] 

 IN WITNESS WHEREOF, this Agreement has been duly executed by the parties hereto as of the
day and year first above written. 
  

			
	GLADSTONE ACQUISITION CORPORATION
		
	By:	 	  

		 	Name: Michael LiCalsi
		 	Title:   General Counsel & Secretary
	
	CONTINENTAL STOCK TRANSFER
	& TRUST COMPANY, as Warrant Agent
		
	By:	 	  

		 	Name:
		 	Title:

 [Signature Page to Warrant Agreement] 

 EXHIBIT A 

FORM OF WARRANT CERTIFICATE 

[See attached] 

 EXHIBIT B 

LEGEND 
 “THE SECURITIES REPRESENTED
BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS, AND MAY NOT BE OFFERED, SOLD, TRANSFERRED OR OTHERWISE DISPOSED OF UNLESS REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, AND ANY APPLICABLE STATE SECURITIES LAWS OR AN EXEMPTION FROM REGISTRATION IS AVAILABLE. IN ADDITION, SUBJECT TO ANY ADDITIONAL LIMITATIONS ON TRANSFER DESCRIBED IN THE LETTER AGREEMENT BY AND AMONG GLADSTONE ACQUISITION CORPORATION (THE
“COMPANY”), GLADSTONE SPONSOR, LLC AND THE OTHER PARTIES THERETO, THE SECURITIES REPRESENTED BY THIS CERTIFICATE MAY NOT BE SOLD OR TRANSFERRED PRIOR TO THE DATE THAT IS THIRTY (30) DAYS AFTER THE DATE UPON WHICH THE COMPANY COMPLETES
ITS INITIAL BUSINESS COMBINATION (AS DEFINED IN SECTION 3 OF THE WARRANT AGREEMENT REFERRED TO HEREIN) EXCEPT TO A PERMITTED TRANSFEREE (AS DEFINED IN SECTION 5.6 OF THE WARRANT AGREEMENT) WHO AGREES IN WRITING WITH THE COMPANY TO BE SUBJECT TO SUCH
TRANSFER PROVISIONS. 
 SECURITIES EVIDENCED BY THIS CERTIFICATE AND SHARES OF CLASS A COMMON STOCK OF THE COMPANY ISSUED UPON EXERCISE OF SUCH SECURITIES
SHALL BE ENTITLED TO REGISTRATION RIGHTS UNDER A REGISTRATION RIGHTS AGREEMENT TO BE EXECUTED BY THE COMPANY.”EX-10.1

 Exhibit 10.1 

[__], 2021 
 Gladstone Acquisition Corporation 

1521 Westbranch Drive, Suite 100 
 McLean, Virginia 22102 

Re: Initial Public Offering 
 Ladies and
Gentlemen: 
 This letter (this “Letter Agreement”) is being delivered to you in accordance with the Underwriting
Agreement (the “Underwriting Agreement”) entered into by and among Gladstone Acquisition Corporation, a Delaware corporation (the “Company”), and EF Hutton, division of Benchmark Investments, Inc., as
representative (the “Representative”) of the several underwriters (each, an “Underwriter” and collectively, the “Underwriters”), relating to an underwritten initial public
offering (the “Public Offering”), of 11,500,000 of the Company’s units (including up to 1,500,000 units that may be purchased to cover over-allotments, if any) (the “Units”), each comprised 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. Each Warrant entitles the holder thereof to purchase one share of Common Stock at
a price of $11.50 per share, subject to adjustment. The Units will be sold in the Public Offering pursuant to a registration statement on Form S-1 (File
No. 333-252916) and prospectus (the “Prospectus”) filed by the Company with the U.S. Securities and Exchange Commission (the “Commission”) and the Company
has applied to have the Units listed on The Nasdaq Capital Market. Certain capitalized terms used herein are defined in paragraph 11 hereof. 

In order to induce the Company and the Underwriters to enter into the Underwriting Agreement and to proceed with the Public Offering and for
other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, each of Gladstone Sponsor, LLC (the “Sponsor”) and the undersigned individuals, each of whom is a member of the
Company’s board of directors and/or management team or an advisor of the Company (each, an “Insider” and collectively, the “Insiders”), hereby agrees with the Company as follows: 

1. The Sponsor and each Insider agrees that if the Company seeks stockholder approval of a proposed Business Combination, then in connection
with such proposed Business Combination, it, he or she shall (i) vote any shares of Capital Stock owned by it, him or her in favor of any proposed Business Combination and (ii) not redeem any shares of Common Stock owned by it, him or her
in connection with such stockholder approval. If the Company engages in a tender offer in connection with any proposed Business Combination, the Sponsor and each Insider agrees that it, he or she will not seek to sell or tender any shares of Capital
Stock owned by it, him or her to the Company in connection with such tender offer. 
 2. In the event that the Company fails to consummate a
Business Combination within fifteen (15) months, the Sponsor may extend the time period by which the Company must consummate a Business Combination by an additional three (3) months for a total of 18 months. If the Sponsor elects to extend, the
Sponsor will deposit into the Trust Account (as defined below) an amount equal to 1% of the gross proceeds of the Public Offering, representing $0.10 for each share of Common Stock sold in the Public Offering on or prior to the date of the deadline.
Such payment would be in the form of a non-interest-bearing loan. Pursuant to this Letter Agreement, the Sponsor has agreed to waive its right to be repaid for such loan in the event that the Company fails to complete a Business Combination. 

The Sponsor and each Insider hereby agrees that in the event that the Company fails to consummate a Business Combination within with the
timeframe set forth in the Company’s amended and restated certificate of incorporation (as it may be amended from time to time, the “Charter”) and this Section 2 above, the Sponsor and each Insider shall take all
reasonable steps to cause the Company to (i) cease all operations except for the purpose of winding up, (ii) as promptly as reasonably possible but not more than 10 business days thereafter, subject to lawfully available funds therefor,
redeem 100% of the shares of Common Stock sold as part of the Units in the Public Offering (the “Offering Shares”), at a per-share price, payable in cash, equal to the aggregate amount
then on deposit in the Trust Account (as defined below), 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 interest to pay dissolution expenses),
divided by the number of then outstanding Offering Shares, which redemption will completely extinguish the rights of all holders of Offering Shares as stockholders (including the right to receive further liquidating distributions, if any), subject
to applicable law, and (iii) as promptly as reasonably possible following such redemption, subject to the approval of the Company’s remaining stockholders and the Company’s board of directors, dissolve and liquidate, subject in the
case of clauses (ii) and (iii) to the Company’s obligations under Delaware law to provide for claims of creditors and the requirements of other applicable law. The Sponsor and each Insider agrees not to propose any amendment to the Charter
to modify (i) the substance or timing of the ability of holders of Offering Shares to seek redemption in connection with the Company’s 

  
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initial Business Combination or amendments to the Charter prior thereto or (ii) (A) the Company’s obligation to redeem 100% of the Offering Shares if the Company does not complete its
initial Business Combination within such time set forth in the Charter or (B) with respect to any other provision relating to stockholders’ rights or pre-initial Business Combination activity, unless
the Company provides the holders of the Offering Shares with the opportunity to redeem their shares of Common Stock upon approval of any such amendment at a per-share price, payable in cash, equal to the
aggregate amount then on deposit 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, divided by the number of then outstanding Offering Shares. 

The Sponsor and each Insider acknowledges that it, he or she has no right, title, interest or claim of any kind in or to any monies held in
the Trust Account or any other asset of the Company as a result of any liquidation of the Company with respect to the Founder Shares or Private Placement Warrants held by it, him or her. The Sponsor and each Insider hereby further waives, with
respect to any shares of Common Stock held by it, him or her, if any, whether acquired now or hereafter, any redemption rights it, he or she may have in connection with the consummation of a Business Combination or amendments to the Charter prior
thereto, including, without limitation, any such rights available in the context of a stockholder vote to approve such Business Combination or a stockholder vote to approve an amendment to the Charter to modify (i) (A) the substance or timing
of the Company’s obligation to redeem 100% of the Offering Shares if the Company has not consummated a Business Combination within the time period set forth in the Charter or (B) any other provisions relating to stockholders’ rights
or pre-initial Business Combination activity or (ii) in the context of a tender offer made by the Company to purchase shares of Common Stock (although the Sponsor, the Insiders and their respective
affiliates shall be entitled to redemption and liquidation rights with respect to any Offering Shares it or they hold if the Company fails to consummate a Business Combination within the time period set forth in the Charter). 

3. During the period commencing on the effective date of the Underwriting Agreement and ending one year after such date, the Sponsor and each
Insider shall not, without the prior written consent of the Representative, (i) sell, offer to sell, contract or agree to sell, hypothecate, pledge, grant any option to purchase or otherwise dispose of or agree to dispose of, directly or
indirectly, or establish or increase a put equivalent position or liquidate or decrease a call equivalent position within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”),
and the rules and regulations of the Commission promulgated thereunder, with respect to any Units, shares of Capital Stock, Warrants or any securities convertible into, or exercisable, or exchangeable for, shares of Capital Stock owned by it, him or
her, (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any Units, shares of Capital Stock, Warrants or any securities convertible into, or exercisable,
or exchangeable for, shares of Capital Stock owned by it, him or her, whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (iii) publicly announce any intention to effect any transaction
specified in clause (i) or (ii). Each of the Insiders and the Sponsor acknowledges and agrees that, prior to the effective date of any release or waiver, of the restrictions set forth in this paragraph 3 or paragraph 7 below, the Company shall
announce the impending release or waiver by press release through a major news service at least two business days before the effective date of the release or waiver. Any release or waiver granted shall only be effective two business days after the
publication date of such press release. The provisions of this paragraph will not apply if the release or waiver is effected solely to permit a transfer not for consideration and the transferee has agreed in writing to be bound by the same terms
described in this Letter Agreement to the extent and for the duration that such terms remain in effect at the time of the transfer. 
 4. In
the event of the liquidation of the Trust Account upon the failure of the Company to consummate its initial Business Combination within the time period set forth in the Charter, the Sponsor (the “Indemnitor”) agrees to
indemnify and hold harmless the Company against any and all loss, liability, claim, damage and expense whatsoever (including, but not limited to, any and all legal or other expenses reasonably incurred in investigating, preparing or defending
against any litigation, whether pending or threatened) to which the Company may become subject as a result of any claim by (i) any third party for services rendered or products sold to the Company or (ii) any prospective target business
with which the Company has entered into a written letter of intent, confidentiality or other similar agreement or Business Combination agreement (a “Target”); provided, however, that such indemnification of the Company by the
Indemnitor shall (x) apply only to the extent necessary to ensure that such claims by a third party or a Target do not reduce the amount of funds in the Trust Account to below the lesser of (i) $10.20 per Offering Share and (ii) the actual
amount per Offering Share held in the Trust Account as of the date of the liquidation of the Trust Account, if less than $10.20 per Offering Share is then held in the Trust Account due to reductions in the value of the trust assets,

  
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less interest earned on the Trust Account which may be withdrawn to pay taxes, (y) not apply to any claims by a third party or a Target which executed a waiver of any and all rights to the
monies held in the Trust Account (whether or not such waiver is enforceable) and (z) not apply to any claims under the Company’s indemnity of the Underwriters against certain liabilities, including liabilities under the Securities Act of
1933, as amended. The Indemnitor shall have the right to defend against any such claim with counsel of its choice reasonably satisfactory to the Company if, within 15 days following written receipt of notice of the claim to the Indemnitor, the
Indemnitor notifies the Company in writing that it shall undertake such defense. 
 5. To the extent that the Underwriters do not exercise
their over-allotment option to purchase up to an additional 1,500,000 Units in full within 45 days from the date of the Prospectus (and as further described in the Prospectus), the Sponsor agrees to forfeit, at no cost, a number of Founder Shares in
the aggregate equal to 375,000 multiplied by a fraction, (i) the numerator of which is 1,500,000 minus the number of Units purchased by the Underwriters upon the exercise of their over-allotment option, and (ii) the denominator of which is
1,500,000. The forfeiture will be adjusted to the extent that the over-allotment option is not exercised in full by the Underwriters so that the Sponsor will be required to forfeit only that number of Founder Shares as is necessary so that the
Initial Stockholders will own an aggregate of 20.0% of the Company’s issued and outstanding shares of Capital Stock after the Public Offering (not including the Private Placement Warrants). 

6. The Sponsor and each Insider hereby agrees and acknowledges that: (i) the Underwriters and the Company would be irreparably injured in
the event of a breach by such Sponsor or an Insider of its, his or her obligations under paragraphs 1, 2, 3, 4, 5, 7(a), 7(b), and 9, as applicable, of this Letter Agreement (ii) monetary damages may not be an adequate remedy for such breach
and (iii) the non-breaching party shall be entitled to injunctive relief, in addition to any other remedy that such party may have in law or in equity, in the event of such breach. 

7. (a) The Sponsor and each Insider agrees that it, he or she shall not Transfer any Founder Shares (or shares of Common Stock issuable upon
conversion thereof) until the earlier to occur of (A) one-year after the completion of the Company’s initial Business Combination or (B) subsequent to the Company’s initial Business
Combination, (x) if the reported last sale price of the Common Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading day period commencing at least 150 days after the Company’s initial Business Combination, or (y) the date on which the Company completes a liquidation, merger, capital stock exchange,
reorganization or other similar transaction that results in all of the Company’s stockholders having the right to exchange their shares of Common Stock for cash, securities or other property (the “Founder Shares Lock-up Period”). 
 (b) The Sponsor and each Insider agrees that it, he or she shall not
Transfer any Private Placement Warrants or shares of Common Stock issued or issuable upon the exercise of the Private Placement Warrants, until 30 days after the completion of the initial Business Combination (the “Private Placement Units
Lock-up Period”, together with the Founder Shares Lock-up Period, the “Lock-up Periods”).

 (c) Notwithstanding the provisions set forth in paragraphs 7(a) and 7(b), Transfers of Private Placement Warrants and shares of Common
Stock issued or issuable upon the exercise or conversion of the Private Placement Warrants or the Founder Shares that are held by the Sponsor, any Insider or any of their permitted transferees (that have complied with this paragraph 7(c)), are
permitted (i) to the Company’s officers or directors, any affiliate or family member of any of the Company’s officers or directors or any members of the Sponsor or any affiliates of the Sponsor; (b) in the case of an individual,
by gift to a member of such individual’s immediate family or to a trust, the beneficiary of which is a member of such individual’s immediate family, an affiliate of such individual or to a charitable organization; (c) in the case of
an individual, by virtue of laws of descent and distribution upon death of such individual; (d) in the case of an individual, pursuant to a qualified domestic relations order; (e) by private sales or transfers made in connection with the
consummation of an initial Business Combination at prices no greater than the price at which the securities were originally purchased; (f) in the event of the Company’s liquidation prior to the completion of an initial Business
Combination; (g) by virtue of the laws of the State of Delaware or the Sponsor’s limited liability company agreement upon dissolution of the Sponsor; or (h) in the event of the Company’s liquidation, merger, capital stock
exchange, reorganization or other similar transaction which results in all of the Company’s stockholders having the right to exchange their shares of Common Stock for cash, securities or other property subsequent to the Company’s
completion of an initial Business Combination; provided, however, that in the case of clauses (a) through (e) or (g), these permitted transferees must enter into a written agreement with the Company agreeing to be bound by the transfer
restrictions herein and the other restrictions contained in this Agreement (including provisions relating to voting, the Trust Account and liquidating distributions). 
  

  
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 8. The Sponsor and each Insider represents and warrants that it, he or she has never been
suspended or expelled from membership in any securities or commodities exchange or association or had a securities or commodities license or registration denied, suspended or revoked. Each Insider’s biographical information furnished to the
Company (including any such information included in the Prospectus) is true and accurate in all respects and does not omit any material information with respect to the Insider’s background. Each Insider’s questionnaire furnished to the
Company is true and accurate in all respects. Each Insider represents and warrants that: it, he or she is not subject to or a respondent in any legal action for, any injunction,
cease-and-desist order or order or stipulation to desist or refrain from any act or practice relating to the offering of securities in any jurisdiction; it, he or she
has never been convicted of, or pleaded guilty to, any crime (i) involving fraud, (ii) relating to any financial transaction or handling of funds of another person, or (iii) pertaining to any dealings in any securities and it, he or
she is not currently a defendant in any such criminal proceeding. 
 9. Except as disclosed in the Prospectus, neither the Sponsor nor any
officer or director of the Company nor any affiliate of the Sponsor nor any affiliate of any officer or director of the Company, shall receive from the Company any finder’s fee, reimbursement, consulting fee, monies in respect of any repayment
of a loan or other compensation prior to, or in connection with any services rendered in order to effectuate, the consummation of the Company’s initial Business Combination (regardless of the type of transaction that it is), other than the
following, none of which will be made from the proceeds held in the Trust Account prior to the completion of the initial Business Combination: repayment of up to an aggregate of $300,000 in loans made to the Company by the Sponsor to cover
offering-related and organizational expenses; payment to an affiliate of the Sponsor of $10,000 per month, for up to 15 months (or up to 18 months if the period of time to complete the initial Business Combination is extended in accordance with the
Charter), for office space, utilities and secretarial and administrative support; reimbursement for any reasonable out-of-pocket expenses related to identifying,
investigating and completing an initial Business Combination; and repayment of non-interest bearing loans which may be made by the Sponsor or an affiliate of the Sponsor or certain of the Company’s
officers and directors to finance transaction costs in connection with an intended initial Business Combination, the terms of which (other than as described above) have not been determined nor have any written agreements been executed with respect
thereto. Up to $1,500,000 of such loans may be convertible into warrants, at a price of $1.00 per warrant at the option of the lender, upon consummation of the initial Business Combination. The warrants would be identical to the Private Placement
Warrants. 
 10. The Sponsor and each Insider has full right and power, without violating any agreement to which it is bound (including,
without limitation, any non-competition or non-solicitation agreement with any employer or former employer), to enter into this Letter Agreement and, as applicable, to
serve as an officer and/or director on the board of directors of the Company and hereby consents to being named in the Prospectus as an officer and/or director of the Company. 

11. As used herein, (i) “Business Combination” shall mean a merger, capital stock exchange, asset acquisition, stock
purchase, reorganization or similar business combination, involving the Company and one or more businesses; (ii) “Capital Stock” shall mean, collectively, the Common Stock and the Founder Shares; (iii) “Founder
Shares” shall mean (a) the 2,875,000 shares of the Company’s Class B common stock, par value $0.0001 per share, initially issued to the Sponsor (up to 375,000 Shares of which are subject to complete or partial forfeiture
by the Sponsor if the over-allotment option is not exercised by the Underwriters) for an aggregate purchase price of $25,000, or $0.009 per share, prior to the consummation of the Public Offering; (iv) “Initial Stockholders”
shall mean the Sponsor and any Insider that holds Founder Shares; (v) “Private Placement Warrants” shall mean the Warrants to purchase up to 4,200,000 shares of Common Stock (or up to 4,500,000 shares of Common Stock if the
over-allotment option is exercised in full) comprising the Private Placement Units; (vi) “Public Stockholders” shall mean the holders of securities issued in the Public Offering; (vii) “Trust Account”
shall mean the trust fund into which a portion of the net proceeds of the Public Offering shall be deposited; and (viii) “Transfer” shall mean the (a) sale of, offer to sell, contract or agreement to sell, hypothecate,
pledge, grant of any option to purchase or otherwise dispose of or agreement to dispose of, directly or indirectly, or establishment or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position
within the meaning of Section 16 of the Exchange Act, and the rules and regulations of the Commission promulgated thereunder with respect to, any security, (b) entry into any swap or other arrangement that transfers to another, in whole or
in part, any of the economic consequences of ownership of any security, whether any such transaction is to be settled by delivery of such securities, in cash or otherwise, or (c) public announcement of any intention to effect any transaction
specified in clause (a) or (b). 

  
 4 

 12. The Company will maintain an insurance policy or policies providing directors’ and
officers’ liability insurance, and each Director shall be covered by such policy or policies, in accordance with its or their terms, to the maximum extent of the coverage available for any of the Company’s directors or officers. 

13. This Letter Agreement constitutes the entire agreement and understanding of the parties hereto in respect of the subject matter hereof and
supersedes all prior understandings, agreements, or representations by or among the parties hereto, written or oral, to the extent they relate in any way to the subject matter hereof or the transactions contemplated hereby. This Letter Agreement may
not be changed, amended, modified or waived (other than to correct a typographical error) as to any particular provision, except by a written instrument executed by all parties hereto. 

14. No party hereto may assign either this Letter Agreement or any of its rights, interests, or obligations hereunder without the prior written
consent of the other parties. Any purported assignment in violation of this paragraph shall be void and ineffectual and shall not operate to transfer or assign any interest or title to the purported assignee. This Letter Agreement shall be binding
on the Sponsor and each Insider and their respective successors, heirs and assigns and permitted transferees. 
 15. Nothing in this Letter
Agreement shall be construed to confer upon, or give to, any person or corporation other than the parties hereto any right, remedy or claim under or by reason of this Letter Agreement or of any covenant, condition, stipulation, promise or agreement
hereof. All covenants, conditions, stipulations, promises and agreements contained in this Letter Agreement shall be for the sole and exclusive benefit of the parties hereto and their successors, heirs, personal representatives and assigns and
permitted transferees. 
 16. This Letter Agreement may be executed in any number of original or facsimile counterparts and each of such
counterparts shall for all purposes be deemed to be an original, and all such counterparts shall together constitute but one and the same instrument. 

17. This Letter Agreement shall be deemed severable, and the invalidity or unenforceability of any term or provision hereof shall not affect
the validity or enforceability of this Letter Agreement or of any other term or provision hereof. Furthermore, in lieu of any such invalid or unenforceable term or provision, the parties hereto intend that there shall be added as a part of this
Letter Agreement a provision as similar in terms to such invalid or unenforceable provision as may be possible and be valid and enforceable. 

18. This Letter 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. The parties hereto (i) all agree that any action, proceeding, claim or dispute arising out of, or relating in any way
to, this Letter Agreement shall be brought and enforced in the courts of New York City, in the State of New York, and irrevocably submit to such jurisdiction and venue, which jurisdiction and venue shall be exclusive and (ii) waive any
objection to such exclusive jurisdiction and venue or that such courts represent an inconvenient forum. 
 19. Any notice, consent or request
to be given in connection with any of the terms or provisions of this Letter 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
facsimile transmission. 
 20. This Letter Agreement shall terminate on the earlier of (i) the expiration of the Lock-up Periods or (ii) the liquidation of the Company; provided, however, that this Letter Agreement shall earlier terminate in the event that the Public Offering is not consummated and closed by December 31,
2021; provided further that paragraph 4 of this Letter Agreement shall survive such liquidation. 
 21. The Company, the Sponsor and each
Insider hereby acknowledges and agrees that the Representative on behalf of the Underwriters is a third party beneficiary of this Letter Agreement. 

  
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 [Signature Page Follows] 

  
 6 

 
			
	Sincerely,
	
	GLADSTONE SPONSOR, LLC
		
	By:	 	  

		 	Name:
		 	Title:
	
	  

	
	  

	
	  

	
	  

	
	  

	
	  

	
	  

	
	  

  

			
	Acknowledged and Agreed:
	
	GLADSTONE ACQUISITION CORPORATION
		
	By:	 	 
		 	Name: Michael LiCalsi
		 	Title: General Counsel & Secretary

  
 [Signature Page to
Letter Agreement]

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