MKFG Markforged Holding Corporation

The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

NAMES OF REPORTING PERSONS

North Bridge Venture Management 7, L.P.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a) ☐  (b) ☒

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

29,126,742 (1)(2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

29,126,742 (1)(2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

29,126,742 (1)(2)

CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

14.7% (3)

TYPE OF REPORTING PERSON (see instructions)

PN

All such shares are held of record by NBVP 7 (as defined in Item 2(a) of the Original Schedule 13G (as defined in the Introductory Note below)). NBVM 7 (as defined in Item 2(a) of the Original Schedule 13G) is the general partner of NBVP 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. NBVM GP (as defined in item 2(a) of the Original Schedule G) is the general partner of NBVM 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. Edward T. Anderson and Richard A. D’Amore are the managers of NBVM GP and may each be deemed to share voting, investment and dispositive power with respect to these securities.

Excludes 2,633,246 Earnout Shares that will be released from escrow upon certain conditions set forth in the Merger Agreement (as defined in the Original Schedule 13G).

Based on 198,415,076 shares of Common Stock outstanding as of November 13, 2023, as reported by the Issuer in its Form 10-Q for the quarter ended September 30, 2023, filed with the United States Securities and Exchange Commission on November 13, 2023 (the “Form 10-Q”).

NAMES OF REPORTING PERSONS

NBVM GP, LLC

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a) ☐  (b) ☒

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

29,126,742 (1)(2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

29,126,742 (1)(2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

29,126,742 (1)(2)

CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

14.7% (3)

TYPE OF REPORTING PERSON (see instructions)

OO

All such shares are held of record by NBVP 7 (as defined in Item 2(a) of the Original Schedule 13G). NBVM 7 (as defined in Item 2(a) of the Original Schedule 13G) is the general partner of NBVP 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. NBVM GP (as defined in item 2(a) of the Original Schedule 13G) is the general partner of NBVM 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. Edward T. Anderson and Richard A. D’Amore are the managers of NBVM GP and may each be deemed to share voting, investment and dispositive power with respect to these securities.

Excludes 2,633,246 Earnout Shares that will be release from escrow upon certain conditions set forth in the Merger Agreement.

Based on 198,415,076 shares of Common Stock outstanding as of November 13, 2023, as reported by the Issuer in the Form 10-Q.

NAMES OF REPORTING PERSONS

North Bridge Venture Partners 7, L.P.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a) ☐  (b) ☒

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

29,126,742 (1)(2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

29,126,742 (1)(2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

29,126,742 (1)(2)

CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

14.7% (3)

TYPE OF REPORTING PERSON (see instructions)

PN

All such shares are held of record by NBVP 7 (as defined in Item 2(a) of the Original Schedule 13G). NBVM 7 (as defined in Item 2(a) of the Original Schedule 13G) is the general partner of NBVP 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. NBVM GP (as defined in item 2(a) of the Original Schedule 13G) is the general partner of NBVM 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. Edward T. Anderson and Richard A. D’Amore are the managers of NBVM GP and may each be deemed to share voting, investment and dispositive power with respect to these securities.

Excludes 2,633,246 Earnout Shares that will be release from escrow upon certain conditions set forth in the Merger Agreement.

Based on 198,415,076 shares of Common Stock outstanding as of November 13, 2023, as reported by the Issuer in the Form 10-Q.

NAMES OF REPORTING PERSONS

Edward T. Anderson

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a) ☐  (b) ☒

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

United States of America

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON

WITH

SOLE VOTING POWER

67,873 (1)

SHARED VOTING POWER

29,126,742 (2)(3)

SOLE DISPOSITIVE POWER

67,873 (1)

SHARED DISPOSITIVE POWER

29,126,742 (2)(3)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

29,194,615 (1)(2)(3)

CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

14.7% (4)

TYPE OF REPORTING PERSON (see instructions)

IN

Consists of 67,873 shares of Common Stock held directly by Mr. Anderson. Excludes 136,364 restricted stock units (“RSUs”), granted to Edward T. Anderson which are not vested, nor exercisable within 60 days of this Statement.

Consists of 29,126,742 shares held of record by NBVP 7 (as defined in Item 2(a) of the Original Schedule 13G). NBVM 7 (as defined in Item 2(a) of the Original Schedule 13G) is the general partner of NBVP 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. NBVM GP (as defined in item 2(a) of the Original Schedule 13G) is the general partner of NBVM 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. Edward T. Anderson and Richard A. D’Amore are the managers of NBVM GP and may each be deemed to share voting, investment and dispositive power with respect to these securities.

Excludes 2,633,246 Earnout Shares that will be release from escrow upon certain conditions set forth in the Merger Agreement.

Based on 198,415,076 shares of Common Stock outstanding as of November 13, 2023, as reported by the Issuer in the Form 10-Q.

NAMES OF REPORTING PERSONS

Richard A. D’Amore

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (see instructions)

(a) ☐  (b) ☒

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

United States of America

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

29,126,742 (1)(2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

29,126,742 (1)(2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

29,126,742 (1)(2)

CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (see instructions)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

14.7% (3)

TYPE OF REPORTING PERSON (see instructions)

IN

All such shares are held of record by NBVP 7 (as defined in Item 2(a) of the Original Schedule 13G). NBVM 7 (as defined in Item 2(a) of the Original Schedule 13G) is the general partner of NBVP 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. NBVM GP (as defined in item 2(a) of the Original Schedule 13G) is the general partner of NBVM 7 and may be deemed to have voting, investment and dispositive power with respect to these securities. Edward T. Anderson and Richard A. D’Amore are the managers of NBVM GP and may each be deemed to share voting, investment and dispositive power with respect to these securities.

Excludes 2,633,246 Earnout Shares that will be release from escrow upon certain conditions set forth in the Merger Agreement.

Based on 198,415,076 shares of Common Stock outstanding as of November 13, 2023, as reported by the Issuer in the Form 10-Q.

Address of Issuer’s Principal Executive Offices:

Address of Principal Business Office, or if None, Residence:

Ownership.

Amount beneficially owned:

Percent of class:

Number of shares as to which the person has:

Sole power to vote or to direct the vote

Shared power to vote or to direct the vote

Sole power to dispose or to direct the disposition of

Shared power to dispose or to direct the disposition of

Except to the extent of his or its pecuniary interest therein, each Reporting Person disclaims beneficial ownership of such shares of Common Stock, except for the shares, if any, such Reporting Person holds of record.