Exhibit 4.2


 


real
goods solar, INC.


 


PREPAID
SERIES S Warrant To Purchase Common Stock


 


Warrant No.: S-___


Number of Shares of Common Stock: ___


Date of Issuance: _________ __, 2019 (“Issuance Date”)


 


Real Goods Solar, Inc., a
Colorado corporation (the “Company”), hereby certifies that, for good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged, [PURCHASER], 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 in Section 1(b)) then in effect, at any time or times on or after the date
hereof (the “Initial Exercisability Date”), but not after 11:59 p.m., New York time, on the Expiration Date,
up to such number of fully paid and nonassessable shares of Common Stock equal to ________, subject to adjustment as provided herein
(the “Warrant Shares”). Except as otherwise defined herein, capitalized terms in this Prepaid Series S 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 one of the Prepaid Series S Warrants
to Purchase Common Stock (the “Series S Warrants”) originally issued pursuant to Section 2 of the Securities
Purchase Agreement, dated as of April 2, 2019 (the “Subscription Date”), by and among the Company and the purchasers
signatory thereto. The Exercise Price has been paid upon purchase of this Warrant except for further payment of $0.01 per Warrant
Share, to be paid on exercise hereof.


 


1.            EXERCISE
OF WARRANT.


 


(a)          Mechanics
of Exercise. Subject to the terms and conditions hereof (including, without limitation, the limitations set forth in Section
1(f)), 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 (as defined in Section 1(b)) 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(d)). 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.
No ink-original Exercise Notice shall be required, nor shall any medallion guarantee (or other type of guarantee or notarization)
of any Exercise Notice be required. Execution and delivery of an Exercise Notice for all of the then remaining Warrant Shares shall
have the same effect as cancellation of the original of this Warrant after delivery of the Warrant Shares in accordance with the
terms hereof. 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 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 earlier of (i) the second (2nd) Trading Day
and (ii) the number of Trading Days comprising the Standard Settlement Period, 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 first (1st) 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 and either (A) the issuance of the Warrant Shares subject to the Exercise Notice is registered under the 1933
Act on an effective and available registration statement, (B) this Warrant is being exercised via Cashless Exercise or (C) such
Warrant Shares may be resold by the Holder pursuant to a Permitted Securities Transaction, 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) otherwise, 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
agrees to maintain a transfer agent that is a participant in the DTC Fast Automated Securities Transfer Program so long as this
Warrant remains outstanding and exercisable. 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, 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. The Company shall pay any and all taxes (other than the Holder’s income taxes) which may be payable
with respect to the issuance and delivery of Warrant Shares upon exercise of this Warrant. The Company’s obligations to issue
and deliver Warrant Shares in accordance with the terms and subject to the conditions hereof are absolute and unconditional, irrespective
of any action or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery
of any judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination.
If the Holder exercises this Warrant (other than by Cashless Exercise) at a time when either (I) the issuance of the Warrant Shares
subject to the Exercise Notice is not registered under the 1933 Act on an effective and available registration statement or (II)
the Holder may not sell the such Warrant Shares pursuant to a Permitted Securities Transaction, then any certificate representing
such Warrant Shares may contain a restrictive legend.


  




     


     


    

 


(b)          Exercise
Price. For purposes of this Warrant, “Exercise Price” means the remaining amount of $0.01, subject to adjustment
as provided herein. The Exercise Price has been paid upon purchase of this Warrant except for the further payment of $0.01 per
Warrant Share, to be paid on exercise hereof.


 


(c)          Company’s
Failure to Timely Deliver Securities. If the Company shall fail for any reason or for no reason, in the manner required by
Section 1(a), to issue to the Holder on or prior to the Share Delivery Date either (I) if the Transfer Agent is not participating
in the DTC Fast Automated Securities Transfer Program, a certificate for the number of shares of Common Stock to which the Holder
is entitled and register such shares of Common Stock on the Company’s share register or if the Transfer Agent is participating
in the DTC Fast Automated Securities Transfer Program, to credit the Holder’s balance account with DTC, for such number of
shares of Common Stock to which the Holder is entitled upon the Holder’s exercise of this Warrant, or (II) if the Registration
Statement (as defined in Section 1(d)) covering the issuance of all of the Warrant Shares that are the subject of the Exercise
Notice (the “Unavailable Warrant Shares”) is not available for the issuance of such Unavailable Warrant Shares
and the Company fails to promptly, but in no event later than one (1) Trading Day thereafter, (x) so notify the Holder and (y)
deliver the Warrant Shares electronically without any restrictive legend by crediting 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 (the event described in the immediately foregoing clause (II) is hereinafter referred
as a “Notice Failure” and together with the event described in clause (I) above, an “Exercise Failure”),
as the case may be, and if on or after the Share Delivery Date the Holder (or any other Person in respect, or on behalf, of the
Holder) purchases (in an open market transaction or otherwise) shares of Common Stock to deliver in satisfaction of a sale by the
Holder of all or any portion of the number of shares of Common Stock equal to or any portion of the number of shares of Common
Stock issuable upon such exercise that the Holder anticipated receiving from the Company (a “Buy-In”), then,
in addition to all other remedies available to the Holder, the Company shall, within three (3) Trading Days after the Holder’s
request and in the Holder’s discretion, either (i) pay cash to the Holder in an amount equal to the Holder’s total
purchase price (including brokerage commissions and other out-of-pocket expenses, if any) for the shares of Common Stock so purchased
(the “Buy-In Price”), at which point the Company’s obligation to deliver such certificate (and to issue
such shares of Common Stock) or credit such Holder’s balance account with DTC for such shares of Common Stock shall terminate,
or (ii) promptly honor its obligation to deliver to the Holder a certificate or certificates representing such shares of Common
Stock or credit such Holder’s balance account with DTC, as applicable, and pay cash to the Holder in an amount equal to the
excess (if any) of the Buy-In Price over the product of (A) such number of shares of Common Stock, times (B) any trading price
of the Common Stock selected by the Holder in writing as in effect at any time during the period beginning on the date of the applicable
Exercise Notice and ending on the date of such issuance and payment under this Section 1(c). Nothing shall limit the Holder’s
right to pursue any other remedies available to it hereunder, at law or in equity, including, without limitation, a decree of specific
performance and/or injunctive relief with respect to the Company’s failure to timely deliver certificates representing shares
of Common Stock (or to electronically deliver such shares of Common Stock) upon the exercise of this Warrant as required pursuant
to the terms hereof.


  




     


     


    

 


(d)          Cashless
Exercise. Notwithstanding anything contained herein to the contrary, if the Registration Statement on Form S-3 (File number
333-215985) or other applicable registration statement under the 1933 Act (the “Registration Statement”) covering
the issuance of the Unavailable Warrant Shares is not available for the issuance of such Unavailable Warrant Shares 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 x B) - (A x 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=	as applicable: (i) the VWAP on the Trading Day immediately
preceding the date of the applicable Exercise Notice if such Exercise Notice is (1) both executed and delivered pursuant to Section
1(a) hereof on a day that is not a Trading Day or (2) both executed and delivered pursuant to Section 1(a) hereof on a Trading
Day prior to the opening of “regular trading hours” (as defined in Rule 600(b)(64) of Regulation NMS promulgated under
the federal securities laws) on such Trading Day, (ii) at the option of the Holder, either (y) the VWAP on the Trading Day immediately
preceding the date of the applicable Exercise Notice or (z) the Bid Price of the Common Stock on the principal Trading Market
as reported by Bloomberg L.P. as of the time of the Holder’s execution of the applicable Exercise Notice if such Exercise
Notice is executed during “regular trading hours” on a Trading Day and is delivered within two (2) hours thereafter
(including until two (2) hours after the close of “regular trading hours” on a Trading Day) pursuant to Section 1(a)
hereof or (iii) the VWAP on the date of the applicable Exercise Notice if the date of such Exercise Notice is a Trading Day and
such Exercise Notice is both executed and delivered pursuant to Section 1(a) hereof after the close of “regular trading
hours” on such Trading Day.



 


		C=	the remaining $0.01 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.



 


“Bid
Price” means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common
Stock is then listed or quoted on a Trading Market, the bid price of the Common Stock for the time in question (or the nearest
preceding date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on
a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if OTCQB or OTCQX is not a Trading
Market, the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or OTCQX as
applicable, (c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the Common Stock
are then reported in the “Pink Sheets” published by OTC Markets Group, Inc. (or a similar organization or agency succeeding
to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in all
other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith
by the Purchasers of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company, the fees
and expenses of which shall be paid by the Company. 


 




     


     


    

 


“VWAP”
means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then listed
or quoted on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest preceding
date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based on a Trading
Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if OTCQB or OTCQX is not a Trading Market,
the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or OTCQX as applicable,
(c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the Common Stock are then
reported in the “Pink Sheets” published by OTC Markets Group, Inc. (or a similar organization or agency succeeding
to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in all
other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith
by the Purchasers of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company, the fees
and expenses of which shall be paid by the Company.


 


If Warrant Shares are issued
in a Cashless Exercise, the parties acknowledge and agree that in accordance with Section 3(a)(9) of the 1933 Act, the Warrant
Shares shall take on the registered characteristics of the Warrant being exercised. The Company agrees not to take any position
contrary to this Section 1(d).


 


(e)          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.


  


(f)          Beneficial
Ownership Limitation on Exercises. Notwithstanding anything to the contrary contained herein, the Company shall not effect
the exercise of any portion of this Warrant, and the Holder shall not have the right to exercise any portion of this Warrant, pursuant
to the terms and conditions of this Warrant and any such exercise shall be null and void and treated as if never made, to the extent
that after giving effect to such exercise, the Holder together with the other Attribution Parties collectively would beneficially
own in excess of ___% (the “Maximum Percentage”) of the number of 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 the Holder and the other Attribution Parties shall include the number of shares of Common Stock held by the Holder and
all other Attribution Parties plus the number of shares of Common Stock issuable upon exercise of this Warrant with respect to
which the determination of such sentence is being made, but shall exclude the number of shares of Common Stock which would be issuable
upon (A) exercise of the remaining, unexercised portion of this Warrant beneficially owned by the Holder or any of the other Attribution
Parties and (B) exercise or conversion of the unexercised or unconverted portion of any other securities of the Company (including,
without limitation, any convertible notes or convertible preferred stock or warrants) beneficially owned by the Holder or any other
Attribution Party subject to a limitation on conversion or exercise analogous to the limitation contained in this Section 1(f).
For purposes of this Section 1(f), beneficial ownership shall be calculated in accordance with Section 13(d) of the Securities
Exchange Act of 1934, as amended (the “1934 Act”). For purposes of this Warrant, in determining the number of
outstanding shares of Common Stock the Holder may acquire upon the exercise of this Warrant without exceeding the Maximum Percentage,
the Holder may rely on the number of outstanding shares of Common Stock as reflected in (x) 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 Securities and Exchange
Commission (the “SEC”), as the case may be, (y) a more recent public announcement by the Company or (3) any
other written notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding (the “Reported
Outstanding Share Number”). If the Company receives an Exercise Notice from the Holder at a time when the actual number
of outstanding shares of Common Stock is less than the Reported Outstanding Share Number, the Company shall (i) notify the Holder
in writing of the number of shares of Common Stock then outstanding and, to the extent that such Exercise Notice would otherwise
cause the Holder’s beneficial ownership, as determined pursuant to this Section 1(f), to exceed the Maximum Percentage, the
Holder must notify the Company of a reduced number of Warrant Shares to be purchased pursuant to such Exercise Notice (the number
of shares by which such purchase is reduced, the “Reduction Shares”) and (ii) as soon as reasonably practicable,
the Company shall return to the Holder any exercise price paid by the Holder for the Reduction Shares. For any reason at any time,
upon the written or oral request of the Holder, the Company shall within one (1) Business Day confirm orally and in writing or
by electronic mail to the 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 securities of the Company, including
this Warrant, by the Holder and any other Attribution Party since the date as of which the Reported Outstanding Share Number was
reported. In the event that the issuance of shares of Common Stock to the Holder upon exercise of this Warrant results in the Holder
and the other Attribution Parties being deemed to beneficially own, in the aggregate, more than the Maximum Percentage of the number
of outstanding shares of Common Stock (as determined under Section 13(d) of the 1934 Act), the number of shares so issued by which
the Holder’s and the other Attribution Parties’ aggregate beneficial ownership exceeds the Maximum Percentage (the
“Excess Shares”) shall be deemed null and void and shall be cancelled ab initio, and the Holder shall not have
the power to vote or to transfer the Excess Shares. As soon as reasonably practicable after the issuance of the Excess Shares has
been deemed null and void, the Company shall return to the Holder the exercise price paid by the Holder for the Excess Shares.
Upon delivery of a written notice to the Company, the Holder may from time to time increase or decrease the Maximum Percentage
to any other percentage not in excess of 9.99% as specified in such notice; provided, however, that (i) any such
increase in the Maximum Percentage will not be effective until the sixty-first (61st) day after such notice is delivered
to the Company and (ii) any such increase or decrease will apply only to the Holder and the other Attribution Parties and not to
any other holder of Series S Warrants that is not an Attribution Party of the Holder. For purposes of clarity, the shares of Common
Stock issuable pursuant to the terms of this Warrant in excess of the Maximum Percentage shall not be deemed to be beneficially
owned by the Holder for any purpose including for purposes of Section 13(d) or Rule 16a-1(a)(1) of the 1934 Act. The provisions
of this paragraph shall be construed and implemented in a manner otherwise than in strict conformity with the terms of this Section
1(f) to the extent necessary to correct this paragraph or any portion of this paragraph which may be defective or inconsistent
with the intended beneficial ownership limitation contained in this Section 1(f) or to make changes or supplements necessary or
desirable to properly give effect to such limitation. The limitation contained in this paragraph may not be waived and shall apply
to a successor holder of this Warrant.


  




     


     


    

 


(g)          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 maximum 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 promptly take all action reasonably 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 and the other Series
S Warrants then outstanding. Without limiting the generality of the foregoing sentence, as soon as practicable after the date of
the occurrence of an Authorized Share Failure, but in no event later than seventy-five (75) days after the occurrence of such Authorized
Share Failure, the Company shall either (x) obtain the written consent of its shareholders for the approval of an increase in the
number of authorized shares of Common Stock and provide each shareholder with an information statement with respect thereto or
(y) hold a meeting of its shareholders for the approval of an increase in the number of authorized shares of Common Stock. In connection
with such meeting, the Company shall provide each shareholder with a proxy statement and shall use its reasonable best efforts
to solicit its shareholders’ approval of such increase in authorized shares of Common Stock and to cause its board of directors
to recommend to the shareholders that they approve such proposal. Notwithstanding the foregoing, if any such time of an Authorized
Share Failure, the Company is able to obtain the written consent of a majority of the shares of its issued and outstanding Common
Stock to approve the increase in the number of authorized shares of Common Stock, the Company may satisfy this obligation by obtaining
such consent and submitting for filing with the SEC an Information Statement on Schedule 14C. The initial number of shares of Common
Stock reserved for exercise of this Warrant and the other Series S Warrants and each increase in the number of shares so reserved
shall be allocated pro rata among the Holder and the holders of the other Series S Warrants, based on the number of shares of Common
Stock issuable upon exercise of this Warrant (without regard to any limitations in exercise) issued to the Holder on the Issuance
Date (the “Authorized Share Allocation”). In the event that the Holder shall sell or otherwise transfer this
Warrant, each transferee shall be allocated a pro rata portion of such holder’s Authorized Share Allocation. Any shares of
Common Stock reserved and allocated to any Person which ceases to hold any Series S Warrants shall be allocated to the Holder and
the remaining holders of Series S Warrants, pro rata based on the shares of Common Stock issuable upon exercise of the Series S
Warrants then held by such holders (without regard to any limitations on the exercise of the Series S Warrants).


 




     


     


    

 


2.            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)          [RESERVED]


 


(b)          Adjustment
Upon Subdivision or Combination of Shares of Common Stock. If the Company at any time on or after the Subscription Date subdivides
(by any stock split, stock dividend, recapitalization or otherwise) one or more classes of its outstanding shares of 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 Subscription Date
combines (by combination, reverse stock split or otherwise) one or more classes of its outstanding shares of 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.


 


(c)          Other
Events. If any event occurs of the type contemplated by the provisions of this Section 2, but not expressly provided for by
such provisions (including, without limitation, the granting of stock appreciation rights, phantom stock rights or other rights
with equity features), then the Company’s Board of Directors will make an appropriate adjustment in the Exercise Price and
the number of Warrant Shares, as mutually determined by the Company’s Board of Directors and the Required Holders, so as
to protect the rights of the Holder; provided, however, that no such adjustment pursuant to this Section 2(c) will
increase the Exercise Price or decrease the number of Warrant Shares as otherwise determined pursuant to this Section 2.


  


3.            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 shares 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,
including without limitation, the Maximum Percentage) 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 shares of Common Stock are to be determined for the
participation in such Distribution (provided, however, that to the extent that the Holder’s right to participate
in any such Distribution would result in the Holder and the other Attribution Parties exceeding the Maximum Percentage, then the
Holder shall not be entitled to participate in such Distribution to such extent (and shall not be entitled to beneficial ownership
of such shares of Common Stock as a result of such Distribution (and beneficial ownership) to such extent) and the portion of such
Distribution shall be held in abeyance for the benefit of the Holder until such time or times as its right thereto would not result
in the Holder and the other Attribution Parties exceeding the Maximum Percentage, at which time or times the Holder shall be granted
such Distribution (and any Distributions declared or made on such initial Distribution or on any subsequent Distribution held similarly
in abeyance) to the same extent as if there had been no such limitation).


 


4.            PURCHASE
RIGHTS; FUNDAMENTAL TRANSACTIONS.


 


(a)          Purchase
Rights. In addition to any adjustments pursuant to Section 2 above, if at any time the Company grants, issues or sells any
Options, Convertible Securities or rights to purchase stock, warrants, securities or other property pro rata to the record holders
of any class of Common Stock (the “Purchase Rights”), then the Holder will be entitled to acquire, upon the
terms applicable to such Purchase Rights, the aggregate Purchase Rights which the Holder could have acquired 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, including without limitation, the Maximum Percentage) immediately before the date
on which a record is taken for the grant, issuance or sale of such Purchase Rights, or, if no such record is taken, the date as
of which the record holders of shares of Common Stock are to be determined for the grant, issue or sale of such Purchase Rights
(provided, however, that to the extent that the Holder’s right to participate in any such Purchase Right would
result in the Holder and the other Attribution Parties exceeding the Maximum Percentage, then the Holder shall not be entitled
to participate in such Purchase Right to such extent (and shall not be entitled to beneficial ownership of such shares of Common
Stock as a result of such Purchase Right (and beneficial ownership) to such extent) and such Purchase Right to such extent shall
be held in abeyance for the benefit of the Holder until such time or times as its right thereto would not result in the Holder
and the other Attribution Parties exceeding the Maximum Percentage, at which time or times the Holder shall be granted such right
(and any Purchase Right granted, issued or sold on such initial Purchase Right or on any subsequent Purchase Right held similarly
in abeyance) to the same extent as if there had been no such limitation).


  




     


     


    

 


(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 and the other Transaction Documents in accordance with the
provisions of this Section 4(b) pursuant to written agreements in form and substance reasonably satisfactory to the Required Holders
and approved by the Required Holders, such approval not to be unreasonably withheld or delayed, prior to such Fundamental Transaction,
including agreements, if so requested by the Holder, to deliver to each holder of the Series S Warrants in exchange for such Series
S Warrants 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 shares of Common Stock reflected
by the terms of such Fundamental Transaction, and exercisable for a corresponding number of shares of capital stock equivalent
to the shares of Common Stock acquirable and receivable upon exercise of this Warrant (without regard to any limitations on the
exercise of this Warrant) prior to such Fundamental Transaction, and satisfactory to the Required Holders, 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 shares of 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, 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, and the provisions 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, solely at the request of the Holder, if the Successor Entity and/or Successor Entities is a publicly
traded corporation whose common stock is quoted on or listed for trading on an Eligible Market, shall deliver (in addition to and
without limiting any right under this Warrant) to the Holder in exchange for this Warrant a security of the Successor Entity and/or
Successor Entities evidenced by a written instrument substantially similar in form and substance to this Warrant and exercisable
for a corresponding number of shares of capital stock of the Successor Entity and/or Successor Entities (the “Successor
Capital Stock”) equivalent to the shares of Common Stock acquirable and receivable upon exercise of this Warrant (without
regard to any limitations on the exercise of this Warrant) prior to such Fundamental Transaction (such corresponding number of
shares of Successor Capital Stock to be delivered to the Holder shall be equal to the greater of (A) the quotient of (i) the aggregate
dollar value of all consideration (including cash consideration and any consideration other than cash (“Non-Cash Consideration”),
in such Fundamental Transaction, as such values are set forth in any definitive agreement for the Fundamental Transaction that
has been executed at the time of the first public announcement of the Fundamental Transaction or, if no such value is determinable
from such definitive agreement, as determined in accordance with Section 12 with the term “Non-Cash Consideration”
being substituted for the term “Exercise Price”) 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 (without regard to any limitations on the exercise of
this Warrant) (the “Aggregate Consideration”) divided by (ii) the per share Closing Sale Price of such Successor
Capital Stock on the Trading Day immediately prior to the consummation or occurrence of the Fundamental Transaction and (B) the
product of (i) the Aggregate Consideration and (ii) the highest exchange ratio pursuant to which any shareholder of the Company
may exchange Common Stock for Successor Capital Stock) (provided, however, that to the extent that the Holder’s
right to receive any such shares of publicly traded common stock (or their equivalent) of the Successor Entity would result in
the Holder and its other Attribution Parties exceeding the Maximum Percentage, if applicable, then the Holder shall not be entitled
to receive such shares to such extent (and shall not be entitled to beneficial ownership of such shares of publicly traded common
stock (or their equivalent) of the Successor Entity as a result of such consideration to such extent) and the portion of such shares
shall be held in abeyance for the Holder until such time or times, as its right thereto would not result in the Holder and its
other Attribution Parties exceeding the Maximum Percentage, at which time or times the Holder shall be delivered such shares to
the extent as if there had been no such limitation), and such security shall be reasonably satisfactory to the Holder, and with
an identical exercise price to the Exercise Price hereunder (such adjustments to the number of shares of capital stock and such
exercise price being for the purpose of protecting after the consummation or occurrence of such Fundamental Transaction the economic
value of this Warrant that was in effect immediately prior to the consummation or occurrence of such Fundamental Transaction, as
elected by the Holder solely at its option). Upon occurrence or consummation of the Fundamental Transaction, and it shall be a
required condition to the occurrence or consummation of such Fundamental Transaction that, the Company and the Successor Entity
or Successor Entities 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, as elected by the Holder solely at its option, shares
of 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 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 (without regard to
any limitations on the exercise of this Warrant), 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 shares of Common Stock are entitled to receive securities, cash, assets or other property with respect
to or in exchange for shares of Common Stock (a “Corporate Event”), the Company shall make appropriate provision
to ensure 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, shares of Common Stock or Successor Capital
Stock or, if so elected by the Holder, in lieu of the shares of 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
Sections 3 and 4(a), 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 shares of Common Stock), such shares of stock,
securities, cash, assets or any other property whatsoever (including warrants or other purchase or subscription rights and any
shares of 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 (without regard to any limitations on exercise of this Warrant). 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(b) shall apply
similarly and equally to successive Fundamental Transactions and Corporate Events. Notwithstanding the foregoing, the Holder may
elect, in its sole discretion, by delivery of written notice to the Company, to waive this Section 4(b) and allow the Company to
enter into or be a party to a Fundamental Transaction without the assumption of this Warrant pursuant to the provisions of this
Section 4(b), provided, however, that any such waiver shall only bind the Holder with respect to this Warrant and
not the Holder with respect to any other warrant or other securities of the Company or any holder of other Series S Warrants.


 




     


     


    

 


(c)          Notwithstanding
anything herein to the contrary, the Company shall be required to obtain the prior written consent of the Required Holders to enter
into, allow and/or consummate a Fundamental Transaction other than one in which a Successor Entity that is a publicly traded corporation
whose stock is quoted or listed for trading on an Eligible Market assumes this Warrant such that the Warrant shall be exercisable
for the publicly traded Common Stock of such Successor Entity.


 


5.            NONCIRCUMVENTION.
The Company hereby covenants and agrees that the Company will not, by amendment of its Articles 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. Without limiting the generality of the foregoing, the Company (i) shall 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) shall
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) shall, so long as any of the Series S Warrants
are outstanding, take all action necessary to reserve and keep available out of its authorized and unissued shares of Common Stock,
solely for the purpose of effecting the exercise of the Series S Warrants, the Required Reserve Amount to effect the exercise of
the Series S Warrants then outstanding (without regard to any limitations on exercise).


 


6.            WARRANT
HOLDER NOT DEEMED A SHAREHOLDER. 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 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 shareholder 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 shareholder 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 shareholders of the Company generally, contemporaneously with the giving thereof to the shareholders.


  


7.            REISSUANCE
OF WARRANTS.


 


(a)          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.


 


(b)          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 (which shall not include the posting of any bond) 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.


 


(c)          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; provided, however, that no Series
S Warrants for fractional Warrant Shares shall be given.


 




     


     


    

 


(d)          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.


 


8.            NOTICES.
Whenever notice is required to be given under this Warrant, unless otherwise provided herein, with respect to a notice to the Company
or to a Holder, such notice shall be given in accordance with Section 5.4 of the Securities Purchase Agreement (in the case of
a Holder who is not a party to the Securities Purchase Agreement, to such Holder’s address, facsimile number or e-mail address
in the Company’s records). 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 shares
of 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 shares of Common Stock or (C) for determining rights to vote with respect
to any Fundamental Transaction, dissolution or liquidation; provided, however, 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.


 


9.            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.


  


10.          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 in the Securities Purchase Agreement 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.


 




     


     


    

 


11.          CONSTRUCTION;
HEADINGS. This Warrant shall be deemed to be jointly drafted by the Company and all the Holders and shall not be construed
against any Person as the drafter hereof. The headings of this Warrant are for convenience of reference and shall not form part
of, or affect the interpretation of, this Warrant.


 


12.          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 or electronic mail within
two (2) Business Days after 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
two (2) Business Days after such disputed determination or arithmetic calculation being submitted to the Holder, then the Company
shall, within one (1) Business Day submit via facsimile (a) the disputed determination of the Exercise Price to an independent,
reputable investment bank selected by the Holder and approved by the Company, such approval not to be unreasonably withheld or
delayed or (b) the disputed arithmetic calculation of the Warrant Shares to the Company’s independent, outside accountant,
approved by the Holder, such approval not to be unreasonably withheld or delayed. 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.


 


13.          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 and the other Transaction Documents, 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.


 


14.          TRANSFER.
This Warrant and the Warrant Shares may be offered for sale, sold, transferred, pledged or assigned without the consent of the
Company.


  


15.          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).


 


16.          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.


 




     


     


    

 


17.          CERTAIN
DEFINITIONS. Capitalized terms used and not otherwise defined herein shall have the meanings set forth in the Securities Purchase
Agreement. For purposes of this Warrant, the following terms shall have the following meanings:


 


(a)          “1933
Act” means the Securities Act of 1933, as amended.


 


(b)          “Affiliate”
means, with respect to any Person, any other Person that directly or indirectly controls, is controlled by, or is under common
control with, such Person, it being understood for purposes of this definition that “control” of a Person means the
power directly or indirectly either to vote 10% or more of the stock having ordinary voting power for the election of directors
of such Person or direct or cause the direction of the management and policies of such Person whether by contract or otherwise.


 


(c)          “Attribution
Parties” means, collectively, the following Persons: (i) any investment vehicle, including, any funds, feeder funds or
managed accounts, currently, or from time to time after the Issuance Date, directly or indirectly managed or advised by the Holder’s
investment manager or any of its Affiliates or principals, (ii) any direct or indirect Affiliates of the Holder or any of the foregoing,
(iii) any Person acting or who could be deemed to be acting as a Group together with the Holder or any of the foregoing and (iv)
any other Persons whose beneficial ownership of the Company’s Common Stock would or could be aggregated with the Holder’s
and the other Attribution Parties for purposes of Section 13(d) of the 1934 Act. For clarity, the purpose of the foregoing is to
subject collectively the Holder and all other Attribution Parties to the Maximum Percentage.


 


(d)          “Bloomberg”
means Bloomberg Financial Markets.


 


(e)          “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.


 


(f)          “Closing
Sale Price” means, for any security as of any date, the last closing trade price 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
trade price, then the last trade price of such security prior to 4:00:00 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 trade price 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 trade price of such security in the over-the-counter market on the electronic bulletin
board for such security as reported by Bloomberg, or, if no last trade price is reported for such security by Bloomberg, the average
of the ask prices 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 Sale Price cannot be calculated for a security on a particular date
on any of the foregoing bases, the Closing Sale Price 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.


 


(g)          “Common
Stock” means (i) the Company’s shares of Class A 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.


 


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


 


(i)          “Eligible
Market” means the Principal Market, the NYSE American LLC, The NASDAQ Global Market, The NASDAQ Global Select Market,
The New York Stock Exchange, Inc., the OTC Bulletin Board, or the OTCQB.


 


(j)          “Expiration
Date” means the date that is sixty (60) 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.


 




     


     


    

 


(k)          “Fundamental
Transaction” means (A) that the Company shall, directly or indirectly, including through subsidiaries, Affiliates or
otherwise, in one or more related transactions, (i) consolidate or merge with or into (whether or not the Company is the surviving
corporation) another Subject Entity, or (ii) sell, assign, transfer, convey or otherwise dispose of all or substantially all of
the properties or assets of the Company or any of its “significant subsidiaries” (as defined in Rule 1-02 of Regulation
S-X) to one or more Subject Entities, or (iii) make, or allow one or more Subject Entities to make, or allow the Company to be
subject to or have its Common Stock be subject to or party to one or more Subject Entities making, a purchase, tender or exchange
offer that is accepted by the holders of at least either (x) 50% of the outstanding shares of Common Stock, (y) 50% of the outstanding
shares of Common Stock calculated as if any shares of Common Stock held by all Subject Entities making or party to, or Affiliated
with any Subject Entities making or party to, such purchase, tender or exchange offer were not outstanding; or (z) such number
of shares of Common Stock such that all Subject Entities making or party to, or Affiliated with any Subject Entity making or party
to, such purchase, tender or exchange offer, become collectively the beneficial owners (as defined in Rule 13d-3 under the 1934
Act) of at least 50% of the outstanding shares of Common Stock, or (iv) consummate a share purchase agreement or other business
combination (including, without limitation, a reorganization, recapitalization, spin-off or scheme of arrangement) with one or
more Subject Entities whereby such Subject Entities, individually or in the aggregate, acquire, either (x) at least 50% of the
outstanding shares of Common Stock, (y) at least 50% of the outstanding shares of Common Stock calculated as if any shares of Common
Stock held by all the Subject Entities making or party to, or Affiliated with any Subject Entity making or party to, such stock
purchase agreement or other business combination were not outstanding; or (z) such number of shares of Common Stock such that the
Subject Entities become collectively the beneficial owners (as defined in Rule 13d-3 under the 1934 Act) of at least 50% of the
outstanding shares of Common Stock, or (v) reorganize, recapitalize or reclassify its Common Stock, (B) that the Company shall,
directly or indirectly, including through subsidiaries, Affiliates or otherwise, in one or more related transactions, allow any
Subject Entity individually or the Subject Entities in the aggregate to be or become the “beneficial owner” (as defined
in Rule 13d-3 under the 1934 Act), directly or indirectly, whether through acquisition, purchase, assignment, conveyance, tender,
tender offer, exchange, reduction in outstanding shares of Common Stock, merger, consolidation, business combination, reorganization,
recapitalization, spin-off, scheme of arrangement, reorganization, recapitalization or reclassification or otherwise in any manner
whatsoever, of either (x) at least 50% of the aggregate ordinary voting power represented by issued and outstanding Common Stock,
(y) at least 50% of the aggregate ordinary voting power represented by issued and outstanding Common Stock not held by all such
Subject Entities as of the Subscription Date calculated as if any shares of Common Stock held by all such Subject Entities were
not outstanding, or (z) a percentage of the aggregate ordinary voting power represented by issued and outstanding shares of Common
Stock or other equity securities of the Company sufficient to allow such Subject Entities to effect a statutory short form merger
or other transaction requiring other shareholders of the Company to surrender their shares of Common Stock without approval of
the shareholders of the Company or (C) directly or indirectly, including through subsidiaries, Affiliates or otherwise, in one
or more related transactions, the issuance of or the entering into any other instrument or transaction structured in a manner to
circumvent, or that circumvents, the intent of this definition in which case this definition shall be construed and implemented
in a manner otherwise than in strict conformity with the terms of this definition to the extent necessary to correct this definition
or any portion of this definition which may be defective or inconsistent with the intended treatment of such instrument or transaction.


  


(l)          “Group”
means a “group” as that term is used in Section 13(d) of the 1934 Act and as defined in Rule 13d-5 thereunder.


 


(m)         “Options”
means any rights, warrants or options to subscribe for or purchase shares of Common Stock or Convertible Securities.


 


(n)         “Parent
Entity” of a Person means an entity that, directly or indirectly, controls the applicable Person, including such entity
whose common shares or common stock or equivalent equity security is quoted or listed on an Eligible Market (or, if so elected
by the Required Holders, any other market, exchange or quotation system), or, if there is more than one such Person or such entity,
the Person or such entity designated by the Required Holders or in the absence of such designation, such Person or entity with
the largest public market capitalization as of the date of consummation of the Fundamental Transaction.


 




     


     


    

 


(o)         “Permitted
Securities Transaction” means that the Warrant Shares subject to an Exercise Notice may then be resold pursuant (A) an
effective and available registration statement, (B) Rule 144 if the Holder indicates on the applicable Exercise Notice that the
shares of Common Stock issuable in connection with such Exercise Notice are being resold either (x) prior to, (y) contemporaneously
with, or (z) within ten (10) Trading Days after, as applicable, the date of the applicable Exercise Notice by the Holder, or (C)
Rule 144 without having to comply with the information requirements under Rule 144(c)(1).


 


(p)         “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.


 


(q)         “Principal
Market” means the OTCQX.


 


(r)          “Required
Holders” means the holders of the Series S Warrants representing at least two-thirds of the shares of Common Stock underlying
the Series S Warrants as of the Issuance Date.


 


(s)         “Rule
144” means Rule 144 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended or interpreted
from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose
and effect as such Rule.


 


(t)          “Securities
Purchase Agreement” means the Securities Purchase Agreement, dated April 2, 2019, entered into by the Company and the
purchasers party thereto.


 


(u)         “Standard
Settlement Period” means the standard settlement period, expressed in a number of Trading Days, on the Company’s
primary trading market or quotation system from time to time, with respect to trades of the Common Stock as in effect of the date
of delivery of the Exercise Notice.


 


(v)         “Subject
Entity” means any Person, Persons or Group or any Affiliate or associate of any such Person, Persons or Group.


 


(w)        “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.


 


(x)          “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 is then traded.


 


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


 


	 	REAL GOODS SOLAR, INC.
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 


 




     


     


    

 


EXHIBIT A


 


EXERCISE NOTICE


TO BE EXECUTED BY THE REGISTERED HOLDER TO
EXERCISE THIS


PREPAID SERIES S WARRANT TO PURCHASE COMMON
STOCK


 


REAL GOODS SOLAR, INC.


 


The undersigned Holder
hereby exercises the right to purchase _________________ of the shares of Class A Common Stock, par value $0.0001 per share (the
“Warrant Shares”), of Real Goods Solar, Inc., a Colorado corporation (the “Company”), evidenced
by the attached Prepaid Series S Warrant to Purchase Common Stock No. _-____ (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; or


 


____________   a “Cashless
Exercise” with respect to _______________ Warrant Shares.


 


 ̈
Check here if the Warrant Shares to be issued are being resold (or have been resold) in reliance on the exemption from registration
provided by Rule 144 either (x) prior to, (y) contemporaneously with or (z) no later than ten (10) Trading Days after, as applicable,
the date of this Exercise Notice.


 


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. Beneficial Ownership.
Notwithstanding anything to the contrary contained herein, this Exercise Notice shall constitute a representation by the undersigned
Holder that after giving effect to the exercise provided for in this Exercise Notice, such Holder (together with its Attribution
Parties) will not have beneficial ownership (together with the beneficial ownership of such Person’s Attribution Parties)
of a number of shares of the Common Stock which exceeds the Maximum Percentage (as defined in the Warrant) of the total outstanding
shares of the Common Stock of the Company as determined pursuant to the provisions of Section 1(f)(i) of the Warrant.


 


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


 


Please issue the Warrant Shares in the following
name and to the following account:


 


	Issue to:	 
	 	 
	 	 


 


	Facsimile Number and Electronic Mail:	 
	 	 
	Authorization:	 
	 	 
	By:	 
	 	 
	Title:	 
	 	 
	Dated:	 
	 	 
	Broker Name:	 
	 	 
	Broker DTC #:	 
	 	 
	Broker Telephone #:	 
	 	 
	Account Number:	 
	  (if electronic book entry transfer)	 
	 	 
	Transaction Code Number:	 
	  (if electronic book entry transfer)	 


 




     


     


    

 


TRANSFER AGENT INSTRUCTIONS


 


REAL
GOODS SOLAR, INC.


 


__________ __, 20__


 


Computershare Trust Company, N.A.


8742 Lucent Blvd. Suite 225


Highlands Ranch CO 80129


Telephone: (303) 262-0684


Facsimile: (303) 262-0609


 


	 	Re:	Order to Issue Common Stock of Real Goods Solar, Inc.


 


Ladies and Gentlemen:


 


Reference is made to (A) the Securities Purchase
Agreement, dated as of _______, 2019, by and among Real Goods Solar, Inc., a Colorado corporation (the “Company”),
and the purchasers party thereto, and the Company’s Registration Statement on Form S-3 (File No. 333-215985) and the Company’s
prospectus filed on ______ __, 2019 pursuant to Rule 424 promulgated pursuant to the Securities Act of 1933, as amended (the “1933
Act”) pursuant to which the Company is issuing to the purchasers (i) shares of Class A common stock of the Company, par value
$0.0001 per share (the “Common Stock”), and (ii) Series R Warrants (the “Warrants”), which are exercisable
to purchase shares of Common Stock; (B) the related Transfer Agent Instructions, dated ______ __, 2019 (the “_____ 2019 Instruction”);
(C) the exercise notice attached hereto (the “Exercise Notice”); and (D) a certificate of the General Counsel of the
Company (or its outside legal counsel) that (1) a registration statement covering the issuance of the shares of Common Stock subject
to this letter has been declared effective by the Securities and Exchange Commission under the Securities Act of 1933, as amended
(the “1933 Act”), (2) a registration statement covering the resale of the shares of the Common Stock, subject to this
letter, has been declared effective by the Securities and Exchange Commission under the 1933 Act, (3) the Holders may transfer
such shares of the Common Stock under Rule 144 promulgated under the 1933 Act (“Rule 144”), (4) the Holders may transfer
such shares of the Common Stock under Rule 144, without having to comply with the information requirements under Rule 144(c)(1)
or (5) or the Warrants are being exercised via Cashless Exercise.


 


This instruction letter shall serve as our
authorization and direction to you to issue:


 


	 	·	to the recipient identified under “Issue to” in the Exercise Notice,
	 	·	in book entry form,
	 	·	such number of shares of Common Stock as set forth under “Delivery of Warrant Shares,” respectively, in the Exercise Notice,
	 	·	out of the Transfer Agent Reserve (as defined in the _____ 2019 Instruction),
	 	·	by crediting the designated recipient’s balance account with the Depository Trust Company, identified in the Exercise Notice under “Broker Name,” “Broker DTC#,” “Account Number,” and “Transaction Code Number” through its Deposit Withdrawal at Custodian system


 


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