Document:

Exhibit 4.2

 

[Form
of Warrant Certificate]

 

[FACE]

 

Number

 

Warrants

 

____________________

 

THIS
WARRANT SHALL BE NULL AND VOID IF NOT EXERCISED PRIOR TO

THE EXPIRATION OF THE EXERCISE PERIOD PROVIDED FOR

IN THE WARRANT AGREEMENT DESCRIBED BELOW

 

HYLIION
HOLDINGS CORP.

Incorporated
Under the Laws of the State of Delaware

 

CUSIP
449109 115

 

Warrant
Certificate

 

This
Warrant Certificate certifies that           , or registered assigns,
is the registered holder of            warrant(s) evidenced hereby
(the “Warrants” and each, a “Warrant”) to purchase shares of common stock,
$0.0001 par value per share (“Common Stock”), of Hyliion Holdings Corp., a Delaware corporation (the
“Company”). Each Warrant entitles the holder, upon exercise during the period set forth in the Warrant
Agreement referred to below, to receive from the Company that number of fully paid and non-assessable shares of Common Stock as
set forth below, at the exercise price (the “Exercise Price”) as determined pursuant to the Warrant
Agreement, payable by certified or official bank check payable to the Company (or through “cashless exercise”
as provided for in the Warrant Agreement) upon surrender of this Warrant Certificate and payment of the Exercise Price at the
office or agency of the Warrant Agent referred to below, subject to the conditions set forth herein and in the Warrant Agreement.
Defined terms used in this Warrant Certificate but not defined herein shall have the meanings given to them in the Warrant Agreement.

 

Each
Warrant is initially exercisable for one fully paid and non-assessable share of Common Stock. The number of shares of Common Stock
issuable upon exercise of the Warrants is subject to adjustment upon the occurrence of certain events as set forth in the Warrant
Agreement.

 

The
initial Exercise Price is equal to $11.50 per share. The Exercise Price is subject to adjustment upon the occurrence of certain
events as set forth in the Warrant Agreement.

 

Subject
to the conditions set forth in the Warrant Agreement, the Warrants may be exercised only during the Exercise Period and to the
extent not exercised by the end of such Exercise Period, such Warrants shall become void.

 

Reference
is hereby made to the further provisions of this Warrant Certificate set forth on the reverse hereof and such further provisions
shall for all purposes have the same effect as though fully set forth at this place.

 

This
Warrant Certificate shall not be valid unless countersigned by the Warrant Agent, as such term is used in the Warrant Agreement.

 

This
Warrant Certificate shall be governed by and construed in accordance with the internal laws of the State of New York, without
regard to conflicts of laws principles thereof.

 

    

     

    

 

	 	HYLIION
    HOLDINGS CORP.
	 	 
	 	By:	 
	 	Name: 	                        
	 	Title:	 
	 	 
	 	CONTINENTAL
    STOCK TRANSFER 

    & TRUST COMPANY as Warrant Agent
	 	 
	 	By:	 
	 	Name: 	 
	 	Title:	 

 

    2

     

    

 

[Form
of Warrant Certificate]

 

[Reverse]

 

The
Warrants evidenced by this Warrant Certificate are part of a duly authorized issue of Warrants entitling the holder on exercise
to receive shares of Common Stock and are issued or to be issued pursuant to a Warrant Agreement dated as of           ,
2019 (the “Warrant Agreement”), duly executed and delivered by the Company to Continental Stock Transfer
& Trust Company, a New York corporation, as warrant agent (the “Warrant Agent”), which Warrant Agreement
is hereby incorporated by reference in and made a part of this instrument and is hereby referred to for a description of the rights,
limitation of rights, obligations, duties and immunities thereunder of the Warrant Agent, the Company and the holders (the words
“holders” or “holder” meaning the Registered Holders or Registered Holder,
respectively) of the Warrants. A copy of the Warrant Agreement may be obtained by the holder hereof upon written request to the
Company. Defined terms used in this Warrant Certificate but not defined herein shall have the meanings given to them in the Warrant
Agreement.

 

Warrants
may be exercised at any time during the Exercise Period set forth in the Warrant Agreement. The holder of Warrants evidenced by
this Warrant Certificate may exercise them by surrendering this Warrant Certificate, with the form of election to purchase set
forth hereon properly completed and executed, together with payment of the Exercise Price as specified in the Warrant Agreement
(or through “cashless exercise” as provided for in the Warrant Agreement) at the principal corporate
trust office of the Warrant Agent. In the event that upon any exercise of Warrants evidenced hereby the number of Warrants exercised
shall be less than the total number of Warrants evidenced hereby, there shall be issued to the holder hereof or his, her or its
assignee, a new Warrant Certificate evidencing the number of Warrants not exercised.

 

Notwithstanding
anything else in this Warrant Certificate or the Warrant Agreement, no Warrant may be exercised unless at the time of exercise
(i) a registration statement covering the shares of Common Stock to be issued upon exercise is effective under the Securities
Act and (ii) a prospectus thereunder relating to the shares of Common Stock is current, except through “cashless exercise”
as provided for in the Warrant Agreement.

 

The
Warrant Agreement provides that upon the occurrence of certain events the number of shares of Common Stock issuable upon exercise
of the Warrants set forth on the face hereof may, subject to certain conditions, be adjusted. If, upon exercise of a Warrant,
the holder thereof would be entitled to receive a fractional interest in a share of Common Stock, the Company shall, upon exercise,
round down to the nearest whole number of shares of Common Stock to be issued to the holder of the Warrant.

 

Warrant
Certificates, when surrendered at the principal corporate trust office of the Warrant Agent by the Registered Holder thereof in
person or by legal representative or attorney duly authorized in writing, may be exchanged, in the manner and subject to the limitations
provided in the Warrant Agreement, but without payment of any service charge, for another Warrant Certificate or Warrant Certificates
of like tenor evidencing in the aggregate a like number of Warrants.

 

Upon
due presentation for registration of transfer of this Warrant Certificate at the office of the Warrant Agent a new Warrant Certificate
or Warrant Certificates of like tenor and evidencing in the aggregate a like number of Warrants shall be issued to the transferee(s)
in exchange for this Warrant Certificate, subject to the limitations provided in the Warrant Agreement, without charge except
for any tax or other governmental charge imposed in connection therewith.

 

The
Company and the Warrant Agent may deem and treat the Registered Holder(s) hereof as the absolute owner(s) of this Warrant Certificate
(notwithstanding any notation of ownership or other writing hereon made by anyone), for the purpose of any exercise hereof, of
any distribution to the holder(s) hereof, and for all other purposes, and neither the Company nor the Warrant Agent shall be affected
by any notice to the contrary. Neither the Warrants nor this Warrant Certificate entitles any holder hereof to any rights of a
stockholder of the Company.

 

    3

     

    

 

Election
to Purchase

 

(To
Be Executed Upon Exercise of Warrant)

 

The
undersigned hereby irrevocably elects to exercise the right, represented by this Warrant Certificate, to receive            shares
of Common Stock and herewith tenders payment for such shares of Common Stock to the order of Hyliion Holdings Corp. (the “Company”)
in the amount of $           in accordance with the terms hereof. The undersigned
requests that a certificate for such shares of Common Stock be registered in the name of           ,
whose address is            and that such shares of Common Stock be
delivered to            whose address is           .
If said number of shares of Common Stock is less than all of the shares of Common Stock purchasable hereunder, the undersigned
requests that a new Warrant Certificate representing the remaining balance of such shares of Common Stock be registered in the
name of           , whose address is            and
that such Warrant Certificate be delivered to           , whose address
is           .

 

In
the event that the Warrant has been called for redemption by the Company pursuant to Section 6 of the Warrant
Agreement and the Company has required cashless exercise pursuant to Section 6.3 of the Warrant Agreement, the
number of shares of Common Stock that this Warrant is exercisable for shall be determined in accordance with subsection
3.3.1(b) and Section 6.3 of the Warrant Agreement.

 

In
the event that the Warrant is a Private Placement Warrant that is to be exercised on a “cashless” basis
pursuant to subsection 3.3.1(c) of the Warrant Agreement, the number of shares of Common Stock that this Warrant
is exercisable for shall be determined in accordance with subsection 3.3.1(c) of the Warrant Agreement.

 

In
the event that the Warrant is to be exercised on a “cashless” basis pursuant to Section 7.4 of
the Warrant Agreement, the number of shares of Common Stock that this Warrant is exercisable for shall be determined in accordance
with Section 7.4 of the Warrant Agreement.

 

In
the event that the Warrant (as such term is defined in the Warrant Agreement) may be exercised, to the extent allowed by the Warrant
Agreement, through cashless exercise (i) the number of shares of Common Stock that this Warrant is exercisable for would be determined
in accordance with the relevant section of the Warrant Agreement which allows for such cashless exercise and (ii) the holder hereof
shall complete the following: The undersigned hereby irrevocably elects to exercise the right, represented by this Warrant Certificate,
through the cashless exercise provisions of the Warrant Agreement, to receive shares of Common Stock. If said number of shares
of Common Stock is less than all of the shares of Common Stock purchasable hereunder (after giving effect to the cashless exercise),
the undersigned requests that a new Warrant Certificate representing the remaining balance of such shares of Common Stock be registered
in the name of           , whose address is            and
that such Warrant Certificate be delivered to           , whose address
is           .

 

[signature
page follows]

 

    4

     

    

 

Date:

 

	 	 
	 	(Signature)
	 	 
	 	 
	 	 
	 	 
	 	(Address)
	 	 
	 	 
	 	(Tax
    Identification Number)

 

Signature
Guaranteed:

 

	 	 

	THE
SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND
CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM, PURSUANT TO SEC RULE 17Ad-15 (OR ANY SUCCESSOR
RULE)) UNDER THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED.	 

 

 

5Exhibit 4.4

 

AMENDED AND RESTATED REGISTRATION RIGHTS
AGREEMENT

 

THIS AMENDED AND RESTATED
REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of October 1, 2020, is made and entered into
by and among Hyliion Holdings Corp., a Delaware corporation f/k/a Tortoise Acquisition Corp. (the “Company”),
Tortoise Sponsor LLC, a Delaware limited liability company (the “Sponsor”), TortoiseEcofin Borrower LLC,
a Delaware limited liability company (“Tortoise Borrower”), and the undersigned parties listed under
Holder on the signature pages hereto (each such party, together with the Sponsor, Tortoise Borrower and any person or entity who
hereafter becomes a party to this Agreement pursuant to Section 5.2 of this Agreement, a “Holder”
and collectively the “Holders”).

 

RECITALS

 

WHEREAS, on
February 27, 2019, the Company, the Sponsor, Atlas Point Energy Infrastructure Fund, LLC, a Delaware limited liability company
(“Atlas Point”), Tortoise Borrower and certain other security holders named therein entered into that
certain Registration Rights Agreement (the “Existing Registration Rights Agreement”), pursuant to which
the Company granted the Sponsor, Atlas Point, Tortoise Borrower and such other holders named therein certain registration rights
with respect to certain securities of the Company;

 

WHEREAS, on
June 18, 2020, the Company, SHLL Merger Sub Inc., a Delaware corporation and wholly owned subsidiary of the Company (“Merger
Sub”), and Hyliion Inc., a Delaware corporation (“Hyliion”), entered into that certain
Business Combination Agreement and Plan of Reorganization, pursuant to which Merger Sub will merge with and into Hyliion on or
about the date hereof, with Hyliion surviving the merger as a wholly owned subsidiary of the Company (the “Business
Combination”);

 

WHEREAS, after
the closing of the Business Combination, the Holders will own shares of the Company’s Class A common stock, par value $0.0001
per share (the “Common Stock”), and Tortoise Borrower will own warrants to purchase 6,660,183 shares
of Common Stock (the “Private Placement Warrants”); and

 

WHEREAS, the
Company and the Holders desire to amend and restate the Existing Registration Rights Agreement, pursuant to which the Company shall
grant the Holders certain registration rights with respect to certain securities of the Company, as set forth in this Agreement.

 

NOW, THEREFORE,
in consideration of the representations, covenants and agreements contained herein, and certain other good and valuable consideration,
the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound, hereby agree as
follows:

 

Article 1

DEFINITIONS

 

1.1 Definitions.
The terms defined in this Article 1 shall, for all purposes
of this Agreement, have the respective meanings set forth below:

 

“Adverse
Disclosure” shall mean any public disclosure of material non-public information, which disclosure, in the good faith
judgment of the Chief Executive Officer or principal financial officer of the Company, after consultation with counsel to the Company,
(i) would be required to be made in any Registration Statement or Prospectus in order for the applicable Registration Statement
or Prospectus not to contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements
contained therein (in the case of any prospectus and any preliminary prospectus, in the light of the circumstances under which
they were made) not misleading, (ii) would not be required to be made at such time if the Registration Statement were not
being filed and (iii) the Company has a bona fide business purpose for not making such information public.

 

    

     

    

 

“Agreement”
shall have the meaning given in the Preamble.

 

“Atlas
Point” shall have the meaning given in the Recitals hereto.

 

“Board”
shall mean the board of directors of the Company.

 

“Business Combination”
shall have the meaning given in the Recitals hereto.

 

“Commission”
shall mean the Securities and Exchange Commission.

 

“Common
Stock” shall have the meaning given in the Recitals hereto.

 

“Company”
shall have the meaning given in the Preamble.

 

“Demanding
Holder” shall mean, any Initial Holder or group of Initial Holders, that together elects to dispose of Registrable
Securities having an aggregate value of at least $25 million, at the time of the Underwritten Demand, under a Registration Statement
pursuant to an Underwritten Offering.

 

“Effectiveness
Period” shall have the meaning given in subsection 3.1.1.

 

“Exchange
Act” shall mean the Securities Exchange Act of 1934, as it may be amended from time to time.

 

“Existing
Registration Rights Agreement” shall have the meaning given in the Recitals hereto.

 

“Form S-3”
shall mean Form S-3 or any similar short-form registration statement that may be available at such time.

 

“Holder
Indemnified Persons” shall have the meaning given in subsection 4.1.1.

 

“Holders”
shall have the meaning given in the Preamble.

 

“Hyliion”
shall have the meaning given in the Recitals hereto.

 

“Initial
Holders” shall mean the Sponsor, Tortoise Borrower, Andrew J. Orekar, Frank M. Semple, Sidney L. Tassin, Vincent
T. Cubbage, Stephen Pang, Steven C. Schnitzer, Darrell Brock, Evan Zimmer and Ed Russell.

 

    2

     

    

 

“Maximum
Number of Securities” shall have the meaning given in subsection 2.1.4.

 

“Merger Sub”
shall have the meaning given in the Recitals hereto.

 

“Misstatement”
shall mean an untrue statement of a material fact or an omission to state a material fact required to be stated in a Registration
Statement or Prospectus, or necessary to make the statements in a Registration Statement or Prospectus in the light of the circumstances
under which they were made not misleading.

 

“Piggyback
Registration” shall have the meaning given in subsection 2.2.1.

 

“Private
Placement Warrants” shall have the meaning given in the Recitals hereto.

 

“Prospectus”
shall mean the prospectus included in any Registration Statement, as supplemented by any and all prospectus supplements and as
amended by any and all post-effective amendments and including all material incorporated by reference in such prospectus.

 

“Registrable
Security” shall mean (a) the Private Placement Warrants (including any shares of Common Stock issued or issuable
upon the exercise of any such Private Placement Warrants), (b) any outstanding share of Common Stock or any other equity security
(including the shares of Common Stock issued or issuable upon the exercise of any other equity security) of the Company held by
a Holder as of the date of this Agreement, which, for the avoidance of doubt, shall include shares of Common Stock received by
a Holder on or after the date hereof as a distribution from the Sponsor in connection with its liquidation and dissolution, (c) any
equity securities (including the shares of Common Stock issued or issuable upon the exercise of any such equity security) of the
Company issuable upon conversion of any working capital loans in an amount up to $1,500,000 made to the Company by a Holder and
(d) any other equity security of the Company issued or issuable with respect to any such share of Common Stock by way of a
stock dividend or stock split or in connection with a combination of shares, recapitalization, merger, consolidation or reorganization;
provided, however, that, as to any particular Registrable Securities, such securities shall cease to be Registrable Securities
when: (A) a Registration Statement with respect to the sale of such securities shall have become effective under the Securities
Act and such securities shall have been sold, transferred, disposed of or exchanged in accordance with such Registration Statement;
(B) such securities shall have been otherwise transferred, new certificates for such securities not bearing a legend restricting
further transfer shall have been delivered by the Company and subsequent public distribution of such securities shall not require
registration under the Securities Act; (C) such securities shall have ceased to be outstanding; or (D) such securities may be sold
without registration pursuant to Rule 144 promulgated under the Securities Act (or any successor rule promulgated thereafter
by the Commission) (but with no volume or other restrictions or limitations).

 

“Registration”
shall mean a registration effected by preparing and filing a registration statement or similar document in compliance with
the requirements of the Securities Act, and the applicable rules and regulations promulgated thereunder, and any such
registration statement having become effective by the Commission.

 

    3

     

    

 

“Registration
Expenses” shall mean the out-of-pocket expenses of a Registration, including, without limitation, the following:

 

(a) all
registration and filing fees (including fees with respect to filings required to be made with the Financial Industry Regulatory
Authority) and any securities exchange on which the Common Stock is then listed;

 

(b) fees
and expenses of compliance with securities or blue sky laws (including reasonable fees and disbursements of counsel for the Underwriters
in connection with blue sky qualifications of Registrable Securities);

 

(c) printing,
messenger, telephone and delivery expenses;

 

(d) reasonable
fees and disbursements of counsel for the Company;

 

(e) reasonable
fees and disbursements of all independent registered public accountants of the Company incurred specifically in connection with
such Registration; and

 

(f) reasonable
fees and expenses of one (1) legal counsel selected by the Demanding Holders initiating a Underwritten Demand to be registered
for offer and sale in the applicable Registration or Underwritten Offering.

 

“Registration
Statement” shall mean any registration statement under the Securities Act that covers the Registrable Securities
pursuant to the provisions of this Agreement, including the Prospectus included in such registration statement, amendments (including
post-effective amendments) and supplements to such registration statement and all exhibits to and all material incorporated by
reference in such registration statement.

 

“Requesting
Holder” shall have the meaning given in subsection 2.1.3.

 

“Securities
Act” shall mean the Securities Act of 1933, as amended from time to time.

 

“Shelf Registration”
shall have the meaning given in subsection 2.1.1.

 

“Sponsor”
shall have the meaning given in the Preamble.

 

“Tortoise
Borrower” shall have the meaning given in the Preamble.

 

“Underwriter”
shall mean a securities dealer who purchases any Registrable Securities as principal in an Underwritten Offering and not as part
of such dealer’s market-making activities.

 

“Underwritten
Demand” shall have the meaning given in subsection 2.1.3.

 

“Underwritten
Offering” shall mean a Registration in which securities of the Company are sold to an Underwriter in a firm commitment
underwriting for distribution to the public.

 

    4

     

    

 

 

Article 2

REGISTRATIONS

 

2.1 Registration.

 

2.1.1 Shelf
Registration. The Company agrees that, within thirty (30) calendar days after the consummation of the Business Combination,
the Company will file with the Commission (at the Company’s sole cost and expense) a Registration Statement registering the
resale of the Registrable Securities (a “Shelf Registration”). The Company shall use its reasonable best
efforts to cause such Registration Statement to become effective by the Commission as soon as reasonably practicable after the
initial filing of the Registration Statement in accordance with Section 3.1 of this Agreement.

 

2.1.2 Effective
Registration. Notwithstanding the provisions of subsection 2.1.1 above or any other part of this Agreement, a Registration
pursuant to a Shelf Registration shall not count as a Registration unless and until (i) the Registration Statement filed with
the Commission with respect to a Registration pursuant to a Shelf Registration has become effective by the Commission and (ii) the
Company has complied with all of its obligations under this Agreement with respect thereto. Subject to the limitations contained
in this Agreement, the Company shall effect any Shelf Registration on such appropriate registration form of the Commission (x) as
shall be selected by the Company and (y) as shall permit the resale of the Registrable Securities by the Holders. If at any
time a Registration Statement on Form S-3 filed with the Commission pursuant to Section 2.1.1 is effective and a Holder
provides written notice to the Company that it intends to effect an offering of all or part of the Registrable Securities included
on such Registration Statement, the Company will amend or supplement such Registration Statement as may be necessary in order to
enable such offering to take place in accordance with the terms of this Agreement.

 

2.1.3 Underwritten
Offering. Subject to the provisions of subsection 2.1.4 and Section 2.3 hereof, any Demanding
Holder may make a written demand for an Underwritten Offering pursuant to a Registration Statement filed with the Commission
in accordance with Section 2.1.1 (an “Underwritten Demand”). The Company shall, within ten
(10) days of the Company’s receipt of the Underwritten Demand, notify, in writing, all other Holders of such demand,
and each Holder who thereafter wishes to include all or a portion of such Holder’s Registrable Securities in such
Underwritten Offering pursuant to an Underwritten Demand (each such Holder that includes all or a portion of such
Holder’s Registrable Securities in such Underwritten Offering, a “Requesting Holder”) shall
so notify the Company, in writing, within two (2) days (one (1) day if such offering is an overnight or bought
Underwritten Offering) after the receipt by the Holder of the notice from the Company. Upon receipt by the Company of any
such written notification from a Requesting Holder(s), such Requesting Holder(s) shall be entitled to have their Registrable
Securities included in the Underwritten Offering pursuant to an Underwritten Demand. All such Holders proposing to distribute
their Registrable Securities through an Underwritten Offering under this subsection 2.1.3 shall enter into an
underwriting agreement in customary form with the Underwriter(s) selected for such Underwritten Offering by the Demanding
Holders initiating the Underwritten Offering. Notwithstanding the foregoing, the Company is not obligated to effect more than
an aggregate of three (3) Underwritten Offerings pursuant to this subsection 2.1.3 and is not obligated to
effect an Underwritten Offering pursuant to this subsection 2.1.3 within ninety (90) days after the closing of an
Underwritten Offering.

 

    5

     

    

 

2.1.4 Reduction
of Underwritten Offering. If the managing Underwriter or Underwriters in an Underwritten Offering pursuant to a Underwritten
Demand, in good faith, advises the Company, the Demanding Holders, the Requesting Holders and other persons or entities holding
Common Stock or other equity securities of the Company that the Company is obligated to include pursuant to separate written contractual
arrangements with such persons or entities (if any) in writing that the dollar amount or number of Registrable Securities or other
equity securities of the Company requested to be included in such Underwritten Offering exceeds the maximum dollar amount or maximum
number of equity securities of the Company that can be sold in the Underwritten Offering without adversely affecting the proposed
offering price, the timing, the distribution method or the probability of success of such offering (such maximum dollar amount
or maximum number of such securities, as applicable, the “Maximum Number of Securities”), then the Company
shall include in such Underwritten Offering, as follows: (i) first, the Registrable Securities of the Demanding Holders and
the Requesting Holders (if any) (pro rata based on the respective number of Registrable Securities that each Demanding Holder and
Requesting Holder (if any) has requested be included in such Underwritten Offering and the aggregate number of Registrable Securities
that the Demanding Holders and Requesting Holders have requested be included in such Underwritten Offering (such proportion is
referred to herein as “Pro Rata”)) that can be sold without exceeding the Maximum Number of Securities;
(ii) second, to the extent that the Maximum Number of Securities has not been reached under the foregoing clause (i),
Common Stock or other equity securities of the Company that the Company desires to sell and that can be sold without exceeding
the Maximum Number of Securities; and (iii) third, to the extent that the Maximum Number of Securities has not been reached
under the foregoing clauses (i) and (ii), Common Stock or other equity securities of the Company held by
other persons or entities that the Company is obligated to include pursuant to separate written contractual arrangements with such
persons or entities and that can be sold without exceeding the Maximum Number of Securities.

 

2.2 Piggyback
Registration.

 

2.2.1 Piggyback
Rights. If the Company proposes to (i) file a Registration Statement under the Securities Act with respect to an
offering of equity securities of the Company, or securities or other obligations exercisable or exchangeable for, or
convertible into equity securities of the Company, for its own account or for the account of stockholders of the Company,
other than a Registration Statement (A) filed in connection with any employee stock option or other benefit plan, (B) for an
exchange offer or offering of securities solely to the Company’s existing stockholders, (C) for an offering of debt
that is convertible into equity securities of the Company or (D) for a dividend reinvestment plan, or (ii) consummate an
Underwritten Offering for its own account or for the account of stockholders of the Company, then the Company shall give
written notice of such proposed action to all of the Holders as soon as practicable (but in the case of filing a Registration
Statement, not less than ten (10) days before the anticipated filing date of such Registration Statement), which notice shall
(x) describe the amount and type of securities to be included, the intended method(s) of distribution and the name of
the proposed managing Underwriter or Underwriters, if any, and (y) offer to all of the Holders the opportunity to
register the sale of such number of Registrable Securities as such Holders may request in writing within (a) five
(5) days in the case of filing a Registration Statement and (b) two (2) days in the case of an Underwritten
Offering (unless such offering is an overnight or bought Underwritten Offering, then one (1) day), in each case after
receipt of such written notice (such Registration a “Piggyback Registration”). The Company shall,
in good faith, cause such Registrable Securities to be included in such Piggyback Registration and shall use its best efforts
to cause the managing Underwriter or Underwriters of a proposed Underwritten Offering to permit the Registrable Securities
requested by the Holders pursuant to this subsection 2.2.1 to be included in a Piggyback Registration on the same
terms and conditions as any similar securities of the Company included in such Piggyback Registration and to permit the sale
or other disposition of such Registrable Securities in accordance with the intended method(s) of distribution thereof. All
such Holders proposing to include Registrable Securities in an Underwritten Offering under this subsection 2.2.1
shall enter into an underwriting agreement in customary form with the Underwriter(s) selected for such Underwritten Offering
by the Company.

 

    6

     

    

 

2.2.2 Reduction
of Piggyback Registration. If the managing Underwriter or Underwriters in an Underwritten Offering that is to be a Piggyback
Registration, in good faith, advises the Company and the Holders of Registrable Securities participating in the Piggyback Registration
in writing that the dollar amount or number of shares of the equity securities of the Company that the Company desires to sell,
taken together with (i) the shares of equity securities of the Company, if any, as to which Registration or Underwritten Offering
has been demanded pursuant to separate written contractual arrangements with persons or entities other than the Holders of Registrable
Securities hereunder, (ii) the Registrable Securities as to which Registration or Underwritten Offering has been requested
pursuant to Section 2.2 hereof and (iii) the shares of equity securities of the Company, if any, as to which Registration
or Underwritten Offering has been requested pursuant to separate written contractual piggyback registration rights of other stockholders
of the Company, exceeds the Maximum Number of Securities, then:

 

(a)
If the Registration or Underwritten Offering is undertaken for the Company’s account, the Company shall include in any such
Registration or Underwritten Offering (A) first, the Common Stock or other equity securities of the Company that the Company
desires to sell, which can be sold without exceeding the Maximum Number of Securities; (B) second, to the extent that the
Maximum Number of Securities has not been reached under the foregoing clause (A), the Registrable Securities of Holders
exercising their rights to register their Registrable Securities pursuant to subsection 2.2.1 hereof, Pro Rata, which
can be sold without exceeding the Maximum Number of Securities; and (C) third, to the extent that the Maximum Number of Securities
has not been reached under the foregoing clauses (A) and (B), Common Stock or other equity securities of
the Company, if any, as to which Registration or Underwritten Offering has been requested pursuant to written contractual piggyback
registration rights of other stockholders of the Company, which can be sold without exceeding the Maximum Number of Securities;
or

 

(b) If the
Registration or Underwritten Offering is pursuant to a request by persons or entities other than the Holders of Registrable
Securities, then the Company shall include in any such Registration or Underwritten Offering (A) first, Common Stock or
other equity securities of the Company, if any, of such requesting persons or entities, other than the Holders of Registrable
Securities, which can be sold without exceeding the Maximum Number of Securities; (B) second, to the extent that the
Maximum Number of Securities has not been reached under the foregoing clause (A), the Registrable Securities of
Holders exercising their rights to register their Registrable Securities pursuant to subsection 2.2.1, Pro Rata,
which can be sold without exceeding the Maximum Number of Securities; (C) third, to the extent that the Maximum Number
of Securities has not been reached under the foregoing clauses (A) and (B), Common Stock or other
equity securities of the Company that the Company desires to sell, which can be sold without exceeding the Maximum Number of
Securities; and (D) fourth, to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (A), (B)
and (C), Common Stock or other equity securities of the Company for the account of other persons or entities that
the Company is obligated to register pursuant to separate written contractual arrangements with such persons or entities,
which can be sold without exceeding the Maximum Number of Securities.

 

    7

     

    

 

2.2.3 Piggyback
Registration Withdrawal. Any Holder of Registrable Securities shall have the right to withdraw from a Piggyback Registration
for any or no reason whatsoever upon written notification to the Company and the Underwriter or Underwriters (if any) of his, her
or its intention to withdraw from such Piggyback Registration prior to the effectiveness of the Registration Statement filed with
the Commission with respect to such Piggyback Registration. The Company (whether on its own good faith determination or as the
result of a request for withdrawal by persons pursuant to separate written contractual obligations) may withdraw a Registration
Statement filed with the Commission in connection with a Piggyback Registration at any time prior to the effectiveness of such
Registration Statement. Notwithstanding anything to the contrary in this Agreement, the Company shall be responsible for the Registration
Expenses incurred in connection with the Piggyback Registration prior to its withdrawal under this subsection 2.2.3.

 

2.2.4 Unlimited
Piggyback Registration Rights. For purposes of clarity, any Registration or Underwritten Offering effected pursuant to Section 2.2
hereof shall not be counted as an Underwritten Offering pursuant to an Underwritten Demand effected under Section 2.1
hereof.

 

2.3 Restrictions
on Registration Rights. If (A) the Holders have requested an
Underwritten Offering pursuant to an Underwritten Demand and the Company and the Holders are unable to obtain the commitment
of underwriters to firmly underwrite the offer; or (B) the Holders have requested an Underwritten Offering pursuant to an
Underwritten Demand and in the good faith judgment of the Board such Registration or Underwritten Offering would be seriously
detrimental to the Company and the Board concludes as a result that it is essential to defer the filing of such Registration
Statement or the undertaking of such Underwritten Offering at such time, then in each case the Company shall furnish to such
Holders a certificate signed by the Chairman of the Board stating that in the good faith judgment of the Board it would be
seriously detrimental to the Company for such Registration Statement to be filed or to undertake such Underwritten Offering
in the near future and that it is therefore essential to defer the filing of such Registration Statement or undertaking of
such Underwritten Offering. In such event, the Company shall have the right to defer such filing or offering for a period of
not more than thirty (30) days; provided, however, that the Company shall not defer its obligation in this manner more than
once in any twelve (12)-month period.

 

Article 3

COMPANY PROCEDURES

 

3.1 General
Procedures. The Company shall use its reasonable best efforts to effect
such Registration to permit the sale of such Registrable Securities in accordance with the intended plan of distribution thereof,
and pursuant thereto the Company shall, as expeditiously as possible and to the extent applicable:

 

3.1.1 prepare
and file with the Commission within thirty (30) days after the consummation of the Business Combination a Registration Statement
with respect to such Registrable Securities and use its reasonable best efforts to cause such Registration Statement to become
effective and remain effective, including filing a replacement Registration Statement, if necessary, until all Registrable Securities
covered by such Registration Statement have been sold or are no longer outstanding (such period, the “Effectiveness
Period”);

 

    8

     

    

 

3.1.2 prepare
and file with the Commission such amendments and post-effective amendments to the Registration Statement, and such supplements
to the Prospectus, as may be reasonably requested by the Demanding Holders or any Underwriter or as may be required by the rules,
regulations or instructions applicable to the registration form used by the Company or by the Securities Act or rules and regulations
thereunder to keep the Registration Statement effective until all Registrable Securities covered by such Registration Statement
are sold in accordance with the intended plan of distribution set forth in such Registration Statement or supplement to the Prospectus
or are no longer outstanding;

 

3.1.3 prior
to filing a Registration Statement or Prospectus, or any amendment or supplement thereto, furnish without charge to the Underwriters,
if any, and the Holders of Registrable Securities included in such Registration or Underwritten Offering, and such Holders’
legal counsel, copies of such Registration Statement as proposed to be filed, each amendment and supplement to such Registration
Statement (in each case including all exhibits thereto and documents incorporated by reference therein), the Prospectus (including
each preliminary Prospectus) and such other documents as the Underwriters and the Holders of Registrable Securities included in
such Registration or the legal counsel for any such Holders may reasonably request in order to facilitate the disposition of the
Registrable Securities owned by such Holders; provided, that the Company will not have any obligation to provide any document pursuant
to this clause that is available on the Commission’s EDGAR system;

 

3.1.4 prior to any
Underwritten Offering of Registrable Securities, use its best efforts to (i) register or qualify the Registrable
Securities covered by the Registration Statement under such securities or “blue sky” laws of such
jurisdictions in the United States as the Holders of Registrable Securities included in such Registration Statement (in light
of their intended plan of distribution) may request and (ii) take such action necessary to cause such Registrable
Securities covered by the Registration Statement to be registered with or approved by such other governmental authorities as
may be necessary by virtue of the business and operations of the Company and do any and all other acts and things that may be
necessary or advisable to enable the Holders of Registrable Securities included in such Registration Statement to consummate
the disposition of such Registrable Securities in such jurisdictions; provided, however, that the Company shall not be
required to qualify generally to do business in any jurisdiction where it would not otherwise be required to qualify or take
any action to which it would be subject to general service of process or taxation in any such jurisdiction where it is not
then otherwise so subject;

 

3.1.5 cause
all such Registrable Securities to be listed on each securities exchange or automated quotation system on which similar securities
issued by the Company are then listed;

 

    9

     

    

 

3.1.6 provide
a transfer agent or warrant agent, as applicable, and registrar for all such Registrable Securities no later than the effective
date of such Registration Statement;

 

3.1.7 advise
each seller of such Registrable Securities, promptly after it shall receive notice or obtain knowledge thereof, of the issuance
of any stop order by the Commission suspending the effectiveness of such Registration Statement or the initiation or threatening
of any proceeding for such purpose and promptly use its reasonable best efforts to prevent the issuance of any stop order or to
obtain its withdrawal if such stop order should be issued;

 

3.1.8 during
the Effectiveness Period, furnish a conformed copy of each filing of any Registration Statement or Prospectus or any amendment
or supplement to such Registration Statement or Prospectus or any document that is to be incorporated by reference into such Registration
Statement or Prospectus, promptly after such filing of such documents with the Commission to each seller of such Registrable Securities
or its counsel; provided, that the Company will not have any obligation to provide any document pursuant to this clause that is
available on the Commission’s EDGAR system;

 

3.1.9 notify
the Holders at any time when a Prospectus relating to such Registration Statement is required to be delivered under the Securities
Act, of the happening of any event as a result of which the Prospectus included in such Registration Statement, as then in effect,
includes a Misstatement, and then to correct such Misstatement as set forth in Section 3.4 hereof;

 

3.1.10 permit
a representative of the Holders, the Underwriters, if any, and any attorney or accountant retained by such Holders or Underwriter
to participate, at each such person’s own expense, in the preparation of the Registration Statement or the Prospectus, and
cause the Company’s officers, directors and employees to supply all information reasonably requested by any such representative,
Underwriter, attorney or accountant in connection with the Registration; provided, however, that such representatives or Underwriters
enter into a confidentiality agreement, in form and substance reasonably satisfactory to the Company, prior to the release or disclosure
of any such information;

 

3.1.11 obtain
a comfort letter from the Company’s independent registered public accountants in the event of an Underwritten Offering, in
customary form and covering such matters of the type customarily covered by comfort letters as the managing Underwriter may reasonably
request, and reasonably satisfactory to a majority-in-interest of the participating Holders;

 

3.1.12 on
the date the Registrable Securities are delivered for sale pursuant to such Registration, obtain an opinion, dated such date, of
counsel representing the Company for the purposes of such Registration, addressed to the placement agent or sales agent, if any,
and the Underwriters, if any, covering such legal matters with respect to the Registration in respect of which such opinion is
being given as the placement agent, sales agent, or Underwriter may reasonably request and as are customarily included in such
opinions and negative assurance letters, and reasonably satisfactory to such placement agent, sales agent or Underwriter;

 

    10

     

    

 

3.1.13 in
the event of any Underwritten Offering, enter into and perform its obligations under an underwriting agreement, in usual and customary
form, with the managing Underwriter of such offering;

 

3.1.14 make
available to its security holders, as soon as reasonably practicable, an earnings statement covering the period of at least twelve
(12) months beginning with the first day of the Company’s first full calendar quarter after the effective date of the Registration
Statement which satisfies the provisions of Section 11(a) of the Securities Act and Rule 158 thereunder (or any successor
rule promulgated thereafter by the Commission);

 

3.1.15 use
its reasonable efforts to make available senior executives of the Company to participate in customary “road show”
presentations that may be reasonably requested by the Underwriter in any Underwritten Offering; and

 

3.1.16 otherwise,
in good faith, cooperate reasonably with, and take such customary actions as may reasonably be requested by the Holders, in connection
with such Registration.

 

3.2 Registration
Expenses. The Registration Expenses in respect of all Registrations
shall be borne by the Company. It is acknowledged by the Holders that the Holders shall bear all incremental selling expenses
relating to the sale of Registrable Securities, such as Underwriters’ commissions and discounts, brokerage fees, Underwriter
marketing costs and, other than as set forth in the definition of “Registration Expenses,” all reasonable fees
and expenses of any legal counsel representing the Holders.

 

3.3 Requirements
for Participation in Underwritten Offerings. No person or entity may
participate in any Underwritten Offering for equity securities of the Company pursuant to a Registration initiated by the Company
hereunder unless such person or entity (i) agrees to sell such person’s or entity’s securities on the basis provided
in any underwriting arrangements approved by the Company and (ii) completes and executes all customary questionnaires, powers
of attorney, indemnities, lock-up agreements, underwriting agreements and other customary documents as may be reasonably required
under the terms of such underwriting arrangements.

 

3.4 Suspension
of Sales; Adverse Disclosure. Upon receipt of written notice from the
Company that a Registration Statement or Prospectus contains a Misstatement, each of the Holders shall forthwith discontinue disposition
of Registrable Securities until he, she or it has received copies of a supplemented or amended Prospectus correcting the Misstatement
(it being understood that the Company hereby covenants to prepare and file such supplement or amendment as soon as practicable
after the time of such notice), or until he, she or it is advised in writing by the Company that the use of the Prospectus may
be resumed. If the filing, initial effectiveness or continued use of a Registration Statement in respect of any Registration or
Underwritten Offering at any time would require the Company to make an Adverse Disclosure or would require the inclusion in such
Registration Statement of financial statements that are unavailable to the Company for reasons beyond the Company’s control,
the Company may, upon giving prompt written notice of such action to the Holders, delay the filing or initial effectiveness of,
or suspend use of, such Registration Statement for the shortest period of time, but in no event more than thirty (30) days, determined
in good faith by the Company to be necessary for such purpose. In the event the Company exercises its rights under the preceding
sentences in this Section 3.4, the Holders agree to suspend, immediately upon their receipt of the notices referred
to in this Section 3.4, their use of the Prospectus relating to any Registration in connection with any sale or offer
to sell Registrable Securities. The Company shall immediately notify the Holders of the expiration of any period during which
it exercised its rights under this Section 3.4.

 

    11

     

    

 

3.5 Reporting
Obligations. As long as any Holder shall own Registrable Securities,
the Company, at all times while it shall be a reporting company under the Exchange Act, covenants to file timely (or obtain extensions
in respect thereof and file within the applicable grace period) all reports required to be filed by the Company after the date
hereof pursuant to Section 13(a) or 15(d) of the Exchange Act. The Company further covenants that it shall take such further
action as any Holder may reasonably request, all to the extent required from time to time to enable such Holder to sell shares
of Registrable Securities held by such Holder without registration under the Securities Act within the limitation of the exemptions
provided by Rule 144 promulgated under the Securities Act (or any successor rule promulgated thereafter by the Commission),
including providing any legal opinions. Upon the request of any Holder, the Company shall deliver to such Holder a written certification
of a duly authorized officer as to whether it has complied with such requirements.

 

Article 4

INDEMNIFICATION AND CONTRIBUTION

 

4.1 Indemnification.

 

4.1.1 The Company
agrees to indemnify, to the extent permitted by law, each Holder of Registrable Securities, its officers and directors and
each person who controls such Holder (within the meaning of the Securities Act) (collectively, the “Holder
Indemnified Persons”) against all losses, claims, damages, liabilities and expenses (including reasonable
attorneys’ fees and inclusive of all reasonable attorneys’ fees arising out of the enforcement of each such
persons’ rights under this Section 4.1) resulting from any untrue or alleged untrue statement of material
fact contained in any Registration Statement, Prospectus or preliminary Prospectus or any amendment thereof or supplement
thereto or any omission or alleged omission of a material fact required to be stated therein or necessary to make the
statements therein, in the light of the circumstances in which they were made, not misleading, except insofar as the same are
caused by or contained in any information furnished in writing to the Company by or on behalf of such Holder Indemnified
Person specifically for use therein.

 

4.1.2 In
connection with any Registration Statement in which a Holder of Registrable Securities is participating, such Holder shall furnish
to the Company in writing such information and affidavits as the Company reasonably requests for use in connection with any such
Registration Statement or Prospectus and, to the extent permitted by law, shall, severally and not jointly, indemnify the Company,
its directors and officers and agents and each person who controls the Company (within the meaning of the Securities Act) against
any losses, claims, damages, liabilities and expenses (including reasonable attorneys’ fees and inclusive of all reasonable
attorneys’ fees arising out of the enforcement of each such persons’ rights under this Section 4.1) resulting
from any untrue or alleged untrue statement of material fact contained in any Registration Statement, Prospectus or preliminary
Prospectus or any amendment thereof or supplement thereto or any omission or alleged omission of a material fact required to be
stated therein or necessary to make the statements therein, in the light of the circumstances in which they were made, not misleading,
but only to the extent that the same are made in reliance on and in conformity with information relating to the Holder so furnished
in writing to the Company by or on behalf of such Holder specifically for use therein. In no event shall the liability of any selling
Holder hereunder be greater in amount than the net proceeds received by such Holder from the sale of Registrable Securities pursuant
to such Registration Statement giving rise to such indemnification obligation.

 

    12

     

    

 

4.1.3 Any
person entitled to indemnification herein shall (i) give prompt written notice to the indemnifying party of any claim with
respect to which it seeks indemnification (provided that the failure to give prompt notice shall not impair any person’s
right to indemnification hereunder to the extent such failure has not materially prejudiced the indemnifying party) and (ii) unless
in such indemnified party’s reasonable judgment a conflict of interest between such indemnified and indemnifying parties
may exist with respect to such claim or there may be reasonable defenses available to the indemnified party that are different
from or additional to those available to the indemnifying party, permit such indemnifying party to assume the defense of such claim
with counsel reasonably satisfactory to the indemnified party. If such defense is assumed, the indemnifying party shall not be
subject to any liability for any settlement made by the indemnified party without its consent (but such consent shall not be unreasonably
withheld). An indemnifying party who is not entitled to, or elects not to, assume the defense of a claim shall not be obligated
to pay the fees and expenses of more than one counsel for all parties indemnified by such indemnifying party with respect to such
claim, unless in the reasonable judgment of any indemnified party a conflict of interest may exist between such indemnified party
and any other of such indemnified parties with respect to such claim. No indemnifying party shall, without the consent of the indemnified
party, consent to the entry of any judgment or enter into any settlement which cannot be settled in all respects by the payment
of money (and such money is so paid by the indemnifying party pursuant to the terms of such settlement) or which settlement does
not include as an unconditional term thereof the giving by the claimant or plaintiff to such indemnified party of a release from
all liability in respect to such claim or litigation.

 

4.1.4 The
indemnification provided for under this Agreement shall remain in full force and effect regardless of any investigation made by
or on behalf of the indemnified party or any officer, director or controlling person of such indemnified party and shall survive
the transfer of securities.

 

4.1.5 If
the indemnification provided under Section 4.1 is held by a court of competent jurisdiction to be unavailable to an
indemnified party in respect of any losses, claims, damages, liabilities and expenses referred to herein, then the indemnifying
party, in lieu of indemnifying the indemnified party, shall to the extent permitted by law contribute to the amount paid or payable
by the indemnified party as a result of such losses, claims, damages, liabilities and expenses in such proportion as is appropriate
to reflect the relative fault of the indemnifying party and the indemnified party, as well as any other relevant equitable considerations.
The relative fault of the indemnifying party and indemnified party shall be determined by a court of law by reference to, among
other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a
material fact relates to information supplied by such indemnifying party or such indemnified party and the indemnifying party’s
and indemnified party’s relative intent, knowledge, access to information and opportunity to correct or prevent such action;
provided, however, that the liability of any Holder under this subsection 4.1.5 shall be limited to the amount of the
net proceeds received by such Holder in such offering giving rise to such liability. The amount paid or payable by a party as a
result of the losses or other liabilities referred to above shall be deemed to include, subject to the limitations set forth in
subsections 4.1.1, 4.1.2 and 4.1.3 above, any legal or other fees, charges or expenses reasonably
incurred by such party in connection with any investigation or proceeding. The parties hereto agree that it would not be just and
equitable if contribution pursuant to this subsection 4.1.5 were determined by pro rata allocation or by any other
method of allocation, which does not take account of the equitable considerations referred to in this subsection 4.1.5.
No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled
to contribution pursuant to this subsection 4.1.5 from any person who was not guilty of such fraudulent misrepresentation.

 

    13

     

    

 

Article 5

MISCELLANEOUS

 

5.1 Notices.
Any notice or communication under this Agreement must be in writing and given by (i) deposit in the United States mail, addressed
to the party to be notified, postage prepaid and registered or certified with return receipt requested, (ii) delivery in
person or by courier service providing evidence of delivery or (iii) transmission by hand delivery, telecopy, telegram, facsimile
or email. Each notice or communication that is mailed, delivered or transmitted in the manner described above shall be deemed
sufficiently given, served, sent, and received, in the case of mailed notices, on the third (3rd) business day following the date
on which it is mailed, in the case of notices delivered by courier service, hand delivery, telecopy or telegram, at such time
as it is delivered to the addressee (with the delivery receipt or the affidavit of messenger) or at such time as delivery is refused
by the addressee upon presentation, and in the case of notices delivered by facsimile or email, at such time as it is successfully
transmitted to the addressee. Any notice or communication under this Agreement must be addressed, if to the Company, to: 1202
BMC Drive, Cedar Park, TX 78613, or by email at: thomas@hyliion.com if to the Sponsor or Tortoise Borrower, to: 5100 W. 115th
Place, Leawood, KS 66211, or by email at: JKruske@tortoiseadvisors.com, and, if to any other Holder, to the address of such
Holder as it appears in the applicable register for the Registrable Securities or such other address as may be designated in writing
by such Holder (including on the signature pages hereto). Any party may change its address for notice at any time and from time
to time by written notice to the other parties hereto, and such change of address shall become effective thirty (30) days after
delivery of such notice as provided in this Section 5.1.

 

5.2 Assignment;
No Third Party Beneficiaries.

 

5.2.1 This
Agreement and the rights, duties and obligations of the Company hereunder may not be assigned or delegated by the Company in whole
or in part.

 

5.2.2 This
Agreement and the provisions hereof shall be binding upon and shall inure to the benefit of each of the parties and its successors.

 

5.2.3 This Agreement
shall not confer any rights or benefits on any persons that are not parties hereto, other than as expressly set forth in this
Agreement and Section 5.2 hereof.

 

5.2.4 No
assignment by any party hereto of such party’s rights, duties and obligations hereunder shall be binding upon or obligate
the Company unless and until the Company shall have received (i) written notice of such assignment as provided in Section 5.1
hereof and (ii) the written agreement of the assignee, in a form reasonably satisfactory to the Company, to be bound by the
terms and provisions of this Agreement (which may be accomplished by an addendum or certificate of joinder to this Agreement).
Any transfer or assignment made other than as provided in this Section 5.2 shall be null and void.

 

    14

     

    

 

5.3 Counterparts.
This Agreement may be executed in multiple counterparts (including facsimile or PDF counterparts), each of which shall be deemed
an original, and all of which together shall constitute the same instrument, but only one of which need be produced.

 

5.4 Governing
Law; Venue. NOTWITHSTANDING THE PLACE WHERE THIS AGREEMENT MAY BE EXECUTED
BY ANY OF THE PARTIES HERETO, THE PARTIES EXPRESSLY AGREE THAT THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED UNDER THE LAWS
OF THE STATE OF NEW YORK AS APPLIED TO AGREEMENTS AMONG NEW YORK RESIDENTS ENTERED INTO AND TO BE PERFORMED ENTIRELY WITHIN NEW
YORK, WITHOUT REGARD TO THE CONFLICT OF LAW PROVISIONS OF SUCH JURISDICTION.

 

5.5 Amendments
and Modifications. Upon the written consent of the Company and the Holders
of at least a majority in interest of the Registrable Securities at the time in question, compliance with any of the provisions,
covenants and conditions set forth in this Agreement may be waived, or any of such provisions, covenants or conditions may be
amended or modified; provided, however, that notwithstanding the foregoing, any amendment hereto or waiver hereof that adversely
affects one Holder, solely in his, her or its capacity as a holder of the shares of capital stock of the Company, in a manner
that is materially different from the other Holders (in such capacity) shall require the consent of the Holder so affected. No
course of dealing between any Holder or the Company and any other party hereto or any failure or delay on the part of a Holder
or the Company in exercising any rights or remedies under this Agreement shall operate as a waiver of any rights or remedies of
any Holder or the Company. No single or partial exercise of any rights or remedies under this Agreement by a party shall operate
as a waiver or preclude the exercise of any other rights or remedies hereunder or thereunder by such party.

 

5.6 Other
Registration Rights. The Company represents and warrants that no person,
other than (a) a Holder of Registrable Securities, (b) the parties to those certain Subscription Agreements, dated as of June
18, 2020, by and between the Company and certain investors, and (c) Atlas Point Energy Infrastructure Fund, LLC, pursuant to that
certain Amended and Restated Forward Purchase Agreement, dated as of February 6, 2019, as amended, by and among the Company, the
Sponsor and Atlas Point Energy Infrastructure Fund, LLC, has any right to require the Company to register any securities of the
Company for sale or to include such securities of the Company in any Registration filed by the Company for the sale of securities
for its own account or for the account of any other person. Further, the Company represents and warrants that this Agreement supersedes
any other registration rights agreement or agreement with similar terms and conditions and in the event of a conflict between
any such agreement or agreements and this Agreement, the terms of this Agreement shall prevail.

 

5.7 Term.
This Agreement shall terminate upon the earlier of (i) the tenth (10th) anniversary of the date of this Agreement and (ii) the
date as of which the Holders cease to hold any Registrable Securities. The provisions of Article 4 shall survive
any termination.

 

    15

     

    

 

IN WITNESS WHEREOF,
the undersigned have caused this Agreement to be executed as of the date first written above.

 

	 	COMPANY:
	 	 
	 	HYLIION HOLDINGS CORP.,
	 	a Delaware corporation
	 	 
	 	By:	/s/ Thomas Healy
	 	Name: 	Thomas Healy
	 	Title:	Chief Executive Officer

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	HOLDERS:
	 	 
	 	TORTOISE SPONSOR LLC,
	 	a Delaware limited liability company
	 	 
	 	By: TortoiseEcofin Borrower LLC (f/k/a Tortoise
	 	Borrower LLC), Managing Member
	 	 	     
	 	By:	/s/ Michelle Johnston
	 	Name: 	Michelle Johnston
	 	Title:	Chief Financial Officer

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	TORTOISEECOFIN BORROWER LLC,
	 	a Delaware limited liability company
	 	 
	 	By:	/s/ Michelle Johnston
	 	Name: 	Michelle Johnston
	 	Title:	Chief Financial Officer

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Andrew J. Orekar
	 	Andrew J. Orekar
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Andrew J. Orekar
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Frank M. Semple
	 	Frank M. Semple
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Frank M. Semple
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Sidney L. Tassin
	 	Sidney L. Tassin
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Sidney L. Tassin
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Vincent T. Cubbage
	 	Vincent T. Cubbage
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Vincent T. Cubbage
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Stephen Pang
	 	Stephen Pang
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Stephen Pang
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Steven C. Schnitzer
	 	Steven C. Schnitzer
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Steven C. Schnitzer
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Darrell Brock
	 	Darrell Brock
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Darrell Brock
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Evan Zimmer
	 	Evan Zimmer
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Evan Zimmer
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Ed Russell
	 	Ed Russell
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Ed Russell
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Thomas Healy
	 	Thomas Healy
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Thomas Healy
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Edward Olkkola
	 	Edward Olkkola
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Edward Olkkola
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Jeanne Olkkola
	 	Jeanne Olkkola
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Jeanne Olkkola
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Howard Jenkins
	 	Howard Jenkins
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Howard Jenkins
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Patrick Sexton
	 	Patrick Sexton
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Howard Jenkins
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	AXIOMA VENTURES, LLC
	 	 
	 	By: Axioma Holdings, LLC
	 	Its: Sole Member
	 	By: Axioma Management, LLC
	 	Its: Manager
	 	 
	 	By:	/s/ Howard Jenkins
	 	Name: 	Howard Jenkins
	 	Title:	Manager
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Howard Jenkins
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	COLLE CAPITAL PARTNERS I, L.P.
	 	 
	 	By:	/s/ Victoria Grace
	 	Name: 	Victoria Grace
	 	Title:	Authorized Person
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Victoria Grace
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	COLLE HLN ASSOCIATES LLC
	 	 
	 	By:	/s/ Victoria Grace
	 	Name: 	Victoria Grace
	 	Title:	Authorized Person
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Victoria Grace
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	CONCORD PARTNERS LLC
	 	 
	 	By:	/s/ David Douglas
	 	Name: 	 David Douglas
	 	Title:	Vice President and Corporate Secretary
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: David Douglas
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	CRA FUND II LLC
	 	 
	 	By: Berkshire Partners LLC
	 	Its: Manager
	 	 
	 	By:	/s/ Daniel P. Carbonneau
	 	Name: 	Daniel P. Carbonneau
	 	Title:	Authorized Signatory
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Daniel P. Carbonneau
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	DANA LIMITED
	 	 
	 	By:	/s/ Timothy Kraus
	 	Name: 	Timothy Kraus
	 	Title:	Senior Vice President and Treasurer
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: General Counsel
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ David Douglas
	 	David Douglas
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: David Douglas
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	DOUGCAP, LLC
	 	 
	 	By:	/s/ Steven Douglas
	 	Name: 	Steven Douglas
	 	Title:	Managing Member
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Steven Douglas
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	FJ MANGEMENT INC.
	 	 
	 	By:	/s/ Richard L. Bozzelli
	 	Name: 	Richard L. Bozzelli
	 	Title:	Chief Financial Officer and Treasurer
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Richard L. Bozzelli
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	/s/ Greg Van de Vere
	 	Greg Van de Vere
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Greg Van de Vere
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	HYL INVESTORS, LP
	 	 
	 	By:	/s/ Steven Douglas
	 	Name: 	Steven Douglas
	 	Title:	Managing Member
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Steven Douglas
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	NEW ERA CAPITAL PARTNERS, L.P.
	 	 
	 	By:	 /s/ Gideon Argov
	 	Name: 	 Gideon Argov
	 	Title:	General Partner
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Gideon Argov
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	ROTUNDA ENTERPRISES, LLC
	 	 
	 	By:	/s/ Steven Douglas
	 	Name: 	Steven Douglas
	 	Title:	Managing Member
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Steven Douglas
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	SENSATA TECHNOLOGIES, INC.
	 	 
	 	By:	/s/ Hans Lidforss
	 	Name: 	Hans Lidforss
	 	Title:	SVP, Chief Strategy & 

Corporate Development Officer
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Hans Lidforss
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

 

     

     

    

 

	 	SUMITOMO CORPORATION OF AMERICAS
	 	 
	 	By:	/s/ Tatsuo Ishibashi
	 	Name: 	 Tatsuo Ishibashi
	 	Title:	Head of Auto Manufacturing Unit &

 General Manager of Detroit Office
	 	 
	 	Address for notice:
	 	 
	 	*
	 	Attention: Harumi Cassetta
	 	Electronic Mail: *

 

[Signature Page to Amended and Restated
Registration Rights Agreement]

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00315-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00315-of-00352.parquet"}]]