Exhibit 10.4


 


REGISTRATION
RIGHTS AGREEMENT


 


THIS
REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of October 21, 2020, is made and entered into by
and among Yellowstone Acquisition Company, a Delaware corporation (the “Company”), BOC Yellowstone, LLC, a
Delaware limited liability company (the “Sponsor”), and the undersigned parties listed under Holder on the
signature pages hereto (each such party, together with the Sponsor and any person or entity who hereafter becomes a party to this
Agreement pursuant to Section 5.02 of this Agreement, a “Holder” and collectively the
“Holders”).


RECITALS


 


WHEREAS,
the Company and the Sponsor entered into that certain Securities Subscription Agreement, dated as of August 31, 2020, (the “Original
Subscription Agreement”), pursuant to which the Sponsor purchased an aggregate of 5,750,000 shares of the Company’s
Class B common stock, par value $0.001 per share (the “Founder Shares”). The Original Subscription Agreement
was amended and restated as of October 9, 2020 to reduce the number of Founder Shares issued to the Sponsor to equal 4,312,500
Founder Shares (the “Amended Subscription Agreement”). The Amended Subscription Agreement was amended and restated
as of October 21, 2020 to reduce the number of shares to 3,593,750 Founder Shares, of which 468,750 Founder Shares are subject
to forfeiture by the Sponsor if the underwriters do not fully exercise their over-allotment option (the “Subscription
Agreement”);


 


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


 


WHEREAS,
the Company and the Sponsor have entered into that certain Sponsor Warrants Purchase Agreement, dated as of October 9, 2020, which
was amended as of October 17, 2020, by that certain Amended and Restated Sponsor Warrants Purchase Agreement. The Amended and
Restated Sponsor Warrants Purchase Agreement was amended and restated by that certain Second Amended and Restated Sponsor Warrants
Purchase Agreement, dated as of October 21, 2020, pursuant to which the Sponsor agreed to purchase an aggregate of 7,500,000 warrants
(or up to 7,875,000 warrants if the over-allotment option in connection with the Company’s initial public offering is exercised
in full) (the “Private Placement Warrants”), in a private placement transaction occurring simultaneously with
the closing of the Company’s initial public offering;


 


WHEREAS,
the Company and the Holders desire to enter into this Agreement, pursuant to which the Company shall grant the Holders certain
registration rights with respect to certain securities of the Company, as set forth in this Agreement.


 


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


 






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ARTICLE
I.

DEFINITIONS


 


 


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


 


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


 


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


 


“Board”
shall mean the Board of Directors of the Company.


 


“Business
Combination” shall mean any merger, capital stock exchange, asset acquisition, stock purchase, reorganization or other
similar business combination, involving the Company and one or more businesses.


 


“Commission”
shall mean the Securities and Exchange Commission.


 


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


 


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


 


“Demand
Registration” shall have the meaning given in subsection 2.01(a).


 


“Demanding
Holder” shall have the meaning given in subsection 2.01(a).


 


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


 


“Form S-1”
shall have the meaning given in subsection 2.01(a).


 


“Form S-3”
shall have the meaning given in subsection 2.03.


 


“Founder
Shares” shall have the meaning given in the Recitals hereto and shall be deemed to include the shares of Common Stock
issuable upon conversion thereof. 


 


“Founder
Shares Lock-up Period” shall mean, with respect to the Founder Shares, the period ending on the earlier of (A) one
(1) year after the completion of the Company’s initial Business Combination or (B) subsequent to the Business Combination,
(x) if the last sale price of the Common Stock equals or exceeds $12.00 per share (as adjusted for stock splits, stock dividends,
reorganizations, recapitalizations and the like) for any twenty (20) trading days within any thirty (30)-trading day period commencing
at least one hundred fifty (150) days after the Company’s initial Business Combination or (y) 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 Common Stock for cash, securities or other property.


 




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


 


“Insider
Letter” shall mean that certain letter agreement, dated as of October 21, 2020, by and among the Company, the Sponsor
and each of the Company’s officers, directors and director nominees.


 


“Maximum
Number of Securities” shall have the meaning given in subsection 2.01(d).


 


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


 


“Permitted
Transferees” shall mean any person or entity to whom a Holder of Registrable Securities is permitted to transfer such
Registrable Securities prior to the expiration of the Founder Shares Lock-up Period or Private Placement Lock-up Period, as the
case may be, under the Insider Letter and any other applicable agreement between such Holder and the Company, and to any transferee
thereafter.


 


“Piggyback
Registration” shall have the meaning given in subsection 2.02(a).


 


“Private
Placement Lock-up Period” shall mean, with respect to Private Placement Warrants that are held by the initial purchasers
of such Private Placement Warrants or their Permitted Transferees, and any shares of Common Stock issued or issuable upon the
exercise or conversion of the Private Placement Warrants and that are held by the initial purchasers of the Private Placement
Warrants or their Permitted Transferees, the period ending thirty (30) days after the completion of the Company’s initial
Business Combination.


 


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


 


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


 




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


 


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


 


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


	 

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


 


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


 


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


 


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


 


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


 


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


 




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


 


“Requesting
Holder” shall have the meaning given in subsection 2.01(a).


 


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


 


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


 


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


 


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


 


ARTICLE
II.

REGISTRATIONS


 


Section
2.01 Demand Registration.


 


(a)
Request for Registration. Subject to the provisions of subsection 2.01(d) and Section 2.04 hereof,
at any time and from time to time on or after the date the Company consummates the Business Combination, the Holders of at least
a majority in interest of the then-outstanding number of Registrable Securities (the “Demanding Holders”) may
make a written demand for Registration of all or part of their Registrable Securities, which written demand shall describe the
amount and type of securities to be included in such Registration and the intended method(s) of distribution thereof (such written
demand a “Demand Registration”). The Company shall, within ten (10) days of the Company’s receipt of
the Demand Registration, notify, in writing, all other Holders of Registrable Securities of such demand, and each Holder of Registrable
Securities who thereafter wishes to include all or a portion of such Holder’s Registrable Securities in a Registration pursuant
to a Demand Registration (each such Holder that includes all or a portion of such Holder’s Registrable Securities in such
Registration, a “Requesting Holder”) shall so notify the Company, in writing, within five (5) days after the
receipt by the Holder of the notice from the Company. Upon receipt by the Company of any such written notification from a Requesting
Holder(s) to the Company, such Requesting Holder(s) shall be entitled to have their Registrable Securities included in a Registration
pursuant to a Demand Registration and the Company shall effect, as soon thereafter as practicable, but not more than forty-five
(45) days immediately after the Company’s receipt of the Demand Registration, the Registration of all Registrable Securities
requested by the Demanding Holders and Requesting Holders pursuant to such Demand Registration. Under no circumstances shall the
Company be obligated to effect more than an aggregate of three (3) Registrations pursuant to a Demand Registration under this subsection
2.01(a) with respect to any or all Registrable Securities; provided, however, that a Registration
shall not be counted for such purposes unless a Form S-1 or any similar long-form registration statement that may be available
at such time (“Form S-1”) has become effective and all of the Registrable Securities requested by the
Requesting Holders to be registered on behalf of the Requesting Holders in such Form S-1 Registration have been sold, in
accordance with Section 3.01 of this Agreement. 


 




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(b)
Effective Registration. Notwithstanding the provisions of subsection 2.01(a) above or any other part
of this Agreement, a Registration pursuant to a Demand Registration shall not count as a Registration unless and until (i) the
Registration Statement filed with the Commission with respect to a Registration pursuant to a Demand Registration has been declared
effective by the Commission and (ii) the Company has complied with all of its obligations under this Agreement with respect
thereto; provided, further, that if, after such Registration Statement has been declared effective, an
offering of Registrable Securities in a Registration pursuant to a Demand Registration is subsequently interfered with by any
stop order or injunction of the Commission, federal or state court or any other governmental agency the Registration Statement
with respect to such Registration shall be deemed not to have been declared effective, unless and until, (x) such stop order
or injunction is removed, rescinded or otherwise terminated, and (y) a majority-in-interest of the Demanding Holders initiating
such Demand Registration thereafter affirmatively elect to continue with such Registration and accordingly notify the Company
in writing, but in no event later than five (5) days, of such election; provided, further, that the Company
shall not be obligated or required to file another Registration Statement until the Registration Statement that has been previously
filed with respect to a Registration pursuant to a Demand Registration becomes effective or is subsequently terminated.


 


(c)
Underwritten Offering. Subject to the provisions of subsection 2.01(d) and Section 2.04 hereof,
if a majority-in-interest of the Demanding Holders so advise the Company as part of their Demand Registration that the offering
of the Registrable Securities pursuant to such Demand Registration shall be in the form of an Underwritten Offering, then the
right of such Demanding Holder or Requesting Holder (if any) to include its Registrable Securities in such Registration shall
be conditioned upon such Holder’s participation in such Underwritten Offering and the inclusion of such Holder’s Registrable
Securities in such Underwritten Offering to the extent provided herein. All such Holders proposing to distribute their Registrable
Securities through an Underwritten Offering under this subsection 2.01(c) shall enter into an underwriting agreement
in customary form with the Underwriter(s) selected for such Underwritten Offering by the majority-in-interest of the Demanding
Holders initiating the Demand Registration.


 




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


 


(e)
Demand Registration Withdrawal. A majority-in-interest of the Demanding Holders initiating a Demand Registration or a majority-in-interest
of the Requesting Holders (if any), pursuant to a Registration under subsection 2.01(a) shall have the right
to withdraw from a Registration pursuant to such Demand Registration for any or no reason whatsoever upon written notification
to the Company and the Underwriter or Underwriters (if any) of their intention to withdraw from such Registration prior to the
effectiveness of the Registration Statement filed with the Commission with respect to the Registration of their Registrable Securities
pursuant to such Demand Registration. Notwithstanding anything to the contrary in this Agreement, the Company shall be responsible
for the Registration Expenses incurred in connection with a Registration pursuant to a Demand Registration prior to its withdrawal
under this subsection 2.01(e).


 


Section
2.02 Piggyback Registration.


 


(a)
Piggyback Rights. If, at any time on or after the date the Company consummates a Business Combination, the Company proposes
to file a Registration Statement under the Securities Act with respect to an offering of equity securities, or securities or other
obligations exercisable or exchangeable for, or convertible into equity securities, for its own account or for the account of
stockholders of the Company (or by the Company and by the stockholders of the Company including, without limitation, pursuant
to Section 2.01 hereof), other than a Registration Statement (i) filed in connection with any employee
stock option or other benefit plan, (ii) for an exchange offer or offering of securities solely to the Company’s existing
stockholders, (iii) for an offering of debt that is convertible into equity securities of the Company or (iv) for a
dividend reinvestment plan, then the Company shall give written notice of such proposed filing to all of the Holders of Registrable
Securities as soon as practicable but not less than ten (10) days before the anticipated filing date of such Registration Statement,
which notice shall (A) describe the amount and type of securities to be included in such offering, the intended method(s)
of distribution, and the name of the proposed managing Underwriter or Underwriters, if any, in such offering, and (B) offer
to all of the Holders of Registrable Securities the opportunity to register the sale of such number of Registrable Securities
as such Holders may request in writing within five (5) days after receipt of such written notice (such Registration a “Piggyback
Registration”). The Company shall, in good faith, cause such Registrable Securities to be included in such Piggyback
Registration and shall use its best efforts to cause the managing Underwriter or Underwriters of a proposed Underwritten Offering
to permit the Registrable Securities requested by the Holders pursuant to this subsection 2.02(a) to be included
in a Piggyback Registration on the same terms and conditions as any similar securities of the Company included in such Registration
and to permit the sale or other disposition of such Registrable Securities in accordance with the intended method(s) of distribution
thereof. All such Holders proposing to distribute their Registrable Securities through an Underwritten Offering under this subsection
2.02(a) shall enter into an underwriting agreement in customary form with the Underwriter(s) selected for such Underwritten
Offering by the Company. 


 




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(b)
Reduction of Piggyback Registration. If the managing Underwriter or Underwriters in an Underwritten Registration that is
to be a Piggyback Registration, in good faith, advises the Company and the Holders of Registrable Securities participating in
the Piggyback Registration in writing that the dollar amount or number of shares of Common Stock that the Company desires to sell,
taken together with (i) the shares of Common Stock, if any, as to which Registration has been demanded pursuant to separate
written contractual arrangements with persons or entities other than the Holders of Registrable Securities hereunder, (ii) the
Registrable Securities as to which registration has been requested pursuant to Section 2.02 hereof, and
(iii) the shares of Common Stock, if any, as to which Registration has been requested pursuant to separate written contractual
piggy-back registration rights of other stockholders of the Company, exceeds the Maximum Number of Securities, then:


 


(i)
If the Registration is undertaken for the Company’s account, the Company shall include in any such Registration (A) first,
Common Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number
of Securities; (B) second, to the extent that the Maximum Number of Securities has not been reached under the foregoing clause (A),
the Registrable Securities of Holders exercising their rights to register their Registrable Securities pursuant to subsection 2.02(a) hereof,
Pro Rata, which can be sold without exceeding the Maximum Number of Securities; and (C) third, to the extent that the Maximum
Number of Securities has not been reached under the foregoing clauses (A) and (B), Common Stock, if any, as to which Registration
has been requested pursuant to written contractual piggyback registration rights of other stockholders of the Company, which can
be sold without exceeding the Maximum Number of Securities;


 


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


 




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(c)
Piggyback Registration Withdrawal. Any Holder of Registrable Securities shall have the right to withdraw from a Piggyback
Registration for any or no reason whatsoever upon written notification to the Company and the Underwriter or Underwriters (if
any) of his, her or its intention to withdraw from such Piggyback Registration prior to the effectiveness of the Registration
Statement filed with the Commission with respect to such Piggyback Registration. The Company (whether on its own good faith determination
or as the result of a request for withdrawal by persons pursuant to separate written contractual obligations) may withdraw a Registration
Statement filed with the Commission in connection with a Piggyback Registration at any time prior to the effectiveness of such
Registration Statement. Notwithstanding anything to the contrary in this Agreement, the Company shall be responsible for the Registration
Expenses incurred in connection with the Piggyback Registration prior to its withdrawal under this subsection 2.02(c).


 


(d)
Unlimited Piggyback Registration Rights. For purposes of clarity, any Registration effected pursuant to Section 2.02 hereof
shall not be counted as a Registration pursuant to a Demand Registration effected under Section 2.01 hereof.


 


Section
2.03 Registrations on Form S-3. The Holders of Registrable Securities may at any time, and from time to time, request
in writing that the Company, pursuant to Rule 415 under the Securities Act (or any successor rule promulgated thereafter
by the Commission), register the resale of any or all of their Registrable Securities on Form S-3 or any similar short form
registration statement that may be available at such time (“Form S-3”); provided, however,
that the Company shall not be obligated to effect such request through an Underwritten Offering. Within five (5) days of the Company’s
receipt of a written request from a Holder or Holders of Registrable Securities for a Registration on Form S-3, the Company
shall promptly give written notice of the proposed Registration on Form S-3 to all other Holders of Registrable Securities,
and each Holder of Registrable Securities who thereafter wishes to include all or a portion of such Holder’s Registrable
Securities in such Registration on Form S-3 shall so notify the Company, in writing, within ten (10) days after the receipt
by the Holder of the notice from the Company. As soon as practicable thereafter, but not more than twelve (12) days after the
Company’s initial receipt of such written request for a Registration on Form S-3, the Company shall register all or
such portion of such Holder’s Registrable Securities as are specified in such written request, together with all or such
portion of Registrable Securities of any other Holder or Holders joining in such request as are specified in the written notification
given by such Holder or Holders; provided, however, that the Company shall not be obligated to effect
any such Registration pursuant to Section 2.03 hereof if (i) a Form S-3 is not available for such offering; or
(ii) the Holders of Registrable Securities, together with the Holders of any other equity securities of the Company entitled
to inclusion in such Registration, propose to sell the Registrable Securities and such other equity securities (if any) at any
aggregate price to the public of less than $10,000,000. 


 




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Section
2.04 Restrictions on Registration Rights. If (A) during the period starting with the date sixty (60) days prior to
the Company’s good faith estimate of the date of the filing of, and ending on a date one hundred and twenty (120) days after
the effective date of, a Company initiated Registration and provided that the Company has delivered written notice to the Holders
prior to receipt of a Demand Registration pursuant to subsection 2.01(a) and it continues to actively employ,
in good faith, all reasonable efforts to cause the applicable Registration Statement to become effective; (B) the Holders
have requested an Underwritten Registration and the Company and the Holders are unable to obtain the commitment of underwriters
to firmly underwrite the offer; or (C) in the good faith judgment of the Board such Registration would be seriously detrimental
to the Company and the Board concludes as a result that it is essential to defer the filing of such Registration Statement at
such time, then in each case the Company shall furnish to such Holders a certificate signed by the Chairman of the Board stating
that in the good faith judgment of the Board it would be seriously detrimental to the Company for such Registration Statement
to be filed in the near future and that it is therefore essential to defer the filing of such Registration Statement. In such
event, the Company shall have the right to defer such filing for a period of not more than thirty (30) days; provided, however,
that the Company shall not defer its obligation in this manner more than twice in any 12-month period. Notwithstanding anything
to the contrary contained in this Agreement, no Registration shall be effected or permitted and no Registration Statement shall
become effective, with respect to any Registrable Securities held by any Holder, until after the expiration of the Founder Shares
Lock-Up Period or the Private Placement Lock-Up Period, as the case may be.


 


ARTICLE
III.

COMPANY PROCEDURES


 


Section
3.01 General Procedures. If at any time on or after the date the Company consummates a Business Combination the Company
is required to effect the Registration of Registrable Securities, the Company shall use its best efforts to effect such Registration
to permit the sale of such Registrable Securities in accordance with the intended plan of distribution thereof, and pursuant thereto
the Company shall, as expeditiously as possible:


 


(a)
prepare and file with the Commission as soon as practicable a Registration Statement with respect to such Registrable Securities
and use its reasonable best efforts to cause such Registration Statement to become effective and remain effective until all Registrable
Securities covered by such Registration Statement have been sold;


 


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


 




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


 


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


 


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


 


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


 


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


 


(h)
at least five (5) days prior to the filing of any Registration Statement or Prospectus or any amendment or supplement to such
Registration Statement or Prospectus or any document that is to be incorporated by reference into such Registration Statement
or Prospectus, furnish a copy thereof to each seller of such Registrable Securities or its counsel; 


 


(i)
notify the Holders at any time when a Prospectus relating to such Registration Statement is required to be delivered under the
Securities Act, of the happening of any event as a result of which the Prospectus included in such Registration Statement, as
then in effect, includes a Misstatement, and then to correct such Misstatement as set forth in Section 3.04 hereof;


 




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


 


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


 


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


 


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


 


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


 


(o)
if the Registration involves the Registration of Registrable Securities involving gross proceeds in excess of $50,000,000, use
its reasonable best efforts to make available senior executives of the Company to participate in customary “road show”
presentations that may be reasonably requested by the Underwriter in any Underwritten Offering; and


 


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


 


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


 




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


 


Section
3.04 Suspension of Sales; Adverse Disclosure. Upon receipt of written notice from the Company that a Registration Statement
or Prospectus contains a Misstatement, each of the Holders shall forthwith discontinue disposition of Registrable Securities until
he, she or it has received copies of a supplemented or amended Prospectus correcting the Misstatement (it being understood that
the Company hereby covenants to prepare and file such supplement or amendment as soon as practicable after the time of such notice),
or until he, she or it is advised in writing by the Company that the use of the Prospectus may be resumed. If the filing, initial
effectiveness or continued use of a Registration Statement in respect of any Registration at any time would require the Company
to make an Adverse Disclosure or would require the inclusion in such Registration Statement of financial statements that are unavailable
to the Company for reasons beyond the Company’s control, the Company may, upon giving prompt written notice of such action
to the Holders, delay the filing or initial effectiveness of, or suspend use of, such Registration Statement for the shortest
period of time, but in no event more than thirty (30) days, determined in good faith by the Company to be necessary for such purpose.
In the event the Company exercises its rights under the preceding sentence, the Holders agree to suspend, immediately upon their
receipt of the notice referred to above, their use of the Prospectus relating to any Registration in connection with any sale
or offer to sell Registrable Securities. The Company shall immediately notify the Holders of the expiration of any period during
which it exercised its rights under this Section 3.04.


 


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


 






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ARTICLE
IV.

INDEMNIFICATION AND CONTRIBUTION


 


Section
4.01 Indemnification.


 


(a)
The Company agrees to indemnify, to the extent permitted by law, each Holder of Registrable Securities, its officers and directors
and each person who controls such Holder (within the meaning of the Securities Act) against all losses, claims, damages, liabilities
and expenses (including, without limitation, reasonable attorneys’ fees) caused by any untrue or alleged untrue statement
of material fact contained in any Registration Statement, Prospectus or preliminary Prospectus or any amendment thereof or supplement
thereto or any omission or alleged omission of a material fact required to be stated therein or necessary to make the statements
therein not misleading, except insofar as the same are caused by or contained in any information furnished in writing to the Company
by such Holder expressly for use therein. The Company shall indemnify the Underwriters, their officers and directors and each
person who controls such Underwriters (within the meaning of the Securities Act) to the same extent as provided in the foregoing
with respect to the indemnification of the Holders.


 


(b)
In connection with any Registration Statement in which a Holder of Registrable Securities is participating, such Holder shall
furnish to the Company in writing such information and affidavits as the Company reasonably requests for use in connection with
any such Registration Statement or Prospectus and, to the extent permitted by law, shall indemnify the Company, its directors
and officers and agents and each person who controls the Company (within the meaning of the Securities Act) against any losses,
claims, damages, liabilities and expenses (including without limitation reasonable attorneys’ fees) resulting from any untrue
statement of material fact contained in the Registration Statement, Prospectus or preliminary Prospectus or any amendment thereof
or supplement thereto or any omission of a material fact required to be stated therein or necessary to make the statements therein
not misleading, but only to the extent that such untrue statement or omission is contained in any information or affidavit so
furnished in writing by such Holder expressly for use therein. The Holders of Registrable Securities shall indemnify the Underwriters,
their officers, directors and each person who controls such Underwriters (within the meaning of the Securities Act) to the same
extent as provided in the foregoing with respect to indemnification of the Company. For the avoidance of doubt, the obligation
to indemnify under this Section 4.01(b) shall be several, not joint and several, among the Holders of Registrable Securities,
and the total indemnification liability of a Holder under this Section 4.01(b) shall be in proportion to and limited to the net
proceeds received by such Holder from the sale of Registrable Securities pursuant to such Registration Statement.


 


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


 




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


 


(e)
If the indemnification provided under Section 4.01 hereof from the indemnifying party is unavailable or
insufficient to hold harmless an indemnified party in respect of any losses, claims, damages, liabilities and expenses referred
to herein, then the indemnifying party, in lieu of indemnifying the indemnified party, shall contribute to the amount paid or
payable by the indemnified party as a result of such losses, claims, damages, liabilities and expenses in such proportion as is
appropriate to reflect the relative fault of the indemnifying party and the indemnified party, as well as any other relevant equitable
considerations. The relative fault of the indemnifying party and indemnified party shall be determined by reference to, among
other things, whether any action in question, including any untrue or alleged untrue statement of a material fact or omission
or alleged omission to state a material fact, was made by, or relates to information supplied by, such indemnifying party or indemnified
party, and the indemnifying party’s and indemnified party’s relative intent, knowledge, access to information and
opportunity to correct or prevent such action; provided, however, that the liability of any Holder under
this subsection 4.01(e) shall be limited to the amount of the net proceeds received by such Holder in such
offering giving rise to such liability. The amount paid or payable by a party as a result of the losses or other liabilities referred
to above shall be deemed to include, subject to the limitations set forth in subsections 4.01(a), 4.01(b) and 4.01(c) above,
any legal or other fees, charges or expenses reasonably incurred by such party in connection with any investigation or proceeding.
The parties hereto agree that it would not be just and equitable if contribution pursuant to this subsection 4.01(e) were
determined by pro rata allocation or by any other method of allocation, which does not take account of the equitable considerations
referred to in this subsection 4.01(e). No person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the Securities Act) shall be entitled to contribution pursuant to this subsection 4.01(e) from
any person who was not guilty of such fraudulent misrepresentation.


 






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ARTICLE
V.

MISCELLANEOUS


 


Section
5.01 Notices. Any notice or communication under this Agreement must be in writing and given by (a) deposit in the
United States mail, addressed to the party to be notified, postage prepaid and registered or certified with return receipt requested,
(b) delivery in person or by courier service providing evidence of delivery, or (c) transmission by hand delivery, electronic
mail, telecopy, telegram or facsimile. Each notice or communication that is mailed, delivered, or transmitted in the manner described
above shall be deemed sufficiently given, served, sent, and received, in the case of mailed notices, on the third business day
following the date on which it is mailed and, in the case of notices delivered by courier service, hand delivery, electronic mail,
telecopy, telegram or facsimile, at such time as it is delivered to the addressee (with the delivery receipt or the affidavit
of messenger) or at such time as delivery is refused by the addressee upon presentation. Any notice or communication under this
Agreement must be addressed, if to the Company, to: 1411 Harney Street, Suite 200, Omaha, Nebraska 68102, Attention: Co-Chief
Executive Officer, and, if to any Holder, at such Holder’s address or facsimile number as set forth in the Company’s
books and records. Any party may change its address for notice at any time and from time to time by written notice to the other
parties hereto, and such change of address shall become effective thirty (30) days after delivery of such notice as provided in
this Section 5.01.


 


Section
5.02 Assignment; No Third Party Beneficiaries.


 


(a)
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.


 


(b)
Prior to the expiration of the Founder Shares Lock-up Period or the Private Placement Lock-up Period, as the case may be, no Holder
may assign or delegate such Holder’s rights, duties or obligations under this Agreement, in whole or in part, except in
connection with a transfer of Registrable Securities by such Holder to a Permitted Transferee.


 


(c)
This Agreement and the provisions hereof shall be binding upon and shall inure to the benefit of each of the parties and its successors
and the permitted assigns of the Holders, which shall include Permitted Transferees.


 


(d)
This Agreement shall not confer any rights or benefits on any persons that are not parties hereto, other than as expressly set
forth in this Agreement and Section 5.02 hereof.


 


(e)
No assignment by any party hereto of such party’s rights, duties and obligations hereunder shall be binding upon or obligate
the Company unless and until the Company shall have received (i) written notice of such assignment as provided in Section 5.01 hereof
and (ii) the written agreement of the assignee, in a form reasonably satisfactory to the Company, to be bound by the terms
and provisions of this Agreement (which may be accomplished by an addendum or certificate of joinder to this Agreement). Any transfer
or assignment made other than as provided in this Section 5.02 shall be null and void. 


 


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


 


Section
5.04 Governing Law; Venue. NOTWITHSTANDING THE PLACE WHERE THIS AGREEMENT MAY BE EXECUTED BY ANY OF THE PARTIES HERETO,
THE PARTIES EXPRESSLY AGREE THAT THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED UNDER THE LAWS OF THE STATE OF DELAWARE AS
APPLIED TO AGREEMENTS AMONG DELAWARE RESIDENTS ENTERED INTO AND TO BE PERFORMED ENTIRELY WITHIN DELAWARE, WITHOUT REGARD TO THE
CONFLICT OF LAW PROVISIONS OF SUCH JURISDICTION AND THE VENUE FOR ANY ACTION TAKEN WITH RESPECT TO THE AGREEMENT SHALL BE ANY
STATE OR FEDERAL COURT IN DOUGLAS COUNTY IN THE STATE OF NEBRASKA.


 




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EACH
PARTY HERETO ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED
AND DIFFICULT ISSUES, AND, THEREFORE, EACH SUCH PARTY HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES TO THE FULLEST EXTENT PERMITTED
BY APPLICABLE LAW, ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT TO ANY ACTION DIRECTLY OR INDIRECTLY ARISING OUT
OF, UNDER OR IN CONNECTION WITH OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT.


 


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


 


Section
5.06 Other Registration Rights. The Company represents and warrants that no person, other than a Holder of Registrable
Securities, has any right to require the Company to register any securities of the Company for sale or to include such securities
of the Company in any Registration filed by the Company for the sale of securities for its own account or for the account of any
other person. Further, the Company represents and warrants that this Agreement supersedes any other registration rights agreement
or agreement with similar terms and conditions and in the event of a conflict between any such agreement or agreements and this
Agreement, the terms of this Agreement shall prevail.


 


Section
5.07 Term. This Agreement shall terminate upon the earlier of (a) the tenth anniversary of the date of this Agreement,
(b) the date as of which (x) all of the Registrable Securities have been sold pursuant to a Registration Statement (but
in no event prior to the applicable period referred to in Section 4(a)(3) of the Securities Act and Rule 174 thereunder
(or any successor rule promulgated thereafter by the Commission)) or (y) the Holders of all Registrable Securities are
permitted to sell the Registrable Securities under Rule 144 (or any similar provision) under the Securities Act without limitation
on the amount of securities sold or the manner of sale or (c) with respect to a particular Holder, the date as of which all Registrable
Securities held by such Holder have been sold (x) pursuant to a Registration Statement (but in no event prior to the applicable
period referred to in Section 4(a)(3) of the Securities Act and Rule 174 thereunder (or any successor rule promulgated thereafter
by the Commission)) or (y) under Rule 144 (or any similar provision) or another exemption from registration under the Securities
Act. The provisions of Section 3.05 and Article IV shall survive any termination.


 


[Signature
Page Follows]


 




    19


     


    

 


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


 


	COMPANY:	 
	 	 	 
	YELLOWSTONE ACQUISITION COMPANY,	 
	 	 	 
	By:	/s/ Joshua P. Weisenburger	 
	Name:	Joshua P. Weisenburger	 
	Title:	Chief Financial Officer	 
	 	 	 
	HOLDER:	 
	 	 	 
	BOC YELLOWSTONE, LLC,	 
	 	 	 
	By:	/s/ Joshua P. Weisenburger	 
	Name:  	Joshua P. Weisenburger	 
	Title:	Chief Financial Officer	 


 


[Signature Page to Registration Rights Agreement]