Document:

EX-4.1

 Exhibit 4.1 

NOVUME SOLUTIONS, INC. 

WARRANT TO PURCHASE COMMON STOCK 

Warrant No.: 
 Number of Shares of Common Stock: 

Date of Issuance:               (“Issuance Date”) 

NOVUME SOLUTIONS, INC., a Delaware corporation (the “Company”), hereby certifies that, for good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, [HOLDER], the registered holder hereof or its permitted assigns (the “Holder”), is entitled, subject to the terms set forth below, to purchase from the Company, at the
Exercise Price (as defined below) then in effect, at any time or times on or after [            ], 2016 (the “Initial Exercisability Date”), but not after 11:59 p.m., New
York time, on the Expiration Date, (as defined below), [●] ([●]) fully paid nonassessable shares of Common Stock, subject to adjustment as provided herein (the “Warrant Shares”). Except as otherwise defined herein,
capitalized terms in this Warrant to Purchase Common Stock (including any Warrants to Purchase Common Stock issued in exchange, transfer or replacement hereof, this “Warrant”), shall have the meanings set forth in Section 17.

 This Warrant is issued to the Holder pursuant to and is subject to the terms and conditions of the Merger Agreement by and among the
Company, KeyStone Solutions, Inc., a Delaware corporation (“KeyStone”), Brekford Corp., a Delaware corporation and the other parties named therein dated as of February 10, 2017 (the “Merger Agreement”). Upon
the closing of the Merger Agreement (“Closing”), KeyStone became a wholly-owned subsidiary of the Company. As part of the merger consideration therefor, among other things, the Holder received this Warrant in exchange for a warrant
to purchase shares of the common stock of KeyStone, originally issued to the Holder pursuant to that certain Subscription Agreement, dated [            ], 2016, between the Company and
Holder. As of the Closing, this Warrant and the Warrant Stock are registered with the U.S. Securities and Exchange Commission (the “SEC”) on a Registration Statement on Form S-4 (the
“Registration Statement”), which became effective as of [●], 2017; however, this registration will be subject at all times to the continued effectiveness of such Registration Statement. Capitalized terms used herein and not
otherwise defined shall have the definitions ascribed to such terms in the Merger Agreement. 
 EXERCISE OF WARRANT. 

Mechanics of Exercise. Subject to the terms and conditions hereof, this Warrant may be exercised by the Holder at any time or times on
or after the Initial Exercisability Date, in whole or in part, by (i) delivery of a written notice, in the form attached hereto as Exhibit A (the “Exercise Notice”), of the Holder’s election to exercise this Warrant
and (ii) (A) payment to the Company of an amount equal to the applicable Exercise Price multiplied by the number of Warrant Shares as to which this Warrant is being exercised (the “Aggregate Exercise Price”) in cash by wire
transfer of immediately available funds or (B) if the provisions of Section 1(d) are applicable, by notifying the Company that this Warrant is being exercised pursuant to a Cashless Exercise (as defined in Section 1(c)). The Holder
shall not be required to deliver the original Warrant in order to effect an exercise hereunder. Execution and delivery of the Exercise Notice with respect to less than all of the Warrant Shares shall have the same effect as cancellation of the
original Warrant and issuance of a new Warrant evidencing the right to purchase the remaining number of Warrant Shares. On or before the first (1st) Trading Day following the date on which
the Company has received the Exercise Notice, the Company shall transmit by facsimile or e-mail an acknowledgment of confirmation of receipt of the Exercise Notice to the Holder and the Company’s transfer
agent (the “Transfer Agent”). On or before the third (3rd) Trading Day following the date on which the Company has received the Exercise Notice, so long as the Holder delivers the Aggregate Exercise Price (or notice of a
Cashless Exercise) on or prior to the second (2nd) Trading Day following the date on which the Company has received the Exercise Notice (the “Share Delivery Date”) (provided that if the Aggregate Exercise Price has not been
delivered by such date, the Share Delivery Date shall be one (1) Trading Day after the Aggregate Exercise Price (or notice of a Cashless Exercise) is delivered), the Company shall (X) provided that the Transfer Agent is participating in
The Depository Trust Company (“DTC”) Fast Automated Securities Transfer Program, credit such aggregate number of Warrant Shares to which the Holder is entitled pursuant to such exercise to the Holder’s or its designee’s
balance account with DTC through its Deposit / Withdrawal At Custodian system, or (Y) if the Transfer Agent is not participating in the DTC Fast Automated Securities Transfer Program, issue and dispatch by overnight courier to the

 
address as specified in the Exercise Notice, a certificate, registered in the Company’s share register in the name of the Holder or its designee, for the number of Warrant Shares to which
the Holder is entitled pursuant to such exercise. The Company shall be responsible for all fees and expenses of the Transfer Agent and all fees and expenses with respect to the issuance of Warrant Shares via DTC, if any. Upon delivery of the
Exercise Notice and payment of the Aggregate Exercise Price, the Holder shall be deemed for all corporate purposes to have become the holder of record of the Warrant Shares with respect to which this Warrant has been exercised, irrespective of the
date such Warrant Shares are credited to the Holder’s DTC account or the date of delivery of the certificates evidencing such Warrant Shares, as the case may be. If this Warrant is submitted in connection with any exercise pursuant to this
Section 1(a) and the number of Warrant Shares represented by this Warrant submitted for exercise is greater than the number of Warrant Shares being acquired upon an exercise, then the Company shall as soon as practicable and in no event later
than three (3) Trading Days after any exercise and at its own expense, issue a new Warrant (in accordance with Section 7(d)) representing the right to purchase the number of Warrant Shares issuable immediately prior to such exercise under
this Warrant, less the number of Warrant Shares with respect to which this Warrant is exercised. No fractional Warrant Shares are to be issued upon the exercise of this Warrant, but rather the number of Warrant Shares to be issued shall be rounded
up to the nearest whole number. 
 Exercise Price. For purposes of this Warrant, “Exercise Price” means $1.03 per
Warrant Share, subject to adjustment as provided herein. 
 Cashless Exercise. Notwithstanding anything contained herein to the
contrary, if at any time there is not a current, valid and effective registration statement covering the issuance of the Warrant Shares that are the subject of the Exercise Notice, the Holder may, in its sole discretion, exercise this Warrant in
whole or in part and, in lieu of making the cash payment otherwise contemplated to be made to the Company upon such exercise in payment of the Aggregate Exercise Price, elect instead to receive upon such exercise the “Net Number” of shares
of Common Stock determined according to the following formula (a “Cashless Exercise”): 
  

	
	 Net Number = (A × B) - (A × C)

	                                      
      D

 For purposes of the foregoing formula: 

 

			
	A    =    	 	the total number of shares with respect to which this Warrant is then being exercised.
		
	B    =    	 	the arithmetic average of the Closing Sale Prices of the Common Stock for the five (5) consecutive Trading Days ending on the date immediately preceding the date of the Exercise Notice.
		
	C    =    	 	the Exercise Price then in effect for the applicable Warrant Shares at the time of such exercise.
		
	D    =    	 	the Closing Sale Price of the Common Stock on the date of the Exercise Notice.

 If Warrant Shares are issued pursuant to such a Cashless Exercise, the parties acknowledge and agree that in
accordance with Section 3(a)(9) of the Securities Act, the Warrant Shares shall take on the registered characteristics of the Warrants being exercised. The Company agrees not to take any position contrary to this Section 2(c), subject
to any change in applicable law, regulation or guidance. 
 Disputes. In the case of a dispute as to the determination of the
Exercise Price or the arithmetic calculation of the Warrant Shares, the Company shall promptly issue to the Holder the number of Warrant Shares that are not disputed and resolve such dispute in accordance with Section 12. 

Insufficient Authorized Shares. If at any time while this Warrant remains outstanding the Company does not have a sufficient number of
authorized and unreserved shares of Common Stock to satisfy its obligation to reserve for issuance upon exercise of this Warrant at least a number of shares of Common Stock equal to the number of shares of Common Stock as shall from time to time be
necessary to effect the exercise of all of this Warrant then outstanding (the “Required Reserve Amount” and the failure to have such sufficient number of authorized and unreserved shares of Common Stock, an “Authorized Share
Failure”), then the Company shall immediately take all action necessary to increase the Company’s authorized shares of Common Stock to an amount sufficient to allow the Company to reserve the Required Reserve Amount for this Warrant
then outstanding. 

  
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 ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES. The Exercise Price and the
number of Warrant Shares shall be adjusted from time to time as follows: 
 (a) Voluntary Adjustment By Company. The Company may at
any time during the term of this Warrant, with the prior written consent of the Holder, reduce the then current Exercise Price to any amount and for any period of time deemed appropriate by the Board of Directors of the Company. 

Adjustment Upon Subdivision or Combination of Common Stock. If the Company at any time on or after the Issuance Date subdivides (by
any stock split, stock dividend, recapitalization or otherwise) one or more classes of its outstanding Common Stock into a greater number of shares, the Exercise Price in effect immediately prior to such subdivision will be proportionately reduced
and the number of Warrant Shares will be proportionately increased. If the Company at any time on or after the Issuance Date combines (by combination, reverse stock split or otherwise) one or more classes of its outstanding Common Stock into a
smaller number of shares, the Exercise Price in effect immediately prior to such combination will be proportionately increased and the number of Warrant Shares will be proportionately decreased. Any adjustment under this Section 2(b) shall
become effective at the close of business on the date the subdivision or combination becomes effective. 
 RIGHTS UPON DISTRIBUTION OF
ASSETS. If the Company shall declare or make any dividend or other distribution of its assets (or rights to acquire its assets) to holders of Common Stock, by way of return of capital or otherwise (including, without limitation, any distribution
of cash, stock or other securities, property, options, evidence of indebtedness or any other assets by way of a dividend, spin off, reclassification, corporate rearrangement, scheme of arrangement or other similar transaction) (a
“Distribution”), at any time after the issuance of this Warrant, then, in each such case, the Holder shall be entitled to participate in such Distribution to the same extent that the Holder would have participated therein if the
Holder had held the number of shares of Common Stock acquirable upon complete exercise of this Warrant (without regard to any limitations or restrictions on exercise of this Warrant) immediately before the date of which a record is taken for such
Distribution, or, if no such record is taken, the date as of which the record holders of Common Stock are to be determined for the participation in such Distribution. 

FUNDAMENTAL TRANSACTIONS; COMPANY’S CALL RIGHT. 

(b) Fundamental Transactions. The Company shall not enter into or be party to a Fundamental Transaction unless the Successor Entity
assumes in writing all of the obligations of the Company under this Warrant in accordance with the provisions of this Section 4(a) pursuant to written agreements, including agreements to deliver to the Holder in exchange for such Warrant a
security of the Successor Entity evidenced by a written instrument substantially similar in form and substance to this Warrant, including, without limitation, an adjusted exercise price equal to the value for the Common Stock reflected by the terms
of such Fundamental Transaction, and exercisable for a corresponding number of shares of capital stock equivalent to the Common Stock acquirable and receivable upon exercise of this Warrant prior to such Fundamental Transaction, and with an exercise
price which applies the exercise price hereunder to such shares of capital stock (but taking into account the relative value of the Common Stock pursuant to such Fundamental Transaction and the value of such shares of capital stock, such adjustments
to the number of shares of capital stock and such exercise price being for the purpose of protecting the economic value of this Warrant immediately prior to the occurrence or consummation of such Fundamental Transaction). Upon the occurrence or
consummation of any Fundamental Transaction, and it shall be a required condition to the occurrence or consummation of any Fundamental Transaction that, the Company and the Successor Entity or Successor Entities, (i) jointly and severally,
shall succeed to, and the Company shall cause any Successor Entity or Successor Entities to jointly and severally succeed to, and be added to the term “Company” under this Warrant (so that from and after the date of such Fundamental
Transaction, each and every provision of this Warrant referring to the “Company” shall refer instead to each of the Company and the Successor Entity or Successor Entities, jointly and severally), and the Company and the Successor Entity or
Successor Entities, jointly and severally, may exercise every right and power of the Company prior thereto and shall assume all of the obligations of the Company prior thereto under this Warrant with the same effect as if the Company and such
Successor Entity or Successor Entities, jointly and severally, had been named as the Company in this Warrant and (ii) shall deliver to the Holder confirmation that there shall be issued upon exercise of this Warrant at any time after the
occurrence or consummation of the Fundamental Transaction, Common Stock, Successor Capital Stock or, in lieu of the shares of Common Stock or Successor Capital Stock (or other securities, cash, assets or other property purchasable upon the exercise
of this Warrant prior to such Fundamental Transaction), such shares of stock, securities, cash, assets or any 

  
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other property whatsoever (including warrants or other purchase or subscription rights), which for purposes of clarification may continue to be shares of Common Stock, if any, that the Holder
would have been entitled to receive upon the happening of such Fundamental Transaction or the record, eligibility or other determination date for the event resulting in such Fundamental Transaction, had this Warrant been exercised immediately prior
to such Fundamental Transaction or the record, eligibility or other determination date for the event resulting in such Fundamental Transaction as adjusted in accordance with the provisions of this Warrant. In addition to and not in substitution for
any other rights hereunder, prior to the occurrence or consummation of any Fundamental Transaction pursuant to which holders of Common Stock are entitled to receive securities, cash, assets or other property with respect to or in exchange for Common
Stock (a “Corporate Event”), the Company shall make appropriate provision to insure that, and any applicable Successor Entity or Successor Entities shall ensure that, and it shall be a required condition to the occurrence or
consummation of such Corporate Event that, the Holder will thereafter have the right to receive upon exercise of this Warrant at any time after the occurrence or consummation of the Corporate Event, Common Stock or Successor Capital Stock or, if so
elected by the Holder, in lieu of the Common Stock (or other securities, cash, assets or other property) purchasable upon the exercise of this Warrant prior to such Corporate Event (but not in lieu of such items still issuable under Section 3,
which shall continue to be receivable on the Common Stock or on the such shares of stock, securities, cash, assets or any other property otherwise receivable with respect to or in exchange for Common Stock), such shares of stock, securities, cash,
assets or any other property whatsoever (including warrants or other purchase or subscription rights and any Common Stock) which the Holder would have been entitled to receive upon the occurrence or consummation of such Corporate Event or the
record, eligibility or other determination date for the event resulting in such Corporate Event, had this Warrant been exercised immediately prior to such Corporate Event or the record, eligibility or other determination date for the event resulting
in such Corporate Event. Provision made pursuant to the preceding sentence shall be in a form and substance reasonably satisfactory to the Holder. The provisions of this Section 4(a) shall apply similarly and equally to successive Fundamental
Transactions and Corporate Events. 
 (c) Subject to the terms and conditions set forth herein, and providing that there is an effective
registration statement registering the shares of Common Stock issuable upon exercise of this Warrant, on or before the Expiration Date, upon twenty (20) days prior written notice to the Holder (each, a “Call Notice”) following
the date on which the volume weighted average price of the Company’s Common Stock equals or exceeds $2.06 per share for twenty (20) consecutive Trading Days, as may be adjusted for stock splits, stock dividends and similar corporate
events, and the daily average volume of the Common Stock during those twenty (20) Trading Days is at least 19,399 shares, the Company shall have the right to call any or all of the Warrants at a call price of $0.01 per Warrant (the
“Call Price”). Warrant holders shall have the period from the date of the Call Notice until 5 p.m., Eastern time, on the twentieth (20th) day following the Call Notice (the “Call Date”) to exercise the Warrant
pursuant to the terms hereof. Any Warrants which have been called but remain unexercised by the Call Date shall automatically terminate and no longer entitle the Holder to exercise such Warrant or to receive any consideration therefor, other than
the Call Price. For any Warrants which are not exercised by the Call Date, the Company shall promptly as possible following the Call Date pay the Call Price to the Holder of any Warrants which have been called and not exercised. 

NONCIRCUMVENTION. The Company hereby covenants and agrees that the Company will not, by amendment of its Certificate of Incorporation
or Bylaws, or through any reorganization, transfer of assets, consolidation, merger, scheme of arrangement, dissolution, issue or sale of securities, or any other voluntary action, avoid or seek to avoid the observance or performance of any of the
terms of this Warrant, and will at all times in good faith carry out all of the provisions of this Warrant and take all action as may be required to protect the rights of the Holder hereunder. Without limiting the generality of the foregoing, the
Company shall (i) not increase the par value of any shares of Common Stock receivable upon the exercise of this Warrant above the Exercise Price then in effect, (ii) take all such actions as may be necessary or appropriate in order that
the Company may validly and legally issue fully paid and nonassessable shares of Common Stock upon the exercise of this Warrant, and (iii) take all action necessary to reserve and keep available out of its authorized and unissued Common Stock,
solely for the purpose of effecting the exercise of this Warrant, the number of shares of Common Stock as shall from time to time be necessary to effect the exercise of this Warrant then outstanding (without regard to any limitations on exercise).

 WARRANT HOLDER NOT DEEMED A STOCKHOLDER. Except as otherwise specifically provided herein, the Holder, solely in such
Person’s capacity as a holder of this Warrant, shall not be entitled to vote or receive dividends or be deemed the holder of share capital of the Company for any purpose, nor shall anything 

  
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contained in this Warrant be construed to confer upon the Holder, solely in such Person’s capacity as the Holder of this Warrant, any of the rights of a stockholder of the Company or any
right to vote, give or withhold consent to any corporate action (whether any reorganization, issue of stock, reclassification of stock, consolidation, merger, conveyance or otherwise), receive notice of meetings, receive dividends or subscription
rights, or otherwise, prior to the issuance to the Holder of the Warrant Shares which such Person is then entitled to receive upon the due exercise of this Warrant. In addition, nothing contained in this Warrant shall be construed as imposing any
liabilities on the Holder to purchase any securities (upon exercise of this Warrant or otherwise) or as a stockholder of the Company, whether such liabilities are asserted by the Company or by creditors of the Company. Notwithstanding this
Section 6, the Company shall provide the Holder with copies of the same notices and other information given to the stockholders of the Company generally, contemporaneously with the giving thereof to the stockholders. 

REISSUANCE OF WARRANTS. 

Transfer of Warrant. If this Warrant is to be transferred, the Holder shall surrender this Warrant to the Company, whereupon the
Company will forthwith issue and deliver upon the order of the Holder a new Warrant (in accordance with Section 7(d)), registered as the Holder may request, representing the right to purchase the number of Warrant Shares being transferred by
the Holder and, if less than the total number of Warrant Shares then underlying this Warrant is being transferred, a new Warrant (in accordance with Section 7(d)) to the Holder representing the right to purchase the number of Warrant Shares not
being transferred. 
 Lost, Stolen or Mutilated Warrant. Upon receipt by the Company of evidence reasonably satisfactory to the
Company of the loss, theft, destruction or mutilation of this Warrant, and, in the case of loss, theft or destruction, of any indemnification undertaking by the Holder to the Company in customary form and, in the case of mutilation, upon surrender
and cancellation of this Warrant, the Company shall execute and deliver to the Holder a new Warrant (in accordance with Section 7(d)) representing the right to purchase the Warrant Shares then underlying this Warrant. 

Exchangeable for Multiple Warrants. This Warrant is exchangeable, upon the surrender hereof by the Holder at the principal office of
the Company, for a new Warrant or Warrants (in accordance with Section 7(d)) representing in the aggregate the right to purchase the number of Warrant Shares then underlying this Warrant, and each such new Warrant will represent the right to
purchase such portion of such Warrant Shares as is designated by the Holder at the time of such surrender. 
 Issuance of New
Warrants. Whenever the Company is required to issue a new Warrant pursuant to the terms of this Warrant, such new Warrant (i) shall be of like tenor with this Warrant, (ii) shall represent, as indicated on the face of such new Warrant,
the right to purchase the Warrant Shares then underlying this Warrant (or in the case of a new Warrant being issued pursuant to Section 7(a) or Section 7(c), the Warrant Shares designated by the Holder which, when added to the number of
shares of Common Stock underlying the other new Warrants issued in connection with such issuance, does not exceed the number of Warrant Shares then underlying this Warrant), (iii) shall have an issuance date, as indicated on the face of such
new Warrant which is the same as the Issuance Date, and (iv) shall have the same rights and conditions as this Warrant. 

NOTICES. Any notice required or permitted pursuant to this Warrant shall be in writing and shall be deemed sufficient upon receipt,
when delivered personally or sent by courier, overnight delivery service or confirmed facsimile, or forty-eight hours after being deposited in the regular mail, as certified or registered mail (airmail if sent internationally), with postage prepaid,
addressed (a) if to the Holder, to the address of the Holder most recently furnished in writing to the Company and (b) if to the Company, to the address set forth below or subsequently modified by written notice to the Holder. The Company
shall provide the Holder with prompt written notice of all actions taken pursuant to this Warrant, including in reasonable detail a description of such action and the reason therefor. Without limiting the generality of the foregoing, the Company
will give written notice to the Holder (i) immediately upon any adjustment of the Exercise Price, setting forth in reasonable detail, and certifying, the calculation of such adjustment and (ii) at least fifteen (15) days prior to the
date on which the Company closes its books or takes a record (A) with respect to any dividend or distribution upon the Common Stock, (B) with respect to any grants, issuances or sales of any Options, Convertible Securities or rights to
purchase stock, warrants, securities or other property to holders of Common Stock or (C) for determining rights to vote with respect to any Fundamental Transaction, dissolution or liquidation; provided in each case that such information
shall be made known to the public prior to or in conjunction with such notice being provided to the Holder. It is expressly understood and agreed that the time of exercise specified by the Holder in each Exercise Notice shall be definitive and may
not be disputed or challenged by the Company. 

  
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 AMENDMENT AND WAIVER. Except as otherwise provided herein, the provisions of this Warrant
may be amended or waived and the Company may take any action herein prohibited, or omit to perform any act herein required to be performed by it, only if the Company has obtained the written consent of the Holder. 

GOVERNING LAW; JURISDICTION; JURY TRIAL. This Warrant shall be governed by and construed and enforced in accordance with, and all
questions concerning the construction, validity, interpretation and performance of this Warrant shall be governed by, the internal laws of the State of New York, without giving effect to any choice of law or conflict of law provision or rule
(whether of the State of New York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. The Company hereby irrevocably submits to the exclusive jurisdiction of the state and
federal courts sitting in The City of New York, Borough of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably waives, and agrees
not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that the venue of such suit, action or
proceeding is improper. The Company hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof to the Company at the address set forth on the signature
page hereto and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. Nothing
contained herein shall be deemed or operate to preclude the Holder from bringing suit or taking other legal action against the Company in any other jurisdiction to collect on the Company’s obligations to the Holder, to realize on any collateral
or any other security for such obligations, or to enforce a judgment or other court ruling in favor of the Holder. THE COMPANY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY
DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS WARRANT OR ANY TRANSACTION CONTEMPLATED HEREBY. 
 HEADINGS. The
headings used in this Warrant are for convenience of reference only and shall not, for any purpose, form part of, or affect the interpretation of, this Warrant. 

DISPUTE RESOLUTION. In the case of a dispute as to the determination of the Exercise Price or the arithmetic calculation of the
Warrant Shares, the Company shall submit the disputed determinations or arithmetic calculations via facsimile within two (2) Business Days of receipt of the Exercise Notice giving rise to such dispute, as the case may be, to the Holder. If the
Holder and the Company are unable to agree upon such determination or calculation of the Exercise Price or the Warrant Shares within three (3) Business Days of such disputed determination or arithmetic calculation being submitted to the Holder,
then the Company shall, within two (2) Business Days submit via facsimile (a) the disputed determination of the Exercise Price to an independent, reputable investment bank selected by the Company and approved by the Holder or (b) the
disputed arithmetic calculation of the Warrant Shares to the Company’s independent, outside accountant. The Company shall cause at its expense the investment bank or the accountant, as the case may be, to perform the determinations or
calculations and notify the Company and the Holder of the results no later than ten (10) Business Days from the time it receives the disputed determinations or calculations. Such investment bank’s or accountant’s determination or
calculation, as the case may be, shall be binding upon all parties absent demonstrable error. 
 REMEDIES, OTHER OBLIGATIONS, BREACHES
AND INJUNCTIVE RELIEF. The remedies provided in this Warrant shall be cumulative and in addition to all other remedies available under this Warrant, at law or in equity (including a decree of specific performance and/or other injunctive relief),
and nothing herein shall limit the right of the Holder to pursue actual damages for any failure by the Company to comply with the terms of this Warrant. The Company acknowledges that a breach by it of its obligations hereunder will cause irreparable
harm to the Holder and that the remedy at law for any such breach may be inadequate. The Company therefore agrees that, in the event of any such breach or threatened breach, the holder of this Warrant shall be entitled, in addition to all other
available remedies, to an injunction restraining any breach, without the necessity of showing economic loss and without any bond or other security being required. 

  
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 TRANSFER. This Warrant and the Warrant Shares may be offered for sale, sold, transferred,
pledged or assigned without the consent of the Company. 
 SEVERABILITY. If any provision of this Warrant is prohibited by law or
otherwise determined to be invalid or unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent that it would be valid and
enforceable, and the invalidity or unenforceability of such provision shall not affect the validity of the remaining provisions of this Warrant so long as this Warrant as so modified continues to express, without material change, the original
intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties or
the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect
of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s). 
 DISCLOSURE. Upon receipt or
delivery by the Company of any notice in accordance with the terms of this Warrant, unless the Company has in good faith determined that the matters relating to such notice do not constitute material, nonpublic information relating to the Company or
its subsidiaries, the Company shall within one (1) Business Day after any such receipt or delivery publicly disclose such material, nonpublic information on a Current Report on Form 8-K or otherwise. In
the event that the Company believes that a notice contains material, nonpublic information relating to the Company or its subsidiaries, the Company so shall indicate to such Holder contemporaneously with delivery of such notice, and in the absence
of any such indication, the Holder shall be allowed to presume that all matters relating to such notice do not constitute material, nonpublic information relating to the Company or its subsidiaries. 

CERTAIN DEFINITIONS. For purposes of this Warrant, the following terms shall have the following meanings: 

“Bloomberg” means Bloomberg Financial Markets. 

“Business Day” means any day other than Saturday, Sunday or other day on which commercial banks in The City of New York are
authorized or required by law to remain closed. 
 “Closing Bid Price” and “Closing Sale Price” means,
for any security as of any date, the last closing bid price and last closing trade price, respectively, for such security on the Principal Market, as reported by Bloomberg, or, if the Principal Market begins to operate on an extended hours basis and
does not designate the closing bid price or the closing trade price, as the case may be, then the last bid price or the last trade price, respectively, of such security prior to 4:00 p.m., New York time, as reported by Bloomberg, or, if the
Principal Market is not the principal securities exchange or trading market for such security, the last closing bid price or last trade price, respectively, of such security on the principal securities exchange or trading market where such security
is listed or traded as reported by Bloomberg, or if the foregoing do not apply, the last closing bid price or last trade price, respectively, of such security in the
over-the-counter market on the electronic bulletin board for such security as reported by Bloomberg, or, if no closing bid price or last trade price, respectively, is
reported for such security by Bloomberg, the average of the bid prices, or the ask prices, respectively, of any market makers for such security as reported in the OTC Link or “pink sheets” by OTC Markets Group Inc. (formerly Pink OTC
Markets Inc.). If the Closing Bid Price or the Closing Sale Price cannot be calculated for a security on a particular date on any of the foregoing bases, the Closing Bid Price or the Closing Sale Price, as the case may be, of such security on such
date shall be the fair market value as mutually determined by the Company and the Holder. If the Company and the Holder are unable to agree upon the fair market value of such security, then such dispute shall be resolved pursuant to Section 12.
All such determinations to be appropriately adjusted for any stock dividend, stock split, stock combination, reclassification or other similar transaction during the applicable calculation period. 

“Common Stock” means (i) the Company’s Common Stock, par value $0.0001 per share, and (ii) any share capital
into which such Common Stock shall have been changed or any share capital resulting from a reclassification of such Common Stock. 

“Convertible Securities” means any stock or securities (other than Options) directly or indirectly convertible into or
exercisable or exchangeable for Common Stock. 

  
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 “Eligible Market” means the Principal Market, the NYSE MKT LLC, The NASDAQ
Global Select Market, The NASDAQ Capital Market, The NASDAQ Global Market or The New York Stock Exchange, Inc. 
 “Expiration
Date” means the date eighty-four (84) months after the Initial Exercisability Date or, if such date falls on a day other than a Business Day or on which trading does not take place on the Principal Market (a
“Holiday”), the next day that is not a Holiday. 
 “Fundamental Transaction” means (i) a merger or
consolidation of the Company into or with another corporation in which the stockholders of the Company immediately prior to the consummation of such transaction shall own less than 50% of the voting securities or less than 50% of the voting power of
the surviving corporation (or the parent corporation of the surviving corporation where the surviving corporation is directly or indirectly wholly-owned by the parent corporation) immediately following the consummation of such transaction,
(ii) any sale or other transfer, in one transaction or a series of related transactions, of fifty percent (50%) or more of the outstanding voting stock of the Company, or (iii) the consummation of the sale, transfer or lease
(including by merger or consolidation of one or more subsidiaries or otherwise, but not including a transfer or lease by pledge or mortgage to a bona fide lender) of all or substantially all of (A) the assets of the Company or (B) the
assets of the Company and/or one or more subsidiaries constituting all or substantially all of the assets of the Company (determined on a consolidated basis with the Company and all of its subsidiaries). 

“Options” means any rights, warrants or options to subscribe for or purchase Common Stock or Convertible Securities. 

“Parent Entity” of a Person means an entity that, directly or indirectly, controls the applicable Person, including such
entity whose Common Stock or common stock or equivalent equity security is quoted or listed on an Eligible Market, or, if there is more than one such Person or such entity, such Person or entity with the largest public market capitalization as of
the date of consummation of the Fundamental Transaction. 
 “Person” means an individual, a limited liability company, a
partnership, a joint venture, a corporation, a trust, an unincorporated organization, any other entity and a government or any department or agency thereof. 

“Principal Market” means the OTCQX. 

“Successor Entity” means one or more Person or Persons (or, if so elected by the Holder, the Company or Parent Entity)
formed by, resulting from or surviving any Fundamental Transaction or one or more Person or Persons (or, if so elected by the Holder, the Company or the Parent Entity) with which such Fundamental Transaction shall have been entered into. 

“Trading Day” means any day on which the Common Stock is traded on the Principal Market, or, if the Principal Market is not
the principal trading market for the Common Stock, then on the principal securities exchange or securities market on which the Common Stock are then traded; provided that “Trading Day” shall not include any day on which the Common
Stock are scheduled to trade on such exchange or market for less than 4.5 hours or any day that the Common Stock are suspended from trading during the final hour of trading on such exchange or market (or if such exchange or market does not designate
in advance the closing time of trading on such exchange or market, then during the hour ending at 4:00:00 p.m., New York time). 

[Signature Page Follows] 

  
 8 

 IN WITNESS WHEREOF, the Company has caused this Warrant to Purchase Common Stock to be
duly executed as of the Issuance Date set out above. 
  

			
	NOVUME SOLUTIONS, INC.
		
	By:	 	  

	Name:	 	Robert A. Berman
	Title:	 	Chief Executive Officer

  

			
	Address:	 	14420 Albemarle Point Place, Suite 200, Chantilly, VA 20151
		
	Copy To:	 	Morris DeFeo
		 	Crowell & Moring, LLP
		 	1001 Pennsylvania Avenue NW Washington, D.C. 20004

  
 9 

 EXHIBIT A 

EXERCISE NOTICE 
 TO BE
EXECUTED BY THE REGISTERED HOLDER TO EXERCISE THIS 
 WARRANT TO PURCHASE COMMON STOCK 

NOVUME SOLUTIONS, INC. 

The undersigned holder hereby exercises the right to purchase
                     of the Common Stock (“Warrant Shares”) of NOVUME SOLUTIONS, INC., a Delaware corporation (the
“Company”), evidenced by the attached Warrant to Purchase Common Stock (the “Warrant”). Capitalized terms used herein and not otherwise defined shall have the respective meanings set forth in the Warrant. 

1. Form of Exercise Price. The Holder intends that payment of the Exercise Price shall be made as: 

 

			
	a “Cash Exercise” with respect to	  	Warrant Shares; and/or
		
	a “Cashless Exercise” with respect to	  	Warrant Shares.

 2. Payment of Exercise Price. In the event that the holder has elected a Cash Exercise with respect to some or
all of the Warrant Shares to be issued pursuant hereto, the holder shall pay the Aggregate Exercise Price in the sum of $         to the Company in accordance with the terms of the Warrant. 

3. Delivery of Warrant Shares. The Company shall deliver to the holder
                     Warrant Shares in accordance with the terms of the Warrant. 

 

			
	Date:             ,         
	
	  

	Name of Holder
		
	By:	 	
                     
                                         
             

		 	Name:
		 	Title:

  
 10EX-4.2

 Exhibit 4.2 
  

			
	Warrant No. C-1	  	Date of Issuance: March 16, 2016

 NOVUME SOLUTIONS, INC. 

Common Stock Purchase Warrant 

Novume Solutions, Inc., (the “Company”), for value received, hereby certifies that Avon Road Partners, L.P. (the
“Registered Holder”), is entitled, subject to the terms set forth below, to purchase from the Company, at any time after the date hereof and on or before the Expiration Date (as defined in Section 8 below) shares of the
Company’s Common Stock (“Common Stock”) at an exercise price per share (the “Exercise Price”) equal to $1.03 (subject to adjustment as provided herein). The shares of stock issuable upon exercise of this Common
Stock Purchase Warrant (the “Warrant”) are referred to hereinafter as the “Warrant Stock”. 
 This Warrant
is issued to the Registered Holder pursuant to and is subject to the terms and conditions of the Merger Agreement by and among the Company, KeyStone Solutions, Inc., a Delaware corporation (“KeyStone”), Brekford Corp., a Delaware
corporation and the other parties named therein dated as of February 10, 2017 (the “Merger Agreement”). Upon the Closing of the Merger Agreement (“Closing”), KeyStone became a wholly-owned subsidiary of the
Company. As part of the merger consideration therefor, among other things, the Registered Holder received this Warrant in exchange for a warrant to purchase shares of the common stock of KeyStone, originally issued to the pursuant to that certain
pursuant to that certain Subordinated Note and Warrant Purchase Agreement between the Company and the purchasers named therein dated as of March 16, 2016. As of the Closing, this Warrant and the Warrant Stock are registered with the U.S.
Securities and Exchange Commission (the “SEC”) on a Registration Statement on Form S-4 (the “Registration Statement”), which became effective as of [●], 2017; however,
this registration will be subject at all times to the continued effectiveness of such Registration Statement. Capitalized terms used herein and not otherwise defined shall have the definitions ascribed to such terms in the Merger Agreement. 

1. Number of Shares. Subject to the terms and conditions hereinafter set forth, the Registered Holder is entitled, upon
surrender of this Warrant, to purchase from the Company 121,244 shares of Common Stock (subject to adjustment as provided herein).  

2. Exercise. 

(a) This Warrant may be exercised by the Registered Holder, in whole or in part, by surrendering this Warrant, with the purchase/exercise form
appended hereto as Exhibit A (the “Exercise Notice”) duly executed by such Registered Holder, at the principal office of the Company, or at such other office or agency as the Company may designate,
accompanied by payment in full of the aggregate Exercise Price payable in respect of the number of shares of Warrant Stock purchased upon such exercise (the “Exercise Price”). The Exercise Price may be paid by cash, check, wire
transfer, or by the surrender of promissory notes or other instruments representing indebtedness of the Company to the Registered Holder. 

(b) Effective Time of Exercise. Each exercise of this Warrant shall be deemed to have been effected immediately prior to
the close of business on the day on which this Warrant shall have been surrendered to the Company as provided in Section 2(a) above. At such time, the person or persons in whose name or names any certificates for Warrant Stock shall be issuable
upon such exercise as provided in Section 2(d) below shall be deemed to have become the holder or holders of record of the Warrant Stock to be represented by such certificates. 

(c) Net Issue Exercise. Notwithstanding anything contained herein to the contrary, if at any time there is not a
current, valid and effective registration statement covering the issuance of the Warrant Shares that are the subject of the Exercise Notice, the Holder may, in its sole discretion, exercise this Warrant in whole or in part and, in lieu of making the
cash payment otherwise contemplated to be made to the Company upon such exercise in 

 
payment of the Aggregate Exercise Price, elect instead to receive upon such exercise the “Net Number” of shares of Common Stock determined according to the following formula (a
“Cashless Exercise”): 
  

	
	 Net Number = (A × B) - (A × C)

	
                   
                          D

 For purposes of the foregoing formula: 

 

			
	A    =    	 	the total number of shares of Warrant Stock with respect to which this Warrant is then being exercised.
		
	 B    =    
	 	the arithmetic average of the Closing Sale Prices of the Common Stock for the five (5) consecutive Trading Days ending on the date immediately preceding the date of the Exercise Notice.
		
	 C    =    
	 	the Exercise Price then in effect for the applicable shares of Warrant Stock at the time of such exercise.
		
	D    =    	 	the Closing Sale Price of the Common Stock on the date of the Exercise Notice.

 If Warrant Stock is issued pursuant to such a Cashless Exercise, the parties acknowledge and agree that in
accordance with Section 3(a)(9) of the Securities Act, the Warrant Stock shall take on the registered characteristics of the Warrants being exercised. The Company agrees not to take any position contrary to this Section 2(c), subject
to any change in applicable law, regulation or guidance. 
 (d) Delivery to Registered Holder. As soon as practicable
after the exercise of this Warrant in whole or in part, and in any event within ten days thereafter, the Company at its expense will cause to be issued in the name of, and delivered to, the Registered Holder: 

(i) a certificate or certificates for the number of shares of Warrant Stock to which such Registered Holder shall be entitled, and 

(ii) in case such exercise is in part only, a new warrant or warrants (dated the date hereof) of like tenor and with the same date, calling
in the aggregate on the face or faces thereof for the number of shares of Warrant Stock equal (without giving effect to any adjustment therein) to the number of such shares called for on the face of this Warrant minus the number of such shares
purchased by the Registered Holder upon such exercise as provided in Section 2(a) or 2(c) above (without giving effect to any adjustment thereto). 

(e) Investment Representation Statement. Unless the rights under this Warrant are exercised pursuant to an effective
registration statement under the Securities Act that includes the Warrant Stock with respect to which the Warrant was exercised, it shall be a condition to any exercise of the rights under this Warrant that the Registered Holder shall have confirmed
to the satisfaction of the Company in writing, that the Warrant Stock so purchased is being acquired solely for the Registered Holder’s own account and not as a nominee for any other party, for investment and not with a view toward distribution
or resale and that the Registered Holder shall have confirmed such other matters related thereto as may be reasonably requested by the Company. 

3. Adjustments. 

(a) Stock Splits and Dividends. If outstanding shares of the Company’s Common Stock shall be subdivided into a
greater number of shares or a dividend in Common Stock shall be paid in respect of Common Stock, the Exercise Price in effect immediately prior to such subdivision or at the record date of such dividend shall simultaneously with the effectiveness of
such subdivision or immediately after the record date of such dividend be proportionately reduced. If outstanding shares of Common Stock shall be combined into a smaller number of shares, the Exercise Price in effect immediately prior to such
combination shall, simultaneously with the effectiveness of such combination, be proportionately increased. When any adjustment is required to be made in the Exercise Price, the number of shares of Warrant Stock purchasable upon the exercise of this
Warrant shall be changed to the number determined by dividing (i) an amount equal to the number of shares issuable upon the exercise of this Warrant immediately prior to such adjustment, multiplied by the Exercise Price in effect immediately
prior to such adjustment, by (ii) the Exercise Price in effect immediately after such adjustment. 

 (b) Reclassification, Etc. In case there occurs any reclassification or
change of the outstanding securities of the Company (or any other corporation the stock or securities of which are at the time receivable upon the exercise of this Warrant) or any similar corporate reorganization on or after the date hereof, then
and in each such case the Registered Holder, upon the exercise hereof at any time after the consummation of such reclassification, change, or reorganization shall be entitled to receive, in lieu of the stock or other securities and property
receivable upon the exercise hereof prior to such consummation, the stock or other securities or property to which such Registered Holder would have been entitled upon such consummation if such Registered Holder had exercised this Warrant
immediately prior thereto, all subject to further adjustment pursuant to the provisions of this Section 3. 
 (c) Adjustment
Certificate. When any adjustment is required to be made in the Warrant Stock or the Exercise Price pursuant to this Section 3, the Company shall promptly mail to the Registered Holder a certificate setting forth (i) a brief
statement of the facts requiring such adjustment, (ii) the Exercise Price after such adjustment and (iii) the kind and amount of stock or other securities or property into which this Warrant shall be exercisable after such adjustment. 

(d) Acknowledgement. In order to avoid doubt, it is acknowledged that the holder of this Warrant shall be entitled to the
benefit of all adjustments pursuant to this Section 3 which occur prior to the exercise of this Warrant. 
 4.
Transfers. 
 (a) Transferability. Notwithstanding the foregoing Section 4(a), the Registered
Holder may not assign, pledge, or otherwise transfer this Warrant in whole or in part without the Company’s prior written consent, except to (A) in the case of any Holder who is an individual, (i) the spouses or former spouses,
parents, siblings or descendants of such Holder, (ii) all trusts for the benefit of such Holder or the individuals listed in clause (i), (iii) all persons principally owned by and/or organized or operating for the benefit of any of the
foregoing and (iv) all Affiliates of such Holder; and (B) in the case of any Holder that is an entity, (i) any Affiliate of such Holder, or (ii) any person to which such Holder shall transfer all or substantially all of its
assets. For purposes hereof, “Affiliate” of a Holder means (x) solely in the case of Avon Road Partners, L.P., any member, shareholder or partner of such Holder as of the date hereof and (y) any other person that directly
or indirectly (including through one or more intermediaries) controls, is controlled by, or is under common control with, such Holder. The term “control” (including the terms “controlled by” and “under common control
with”) as used in this defined term means the possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of a person, whether through the ownership of voting securities, by contract or
otherwise. Any attempt by Registered Holder to transfer or assign any rights, duties or obligations that arise under this Warrant without such permission shall be void. Any transfer of this Warrant or the Warrant Stock must be in compliance with all
applicable federal and state securities laws. The Registered Holder agrees not to make any sale, assignment, transfer, pledge or other disposition of all or any portion of the Warrant Stock, or any beneficial interest therein, unless and until the
transferee thereof has agreed in writing for the benefit of the Company to take and hold Warrant Stock subject to, and to be bound by, the terms and conditions set forth in this Warrant to the same extent as if the transferee were the original
Registered Holder hereunder. 
 (b) Instructions Regarding Transfer Restrictions. The Registered Holder consents to the
Company making a notation on its records and giving instructions to any transfer agent in order to implement the restrictions on transfer established in this Section 4. 

(c) Taxes. In no event shall the Company be required to pay any tax which may be payable in respect of any transfer
involved in the issue and delivery of any certificate in a name other than that of the Registered Holder, and the Company shall not be required to issue or deliver any such certificate unless and until the person or persons requesting the issue
thereof shall have paid to the Company the amount of such tax or shall have established to the satisfaction of the Company that such tax has been paid or is not payable. 

 5. Other Representations of Registered Holder. With respect to this Warrant,
Registered Holder represents and warrants to the Company as follows: 
 (a) Experience. It is experienced in evaluating
and investing in companies engaged in businesses similar to that of the Company; it understands that acquisition of this Warrant and investment in the Warrant Stock involves substantial risks; it has made detailed inquiries concerning the Company,
its business and services, its officers and its personnel; the officers of the Company have made available to Registered Holder any and all written information it has requested; the officers of the Company have answered to Registered Holder’s
satisfaction all inquiries made by it; it has such knowledge and experience in financial and business matters that it is capable of evaluating the merits and risks of investment in the Company; it can afford to bear the economic risk of holding the
unregistered Warrant and Warrant Stock for an indefinite period of time and has adequate means for providing for its current needs and contingencies; and can afford to suffer a complete loss of its investment in the Warrant and Warrant Stock. 

(b) Investment. It is acquiring this Warrant and the Warrant Stock for investment for its own account and not with a view
to, or for resale in connection with, any distribution thereof. The Registered Holder has no present intention of selling, granting any participation in, or otherwise distributing the Warrant Stock, nor does it have any contract, undertaking,
agreement or arrangement for the same. 
 (c) Restrictions on Resales. It acknowledges that, to the extent that at any
time the Warrant Stock is not registered on a then effective registration statement with the SEC, the Warrant Stock must be held indefinitely unless the resale of such Warrant Stock is subsequently registered on an effective registration statement
with the SEC under the Securities Act, or an exemption from such registration requirements is available for such resale. The Registered Holder is aware of the provisions of Rule 144 promulgated under the Securities Act, which permits the resale
of restricted securities subject to the satisfaction of certain conditions, which may include, among other things, the availability of certain current public information about the Company; the resale occurring not less than a specified period after
a party has purchased and paid for the security to be sold; the number of shares being sold during any three-month period not exceeding specified limitations; the sale being effected through a “broker’s transaction,” a transaction
directly with a “market maker” or a “riskless principal transaction” (as those terms are defined in the Securities Act or the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder); the
filing of a Form 144 notice, if applicable; and analyses relating to whether the Company was ever a “shell company” as referred to in Rule 144(i) . The Registered Holder acknowledges and understands that the Company may not be satisfying
the current public information requirement of Rule 144 at the time the Registered Holder wishes to sell the Warrant Stock and that, in such event, the Registered Holder may be precluded from selling the Warrant Stock under Rule 144 even if
the other applicable requirements of Rule 144 and this Warrant have been satisfied. The Registered Holder acknowledges that, in the event the applicable requirements of Rule 144 are not met, registration under the Securities Act or an
exemption from registration will be required for any disposition of the Warrant Stock. The Registered Holder understands that, although Rule 144 is not an exclusive safe harbor, the SEC has expressed its opinion that persons proposing to sell
restricted securities other than in a registered offering or pursuant to Rule 144 will have a substantial burden of proof in establishing that an exemption from the applicable registration requirements is available for such offers or sales and
that such persons and the brokers who participate in the transactions do so at their own risk. 
 (d) Access to Data.
It has had an opportunity to discuss the Company’s business, management and financial affairs with the Company’s management and has had the opportunity to inspect the Company’s facilities. 

(e) Accredited Investor. It is an “accredited investor” within the meaning of Regulation D promulgated under
the Securities Act and agrees to submit to the Company such further assurances of such status as may be reasonably requested by the Company. 

(f) No “Bad Actor” Disqualification. Neither (i) the Registered Holder, (ii) any of its directors,
executive officers, other officers that may serve as a director or officer of any company in which it invests, general partners or managing members, nor (iii) any beneficial owner of any of the Company’s voting equity securities (in
accordance with Rule 506(d) of the Securities Act) held by the Registered Holder is subject to any of the “bad actor” disqualifications described in Rule 506(d)(1)(i) through (viii) under the Securities Act, except as set forth in
Rule 506(d)(2)(ii) or (iii) or (d)(3) under the Securities Act and disclosed, reasonably in advance of the acceptance of this Warrant, in writing in reasonable detail to the Company. 

 6. Lock-Up Agreement. In connection
with the initial public offering of the Company’s securities and upon request of the Company or the underwriters managing such offering of the Company’s securities, the Registered Holder agrees not to sell, make any short sale of, loan,
grant any option for the purchase of, or otherwise dispose of any securities (other than those included in the registration) without the prior written consent of the Company or such underwriters, as the case may be, for such period of time (not to
exceed 180 days but subject to such extension or extensions as may be required by the underwriters in order to publish research reports while complying with Rule 2711 of the National Association of Security Dealers, Inc. and Rule 472(f)(4) of the
New York Stock Exchange) from the effective date of such registration statement as may be requested by the Company or such managing underwriters and to execute an agreement reflecting the foregoing as may be requested by the underwriters at the time
of the Company’s initial public offering. Each certificate or other instrument for Warrant Stock issued upon the exercise of this Warrant shall bear a legend substantially to the foregoing effect.  

7. No Impairment. The Company will not, by amendment of its charter or through reorganization, consolidation, merger,
dissolution, sale of assets or any other voluntary action, avoid or seek to avoid the observance or performance of any of the terms of this Warrant, but will at all times in good faith assist in the carrying out of all such terms and in the taking
of all such action as may be necessary or appropriate in order to protect the rights of the holder of this Warrant against impairment. When issued in accordance with the terms hereof against payment in full of the aggregate Exercise Price therefor,
the Warrant Stock will duly and validly issued, fully paid and will be free and clear of all liens, claims and encumbrances except such liens, claims and encumbrances as may be created by the holder of the Warrant.  

8. Termination. This Warrant (and the right to purchase securities upon exercise hereof) shall terminate upon the
earliest to occur of the following (the “Expiration Date” and each of the events described in this Section 8, a “Termination Event”): (a) March 16, 2019, (b) the sale, conveyance or disposal of
all or substantially all of the Company’s property or business or the Company’s merger with or into or consolidation with any other corporation (other than a wholly-owned subsidiary of the Company) or any other transaction or series of
related transactions in which more than fifty percent of the voting power of the Company is disposed of, provided that this Section 8(b) shall not apply to a merger effected exclusively for the purpose of changing the domicile of the
Company or to an equity financing in which the Company is the surviving corporation or to any purchase of Common Stock by Robert Berman pursuant to the exercise of options granted under that certain Amended and Restated Option Agreement dated
                    , 2017, by and among Robert Berman, James McCarthy and Richard Nathan; or (c) the closing of a firm commitment underwritten
public offering approved by the Board of Directors pursuant to a registration statement under the Securities Act. 
 9. Notices of
Certain Transactions. In case: 
 (a) the Company shall set a record date for the holders of its Common Stock (or other stock
or securities at the time deliverable upon the exercise of this Warrant) for the purpose of entitling or enabling them to receive any dividend or other distribution, or to receive any right to subscribe for or purchase any shares of stock of any
class or any other securities, or to receive any other right, to subscribe for or purchase any shares of stock of any class or any other securities, or to receive any other right, 

(b) of any capital reorganization of the Company, any reclassification of the capital stock of the Company, any consolidation or merger of the
Company, any consolidation or merger of the Company with or into another corporation (other than a consolidation or merger in which the Company is the surviving entity), or any transfer of all or substantially all of the assets of the Company, 

(c) of any other event which would constitute a Termination Event, 

(d) of the voluntary or involuntary dissolution, liquidation or winding-up of the Company, or 

(e) of any redemption of the Common Stock (or other stock or securities at the time deliverable upon the exercise of this Warrant), 

then, and in each such case, the Company will mail or cause to be mailed to the Registered Holder of this Warrant a notice specifying, as the
case may be, (i) the record date for the purpose of such dividend, distribution or right, and stating the amount and character of such dividend, distribution or right, or (ii) the effective date on which such reorganization,
reclassification, consolidation, merger, transfer, dissolution, liquidation, winding-up, 

 
redemption, conversion or other Termination Event is to take place, and the time, if any is to be fixed, as of which the holders of record of Common Stock (or such other stock or securities at
the time deliverable upon such reorganization, reclassification, consolidation, merger, transfer, dissolution, liquidation, winding-up, redemption or conversion) are to be determined. Such notice shall be
mailed at least ten days prior to the record date or effective date for the event specified in such notice. 
 10. Replacement of
Warrants. Upon receipt of evidence reasonably satisfactory to the Company of the loss, theft, destruction or mutilation of this Warrant and (in the case of loss, theft or destruction) upon delivery of an indemnity agreement (with
surety if reasonably required) in an amount reasonably satisfactory to the Company, or (in the case of mutilation) upon surrender and cancellation of this Warrant, the Company will issue, in lieu thereof, a new Warrant of like tenor. 

11. No Rights as Stockholder. Nothing contained herein shall entitle the Registered Holder to any rights as a stockholder
of the Company or to be deemed the holder of any securities that may at any time be issuable on the exercise of the rights hereunder for any purpose nor shall anything contained herein be construed to confer upon the Registered Holder, as such, any
right to vote for the election of directors or upon any matter submitted to stockholders at any meeting thereof, or to give or withhold consent to any corporate action (whether upon any recapitalization, issuance of stock, reclassification of stock,
change of par value or change of stock to no par value, consolidation, merger, conveyance or otherwise) or to receive notice of meetings, or to receive dividends or subscription rights or any other rights of a stockholder of the Company until the
rights under the Warrant shall have been exercised and the securities purchasable upon exercise of the rights hereunder shall have become deliverable as provided herein.  

12. No Fractional Shares. No fractional shares of Common Stock (or other stock or securities at the time deliverable upon
the exercise of this Warrant) will be issued in connection with any exercise hereunder. In lieu of any fractional shares which would otherwise be issuable, the Company shall pay cash equal to the product of such fraction multiplied by the fair
market value of one share of Common Stock (or other stock or securities at the time deliverable upon the exercise of this Warrant) on the date of exercise, as determined in good faith by the Company’s Board of Directors.  

13. Miscellaneous. 

(a) Mailing of Notices. Any notice required or permitted pursuant to this Warrant shall be in writing and shall be deemed
sufficient upon receipt, when delivered personally or sent by courier, overnight delivery service or confirmed facsimile, or forty-eight hours after being deposited in the regular mail, as certified or registered mail (airmail if sent
internationally), with postage prepaid, addressed (a) if to the Registered Holder, to the address of the Registered Holder most recently furnished in writing to the Company and (b) if to the Company, to the address set forth below or
subsequently modified by written notice to the Registered Holder. 
 (b) Amendment or Waiver. Any term of this Warrant
may be amended or waived upon written consent of the Company and the Registered Holder. No waiver of any single breach or default shall be deemed a waiver of any other breach or default theretofore or thereafter occurring. 

(c) Headings. The headings in this Warrant are for purposes of reference only and shall not limit or otherwise affect the
meaning of any provision of this Warrant. 
 (d) Saturdays, Sundays and Holidays. If the last or appointed day for the
taking of any action or the expiration of any right required or granted herein shall be a Saturday, Sunday or U.S. federal holiday, then such action may be taken or such right may be exercised on the next succeeding day that is not a Saturday,
Sunday or U.S. federal holiday. 
 (e) Rights and Obligations Survive Exercise of the Warrant. Except as otherwise
provided herein, the rights and obligations of the Company and the Registered Holder under this Warrant shall survive exercise of this Warrant. 

 (f) Governing Law. This Warrant shall be governed, construed and interpreted
in accordance with the laws of the State of Delaware, without giving effect to principles of conflicts of law. 
 (g) Jurisdiction and
Venue. Each of the Registered Holder and the Company irrevocably consents to the exclusive jurisdiction and venue of any court within Fairfax County, Virginia, in connection with any matter based upon or arising out of this Warrant or
the matters contemplated herein, and agrees that process may be served upon them in any manner authorized by the laws of the Commonwealth of Virginia for such persons. 

(h) Waiver of Jury Trial. EACH OF THE REGISTERED HOLDER AND THE COMPANY WAIVES, TO THE FULLEST EXTENT PERMITTED BY LAW,
ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING (WHETHER BASED ON CONTRACT, TORT OR OTHERWISE) ARISING OUT OF OR RELATED TO THIS WARRANT. 

(i) Entire Agreement. Except as expressly set forth herein, this Warrant (including the exhibits attached hereto)
constitutes the entire agreement and understanding of the Company and the Registered Holder with respect to the subject matter hereof and supersede all prior agreements and understandings relating to the subject matter hereof. 

(j) Equitable Relief. Each of the Company and the Registered Holder acknowledges that a breach or threatened breach by
such party of any of its obligations under this Warrant would give rise to irreparable harm to the other party hereto for which monetary damages would not be an adequate remedy and hereby agrees that in the event of a breach or a threatened breach
by such party of any such obligations, the other party hereto shall, in addition to any and all other rights and remedies that may be available to it in respect of such breach, be entitled to equitable relief, including a restraining order, an
injunction, specific performance and any other relief that may be available from a court of competent jurisdiction. 
 (k) Successor
and Assigns. This Warrant and the rights evidenced hereby shall be binding upon and shall inure to the benefit of the Company and the successors of the Company. 

(l) No Third-Party Beneficiaries. This Warrant is for the sole benefit of the Company and the Registered Holder and
nothing herein, express or implied, is intended to or shall confer upon any other person any legal or equitable right, benefit or remedy of any nature whatsoever, under or by reason of this Warrant. 

(m) No Strict Construction. This Warrant shall be construed without regard to any presumption or rule requiring
construction or interpretation against the party drafting an instrument or causing any instrument to be drafted. 
 (n)
Severability. If any term or provision of this Warrant is invalid, illegal or unenforceable in any jurisdiction, such invalidity, illegality or unenforceability shall not affect any other term or provision of this Warrant or
invalidate or render unenforceable such term or provision in any other jurisdiction. 
 (o) Counterparts. This Warrant
may be executed in counterparts, each of which shall be deemed an original, but all of which together shall be deemed to be one and the same agreement. A signed copy of this Warrant delivered by facsimile,
e-mail or other means of electronic transmission shall be deemed to have the same legal effect as delivery of an original signed copy of this Warrant. 

[Remainder of page intentionally left blank] 

 IN WITNESS WHEREOF, the Company has duly executed this Warrant on the Date of Issuance
first written above. 
  

			
	COMPANY:
	
	NOVUME SOLUTIONS, INC.
		
	By:	 	                                      
                              
	Name:	 	
	Title:	 	
		
	Address:	 	     14420 Albemarle Point Place,

    Suite 200, Chantilly, VA 20151

		
	Copy To:	 	     Morris DeFeo

    Crowell & Moring, LLP

    1001 Pennsylvania Avenue NW

    Washington, D.C. 20004

  

			
	Accepted and agreed,
	
	REGISTERED HOLDER:
	
	AVON ROAD PARTNERS, L.P.
		
	By:	 	                                     
                               
	Name:	 	Robert Berman
	Title:	 	General Partner

 EXHIBIT A 

PURCHASE/EXERCISE FORM 
  

			
	 To: NOVUME SOLUTIONS, INC.
	  	Dated:             , 20    

 The undersigned, pursuant to the provisions set forth in the attached Warrant
No. C-1, hereby irrevocably elects to (choose one):  

            (a) purchase
                 shares of the Common Stock covered by such Warrant and herewith makes payment of
$        , representing the full Exercise Price for such shares at the price per share provided for in such Warrant, or 

            (b) exercise such Warrant for
                 shares purchasable under the Warrant pursuant to the Net Issue Exercise provisions of Section 2(c) of such Warrant.

 The undersigned acknowledges that it has reviewed and agreed to the terms and conditions in this Warrant, including all representations,
warranties and covenants contained therein, and by its signature below hereby represents and warrants to the Company that such representations and warranties contained therein continue to be true and correct as of the date first written above in
this Purchase/Exercise Form. 
  

	
	
Signature:                 
                                         
             

	
	
Name (print):                
                                         
        

	
	
Title (if applicable):             
                                         
 

	
	
Company (if applicable):

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