Document:

Exhibit 10.3

 

 

Execution Version

 

 

 

REGISTRATION RIGHTS
AGREEMENT

 

THIS REGISTRATION
RIGHTS AGREEMENT (this “Agreement”), dated as of July 7, 2021, is made and entered into by and among AltC
Acquisition Corp., a Delaware corporation (the “Company”), AltC Sponsor LLC, a Delaware limited liability company
(the “Sponsor”), and the undersigned parties listed under Holder on the signature page hereto (each such party, together
with the Sponsor and any person or entity who hereafter becomes a party to this Agreement pursuant to Section 5.2 of this Agreement,
a “Holder” and collectively the “Holders”).

 

RECITALS

 

WHEREAS,
the Company and the Sponsor have entered into that certain Securities Subscription Agreement, dated as of March 4, 2021 pursuant to which
the Sponsor purchased an aggregate of 43,125,000 shares of the Company’s Class B common stock,
par value $0.0001 per share (the “Class B Common Stock”).

 

WHEREAS,
the Sponsor subsequently forfeited 30,625,000 shares of Class B Common Stock for no consideration, resulting in an aggregate of 12,500,000
shares of Class B Common Stock (“Founder Shares”) outstanding;

 

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,
on July 7, 2021, the Company and the Sponsor entered into that certain Private Placement Share Purchase Agreement, pursuant to which the
Sponsor agreed to purchase an aggregate of 1,350,000 shares of Common Stock (or up to 1,450,000 shares if the over-allotment option in
connection with the Company’s initial public offering is exercised in full) (the “Private Placement Shares”),
in a private placement occurring simultaneously with the closing of the Company’s initial public offering;

 

WHEREAS, in
order to finance transaction costs in connection with an intended initial business combination, the Sponsor or an affiliate of the Sponsor
or certain of the Company’s officer and directors may loan to the Company funds as the Company may require, of which up to

$1,500,000 of such loans may be convertible into private
placement-equivalent shares (“Working Capital Shares”) at a price of $10.00 per share; and

 

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:

 

 

    	 		 

     

    

 

 

ARTICLE
I DEFINITIONS

 

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

 

“Agreement”
shall have the meaning given in the Preamble. “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 with one or more businesses, involving the Company.

 

“Business
Day” means any day, other than a Saturday or a Sunday, that is neither a legal holiday nor a day on which banking institutions
are generally authorized or required by law or regulation to close in the City of New York, New York.

 

“Class
B Common Stock” shall have the meaning given in the Recitals hereto. “Commission” shall mean the Securities
and Exchange Commission. “Common Stock” shall have the meaning given in the Recitals hereto. “Company”
shall have the meaning given in the Preamble.

 

“Demand
Registration” shall have the meaning given in subsection 2.1.1. “Demanding Holder” shall have the
meaning given in subsection 2.1.1.

 

“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 2.1.1.

 

“Form S-3” shall have the meaning given
in subsection 2.3.

 

“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 year after
the completion of the Company’s initial Business Combination or (B) subsequent to the Business Combination, (x) if the closing
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 20 trading days within any 30-trading day period commencing at least 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.

 

    	 	2	 

     

    

 

 

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

 

“Insider
Letters” shall mean those certain letter agreements, dated as of July 7, 2021, 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 2.1.4. “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 case
of a 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, and pursuant
to the Insider Letters and any other applicable agreement between such Holder and the Company, in each case for so long as such agreements
remain in effect, and to any transferee thereafter.

 

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

 

“Private
Placement Lock-up Period” shall mean, with respect to Private Placement Shares that are held by the initial purchasers of such
Private Placement Shares or their Permitted Transferees, the period ending 30 days after the completion of the Company’s initial
Business Combination.

“Private Placement Shares” shall have
the meaning given in the Recitals hereto. “Prospectus” shall mean the prospectus included in any Registration Statement,
as

supplemented by any and all prospectus
supplements and as amended by any and all post-effective amendments and including all material incorporated by reference in such prospectus.

 

“Registrable
Security” shall mean (a) the shares of Common Stock issued or issuable upon the conversion of any Founder Shares, (b) the Private
Placement Shares, (c) any outstanding share of Common Stock or any other equity security (including, without limitation, the shares of
Common Stock issued or issuable upon the exercise of any other equity security) of the Company held by a Holder from time to time, (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 (including
the Working Capital Shares), 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 have been sold without registration
pursuant to Rule 144 promulgated under the Securities Act (or any successor rule promulgated by the Commission); or (E) such securities
have been sold to, or through, a broker, dealer or underwriter in a public distribution or other public securities transaction.

 

    	 	3	 

     

    

 

 

“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 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.

 

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

 

“Requesting Holder” shall have the meaning
given in subsection 2.1.1.

 

 

    	 	4	 

     

    

 

 

“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.

 

“Working Capital Shares” shall have the
meaning given in the Recitals hereto.

 

ARTICLE
II REGISTRATIONS

 

2.1       Demand
Registration.

 

2.1.1       Request
for Registration. Subject to the provisions of subsection

2.1.4 and Section 2.4 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 20% 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 three (3) Business 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) Business 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 four (4) Registrations pursuant to a Demand
Registration under this subsection 2.1.1 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 3.1 of
this Agreement.

 

2.1.2    
Effective Registration.Notwithstanding the provisions of subsection 2.1.1 above or any other part of
this Agreement, a Registration pursuant to a 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, (i) such stop order or injunction is removed, rescinded or otherwise terminated, and (ii) 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.

 

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		2.1.3	Underwritten Offering. Subject to the provisions of subsection

2.1.4 
and Section 2.4 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 2.1.3 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.

 

2.1.4                      
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) holds prior to such Underwritten Registration) 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 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 and that can be sold without exceeding the Maximum Number of Securities;
and (iii) third, to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (i) and (ii), Common
Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number of Securities.

 

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2.1.5                                              
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 2.1.1 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
2.1.5.

 

		2.2	Piggyback Registration.

 

2.2.1    
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 2.1 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 three (3) Business 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) Business 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 2.2.1 to be included in a Piggyback
Registration on the same terms and conditions as any similar securities of the Company included in such 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 2.2.1 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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2.2.2    
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 2.2 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:

 

(a)              
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;
and (B) second, to the extent that the Maximum Number of Securities has not been reached under the foregoing clause (A), the Registrable
Securities of Holders exercising their rights to register their Registrable Securities pursuant to subsection 2.2.1 hereof and
Common Stock, if any, as to which Registration has been requested pursuant to written contractual piggy- back registration rights of other
stockholders of the Company (pro rata based on the respective number of Registrable Securities that each stockholder holds prior
to such Underwritten Registration), which can be sold without exceeding the Maximum Number of Securities;

 

(b)              
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 2.2.1 and 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 (pro rata based on the respective number of Registrable Securities that
each stockholder holds prior to such Underwritten Registration), which can be sold without exceeding the Maximum Number of Securities;
and (C) third, to the extent that the Maximum Number of Securities has not been reached under the foregoing clauses (A) and (B), Common
Stock or other equity securities that the Company desires to sell, which can be sold without exceeding the Maximum Number of Securities.

 

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

 

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

 

2.3             
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 if so
requested), 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”). Within three (3) Business 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 2.3 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 $25,000,000.

 

Any request for
an underwritten offering pursuant to a Form S-3 shall follow the procedures of Section 2.1 (including Section 2.1.4) but
shall not count against the number of long form Demand Registrations that may be made pursuant to Section 2.1.1.

 

2.4             
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

 

2.4.1    
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 once 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.

 

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ARTICLE
III

COMPANY PROCEDURES

 

3.1   
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:

 

3.1.1    
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;

 

3.1.2    
prepare and file with the Commission such amendments and post-effective amendments to the Registration Statement, and such supplements
to the Prospectus, as may be 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;

 

3.1.3    
prior to filing a Registration Statement or prospectus, or any amendment or supplement thereto, furnish without charge to the
Underwriters, if any, and the Holders of Registrable Securities included in such Registration, 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 request in order to facilitate the disposition of the Registrable
Securities owned by such Holders;

 

 

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

 

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

 

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

 

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

 

3.1.8    
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;

 

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

 

3.1.10    
permit a representative of the Holders, the Underwriters, if any, and any attorney or accountant retained by such Holders or Underwriter
to participate, at each such person’s own expense, in the preparation of the Registration Statement, 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;

 

    	 	11	 

     

    

 

 

3.1.11    
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;

 

3.1.12    
on the date the Registrable Securities are delivered for sale pursuant to such Registration, obtain an opinion, dated such date,
of counsel representing the Company for the purposes of such Registration, addressed to the 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;

 

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

 

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

 

3.1.15    
if the Registration involves the Registration of Registrable Securities involving gross proceeds in excess of $25,000,000, use
its reasonable efforts to make available senior executives of the Company to participate in customary “road show” presentations
that may be reasonably requested by the Underwriter in any Underwritten Offering; and

 

3.1.16    
otherwise, in good faith, cooperate reasonably with, and take such customary actions as may reasonably be requested by the Holders,
in connection with such Registration, including, without limitation, making available senior executives of the Company to participate
in any due diligence sessions that may be reasonably requested by the Underwriter in any Underwritten Offering.

 

3.2   
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.

 

    	 	12	 

     

    

 

 

3.3   
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 (i) agrees to sell such person’s
securities on the basis provided in any underwriting arrangements approved by the Company and

(ii) completes and executes all customary
questionnaires, powers of attorney, indemnities, lock-up agreements, underwriting agreements and other customary documents as may be reasonably
required under the terms of such underwriting arrangements.

 

3.4   
Suspension of Sales; Adverse Disclosure. Upon receipt of written notice from the Company that a Registration Statement or
Prospectus contains a Misstatement, each of the Holders shall forthwith discontinue disposition of Registrable Securities until he, she
or it has received copies of a supplemented or amended Prospectus correcting the Misstatement (it being understood that the Company hereby
covenants to prepare and file such supplement or amendment as soon as practicable after the time of such notice), or until he, she or
it is advised in writing by the Company that the use of the Prospectus may be resumed. If the filing, initial effectiveness or continued
use of a Registration Statement in respect of any Registration 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 3.4.

 

3.5   
Reporting Obligations. As long as any Holder shall own Registrable Securities, the Company, at all times while
it shall be a reporting company under the Exchange Act, covenants to file timely (or obtain extensions in respect thereof and file within
the applicable grace period) all reports required to be filed by the Company after the date hereof pursuant to 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.

 

    	 	13	 

     

    

 

 

ARTICLE
IV INDEMNIFICATION AND CONTRIBUTION

 

		4.1	Indemnification.

 

4.1.1    
The Company agrees to indemnify, to the extent permitted by law, each Holder of Registrable Securities, its officers and directors
and each person who controls such Holder (within the meaning of the Securities Act) against all losses, claims, damages, liabilities and
expenses (including 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 Holder.

 

4.1.2    
In connection with any Registration Statement in which a Holder of Registrable Securities is participating, such Holder shall furnish
to the Company in writing such information and affidavits as the Company reasonably requests for use in connection with any such Registration
Statement or Prospectus and, to the extent permitted by law, shall 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; provided,
however, that the obligation to indemnify shall be several, not joint and several, among such Holders of Registrable Securities,
and the liability of each such Holder of Registrable Securities 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. 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.

 

4.1.3    
Any person entitled to indemnification herein shall (i) give prompt written notice to the indemnifying party of any claim with
respect to which it seeks indemnification (provided that the failure to give prompt notice shall not impair any person’s
right to indemnification hereunder to the extent such failure has not materially prejudiced the indemnifying party) and (ii) unless in
such indemnified party’s reasonable judgment a conflict of interest between such indemnified and indemnifying parties may exist
with respect to such claim, 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.

 

    	 	14	 

     

    

 

 

4.1.4    
The indemnification provided for under this Agreement shall remain in full force and effect regardless of any investigation made
by or on behalf of the indemnified party or any officer, director or controlling person of such indemnified party and shall survive the
transfer of securities. The Company and each Holder of Registrable Securities participating in an offering also agrees to make such provisions
as are reasonably requested by any indemnified party for contribution to such party in the event the Company’s or such Holder’s
indemnification is unavailable for any reason.

 

4.1.5    
If the indemnification provided under Section 4.1 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 4.1.5 shall be limited to the amount of the net proceeds received by such Holder in such offering
giving rise to such liability. The amount paid or payable by a party as a result of the losses or other liabilities referred to above
shall be deemed to include, subject to the limitations set forth in subsections 4.1.1, 4.1.2 and 4.1.3 above, any
legal or other fees, charges or expenses reasonably incurred by such party in connection with any investigation or proceeding. The parties
hereto agree that it would not be just and equitable if contribution pursuant to this subsection 4.1.5 were determined by pro
rata allocation or by any other method of allocation, which does not take account of the equitable considerations referred to in this
subsection 4.1.5. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act)
shall be entitled to contribution pursuant to this subsection from any person who was not guilty of such fraudulent misrepresentation.

 

ARTICLE V MISCELLANEOUS

 

5.1                                
Notices. Any notice or communication under this Agreement must be in writing and given by (i) deposit in the United States
mail, addressed to the party to be notified, postage prepaid and registered or certified with return receipt requested, (ii) delivery
in person or by courier service providing evidence of delivery, or (iii) transmission by hand delivery, 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: 640 Fifth
Avenue, 12th Floor, New York, NY 10019, Attention: Michael Klein, 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 5.1.

 

    	 	15	 

     

    

 

 

		5.2	Assignment; No Third Party Beneficiaries.

 

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

 

5.2.2                 
A Holder may assign or delegate such Holder’s rights, duties or obligations under this Agreement, in whole or in part, to
a Permitted Transferee who agrees to become bound by the transfer restrictions set forth in this Agreement.

 

5.2.2                     
This Agreement and the provisions hereof shall be binding upon and shall inure to the benefit of each of the parties and its successors
and the permitted assigns of the Holders, which shall include Permitted Transferees.

 

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

5.2 
hereof.

 

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

 

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

 

5.4             
Governing Law; Venue. NOTWITHSTANDING THE PLACE WHERE THIS AGREEMENT MAY BE EXECUTED BY ANY OF THE PARTIES HERETO,
THE PARTIES EXPRESSLY AGREE THAT THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED UNDER THE LAWS OF THE STATE OF NEW YORK AS APPLIED
TO AGREEMENTS AMONG NEW YORK RESIDENTS ENTERED INTO AND TO BE PERFORMED ENTIRELY WITHIN NEW YORK, WITHOUT REGARD TO THE CONFLICT OF LAW
PROVISIONS OF SUCH JURISDICTION AND (II) THE VENUE FOR ANY ACTION TAKEN WITH RESPECT TO THE AGREEMENT SHALL BE ANY STATE OR FEDERAL COURT
IN NEW YORK COUNTY IN THE STATE OF NEW YORK.

 

    	 	16	 

     

    

 

 

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.

 

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

 

5.6             
Other Registration Rights. The Company represents and warrants that no person, other than a 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.

 

5.7             
Term. This Agreement shall terminate upon the date as of which (A) 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 (B) 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. The provisions of Section 3.5 and Article IV shall survive any termination.

 

[Signature pages follow]

 

    	 	17	 

     

    

 

 

 

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

 

COMPANY:

 

 

	 	AltC Acquisition
Corp.
	 	a Delaware corporation
	 	 
	 	By: 	/s/ Jay Taragin
	 	 	Name: Jay Taragin
Title: Chief Financial Officer

 

HOLDERS:

 

		AltC Sponsor LLC
	 	 
	 	By: 	/s/ Jay Taragin
	 	 	Name: Jay Taragin
Title: Authorized Person

 

 

 

[Signature Page
to Registration Rights Agreement]Exhibit 10.4

 

 

EXECUTION VERSION

 

PRIVATE PLACEMENT SHARES
PURCHASE AGREEMENT

 

THIS PRIVATE PLACEMENT SHARES AGREEMENT, dated as of
July 7, 2021 (this “Agreement”), is entered into by and between AltC Acquisition Corp., a Delaware
corporation (the “Company”), and AltC Sponsor LLC, a Delaware limited liability company (the
 “Purchaser”).

 

WHEREAS, the Company
intends to consummate an initial public offering (the “Public Offering”), of the Company’s Class A common stock,
par value $0.0001 per share (each, a “Share”), as set forth in the Company’s registration statement on Form S-1
related to the Public Offering (the “Registration Statement”); and

 

WHEREAS, the Purchaser
now wishes to purchase an aggregate of 1,350,000 Shares (or 1,450,000 Shares if the underwriters’ over- allotment option is exercised
in full) (the “Private Placement Shares”).

 

NOW THEREFORE,
in consideration of the mutual promises contained in this Agreement and other good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, the parties to this Agreement hereby, intending legally to be bound, agree as follows:

 

AGREEMENT

 

Section 1.Authorization, Purchase and Sale; Terms of
the Private Placement Shares.

 

A.           
Authorization of the Private Placement Shares. The Company has duly authorized the issuance and sale of the Private Placement
Shares to the Purchaser.

 

		B.	Purchase and Sale of the Private Placement Shares.

 

(i)                
As payment in full for the 1,350,000 Private Placement Shares being purchased under this Agreement, the Purchaser shall pay $13,500,000
(the “Purchase Price”), by wire transfer of immediately available funds in accordance with the Company’s wiring
instructions, at least one (1) business day prior to the effective date of the Registration Statement, or on such other date as the Company
and the Purchaser may agree.

 

(ii)              
In the event that the underwriters’ over-allotment option is exercised in full, the Purchaser shall purchase up to an additional
100,000 Private Placement Shares (the “Additional Private Placement Shares”), in the same proportion as the amount
of the over-allotment option that is exercised, and simultaneously with such purchase of Additional Private Placement Shares, as payment
in full for the Additional Private Placement Shares being purchased hereunder, and at least one (1) business day prior to the closing
of all or any portion of the over-allotment option, or on such other date as the Company and the Purchaser may agree, the Purchaser shall
pay $10.00 per Additional Private Placement Share, up to an aggregate amount of $1,000,000, by wire transfer of immediately available
funds in accordance with the Company’s wiring instructions.

 

    	 		 

     

    

 

 

(iii)            
The closing of the purchase and sale of the Private Placement Shares shall take place simultaneously with the closing of the Public
Offering (the “Initial Closing Date”). The closing of the purchase and sale of the Additional Private Placement
Shares, if applicable, shall take place simultaneously with the closing of all or any portion of the over-allotment option (such closing
date, together with the Initial Closing Date, the “Closing Dates” and each, a “Closing Date”).
The closing of the purchase and sale of each of the Private Placement Shares and the Additional Private Placement Shares shall take place
at the offices of Weil, Gotshal & Manges LLP, 767 Fifth Avenue, New York, New York, 10153, or such other place as may be agreed upon
by the parties hereto.

 

		C.	Terms of the Private Placement Shares.

 

(i)                
The Private Placement Shares are substantially identical to the Shares to be offered in the Public Offering except: (a) as provided
in that letter agreement, dated as of the date hereof (the “Letter Agreement”), by and among the Company, the Purchaser and
each of the Company’s officers, directors and director nominees, and (b) the Private Placement Shares are being purchased pursuant
to an exemption from the registration requirements of the Securities Act and will become freely tradable only after the expiration of
the lockup described above in the Letter Agreement and they are registered pursuant to the Registration Rights Agreement (as defined below)
or an exemption from registration is available, and the restrictions described above in clause (a) have expired.

 

(ii)              
At or prior to the time of the Initial Closing Date, the Company and the Purchaser shall enter into a registration rights agreement
(the “Registration Rights Agreement”) pursuant to which the Company will grant certain registration
rights to the Purchaser relating to the Private Placement Shares.

 

Section 2. Representations and
Warranties of the Company. As a material inducement to the Purchaser to enter into this Agreement and purchase the Private Placement
Shares, the Company hereby represents and warrants to the Purchaser (which representations and warranties shall survive the Closing Dates)
that:

 

A.   
Organization and Corporate Power. The Company is a corporation duly organized, validly existing and in good standing under
the laws of the State of Delaware and is qualified to do business in every jurisdiction in which the failure to so qualify would reasonably
be expected to have a material adverse effect on the financial condition, operating results or assets of the Company. The Company possesses
all requisite corporate power and authority necessary to carry out the transactions contemplated by this Agreement.

 

		B.	Authorization; No Breach.

 

(i)   
The execution, delivery and performance of this Agreement and the Private Placement Shares have been duly authorized by the Company
as of the Closing Dates. This Agreement constitutes a valid and binding obligation of the Company, enforceable in accordance with its
terms. Upon issuance in accordance with, and payment pursuant to, the terms of the this Agreement, the Private Placement Shares will constitute
valid and binding obligations of the Company, enforceable in accordance with their terms as of the Closing Dates.

 

    	 	2	 

     

    

 

(ii)   The
execution and delivery by the Company of this Agreement and the Private Placement Shares, the issuance and sale of the Private Placement
Shares and the fulfillment of, and compliance with, the respective terms hereof and thereof by the Company, do not and will not as of
the Closing Dates (a) conflict with or result in a breach of the terms, conditions or provisions of, (b) constitute a default under,
(c) result in the creation of any lien, security interest, charge or encumbrance upon the Company’s capital stock or assets under,
(d) result in a violation of, or (e) require any authorization, consent, approval, exemption or other action by or notice or declaration
to, or filing with, any court or administrative or governmental body or agency pursuant to the certificate of incorporation or the bylaws
of the Company (in effect on the date hereof or as may be amended prior to completion of the contemplated Public Offering), or any material
law, statute, rule or regulation to which the Company is subject, or any agreement, order, judgment or decree to which the Company is
subject, except for any filings required after the date hereof under federal or state securities laws.

 

C.   
Title to Securities. Upon issuance in accordance with, and payment pursuant to, the terms hereof, the Private Placement
Shares will be duly and validly issued, fully paid and nonassessable. Upon issuance in accordance with, and payment pursuant to, the terms
hereof, the Purchaser will have good title to the Private Placement Shares, free and clear of all liens, claims and encumbrances of any
kind, other than (i) transfer restrictions hereunder and under the other agreements contemplated hereby, (ii) transfer restrictions under
federal and state securities laws, and (iii) liens, claims or encumbrances imposed due to the actions of the Purchaser.

 

D.   
Governmental Consents. No permit, consent, approval or authorization of, or declaration to or filing with, any governmental
authority is required in connection with the execution, delivery and performance by the Company of this Agreement or the consummation
by the Company of any other transactions contemplated hereby.

 

E.   
Regulation D Qualification. Neither the Company nor, to its knowledge, any of its affiliates, officers, directors or beneficial
stockholders of 20% or more of its outstanding securities, has experienced a disqualifying event as enumerated pursuant to Rule 506(d)
of Regulation D under the Securities Act of 1933, as amended (the “Securities Act”).

 

Section 3. Representations and
Warranties of the Purchaser. As a material inducement to the Company to enter into this Agreement and issue and sell the Private Placement
Shares to the Purchaser, the Purchaser hereby represents and warrants to the Company (which representations and warranties shall survive
the Closing Dates) that:

 

A.         
Organization and Requisite Authority. The Purchaser possesses all requisite power and authority necessary to carry out the
transactions contemplated by this Agreement.

 

		B.	Authorization; No Breach.

 

(i)   
This Agreement constitutes a valid and binding obligation of the Purchaser, enforceable in accordance with its terms, subject to
bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other laws of general applicability relating to or affecting
creditors’ rights and to general equitable principles (whether considered in a proceeding in equity or law).

 

    	 	3	 

     

    

 

 

(ii)   
The execution and delivery by the Purchaser of this Agreement and the fulfillment of and compliance with the terms hereof by the
Purchaser does not and shall not as of the Closing Dates conflict with or result in a breach by the Purchaser of the terms, conditions
or provisions of any agreement, instrument, order, judgment or decree to which the Purchaser is subject.

 

		C.	Investment Representations.

 

(i)   
The Purchaser is acquiring the Private Placement Shares for the Purchaser’s own account, for investment purposes only and
not with a view towards, or for resale in connection with, any public sale or distribution thereof.

 

(ii)   
The Purchaser is an “accredited investor” as such term is defined in Rule 501(a)(3) of Regulation D under the Securities
Act and the Purchaser has not experienced a disqualifying event as enumerated pursuant to Rule 506(d) of Regulation D under the Securities
Act.

 

(iii)   
The Purchaser understands that the Private Placement Shares are being offered and will be sold to it in reliance on specific exemptions
from the registration requirements of the United States federal and state securities laws and that the Company is relying upon the truth
and accuracy of, and the Purchaser’s compliance with, the representations and warranties of the Purchaser set forth herein in order
to determine the availability of such exemptions and the eligibility of the Purchaser to acquire such Private Placement Shares.

 

(iv)   
The Purchaser did not enter into this Agreement as a result of any general solicitation or general advertising within the meaning
of Rule 502(c) under the Securities Act.

 

(v)   
The Purchaser has been furnished with all materials relating to the business, finances and operations of the Company and materials
relating to the offer and sale of the Private Placement Shares which have been requested by the Purchaser. The Purchaser has been afforded
the opportunity to ask questions of the executive officers and directors of the Company. The Purchaser understands that its investment
in the Private Placement Shares involves a high degree of risk and it has sought such accounting, legal and tax advice as it has considered
necessary to make an informed investment decision with respect to the acquisition of the Private Placement Shares.

 

(vi)   
The Purchaser understands that no United States federal or state agency or any other government or governmental agency has passed
on or made any recommendation or endorsement of the Private Placement Shares or the fairness or suitability of the investment in the Private
Placement Shares by the Purchaser nor have such authorities passed upon or endorsed the merits of the offering of the Private Placement
Shares.

 

(vii)  
The Purchaser understands that: (a) the Private Placement Shares have not been and are not being registered under the Securities
Act or any state securities laws, and may not be offered for sale, sold, assigned or transferred unless (1) subsequently registered thereunder
or (2) sold in reliance on an exemption therefrom; and (b) except as specifically set forth in the Registration Rights Agreement, neither
the Company nor any other person is under any obligation to register the Private Placement Shares under the Securities Act or any state
securities laws or to comply with the terms and conditions of any exemption thereunder.

 

 

    	 	4	 

     

    

 

 

(viii)  
The Purchaser has such knowledge and experience in financial and business matters, knowledge of the high degree of risk associated
with investments in the securities of companies in the development stage such as the Company, is capable of evaluating the merits and
risks of an investment in the Private Placement Shares and is able to bear the economic risk of an investment in the Private Placement
Shares in the amount contemplated hereunder for an indefinite period of time. The Purchaser has adequate means of providing for its current
financial needs and contingencies and will have no current or anticipated future needs for liquidity which would be jeopardized by the
investment in the Private Placement Shares. The Purchaser can afford a complete loss of its investments in the Private Placement Shares.

 

Section 4. Conditions of the Purchaser’s
Obligations. The obligations of the Purchaser to purchase and pay for the Private Placement Shares are subject to the fulfillment,
on or before the Closing Dates, of each of the following conditions:

 

A.   
Representations and Warranties. The representations and warranties of the Company contained in Section 2 shall be
true and correct at and as of the Closing Dates as though then made.

 

B.   
Performance. The Company shall have performed and complied with all agreements, obligations and conditions contained in
this Agreement that are required to be performed or complied with by it on or before the Closing Dates.

 

C.   
No Injunction. No litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been enacted,
entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory organization
having authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated by this
Agreement or the Warrant Agreement.

 

D.   
Registration Rights Agreement. The Company shall have entered into a Registration Rights Agreement on terms satisfactory
to the Purchaser.

 

Section 5. Conditions of the Company’s
Obligations. The obligations of the Company to the Purchaser under this Agreement are subject to the fulfillment, on or before the
Closing Dates, of each of the following conditions:

 

A.   
Representations and Warranties. The representations and warranties of the Purchaser contained in Section 3 shall
be true and correct at and as of the Closing Dates as though then made.

 

B.   
Performance. The Purchaser shall have performed and complied with all agreements, obligations and conditions contained in
this Agreement that are required to be performed or complied with by the Purchaser on or before the Closing Dates.

 

C.   
No Injunction. No litigation, statute, rule, regulation, executive order, decree, ruling or injunction shall have been
enacted, entered, promulgated or endorsed by or in any court or governmental authority of competent jurisdiction or any self-regulatory
organization having authority over the matters contemplated hereby, which prohibits the consummation of any of the transactions contemplated
by this Agreement.

 

    	 	5	 

     

    

 

 

Section 6. Termination. This
Agreement may be terminated at any time after July 31, 2021 upon the election by either the Company or the Purchaser upon written notice
to the other parties if the closing of the Public Offering does not occur prior to such date.

 

Section 7. Survival of Representations
and Warranties. All of the representations and warranties contained herein shall survive the Closing Dates.

 

Section 8. Definitions. Terms
used but not otherwise defined in this Agreement shall have the meaning assigned to such terms in the Registration Statement.

 

Section 9. Miscellaneous.

 

A.   
Successors and Assigns. Except as otherwise expressly provided herein, all covenants and agreements contained in this Agreement
by or on behalf of any of the parties hereto shall bind and inure to the benefit of the respective successors of the parties hereto whether
so expressed or not. Notwithstanding the foregoing or anything to the contrary herein, the parties may not assign this Agreement, other
than assignments by the Purchaser to affiliates thereof.

 

B.    
Severability. Whenever possible, each provision of this Agreement shall be interpreted in such manner as to be effective
and valid under applicable law, but if any provision of this Agreement is held to be prohibited by or invalid under applicable law, such
provision shall be ineffective only to the extent of such prohibition or invalidity, without invalidating the remainder of this Agreement.

 

C.    
Counterparts. This Agreement may be executed simultaneously in two or more counterparts, none of which need contain the
signatures of more than one party, but all such counterparts taken together shall constitute one and the same agreement.

 

D.   
Descriptive Headings; Interpretation. The descriptive headings of this Agreement are inserted for convenience only and do
not constitute a substantive part of this Agreement. The use of the word “including” in this Agreement shall be by way of
example rather than by limitation.

 

E.     
Governing Law. This Agreement and the rights and obligations of the parties hereunder shall be construed in accordance with
and governed by the laws of New York applicable to contracts wholly performed within the borders of such state, without giving effect
to the conflict of law principles thereof. The parties hereto irrevocably submit to the exclusive jurisdiction of any federal court sitting
in the Southern District of New York or any state court located in New York County, State of New York, over any suit, action or proceeding
arising out of or relating to this Agreement. To the fullest extent they may effectively do so under applicable law, the parties hereto
irrevocably waive and agree not to assert, by way of motion, as a defense or otherwise, any claim that they are not subject to the jurisdiction
of any such court, any objection that they may now or hereafter have to the laying of the venue of any such suit, action or proceeding
brought in any such court and any claim that any such suit, action or proceeding brought in any such court has been brought in an inconvenient
forum.

 

    	 	6	 

     

    

 

 

F.      
Amendments. This letter agreement may not be amended, modified or waived as to any particular provision, except by a written
instrument executed by all parties hereto.

 

[Signature page follows]

 

    	 	7	 

     

    

 

IN WITNESS WHEREOF, the parties hereto have executed
this Agreement to be effective as of the date first set forth above.

 

COMPANY:

 

 

	 	ALTC ACQUISITION CORP. 
	 	 
	 	By: 	/s/ Jay Taragin
	 	 	Name: Jay Taragin
Title: Chief Financial Officer

 

 

		ALTC SPONSOR LLC
	 	 
	 	By: 	/s/ Jay Taragin
	 	 	Name: Jay Taragin
Title: Authorized Person

 

 

 

[Signature Page to Private Placement Shares Purchase Agreement]

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