XMTR

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 13

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Noah Sladkin Altschuler 2012 Trust

Disclosed balance after: 342,425

F12 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by The Noah Sladkin Altschuler 2012 Trust Trust at least 14 days prior to the trading date.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.32 to $33.86, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 12

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Matthew Sladkin Altschuler 2012 Trust

Disclosed balance after: 337,818

F10 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by The Matthew Sladkin Altschuler 2012 Trust at least 14 days prior to the trading date.

F11 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.48 to $36.02, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 11

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Matthew Sladkin Altschuler 2012 Trust

Disclosed balance after: 338,429

F10 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by The Matthew Sladkin Altschuler 2012 Trust at least 14 days prior to the trading date.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.48 to $35.40, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 10

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by The Matthew Sladkin Altschuler 2012 Trust

Disclosed balance after: 339,674

F10 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by The Matthew Sladkin Altschuler 2012 Trust at least 14 days prior to the trading date.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.32 to $34.30, inclusive. The reporting person undertakes to provide to Xometry, Inc., any security holder of Xometry, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price in the ranges set forth in footnotes (2), (3), (4), (6), (7), (9), (11), (13), (14), (16) and (17) to this Form 4.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 9

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by the 2021 Tigers Trust

Disclosed balance after: 101,582

F8 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by the 2021 Tigers Trust at least 14 days prior to the trading date.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.48 to $36.29, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 8

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by the 2021 Tigers Trust

Disclosed balance after: 102,150

F8 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by the 2021 Tigers Trust at least 14 days prior to the trading date.

F9 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.48 to $35.40, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 7

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by the 2021 Tigers Trust

Disclosed balance after: 103,487

F8 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by the 2021 Tigers Trust at least 14 days prior to the trading date.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.32 to $33.86, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 6

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by the Altschuler Family Trust (2020)

Disclosed balance after: 491,248

F5 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by The Altschuler Family Trust (2020) at least 14 days prior to the trading date.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.48 to $36.29, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 5

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by the Altschuler Family Trust (2020)

Disclosed balance after: 491,665

F5 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by The Altschuler Family Trust (2020) at least 14 days prior to the trading date.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.48 to $35.41, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 4

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by the Altschuler Family Trust (2020)

Disclosed balance after: 493,138

F5 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by The Altschuler Family Trust (2020) at least 14 days prior to the trading date.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.32 to $33.86, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 3

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by spouse

Disclosed balance after: 711,270

F1 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by the reporting person's spouse, at least 14 days prior to the trading date.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.48 to $36.29, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 2

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by spouse

Disclosed balance after: 713,741

F1 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by the reporting person's spouse, at least 14 days prior to the trading date.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.48 to $35.44, inclusive.

SEC source: 0001562180-22-005069 · primarydocument.xml · nonDerivative · entry 1

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · Held by spouse

Disclosed balance after: 720,844

F1 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b-5 trading plan adopted by the reporting person's spouse, at least 14 days prior to the trading date.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.32 to $34.30, inclusive. The reporting person undertakes to provide to Xometry, Inc., any security holder of Xometry, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price in the ranges set forth in footnotes (2), (3), (4), (6), (7), (9), (11), (13), (14), (16) and (17) to this Form 4.

SEC source: 0001562180-22-005081 · primarydocument.xml · nonDerivative · entry 1

Mayerhofer Kathy · CIK 0001869940 · Chief Sales Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,723

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.3221 to $35.6225, inclusive. The reporting person undertakes to provide to Xometry, Inc., any security holder of Xometry, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this price range.

SEC source: 0001562180-22-004839 · primarydocument.xml · nonDerivative · entry 2

HORNIG GEORGE · CIK 0001275810 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 124,851

F1 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person at least 14 days prior to the trading date.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $32.875 to $33.32, inclusive.

SEC source: 0001562180-22-004839 · primarydocument.xml · nonDerivative · entry 1

HORNIG GEORGE · CIK 0001275810 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,723

F1 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person at least 14 days prior to the trading date.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.87 to $32.82, inclusive. The reporting person undertakes to provide to Xometry, Inc., any security holder of Xometry, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4.

SEC source: 0000899243-22-020729 · doc4.xml · nonDerivative · entry 5

Driscoll Craig · CIK 0001869943 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 671

F7 · kind: Represents a change in the form of ownership of the Reporting Person by virtue of receipt of shares as a result of a pro-rata in-kind distribution by Highland Management Partners 9 Limited Partnership ("HMP 9 LP"). The Reporting Person is a limited partner of HMP 9 LP but does not share voting, investment or dispositive power with respect to securities held by HMP 9 LP or the investment funds for which HMP 9 LP serves as general partner.

SEC source: 0000899243-22-020729 · doc4.xml · nonDerivative · entry 4

Driscoll Craig · CIK 0001869943 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162

F6 · kind: Represents a change in the form of ownership of the Reporting Person by virtue of receipt of shares as a result of a pro-rata in-kind distribution by HLF I GP LP.

SEC source: 0000899243-22-020729 · doc4.xml · nonDerivative · entry 3

Driscoll Craig · CIK 0001869943 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F5 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by HLF I GP LP to its partners.

F4 · ownership.nature: These shares are held by HLF I GP LP. The general partner of HLF I GP LP is HLF I GP LLC. The Reporting Person is a managing member of HLF I GP LLC and may be deemed to have voting and dispositive power over the shares held by HLF I GP LP. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0000899243-22-020729 · doc4.xml · nonDerivative · entry 2

Driscoll Craig · CIK 0001869943 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,624

F3 · kind: Represents a change in the form of ownership of HLF I GP LP by virtue of the receipt of shares in the pro-rata in-kind distribution of Class A Common Stock of the Issuer for no consideration by HLF I.

F4 · ownership.nature: These shares are held by HLF I GP LP. The general partner of HLF I GP LP is HLF I GP LLC. The Reporting Person is a managing member of HLF I GP LLC and may be deemed to have voting and dispositive power over the shares held by HLF I GP LP. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0000899243-22-020729 · doc4.xml · nonDerivative · entry 1

Driscoll Craig · CIK 0001869943 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 360,644

F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Highland Leaders Fund I, L.P. ("HLF I") to its partners.

F2 · ownership.nature: These shares are held of record by HLF I. The general partner of HLF I is Highland Leaders Fund I GP, L.P. ("HLF I GP LP"), whose general partner is Highland Leaders Fund I GP, LLC ("HLF I GP LLC"). The Reporting Person is a managing member of HLF I GP LLC and may be deemed to have voting and dispositive power over the shares held by HLF I. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0000899243-22-020731 · doc4.xml · nonDerivative · entry 8

Highland Leaders Fund I, L.P. · CIK 0001794347 · 10% owner

Highland Capital Partners 9 Limited Partnership · CIK 0001573958 · 10% owner

Highland Capital Partners 9-B Limited Partnership · CIK 0001573963 · 10% owner

Highland Management Partners 9 LLC · CIK 0001870731 · 10% owner

HIghland Management Partners 9 Limited Partnership · CIK 0001870729 · 10% owner

Highland Entrepreneurs' Fund 9 Limited Partnership · CIK 0001574027 · 10% owner

Highland Leaders Fund I GP, L.P. · CIK 0001871228 · 10% owner

Highland Leaders Fund I GP, LLC · CIK 0001871227 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F12 · kind: Represents a pro-rata distribution, and not a purchase and sale, without additional consideration, by HMP 9 LP to its partners.

F11 · ownership.nature: These shares are held by HMP 9 LP. The general partner of HMP 9 LP is HMP 9 LLC. The HMP9 Managing Members are the managing members of HMP 9 LLC. Each of the HMP9 Managing Members disclaims beneficial ownership of the securities reported herein, except to the extent of their respective pecuniary interests therein, if any, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any of them is the beneficial owner of any securities reported herein.

SEC source: 0000899243-22-020731 · doc4.xml · nonDerivative · entry 7

Highland Leaders Fund I, L.P. · CIK 0001794347 · 10% owner

Highland Capital Partners 9 Limited Partnership · CIK 0001573958 · 10% owner

Highland Capital Partners 9-B Limited Partnership · CIK 0001573963 · 10% owner

Highland Management Partners 9 LLC · CIK 0001870731 · 10% owner

HIghland Management Partners 9 Limited Partnership · CIK 0001870729 · 10% owner

Highland Entrepreneurs' Fund 9 Limited Partnership · CIK 0001574027 · 10% owner

Highland Leaders Fund I GP, L.P. · CIK 0001871228 · 10% owner

Highland Leaders Fund I GP, LLC · CIK 0001871227 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 34,481

F10 · kind: Represents a change in the form of ownership of HMP 9 LP by virtue of the receipt of shares in the pro-rata in-kind distribution of Class A Common Stock of the Issuer for no consideration by each of HCP9, HC9B and HEF9. HMP 9 LP received (i) 22,714 of such shares in the pro-rata in-kind distribution made by HCP9, (ii) 9,784 of such shares in the pro-rata in-kind distribution made by HCP9B and (iii) 1,983 of such shares in the pro-rata in-kind distribution made by HEF9.

F11 · ownership.nature: These shares are held by HMP 9 LP. The general partner of HMP 9 LP is HMP 9 LLC. The HMP9 Managing Members are the managing members of HMP 9 LLC. Each of the HMP9 Managing Members disclaims beneficial ownership of the securities reported herein, except to the extent of their respective pecuniary interests therein, if any, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any of them is the beneficial owner of any securities reported herein.

SEC source: 0000899243-22-020731 · doc4.xml · nonDerivative · entry 6

Highland Leaders Fund I, L.P. · CIK 0001794347 · 10% owner

Highland Capital Partners 9 Limited Partnership · CIK 0001573958 · 10% owner

Highland Capital Partners 9-B Limited Partnership · CIK 0001573963 · 10% owner

Highland Management Partners 9 LLC · CIK 0001870731 · 10% owner

HIghland Management Partners 9 Limited Partnership · CIK 0001870729 · 10% owner

Highland Entrepreneurs' Fund 9 Limited Partnership · CIK 0001574027 · 10% owner

Highland Leaders Fund I GP, L.P. · CIK 0001871228 · 10% owner

Highland Leaders Fund I GP, LLC · CIK 0001871227 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 236,792

F6 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration, by each of Highland Capital Partners 9 Limited Partnership ("HCP9"), Highland Capital Partners 9-B Limited Partnership ("HCP9B") and Highland Entrepreneurs' Fund 9 Limited Partnership ("HEF9"), as applicable, to its partners.

F9 · ownership.nature: These shares are held of record by HEF9. The general partner of HEF9 is HMP 9 LP, whose general partner is HMP 9 LLC. The HMP9 Managing Members are the managing members of HMP 9 LLC and may be deemed to have voting and dispositive power over the shares held by HEF9. Each of HMP 9 LP, HMP 9 LLC and the HMP9 Managing Members disclaims beneficial ownership of the securities reported herein, except to the extent of their respective pecuniary interests therein, if any, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any of them is the beneficial owner of any securities reported herein.

SEC source: 0000899243-22-020731 · doc4.xml · nonDerivative · entry 5

Highland Leaders Fund I, L.P. · CIK 0001794347 · 10% owner

Highland Capital Partners 9 Limited Partnership · CIK 0001573958 · 10% owner

Highland Capital Partners 9-B Limited Partnership · CIK 0001573963 · 10% owner

Highland Management Partners 9 LLC · CIK 0001870731 · 10% owner

HIghland Management Partners 9 Limited Partnership · CIK 0001870729 · 10% owner

Highland Entrepreneurs' Fund 9 Limited Partnership · CIK 0001574027 · 10% owner

Highland Leaders Fund I GP, L.P. · CIK 0001871228 · 10% owner

Highland Leaders Fund I GP, LLC · CIK 0001871227 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,168,524

F6 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration, by each of Highland Capital Partners 9 Limited Partnership ("HCP9"), Highland Capital Partners 9-B Limited Partnership ("HCP9B") and Highland Entrepreneurs' Fund 9 Limited Partnership ("HEF9"), as applicable, to its partners.

F8 · ownership.nature: These shares are held of record by HCP9B. The general partner of HCP9B is HMP 9 LP, whose general partner is HMP 9 LLC. The HMP9 Managing Members are the managing members of HMP 9 LLC and may be deemed to have voting and dispositive power over the shares held by HCP9B. Each of HMP 9 LP, HMP 9 LLC and the HMP9 Managing Members disclaims beneficial ownership of the securities reported herein, except to the extent of their respective pecuniary interests therein, if any, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any of them is the beneficial owner of any securities reported herein.

SEC source: 0000899243-22-020731 · doc4.xml · nonDerivative · entry 4

Highland Leaders Fund I, L.P. · CIK 0001794347 · 10% owner

Highland Capital Partners 9 Limited Partnership · CIK 0001573958 · 10% owner

Highland Capital Partners 9-B Limited Partnership · CIK 0001573963 · 10% owner

Highland Management Partners 9 LLC · CIK 0001870731 · 10% owner

HIghland Management Partners 9 Limited Partnership · CIK 0001870729 · 10% owner

Highland Entrepreneurs' Fund 9 Limited Partnership · CIK 0001574027 · 10% owner

Highland Leaders Fund I GP, L.P. · CIK 0001871228 · 10% owner

Highland Leaders Fund I GP, LLC · CIK 0001871227 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,712,833

F6 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration, by each of Highland Capital Partners 9 Limited Partnership ("HCP9"), Highland Capital Partners 9-B Limited Partnership ("HCP9B") and Highland Entrepreneurs' Fund 9 Limited Partnership ("HEF9"), as applicable, to its partners.

F7 · ownership.nature: These shares are held of record by HCP9. The general partner of HCP9 is Highland Management Partners 9 Limited Partnership ("HMP 9 LP"),whose general partner is Highland Management Partners 9 LLC ("HMP 9 LLC"). Robert Davis, Dan Nova, Paul Maeder and Corey Mulloy ("HMP9 Managing Members") are the managing members of HMP 9 LLC and may be deemed to have voting and dispositive power over the shares held by HCP9. Each of HMP 9 LP, HMP 9 LLC and the HMP9 Managing Members disclaims beneficial ownership of the securities reported herein, except to the extent of their respective pecuniary interests therein, if any, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any of them is the beneficial owner of any securities reported herein.

SEC source: 0000899243-22-020731 · doc4.xml · nonDerivative · entry 3

Highland Leaders Fund I, L.P. · CIK 0001794347 · 10% owner

Highland Capital Partners 9 Limited Partnership · CIK 0001573958 · 10% owner

Highland Capital Partners 9-B Limited Partnership · CIK 0001573963 · 10% owner

Highland Management Partners 9 LLC · CIK 0001870731 · 10% owner

HIghland Management Partners 9 Limited Partnership · CIK 0001870729 · 10% owner

Highland Entrepreneurs' Fund 9 Limited Partnership · CIK 0001574027 · 10% owner

Highland Leaders Fund I GP, L.P. · CIK 0001871228 · 10% owner

Highland Leaders Fund I GP, LLC · CIK 0001871227 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

F5 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by HLF I GP LP to its partners.

F4 · ownership.nature: These shares are held by HLF I GP LP. The general partner of HLF I GP LP is HLF I GP LLC. The HLF I GP Managing Members are the managing members of HLF I GP LLC. HLF I GP LLC and each of the HLF I GP Managing Members disclaims beneficial ownership of the securities reported herein, except to the extent of their respective pecuniary interests therein, if any, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any of them is the beneficial owner of any securities reported herein. Mr. Driscoll is a director of the Issuer and files separate Section 16 reports.

SEC source: 0000899243-22-020731 · doc4.xml · nonDerivative · entry 2

Highland Leaders Fund I, L.P. · CIK 0001794347 · 10% owner

Highland Capital Partners 9 Limited Partnership · CIK 0001573958 · 10% owner

Highland Capital Partners 9-B Limited Partnership · CIK 0001573963 · 10% owner

Highland Management Partners 9 LLC · CIK 0001870731 · 10% owner

HIghland Management Partners 9 Limited Partnership · CIK 0001870729 · 10% owner

Highland Entrepreneurs' Fund 9 Limited Partnership · CIK 0001574027 · 10% owner

Highland Leaders Fund I GP, L.P. · CIK 0001871228 · 10% owner

Highland Leaders Fund I GP, LLC · CIK 0001871227 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,624

F3 · kind: Represents a change in the form of ownership of HLF I GP LP by virtue of the receipt of shares in the pro-rata in-kind distribution of Class A Common Stock of the Issuer for no consideration by HLF I.

F4 · ownership.nature: These shares are held by HLF I GP LP. The general partner of HLF I GP LP is HLF I GP LLC. The HLF I GP Managing Members are the managing members of HLF I GP LLC. HLF I GP LLC and each of the HLF I GP Managing Members disclaims beneficial ownership of the securities reported herein, except to the extent of their respective pecuniary interests therein, if any, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any of them is the beneficial owner of any securities reported herein. Mr. Driscoll is a director of the Issuer and files separate Section 16 reports.

SEC source: 0000899243-22-020731 · doc4.xml · nonDerivative · entry 1

Highland Leaders Fund I, L.P. · CIK 0001794347 · 10% owner

Highland Capital Partners 9 Limited Partnership · CIK 0001573958 · 10% owner

Highland Capital Partners 9-B Limited Partnership · CIK 0001573963 · 10% owner

Highland Management Partners 9 LLC · CIK 0001870731 · 10% owner

HIghland Management Partners 9 Limited Partnership · CIK 0001870729 · 10% owner

Highland Entrepreneurs' Fund 9 Limited Partnership · CIK 0001574027 · 10% owner

Highland Leaders Fund I GP, L.P. · CIK 0001871228 · 10% owner

Highland Leaders Fund I GP, LLC · CIK 0001871227 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 360,644

F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Highland Leaders Fund I, L.P. ("HLF I") to its partners.

F2 · ownership.nature: These shares are held of record by HLF I. The general partner of HLF I is Highland Leaders Fund I GP, L.P. ("HLF I GP LP"), whose general partner is Highland Leaders Fund I GP, LLC ("HLF I GP LLC"). Robert Davis, Dan Nova, Paul Maeder, Corey Mulloy and Craig Driscoll (the "HLF I GP Managing Members") are the managing members of HLF I GP LLC and may be deemed to have voting and dispositive power over the shares held by HLF I. Each of HLF I GP LP, HLF I GP LLC, and the HLF I GP Managing Members disclaims beneficial ownership of the securities reported herein, except to the extent of their respective pecuniary interests therein, if any, and the filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, any of them is the beneficial owner of any securities reported herein. Mr. Driscoll is a director of the Issuer and files separate Section 16 reports.

SEC source: 0001562180-22-003915 · primarydocument.xml · derivative · entry 4

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,205

Underlying: Class A Common Stock · 26,205 shares

Expires 2029-08-07

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: One quarter (1/4) of the shares vested on May 2, 2020, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003915 · primarydocument.xml · derivative · entry 3

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,351

Underlying: Class A Common Stock · 26,351 shares

Expires 2028-01-29

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: One quarter (1/4) of the shares vested on January 1, 2019, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003915 · primarydocument.xml · nonDerivative · entry 2

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,075

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001562180-22-003915 · primarydocument.xml · nonDerivative · entry 1

Altschuler Randolph · CIK 0001869814 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 73,870

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001562180-22-003916 · primarydocument.xml · derivative · entry 6

CRONIN BILL · CIK 0001259278 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,021

Underlying: Class A Common Stock · 8,021 shares

Expires 2030-04-27

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: One quarter (1/4) of the shares vested on January 1, 2021, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003916 · primarydocument.xml · derivative · entry 5

CRONIN BILL · CIK 0001259278 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,583

Underlying: Class A Common Stock · 4,583 shares

Expires 2029-02-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: One quarter (1/4) of the shares vested on January 1, 2020, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003916 · primarydocument.xml · derivative · entry 4

CRONIN BILL · CIK 0001259278 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,292

Underlying: Class A Common Stock · 7,292 shares

Expires 2028-01-29

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: One quarter (1/4) of the shares vested on January 1, 2019, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003916 · primarydocument.xml · nonDerivative · entry 3

CRONIN BILL · CIK 0001259278 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,953

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001562180-22-003916 · primarydocument.xml · nonDerivative · entry 2

CRONIN BILL · CIK 0001259278 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 149,932

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001562180-22-003916 · primarydocument.xml · nonDerivative · entry 1

CRONIN BILL · CIK 0001259278 · Chief Revenue Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 145,349

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001562180-22-003609 · primarydocument.xml · derivative · entry 6

Rallo James M · CIK 0001352659 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 341,177

Underlying: Class A Common Stock · 21,246 shares

Expires 2030-05-05

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: One quarter (1/4) of the shares vested on April 13, 2021, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003609 · primarydocument.xml · derivative · entry 5

Rallo James M · CIK 0001352659 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 362,423

Underlying: Class A Common Stock · 2,283 shares

Expires 2030-05-05

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: One quarter (1/4) of the shares vested on April 13, 2021, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003609 · primarydocument.xml · nonDerivative · entry 4

Rallo James M · CIK 0001352659 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,687

F2 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person at least 30 days prior to the trading date.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $36.03 to $36.195, inclusive.

SEC source: 0001562180-22-003609 · primarydocument.xml · nonDerivative · entry 3

Rallo James M · CIK 0001352659 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,943

F2 · kind: Represents shares sold in a transaction that was effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person at least 30 days prior to the trading date.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.00 to $35.975, inclusive. The reporting person undertakes to provide to Xometry, Inc., any security holder of Xometry, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3) and (4) to this Form 4.

SEC source: 0001562180-22-003609 · primarydocument.xml · nonDerivative · entry 2

Rallo James M · CIK 0001352659 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,216

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person at least 30 days prior to the trading date.

SEC source: 0001562180-22-003609 · primarydocument.xml · nonDerivative · entry 1

Rallo James M · CIK 0001352659 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 42,933

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transaction reported in this Form 4 was effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person at least 30 days prior to the trading date.

SEC source: 0001562180-22-003297 · primarydocument.xml · derivative · entry 6

Goguen Peter · CIK 0001870011 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,375

Underlying: Class A Common Stock · 1,042 shares

Expires 2031-03-27

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: One quarter (1/4) of the shares vested on January 1, 2022, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003297 · primarydocument.xml · derivative · entry 5

Goguen Peter · CIK 0001870011 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,875

Underlying: Class A Common Stock · 1,042 shares

Expires 2030-04-27

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: One quarter (1/4) of the shares vested on January 1, 2021, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to the Reporting Person's continuous service.

SEC source: 0001562180-22-003297 · primarydocument.xml · derivative · entry 4

Goguen Peter · CIK 0001870011 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Class A Common Stock · 834 shares

Expires 2029-02-19

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: One quarter (1/4) of the shares vested on January 1, 2020, and thereafter, the remainder of the shares vest in 36 monthly installments, subject to Reporting Person's continuous service.

SEC source: 0001562180-22-003297 · primarydocument.xml · nonDerivative · entry 3

Goguen Peter · CIK 0001870011 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 141,252

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001562180-22-003297 · primarydocument.xml · nonDerivative · entry 2

Goguen Peter · CIK 0001870011 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 140,210

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.