Document:

Exhibit 10.20

 

VOLTUS, INC.

 

2016 EQUITY INCENTIVE PLAN

 

STOCK OPTION GRANT NOTICE AND

STOCK OPTION AGREEMENT

 

Voltus, Inc. (the “Company”),
pursuant to its 2016 Equity Incentive Plan (the “Plan”), hereby grants to the participant set forth below (“Participant”),
an option (the “Option”) to purchase the number of shares of the Company’s Common Stock (referred to herein as
“Shares”) set forth below. This Option is subject to all of the terms and conditions as set forth herein and in the
Stock Option Agreement attached hereto as Exhibit A (the “Stock Option Agreement”) and the Plan, each of which
is incorporated herein by reference. Unless otherwise defined herein, the terms defined in the Plan shall have the same defined meanings
in this Stock Option Grant Notice and the Stock Option Agreement.

 

	
    Participant:
	 
	Grant Date:	 
	Vesting Commencement Date:	 
	Exercise Price per Share:	$ 	
	Total Exercise Price:	$	
	Total Number of Shares Subject to Option:	 
	Expiration Date:	 

 

	Type of Option:	 ̈ Incentive
Stock Option    ̈ Non-Qualified Stock Option

 

	Vesting Schedule:	[The Option shall vest and become exercisable as to 25% of
the total number of Shares subject to the Option on the first anniversary of the Vesting Commencement Date and as to 1/48th
of the total number of Shares subject to the Option on each monthly anniversary thereafter, so that all of the Shares subject to the
Option shall be fully vested and exercisable on the fourth anniversary of the Vesting Commencement Date, subject to Participant not experiencing
a Termination of Service through each such vesting date.]

 

     

     

    

 

By his or her signature and
the Company’s signature below, Participant agrees to be bound by the terms and conditions of the Plan, the Stock Option Agreement
and this Grant Notice. Participant has reviewed the Stock Option Agreement, the Plan and this Grant Notice in their entirety, has had
an opportunity to obtain the advice of counsel prior to executing this Grant Notice and fully understands all provisions of this Grant
Notice, the Stock Option Agreement and the Plan. Participant hereby agrees to accept as binding, conclusive and final all decisions or
interpretations of the Administrator of the Plan upon any questions arising under the Plan or the Option.

 

	
    Voltus, Inc.:
	 	PARTICIPANT:
	 	 	 
	By:	 	 	By:	              
	Name: 	 	 	Name: 	 
	Title:	     	 	 	     

 

     

     

    

 

Exhibit A

 

TO STOCK OPTION
GRANT NOTICE

 

STOCK OPTION
AGREEMENT

 

Pursuant to the Stock Option
Grant Notice (“Grant Notice”) to which this Stock Option Agreement (this “Agreement”) is attached,
Voltus, Inc. (the “Company”) has granted to Participant an Option under the Company’s 2016 Equity Incentive Plan
(the “Plan”) to purchase the number of Shares indicated in the Grant Notice.

 

1. General.

 

1.1 Defined
Terms. Capitalized terms not specifically defined herein shall have the meanings specified in the Plan and the Grant Notice.

 

1.2 Incorporation
of Terms of Plan. The Option is subject to the terms and conditions of the Plan which are incorporated herein by reference. In the
event of a conflict between the terms of the Agreement and the Plan, the terms of the Plan shall control.

 

1.3 Grant
of Option. In consideration of Participant’s past and/or continued employment with or service to the Company or a parent or
subsidiary and for other good and valuable consideration, effective as of the grant date set forth in the Grant Notice (the “Grant
Date”), the Company irrevocably grants to Participant an Option to purchase any part or all of an aggregate of the number of
Shares set forth in the Grant Notice, upon the terms and conditions set forth in the Plan and this Agreement. Unless designated as a Non-Qualified
Stock Option in the Grant Notice, the Option shall be an Incentive Stock Option to the maximum extent permitted by law.

 

2. Period
of Exercisability.

 

2.1 Vesting;
Commencement of Exercisability.

 

(a) Subject
to Sections 2.1(b) and 2.3 below, the Option shall become vested and exercisable in such amounts and at such times as are set forth in
the vesting schedule in the Grant Notice (the “Vesting Schedule”).

 

(b) Unless
otherwise determined by the Administrator, any portion of the Option that has not become vested and exercisable on or prior to the date
of Participant’s Termination of Service shall be forfeited on the date of Participant’s Termination of Service and shall not
thereafter become vested or exercisable.

 

2.2 Duration
of Exercisability. The installments provided for in the Vesting Schedule are cumulative. Each such installment which becomes vested
and exercisable pursuant to the Vesting Schedule shall remain vested and exercisable until it becomes unexercisable under Section 2.3
below or pursuant to the terms of the Plan. Once the Option becomes unexercisable, it shall be forfeited immediately.

 

    A-1

     

    

 

2.3 Expiration
of Option. The Option may not be exercised to any extent by anyone after the first to occur of the following events:

 

(a) The
Expiration Date set forth in the Grant Notice;

 

(b) The
expiration of three months following the date of Participant’s Termination of Service, unless such Termination of Service occurs
by reason of Participant’s death, Disability or Cause;

 

(c) The
expiration of one year following the date of Participant’s Termination of Service by reason of Participant’s death or Disability;
or

 

(d) The
date of Participant’s Termination of Service for Cause.

 

Participant acknowledges that
an Incentive Stock Option exercised more than three (3) months after Participant’s Termination of Service as an Employee, other
than by reason of death or Disability, will be taxed as a Non-Qualified Stock Option.

 

2.4 Special
Tax Consequences. Participant acknowledges that, to the extent that the aggregate Fair Market Value (determined as of the time the
Option is granted) of all Shares with respect to which Incentive Stock Options, including the Option, are first exercisable for the first
time by Participant in any calendar year exceeds $100,000 (or such other limitation as imposed by Section 422(d) of the Code), the Option
and such other options shall be treated as not qualifying under Section 422 of the Code but rather shall be considered Non-Qualified
Stock Options. Participant further acknowledges that the rule set forth in the preceding sentence shall be applied by taking Options and
other “incentive stock options” into account in the order in which they were granted.

 

3. Exercise
of Option.

 

3.1 Person
Eligible to Exercise. Except as may be otherwise provided by the Administrator, during the lifetime of Participant, only Participant
may exercise the Option or any portion thereof. After the death of Participant, any exercisable portion of the Option may, prior to the
time when the Option becomes unexercisable under Section 2.3, be exercised by Participant’s personal representative or by any person
empowered to do so under the deceased Participant’s will or under the then applicable laws of descent and distribution.

 

3.2 Partial
Exercise. Any exercisable portion of the Option or the entire Option, if then wholly exercisable, may be exercised in whole or in
part at any time prior to the time when the Option or portion thereof becomes unexercisable under Section 2.3.

 

3.3 Manner
of Exercise. The Option, or any exercisable portion thereof, may be exercised solely by delivery to the Secretary of the Company or
the Secretary’s office, or such other place as may be determined by the Administrator, of all of the following prior to the time
when the Option or such portion thereof becomes unexercisable under Section 2.3 above:

 

(a) An
exercise notice in substantially in the form attached as Exhibit B to the Grant Notice (or such other form as is prescribed by
the Administrator) (the “Exercise Notice”) in writing signed by Participant or any other person then entitled to exercise
the Option or portion thereof, stating that the Option or portion thereof is thereby exercised, such notice complying with all Applicable
Laws established by the Administrator;

 

    A-2

     

    

 

(b) Subject
to Section 5.6 of the Plan:

 

(i) Full
payment (in cash or by check) for the Shares with respect to which the Option or portion thereof is exercised; or

 

(ii) With
the consent of the Administrator, by delivery of Shares then issuable upon exercise of the Option having a Fair Market Value on the date
of delivery equal to the aggregate exercise price of the Option or exercised portion thereof; or

 

(iii) On
and after the date the Company becomes a Publicly Listed Company, through the (A) delivery by Participant to the Company of an irrevocable
and unconditional undertaking by a broker acceptable to the Company to deliver promptly to the Company sufficient funds to pay the exercise
price or (B) delivery by Participant to the Company of a copy of irrevocable and unconditional instructions to a broker acceptable to
the Company to deliver promptly to the Company cash or a check sufficient to pay the exercise price; provided that payment is then
made to the Company at such time as may be required by the Administrator; or

 

(iv) With
the consent of the Administrator, any other method of payment permitted under the terms of the Plan; or

 

(v) Subject
to any Applicable Laws, any combination of the consideration allowed under the foregoing paragraphs;

 

(c) The
receipt by the Company of full payment for any applicable withholding tax in cash or by check or in the form of consideration permitted
by the Administrator, which, following the date the Company becomes a Publicly Listed Company shall include the method provided for in
Section 5.6(a) of the Plan;

 

(d) If
the Company is a not a Publicly Listed Company, the Investment Representation Statement in the form attached as Exhibit B-1
to the Exercise Notice executed by Participant; and

 

(e) In
the event the Option or portion thereof shall be exercised pursuant to Section 3.1 above by any person or persons other than Participant,
appropriate proof of the right of such person or persons to exercise the Option.

 

4. Other
Provisions.

 

4.1 Restrictive
Legends and Stop-Transfer Orders.

 

(a) Participant
agrees that, in order to ensure compliance with the restrictions referred to herein, the Company may issue appropriate “stop transfer”
instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make appropriate notations to
the same effect in its own records.

 

    A-3

     

    

 

(b) The
Company shall not be required: (i) to transfer on its books any Shares that have been sold or otherwise transferred in violation of any
of the provisions of this Agreement, or (ii) to treat as owner of such Shares or to accord the right to vote or pay dividends to any purchaser
or other transferee to whom such shares shall have been so transferred.

 

4.2 Notices.
Any notice to be given under the terms of this Agreement to the Company shall be addressed to the Company at its principal executive offices
in care of the Secretary of the Company, and any notice to be given to Participant shall be addressed to Participant at the most recent
address for Participant shown in the Company’s records. By a notice given pursuant to this Section 4.2, either party may hereafter
designate a different address for notices to be given to that party. Any notice which is required to be given to Participant shall, if
Participant is then deceased, be given to the person entitled to exercise his or her Option by written notice under this Section 4.2.
Any notice shall be deemed duly given when sent via email or when sent by certified mail (return receipt requested) and deposited (with
postage prepaid) in a post office or branch post office regularly maintained by the United States Postal Service.

 

4.3 Titles.
Titles are provided herein for convenience only and are not to serve as a basis for interpretation or construction of this Agreement.

 

4.4 Submission
to Jurisdiction; Waiver of Jury Trial. By accepting this Option, the Participant irrevocably and unconditionally consents to submit
to the exclusive jurisdiction of the courts of the State of Massachusetts and of the United States of America, in each case located in
the State of Massachusetts, for any action arising out of or relating to the Plan and this Option (and agrees not to commence any litigation
relating thereto except in such courts), and further agrees that service of any process, summons, notice or document by U.S. registered
mail to the address contained in the records of the Company shall be effective service of process for any litigation brought against it
in any such court. By accepting this Option, the Participant irrevocably and unconditionally waives any objection to the laying of venue
of any litigation arising out of Plan or the Option in the courts of the State of Massachusetts or the United States of America, in each
case located in the State of Massachusetts, and further irrevocably and unconditionally waives and agrees not to plead or claim in any
such court that any such litigation brought in any such court has been brought in an inconvenient forum. By accepting this Option, the
Participant irrevocably and unconditionally waives, to the fullest extent permitted by applicable law, any and all rights to trial by
jury in connection with any litigation arising out of or relating to the Plan or the Option.

 

4.5 Governing
Law; Severability. This Agreement and the Exercise Notice shall be administered, interpreted and enforced under the laws of the State
of Delaware, without regard to the conflicts of law principles thereof. Should any provision of this Agreement be determined by a court
of law to be illegal or unenforceable, the other provisions shall nevertheless remain effective and shall remain enforceable.

 

4.6 Conformity
to Securities Laws. Participant acknowledges that the Plan is intended to conform to the extent necessary with all provisions of the
Securities Act and the Exchange Act and any and all regulations and rules promulgated by the Securities and Exchange Commission thereunder,
and state securities laws and regulations. Notwithstanding anything herein to the contrary, the Plan shall be administered, and the Option
is granted and may be exercised, only in such a manner as to conform to such laws, rules and regulations. To the extent permitted by Applicable
Laws, the Plan and this Agreement shall be deemed amended to the extent necessary to conform to such laws, rules and regulations.

 

    A-4

     

    

 

4.7 Successors
and Assigns. The Company may assign any of its rights under this Agreement and the Exercise Notice to single or multiple assignees,
and this Agreement shall inure to the benefit of the successors and assigns of the Company. Subject to the restrictions on transfer herein
set forth, this Agreement shall be binding upon Participant and his or her heirs, executors, administrators, successors and assigns.

 

4.8 Entire
Agreement. The Plan, this Agreement (including all Exhibits hereto) and any written employment agreement (including an offer letter)
between Participant and the Company providing for acceleration of vesting of equity awards upon certain events constitute the entire agreement
of the parties and supersede in their entirety all prior undertakings and agreements of the Company and Participant with respect to the
subject matter hereof.

 

* * * * *

 

    A-5

     

    

 

Exhibit B

 

TO STOCK OPTION
GRANT NOTICE

 

FORM OF EXERCISE
NOTICE

 

Effective as of today, , ,
the undersigned (“Participant”) hereby elects to exercise Participant’s option to purchase Shares of Voltus,
Inc. (the “Company”) under and pursuant to the Company’s 2016 Equity Incentive Plan (the “Plan”)
and the Stock Option Grant Notice and Stock Option Agreement dated , ____ (the “Option Agreement”). Capitalized terms
used herein without definition shall have the meanings given in the Option Agreement.

 

	
    Grant Date:
	 	
	Number of Shares as to which Option is Exercised:	 
	Exercise Price per Share:	$	
	Total Exercise Price:	$	
	Certificate to be issued or book entry to be made in name of:	 	
     

    

	Cash Payment delivered herewith:	$______________ (Representing the full Exercise Price for the Shares, as well as any applicable withholding tax)

 

	Type of Option:	 ̈ Incentive
Stock Option    ̈ Non-Qualified Stock Option

 

1. Representations
of Participant. Participant acknowledges that Participant has received, read and understood the Plan and the Option Agreement. Participant
agrees to abide by and be bound by their terms and conditions.

 

2. Tax
Consultation. Participant understands that Participant
may suffer adverse tax consequences as a result of Participant’s purchase or disposition of the Shares. Participant represents that
Participant has consulted with any tax consultants Participant deems advisable in connection with the purchase or disposition of the Shares
and that Participant is not relying on the Company for any tax advice. Participant is relying solely on such advisors and not on any statements
or representations of the Company or any of its agents. Participant understands that Participant (and not the Company) shall be responsible
for Participant’s tax liability that may arise as a result of this investment or the transactions contemplated by this Agreement.

 

3. Restrictive
Legends and Stop-Transfer Orders.

 

3.1 Legends.
Participant understands and agrees that the Company shall cause any certificates issued evidencing the Shares to have the legends set
forth below or legends substantially equivalent thereto, together with any other legends that may be required by state or federal securities
laws:

 

THE SHARES REPRESENTED HEREBY HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (“ACT”), NOR HAVE THEY BEEN REGISTERED OR QUALIFIED UNDER THE
SECURITIES LAWS OF ANY STATE. NO TRANSFER OF SUCH SECURITIES WILL BE PERMITTED UNLESS A REGISTRATION STATEMENT UNDER THE ACT IS IN EFFECT
AS TO SUCH TRANSFER, THE TRANSFER IS MADE IN ACCORDANCE WITH RULE 144 UNDER THE ACT, OR IN THE OPINION OF COUNSEL (WHICH MAY BE COUNSEL
FOR THE COMPANY) REGISTRATION UNDER THE ACT IS UNNECESSARY IN ORDER FOR SUCH TRANSFER TO COMPLY WITH THE ACT AND WITH APPLICABLE STATE
SECURITIES LAWS.

 

    B-1

     

    

 

THE SHARES REPRESENTED BY THIS CERTIFICATE
ARE SUBJECT TO CERTAIN RESTRICTIONS ON TRANSFER AND A RIGHT OF FIRST REFUSAL HELD BY THE ISSUER OR ITS ASSIGNEE(S) AS SET FORTH IN THE
PLAN PURSUANT TO WHICH THESE SHARES WERE ISSUED, A COPY OF WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE ISSUER. SUCH TRANSFER
RESTRICTIONS AND RIGHT OF FIRST REFUSAL ARE BINDING ON TRANSFEREES OF THESE SHARES.

 

3.2 Participant
agrees that, in order to ensure compliance with the restrictions referred to herein, the Company may issue appropriate “stop transfer”
instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make appropriate notations to the
same effect in its own records.

 

3.3 The
Company shall not be required (i) to transfer on its books any Shares that have been sold or otherwise transferred in violation of
any of the provisions of this Agreement or (ii) to treat as owner of such Shares or to accord the right to vote or pay dividends
to any purchaser or other transferee to whom such Shares shall have been so transferred.

 

4. Notices.
Any notice required or permitted hereunder shall be given in accordance with the provisions set forth in Section 4.2 of the Option Agreement.

 

5. Further
Instruments. Participant hereby agrees to execute such further instruments, including, without limitation, the Investment Representation
Statement in the form attached hereto as Exhibit B-1, and to take such further action as the Company determines are reasonably
necessary to carry out the purposes and intent of this Agreement.

 

6. Entire
Agreement. The Plan, the Investment Representation Statement in the form attached hereto as Exhibit B-1, the Option Agreement
and any written employment agreement (including an offer letter) between Participant and the Company providing for acceleration of vesting
of equity awards upon certain events are incorporated herein by reference. This Agreement, the Plan, the Investment Representation Statement
in the form attached hereto as Exhibit B-1, the Option Agreement and any written employment agreement (including an offer letter)
between Participant and the Company providing for acceleration of vesting of equity awards upon certain events constitute the entire agreement
of the parties and supersede in their entirety all prior undertakings and agreements of the Company and Participant with respect to the
subject matter hereof.

 

	
    ACCEPTED BY:

Voltus, Inc. 
	 	SUBMITTED BY 

PARTICIPANT:
	 	 	 
	By:	                   	 	By:	                            
	Print Name: 	 	 	Print Name: 	 
	 	 	Address:	 
	 	 	 
	 	 	 

 

    B-2

     

    

 

Exhibit B-1

 

TO EXERCISE NOTICE

 

INVESTMENT REPRESENTATION STATEMENT

 

	PARTICIPANT:	 
	 	 
	COMPANY :	Voltus, Inc.
	 	 
	SECURITY :	COMMON STOCK
	 	 
	AMOUNT :	 
	 	 
	DATE :	 

 

In connection with the purchase
of the above-listed shares of Common Stock (the “Securities”) of Voltus, Inc. (the “Company”), the
undersigned (“Participant”) represents to the Company the following:

 

1. Participant
is aware of the Company’s business affairs and financial condition and has acquired sufficient information about the Company to
reach an informed and knowledgeable decision to acquire the Securities. Participant is acquiring these Securities for investment for Participant’s
own account only and not with a view to, or for resale in connection with, any “distribution” thereof within the meaning of
the United States Securities Act of 1933, as amended (the “Securities Act”).

 

2. Participant
acknowledges and understands that the Securities constitute “restricted securities” under the Securities Act and have not
been registered under the Securities Act in reliance upon a specific exemption therefrom, which exemption depends upon, among other things,
the bona fide nature of Participant’s investment intent as expressed herein. In this connection, Participant understands that, in
the view of the United States Securities and Exchange Commission, the statutory basis for such exemption may be unavailable if Participant’s
representation was predicated solely upon a present intention to hold these Securities for the minimum capital gains period specified
under tax statutes, for a deferred sale, for or until an increase or decrease in the market price of the Securities, or for a period of
one year or any other fixed period in the future. Participant further understands that the Securities must be held indefinitely unless
they are subsequently registered under the Securities Act or an exemption from such registration is available. Participant further acknowledges
and understands that the Company is under no obligation to register the Securities. Participant understands that any certificate evidencing
the Securities will be imprinted with a legend which prohibits the transfer of the Securities unless they are registered or such registration
is not required in the opinion of counsel satisfactory to the Company and any other legend required under applicable securities laws or
agreements.

 

3. Participant
is familiar with the provisions of Rule 701 and Rule 144, each promulgated under the Securities Act, which, in substance, permit
limited public resale of “restricted securities” acquired, directly or indirectly from the issuer thereof, in a non-public
offering subject to the satisfaction of certain conditions. Rule 701 provides that if the issuer qualifies under Rule 701 at
the time of the grant of the Option to Participant, the exercise will be exempt from registration under the Securities Act. In the event
the Company becomes subject to the reporting requirements of Section 13 or 15(d) of the United States Securities Exchange Act of
1934, ninety (90) days thereafter (or such longer period as any market stand-off agreement may require) the Securities exempt under Rule 701
may under present law be resold, subject to the satisfaction of certain of the conditions specified by Rule 144, including: (1) the
resale being made through a broker in an unsolicited “broker’s transaction” or in transactions directly with a
market maker (as said term is defined under the United States Securities Exchange Act of 1934); and, in the case of an affiliate, (2) the
availability of certain public information about the Company, (3) the amount of Securities being sold during any three (3) month period
not exceeding the limitations specified in Rule 144(e), and (4) the timely filing of a Form 144, if applicable.

 

    B-1-1

     

    

 

In the event that the Company
does not qualify under Rule 701 at the time of grant of the Option, then the Securities may be resold in certain limited circumstances
subject to the provisions of Rule 144, which, effective as of February 15, 2008, requires the resale to occur not less than
six months, or, in the event the Company is not subject to the reporting requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, not less than one year, after the later of the date the Securities were sold by the Company or the date the Securities were
sold by an affiliate of the Company, within the meaning of Rule 144; and, in the case of acquisition of the Securities by an affiliate,
the satisfaction of the conditions set forth in sections (1), (2), (3) and (4) of the paragraph immediately above or, in the case of a
non-affiliate who subsequently hold the Securities less than one year, the satisfaction of the conditions set forth in section (2) of
the paragraph immediately above.

 

4. Participant
further understands that in the event all of the applicable requirements of Rule 701 or 144 are not satisfied, registration under
the Securities Act, compliance with Regulation A, or some other registration exemption will be required; and that, notwithstanding the
fact that Rules 144 and 701 are not exclusive, the Staff of the United States Securities and Exchange Commission has expressed its opinion
that persons proposing to sell private placement securities other than in a registered offering and otherwise than pursuant to Rules 144
or 701 will have a substantial burden of proof in establishing that an exemption from registration is available for such offers or sales,
and that such persons and their respective brokers who participate in such transactions do so at their own risk. Participant understands
that no assurances can be given that any such other registration exemption will be available in such event.

 

		Signature of Participant:
	 	 
	 	 
	 	 
		Date: _______________________, ______

 

 

B-1-2Exhibit 10.21

 

Voltus,
Inc. 

 

2016
EQUITY INCENTIVE PLAN 

 

STOCK
PURCHASE RIGHT GRANT NOTICE AND

RESTRICTED STOCK PURCHASE AGREEMENT

 

Pursuant
to its 2016 Equity Incentive Plan (the “Plan”), Voltus, Inc., a Delaware corporation (the “Company”),
hereby grants to the Purchaser listed below (“Purchaser”), the right to purchase the number of shares of the Company’s
Common Stock set forth below (the “Shares”) at the purchase price set forth below (the “Stock Purchase Right”).
This Stock Purchase Right is subject to all of the terms and conditions set forth herein, in the Plan and in the certain Restricted Stock
Purchase Agreement attached hereto as Exhibit A (the “Restricted Stock Purchase Agreement”), each of which
is incorporated herein by reference. Unless otherwise defined herein, the terms defined in the Plan shall have the same defined meanings
in this Stock Purchase Right Grant Notice (the “Grant Notice”) and the Restricted Stock Purchase Agreement.

 

	Purchaser:	__________________________________
	Date
    of Grant:	__________________________________
	Vesting
    Start Date: 	__________________________________
	Purchase
    Price per Share:	__________________________________
	Number
    of Shares:	__________________________________
	Vesting
    Schedule:	The
                                            Shares subject to this Stock Purchase Right shall vest and be released from the Company’s
                                            Repurchase Option, as set forth in the Restricted Stock Purchase Agreement, according to
                                            the following schedule:

     

    [25%
    of the Shares shall be released from the Company’s Repurchase Option (as defined in the Restricted Stock Purchase Agreement)
    on the first anniversary of the Vesting Start Date and 1/48 of the Shares shall be released from the Repurchase Option on each monthly
    anniversary thereafter, so that 100% of the Shares shall be released from such Repurchase Option on the fourth (4th) anniversary
    of the Vesting Start Date, subject to Purchaser not experiencing a Termination of Service through each such vesting date.]

     

	Termination
    Date:	This
    Stock Purchase Right shall terminate if not exercised prior to the thirty-first (31st) day following the Date of Grant
    set forth above.

 

By
his or her signature and the Company’s signature below, Purchaser agrees to be bound by the terms and conditions of the Plan, the
Restricted Stock Purchase Agreement and this Grant Notice. Purchaser has reviewed the Restricted Stock Purchase Agreement, the Plan and
this Grant Notice in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Grant Notice and
fully understands the provisions of this Grant Notice, the Restricted Stock Purchase Agreement and the Plan. Purchaser hereby agrees
to accept as binding, conclusive and final all decisions or interpretations of the Administrator of the Plan upon any questions arising
under the Plan, this Grant Notice or the Restricted Stock Purchase Agreement. To the extent the Shares are issued in uncertificated form,
Purchaser also acknowledges and agrees that the Restricted Stock Purchase Agreement constitutes the notice required by Section 151(f)
of the Delaware General Corporation Law. If Purchaser is married or in a registered domestic partnership, his or her spouse or registered
domestic partner has signed the Consent of Spouse or Domestic Partner attached to this Grant Notice as Exhibit D.

 

	Voltus,
    Inc.:	 	PURCHASER:
	 	 	 
	By:	 	 	By:	 
	Print Name: 	   	 	Print Name: 	    
	Title:	 	 	Title:	 
	Address:	 	 	Address:	 

 

Signature Page to Voltus, Inc. Stock Purchase
Right Grant Notice

 

     

     

    

 

Exhibit
A

 

To
STOCK PURCHASE RIGHT GRANT NOTICE

 

RESTRICTED
STOCK PURCHASE AGREEMENT

 

Pursuant
to the Stock Purchase Right Grant Notice (the “Grant Notice”) to which this Restricted Stock Purchase Agreement (this
“Agreement”) is attached, Voltus, Inc., a Delaware corporation (the “Company”), has granted to
Purchaser (as defined in the Grant Notice) the right to purchase the number of shares of Restricted Stock under the Company’s 2016
Equity Incentive Plan (the “Plan”) indicated in the Grant Notice.

 

1. General.

 

1.1 Defined
Terms. Capitalized terms not specifically defined herein shall have the meanings specified in the Plan and the Grant Notice.

 

1.2 Incorporation
of Terms of Plan. The Shares are subject to the terms and conditions of the Plan, which is incorporated herein by reference.

 

2. Grant
of Restricted Stock.

 

2.1 Grant
of Restricted Stock. In consideration of Purchaser’s agreement to remain in the employ of the Company or its subsidiaries,
if Purchaser is an Employee, or to continue to provide services to the Company or its subsidiaries, if Purchaser is a Consultant, or
to serve as a Director, if Purchaser is a Director, and for other good and valuable consideration, effective as of the Date of Grant
set forth in the Grant Notice (the “Grant Date”), the Company irrevocably grants to Purchaser the right to purchase
the Shares at any time prior to the Termination Date set forth in the Grant Notice, upon the terms and conditions set forth in the Plan
and this Agreement.

 

2.2 Purchase
Price. The purchase price of the Shares shall be as set forth in the Grant Notice, without commission or other charge (the “Purchase
Price”). Unless otherwise determined by the Administrator and in accordance with the terms of the Plan, the Purchase Price
shall be paid by cash or check.

 

2.3 Issuance
of Shares. The issuance of the Shares under this Agreement shall occur at the principal office of the Company simultaneously with
the execution of this Agreement by the parties or on such other date as the Company and Purchaser shall agree (the “Issuance
Date”). Subject to the provisions of Section 3 below, on the Issuance Date, the Company shall issue the Shares (which shall
be issued in Purchaser’s name).

 

    A-1

     

    

 

2.4 Conditions
to Issuance of Shares. The Shares, or any portion thereof, may be either previously authorized but unissued shares or issued shares
which have then been reacquired by the Company. Such Shares shall be fully paid and nonassessable. The Company shall not be required
to issue or deliver any Shares prior to fulfillment of all of the following conditions:

 

(a) The
admission of such Shares to listing on all stock exchanges on which the Company’s Common Stock is then listed; and

 

(b) The
completion of any registration or other qualification of such shares under any state or federal law or under rulings or regulations of
the Securities and Exchange Commission or of any other governmental regulatory body, which the Administrator shall, in its absolute discretion,
deem necessary or advisable; and

 

(c) The
obtaining of any approval or other clearance from any state or federal governmental agency which the Administrator shall, in its absolute
discretion, determine to be necessary or advisable; and

 

(d) The
receipt by the Company of full payment for such Shares, including payment of all amounts which, under federal, state or local tax law,
the Company (or other employer corporation) is required to withhold upon issuance of such Shares; and

 

(e) The
lapse of such reasonable period of time following the Issuance Date as the Administrator may from time to time establish for reasons
of administrative convenience.

 

2.5 Consideration
to the Company. In consideration of the issuance of the Shares by the Company, Purchaser agrees to render faithful and efficient
services to the Company or any subsidiary. Nothing in the Plan or this Agreement shall confer upon Purchaser any right to (a) continue
in the employ of the Company or any subsidiary or shall interfere with or restrict in any way the rights of the Company and its subsidiaries,
which are hereby expressly reserved, to discharge Purchaser, if Purchaser is an Employee, or (b) continue to provide services to the
Company or any subsidiary or shall interfere with or restrict in any way the rights of the Company or its subsidiaries, which are hereby
expressly reserved, to terminate the services of Purchaser, if Purchaser is a Consultant, at any time for any reason whatsoever, with
or without cause, except to the extent expressly provided otherwise in a written agreement between the Company and Purchaser.

 

3. Repurchase
Option.

 

3.1 If
Purchaser ceases to be a Service Provider for any reason, including for cause, death and Disability, the Company or its assignee shall
have the right and option to purchase from Purchaser, or Purchaser’s personal representative, as the case may be, all of Purchaser’s
Unreleased Shares (as defined below) as of the date on which Purchaser ceases to be a Service Provider at the purchase price paid by
Purchaser for such Shares in connection with the Stock Purchase Rights (the “Repurchase Option”).

 

3.2 The
Company may exercise its Repurchase Option by delivering, personally or by registered mail, to Purchaser (or his or her transferee or
legal representative, as the case may be), within ninety (90) days of the date on which Purchaser ceases to be a Service Provider, a
notice in writing indicating the Company’s intention to exercise the Repurchase Option and setting forth a date for closing not
later than thirty (30) days from the mailing of such notice. The closing shall take place at the Company’s office. At the closing,
the holder of any certificates for the Unreleased Shares being transferred shall deliver the stock certificate or certificates evidencing
the Unreleased Shares, and the Company shall deliver the purchase price therefor.

 

    A-2

     

    

 

3.3 At
its option, the Company may elect to make payment for the Unreleased Shares to a bank selected by the Company. The Company shall avail
itself of this option by a notice in writing to Purchaser stating the name and address of the bank, date of closing, and waiving the
closing at the Company’s office.

 

3.4 If
the Company does not elect to exercise the Repurchase Option conferred above by giving the requisite notice within ninety (90) days following
the date on which Purchaser ceases to be a Service Provider, the Repurchase Option shall terminate.

 

3.5 One
hundred percent (100%) of the Shares shall initially be subject to the Repurchase Option. The Shares shall be released from the Repurchase
Option in accordance with the Vesting Schedule set forth in the Grant Notice until all Shares are released from the Repurchase Option.
Fractional Shares shall be rounded to the nearest whole share.

 

3.6 Any
Shares which from time to time have not yet been released from the Company’s Repurchase Option pursuant to Section 3.5 above shall
be referred to herein as “Unreleased Shares.”

 

4. Transferability
of the Shares; Escrow.

 

4.1 Purchaser
hereby authorizes and directs the Secretary of the Company, or such other person designated by the Company from time to time, to transfer
the Unreleased Shares as to which the Repurchase Option has been exercised from Purchaser to the Company.

 

4.2 To
ensure the availability for delivery of Purchaser’s Unreleased Shares upon repurchase by the Company pursuant to the Repurchase
Option under Section 3 above, Purchaser hereby appoints the Secretary, or any other person designated by the Company from time to
time as escrow agent, as its attorney-in-fact to sell, assign and transfer unto the Company, such Unreleased Shares, if any, repurchased
by the Company pursuant to the Repurchase Option and shall, upon execution of this Agreement, deliver and deposit with the Secretary
of the Company, or such other person designated by the Company from time to time, any share certificate(s) representing the Unreleased
Shares, together with the stock assignment duly endorsed in blank, attached hereto as Exhibit B. The Unreleased Shares and stock
assignment shall be held by the Secretary, or such other person designated by the Company from time to time, in escrow, pursuant to the
Joint Escrow Instructions of the Company and Purchaser attached as Exhibit C hereto, until the Company exercises its Repurchase
Option as provided in Section 3 above, until such Unreleased Shares are vested, or until such time as the Repurchase Option no longer
is in effect. As a further condition to the Company’s obligations under this Agreement, the spouse or registered domestic partner
of Purchaser, if any, shall execute and deliver to the Company the Consent of Spouse or Domestic Partner attached hereto as Exhibit
D. Upon vesting of the Unreleased Shares, the escrow agent shall promptly deliver to Purchaser any certificate or certificates representing
such Shares in the escrow agent’s possession belonging to Purchaser, and the escrow agent shall be discharged of all further obligations
hereunder; provided, however, that the escrow agent shall nevertheless retain such certificate or certificates, if any,
as escrow agent if so required pursuant to other restrictions imposed pursuant to this Agreement.

 

    A-3

     

    

 

4.3 The
Company, or its designee, shall not be liable for any act it may do or omit to do with respect to holding the Shares in escrow and while
acting in good faith and in the exercise of its judgment.

 

4.4 Transfer
or sale of the Shares is subject to restrictions on transfer imposed by Section 5 of this Agreement and any applicable state and federal
securities laws. Any transferee shall hold such Shares subject to all of the provisions hereof and shall acknowledge the same by signing
a copy of this Agreement. Any transfer or attempted transfer of any of the Shares not in accordance with the terms of this Agreement
shall be void and the Company may enforce the terms of this Agreement by stop transfer instructions or similar actions by the Company
and its agents or designees.

 

5. Purchaser’s
Rights to Transfer Shares.

 

5.1 Company’s
Right of First Refusal. Before any Shares held by Purchaser or any permitted transferee (each, a “Holder”) may
be sold, pledged, assigned, hypothecated, transferred, or otherwise disposed of (each, a “Transfer”), the Company
or its assignee(s) shall have a right of first refusal to purchase the Shares proposed to be Transferred on the terms and conditions
set forth in this Section 5 (the “Right of First Refusal”). In the event the Company’s charter, bylaws and/or
a stockholders’ agreement applicable to the Shares contain a right of first refusal with respect to the Shares, such right of first
refusal shall apply to the Shares to the extent such provisions are more restrictive than the Right of First Refusal set forth in this
Section 5 and the Right of First Refusal set forth in this Section 5 shall not in any way restrict the operation of the Company’s
charter, bylaws or the operation of any applicable stockholders’ agreement.

 

(a) Notice
of Proposed Transfer. In the event any Holder desires to Transfer any Shares, the Holder shall deliver to the Company a written notice
(the “Notice”) stating: (A) the Holder’s bona fide intention to sell or otherwise Transfer such Shares;
(B) the name of each proposed purchaser or other transferee (“Proposed Transferee”); (C) the number of Shares
to be Transferred to each Proposed Transferee; and (D) the price for which the Holder proposes to Transfer the Shares (the “Offered
Price”), and the Holder shall offer such Shares at the Offered Price to the Company or its assignee(s).

 

(b) Exercise
of Right of First Refusal. Within twenty-five (25) days after receipt of the Notice, the Company and/or its assignee(s) may elect
in writing to purchase all, but not less than all, of the Shares proposed to be Transferred to any one or more of the Proposed Transferees
by delivery of a written exercise notice to the Holder. The purchase price shall be determined in accordance with Section 5.1(c)
hereof.

 

(c) Purchase
Price. The purchase price (“Repurchase Price”) for the Shares repurchased under this Section 5 shall be the Offered
Price. Should the Offered Price specified in the Notice be payable in property other than cash, the Company or its assignee shall have
the right to pay the purchase price in the form of cash equal in amount to the value of such property, as determined by the Administrator.

 

    A-4

     

    

 

(d) Payment.
Payment of the Repurchase Price shall be made, at the option of the Company or its assignee(s), in cash (by check or wire transfer),
by cancellation of all or a portion of any outstanding indebtedness of the Holder to the Company (or, in the case of repurchase by an
assignee, to the assignee), or by any combination thereof within five (5) days after receipt of the Notice or in the manner and at the
times mutually agreed to by the Company and the Holder.

 

(e) Holder’s
Right to Transfer. If all of the Shares proposed in the Notice to be Transferred are not purchased by the Company and/or its assignee(s)
as provided in this Section 5, then the Holder may sell or otherwise Transfer such Shares to that Proposed Transferee at the Offered
Price or at a higher price, provided that such sale or other Transfer is consummated within sixty (60) days after the date
of the Notice and provided further that any such sale or other Transfer is effected in accordance with any Applicable Laws and
the Proposed Transferee agrees in writing that the provisions of this Section 5 and the Restricted Stock Purchase Agreement, if applicable,
shall continue to apply to the Shares in the hands of such Proposed Transferee. If the Shares described in the Notice are not Transferred
to the Proposed Transferee within such 60-day period, a new Notice shall be given to the Company, and the Company and/or its assignees
shall again be offered the Right of First Refusal as provided herein before any Shares held by the Holder may be sold or otherwise Transferred.

 

5.2 Exception
for Certain Family Transfers. Anything to the contrary contained in this Section 5 notwithstanding and to the extent permitted by
the Administrator, the Transfer of any or all of the Shares during Purchaser’s lifetime or upon Purchaser’s death by will
or intestacy to Purchaser’s Immediate Family or a trust for the benefit of Purchaser’s Immediate Family shall be exempt from
the Right of First Refusal. As used herein, “Immediate Family” shall mean spouse, lineal descendant or antecedent,
father, mother, brother or sister or stepchild (whether or not adopted). In such case, the transferee or other recipient shall receive
and hold the Shares so Transferred subject to the provisions of the Plan, this Agreement and any other applicable agreements, and there
shall be no further Transfer of such Shares except in accordance with the terms of this Section 5 (or otherwise as expressly provided
under the Plan).

 

5.3 Termination
of Right of First Refusal. The Right of First Refusal shall terminate as to all Shares if the Company becomes a Publicly Listed Company
upon such occurrence.

 

6. Ownership,
Voting Rights, Duties. This Agreement shall not affect in any way the ownership, voting rights or other rights or duties of Purchaser,
except as specifically provided herein.

 

7. Adjustment
for Stock Split. All references to the number of Shares and the purchase price of the Shares in this Agreement shall be appropriately
adjusted to reflect any stock split, stock dividend or other change in the Shares which may be made by the Company after the date of
this Agreement.

 

    A-5

     

    

 

8. Notices.
Notices required hereunder shall be given in person or by registered mail to the address of Purchaser shown on the records of the Company,
and to the Company at its principal executive office.

 

9. Survival
of Terms. This Agreement shall apply to and bind Purchaser and the Company and their respective permitted assignees and transferees,
heirs, legatees, executors, administrators and legal successors.

 

10. Section
83(b) Election for Unreleased Shares. Purchaser hereby acknowledges that he or she has been informed that, with respect to the purchase
of Unreleased Shares, that unless an election is filed by Purchaser with the Internal Revenue Service and, if necessary, the proper state
taxing authorities, within thirty (30) days of the purchase of the Shares, electing pursuant to Section 83(b) of the Code (and
similar state tax provisions if applicable) to be taxed currently on any difference between the purchase price of the Shares and their
Fair Market Value on the date of purchase, there will be a recognition of taxable income to Purchaser, measured by the excess, if any,
of the fair market value of the Shares, at the time the Company’s Repurchase Option lapses over the purchase price for the Shares.
Purchaser represents that Purchaser has consulted any tax consultant(s) Purchaser deems advisable in connection with the purchase of
the Shares or the filing of the Election under Section 83(b) and similar tax provisions.

 

PURCHASER
ACKNOWLEDGES THAT IT IS PURCHASER’S SOLE RESPONSIBILITY AND NOT THE COMPANY’S TO FILE TIMELY THE ELECTION UNDER SECTION 83(b),
EVEN IF PURCHASER REQUESTS THE COMPANY OR ITS REPRESENTATIVE TO MAKE THIS FILING ON PURCHASER’S BEHALF. 

 

11. Representations.
Purchaser has reviewed with his or her own tax advisors the federal, state, local and foreign tax consequences of this investment and
the transactions contemplated by this Agreement. Purchaser is relying solely on such advisors and not on any statements or representations
of the Company or any of its agents. Purchaser understands that Purchaser (and not the Company) shall be responsible for his or her own
tax liability that may arise as a result of this investment or the transactions contemplated by this Agreement.

 

    A-6

     

    

 

12. Restrictive
Legends and Stop-Transfer Orders.

 

12.1 Any
share certificate(s) evidencing the Shares issued hereunder shall be endorsed with the following legends and any other legends
that may be required by state or federal securities laws:

 

THE
SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO A RIGHT OF REPURCHASE IN FAVOR OF Voltus,
Inc. (THE “COMPANY”) AND MAY BE TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF A RESTRICTED STOCK PURCHASE AGREEMENT
BETWEEN THE COMPANY AND THE STOCKHOLDER, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY.

 

THE
SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”),
AND THEY HAVE BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF. NO SUCH SALE
OR DISTRIBUTION MAY BE EFFECTED WITHOUT AN EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL IN A FORM SATISFACTORY
TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT.

 

THE
SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO A RIGHT OF FIRST REFUSAL IN FAVOR OF THE COMPANY AND/OR ITS ASSIGNEE(S) AND TRANSFER
RESTRICTIONS AS PROVIDED IN THE BYLAWS OF THE COMPANY THAT PROVIDES FOR TRANSFER RESTRICTIONS AT THE DISCRETION OF THE COMPANY. SUCH
RIGHT OF FIRST REFUSAL AND TRANSFER RESTRICTIONS ARE BINDING UPON TRANSFEREES OF THESE SECURITIES. COPIES OF THE BYLAWS OF THE COMPANY
MAY BE OBTAINED UPON WRITTEN REQUEST TO THE SECRETARY OF THE COMPANY.

 

The
Company may be authorized from time to time pursuant to its certificate of incorporation to issue more than 1 class or series of stock.
In such case and at any time or from time to time thereafter the Company will furnish without charge to you upon request the powers,
designations, preferences and relative participating, optional or other special rights of each class of stock or series thereof and the
qualifications, limitations or restrictions of such preferences and/or rights.

 

12.2 Purchaser
agrees that, in order to ensure compliance with the restrictions referred to herein, the Company may issue appropriate “stop transfer”
instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make appropriate notations
to the same effect in its own records.

 

12.3 The
Company shall not be required: (i) to transfer on its books any Shares that have been sold or otherwise transferred in violation of any
of the provisions of this Agreement, or (ii) to treat as owner of such Shares or to accord the right to vote or pay dividends to any
purchaser or other transferee to whom such Shares shall have been so transferred.

 

12.4 To
the extent the Shares are issued in uncertificated form, this Section 12 provides the Purchaser with notice that the Shares are subject
to the aforementioned restrictions in satisfaction of the notice requirement set forth in Section 151(f) of the Delaware General Corporation
Law.

 

    A-7

     

    

 

13. Titles.
Titles are provided herein for convenience only and are not to serve as a basis for interpretation or construction of this Agreement.

 

14. Conformity
to Securities Laws. Purchaser acknowledges that the Plan is intended to conform to the extent necessary with all provisions of the
Securities Act and the Exchange Act and any and all regulations and rules promulgated by the Securities and Exchange Commission thereunder,
and state securities laws and regulations. Notwithstanding anything herein to the contrary, the Plan shall be administered, and the Shares
are to be issued, only in such a manner as to conform to such laws, rules and regulations. To the extent permitted by applicable law,
the Plan and this Agreement shall be deemed amended to the extent necessary to conform to such laws, rules and regulations. Purchaser
shall not transfer in any manner the Shares issued pursuant to this Agreement, without regard to whether such Shares are no longer subject
to the Repurchase Option, unless (i) the transfer is pursuant to an effective registration statement under the Securities Act, or the
rules and regulations in effect thereunder or (ii) counsel for the Company shall have reasonably concluded that no such registration
is required because of the availability of an exemption from registration under the Securities Act.

 

15. Lock-Up
Period. Purchaser hereby agrees that if so requested by the Company or any representative of the underwriters (the “Managing
Underwriter”) in connection with any registration of the offering of any securities of the Company under the Securities Act,
Purchaser shall not, directly or indirectly, sell or otherwise transfer any Shares or other securities of the Company during a period
of up to 180 days (the “Lock-Up Period”) following the effective date of a registration statement of the Company filed
under the Securities Act; provided, however, that such restriction shall apply only to the first registration statement
of the Company to become effective under the Securities Act that includes securities to be sold on behalf of the Company to the public
in an underwritten public offering under the Securities Act. The Company may impose stop-transfer instructions with respect to securities
subject to the foregoing restrictions until the end of such Lock-Up Period and these restrictions shall be binding on any transferee
of such Shares. Notwithstanding the foregoing, the 180-day period may be extended for up to such number of additional days as is deemed
necessary by the Company or the Managing Underwriter to continue coverage by research analysts in accordance with NASD Rule 2711 or any
successor rule.

 

16. Further
Instruments. Purchaser hereby agrees to execute such further instruments and to take such further action as may be reasonably necessary
to carry out the purposes and intent of this Agreement including, without limitation, the Investment Representation Statement, in the
form attached to the Grant Notice as Exhibit E.

 

17. Governing
Law; Severability. This Agreement shall be governed by and construed in accordance with the laws of the State of Delaware excluding
that body of law pertaining to conflicts of law. Should any provision of this Agreement be determined by a court of law to be illegal
or unenforceable, the other provisions shall nevertheless remain effective and shall remain enforceable.

 

18. Rules
Particular To Specific Countries.

 

18.1 Generally.
Purchaser shall, if required by the Administrator, enter into an election with the Company or a subsidiary (in a form approved by the
Company) under which any liability to the Company’s (or a subsidiary’s) Tax Liability, including, but not limited to, National
Insurance Contributions (“NICs”) and Fringe Benefit Tax (“FBT”), is transferred to and met by Purchaser.
For purposes of this Section 18, Tax Liability shall mean any and all liability under applicable non-U.S. laws, rules or regulations
from any income tax, the Company’s (or a subsidiary’s) NICs, FBT or similar liability and Purchaser’s NICs, FBT or
similar liability under non-U.S. laws that are attributable to: (A) the grant of, or any other benefit derived by the Purchaser from
the Shares; (B) the acquisition by Purchaser of the Shares; or (C) the disposal of any Shares acquired.

 

18.2 Tax
Indemnity. Purchaser shall indemnify and keep indemnified the Company and any of its subsidiaries from and against any Tax Liability.

 

*
* * * *

    A-8

     

    

 

Exhibit
B

 

STOCK
ASSIGNMENT

 

 

FOR
VALUE RECEIVED I, ________________, hereby sell, assign and transfer unto (__________) shares of the Common Stock of Voltus, Inc. registered
in my name on the books of said corporation [represented by Certificate No. _____ herewith] and do hereby irrevocably constitute
and appoint to transfer the said stock on the books of the within named corporation with full power of substitution in the premises.

 

This
Stock Assignment may be used only in accordance with the Restricted Stock Purchase Agreement between Voltus, Inc. and the undersigned
dated ______________, _____.

 

	Dated: _______________, ________	 
	 	Signature:_______________________________________

 

INSTRUCTIONS:
Please do not fill in any blanks other than the signature line. The purpose of this assignment is to enable the Company to exercise
the Repurchase Option, as set forth in the Restricted Stock Purchase Agreement, without requiring additional signatures on the part of
Purchaser.

 

    

     

    

 

Exhibit
C

 

JOINT
ESCROW INSTRUCTIONS

 

__
, ____

 

Secretary

Voltus,
Inc.

27
Newman Rd, Newbury, MA 01951

 

Dear
Secretary,

 

As
Escrow Agent for both Voltus, Inc. (the “Company”) and the undersigned purchaser of stock of the Company (the “Purchaser”),
you are hereby authorized and directed to hold the documents delivered to you pursuant to the terms of that certain Restricted Stock
Purchase Agreement (“Agreement”) between the Company and the undersigned, in accordance with the following instructions:

 

1. In
the event the Company or any entitled parties (referred to collectively for convenience herein as the “Company”) exercises
the Company’s Repurchase Option set forth in the Agreement, the Company shall give to Purchaser and you a written notice specifying
the number of shares of stock to be purchased, the purchase price, and the time for a closing hereunder at the principal office of the
Company. Purchaser and the Company hereby irrevocably authorize and direct you to close the transaction contemplated by such notice in
accordance with the terms of said notice.

 

2. At
the closing, you are directed (a) to date the stock assignments necessary for the transfer in question, (b) to fill in the
number of shares being transferred, and (c) to deliver the same, together with any certificate evidencing the shares of stock to
be transferred, to the Company or its assignee, against the simultaneous delivery to you of the purchase price (by cash, a check, or
a combination thereof) for the number of shares of stock being purchased pursuant to the exercise of the Company’s Repurchase Option.

 

3. Purchaser
irrevocably authorizes the Company to deposit with you any certificates evidencing shares of stock to be held by you hereunder and any
additions and substitutions to said shares as defined in the Agreement. Purchaser does hereby irrevocably constitute and appoint you
as Purchaser’s attorney-in-fact and agent for the term of this escrow to execute, with respect to such securities, all documents
necessary or appropriate to make such securities negotiable and to complete any transaction herein contemplated, including but not limited
to the filing with any applicable state blue sky authority of any required applications for consent to, or notice of transfer of, the
securities. Subject to the provisions of this paragraph 3 and to the terms of the Agreement, Purchaser shall exercise all rights
and privileges of a stockholder of the Company while the stock is held by you.

 

4. Upon
written request of Purchaser, but no more than once per calendar year, unless the Company’s Repurchase Option has been exercised,
you will deliver to Purchaser a certificate or certificates (only if the shares are in certificated form) representing the number of
shares of stock as are not then subject to the Company’s Repurchase Option or will provide Participant evidence that such shares
have been duly entered into the records of the Company. Within one hundred twenty (120) days after Purchaser ceases to be a Service Provider,
you will deliver to Purchaser a certificate or certificates representing the aggregate number of shares held or issued pursuant to the
Agreement and not purchased by the Company or any other entitled parties pursuant to exercise of the Company’s Repurchase Option
or will provide Participant evidence that such shares have been duly entered into the records of the Company.

 

    

     

    

 

5. If
at the time of termination of this escrow you should have in your possession any documents, securities, or other property belonging to
Purchaser, you shall deliver all of the same to Purchaser and shall be discharged of all further obligations hereunder.

 

6. Your
duties hereunder may be altered, amended, modified or revoked only by a writing signed by all of the parties hereto.

 

7. You
shall be obligated only for the performance of such duties as are specifically set forth herein and may rely and shall be protected in
relying or refraining from acting on any instrument reasonably believed by you to be genuine and to have been signed or presented by
the proper party or parties. You shall not be personally liable for any act you may do or omit to do hereunder as Escrow Agent or as
attorney-in-fact for Purchaser while acting in good faith, and any act done or omitted by you pursuant to the advice of your own attorneys
shall be conclusive evidence of such good faith.

 

8. You
are hereby expressly authorized to disregard any and all warnings given by any of the parties hereto or by any other person or corporation,
excepting only orders or process of courts of law and are hereby expressly authorized to comply with and obey orders, judgments or decrees
of any court. In case you obey or comply with any such order, judgment or decree, you shall not be liable to any of the parties hereto
or to any other person, firm or corporation by reason of such compliance, notwithstanding any such order, judgment or decree being subsequently
reversed, modified, annulled, set aside, vacated or found to have been entered without jurisdiction.

 

9. You
shall not be liable in any respect on account of the identity, authorities or rights of the parties executing or delivering or purporting
to execute or deliver the Agreement or any documents or papers deposited or called for hereunder.

 

10. You
shall not be liable for the expiration of any rights under any applicable state, federal or local statute of limitations or similar statute
or regulation with respect to these Joint Escrow Instructions or any documents deposited with you.

 

11. You
shall be entitled to employ such legal counsel and other experts as you may deem necessary properly to advise you in connection with
your obligations hereunder, may rely upon the advice of such counsel, and may pay such counsel reasonable compensation therefor.

 

    C-2

     

    

 

12. Your
responsibilities as Escrow Agent hereunder shall terminate if you shall cease to be an officer or agent of the Company or if you shall
resign by written notice to each party. In the event of any such termination, the Company shall appoint a successor Escrow Agent.

 

13. If
you reasonably require other or further instruments in connection with these Joint Escrow Instructions or obligations in respect hereto,
the necessary parties hereto shall join in furnishing such instruments.

 

14. It
is understood and agreed that should any dispute arise with respect to the delivery and/or ownership or right of possession of the securities
held by you hereunder, you are authorized and directed to retain in your possession without liability to anyone all or any part of said
securities until such disputes shall have been settled either by mutual written agreement of the parties concerned or by a final order,
decree or judgment of a court of competent jurisdiction after the time for appeal has expired and no appeal has been perfected, but you
shall be under no duty whatsoever to institute or defend any such proceedings.

 

15. Any
notice required or permitted hereunder shall be given in writing and shall be deemed effectively given upon personal delivery or upon
deposit in the United States Post Office, by registered or certified mail with postage and fees prepaid, addressed to each of the other
parties thereunto entitled at such addresses as a party may designate by written notice to each of the other parties hereto.

 

16. By
signing these Joint Escrow Instructions, you become a party hereto only for the purpose of said Joint Escrow Instructions; you do not
become a party to the Agreement.

 

17. This
instrument shall be binding upon and inure to the benefit of the parties hereto, and their respective successors and permitted assigns.

 

18. These
Joint Escrow Instructions shall be governed by, and construed and enforced in accordance with, the laws of the State of Delaware, excluding
that body of law pertaining to conflicts of law.

 

(Signature
Page Follows)

 

    C-3

     

    

 

IN
WITNESS WHEREOF, these Joint Escrow Instructions shall be effective as of the date first set forth above.

 

	 	Voltus, Inc. 
	 	 
	 	By:	  
	 	 	 
	 	 	Name:
	 	 	Title:

 

	 	PURCHASER
	 	 
	 	By:	                 
	 	 	Name:	 
	 	 	Address:	 

 

	 	ESCROW AGENT
	 	 
	 	By:	             
	 	Name:	 
	 	Title:	 

 

    C-4

     

    

 

Exhibit
D

 

CONSENT
OF SPOUSE OR DOMESTIC PARTNER

 

I,
____________________, spouse or registered domestic partner of ____________________, have read and approve the Restricted Stock Purchase
Agreement dated ___________, _____, between my spouse or registered domestic partner and Voltus, Inc. In consideration of granting of
the right to my spouse or registered domestic partner to purchase shares of common stock of Voltus, Inc. set forth in the Restricted
Stock Purchase Agreement, I hereby appoint my spouse or registered domestic partner as my attorney-in-fact in respect to the exercise
of any rights under the Agreement and agree to be bound by the provisions of the Restricted Stock Purchase Agreement insofar as I may
have any rights in said Restricted Stock Purchase Agreement or any shares issued pursuant thereto under the community property laws or
similar laws relating to marital property in effect in the state of our residence as of the date of the signing of the foregoing Restricted
Stock Purchase Agreement.

 

	Dated: _______________, ______	 
	 	 __________________________________________
	 	Signature of Spouse or Registered Domestic Partner

 

    

     

    

 

Exhibit
E

 

INVESTMENT
REPRESENTATION STATEMENT

 

	PURCHASER:	 
	COMPANY:	Voltus, Inc.
	SECURITY:	Common Stock
	AMOUNT:	 
	DATE:	 

 

In
connection with the purchase of the above-listed shares of Common Stock (the “Securities”) of Voltus, Inc., a Delaware
corporation (the “Company”), the undersigned (“Purchaser”) represents to the Company the following:

 

1. Purchaser
is aware of the Company’s business affairs and financial condition and has acquired sufficient information about the Company to
reach an informed and knowledgeable decision to acquire the Securities. Purchaser is acquiring these Securities for investment for Purchaser’s
own account only and not with a view to, or for resale in connection with, any “distribution” thereof within the meaning
of the Securities Act of 1933, as amended (the “Securities Act”).

 

2. Purchaser
acknowledges and understands that the Securities constitute “restricted securities” under the Securities Act and have not
been registered under the Securities Act in reliance upon a specific exemption therefrom, which exemption depends upon, among other things,
the bona fide nature of Purchaser’s investment intent as expressed herein. Purchaser understands that, in the view of the Securities
and Exchange Commission, the statutory basis for such exemption may be unavailable if Purchaser’s representation was predicated
solely upon a present intention to hold these Securities for the minimum capital gains period specified under tax statutes, for a deferred
sale, for or until an increase or decrease in the market price of the Securities, or for a period of one year or any other fixed period
in the future. Purchaser further understands that the Securities must be held indefinitely unless they are subsequently registered under
the Securities Act or an exemption from such registration is available. Purchaser further acknowledges and understands that the Company
is under no obligation to register the Securities. Purchaser understands that any certificate evidencing the Securities will be imprinted
with a legend which prohibits the transfer of the Securities unless they are registered or such registration is not required in the opinion
of counsel satisfactory to the Company and any other legend required under applicable state securities laws or agreements.

 

3. Purchaser
is familiar with the provisions of Rule 701 and Rule 144, each promulgated under the Securities Act, which, in substance, permit
limited public resale of “restricted securities” acquired, directly or indirectly from the issuer thereof, in a non-public
offering subject to the satisfaction of certain conditions. Rule 701 provides that if the issuer qualifies under Rule 701 at
the time of the grant of the Stock Purchase Right to Purchaser, the exercise will be exempt from registration under the Securities Act.
In the event the Company becomes subject to the reporting requirements of Section 13 or 15(d) of the Securities Exchange Act of
1934, as amended (the “Exchange Act”), ninety (90) days thereafter (or such longer period as any market stand-off
agreement may require) the Securities exempt under Rule 701 may under present law be resold, subject to the satisfaction of certain
of the conditions specified by Rule 144, including: (1) the resale being made through a broker in an unsolicited “broker’s
transaction” or in transactions directly with a market maker (as said term is defined under the Exchange Act); and, in the
case of an affiliate, (2) the availability of certain public information about the Company, (3) the amount of Securities being sold
during any three (3) month period not exceeding the limitations specified in Rule 144(e), and (4) the timely filing of a Form 144,
if applicable.

 

    

     

    

 

In
the event that the Company does not qualify under Rule 701 at the time of grant of the Stock Purchase Right, then the Securities
may be resold in certain limited circumstances subject to the provisions of Rule 144, which requires the resale to occur not
less than six months, or, in the event the Company is not subject to the reporting requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, not less than one year, after the later of the date the Securities were sold by the Company or the date the Securities
were sold by an affiliate of the Company, within the meaning of Rule 144; and, in the case of acquisition of the Securities by an
affiliate, the satisfaction of the conditions set forth in sections (1), (2), (3) and (4) of the paragraph immediately above or, in the
case of a non-affiliate who subsequently holds the Securities less than one year, the satisfaction of the conditions set forth in section
(2) of the paragraph immediately above..

 

4. Purchaser
further understands that in the event all of the applicable requirements of Rule 701 or 144 are not satisfied, registration under
the Securities Act, compliance with Regulation A, or some other registration exemption will be required; and that, notwithstanding the
fact that Rules 144 and 701 are not exclusive, the Staff of the Securities and Exchange Commission has expressed its opinion that persons
proposing to sell private placement securities other than in a registered offering and otherwise than pursuant to Rules 144 or 701 will
have a substantial burden of proof in establishing that an exemption from registration is available for such offers or sales, and that
such persons and their respective brokers who participate in such transactions do so at their own risk. Purchaser understands that no
assurances can be given that any such other registration exemption will be available in such event.

 

		Signature
    of Purchaser: 
	 	 
		[Purchaser] 
	 	 
	Date: _______________________,
    ____	 

 

    E-2

     

    

 

FORM
OF 83(B) ELECTION AND INSTRUCTIONS

 

These
instructions are provided to assist you if you choose to make an election under Section 83(b) of the Internal Revenue Code, as amended,
with respect to the shares of common stock of Voltus, Inc. transferred to you. Please consult with your personal tax advisor as to
whether an election of this nature will be in your best interests in light of your personal tax situation.

 

The
executed original of the Section 83(b) election must be filed with the Internal Revenue Service not later than 30 days after the date
the shares were transferred to you. PLEASE NOTE: There is no remedy for failure to file on time. The steps outlined below should be followed
to ensure the election is mailed and filed correctly and in a timely manner. ALSO, PLEASE NOTE: If you make the Section 83(b) election,
the election is irrevocable.

 

Complete
Section 83(b) election form (attached as Attachment 1) and make three (3) copies of the signed election form. (If you live in
a community property state, your spouse or registered domestic partner should sign the Section 83(b) election form as well.)

 

Prepare
the cover letter to the Internal Revenue Service (sample letter attached as Attachment 2).

 

Send
the cover letter with the originally executed Section 83(b) election form and one (1) copy via certified mail, return receipt requested
to the Internal Revenue Service at the address of the Internal Revenue Service where you file your personal tax returns. We suggest that
you have the package date-stamped at the post office. The post office will provide you with a certified receipt that includes a dated
postmark. Enclose a self-addressed, stamped envelope so that the Internal Revenue Service may return a date-stamped copy to you. However,
your postmarked receipt is your proof of having timely filed the Section 83(b) election if you do not receive confirmation from the Internal
Revenue Service.

 

One
(1) copy must be sent to Voltus, Inc. for its records. Note that you do not need to attach a copy of your election with your federal
income tax return for the applicable calendar year.

 

Retain
the Internal Revenue Service file stamped copy (when returned) for your records.

 

Please
consult your personal tax advisor for the address of the office of the Internal Revenue Service to which you should mail your election
form.

 

    

     

    

 

ATTACHMENT
1

 

ELECTION
UNDER INTERNAL REVENUE CODE SECTION 83(B)

 

The
undersigned taxpayer hereby elects, pursuant to Section 83(b) of the Internal Revenue Code of 1986, as amended, to include in taxpayer’s
gross income for the current taxable year the amount of any compensation taxable to taxpayer in connection with taxpayer’s receipt
of shares (the “Shares”) of Common Stock of Voltus, Inc., a Delaware corporation (the “Company”).

 

The
name, address and taxpayer identification number of the undersigned taxpayer are:

 

	 	___________________________	 
	 	___________________________	 
	 	___________________________	 
	 	 	 
	 	SSN:	 

 

The
name, address and taxpayer identification number of the Taxpayer’s spouse/registered domestic partner are (complete if applicable):

 

	 	___________________________	 
	 	___________________________	 
	 	___________________________	 
	 	 	 
	 	SSN:	 

 

Description
of the property with respect to which the election is being made:

 

__________________
(_____) Shares of the Company.

 

The
date on which the property was transferred was ______________. The taxable year to which this election relates is calendar year ____.

 

Nature
of restrictions to which the property is subject:

 

The
Shares are subject to repurchase by the Company or its assignee upon the occurrence of certain events. This repurchase right lapses based
upon the continued performance of services by the taxpayer over time.

 

The
fair market value at the time of transfer (determined without regard to any lapse restrictions, as defined in Treasury Regulation Section
1.83-3(i)) of the Shares was $___________ per Share x _________ Shares = $_____.

 

The
amount paid by the taxpayer for Shares was $ per Share x ________ Shares = $_____.

 

The
amount to include in gross income is $_______.

 

The
undersigned taxpayer will file this election with the Internal Revenue Service office with which taxpayer files his or her annual income
tax return not later than 30 days after the date of transfer of the property. A copy of this statement has been furnished to the Company.
The undersigned is the person performing the services in connection with which the property was transferred.

 

The
undersigned understands that the foregoing election may not be revoked except with the consent of the Commissioner.

 

	Dated: _____________, ____	Taxpayer Signature: ________________________
	 	 

 

 

The
undersigned spouse or registered domestic partner of Taxpayer joins in this election. (Complete if applicable).

 

	Dated: ______________, ____	Spouse’s or Domestic Partner’s
    Signature:
	 	_________________________________

Signature(s)
Notarized by:

 

___________________________

___________________________

  

    

     

    

 

ATTACHMENT
2

 

SAMPLE
COVER LETTER TO INTERNAL REVENUE SERVICE

 

__________________,
____

 

VIA
CERTIFIED MAIL

RETURN RECEIPT REQUESTED

 

Internal
Revenue Service

[Address where taxpayer files returns]

 

	Re:	Election under
    Section 83(b) of the Internal Revenue Code of 1986
		Taxpayer: ______________________________________________________________________
		Taxpayer’s Social
    Security Number:  ___________________________________________________
		Taxpayer’s Spouse/Domestic
    Partner:  ___________________________________________________
		Taxpayer’s Spouse’s/Domestic
    Partner’s Social Security Number:________________________________

 

Ladies
and Gentlemen:

 

Enclosed
please find an original and one copy of an Election under Section 83(b) of the Internal Revenue Code of 1986, as amended, being made
by the taxpayer referenced above. Please acknowledge receipt of the enclosed materials by stamping the enclosed copy of the Election
and returning it to me in the self-addressed stamped envelope provided herewith.

 

		Very truly
    yours, 
	 	 _____________________________________
	Enclosures	 
	cc: Voltus, Inc.

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