Sec Form 3 Filing - Rodriguez Antonio L. @ Markforged Holding Corp - 2021-07-14

FORM 3 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 Rodriguez Antonio L. 2. Issuer Name and Ticker or Trading Symbol Markforged Holding Corp [ MKFG] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O MATRIX PARTNERS, 101 MAIN STREET, 17TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 07/14/2021 (Street) CAMBRIDGE, MA02451 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 Common Stock 28,495,912 I See footnote ( 1 ) Common Stock 1,424,197 I See footnote ( 2 )

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 Earnout Shares $ 0 ( 3 ) 07/14/2021 Common Stock 2,576,215 I See footnote ( 1 ) Earnout Shares $ 0 ( 4 ) 07/14/2021 Common Stock 128,755 I See footnote ( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Rodriguez Antonio L. C/O MATRIX PARTNERS 101 MAIN STREET, 17TH FLOOR CAMBRIDGE, MA02451 X Signatures /s/ Stephen Karp, Attorney-in-Fact for Antonio Rodriguez 07/14/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These shares are held directly by Matrix Partners IX, L.P. ("Matrix"). Antonio Rodriguez is a member of the board of directors of the Issuer and a managing member of Matrix IX Management Co., L.L.C. ("Matrix IX MC"), the general partner of Matrix. As a managing member of Matrix IX MC, Mr. Rodriguez has sole voting and dispositive power with respect to these shares. Mr. Rodriguez disclaims beneficial ownership of these shares except to the extent of his pecuniary interest. ( 2 )These shares are held by Weston & Co. IX LLC ("Weston IX"), as nominee for Matrix Partners Management Services, L.P. Mr. Rodriguez is a member of the board of directors of the Issuer and by virtue of his management position at Matrix Partners Management Services, L.P. has sole voting and dispositive power with respect to these shares. Mr. Rodriguez disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. ( 3 )On July 14, 2021 (the "Closing Date") one, the Issuer's predecessor, consummated the business combination (the "Business Combination") pursuant to the terms of the merger agreement dated as of February 23, 2021 by and among one, Caspian Merger Sub Inc., a Delaware corporation and MarkForged, Inc., a Delaware corporation. On the Closing Date, Matrix received the right to acquire 2,576,215 shares of the Issuer's Common Stock in connection with the Business Combination, (i) 1,405,208 of which will be released from escrow if the value weighted average price ("VWAP") for at least 20 of any 30 consecutive trading days following the Closing Date is at least $12.50; and (ii) 1,171,007 of which will be released from such escrow if the VWAP for at least 20 of any 30 consecutive trading days following the Closing Date is at least $15.00. Any shares not eligible to be released within five years of the Closing Date will be forfeited and canceled. ( 4 )On the Closing Date, Weston, received the right to acquire 128,755 shares of the Issuer's Common Stock in connection with the Business Combination, (i) 70,230 of which will be released from escrow if the VWAP for at least 20 of any 30 consecutive trading days following the Closing Date is at least $12.50; and (ii) 58,525 of which will be released from such escrow if the VWAP for at least 20 of any 30 consecutive trading days following the Closing Date is at least $15.00. Any shares not eligible to be released within five years of the Closing Date will be forfeited and canceled.

Remarks: Exhibit 24: Power of Attorney

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