Exhibit 10.4


 


REGISTRATION RIGHTS AGREEMENT


 


THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”),
dated as of [●], 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”). On March 9,
2021, the Sponsor forfeited 14,375,000 shares of Class B Common Stock for no consideration, resulting in an aggregate of
28,750,000 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 [●], 2021, the Company
and the Sponsor entered into that certain Private Placement Warrants Purchase Agreement, pursuant to which the Sponsor agreed to
purchase an aggregate of 25,000,000 warrants (or up to 28,000,000 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 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 warrants (“Working Capital Warrants”) at a price of $1.00 per warrant; 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.


 






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“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.


 


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


 


“Insider Letters” shall
mean those certain letter agreements, dated as of [●], 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 Warrants that are held by the initial purchasers of such Private Placement Warrants
or their Permitted Transferees, the Private Placement Warrants 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 30 days after the completion of the Company’s initial Business Combination.


 


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


 






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“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 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, without limitation, the shares of Common
Stock issued or issuable upon the exercise of any other equity security, units comprising shares of Common Stock and warrants,
and warrants) 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 Warrants and any shares
of Common Stock issuable upon the exercise of the Working Capital Warrants), 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.


 


“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;


 






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(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.


 


“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 Warrants”
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.


 






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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.


 


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.


 






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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.


 


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.


 






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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.


 


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;


 






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(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.


 


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.


 






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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 2.1.1 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.


 


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;


 






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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;


 


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


 






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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;


 


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;


 






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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.


 


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.


 






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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.


 


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.


 






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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.


 


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.


 






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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 4.1.5 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.


 


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.


 






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5.2.3       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.


 


5.2.4       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.


 


5.2.5       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.


 


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.


 






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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]


 






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


 


	 	COMPANY:
	 	 
	 	AltC Acquisition Corp.
 a
    Delaware corporation
	 	 
	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:
	 	 
	 	HOLDERS:
	 	 
	 	AltC Sponsor LLC
	 	 
	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:






 


[Signature Page to Registration Rights Agreement]