Document:

Exhibit 10.35

 

Execution Version

 

STOCKHOLDERS AGREEMENT

 

This Stockholders
Agreement (this “Agreement”) is entered into on December 6, 2018, by and among Concrete Pumping Holdings,
Inc. (f/k/a Concrete Pumping Holdings Acquisition Corp.), a Delaware corporation (the “Company”), and the undersigned
parties listed on the signature pages hereto (each, an “Investor” and, collectively, the “Investors”).
Capitalized terms used in this Agreement have the meanings given to them in Section 1.01.

 

RECITALS

 

WHEREAS, reference
is made to that certain Agreement and Plan of Merger, by and among the Company, Industrea Acquisition Corp. (“Industrea”),
Concrete Pumping Intermediate Acquisitions Corp., Concrete Pumping Merger Sub Inc., Industrea Acquisition Merger Sub Inc., and
Concrete Pumping Holdings, Inc. (“CPH”), and PGP Investors, LLC solely in its capacity as the initial Holder
Representative thereunder, dated September 7, 2018 (the “Merger Agreement”), which provides for the business
combination among the Company, Industrea and CPH (the “Business Combination”), pursuant to which each of CPH
and Industrea will be acquired by the Company and become wholly owned subsidiaries of the Company;

 

WHEREAS, pursuant
to the terms of those certain Rollover Agreements, each dated September 7, 2018 (the “Rollover Agreements”),
by and between the Company and the CPH equity owners parties thereto (collectively with the UK Rollover Investors (as defined below),
the “Rollover Investors”), in connection with the consummation of the Business Combination, the Company will
issue shares of its common stock, par value $0.0001 per share (“Company Common Stock”) to the Rollover Investors;

 

WHEREAS, pursuant
to the terms of (i) that certain Share Purchase Agreement dated September 7, 2018 (the “UK Share Purchase Agreement”),
by and between Lux Concrete Holdings II S.á r.l. (“Lux II”) and the Vendors parties thereto (the “UK
Rollover Investors”), and (ii) those certain Put and Call Options (the “UK Put/Call Agreement”) by
and among the UK Rollover Investors, Lux II, CPH, the Company and the other Subsidiaries of CPH and the Company named therein,
in connection with the consummation of the Business Combination, the Company will issue shares of Company Common Stock to the UK
Rollover Investors;

 

WHEREAS, pursuant
to the Merger Agreement the Company will issue shares of Company Common Stock to the holders of Industrea common stock on a one-for-one
basis in exchange for their shares of Industrea common stock;

 

WHEREAS, prior
to Industrea’s initial public offering (the “IPO”), Industrea Alexandria LLC (the “Sponsor”)
purchased an aggregate of 5,750,000 shares of Class B common stock, par value $0.0001 per share, of Industrea (the “Founder
Shares”), and subsequently transferred a total of 28,750 shares of Founder Shares and 277,500 Private Placement Warrants
(as define to each of Industrea’s five independent directors (collectively with the Sponsor, the “Initial Investors”);

 

WHEREAS, the
Founder Shares are convertible into shares of Class A common stock, par value $0.0001 per share, of Industrea (“Class
A Common Stock”) on the terms provided in Industrea’s second amended and restated certificate of incorporation;

 

WHEREAS, the
Sponsor purchased an aggregate of 11,100,000 warrants exercisable for shares of Class A Common Stock in a private placement that
was completed simultaneously with the consummation of the IPO (the “Private Placement Warrants”);

 

     

     

    

 

WHEREAS, in
connection with the Business Combination, the Company will assume all of the outstanding warrants (including the Private Placement
Warrants) and each such warrant will become exercisable for one share of Company Common Stock in accordance with the terms of the
Warrant Agreement; and

 

WHEREAS, pursuant
to the terms of that certain Subscription Agreement, dated September 7, 2018 (the “Argand Subscription Agreement”),
by and between Industrea and Argand Partners Fund, LP (the “Argand Investor”), in connection with the consummation
of the Business Combination, the Argand Investor will purchase shares of Class A Common Stock (“Argand PIPE Shares”)
which will be exchanged for shares of Company Common Stock on a one-for-one basis pursuant to the Merger Agreement.

 

NOW, THEREFORE,
in consideration of the mutual covenants and agreements set forth herein, and for other good and valuable consideration, the receipt
and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

 

SECTION
1

Definitions

 

1.1         Certain
Definitions. As used in this Agreement, the following terms shall have the meanings set
forth below:

 

(a)         
“Affiliate” of any person or entity, shall mean any other person or entity that
directly or indirectly, through one or more intermediaries, controls, is controlled by, or is under common control with, such first
person or entity. As used in this definition, the term “control,” including the correlative terms “controlled
by” and “under common control with,” means (i) the direct or indirect ownership of more than 50% of the voting
rights of a person or entity or (ii) the possession, directly or indirectly, of the power to direct or cause the direction of management
or policies (whether through ownership of securities or any equity or other ownership interest, by contract or otherwise). For
the avoidance of doubt, for purposes of this Agreement (i) the Peninsula Holder shall not be considered an Affiliate of the Company
or any of its subsidiaries, and (ii)(a) any fund, entity or account managed, advised or sub-advised, directly or indirectly, by
a Holder or any of its Affiliates, shall be considered an Affiliate of such Holder and (b) with respect to any fund, entity or
account managed, advised or sub-advised directly or indirectly, by any Holder or any of its Affiliates, the direct or indirect
equity owners thereof, including limited partners of any Holder or any Affiliate thereof, shall be considered an Affiliate of such
Holder..

 

(b)         “Agreement”
has the meaning set forth in the Preamble.

 

(c)         “Argand
Investor” has the meaning set forth in the Recitals. 

 

(d)         “Argand
PIPE Shares” has the meaning set forth in the Recitals.

 

(e)         “Board”
shall mean the Company’s Board of Directors.

 

(f)          “Business
Combination” has the meaning set forth in the Recitals.

 

(g)         “CPH
Management Holders” shall mean the Rollover Investors set forth on Exhibit B hereto.

 

(h)        
“Class A Common Stock” has the meaning set forth in the Recitals.

 

    	 	2	 

     

    

 

(i)          “Closing”
shall mean the closing of the transactions contemplated under the Merger Agreement.

 

(j)          “Commission”
shall mean the United States Securities and Exchange Commission.

 

(k)          “Company”
has the meaning set forth in the Preamble.

 

(l)          
“Company Common Stock” has the meaning set forth in the Recitals.

 

(m)        
“Competitor” means the concrete pumping and concrete waste management services
businesses listed on an officer’s certificate delivered by the Company to the Peninsula Holder on the date hereof, which
has been mutually agreed to by the Company and the Peninsula Holder prior to the date hereof, which certificate may be updated
after the date hereof, from time to time, upon the mutual agreement of the Company and the Peninsula Holder acting reasonably and
in good faith. 

 

(n)         “Competitor
Director” has the meaning set forth in Section 4.3.

 

(o)         
“Dollars” or “$” shall mean the currency of the United States
of America.

 

(p)         “Exchange
Act” shall mean the Securities Exchange Act of 1934, as amended, and the rules and regulations of the Commission promulgated
thereunder, all as the same shall be in effect at the time.

 

(q)         “FINRA”
has the meaning set forth in Section 2.5(q).

 

(r)          “Founder
Shares” has the meaning set forth in the Recitals.

 

(s)          “Holder”
shall mean an Investor who holds Registrable Securities (including their donees, pledgees, assignees, transferees and other successors)
and any holder of Registrable Securities to whom the registration rights conferred by this Agreement have been duly and validly
transferred in accordance with Section 2.11 of this Agreement.

 

(t)          “IPO”
has the meaning set forth in the Recitals.

 

(u)          “Indemnified
Party” has the meaning set forth in Section 2.7(c).

 

(v)         “Indemnifying
Party” has the meaning set forth in Section 2.7(c).

 

(w)         “Industrea”
has the meaning set forth in the Recitals.

 

(x)          “Initial
Agreement” has the meaning set forth in the Recitals.

 

(y)         “Initial
Investors” shall mean the holders of the Founder Shares and the Private Placement Warrants set forth on Exhibit A
hereto.

 

(z)          “Initiating
Holders” shall mean any Holder or group of Holders holding more than $25,000,000 million in Registrable Securities, based
on the closing price of the Company’s Common Stock on the day on which any request or notification is made under this Agreement.

 

    	 	3	 

     

    

 

(aa)       “Investors”
has the meaning set forth in the Preamble.

 

(bb)       “Majority
Holders” has the meaning set forth in Section 2.5.

 

(cc)       “Merger
Agreement” has the meaning set forth in the Recitals.

 

(dd)      
“New Registration Statement” has the meaning set forth in Section 2.1(a)(iii).

 

(ee)       “Non-Management
CPH Holders” means the Rollover Investors set forth on Exhibit C hereto.

 

(ff)         “One
Director Range” means the Peninsula Holder’s beneficial ownership of more than five percent (5%) but not more than
fifteen percent (15%) of the issued and outstanding shares of Company Common Stock as of the Closing.

 

(gg)       “Other
Selling Stockholders” shall mean persons or entities other than Holders who, by virtue of agreements with the Company,
are entitled to include their Other Shares in certain registrations hereunder.

 

(hh)      “Other
Shares” shall mean securities of the Company, other than Registrable Securities (as defined below), with respect to which
registration rights have been granted.

 

(ii)         “PDF”
has the meaning set forth in Section 5.12.

 

(jj)         “Peninsula
Board Right Period” has the meaning set forth in Section 4.2.

 

(kk)       “Peninsula
Director” means a member of the Board who was appointed or elected to the Board as a Peninsula Nominee.

 

(ll)         “Peninsula
Director Replacement” has the meaning set forth in Section 4.3.

 

(mm)     “Peninsula
Holder” means BBCP Investors, LLC.

 

(nn)       “Peninsula
Nominee(s)” means an individual(s) designated by the Peninsula Holder for election (or re-election) to the Board.

 

(oo)       “Peninsula
Takedown” has the meaning set forth in Section 2.2(a).

 

(pp)       “Portfolio
Company” means any corporation, limited liability company, trust, joint venture, association, company, partnership, collective
investment scheme or other entity in which the Peninsula Holder has invested, directly or indirectly, and which constitutes an
Affiliate of the Peninsula Holder as defined above. 

 

(qq)       “Preferred
Stock” has the meaning set forth in clause (ss) of this Section 1.1.

 

(rr)         “Preferred
Stock Conversion Shares” means the Company Common Stock issued upon conversion of the Preferred Stock.

 

(ss)       “Preferred
Stock Subscription Agreement” means the subscription agreement, dated September 7, 2018, between the Company and the
other parties thereto, providing for the issuance and sale by the Company of shares of the Company’s Series A Convertible
Perpetual Preferred Stock (the “Preferred Stock”). 

 

    	 	4	 

     

    

 

(tt)        “Private
Placement Warrants” has the meaning set forth in the Recitals.

 

(uu)      The
terms “register,” “registered” and “registration” shall refer to a registration
effected by preparing and filing a registration statement in compliance with the Securities Act and applicable rules and regulations
thereunder, and the declaration or ordering of the effectiveness of such registration statement.

 

(vv)      “Registrable
Securities” shall mean (i) Company Common Stock issued in connection with the Closing to (1) the Initial Investors, as
set forth on Exhibit A hereto, (2) the CPH Management Holders, including Company Common Stock issuable upon the exercise
of stock options issued to such Holders at the Closing, as set forth on Exhibit B hereto, and (3) the Non-Management CPH
Holders, as set forth on Exhibit C hereto, (ii) the Private Placement Warrants (including any Company Common Stock issued
or issuable upon the exercise of any such Private Placement Warrants), (iii) Company Common Stock issued or issuable upon the exercise
of any warrants of the Company (other than Private Placement Warrants) that are held by an Initial Investor (or its designee),
and (iv) any other equity security of the Company issued or issuable with respect to any such shares of Company Common Stock by
way of a stock dividend or stock split or in connection with a combination of shares, capitalization, merger, consolidation or
reorganization; provided, however, that, as to any particular Registrable Security, such securities shall cease to be Registrable
Securities when: (1) 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; (2) 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; (3) such securities shall have ceased to be outstanding; (4) such securities
have been sold pursuant to Rule 144 promulgated under the Securities Act without volume or manner of sale restrictions contained
therein; or (5) such securities have been sold to, or through, a broker, dealer or underwriter in a public distribution or other
public securities transaction; provided, further, that Registrable Securities shall include any shares of Company Common Stock
acquired by a Holder after the date of this Agreement, that, based on the good faith determination of such Holder (after consultation
with the Company’s outside counsel), may not be resold publicly pursuant to the exemption from registration under Section
4(a)(1) of the Securities Act.

 

(ww)     “Registration
Expenses” shall mean all expenses incurred in effecting any registration pursuant to this Agreement, including, without
limitation, all registration, qualification and filing fees (including fees with respect to filings required to be made with FINRA,
and any fees of the securities exchange or automated quotation system on which the Company Common Stock is then listed or quoted),
printing expenses, escrow fees, fees and disbursements of counsel for the Company, one (1) counsel for the Holders requesting to
include their securities in such registration, to be selected by the Holders of a majority of the Registrable Securities to be
included in such registration, blue sky fees and expenses (including reasonable fees and disbursements of counsels for the Holders
in connection with blue sky compliance), and any fees and disbursements of accountants retained by the Company incident to or required
by any such registration, but shall not include Selling Expenses or fees and disbursements of other counsel(s) for the Holders.

 

(xx)        “Representatives”
means, with respect to any person, any of such person’s officers, directors, employees, agents, attorneys, accountants, actuaries,
consultants, equity financing partners or financial advisors or other person associated with, or acting on behalf of, such person.

 

    	 	5	 

     

    

 

(yy)       “Resale
Shelf Registration Statement” has the meaning set forth in Section 2.1(a)(i).

 

(zz)        “Restricted
Securities” shall mean any Registrable Securities that are required to bear a legend restricting transfer.

 

(aaa)     “Rule 144”
shall mean Rule 144 as promulgated by the Commission under the Securities Act, as such Rule may be amended from time
to time, or any similar successor rule that may be promulgated by the Commission.

 

(bbb)    “Rule 145”
shall mean Rule 145 as promulgated by the Commission under the Securities Act, as such Rule may be amended from time
to time, or any similar successor rule that may be promulgated by the Commission

 

(ccc)     “Securities Act” shall mean the Securities Act of 1933, as amended.

 

(ddd)    “Selling
Expenses” shall mean all underwriting discounts, selling commissions and stock transfer taxes applicable to the sale
of Registrable Securities and fees and disbursements of counsel for any Holder (other than the fees and disbursements of counsel
to the Holders included in Registration Expenses).

 

(eee)     “Sponsor” has the meaning set forth in the Recitals.

 

(fff)       “Suspension
Notice” has the meaning set forth in Section 2.1(f).

 

(ggg)    “Three
Director Range” means the Peninsula Holder’s beneficial ownership of more than twenty-five percent (25%) of the
issued and outstanding shares of Company Common Stock as of the Closing.

 

(hhh)    “Transfer”
shall mean the (a) sale of, offer to sell, contract or agreement to sell, hypothecate, pledge, grant of any option to purchase
or otherwise dispose of or agreement to dispose of, directly or indirectly, or establishment or increase of a put equivalent position
or liquidation with respect to or decrease of a call equivalent position within the meaning of Section 16 of the Exchange Act,
and the rules and regulations of the Commission promulgated thereunder with respect to, any security, or (b) entry into any swap
or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any security,
whether any such transaction is to be settled by delivery of such securities, in cash or otherwise; provided, that a Transfer shall
not be deemed to have been made by the Peninsula Holder solely as a result of direct or indirect transfers of equity interests
in the Peninsula Holder so long as PGP Investors, LLC or its Affiliates retain sole voting control over the Peninsula Holder following
any such direct or indirect transfer.

 

(iii)        “Two
Director Range” means the Peninsula Holder’s beneficial ownership of more than fifteen percent (15%) but not more
than twenty five percent (25%) of the issued and outstanding shares of Company Common Stock as of the Closing. 

 

(jjj)        “Underwritten
Takedown” shall mean an underwritten public offering of Registrable Securities pursuant to an effective registration
statement.

 

(kkk)     “Warrant
Agreement” has the meaning set forth in the Recitals.

 

    	 	6	 

     

    

 

SECTION
2

Registration Rights

 

2.1         Registration

 

(a)          Registration
Requirements. The Company shall, not later than ninety (90) days after the Closing, prepare and file with the Commission
a registration statement on Form S-3, or if Form S-3 is not available, Form S-1 or such other registration statement form that
is available to the Company, and take all such other actions as are necessary to ensure that there is an effective “shelf”
registration statement containing a prospectus that remains current covering (and to qualify under required U.S. state securities
laws, if any) the offer and sale of all Registrable Securities by the Holders on a continuous or delayed basis pursuant to Rule
415 of the Securities Act (the registration statement, the “Resale Shelf Registration Statement”). The Company
shall use reasonable best efforts to cause the Commission to declare the Resale Shelf Registration Statement effective as soon
as possible thereafter but in any event within one hundred fifty (150) days of the Closing, and to remain effective and the prospectus
contained therein current until all Holders cease to hold Registrable Securities. The Resale Shelf Registration Statement shall
provide for any method or combination of methods of resale of Registrable Securities legally available to, and requested by, the
Holders, and shall comply with the relevant provisions of the Securities Act and Exchange Act. At the time the Resale Shelf Registration
Statement is declared effective, each Investor shall be named as a selling securityholder in the Resale Shelf Registration Statement
and the related prospectus in such a manner as to permit such Investor to deliver such prospectus to purchasers of Registrable
Securities in accordance with applicable law. If the Resale Shelf Registration Statement is on Form S-3 and ceases to be effective,
then the Company shall, as soon as practicable but in any event no later than the earlier of (i) if the Company has filed with
the Commission all periodic reports required to be filed under the Exchange Act, sixty (60) days after the date on which the Resale
Shelf Registration Statement ceased to be effective and (ii) if the Company has not filed with the Commission all periodic reports
required to be filed under the Exchange Act, sixty (60) days after the date on which the Company files such reports with the Commission,
prepare and file with the Commission a post-effective amendment to the Resale Shelf Registration Statement or new registration
statement on an available form covering all the Registrable Securities, and shall use its reasonable best efforts to cause such
registration statement to be declared effective by the Commission within seventy-five (75) days after such filing and to maintain
the effectiveness of such registration statement until all Holders cease to hold Registrable Securities. Upon effectiveness, such
registration statement shall constitute the “Resale Shelf Registration Statement” for all purposes under this Agreement.

 

(b)          Request
for Underwritten Takedowns. The Holders that qualify as Initiating Holders will be entitled to an unlimited number of Underwritten
Takedowns with respect to their Registrable Securities. If the Company shall receive from Initiating Holders a written request
signed by such Initiating Holders that the Company effect any Underwritten Takedown with respect to all or a part of the Registrable
Securities (such request shall state the number of shares of Registrable Securities to be disposed of by such Initiating Holders),
the Company will:

 

(i)          promptly,
and in any event, within five (5) days after receiving such request, give written notice of the proposed Underwritten Takedown
to all other Holders; and

 

(ii)         as
soon as practicable, use its reasonable best efforts to cause the Commission to declare such Underwritten Takedown effective within
sixty (60) days thereafter (including, without limitation, filing post-effective amendments, one or more prospectus supplements,
appropriate qualifications under any applicable blue sky or other state securities laws, and appropriate compliance with the Securities
Act) and to permit and facilitate the sale and distribution in an underwritten offering of all or such portion of such Registrable
Securities as are specified in such request, together with all or such portion of the Registrable Securities of any Holder or Holders
joining in such request as are specified in a written request received by the Company within five (5) days after such written notice
from the Company is mailed or delivered.

 

    	 	7	 

     

    

 

(c)          Limitations
on Underwritten Takedowns. The Company shall not be obligated to effect any Underwritten Takedown pursuant to this Section
2.1:

 

(i)          If
the Initiating Holders, together with the holders of any other securities of the Company entitled to inclusion in such Underwritten
Takedown, propose to sell Registrable Securities and such other securities (if any), the aggregate proceeds of which are anticipated
to be less than $25,000,000; or

 

(ii)         In
any particular jurisdiction in which the Company would be required to execute a general consent to service of process in effecting
such registration, qualification, or compliance, unless the Company is already subject to service in such jurisdiction and except
as may be required by the Securities Act; or 

 

(iii)        Within
one hundred twenty (120) days of the closing of any other Underwritten Takedown.

 

(d)          Other
Shares. Any Underwritten Takedown may, subject to the provisions of Section 2.1(f), include Other Shares, and may
include securities of the Company being sold for the account of the Company, provided that, any Other Shares or securities
of the Company to be included in an Underwritten Takedown must be the subject of an effective shelf registration statement at the
time the Company receives the request for an Underwritten Takedown from the Initiating Holders.

 

(e)          Underwriting;
Cutback. If the Company shall request inclusion in any Underwritten Takedown of securities to be sold for its own account,
or if other persons shall request inclusion of Other Shares in any Underwritten Takedown, the Initiating Holders shall, on behalf
of all Holders, offer to include such securities in the underwriting and such offer shall be conditioned upon the participation
of the Company or such other persons in such underwriting and the inclusion of the Company’s and such other person’s
securities of the Company and their acceptance of the applicable provisions of this Section 2. The Company shall (together
with all Holders and other persons proposing to distribute their securities through such underwriting) enter into an underwriting
agreement in customary form with the representative of the underwriter or underwriters selected for such underwriting by the Company,
which underwriters are reasonably acceptable to a majority-in-interest of the Initiating Holders. No Holder (or its permitted transferee
or assignee under Section 2.11) shall be required to make any representations or warranties to, or agreements with, the
Company or the underwriters other than representations, warranties or agreements regarding such Holder’s (or such transferee’s
or assignee’s) authority to enter into such underwriting agreement and to sell, and its ownership of, the securities being
registered on its behalf, its intended method of distribution and any other representation required by law.

 

    	 	8	 

     

    

 

Notwithstanding any
other provision of this Section 2.1, if the underwriters, in good faith, advise the Initiating Holders in writing that marketing
factors require a limitation on the number of Registrable Securities to be underwritten, the number of Registrable Securities and
Other Shares that may be so included shall be allocated as follows: (i) first, among Initiating Holders requesting to include Registrable
Securities in such Underwritten Takedown based on the pro rata percentage of Registrable Securities requested by such Initiating
Holders to be included in such Underwritten Takedown (determined based on the aggregate number of Registrable Securities requested
to be included in such Underwritten Takedown by each such Initiating Holder); (ii) second, among all other Holders requesting to
include Registrable Securities in such Underwritten Takedown based on the pro rata percentage of Registrable Securities
requested by such Holders to be included in such Underwritten Takedown (determined based on the aggregate number of Registrable
Securities requested to be included in such Underwritten Takedown by each such Holder); (iii) third, to any holder of Preferred
Stock Conversion Shares that has requested the inclusion of its Preferred Stock Conversion Shares pursuant to the Preferred Stock
Subscription Agreement; (iv) fourth, to the Company, which the Company may allocate, at its discretion, for its own account, or
for the account of other Holders or employees of the Company, and (v) fifth, to any Other Selling Stockholders requesting to include
Other Shares in such registration statement.

 

If a person who has
requested inclusion in such Underwritten Takedown as provided above does not agree to the terms of any such underwriting, such
person shall be excluded therefrom by written notice to the Company, the underwriter or the Initiating Holders, and the securities
so excluded shall also be withdrawn from the Underwritten Takedown. If Registrable Securities are so withdrawn from the Underwritten
Takedown and if the number of shares to be included in such Underwritten Takedown was previously reduced as a result of marketing
factors pursuant to this Section 2.1(e), then the Company shall offer to all Holders who have retained rights to include
securities in the Underwritten Takedown the right to include additional Registrable Securities in the offering in an aggregate
amount equal to the number of shares so withdrawn, with such shares to be allocated among such Holders requesting additional inclusion,
as set forth above.

 

(f)          Deferral;
Suspension. Notwithstanding anything in this Agreement to the contrary, if the Company furnishes to the Holders a certificate
(the “Suspension Notice”) signed by an executive officer of the Company stating that, in the good faith judgment
of the Company, effecting a registration (whether by the filing of a Registration Statement or by taking any other action) or the
offering or disposition of Registrable Securities thereunder (including, for the avoidance of doubt, through an Underwritten Takedown)
should be postponed or suspended because such registration, offering or disposal would (1) materially impede, delay or interfere
with a pending material acquisition, corporate reorganization, or other similar transaction involving the Company; (2) require
premature disclosure of material non-public information that the Company has a bona fide business purpose for preserving as confidential;
or (3) render the Company unable to comply with requirements under the Securities Act or Exchange Act, then by delivery of the
Suspension Notice to the Holders, the Company may so postpone effecting a registration or require the Holders to refrain from offering
or disposing of Registrable Securities for a period of not more than thirty (30) days, and, provided further, that the Company
shall not suspend usage of a registration statement in this manner more than twice in any twelve (12) month period or at any time
within thirty (30) days of the end of the immediately preceding suspension period. The Company shall give written notice to the
Holders as promptly as practicable following the date that such suspension is no longer necessary.

 

    	 	9	 

     

    

 

2.2         Peninsula
Holder Underwritten Takedown. If the number of shares issued to the Peninsula Holder pursuant
to the terms of the Rollover Agreement to which it is a party exceeds 882,353 shares (the “Peninsula Threshold”),
then for a period of two years following the one hundred eighty (180)-day anniversary of the Closing, the Peninsula Holder shall
have the right to cause the Company to effect one (1) Underwritten Takedown (a “Peninsula Takedown”) (which,
for the avoidance of doubt, will be on whatever registration statement form is then available to the Company to serve as the Resale
Shelf Registration Statement, including a registration statement on Form S-1 to the extent that Form S-3 is not then available)
in which the Peninsula Holder shall have the right to include the Peninsula Holder’s Registrable Securities in excess of
the Peninsula Threshold in such Underwritten Takedown as a matter of priority over all other Holders and the Company. If the Company
receives a written request for a Peninsula Takedown, then, subject to Section 2.1(c)(ii) and (iii), the Company shall
provide the notices and take the actions required by Section 2.1(b)(i) and (ii) of this Agreement. Without the prior
written consent of the Peninsula Holder, no stockholder of the Company (other than the Peninsula Holder) may include securities
in an offering pursuant to a Peninsula Takedown. If the underwriters, in good faith, advise the Peninsula Holder in writing that
marketing factors require a limitation on the number of Registrable Securities to be underwritten, the number of Registrable Securities
that may be so included in the Peninsula Takedown shall be allocated as follows: (i) first, to the Peninsula Holder to include
Registrable Securities in such Underwritten Takedown in excess of the Peninsula Threshold; and (ii) second, to the Company, which
the Company may allocate, at its discretion, for its own account or, with the prior written consent of the Peninsula Holder, for
the account of other Holders who have requested to include their Registrable Securities in such offering; provided, that
if (A) on the date on which the Peninsula Holder provides a written request for an initial Peninsula Takedown the Peninsula Holder
beneficially owns at least 2,625,272 shares of Company Common Stock that were issued under its Rollover Agreement and (B) less
than fifty percent (50%) of the Registrable Securities of the Peninsula Holder requested to be registered in the Peninsula Takedown
are included in such initial Underwritten Takedown effected under this Section 2.2, then such Underwritten Takedown shall
not be considered a Peninsula Takedown for purposes of this Agreement; provided further that in no event shall the Company
(1) be required to effect a Peninsula Takedown within six (6) months after the closing date of any other Underwritten Takedown
effected under this Section 2.2, and (2) be required to effect more than two (2) Underwritten Takedowns under this Section
2.2. In connection with any Peninsula Takedown, Argand Investor and its Affiliates shall, at the Peninsula Holder’s written
request, sign a customary lockup agreement whereby Argand Investor and its Affiliates will agree to refrain from effecting any
Transfer of Company Common Stock or other securities of the Company until sixty (60) days after the conclusion of the Peninsula
Takedown. The Peninsula Holder shall have the right to terminate or withdraw its request for an Underwritten Takedown (and in such
case shall not be deemed to have exercised its right to have caused the Company to effect a Peninsula Takedown) at any time prior
to the effectiveness of such registration.

 

2.3         Company
Registration

 

(a)          Company
Registration/Underwritten Offering. If the Company shall determine to (1) register any of its securities either for its
own account or the account of a security holder or holders (or a combination of the foregoing) during a period in which a Resale
Shelf Registration Statement covering a Holder’s Registrable Securities is not then effective, other than: a registration
pursuant to Sections 2.1 or 2.2; a registration relating to the shares of Company Common Stock underlying the Public
Warrants; a registration relating solely to employee benefit plans, a registration relating to the offer and sale of non-convertible
debt securities, a registration relating to a corporate reorganization or other Rule 145 transaction; or a registration on
any registration form that does not permit secondary sales, or (2) effect an underwritten public offering of securities, either
for its own account or the account of a security holder or holders (or a combination of the foregoing), the Company will:

 

(i)          promptly
give written notice (in any event not later than twenty (20) days prior to the filing of the registration statement or preliminary
prospectus to which such offering relates) of the proposed registration or offering, as applicable, to all Holders; and

 

(ii)         include
in such registration or offering, as applicable, (and any related qualification under blue sky laws or other compliance), except
as set forth in Section 2.2(b) below, and in any underwriting involved therein, all of such Registrable Securities
as are specified in a written request or requests made by any Holder or Holders received by the Company within ten (10) days after
receipt of such written notice from the Company. Such written request may specify all or a part of a Holder’s Registrable
Securities.

 

    	 	10	 

     

    

 

(b)          Underwriting;
Cutback. If the registration or offering of which the Company gives notice is for an underwritten public offering, the
Company shall so advise the Holders (and include the names of the proposed underwriters) as a part of the written notice given
pursuant to Section 2.2(a)(i). All Holders proposing to distribute their securities through such underwriting shall
(together with the Company and the Other Selling Stockholders with registration rights to participate therein) enter into an underwriting
agreement in customary form with the representative of the underwriter or underwriters selected by the Company. No Holder (or its
permitted transferee or assignee under Section 2.11) shall be required to make any representations or warranties to, or
agreements with, the Company or the underwriters other than representations, warranties or agreements regarding such Holder’s
(or such transferee’s or assignee’s) authority to enter into such underwriting agreement and to sell, and its ownership
of, the securities being registered on its behalf, its intended method of distribution and any other representation required by
law.

 

Notwithstanding any
other provision of this Section 2.2, if the underwriters in good faith advise the Company and the Holders of Registrable
Securities participating in the offering in writing that marketing factors require a limitation on the number of shares to be underwritten,
the number of Registrable Securities to be included in the registration and underwriting shall be reduced, subject to the limitations
set forth below. The Company shall so advise all holders of securities requesting registration, and the number of shares entitled
to be included in the registration and underwriting shall be allocated (1) if the underwritten offering is for the Company’s
account, (m) first, to the Company; (n) second, to the Holders requesting to include Registrable Securities in such offering based
on the pro rata percentage of Registrable Securities requested to be included by such Holders; (o) third, to any holder
of Preferred Stock Conversion Shares that has requested the inclusion of its Preferred Stock Conversion Shares pursuant to the
Preferred Stock Subscription Agreement; and (iv) fourth, to the Other Selling Stockholders, if any, requesting to include Other
Shares in such underwritten offering and (2) if the underwritten offering is for the account of Other Selling Stockholders, then
(x) first, to the Other Selling Stockholders, (y) second, to the Holders
requesting to include Registrable Securities in such offering based on the pro rata percentage of Registrable Securities
requested to be included by such Holders; and (z)
third, to the Company.

 

If a person who has
requested inclusion in such registration as provided above does not agree to the terms of any such underwriting, such person shall
be excluded therefrom by written notice to the Company and the underwriter. Any Registrable Securities or Other Shares excluded
or withdrawn from such underwriting shall be withdrawn from such registration. Notwithstanding anything to the contrary, the Company
shall be responsible for the Registration Expenses prior to any such withdrawal.

 

(c)          Right
to Terminate Registration. The Company shall have the right to terminate or withdraw any registration initiated by it under
this Section 2.2 prior to the effectiveness of such registration whether or not any Holder has elected to include securities
in such registration.

 

2.4         Expenses
of Registration. All Registration Expenses incurred in connection with registrations pursuant
to this Section 2 shall be borne by the Company. All Selling Expenses relating to securities registered on behalf of
the Holders and the holders of any Other Shares shall be borne by the Holders and any holders of any Other Shares included in such
registration pro rata among each other on the basis of the number of Registrable Securities and Other Shares, respectively,
registered on their behalf.

 

2.5         Registration
Procedures. In the case of each registration of Registrable Securities effected by the
Company pursuant to Section 2, the Company will keep each Holder advised in writing as to the initiation of each registration
and as to the completion thereof. At its sole expense, the Company will:

 

    	 	11	 

     

    

 

(a)          Prepare
each registration statement, including all exhibits and financial statements required under the Securities Act to be filed therewith,
and before filing such registration statement, any prospectus or any amendments or supplements thereto, furnish to the Holders
of the Registrable Securities copies of all documents prepared to be filed, which documents shall be subject to the review of such
Holders and their respective counsel;

 

(b)          As
soon as reasonably practicable file with the Commission, the registration statement relating to the Registrable Securities, including
all exhibits and financial statements required by the Commission to be filed therewith, and use its reasonable best efforts to
cause such registration statement(s) to become effective under the Securities Act as soon as practicable;

 

(c)          Prepare
and file with the Commission such amendments, post-effective amendments and supplements to such registration statement and the
prospectus used in connection with such registration statement as may be requested by the Holders or any underwriter of Registrable
Securities or as may be necessary to keep such registration statement effective and to comply with the provisions of the Securities
Act with respect to the disposition of all securities covered by such registration statement;

 

(d)          Notify
the participating Holders of Registrable Securities, and confirm such notice in writing and provide copies of the relevant documents,
as soon as reasonably practicable after notice thereof is received by the Company (a) when the applicable registration statement
or any amendment thereto has been filed or becomes effective, and when the applicable prospectus or any amendment or supplement
to such prospectus has been filed, (b) of any written comments by the Commission or any request by the Commission or any other
federal or state governmental authority for amendments or supplements to such registration statement, prospectus or for additional
information (whether before or after the effective date of the registration statement), (c) of the issuance by the Commission
of any stop order suspending the effectiveness of such registration statement or any order by the Commission or any other regulatory
authority preventing or suspending the use of any preliminary or final prospectus or the initiation or threatening of any proceedings
for such purposes and (d) of the receipt by the Company of any notification with respect to the suspension of any Registrable
Securities for offering or sale in any jurisdiction or the initiation or threatening of any proceeding for such purpose;

 

(e)          Furnish
such number of prospectuses, including any preliminary prospectuses, and other documents incident thereto, including any amendment
of or supplement to the prospectus, as a Holder (or its counsel) from time to time may reasonably request;

 

(f)          Register
and qualify the securities covered by such registration statement under such other securities or Blue Sky laws of such jurisdictions
as shall be reasonably requested by the Holders; provided, that the Company shall not be required in connection therewith
or as a condition thereto to qualify to do business or to file a general consent to service of process in any such states or jurisdictions
where it would not otherwise be required to qualify or when it is not then otherwise subject to service of process;

 

    	 	12	 

     

    

 

(g)          Notify
each seller of Registrable Securities covered by such registration statement at any time when a prospectus relating thereto 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 an untrue statement of a material fact or omits to state a material fact
required to be stated therein or necessary to make the statements therein not misleading or incomplete in the light of the circumstances
under which they were made, and following such notification promptly prepare and file a post-effective amendment to such registration
statement or a supplement to the related prospectus or any document incorporated therein by reference, and file any other required
document that would be incorporated by reference into such registration statement and prospectus, so that such registration statement
does not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary
to make the statements therein not misleading, and that such prospectus does not contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading, and, in the case of a post-effective amendment to a registration statement,
use reasonable best efforts to cause it to be declared effective as promptly as is reasonably practicable, and give to the Holders
listed as selling security holders in such prospectus a written notice of such amendment or supplement, and, upon receipt of such
notice, each such Holder agrees not to sell any Registrable Securities pursuant to such registration statement until such Holder’s
receipt of copies of the supplemented or amended prospectus or until it receives further written notice from the Company that such
sales may re-commence;

 

(h)          Use
its reasonable best efforts to prevent, or obtain the withdrawal of, any order suspending the effectiveness of any registration
statement (and promptly notify in writing each Holder covered by such registration statement of the withdrawal of any such order);

 

(i)          Provide
a transfer agent or warrant agent, as applicable, and registrar for all Registrable Securities registered pursuant to such registration
statement and a CUSIP number for all such Registrable Securities, in each case not later than the effective date of such registration;

 

(j)          if
requested, cooperate with the selling Holders of Registrable Securities to facilitate the timely preparation and delivery of certificates
or establishment of book entry notations representing Registrable Securities to be sold and not bearing any restrictive legends,
including without limitation, procuring and delivering any opinions of counsel, certificates or agreements as may be necessary
to cause such Registrable Securities to be so delivered;

 

(k)          Cause
all such Registrable Securities registered hereunder to be listed on each securities exchange or automated quotation system on
which similar securities issued by the Company are then listed;

 

(l)          In
connection with any underwritten offering pursuant to a registration statement filed pursuant to Section 2.1 or 2.2,
enter into and perform its obligations under an underwriting agreement in form reasonably necessary to effect the offer and sale
of the Registrable Securities subject to such underwriting, provided, that such underwriting agreement contains reasonable
and customary provisions;

 

(m)          Furnish
to each Holder of Registrable Securities included in such registration statement a signed counterpart, addressed to such Holder,
of (1) any opinion of counsel to the Company delivered to any underwriter dated the effective date of the registration statement
or, in the event of an underwritten offering, the date of the closing under the applicable underwriting agreement, in customary
form, scope, and substance, at a minimum to the effect that the registration statement has been declared effective and that no
stop order is in effect, which counsel and opinions shall be reasonably satisfactory to the Holders and their respective counsel
and (2) any comfort letter from the Company’s independent public accountants delivered to any underwriter in customary
form and covering such matters of the type customarily covered by comfort letters as the managing underwriter or underwriters reasonably
request. In the event no legal opinion is delivered to any underwriter, the Company shall furnish to each Holder of Registrable
Securities included in such registration statement, at any time that such Holder elects to use a prospectus, an opinion of counsel
to the Company to the effect that the registration statement containing such prospectus has been declared effective and that no
stop order is in effect and any other matters as the Holders or underwriter may reasonably request and as are customarily included;

 

    	 	13	 

     

    

 

(n)          Promptly
identify to the selling Holders, any underwriter(s) participating in any disposition pursuant to such registration statement, and
any attorney or accountant or other agent retained by any such underwriter or selected by the selling Holders, make available for
inspection by the seller Holders all financial and other records, pertinent corporate documents, and properties of the Company,
and cause the Company’s officers, directors, employees, and independent accountants to supply all information reasonably
requested by any such seller, underwriter, attorney, accountant, or agent, in each case, as necessary or advisable to verify the
accuracy of the information in such registration statement and to conduct appropriate due diligence in connection therewith;

 

(o)          Fully
cooperate, and cause each of its principal executive officer, principal financial officer, principal accounting officer, and all
other officers and members of the management to fully cooperate in any offering of Registrable Securities hereunder, which cooperation
shall include, without limitation, assisting with the preparation of any registration statement or amendment thereto with respect
to such offering and all other offering materials and related documents, and participation in meetings with underwriters, attorneys,
accountants and potential stockholders;

 

(p)          Otherwise
use its reasonable best efforts to comply with all applicable rules and regulations of the Commission and make available to its
stockholders an earnings statement (in a form that satisfies the provisions of Section 11(a) of the Securities Act and Rule 158
under the Securities Act or any successor rule thereto) no later than thirty (30) days after the end of the 12-month period beginning
with the first day of the Company's first full fiscal quarter after the effective date of such registration statement, which earnings
statement shall cover said 12-month period, and which requirement will be deemed to be satisfied if the Company timely files complete
and accurate information on Forms 10-K, 10-Q and 8-K under the Exchange Act and otherwise complies with Rule 158 under the Securities
Act or any successor rule thereto; 

 

(q)          Cooperate
with each Holder and each underwriter or agent, if any, participating in the disposition of such Registrable Securities and their
respective counsel in connection with any filings required to be made with the Financial Industry Regulatory Authority, Inc. (“FINRA”),
and use its reasonable best efforts to make or cause to be made any filings required to be made by an issuer with FINRA in connection
with the filing of any registration statement;

 

(r)          In
the event of any underwritten public offering of Registrable Securities, cause senior executive officers of the Company to participate
in customary “road show” presentations that may be reasonably requested by the managing underwriter in any such underwritten
offering and otherwise to facilitate, cooperate with, and participate in each proposed offering contemplated herein and customary
selling efforts related thereto;

 

(s)          Take
all reasonable action to ensure that any “free writing prospectus” (as defined in the Securities Act) utilized in connection
with any registration covered by Section 2.1 complies in all material respects with the Securities Act, is
filed in accordance with the Securities Act to the extent required thereby, is retained in accordance with the Securities Act to
the extent required thereby and, when taken together with the related prospectus, will not contain any untrue statement of a material
fact or omit to state a material fact necessary to make the statements therein, in the light of the circumstances under which they
were made, not misleading; and

 

(t)          Take
all such other reasonable actions as are necessary or advisable in order to expedite or facilitate the disposition of such Registrable
Securities.

 

    	 	14	 

     

    

 

2.6         Price
and Underwriting Discounts. In the case of an underwritten offering requested by Holders
pursuant to Section 2.1, the managing underwriters (which shall be reasonably acceptable to the Company), size, manner of
sale, plan of distribution, size, manner of sale, plan of distribution, price, underwriting discount and other financial terms
of the related underwriting agreement for the Registrable Securities shall be determined by either (i) a majority-in-interest of
the Holders whose Registrable Securities are being offered in such offering (the “Majority Holders”); or (ii)
such other means as is determined by the Majority Holders, in their sole discretion. In the case of a Peninsula Takedown , the
managing underwriters (which shall be reasonably acceptable to the Company), size, manner of sale, plan of distribution, price,
underwriting discount and other financial terms of the related underwriting agreement shall be determined by the Peninsula Holder.
In the case of any Underwritten Offering pursuant to Section 2.3, such price, discount and other terms shall be determined
by the Company, subject to the right of the Holders to withdraw their request to participate in the registration pursuant to Section 2.3
after being advised of such price, discount and other terms.

 

2.7         Indemnification

 

(a)          To
the extent permitted by law, the Company will indemnify and hold harmless each Holder, and each shareholder, member, limited or
general partner thereof, each shareholder, member, limited or general partner of each such shareholder, member, limited or general
partner, each of their respective Affiliates, officers, directors, shareholders, employees, advisors, and agents and each Person
who controls (within the meaning of Section 15 of the Securities Act) such Persons and each of their respective Representatives,
and each underwriter, if any, and each person or entity who controls within the meaning of Section 15 of the Securities Act
any underwriter, against all expenses, claims, judgments, suits, costs, penalties, losses, damages and liabilities (or actions,
proceedings or settlements in respect thereof) arising out of or based on: (i) any untrue statement (or alleged untrue statement)
of a material fact contained or incorporated by reference in any prospectus, offering circular or other document (including any
related registration statement, notification or the like) incident to any such registration, qualification or compliance, (ii) any
omission (or alleged omission) to state therein a material fact required to be stated therein or necessary to make the statements
therein not misleading, or (iii) any violation (or alleged violation) by the Company of the Securities Act, any state securities
laws or any rule or regulation thereunder applicable to the Company and relating to action or inaction required of the Company
in connection with any offering covered by such registration, qualification or compliance, and the Company will reimburse each
Holder, and each shareholder, member, limited or general partner thereof, each shareholder, member, limited or general partner
of each such shareholder, member, limited or general partner, each of their respective Affiliates, officers, directors, shareholders,
employees, advisors, and agents and each Person who controls such persons and each of their respective Representatives, and each
underwriter, if any, and each person or entity who controls any underwriter, for any legal and any other expenses reasonably incurred
in connection with investigating and defending or settling any such claim, judgment, suit, penalty, loss, damage, liability or
action; provided that the Company will not be liable in any such case to the extent that any such claim, judgment, suit,
penalty loss, damage, liability, or action arises out of or is based on any untrue statement or omission based upon written information
furnished to the Company by such Holder, any of such Holder’s Representatives, any person or entity controlling such Holder,
such underwriter or any person or entity who controls any such underwriter, and stated to be specifically for use therein; provided,
further that, the indemnity agreement contained in this Section 2.6(a) shall not apply to amounts paid in settlement
of any such loss, claim, damage, liability or action if such settlement is effected without the consent of the Company (which consent
shall not be unreasonably withheld). This indemnity shall be in addition to any liability the Company may otherwise have. Such
indemnity shall remain in full force and effect regardless of any investigation made by or on behalf of such Holder or any indemnified
party and shall survive the transfer of such securities by such Holder.

 

    	 	15	 

     

    

 

(b)          To
the extent permitted by law, each selling Holder, severally and not jointly, will, if Registrable Securities held by such Holder
are included in the securities as to which such registration, qualification or compliance is being effected, indemnify and hold
harmless the Company, each of its directors, officers, employees, partners, legal counsel and accountants and each underwriter,
if any, of the Company’s securities covered by such a registration statement, each person or entity who controls the Company
or such underwriter within the meaning of Section 15 of the Securities Act, each other such Holder, and each of their officers,
directors and partners, and each person or entity controlling each other such Holder, and each of their respective Representatives,
against all claims, judgments, penalties losses, damages and liabilities (or actions in respect thereof) arising out of or based
on: (i) any untrue statement (or alleged untrue statement) of a material fact contained or incorporated by reference in any
prospectus, offering circular or other document (including any related registration statement, notification, or the like) incident
to any such registration, qualification or compliance made in reliance upon and in conformity with information furnished in writing
by or on behalf of such selling Holder expressly for use in connection with such registration, (ii) any omission to state
therein a material fact required to be stated therein or necessary to make the statements therein not misleading, in each case
made in reliance upon and in conformity with information furnished in writing by or on behalf of such selling Holder expressly
for use in connection with such registration, or (iii) any violation (or alleged violation) by the Company of the Securities Act,
any state securities laws or any rule or regulation thereunder applicable to the Holder and relating to action or inaction required
of the Holder in connection with any offering covered by such registration, qualification or compliance, and will reimburse the
Company and such Holders, directors, officers, partners, legal counsel and accountants, persons, underwriters, or control persons
for any legal or any other expenses reasonably incurred in connection with investigating or defending any such claim, loss, damage,
liability or action, in each case to the extent, but only to the extent, that such untrue statement or omission (i) is made in
such registration statement, prospectus, offering circular or other document in reliance upon and in conformity with written information
furnished to the Company by such Holder and stated to be specifically for use therein and (ii) has not been corrected in a subsequent
writing prior to or concurrently with the sale of the Registrable Securities to the person asserting the claim; provided,
however, that the obligations of such Holder hereunder shall not apply to amounts paid in settlement of any such claims,
losses, damages or liabilities (or actions in respect thereof) if such settlement is effected without the consent of such Holder
(which consent shall not be unreasonably withheld); and provided that in no event shall any indemnity under this Section 2.7
exceed the net proceeds from the offering received by such Holder, except in the case of fraud or willful misconduct by such Holder.

 

(c)          Each
party entitled to indemnification under this Section 2.7 (the “Indemnified Party”) shall (i) give
notice to the party required to provide indemnification (the “Indemnifying Party”) promptly after such Indemnified
Party has actual knowledge of any claim as to which indemnity may be sought  (provided, that any delay or failure
to so notify the indemnifying party shall relieve the Indemnifying Party of its obligations hereunder only to the extent, if at
all, that it is actually and materially prejudiced by reason of such delay or failure), and (ii) permit the Indemnifying Party
to assume the defense of such claim or any litigation resulting therefrom; provided that counsel for the Indemnifying Party,
who shall conduct the defense of such claim or any litigation resulting therefrom, shall be approved by the Indemnified Party (whose
approval shall not be unreasonably withheld), and the Indemnified Party may participate in such defense at such party’s expense
unless (w) the Indemnifying Party has agreed in writing to pay such fees or expenses, (x) the Indemnifying Party shall
have failed to assume the defense of such claim within a reasonable time after receipt of notice of such claim from the Indemnified
Party hereunder and employ counsel reasonably satisfactory to the Indemnified Party, (y) the Indemnified Party has reasonably
concluded (based upon advice of its counsel) that there may be legal defenses available to it or other indemnified parties that
are different from or in addition to those available to the Indemnifying Party, or (z) in the reasonable judgment of any such
person (based upon advice of its counsel) a conflict of interest may exist between such person and the Indemnifying Party with
respect to such claims (in which case, if the person notifies the Indemnifying Party in writing that such Person elects to employ
separate counsel at the expense of the Indemnifying Party, the Indemnifying Party shall not have the right to assume the defense
of such claim on behalf of such person). No Indemnifying Party, in the defense of any such claim or litigation, shall, except with
the consent of each Indemnified Party, consent to entry of any judgment or enter into any settlement that 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. Each Indemnified Party shall furnish such information regarding itself or the claim in question
as an Indemnifying Party may reasonably request in writing and as shall be reasonably required in connection with defense of such
claim and litigation resulting therefrom.

 

    	 	16	 

     

    

 

(d)          If
the indemnification provided for in this Section 2.7 is held by a court of competent jurisdiction to be unavailable
to an Indemnified Party with respect to any loss, liability, claim, damage, or expense referred to herein, then the Indemnifying
Party, in lieu of indemnifying such Indemnified Party hereunder, shall contribute to the amount paid or payable by such Indemnified
Party as a result of such loss, liability, claim, damage, or expense in such proportion as is appropriate to reflect the relative
fault of the Indemnifying Party on the one hand and of the Indemnified Party on the other in connection with the statements or
omissions that resulted in such loss, liability, claim, damage, or expense as well as any other relevant equitable considerations.
The relative fault of the Indemnifying Party and of the Indemnified Party shall be determined by reference to, among other things,
whether the untrue or alleged untrue statement of a material fact or the omission to state a material fact relates to information
supplied by the Indemnifying Party or by the Indemnified Party and the parties’ relative intent, knowledge, access to information,
and opportunity to correct or prevent such statement or omission. No person or entity will be required under this Section 2.7(d)
to contribute any amount in excess of the net proceeds from the offering received by such person or entity, except in the case
of fraud or willful misconduct by such person or entity. No person or entity guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the Securities Act) will be entitled to contribution from any person or entity who was not guilty
of such fraudulent misrepresentation.

 

The obligations of
the Company and Holders under this Section 2.7 shall survive the completion of any offering of Registrable Securities
in a registration under this Section 2.7 and otherwise shall survive the termination of this Agreement until the expiration
of the applicable period of the statute of limitations.

 

2.8         Information
by Holder. Each Holder of Registrable Securities shall furnish to the Company such information
regarding such Holder and the distribution proposed by such Holder as the Company may reasonably request in writing and as shall
be reasonably required in connection with any registration, qualification, or compliance referred to in this Section 2.

 

2.9         Rule 144
Reporting. With a view to making available the benefits of certain rules and regulations
of the Commission that may permit the sale of the Restricted Securities to the public without registration, the Company agrees
to:

 

(a)          Make
and keep adequate current public information with respect to the Company available in accordance with Rule 144 under the Securities
Act;

 

(b)          File
with the Commission in a timely manner all reports and other documents required of the Company under the Securities Act and the
Exchange Act; and

 

    	 	17	 

     

    

 

(c)          So
long as a Holder owns any Restricted Securities, furnish to the Holder forthwith upon written request a written statement by the
Company as to its compliance with the reporting requirements of Rule 144 and of the Securities Act and the Exchange Act, or
that it qualifies as registrant whose securities may be resold pursuant to Form S-3 (at any time after the Company so qualifies),
a copy of the most recent annual or quarterly report of the Company, and such other reports and documents so filed as a Holder
may reasonably request in availing itself of any rule or regulation of the Commission allowing a Holder to sell any such securities
without registration. The Company further covenants that it shall take such further action as any Holder may reasonably request
to enable such Holder to sell from time to time shares of Company Common Stock held by such Holder without registration under the
Securities Act within the limitation of the exemptions provided by Rule 144, including providing any legal opinions and cooperating
with the Holders to cause the transfer agent to remove any restrictive legend on certificates evidencing Registrable Securities).
This Section 2.9 shall survive the termination of this Agreement so long as any Holder continues to hold Registrable Securities.

 

2.10       No
Inconsistent Agreements.  The Company has not entered, as of the date hereof, nor
shall the Company, on or after the date of this Agreement, enter into any agreement with respect to its securities, that would
have the effect of impairing the rights granted to the Holders of Registrable Securities or otherwise conflict with the provisions
hereof. 

 

2.11       Transfer
or Assignment of Rights. 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. The rights granted to a Holder by the Company
under this Section 2 may be transferred or assigned (but only with all related obligations) by a Holder only to
a transferee of Registrable Securities that is a transferee or assignee of not less than 10,000 Registrable Securities (as presently
constituted and subject to subsequent adjustments for share splits, share dividends, reverse share splits and the like); provided,
that (x) such transfer or assignment of Registrable Securities is effected in accordance with applicable securities laws,
(y) the Company is, within a reasonable time after such transfer, furnished with written notice of the name and address of such
transferee and the Registrable Securities with respect to which such rights are being transferred and (z) such transferee agrees
in a written instrument delivered to the Company to be bound by and subject to the terms and conditions of this Agreement.

 

SECTION
3

Lock-up

 

3.1         Initial
Investor Lock-up

 

(a)          Each
Initial Investor agrees not to Transfer a number of shares of Company Common Stock equal to the number of Class A Common Stock
issued upon conversion of such Initial Investor’s Founder Shares until the earlier of (A) one year after the Closing or (B)
subsequent to the Closing, (x) if the last sale price of the Company Common Stock equals or exceeds $12.00 per share (as adjusted
for stock splits, stock dividends, reorganizations, recapitalizations and the like) for any 20 trading days within any 30-trading
day period commencing at least 150 days after the Closing or (y) following the Closing, the date on which the Company completes
a liquidation, merger, capital stock exchange, reorganization or other similar transaction that results in all of the Company’s
stockholders having the right to exchange their shares of Company Common Stock for cash, securities or other property.

 

(b)          Each
Initial Investor agrees that it, he or shall not Transfer any Private Placement Warrants (or shares of Company Common Stock issued
or issuable upon the exercise of the Private Placement Warrants) until 30 days after the Closing.

 

    	 	18	 

     

    

 

3.2         CPH
Management Lock-up.  Each CPH Management Holder agrees not to Transfer any shares of Company
Common Stock acquired by such CPH Management Holder in connection with the Business Combination for a period commencing on the
date of Closing and ending on the date that is (a) the first anniversary of the Closing with respect to one-third (1/3) of such
CPH Management Holder’s Registrable Securities held as of the date of Closing; (b) the second anniversary of the Closing
with respect to one-third (1/3) of such CPH Management Holder’s Registrable Securities held as of the date of Closing; and
(c) the third anniversary of the Closing with respect to one-third (1/3) of such CPH Management Holder’s Registrable Securities
held as of the date of Closing. For the avoidance of doubt, the exercise of any stock option by any CPH Management Holder shall
in no way modify or extend the dates set forth in clauses (a), (b) and (c) of the previous sentence. 

 

3.3         Non-Management
CPH Lock-up. Each Non-Management CPH Holder agrees not to Transfer any shares of Company
Common Stock acquired by such Non-Management CPH Holder in connection with the Business Combination for a period commencing on
the date of Closing and ending on the date that is one hundred and eighty (180) days after the Closing. 

 

3.4         Argand
Investor Lock-up. The Argand Investor agrees not to Transfer any shares of Company Common
Stock acquired by the Argand Investor in exchange for the Argand PIPE Shares pursuant to the Merger Agreement for a period commencing
on the date of Closing and ending on (a) if the number of shares issued to the Peninsula Holder pursuant to the terms of the Rollover
Agreement to which it is a party does not exceed the Peninsula Threshold, the date that is one hundred and eighty (180) days after
the Closing, or (b) if the number of shares issued to the Peninsula Holder pursuant to the terms of the Rollover Agreement to which
it is a party exceeds the Peninsula Threshold, the date that is one year after the Closing.

 

3.5         Permitted
Transfers. Notwithstanding the provisions set forth in Sections 3.1, 3.2, 3.3 and 3.4,
nothing in this Agreement shall prohibit Transfers with the prior written consent of the Board (with any director who has been
designated to serve on the Board by or who is an Affiliate of the requesting party abstaining from such vote) or Transfers (a)
to the Company’s officers or directors, any Affiliate or family member of any of the Company’s officers or directors
or any Affiliate of the Holder transferring such securities or to any member(s) of such Holder’s family or any of their Affiliates
(including any investment fund of which the Holder or its Affiliate serves as the general partner, managing member or discretionary
manager or advisor); (b) in the case of an individual, as a gift to such person’s immediate family or to a trust, the beneficiary
of which is a member of such person’s immediate family, an Affiliate of such person or to a charitable organization; (c)
in the case of an individual, by virtue of laws of descent and distribution upon death of such person; (d) in the case of an individual,
pursuant to a qualified domestic relations order; (e) by virtue of the laws of the State of Delaware or the organizational documents
of the Holder transferring such securities upon dissolution of such Holder; (f) pursuant to an order of a court, regulatory agency
or other governmental authority; (g) solely to tender into a tender or exchange offer for a majority of the Company’s voting
securities commenced by a third party; or (h) in the event that the Company consummates a liquidation, merger, capital stock exchange
or other similar transaction that results in all of the Company’s stockholders having the right to exchange their shares
of Company Common Stock for cash, securities or other property; provided, however, that in the case of clauses (a) through (e),
these permitted transferees must enter into a written agreement with the Company agreeing to be bound by the transfer restrictions
herein.

 

3.6         Removal
of Legends. If any shares of Company Common Stock are certificated, upon the request of
a holder thereof following the expiration of the restrictions pursuant to Sections 3.1, 3.2, 3.3 or 3.4
(as applicable), the holder thereof shall be entitled to promptly receive from the Company new certificates for a like number of
shares of Company Common Stock not bearing any legend with respect to transfer restrictions pursuant to this Agreement.

 

    	 	19	 

     

    

 

SECTION
4

Board
representation

 

4.1         Initial
Director Designees

 

(a)          For
so long as the Peninsula Holder has the right to nominate members to the Board pursuant to Section 4.2, the Company
shall, to the fullest extent permitted by applicable law, cause the Board (whether acting through a nominating committee of the
Board or otherwise) to (A) nominate the Peninsula Nominees(s) and include the Peninsula Nominee(s) in any slate of nominees recommended
to the Company’s stockholders for election to the Board and include such Peninsula Nominee(s) in the Company’s preliminary
and definitive proxy statements filed with the Commission for any applicable annual meeting of stockholders at which stockholders
of the Company will vote on the election of directors to the Board (or any consent in lieu of a meeting), (B) recommend that
the Company’s stockholders vote in favor of the Peninsula Nominee(s) or Peninsula Director(s), as applicable, in all subsequent
stockholder meetings at which such Peninsula Nominee(s) or Peninsula Director(s), as applicable, stand for election or reelection
to the Board, and (C) support the Peninsula Nominee(s) or Peninsula Director(s), as applicable, in a manner no less favorably
than the manner in which the Company supports its other director nominees. For any meeting (or consent in lieu of meeting) of the
Company’s stockholders for the election of members of the Board, the Board (whether acting through a nominating committee
of the Board or otherwise) shall not nominate, in the aggregate, a number of nominees greater than the number of members of the
Board.

 

(b)          For
so long as the Peninsula Holder has the right to nominate members of the Board pursuant to Section 4.2 if
a vacancy on the Board is created as a result of a Peninsula Director’s death, disability, resignation (other than pursuant
to Section 4.5 or removal, then the Peninsula Holder shall have the right to designate by written notice to the
Company an individual (a “Peninsula Director Replacement”) to fill such vacancy, which individual shall meet
the conditions set forth in Section 4.4. The Company shall take all actions necessary to cause the Peninsula Director
Replacement to fill such resulting vacancy and such individual shall be deemed a Peninsula Director and a Peninsula Nominee. In
the event that the Peninsula Holder is entitled to appoint at least two (2) Peninsula Directors, the Board shall, at the written
request of the Peninsula Holder, appoint one (1) Peninsula Director to serve on any committee or committees of the Board, subject
to such Peninsula Director satisfying qualification and independence rules and regulations of the applicable stock exchange on
which the Company Common Stock is listed or the Commission as in effect at the time of determination with respect to any such committees.
Each Peninsula Director shall be entitled to receive compensation in his or her capacity as a director consistent with the compensation
received in such capacity by other non-employee members of the Board, including any fees and equity awards, and reimbursement
for reasonable out-of-pocket expenses incurred in attending meetings of the Board and its committees.

 

4.2         Director
Nomination Rights. To the extent permitted by applicable law and the rules of the principal stock
exchange or market on which the Company Common Stock is then traded or listed, commencing on the date of the Closing and ending
on the date that the Company’s obligations under this Section 4.2 terminate in accordance with this Section 4.2 (the
“Peninsula Board Right Period”): 

 

(a)          If
the Peninsula Holder’s beneficial ownership of Company Common Stock is within the Three Director Range, then the Company
shall cause the Board to nominate for election to the Board and shall recommend and support such nominations, in the manner provided
in Section 4.1(a), such number of Peninsula Nominees as is required to maintain the continuous service of three (3) Peninsula
Directors on the Board. The Company’s obligations under this Section 4.2(a) shall terminate on the first date on which
the Peninsula Holder’s beneficial ownership of issued and outstanding Company Common Stock is no longer within the Three
Director Range, following which the Peninsula Holder will cause one (1) Peninsula Director to resign as a member of the Board within
five (5) Business Days after receiving a written request from the Company.

 

    	 	20	 

     

    

 

(b)          
If the Peninsula Holder’s beneficial ownership of Company Common Stock is within Two Director
Range, then the Company shall cause the Board to nominate for election to the Board and shall recommend and support such nominations,
in the manner provided in Section 4.1(a), such number of Peninsula Nominees as is required to maintain the continuous service
of two (2) Peninsula Directors on the Board. The Company’s obligations under this Section 4.2(b) shall terminate automatically
on the first date on which the Peninsula Holder’s beneficial ownership of Company Common Stock is no longer within the Two
Director Range, following which the Peninsula Holder will cause one (1) Peninsula Director to resign as a member of the Board within
five (5) Business Days after receiving a written request from the Company.

 

(c)          
If the Peninsula Holder’s beneficial ownership of Company Common Stock is within One Director
Range, then the Company shall cause the Board to nominate for election to the Board and shall recommend and support such nomination,
in the manner provided in Section 4.1(a), such number of Peninsula Nominees as is required to maintain the continuous service
of one (1) Peninsula Director on the Board. The Company’s obligations under this Section 4.2(c) shall terminate on
the first date on which the Peninsula Holder’s beneficial ownership of Company Common Stock is no longer within the One Director
Range, following which the Peninsula Holder will cause one Peninsula Director to resign as a member of the Board within five (5)
Business Days after receiving a written request from the Company.

 

(d)          Any
Company Common Stock (or securities convertible, exercisable or exchangeable for shares of Company Common Stock ) acquired by the
Peninsula Holder or its Affiliates after the date of this Agreement shall be excluded from the number of shares of Company Common
Stock deemed beneficially owned by the Peninsula Holder for purposes of this Section 4.2. 

 

4.3         Exceptions.
Notwithstanding anything herein to the contrary, the Peninsula Holder shall not have any rights to nominate an individual for election
to the Board pursuant to this Section 4, and shall cause any such individuals previously so nominated by Peninsula
Holder to resign as a member of the Board within five (5) Business Days after receiving a written request from the Company
if the Peninsula Holder or any of its Affiliates has, at any time after the date of this Agreement, (a) an employee, member
or partner (other than any third party limited partner who is an investor in the Peninsula Holder) of the Peninsula Holder (excluding
any Portfolio Company) or any of its Affiliates (other than a Portfolio Company) that is a director or executive officer of a Competitor
of the Company (each such person, a “Competitor Director”), (b) a Portfolio Company that is a Competitor of
the Company or (c) if the Peninsula Board Right Period has ended; provided, that the foregoing restrictions and
requirements shall be applied in an equivalent manner to all other non-employee Board members (including any Board member that
is an officer, director, employee or manager of the Sponsor or its Affiliate); provided, further, that the Peninsula
Holder’s right to nominate individuals to the Board pursuant to this Article 4 shall not be impaired, restricted
or rescinded in any manner, if prior to or following the appointment of any Competitor Director, the Peninsula Holder obtains the
written consent of the Board (with the Peninsula Directors abstaining) (such consent not to be unreasonably withheld, conditioned
or delayed) to such Peninsula Holder employee, member or partner (other than any third party limited partner who is an investor
in Peninsula) serving as a Competitor Director.

 

    	 	21	 

     

    

 

4.4         Peninsula
Nominee Qualifications. As a condition to any Peninsula Nominee’s appointment or nomination
to the Board pursuant to this Agreement, such Peninsula Nominee shall agree to provide to the Company information required to be
or customarily disclosed for directors, candidates for directors and their Affiliates and Representatives in a proxy statement
or other filings under applicable law or stock exchange rules or listing standards, information in connection with assessing eligibility,
independence and other criteria applicable to directors or satisfying compliance and legal obligations and such other information
as reasonably requested by the Company from time to time with respect to such Peninsula Nominee and consistent with the requirements
and requests of the Company with respect to the other non-employee Board members; provided that in no event shall
such Peninsula Director’s relationship with the Peninsula Holder or its Affiliates (or any other actual or potential lack
of independence resulting therefrom), in and of itself, be considered to disqualify such Peninsula Director from being a member
of the Board pursuant to this Article 4. Each Peninsula Nominee shall, prior to being appointed or nominated,
submit to the Company a fully completed, true and accurate copy of Company’s standard director questionnaire and other reasonable
and customary director onboarding documentation (including an authorization form to conduct a background check) required by the
Company in connection with the appointment or nomination of any new Board member. Each Peninsula Nominee shall ensure, that, at
all times while serving as a member of the Board, he or she will (i) meet all director independence and other standards of
the Company, The Nasdaq Stock Market and the SEC and applicable provisions of the Exchange Act, including Rule 10A-3, and
(ii) be qualified to serve as a director under applicable law and comply with requirements applicable to directors thereunder.
In addition, while serving as a member of the Board, each Peninsula Nominee shall comply with all policies, procedures, processes,
codes, rules, standards and guidelines of the Company that have been adopted by the Board and which are applicable to all non-employee Board
members and which have been provided in advance to such Peninsula Nominee, and shall preserve the confidentiality of Company business
and information, including discussions or matters considered in meetings of the Board or Board committees to the extent not disclosed
publicly by the Company in a manner consistent with the confidentiality requirements applicable to all non-employee Board
members; provided that, subject to the Company, such Peninsula Director and the Peninsula Holder entering into
a customary and reasonable mutually acceptable confidentiality agreement (to the extent that such an agreement is requested of
other non-employee Board members with respect to sharing of such information with their Representatives and Affiliates), such Peninsula
Director shall be entitled to discuss Company business and matters discussed at meetings of the Board with other Representatives
of the Peninsula Holder and its Affiliates so long as such interaction is covered by such confidentiality agreement and does not,
based on the advice of counsel to the Company, jeopardize any attorney-client privilege

 

4.5         Director
Indemnification. The Company shall indemnify the Peninsula Directors on the same basis as all
other members of the Board and pursuant to indemnity agreements with terms that are no less favorable to the Peninsula Directors
than the indemnity agreements entered into between the Company and other members of the Board.

 

4.6         Board
Size. Prior to the expiration of the Peninsula Board Right Period, (i) the Company shall not
increase the size of the Board to more than a total of twelve director seats; provided that the Company may temporarily increase
the size of the Board to facilitate the retirement or resignation of any incumbent director and the replacement thereof with a
new director and (ii) the Company shall not decrease the size of the Board if such decrease would require the resignation of any
Peninsula Director, in each case, without the prior written consent of the Peninsula Holder.

 

SECTION
5

Miscellaneous

 

5.1         Termination
of Subsidiary Registration Rights Agreement. Upon the Closing and the effectiveness of
this Agreement, the registration rights agreement dated July 26, 2017 among Industrea, the Sponsor and the holders party thereto
shall terminate and be of no further force and effect.

 

    	 	22	 

     

    

 

5.2         Amendment.
Except as expressly provided herein, neither this Agreement nor any term hereof may be amended, waived, discharged or terminated
other than by a written instrument referencing this Agreement and signed by (i) the Company, and (ii) the Holders holding a majority
of the Registrable Securities provided, however, that if any amendment, waiver, discharge or termination operates
in a manner that treats any Holder different from other Holders, the consent of such Holder shall also be required for such amendment,
waiver, discharge or termination. Persons who become assignees or other transferees of Registrable Securities in accordance with
this Agreement after the date of this Agreement may become parties hereto, by executing a counterpart of this Agreement without
any amendment of this Agreement pursuant to this paragraph or any consent or approval of any other Holder. Any amendment, waiver,
discharge or termination effected in accordance with this paragraph shall be binding upon each Holder and each future holder of
all such securities of such Holder.

 

5.3         Notices.
All notices and other communications required or permitted hereunder shall be in writing and shall be mailed by registered or certified
mail, postage prepaid, sent by facsimile or otherwise delivered by hand, electronic mail, messenger or courier service at the following
addresses:

 

(a)          if
to an Investor, to such Investor’s address, facsimile number or electronic mail address as shown on Exhibits A, B and
C hereto, as may be updated in accordance with the provisions hereof.

 

(b)          if
to any Holder other than an Investor, to such address, facsimile number or electronic mail address as shown in the Company’s
records, or, until any such Holder so furnishes an address, facsimile number or electronic mail address to the Company, then to
the address, facsimile number or electronic mail address of the last holder of such shares for which the Company has contact information
in its records; or

 

(c)          If
to the Company or to Industrea:

 

Concrete Pumping Holdings, Inc.

6461 Downing Street

Denver, Colorado Attn: Chief Executive Officer

Facsimile: 303-289-4444

E-mail: bruceyoung@brundagebone.com

 

With a copy (which shall not constitute notice) to:

 

Winston & Strawn LLP

200 Park Avenue

New York, New York 10166

Attn: Dominick P. DeChiara

Facsimile: (212) 294-4700

Email: DDeChiara@winston.com

 

Each such notice or other communication
shall for all purposes of this Agreement be treated as effective or having been given (i) if delivered by hand, messenger or courier
service, when delivered (or if sent via a nationally-recognized overnight courier service, freight prepaid, specifying next-business-day
delivery, one business day after deposit with the courier), (ii) if sent via mail, at the earlier of its receipt or five (5) days
after the same has been deposited in a regularly-maintained receptacle for the deposit of the United States mail, addressed and
mailed as aforesaid, (iii) if sent via facsimile, upon confirmation of facsimile transfer, or (iv) if via email, on the date of
transmission.

 

    	 	23	 

     

    

 

5.4         Governing
Law. This Agreement shall be governed in all respects by the internal laws of the State
of Delaware as applied to agreements entered into among Delaware residents to be performed entirely within Delaware, without regard
to principles of conflicts of law.

 

5.5         Successors
and Assigns. The provisions of this Agreement shall inure to the benefit of, and be binding
upon, the successors, assigns, heirs, executors and administrators of the parties hereto.

 

5.6         Entire
Agreement. This Agreement, the Merger Agreement, and the exhibits and schedules hereto
and thereto constitute the full and entire understanding and agreement between the parties with regard to the subjects hereof.
No party hereto shall be liable or bound to any other party in any manner with regard to the subjects hereof or thereof by any
warranties, representations or covenants except as specifically set forth herein.

 

5.7         Delays
or Omissions. Except as expressly provided herein, no delay or omission to exercise any
right, power or remedy accruing to any party to this Agreement upon any breach or default of any other party under this Agreement
shall impair any such right, power or remedy of such non-defaulting party, nor shall it be construed to be a waiver of any such
breach or default, or an acquiescence therein, or of or in any similar breach or default thereafter occurring, nor shall any waiver
of any single breach or default be deemed a waiver of any other breach or default theretofore or thereafter occurring. Any waiver,
permit, consent or approval of any kind or character on the part of any party of any breach or default under this Agreement, or
any waiver on the part of any party of any provisions or conditions of this Agreement, must be in writing and shall be effective
only to the extent specifically set forth in such writing. All remedies, either under this Agreement or by law or otherwise afforded
to any party to this Agreement, shall be cumulative and not alternative.

 

5.8         Remedies.
Each holder of Registrable Securities, in addition to being entitled to exercise all rights granted by law, including recovery
of damages, shall be entitled to specific performance of its rights under this Agreement. The Company acknowledges that monetary
damages would not be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Agreement
and the Company hereby agrees to waive the defense in any action for specific performance that a remedy at law would be adequate.

 

5.9         Severability.
If any provision of this Agreement becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or
void, portions of such provision, or such provision in its entirety, to the extent necessary, shall be severed from this Agreement,
and such court will replace such illegal, void or unenforceable provision of this Agreement with a valid and enforceable provision
that will achieve, to the extent possible, the same economic, business and other purposes of the illegal, void or unenforceable
provision. The balance of this Agreement shall be enforceable in accordance with its terms.

 

5.10       Titles
and Subtitles. The titles and subtitles used in this Agreement are used for convenience
only and are not to be considered in construing or interpreting this Agreement. All references in this Agreement to sections, paragraphs
and exhibits shall, unless otherwise provided, refer to sections and paragraphs hereof and exhibits attached hereto.

 

5.11         Counterparts.
This Agreement may be executed in any number of counterparts, each of which shall be enforceable against the parties that execute
such counterparts, and all of which together shall constitute one instrument.

 

    	 	24	 

     

    

 

5.12       Telecopy
Execution and Delivery. A facsimile, telecopy, portable document format (“PDF”)
or other reproduction of this Agreement may be executed by one or more parties hereto and delivered by such party by facsimile,
PDF or any similar electronic transmission device pursuant to which the signature of or on behalf of such party can be seen. Such
execution and delivery shall be considered valid, binding and effective for all purposes. At the request of any party hereto, all
parties hereto agree to execute and deliver an original of this Agreement as well as any facsimile, telecopy or other reproduction
hereof.

 

5.13       Further
Assurances. Each party hereto agrees to execute and deliver, by the proper exercise of
its corporate, limited liability company, partnership or other powers, all such other and additional instruments and documents
and do all such other acts and things as may be necessary to more fully effectuate this Agreement.

 

5.14       Attorneys’
Fees. In the event that any suit or action is instituted to enforce any provision in this
Agreement, the prevailing party in such dispute shall be entitled to recover from the losing party such reasonable fees and expenses
of attorneys and accountants, which shall include, without limitation, all fees, costs and expenses of appeals.

 

5.15       Aggregation
of Stock. All securities held or acquired by affiliated entities of or persons shall be
aggregated together for purposes of determining the availability of any rights under this Agreement.

 

5.16       Jury
Trial Consent to Jurisdiction. Any judicial proceeding brought
with respect to this Agreement must be brought in any court of competent jurisdiction in the State of Delaware, and, by execution
and delivery of this Agreement, each party (a) accepts, generally and unconditionally, the exclusive jurisdiction of such courts
and any related appellate court, and irrevocably agrees to be bound by any judgment rendered thereby in connection with this Agreement;
and (b) irrevocably waives any objection it may now or hereafter have as to the venue of any such suit, action or proceeding brought
in such a court or that such court is an inconvenient forum. Nothing in this Section, however, shall affect the right of any party
to serve legal process in any other manner permitted by law or at equity. Each party agrees that a final judgment in any action
or proceeding so brought shall be conclusive and may be enforced by suit on the judgment or in any other manner provided by law
or at equity. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES, TO THE FULLEST EXTENT
PERMITTED BY LAW, ANY AND ALL RIGHT TO TRIAL BY JURY IN ANY LEGAL PROCEEDING (WHETHER SOUNDING IN CONTRACT, TORT OR OTHERWISE)
ARISING OUT OF OR RELATED TO THIS AGREEMENT.

 

5.17       No
Recourse. This Agreement may only be enforced against, and any claim or cause of action
based upon, arising out of, or related to this Agreement or the transactions contemplated hereby may only be brought against, the
entities that are expressly named as parties hereto and then only with respect to the specific obligations set forth herein with
respect to such party. Except to the extent a named party to this Agreement (and then only to the extent of the specific obligations
undertaken by such named party in this Agreement and not otherwise), no past, present or future director, officer, employee, incorporator,
member, partner, stockholder, Affiliate, agent, attorney, advisor or representative or Affiliate of any of the foregoing shall
have any liability (whether in contract, tort, equity or otherwise) for any one or more of the covenants, agreements or other obligations
or liabilities of any one or more of the Company, Industrea or any Investor or Holder under this Agreement (whether for indemnification
or otherwise) or of or for any claim based on, arising out of, or related to this Agreement or the transactions contemplated hereby.

 

[Signature pages follow]

 

    	 	25	 

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	CONCRETE PUMPING HOLDINGS, INC. 

 

	 	By:	/s/ Iain Humphries
	 	Name:	Iain Humphries
	 	Title:	Chief Financial Officer

 

	 	INDUSTREA ACQUISITION CORP.

 

	 	By:	/s/ Tariq Osman
	 	Name:	Tariq Osman
	 	Title:	Executive Vice President

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	INVESTORS:

 

	 	INDUSTREA ALEXANDRIA LLC

 

	 	By: 	/s/ Howard D. Morgan
	 	Name: 	Howard D. Morgan
	 	Title: 	Manager

 

	 	ARGAND PARTNERS FUND, LP

	 	By: Argand Partners Fund GP-LP, Ltd, its General Partner

	 	By: Argand Partners Fund GP-GP, Ltd, its General Partner

 

	 	By: 	/s/ Howard D. Morgan
	 	Name: 	Howard D. Morgan
	 	Title: 	Director

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ David A.B. Brown
	 	David A.B. Brown

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Thomas K. Armstrong, Jr.
	 	Thomas K. Armstrong, Jr.

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ David G. Hall
	 	David G. Hall

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Brian Hodges
	 	Brian Hodges

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Gerard F. Rooney
	 	Gerard F. Rooney

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Don M. Heinz Jr.
	 	Don M. Heinz Jr.

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ William L. Henshaw
	 	William L. Henshaw

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Iain Humphries
	 	Iain Humphries

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Robert Keith Joiner
	 	Robert Keith Joiner

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Jeffrey D. LaBounty
	 	Jeffrey D. LaBounty

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Terry McConnell
	 	Terry McConnell

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Scott C. Rochel
	 	Scott C. Rochel

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Timothy W. Schieck
	 	Timothy W. Schieck

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Robert Seals
	 	Robert Seals

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ David Anthony Faud
	 	David Anthony Faud
	 	 
	 	/s/ Peter Faud
	 	Peter Faud
	 	 
	 	/s/ Damian Shepherd
	 	Damian Shepherd
	 	 
	 	/s/ Brendan Murphy
	 	Brendan Murphy
	 	 
	 	/s/ Evelyn Murphy
	 	Evelyn Murphy

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Jeffrey Switzer
	 	Jeffrey Switzer

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ David S. Tinkle
	 	David S. Tinkle

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Randal A. Waterman
	 	Randal A. Waterman

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Gregg A. White
	 	Gregg A. White

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Bruce F. Young
	 	Bruce F. Young

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	BBCP INVESTORS, LLC

	 	By: PGP Investors, LLC, its Sole Member

	 	By: PGP Manager, LLC, its Manager

	 	By: PGP Advisors, LLC, its Manager

 

	 	By: 	/s/ M. Brent Stevens
	 	Name: 	M. Brent Stevens
	 	Title: 	Manager

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Robert Bruce Woods
	 	Robert Bruce Woods

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ William K. Wood
	 	William K. Wood

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Joel Silkett
	 	Joel Silkett

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Richard Hansen
	 	Richard Hansen

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ John G. Hudek
	 	John G. Hudek

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

IN WITNESS WHEREOF,
the parties have duly executed this Stockholders Agreement as of the date first written above.

 

	 	/s/ Dale C. Bone
	 	Dale C. Bone

 

[Signature Page to Stockholders Agreement]

 

     

     

    

 

EXHIBIT A

 

INITIAL INVESTORS

 

	Name	 	Address, Fax Number

or Email for Notices	 	Number of

 Shares
	 	 	 	 	 
	Industrea Alexandria LLC	 	[_]	 	[_]
	 	 	 	 	 
	David A.B. Brown	 	[_]	 	[_]
	 	 	 	 	 
	Thomas K. Armstrong, Jr.	 	[_]	 	[_]
	 	 	 	 	 
	David G. Hall	 	[_]	 	[_]
	 	 	 	 	 
	Brian Hodges	 	[_]	 	[_]
	 	 	 	 	 
	Gerard F. Rooney	 	[_]	 	[_]

 

    	 	A-1	 

     

    

 

EXHIBIT B

 

CPH MANAGEMENT HOLDERS

 

	Name	 	Address, Fax Number

or Email for Notices	 	Number of

Shares
	 	 	 	 	 
	David Anthony Faud	 	[_]	 	[_]
	 	 	 	 	 
	Peter Faud	 	[_]	 	[_]
	 	 	 	 	 
	Don M. Heinz Jr.	 	[_]	 	[_]
	 	 	 	 	 
	William L. Henshaw	 	[_]	 	[_]
	 	 	 	 	 
	Iain Humphries	 	[_]	 	[_]
	 	 	 	 	 
	Robert Keith Joiner	 	[_]	 	[_]
	 	 	 	 	 
	Jeffrey D. LaBounty	 	[_]	 	[_]
	 	 	 	 	 
	Terry McConnell	 	[_]	 	[_]
	 	 	 	 	 
	Brendan Murphy	 	[_]	 	[_]
	 	 	 	 	 
	Scott C. Rochel	 	[_]	 	[_]
	 	 	 	 	 
	Timothy W. Schieck	 	[_]	 	[_]
	 	 	 	 	 
	Robert Seals	 	[_]	 	[_]
	 	 	 	 	 
	Damien Shepherd	 	[_]	 	[_]
	 	 	 	 	 
	Jeffrey Switzer	 	[_]	 	[_]
	 	 	 	 	 
	Dave Tinkle	 	[_]	 	[_]
	 	 	 	 	 
	Randal A. Waterman	 	[_]	 	[_]
	 	 	 	 	 
	Gregg A. White	 	[_]	 	[_]
	 	 	 	 	 
	Bruce F. Young	 	[_]	 	[_]

 

    	 	B-1	 

     

    

 

EXHIBIT C

 

NON-MANAGEMENT CPH HOLDERS

 

	Name	 	Address, Fax Number

or Email for Notices	 	Number of

Shares
	 	 	 	 	 
	BBCP Investors, LLC	 	[_]	 	[_]
	 	 	 	 	 
	Robert Bruce Woods	 	[_]	 	[_]
	 	 	 	 	 
	William K. Wood	 	[_]	 	[_]
	 	 	 	 	 
	Joel Silkett	 	[_]	 	[_]
	 	 	 	 	 
	Richard Hansen	 	[_]	 	[_]
	 	 	 	 	 
	John G. Hudek	 	[_]	 	[_]
	 	 	 	 	 
	Dale C. Bone	 	[_]	 	[_]

 

    	 	C-1Exhibit 10.36 

 

Execution Version

 

CONCRETE
PUMPING HOLDINGS ACQUISITION CORP.

28 West 44th Street, Suite 501

New York, New York 10036

 

December 6, 2018

 

Nuveen Alternatives Advisors, LLC

730 Third Avenue

New York, New York 10017

Attention: Managing Director and General Counsel

 

Ladies and Gentlemen:

 

This agreement (this
“Letter Agreement”) is written in connection with the investment by Nuveen Alternatives Advisors, LLC and its
affiliates (the “Investor”) in Concrete Pumping Holdings Acquisition Corp., a Delaware corporation (the “Corporation”),
pursuant to that certain Subscription Agreement, dated as of September 7, 2018, by and among the Investor, the Corporation and
Industrea Acquisition Corp., a Delaware corporation (the “Subscription Agreement”). Capitalized terms used but
not otherwise defined herein shall have the meanings set forth in the Subscription Agreement. In connection with such investment,
the undersigned agree as follows:

 

		1.	Board Observer.

 

For so long as the
Investor beneficially owns an aggregate of 5.0% or more of the aggregate number of shares of the common stock, par value $0.0001
per share, of the Corporation, including the stock into which the Preferred Stock is convertible, and any securities into which
the common stock may be reclassified (the “Common Stock”), outstanding on a fully diluted, as-converted basis,
the Investor shall be entitled to designate one individual to serve as a non-voting observer (the “Board Observer”)
of the board of directors of the Corporation (the “Board of Directors”) to attend all meetings of the Board
of Directors of the Corporation (including any closed session) in a non-voting capacity, and in connection therewith, the Corporation
shall give such Board Observer copies of all notices, minutes, consents and other materials, financial or otherwise, which the
Corporation provides to its Board of Directors (including any closed session materials); provided, however, that the Corporation
reserves the right to exclude such Board Observer from access to any material or meeting or portion thereof if the Corporation
believes in good faith upon advice of counsel that such exclusion is reasonably necessary to preserve the attorney-client privilege,
to protect highly confidential information or for other similar reasons. The Board Observer shall execute a customary non-disclosure
agreement in a form provided by the Corporation with respect to information provided or otherwise made available to the Board Observer
in connection with its attendance at meetings of the Board of Directors. The Investor shall be responsible for all costs, expenses
and risks related to the designation and service of the Board Observer.

 

    	 	1	 

     

    

 

		2.	Subscription Rights.

 

(a)       The
Investor shall have the right to purchase equity securities that are issued by the Corporation in any capital raising transaction
(each an “Additional Issuance”) that occurs after the Closing Date to the extent necessary in order to maintain
the Investor’s then-existing pro rata ownership percentage in the Company on a fully diluted, as-converted basis (the “Additional
Shares”). For the avoidance of doubt, Additional Issuances shall not include: (i) issuances or grants of equity securities
(including, without limitation, options and restricted stock units) pursuant to any management incentive equity plan adopted by
the Company; (ii) issuances of equity securities by the Company to the seller(s) in consideration for an acquisition of any assets,
business or entity undertaken by the Company or any subsidiary of the Company; (iii) issuances of equity securities in connection
with any equity split or reverse equity split or equivalent action by the Company; and (iv) issuances of equity securities by the
Company in connection with a debt financing of the Company or any of its subsidiaries.

 

(b)       If
the Investor is entitled to purchase Additional Shares pursuant to Section 2(a) above, then the Corporation shall give,
by first class mail postage prepaid, addressed to the Investor at the address of the Investor as shown on the books of the Corporation,
at least fifteen (15) days prior written notice of the date when the Additional Issuance shall take place. For a period of ten
(10) Business Days (the “Exercise Period”) after the date on which notice regarding the Additional Issuance
is deemed to have been delivered to the Investor, the Investor shall have the right to purchase all or any part of the Additional
Shares on terms and conditions no less favorable than as are being offered to any other participant in the Additional Issuance.
In order to exercise its right hereunder, the Investor must deliver written notice to the Corporation within the Exercise Period.

 

		3.	General.

 

(a)       The
Corporation represents and warrants to the Investor that, as of the date hereof, (i) no series of equity securities of the Corporation
has been issued and is outstanding that ranks senior to or pari passu with the Preferred Stock in liquidation preference
and (ii) no borrowed money indebtedness has been incurred by the Corporation that ranks junior to the Term Loan and the ABL Facility.

 

(b)       The
terms of this Letter Agreement shall become effective upon the execution and delivery of this Letter Agreement by each of the parties
hereto. This Letter Agreement may not be modified or amended, unless expressly agreed to in writing by the Investor and the Corporation.
Nothing in this Letter Agreement shall be construed to limit your obligations under the Subscription Agreement or any agreement
related thereto. This Letter Agreement may be executed in any number of counterparts, any one of which need not contain the signatures
of more than one party, but all of such counterparts together shall constitute one agreement, and such counterparts that are delivered
by PDF or other electronic means shall be treated as originals for all purposes. This Letter Agreement shall be governed by, and
construed in accordance with, the laws of the state of Delaware, without regard to the principles of conflicts of laws that would
otherwise require the application of the law of any other state. The execution and delivery of this Letter Agreement by the Investor
constitutes the representation that (x) the Investor is authorized to execute this Letter Agreement and (y) the terms of this Letter
Agreement are binding upon, and in full force and effect against, the Investor.

 

[Remainder of page
intentionally left blank]

 

    	 	2	 

     

    

 

 

If the above correctly
reflects your understanding and agreement with respect to the foregoing matters, please so confirm by signing this Letter Agreement.

 

	 	Sincerely,
	 	 
	 	Concrete Pumping Holdings Acquisition Corp.
	 	 	 
	 	By:	/s/ Tariq Osman
	 	Name: 	Tariq Osman
	 	Title:   	President

 

Accepted and agreed as of the date first
above written:

 

Nuveen Alternatives Advisors, LLC,
on behalf of

one or more funds and accounts

  

	By: 	/s/ Derek Fricke	 
	Name:	Derek Fricke	 
	Title: 	Senior Director	 

 

[Signature Page to Side Letter]

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