Sec Form 4 Filing - Knaley Brian @ Nuburu, Inc. - 2023-01-31

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Knaley Brian 2. Issuer Name and Ticker or Trading Symbol Nuburu, Inc. [ BURU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O NUBURU, INC., 7442 S TUCSON WAY, SUITE 130 3. Date of Earliest Transaction (MM/DD/YY) 01/31/2023 (Street) CENTENNIAL, CO80112 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (right to buy) $ 6.12 01/31/2023 A( 1 ) 345,314 02/21/2023( 2 ) 03/16/2032 Common Stock 345,314 ( 3 ) 345,314 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Knaley Brian C/O NUBURU, INC. 7442 S TUCSON WAY, SUITE 130 CENTENNIAL, CO80112 Chief Financial Officer Signatures /s/ Brian Knaley 02/02/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Consists of securities acquired in connection with the transactions consummated on January 31, 2023 pursuant to that certain Business Combination Agreement, dated August 5, 2022 (as it has been and may be amended, supplemented or otherwise modified from time to time, the "Business Combination Agreement"), by and among Nuburu, Inc. (f/k/a Tailwind Acquisition Corp.) (the "Issuer"), Compass Merger Sub, Inc., a wholly owned subsidiary of the Issuer ("Merger Sub"), and Nuburu Subsidiary, Inc. ("Legacy Nuburu"), pursuant to which Merger Sub merged with and into Legacy Nuburu, with Legacy Nuburu as the surviving company and continuing as a wholly owned subsidiary of the Issuer (the "Business Combination"). ( 2 )1/4th of the total shares will vest on the Exercisable Date set forth above and 1/48th will vest each month thereafter on the same day of the month subject to Mr. Knaley remaining employed as the Issuer's Chief Financial Officer through the applicable vesting date. ( 3 )In connection with the closing of the Business Combination, each outstanding option to purchase shares of Legacy Nuburu, whether vested or unvested, was exchanged for comparable options to purchase Common Stock based on an exchange ratio calculated at closing.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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