Exhibit 10.6


 


Execution Version


 


REGISTRATION RIGHTS AGREEMENT


 


This REGISTRATION RIGHTS
AGREEMENT (this “Agreement”), dated as of August 5, 2022, is made by and among TAILWIND ACQUISITION
CORP., a Delaware corporation (the “Company”), NUBURU, INC., a Delaware corporation (“Nuburu”),
and LINCOLN PARK CAPITAL FUND, LLC, an Illinois limited liability
company (together with its permitted assigns, the “Buyer”). Capitalized terms used herein and not otherwise
defined herein shall have the respective meanings set forth in the Purchase Agreement by and among the parties hereto, dated as of the
date hereof (as amended, restated, supplemented or otherwise modified from time to time, the “Purchase Agreement”).


 


WHEREAS:


 


Pursuant to that certain
Business Combination Agreement, dated as of August 5, 2022 (as may be amended, modified, restated or supplemented from time
to time, the “Business Combination Agreement”), by and among the Company, Nuburu, and Compass Merger Sub, Inc., a
wholly owned subsidiary of the Company (“Merger Sub”), the Company and Nuburu intend to effect a merger of Merger
Sub with and into Nuburu (the “Merger”) and, upon consummation of the Merger (the “Closing”), Merger
Sub will cease to exist and Nuburu will become a wholly owned subsidiary of the Company;


 


In connection with the Closing,
the Company’s name shall be changed from “Tailwind Acquisition Corp.” to “Nuburu, Inc.” and Nuburu’s
name shall be changed from “Nuburu, Inc.” to “Nuburu Subsidiary, Inc.”; and


 


From and after the Closing,
and subject to the terms and conditions set forth in the Purchase Agreement, the Company wishes to sell to the Investor, and the Investor
wishes to buy from the Company, up to one hundred million dollars ($100,000,000) of Purchase Shares, and to induce the Buyer to enter
into the Purchase Agreement, the Company has agreed to provide certain registration rights under the Securities Act of 1933, as amended,
and the rules and regulations thereunder (collectively, the “Securities Act”), and applicable state securities laws.


 


NOW, THEREFORE, in
consideration of the promises and the mutual covenants contained herein and other good and valuable consideration, the receipt and sufficiency
of which are hereby acknowledged, the Company and the Buyer hereby agree as follows:


 


1.             DEFINITIONS.


 


As used in this Agreement,
the following terms shall have the following meanings:


 


(a)               
“Investor” means the Buyer, any transferee or assignee thereof to whom the Buyer assigns its rights under this
Agreement in accordance with Section 9 and who agrees to become bound by the provisions of this Agreement, and any transferee or assignee
thereof to whom a transferee or assignee assigns its rights under this Agreement in accordance with Section 9 and who agrees to become
bound by the provisions of this Agreement.


 


(b)               
“Person” means any individual or entity including but not limited to any corporation, a limited liability company,
an exempted company, an association, a partnership, an exempted partnership, an organization, a business, an individual, a governmental
or political subdivision thereof or a governmental agency.


 


(c)               
“Register,” “registered,” and “registration” refer to a registration
effected by preparing and filing one or more registration statements of the Company in compliance with the Securities Act and pursuant
to Rule 415 under the Securities Act or any successor rule providing for offering securities on a continuous basis (“Rule 415”),
and the declaration or ordering of effectiveness of such registration statement(s) by the United States Securities and Exchange Commission
(the “SEC”).


 






     


     


    

 





(d)               
“Registrable Securities” means all of the Commitment Shares and all of the Purchase Shares that may, from time
to time, be issued or become issuable to the Investor under the Purchase Agreement (without regard to any limitation or restriction on
purchases), and any and all shares of capital stock issued or issuable with respect to the Purchase Shares or the Commitment Shares or
the Purchase Agreement as a result of any stock split, reverse stock split, share dividend, recapitalization, exchange or similar event
or otherwise, without regard to any limitation on purchases under the Purchase Agreement.


 


(e)               
“Registration Statement” means one or more registration statements of the Company covering only the sale of
the Registrable Securities.


 


2.             REGISTRATION.


 


(a)               
Mandatory Registration. The Company shall, within thirty (30) days following the Closing, file with the SEC an initial
Registration Statement covering the maximum number of Registrable Securities as shall be permitted to be included thereon in accordance
with applicable SEC rules, regulations and interpretations so as to permit the resale of such Registrable Securities by the Investor
under Rule 415 under the Securities Act at then prevailing market prices (and not fixed prices), as mutually determined by both the Company
and the Investor in consultation with their respective legal counsel, subject to the aggregate number of authorized shares of the Company’s
Common Stock then available for issuance in its Amended and Restated Certificate of Incorporation and the Exchange Cap (as defined in
the Purchase Agreement); provided, however, that the Company may delay filing or suspend the use of any Registration Statement
if the Company determines, upon advice of legal counsel, that in order for the registration statement to not contain a material misstatement
or omission, an amendment thereto would be needed. The initial Registration Statement shall register only the Registrable Securities.
The Investor and its counsel shall have a reasonable opportunity to review and comment upon such Registration Statement and any amendment
or supplement to such Registration Statement and any related prospectus prior to its filing with the SEC, and the Company shall give
due consideration to all such comments. The Investor shall furnish all information reasonably requested by the Company for inclusion
therein. The Company shall use its commercially reasonable efforts to have the Registration Statement and any amendment declared effective
by the SEC at the earliest possible date. The Company shall use commercially reasonable efforts to keep the Registration Statement effective
pursuant to Rule 415 promulgated under the Securities Act and available for the resale by the Investor of all of the Registrable Securities
covered thereby at all times until the earlier of (i) the date on which the Investor shall have resold all the Registrable Securities
covered thereby and no Available Amount remains under the Purchase Agreement, (ii) such Registrable Securities may be sold without registration
pursuant to Rule 144 (as defined below) without limitation as to volume and manner of sale restrictions and no Available Amount remains
under the Purchase Agreement, (iii) six months after the termination of the Purchase Agreement, and (iv) one year after the date on which
no Available Amount remains under the Purchase Agreement (the “Registration Period”). The Registration Statement (including
any amendments or supplements thereto and prospectuses contained therein) shall not contain any untrue statement of a material fact or
omit to state a material fact required to be stated therein, or necessary to make the statements therein, in light of the circumstances
in which they were made, not misleading.


 


(b)               
Rule 424 Prospectus. The Company shall, as required by applicable securities regulations, from time to time file with the
SEC, pursuant to Rule 424 promulgated under the Securities Act, the prospectus and prospectus supplements, if any, to be used in connection
with sales of the Registrable Securities under the Registration Statement. The Investor and its counsel shall have a reasonable opportunity
to review and comment upon such prospectus prior to its filing with the SEC, and the Company shall give due consideration to all such
comments; provided that the Company shall not be required to provide, and the Investor shall not have an opportunity to review,
any prospectus supplement filed solely to include in the Registration statement, from time to time, documents filed with, or furnished
to, the SEC by the Company under the Exchange Act (as defined below). The Investor shall use its commercially reasonable efforts to comment
upon such prospectus within one (1) Business Day from the date the Investor receives the substantially final pre-filing version of such
prospectus.


 






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(c)               
Sufficient Number of Shares Registered. In the event the number of shares available under the Registration Statement is
insufficient to cover all of the Registrable Securities, the Company shall amend the Registration Statement or file a new Registration
Statement (a “New Registration Statement”), so as to cover all of such Registrable Securities (subject to the limitations
set forth in Section 2(a)) as soon as practicable, but in any event not later than ten (10) Business Days after the necessity therefor
arises, subject to any limits that may be imposed by the SEC pursuant to Rule 415 under the Securities Act. The Company shall use its
commercially reasonable efforts to cause such amendment and/or New Registration Statement to become effective as soon as practicable
following the filing thereof.


 


(d)               
Offering. If the staff of the SEC (the “Staff”) or the SEC seeks to characterize any offering pursuant
to a Registration Statement filed pursuant to this Agreement as constituting an offering of securities that does not permit such Registration
Statement to become effective and be used for resales by the Investor under Rule 415 at then-prevailing market prices (and not fixed
prices), or if after the filing of the initial Registration Statement with the SEC pursuant to Section 2(a), the Company is otherwise
required by the Staff or the SEC to reduce the number of Registrable Securities included in such initial Registration Statement, then
the Company shall reduce the number of Registrable Securities to be included in such initial Registration Statement (with the prior consent,
which shall not be unreasonably withheld, of the Investor as to the specific Registrable Securities to be removed therefrom) until such
time as the Staff and the SEC shall so permit such Registration Statement to become effective and be used as aforesaid. In the event
of any reduction in Registrable Securities pursuant to this paragraph, the Company shall file one or more New Registration Statements
in accordance with Section 2(c) until such time as all Registrable Securities have been included in Registration Statements that have
been declared effective and the prospectus contained therein is available for use by the Investor. Notwithstanding any provision herein
or in the Purchase Agreement to the contrary, the Company’s obligations to register Registrable Securities (and any related conditions
to the Investor’s obligations) shall be qualified as necessary to comport with any requirement of the SEC or the Staff as addressed
in this Section 2(d).


 


3.             RELATED
OBLIGATIONS.


 


With respect to the Registration
Statement and whenever any Registrable Securities are to be registered pursuant to Section 2 including on any New Registration Statement,
the Company shall use its commercially reasonable efforts to effect the registration of the Registrable Securities in accordance with
the intended method of disposition thereof and, pursuant thereto, the Company shall have the following obligations:


 


(a)               
The Company shall prepare and file with the SEC such amendments (including post-effective amendments) and supplements to any Registration
Statement and the prospectus used in connection with such Registration Statement, which prospectus is to be filed pursuant to Rule 424
promulgated under the Securities Act, as may be necessary to keep the Registration Statement or any New Registration Statement effective
at all times during the Registration Period, and, during such period, comply with the provisions of the Securities Act in connection
with the offer, issuance and sale of the Registrable Securities.


 






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(b)               
The Company shall permit the Investor to review and comment upon the final prefiling draft version of the Registration Statement
or any New Registration Statement and any amendments or supplements thereto at least two (2) Business Days prior to its filing with the
SEC and, with respect to information regarding the Investor or the transaction contemplated hereby, the Company shall not file the Registration
Statement or any New Registration Statement and any amendments or supplements thereto with the SEC in a form to which the Investor reasonably
objects. The Investor shall use its commercially reasonable efforts to comment upon the Registration Statement or any New Registration
Statement and any amendments or supplements thereto within two (2) Business Days from the date the Investor receives the final version
thereof. The Company shall furnish to the Investor, without charge, any correspondence from the SEC or the staff of the SEC to the Company
or its representatives relating to the Registration Statement or any New Registration Statement.


 


(c)               
Upon request of the Investor, the Company shall furnish to the Investor, (i) promptly after the same is prepared and filed with
the SEC, at least one copy of such Registration Statement and any amendment(s) thereto, including financial statements and schedules,
all documents incorporated therein by reference and all exhibits, (ii) upon the effectiveness of any Registration Statement, a copy of
the prospectus included in such Registration Statement and all amendments and supplements thereto (or such other number of copies as
the Investor may reasonably request) and (iii) such other documents, including copies of any preliminary or final prospectus, as the
Investor may reasonably request from time to time in order to facilitate the disposition of the Registrable Securities owned by the Investor.
For the avoidance of doubt, any filing available to the Investor via the SEC’s live EDGAR system shall be deemed “furnished
to the Investor” hereunder.


 


(d)               
Upon the request of the Investor, the Company shall use commercially reasonable efforts to (i) register and qualify the resale
by the Investor of the Registrable Securities covered by a Registration Statement under such other securities or “blue sky”
laws of such jurisdictions in the United States as the Investor reasonably requests, (ii) prepare and file in those jurisdictions, such
amendments (including post-effective amendments) and supplements to such registrations and qualifications as may be necessary to maintain
the effectiveness thereof during the Registration Period, (iii) take such other actions as may be necessary to maintain such registrations
and qualifications in effect at all times during the Registration Period, and (iv) take all other actions reasonably necessary or advisable
to qualify the Registrable Securities for sale in such jurisdictions; provided, however, that the Company shall not be
required in connection therewith or as a condition thereto to (x) qualify to do business in any jurisdiction where it would not otherwise
be required to qualify but for this Section 3(d), (y) subject itself to general taxation in any such jurisdiction, or (z) file a general
consent to service of process in any such jurisdiction. The Company shall promptly notify the Investor who holds Registrable Securities
of the receipt by the Company of any notification with respect to the suspension of the registration or qualification of any of the Registrable
Securities for sale under the securities or “blue sky” laws of any jurisdiction in the United States or its receipt of actual
notice of the initiation or threatening of any proceeding for such purpose.


 


(e)               
As promptly as practicable after becoming aware of such event or facts, the Company shall notify the Investor in writing of the
happening of any event or existence of such facts as a result of which the prospectus included in any Registration Statement, as then
in effect, includes an untrue statement of a material fact or omits to state a material fact required to be stated therein or necessary
to make the statements therein, in light of the circumstances under which they were made, not misleading (provided that in no
event shall such notice contain any material, non-public information regarding the Company), and promptly prepare a supplement or amendment
to such Registration Statement to correct such untrue statement or omission, and deliver a copy of such supplement or amendment to the
Investor (or such other number of copies as the Investor may reasonably request), provided, however, that the Company may
delay filing such supplement or amendment if the Company, upon advice of legal counsel, reasonably believes that such filing or use could
materially affect a bona fide business or financing transaction of the Company or would require premature disclosure of information
that could materially adversely affect the Company. The Company shall also promptly notify the Investor in writing (i) when a prospectus
or any prospectus supplement or post-effective amendment has been filed, and when a Registration Statement or any post-effective amendment
has become effective (notification of such effectiveness shall be delivered to the Investor by email or facsimile on the same day of
such effectiveness), (ii) of any request by the SEC for amendments or supplements to any Registration Statement or related prospectus
or related information, and (iii) of the Company’s reasonable determination that a post-effective amendment to a Registration Statement
would be appropriate.


 






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(f)                
The Company shall use its commercially reasonable efforts to prevent the issuance of any stop order or other suspension of effectiveness
of any registration statement, or the suspension of the qualification of any Registrable Securities for sale in any jurisdiction and,
if such an order or suspension is issued, to obtain the withdrawal of such order or suspension at the earliest possible moment and to
notify the Investor of the issuance of such order and the resolution thereof or its receipt of actual notice of the initiation or threat
of any proceeding for such purpose.


 


(g)               
The Company shall (i) cause all the Registrable Securities to be listed on each securities exchange on which securities of the
same class or series issued by the Company are then listed, if any, if the listing of such Registrable Securities is then permitted under
the rules of such exchange, or (ii) secure designation and quotation of all the Registrable Securities on the Principal Market. The Company
shall pay all fees and expenses in connection with satisfying its obligation under this Section 3.


 


(h)               
The Company shall cooperate with the Investor to facilitate the timely preparation and delivery of certificates or book-entry
confirmations (in each case not bearing any restrictive legend) representing the Registrable Securities to be offered pursuant to any
registration statement and enable such certificates or book-entry confirmations to be in such denominations or amounts as the Investor
may reasonably request and registered in such names as the Investor may request.


 


(i)                
The Company shall at all times provide a transfer agent and registrar with respect to its Common Stock.


 


(j)                
If reasonably requested in writing by the Investor, the Company shall (i) as soon as practicable after receipt of written notice
from the Investor, incorporate in a prospectus supplement or post-effective amendment such information as the Investor reasonably requests
be included therein relating to the sale and distribution of Registrable Securities, including, without limitation, information with
respect to the number of Registrable Securities being sold, the purchase price being paid therefor and any other terms of the offering
of the Registrable Securities; (ii) make all required filings of such prospectus supplement or post-effective amendment as soon as practicable
upon notification of the matters to be incorporated in such prospectus supplement or post-effective amendment; and (iii) supplement or
make amendments to any Registration Statement or New Registration Statement.


 


(k)               
The Company shall use its commercially reasonable efforts to cause the Registrable Securities covered by any Registration Statement
to be registered with or approved by such other governmental agencies or authorities as may be necessary to consummate the disposition
of such Registrable Securities.





(l)                
Within one (1) Business Day after any Registration Statement which includes the Registrable Securities is declared effective by
the SEC, the Company shall deliver, and shall cause legal counsel for the Company to deliver, to the Transfer Agent for such Registrable
Securities (with copies to the Investor) confirmation that such Registration Statement has been declared effective by the SEC in the
form attached hereto as Exhibit A, or such other form acceptable to the Company’s Transfer Agent. Thereafter, if requested
by the Investor at any time, the Company shall require its counsel to deliver to the Investor a written confirmation as to whether the
Registration Statement has been declared effective under the Securities Act and whether, to its knowledge, a stop order suspending the
effectiveness of the Registration Statement has been issued or threatened by the SEC.


 


(m)             
The Company shall take all other reasonable actions necessary to expedite and facilitate disposition by the Investor of Registrable
Securities pursuant to any Registration Statement.


 






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4.             OBLIGATIONS
OF THE INVESTOR.


 


(a)               
The Company shall notify the Investor in writing of the information the Company reasonably requires from the Investor in connection
with any Registration Statement hereunder. The Investor shall as soon as practicable furnish to the Company such information regarding
itself, the Registrable Securities held by it and the intended method of disposition of the Registrable Securities held by it as shall
be reasonably required to effect the registration of such Registrable Securities and shall execute such documents in connection with
such registration as the Company may reasonably request.


 


(b)               
The Investor agrees to cooperate with the Company as reasonably requested by the Company in connection with the preparation and
filing of any Registration Statement hereunder and any amendments and supplements thereto.


 


(c)               
The Investor agrees that, upon receipt of any notice from the Company of the happening of any event or existence of facts of the
kind described in Section 3(f) or the first sentence of Section 3(e), the Investor will immediately discontinue disposition of Registrable
Securities pursuant to any Registration Statement(s) covering such Registrable Securities until the Investor’s receipt of copies
of a notice regarding the resolution or withdrawal of the stop order or suspension as contemplated by Section 3(f) or of the supplemented
or amended prospectus contemplated by Section 3(f) or the first sentence of 3(e). Notwithstanding anything to the contrary, the Company
shall cause its Transfer Agent to promptly deliver shares of Common Stock without any restrictive legend in accordance with the terms
of the Purchase Agreement in connection with any sale of Registrable Securities with respect to which the Investor has entered into a
contract for sale prior to the Investor’s receipt of a notice from the Company of the happening of any event of the kind described
in Section 3(f) or the first sentence of Section 3(e) and for which the Investor has not yet settled.


 


5.             EXPENSES OF REGISTRATION.


 


All reasonable expenses, other
than sales or brokerage commissions and fees incurred in connection with its sale of the Registrable Securities, including the fees and
disbursement of counsel for the Investor, incurred in connection with registrations, filings or qualifications pursuant to Section 2
and Section 3, including, without limitation, all registration, listing and qualifications fees, printers and accounting fees, and fees
and disbursements of counsel for the Company, shall be paid by the Company.


 






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6.             INDEMNIFICATION.


 


(a)               
To the fullest extent permitted by law, the Company will, and hereby does, indemnify, hold harmless and defend the Investor, each
Person, if any, who controls the Investor, the members, the directors, officers, partners, employees, agents, members, managers representatives
of the Investor and each Person, if any, who controls the Investor within the meaning of the Securities Act or the Securities Exchange
Act of 1934, as amended (the “Exchange Act”) (each, an “Indemnified Person”), against any losses,
claims, damages, liabilities, judgments, fines, penalties, charges, costs, attorneys’ fees, amounts paid in settlement or expenses,
joint or several, (collectively, “Claims”) incurred in investigating, preparing or defending any action, claim, suit,
inquiry, proceeding, investigation or appeal taken from the foregoing by or before any court or governmental, administrative or other
regulatory agency, body or the SEC, whether pending or threatened, whether or not an indemnified party is or may be a party thereto (“Indemnified
Damages”), to which any of them may become subject insofar as such Claims (or actions or proceedings, whether commenced or
threatened, in respect thereof) arise out of or are based upon: (i) any untrue statement or alleged untrue statement of a material fact
in the Registration Statement, any New Registration Statement or any post-effective amendment thereto, or the omission or alleged omission
to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (ii) any untrue statement
or alleged untrue statement of a material fact contained in the final prospectus (as amended or supplemented, if the Company files any
amendment thereof or supplement thereto with the SEC) or the omission or alleged omission to state therein any material fact necessary
to make the statements made therein, in light of the circumstances under which the statements therein were made, not misleading or (iii)
any violation or alleged violation by the Company of the Securities Act, the Exchange Act, any other law, including, without limitation,
any state securities law, or any rule or regulation thereunder relating to the offer or sale of the Registrable Securities pursuant to
the Registration Statement or any New Registration Statement (the matters in the foregoing clauses (i) through (iii) being, collectively,
 “Violations”). The Company shall reimburse each Indemnified Person promptly as such expenses are incurred and are
due and payable, for any reasonable, documented out-of-pocket legal fees or other reasonable, documented out-of-pocket expenses incurred
by them in connection with investigating or defending any such Claim. Notwithstanding anything to the contrary contained herein, the
indemnification agreement contained in this Section 6(a): (i) shall not apply to a Claim by an Indemnified Person arising out of or based
upon a Violation which occurs in reliance upon and in conformity with information about the Investor furnished in writing to the Company
by any Indemnified Person expressly for use in connection with the preparation of the Registration Statement, any New Registration Statement
or any such amendment thereof or supplement thereto or prospectus contained therein, if such Registration Statement, New Registration
Statement or amendment thereof or supplement thereto or prospectus contained therein was timely made available by the Company pursuant
to Section 3(c) or Section 3(e); (ii) with respect to any superseded prospectus, shall not inure to the benefit of any Indemnified Person
from whom the Indemnified Person asserting any such Claim purchased the Registrable Securities that are the subject thereof (or to the
benefit of any Indemnified Person controlling such Indemnified Person) if the untrue statement or omission of material fact contained
in the superseded prospectus was corrected in the revised prospectus, as then amended or supplemented, if such revised prospectus was
timely made available by the Company pursuant to Section 3(c) or Section 3(e), and the Indemnified Person was promptly advised in writing
not to use the incorrect prospectus prior to the use giving rise to a violation and such Indemnified Person, notwithstanding such advice,
used it; (iii) shall not be available to the extent such Claim is based on a failure of the Investor to deliver or cause to be delivered
the prospectus made available by the Company, if such prospectus was timely made available by the Company pursuant to Section 3(c) or
Section 3(e); (iv) shall not apply to amounts paid in settlement of any Claim if such settlement is effected without the prior written
consent of the Company, which consent shall not be unreasonably withheld; and (v) shall not apply if and to the extent any Claim arises
due to the gross negligence, fraud or willful misconduct of any Indemnified Person, as determined by a court of competent jurisdiction.
Such indemnity shall remain in full force and effect regardless of any investigation made by or on behalf of the Indemnified Person and
shall survive the transfer of the Registrable Securities by the Investor pursuant to Section 9. Notwithstanding anything to the contrary
in the foregoing, the Investor acknowledges and agrees that no Indemnified Person shall make a claim or proceed against the Trust Account,
including by way of set-off, and shall not be entitled to any funds in the Trust Account under any circumstance. In the event that any
Indemnified Person has a claim against the Company under this Agreement, it will pursue such claim solely against the Company and not
against the property held in the Trust Account.


 






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(b)               
 In connection with the Registration Statement or any New Registration Statement, the Investor agrees to indemnify, hold harmless
and defend, to the same extent and in the same manner as is set forth in Section 6(a), the Company, each of its directors, each of its
officers who signs the Registration Statement or any New Registration Statement, each Person, if any, who controls the Company within
the meaning of the Securities Act or the Exchange Act (collectively and together with an Indemnified Person, an “Indemnified
Party”), against any Claim or Indemnified Damages to which any of them may become subject, under the Securities Act, the Exchange
Act or otherwise, insofar as such Claim or Indemnified Damages arise out of or are based upon any Violation (which, in the case of this
Section 6(b) shall include the failure on the part of the Investor to deliver a prospectus as required by this Agreement and applicable
law), in each case to the extent, and only to the extent, that such Violation occurs in reliance upon and in conformity with written
information about the Investor set forth on Exhibit B attached hereto and furnished to the Company by the Investor expressly for use
in connection with such Registration Statement (it being hereby acknowledged and agreed that such written information, as the same shall
be updated from time to time in writing by the Investor, in connection with the filing of a Registration Statement or any New Registration
Statement (including any amendments or supplements thereto and prospectuses contained therein) to set forth the number of shares of Common
Stock then beneficially owned, is the only written information furnished to the Company by or on behalf of the Investor expressly for
use in any Registration Statement); and, subject to Section 6(d), the Investor will reimburse any reasonable documented and out-of-pocket
legal or other expenses reasonably incurred by them in connection with investigating or defending any such Claim; provided, however,
that the indemnity agreement contained in this Section 6(b) and the agreement with respect to contribution contained in Section 7 shall
not apply to amounts paid in settlement of any Claim if such settlement is effected without the prior written consent of the Investor,
which consent shall not be unreasonably withheld; provided, further, that the Investor shall be liable under this Section
6(b) for only that amount of a Claim or Indemnified Damages as does not exceed the net proceeds to the Investor as a result of the sale
of Registrable Securities pursuant to such Registration Statement. Such indemnity shall remain in full force and effect regardless of
any investigation made by or on behalf of such Indemnified Party and shall survive the transfer of the Registrable Securities by the
Investor pursuant to Section 9.


 


(c)               
Promptly after receipt by an Indemnified Person or Indemnified Party under this Section 6 of notice of the commencement of any
action or proceeding (including any governmental action or proceeding) involving a Claim, such Indemnified Person or Indemnified Party
shall, if a Claim in respect thereof is to be made against any indemnifying party under this Section 6, deliver to the indemnifying party
a written notice of the commencement thereof, and the indemnifying party shall have the right to participate in, and, to the extent the
indemnifying party so desires, jointly with any other indemnifying party similarly notified, to assume control of the defense thereof
with counsel mutually satisfactory to the indemnifying party and the Indemnified Person or the Indemnified Party, as the case may be;
provided, however, that an Indemnified Person or Indemnified Party shall have the right to retain its own counsel with
the fees and expenses to be paid by the indemnifying party, if, in the reasonable opinion of counsel retained by the indemnifying party,
the representation by such counsel of the Indemnified Person or Indemnified Party and the indemnifying party would be inappropriate due
to actual or potential differing interests between such Indemnified Person or Indemnified Party and any other party represented by such
counsel in such proceeding. 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, with advice of counsel, of any Indemnified Person or Indemnified Party, a conflict of
interest may exist between such Indemnified Person or Indemnified Party and any other party represented by such counsel in such proceeding.
The Indemnified Party or Indemnified Person shall cooperate fully with the indemnifying party in connection with any negotiation or defense
of any such action or claim by the indemnifying party and shall furnish to the indemnifying party all information reasonably available
to the Indemnified Party or Indemnified Person which relates to such action or claim. The indemnifying party shall keep the Indemnified
Party or Indemnified Person fully apprised at all times as to the status of the defense or any settlement negotiations with respect thereto.
No indemnifying party shall be liable for any settlement of any action, claim or proceeding effected without its written consent, provided,
however, that the indemnifying party shall not unreasonably withhold, delay or condition its consent. No indemnifying party shall,
without the consent of the Indemnified Party or Indemnified Person, consent to entry of any judgment or enter into any settlement or
other compromise which does not include as an unconditional term thereof the giving by the claimant or plaintiff to such Indemnified
Party or Indemnified Person of a release from all liability in respect to such claim or litigation. Following indemnification as provided
for hereunder, the indemnifying party shall be subrogated to all rights of the Indemnified Party or Indemnified Person with respect to
all third parties, firms or corporations relating to the matter for which indemnification has been made. The failure to deliver written
notice to the indemnifying party within a reasonable time of the commencement of any such action shall not relieve such indemnifying
party of any liability to the Indemnified Person or Indemnified Party under this Section 6, except to the extent that the indemnifying
party is prejudiced in its ability to defend such action.


 






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(d)               
The indemnification required by this Section 6 shall be made by periodic payments of the amount thereof during the course of the
investigation or defense, as and when bills are received or Indemnified Damages are incurred.


 


(e)               
The indemnity agreements contained herein shall be in addition to (i) any cause of action or similar right of the Indemnified
Party or Indemnified Person against the indemnifying party or others, and (ii) any liabilities the indemnifying party may be subject
to pursuant to law.


 


7.             CONTRIBUTION.


 


To the extent any indemnification
by an indemnifying party is prohibited or limited by law, the indemnifying party agrees to make the maximum contribution with respect
to any amounts for which it would otherwise be liable under Section 6 to the fullest extent permitted by law; provided, however,
that: (i) no seller of Registrable Securities guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities
Act) shall be entitled to contribution from any seller of Registrable Securities who was not guilty of fraudulent misrepresentation;
and (ii) contribution by any seller of Registrable Securities shall be limited in amount to the net amount of proceeds received by such
seller from the sale of such Registrable Securities.


 


8.             REPORTS
AND DISCLOSURE UNDER THE SECURITIES ACTS.


 


With a view to making available
to the Investor the benefits of Rule 144 promulgated under the Securities Act or any other similar rule or regulation of the SEC that
may at any time permit the Investor to sell securities of the Company to the public without registration (“Rule 144”),
the Company agrees, at the Company’s sole expense, to:


 


(a)               
make and keep public information available, as those terms are understood and defined in Rule 144;


 


(b)               
file with the SEC in a timely manner all reports and other documents required of the Company under the Securities Act and the
Exchange Act so long as the Company remains subject to such requirements and the filing of such reports and other documents is required
for the applicable provisions of Rule 144;


 


(c)               
furnish to the Investor so long as the Investor owns Registrable Securities, promptly upon reasonable request, (i) a written statement
by the Company that it has complied with the reporting and or disclosure provisions of Rule 144, the Securities Act and the Exchange
Act, (ii) a copy of the most recent annual or quarterly report of the Company and such other reports and documents so filed by the Company,
and (iii) such other information as may be reasonably requested to permit the Investor to sell such securities pursuant to Rule 144 without
registration; and


 






     9


     


    

 


(d)               
take such additional action as is reasonably requested by the Investor to enable the Investor to sell the Registrable Securities
pursuant to Rule 144, including, without limitation, delivering all such legal opinions, consents, certificates, resolutions and instructions
to the Company’s Transfer Agent as may be reasonably requested from time to time by the Investor and otherwise fully cooperate
with the Investor and the Investor’s broker to effect such sale of securities pursuant to Rule 144; provided, however,
that the Investor and its broker shall cooperate with the Company and its counsel and provide the necessary certificates, instructions
and other documents reasonably requested by the Company or its counsel in order to enable the Investor to sell the Registrable Securities
pursuant to Rule 144.


 


The Company agrees that damages
may be an inadequate remedy for any breach of the terms and provisions of this Section 8 and that the Investor shall, whether or not
it is pursuing any remedies at law, be entitled to seek equitable relief in the form of a preliminary or permanent injunction, without
having to post any bond or other security, upon any breach or threatened breach of any such terms or provisions.


 


9.             ASSIGNMENT
OF REGISTRATION RIGHTS.


 


The Company shall not assign
this Agreement or any rights or obligations hereunder without the prior written consent of the Investor; provided, however,
that any transaction, whether by merger, reorganization, restructuring, consolidation, financing or otherwise, whereby the Company remains
the surviving entity immediately after such transaction shall not be deemed an assignment. The Investor may not assign its rights under
this Agreement without the written consent of the Company, other than to an affiliate of the Investor controlled by Jonathan Cope or
Josh Scheinfeld, in which case the assignee must agree in writing to be bound by the terms and conditions of this Agreement.


 


10.           AMENDMENT
OF REGISTRATION RIGHTS.


 


No provision of this Agreement
may be amended or waived by the parties from and after the date that is one (1) Business Day immediately preceding the initial filing
of the Registration Statement with the SEC. Subject to the immediately preceding sentence, no provision of this Agreement may be (i)
amended other than by a written instrument signed by the parties hereto or (ii) waived other than in a written instrument signed by the
party against whom enforcement of such waiver is sought. Failure of any party to exercise any right or remedy under this Agreement or
otherwise, or delay by a party in exercising such right or remedy, shall not operate as a waiver thereof.


 


11.           MISCELLANEOUS.


 


(a)               
A Person is deemed to be a holder of Registrable Securities whenever such Person owns or is deemed to own of record such Registrable
Securities. If the Company receives conflicting instructions, notices or elections from two or more Persons with respect to the same
Registrable Securities, the Company shall act upon the basis of instructions, notice or election received from the registered owner of
such Registrable Securities.


 






     10


     


    

 


(b)               
Any notices, consents, waivers or other communications required or permitted to be given under the terms of this Agreement must
be in writing and will be deemed to have been delivered: (i) upon receipt, when delivered personally; (ii) upon receipt, when sent by
facsimile or email (provided confirmation of transmission is mechanically or electronically generated and kept on file by the sending
party); or (iii) one (1) Business Day after deposit with a nationally recognized overnight delivery service, in each case properly addressed
to the party to receive the same. The addresses for such communications shall be:


 


If to the Company:


	 
	Tailwind
    Acquisition Corp.
	1545
    Courtney Ave
	Los
    Angeles, California 90046
	Attention:
    Chris Hollod
	E-mail:
    chris.hollod@gmail.com
	 
	With a copy
    to (which shall not constitute notice or service of process):
	 
	Willkie
    Farr & Gallagher LLP
	787
    Seventh Avenue
	New
    York, NY 10019
	Attention: 	Adam M. Turteltaub; Danielle Scalzo
	Email: 	aturteltaub@willkie.com; dscalzo@willkie.com
	 
	If to Nuburu:
	 
	Nuburu,
    Inc.
	7442
    Tucson Way, Suite 130
	Centennial,
    CO 80112
	Attention:	Dr. Mark Zediker; Brian Knaley
	Telephone:	720.767.1400
	Email:	Mark.Zediker@nuburu.net; brian.knaley@nuburu.net
	 
	With a copy
    to (which shall not constitute notice or service of process):
	 
	Wilson
    Sonsini Goodrich & Rosati
	650
    Page Mill Road
	Palo
    Alto, CA 94304
	Attention:
    Michael J. Danaher; Brian Dillavou
	Email:
    mdanaher@wsgr.com; bdillavou@wsgr.com
	 
	and with
    a copy to (which shall not constitute notice or service of process):
	 
	Wilson
    Sonsini Goodrich & Rosati
	701
    Fifth Avenue, Suite 5100
	Seattle,
    Washington 98104
	Attention:
    Brendan Ripley Mahan
	Email:
    bmahan@wsgr.com
	 
	If to the
    Investor:
	 
	Lincoln
    Park Capital Fund, LLC
	440
    North Wells, Suite 410
	Chicago,
    IL 60654
	Telephone:	312.822.9300
	Facsimile:	312.822.9301
	Email:	jscheinfeld@lpcfunds.com/jcope@lpcfunds.com
	Attention:	Josh Scheinfeld/Jonathan Cope




 






     11


     


    

 


	With a copy
    to (which shall not constitute notice or service of process):
	 
	K&L
    Gates, LLP
	200
    S. Biscayne Blvd., Ste. 3900
	Miami,
    Florida 33131
	Telephone:	305.539.3306
	Facsimile:	305.358.7095
	Email:	clayton.parker@klgates.com
	Attention:	Clayton E. Parker, Esq.
	 
	If to the
    Transfer Agent:
	 
	Continental
    Stock Transfer & Trust Company
	One
    State Street, 30th Floor
	New
    York, New York 10004
	Attention:	Francis Wolf & Celeste Gonzalez
	Email:	fwolf@continentalstock.com; cgonzalez@continentalstock.com




 


or at such other address, email address and/or
facsimile number and/or to the attention of such other person as the recipient party has specified by written notice given to each other
party three (3) Business Days prior to the effectiveness of such change. Written confirmation of receipt (A) given by the recipient of
such notice, consent, waiver or other communication, (B) mechanically or electronically generated by the sender’s facsimile machine
or email account containing the time, date, recipient facsimile number or email address, as applicable, or (C) provided by a nationally
recognized overnight delivery service, shall be rebuttable evidence of personal service, receipt by facsimile, email or receipt from
a nationally recognized overnight delivery service in accordance with clause (i), (ii) or (iii) above, respectively.


 


(c)               
The corporate laws of the State of Delaware shall govern all issues concerning the relative rights of the Company and its stockholders.
All other questions concerning the construction, validity, enforcement and interpretation of this Agreement shall be governed by the
internal laws of the State of New York, without giving effect to any choice of law or conflict of law provision or rule (whether of the
State of New York or any other jurisdictions) that would cause the application of the laws of any jurisdictions other than the State
of New York. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the State
of New York, Borough of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated
hereby or discussed herein, and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that
it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient
forum or that the venue of such suit, action or proceeding is improper. Each party hereby irrevocably waives personal service of process
and consents to process being served in any such suit, action or proceeding by mailing a copy thereof to such party at the address for
such notices to it under this Agreement and agrees that such service shall constitute good and sufficient service of process and notice
thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. If any
provision of this Agreement shall be invalid or unenforceable in any jurisdiction, such invalidity or unenforceability shall not affect
the validity or enforceability of the remainder of this Agreement in that jurisdiction or the validity or enforceability of any provision
of this Agreement in any other jurisdiction. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST,
A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION HEREWITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION
CONTEMPLATED HEREBY.


 






     12


     


    

 


(d)               
This Agreement and the Purchase Agreement constitute the entire agreement among the parties hereto with respect to the subject
matter hereof and thereof. There are no restrictions, promises, warranties or undertakings among the parties hereto, other than those
set forth or referred to herein and therein. This Agreement and the Purchase Agreement supersede all prior agreements and understandings
among the parties hereto with respect to the subject matter hereof and thereof.


 


(e)               
This Agreement is intended for the benefit of the parties hereto and any permitted successors and assigns and, except as set forth
in Section 9, is not for the benefit of, nor may any provision hereof be enforced by, any other Person.


 


(f)                
The headings in this Agreement are for convenience of reference only and shall not limit or otherwise affect the meaning hereof.


 


(g)               
This Agreement may be executed in identical counterparts, each of which shall be deemed an original but all of which shall constitute
one and the same agreement. This Agreement, once executed by a party, may be delivered to the other parties hereto by facsimile transmission
or by email in a “.pdf” format data file of a copy of this Agreement bearing the signature of the party so delivering this
Agreement.


 


(h)               
Each party shall do and perform, or cause to be done and performed, all such further acts and things, and shall execute and deliver
all such other agreements, certificates, instruments and documents, as the other party may reasonably request in order to carry out the
intent and accomplish the purposes of this Agreement and the consummation of the transactions contemplated hereby.


 


(i)                
The language used in this Agreement will be deemed to be the language chosen by the parties to express their mutual intent and
no rules of strict construction will be applied against any party.


 


(j)                
This Agreement is intended for the benefit of the parties hereto and their respective successors and permitted assigns, and is
not for the benefit of, nor may any provision hereof be enforced by, any other Person.


 


[Signature Pages Follow]


 






     13


     


    

 


IN WITNESS WHEREOF,
the parties have caused this Registration Rights Agreement to be duly executed as of day and year first above written.


 


	 	THE COMPANY:
	 	 
	 	TAILWIND ACQUISITION CORP.
	 	 
	 	By:	/s/ Chris Hollod
	 	Name:	Chris Hollod
	 	Title:	Chief Executive Officer




 


[Signature page to Registration
Rights Agreement] 


 






     


     


    

 


	 	NUBURU:
	 	 
	 	NUBURU, INC.
	 	 
	 	By:	/s/ Mark Zediker
	 	Name:	Mark Zediker
	 	Title:	Chief Executive Officer




 
[Signature
                                            page to Registration Rights Agreement] 


 






     


     


    

 


	 	BUYER:
	 	 
	 	LINCOLN PARK CAPITAL FUND, LLC
	 	BY: LINCOLN PARK CAPITAL, LLC
	 	BY:
    Rockledge Capital Corporation
	 	  
	 	By:	/s/ Josh Scheinfeld
	 	Name: 	Josh Scheinfeld
	 	Title:	 President




 
[Signature
                                            page to Registration Rights Agreement] 



 






     


     


    

 


Exhibit
A


 


TO REGISTRATION RIGHTS
AGREEMENT


 


FORM OF NOTICE OF EFFECTIVENESS


OF REGISTRATION STATEMENT


 


[Date]


 


[TRANSFER AGENT]


___________________


___________________


 


Re: [__________]


  


Ladies and Gentlemen:


 


Reference is hereby made
to that certain Purchase Agreement, dated as of August [●], 2022 (the “Purchase Agreement”), entered into
by and between Nuburu, Inc. (f/k/a Tailwind Acquisition Corp.), a Delaware corporation (the “Company”), and Lincoln
Park Capital Fund, LLC (the “Buyer”) pursuant to which, among other things, the Company has agreed following the Closing
(as defined in the Purchase Agreement) to issue to the Buyer shares of the Company’s Common Stock, par value $0.0001 per share
(the “Common Stock”), in an amount up to one hundred million dollars ($100,000,000), in accordance with the terms
of the Purchase Agreement. In connection with the transactions contemplated by the Purchase Agreement, the Company has registered with
the U.S. Securities and Exchange Commission (the “SEC”) [__________] shares of Common Stock that may be issued and
sold by the Company to the Buyer from time to time (the “Purchase Shares”) and [___________] shares of Common Stock
as Commitment Shares (the “Commitment Shares”).


 


We are counsel to the Company,
and this letter is being delivered pursuant to that certain Registration Rights Agreement, dated as of August [●], 2022, entered
into by and between the Company and the Buyer (the “Registration Rights Agreement”) pursuant to which the Company
agreed, among other things, to register the Purchase Shares and the Commitment Shares under the Securities Act of 1933, as amended (the
 “Securities Act”).


 


In connection with the Company’s
obligations under the Purchase Agreement and the Registration Rights Agreement, on [_____________], 20[__], the Company filed a Registration
Statement (File No. 333-[_________]) (the “Registration Statement”) with the SEC relating to the resale of the
Purchase Shares and the Commitment Shares by the Buyer.


 


In connection with the foregoing,
we advise you that a member of the SEC’s staff has advised us by telephone that the SEC has entered an order declaring the Registration
Statement effective under the Securities Act at __:__ am/pm on _______ __, 2022, and we have no knowledge, based solely on our review
of the SEC’s “Stop Orders” web page (http://sec.gov/litigation/stoporders.shtml), that any stop order suspending
the Registration Statement’s effectiveness has been issued or that any proceedings for that purpose are pending before, or threatened
by, the SEC.


 


	 	Very truly yours,
	 	 
	 	[Company Counsel]
	 	 







	 	By:	 
	 
	cc:          Lincoln Park Capital
    Fund, LLC	 


 


 






     


     


    

 


Exhibit
B


 


TO REGISTRATION RIGHTS
AGREEMENT


 


Information About The Investor Furnished To
The Company By The Investor 


Expressly For Use In Connection With The
Registration Statement


 


Information With Respect to Lincoln Park Capital


 


As of the date of the Purchase Agreement, Lincoln
Park Capital Fund, LLC, beneficially owned zero shares of common stock of the Company. Josh Scheinfeld and Jonathan Cope, the Managing
Members of Lincoln Park Capital, LLC, the manager of Lincoln Park Capital Fund, LLC, are deemed to be beneficial owners of all of the
common stock owned by Lincoln Park Capital Fund, LLC. Messrs. Cope and Scheinfeld have shared voting and investment power over the shares
being offered under the prospectus filed with the SEC in connection with the transactions contemplated under the Purchase Agreement.
Lincoln Park Capital, LLC is not a licensed broker dealer or an affiliate of a licensed broker dealer.