English Aron R.

SEC source: 0000921895-25-000751 · form410680017_03122025.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,705,227

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.6600 to $5.0800, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-25-000751 · form410680017_03122025.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,638,564

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.5300 to $4.8000, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000950170-25-001574 · ownership.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 641,261

Underlying: Common Shares · 41,077 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

F2 · price: The price used to calculate the number of DSUs granted was C$0.96, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on December 30, 2024. The price was converted using the Bank of Canada exchange rate for December 30, 2024 of C$1.4379 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

F1 · derivative.expiration_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

SEC source: 0001493152-24-052101 · ownership.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · 22NW Fund, LP

Disclosed balance after: 15,467,300

F1 · shares: The shares were issued to 22NW Fund, LP in connection with a private placement offering of the Issuer.

F2 · ownership.nature: This Form 4 is filed jointly by Aron R. English and 22NW Fund, LP (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities of the Issuer owned directly by other members of the Section 13(d) group and this report shall not be deemed an admission that the Reporting Persons are the beneficial owners of such securities for purposes of Section 16 or for any other purpose. Further, each of the Reporting Persons expressly disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F3 · ownership.nature: Securities owned directly by 22NW Fund, LP. Mr. English, as the Manager of 22NW Fund GP, LLC, which is the General Partner of 22NW Fund, LP, may be deemed to beneficially own the securities owned directly by 22NW Fund, LP.

SEC source: 0000921895-24-003006 · form410680017_12202024.xml · nonDerivative · entry 3

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,624,715

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.2050 to $5.2500, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-003006 · form410680017_12202024.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,620,151

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-003006 · form410680017_12202024.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,612,517

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.2450 to $5.2500, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-002931 · form410680017_12112024.xml · nonDerivative · entry 3

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,611,271

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F5 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.2000 to $5.2500, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-002931 · form410680017_12112024.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,608,971

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.0000 to $5.0950, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-002931 · form410680017_12112024.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,597,177

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.9200 to $5.0000, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000950170-24-111669 · ownership.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 600,184

Underlying: Common Shares · 52,886 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

F2 · price: The price used to calculate the number of DSUs granted was C$0.70, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on September 27, 2024. The price was converted using the Bank of Canada exchange rate for September 27, 2024 of C$1.3499 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

F1 · derivative.expiration_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

SEC source: 0000921895-24-002147 · form410680017_09192024.xml · nonDerivative · entry 3

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,594,390

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F5 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.0700 to $6.3500, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-002147 · form410680017_09192024.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,489,148

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.9450 to $6.1800, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-002147 · form410680017_09192024.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,456,827

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.7100 to $6.0000, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-002119 · form410680017_09112024.xml · nonDerivative · entry 3

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,354,343

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F5 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.46 to $5.50, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-002119 · form410680017_09112024.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,351,890

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.26 to $5.50, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-002119 · form410680017_09112024.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,347,366

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.18 to $5.46, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001689 · form410680012_08052024.xml · derivative · entry 2

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 0

Underlying: Common Shares · 3,247,143 shares

Expires 2026-12-31

F1 · derivative.exercise_price: Represents Canadian dollars (C$).

F5 · kind: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F1 · reported_value: Represents Canadian dollars (C$).

F5 · reported_value: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F1 · price: Represents Canadian dollars (C$).

F5 · price: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F2 · derivative.exercise_date: The 6.00% Convertible Unsecured Debentures due January 2026 and the 6.25% Convertible Unsecured Debentures due December 2026 are convertible as of the date hereof and were convertible commencing from the date of their original issuance.

F5 · derivative.exercise_date: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F3 · derivative.underlying: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F5 · derivative.underlying_shares: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F4 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001689 · form410680012_08052024.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 0

Underlying: Common Shares · 4,067,742 shares

Expires 2026-01-31

F1 · derivative.exercise_price: Represents Canadian dollars (C$).

F5 · kind: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F1 · reported_value: Represents Canadian dollars (C$).

F5 · reported_value: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F1 · price: Represents Canadian dollars (C$).

F5 · price: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F2 · derivative.exercise_date: The 6.00% Convertible Unsecured Debentures due January 2026 and the 6.25% Convertible Unsecured Debentures due December 2026 are convertible as of the date hereof and were convertible commencing from the date of their original issuance.

F5 · derivative.exercise_date: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F3 · derivative.underlying: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F5 · derivative.underlying_shares: On August 2, 2024, 22NW Fund and the Issuer entered into a convertible debenture repurchase agreement (the "Repurchase Agreement"). Pursuant to the Repurchase Agreement, the Issuer has purchased from 22NW Fund for cancellation an aggregate of (i) C$18,915,000 principal amount of the Issuer's outstanding 6.00% convertible debentures due January 31, 2026 (the "January Debentures") at a purchase price of C$684.58 per C$1,000 principal amount of January Debentures and (ii) C$13,638,000 principal amount of the Issuer's outstanding 6.25% convertible debentures due December 31, 2026 (the "December Debentures" and together with the January Debentures, the "Debentures") at a purchase price of C$665.64 per C$1,000 principal amount of December Debentures, for an aggregate purchase price of C$22,104,591.45, inclusive of a cash payment for all accrued and unpaid interest up to, but excluding, the date of purchase of the Debentures.

F4 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001608 · form410680017_07192024.xml · nonDerivative · entry 3

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,342,488

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F5 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.19 to $5.25, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001608 · form410680017_07192024.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,339,817

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.13 to $5.25, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001608 · form410680017_07192024.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,337,196

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.20 to $5.25, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001574 · form410680017_07162024.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,331,447

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.14 to $5.25, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001574 · form410680017_07162024.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,321,744

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.05 to $5.13, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001551 · form410680017_07102024.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,308,469

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.88 to $5.05, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-24-001551 · form410680017_07102024.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,286,344

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.57 to $4.75, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000950170-24-080336 · ownership.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 547,298

Underlying: Common Shares · 65,129 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

F2 · price: The price used to calculate the number of DSUs granted was C$0.57, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 28, 2024. The price was converted using the Bank of Canada exchange rate for June 28, 2024 of C$1.3687 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

F1 · derivative.expiration_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

SEC source: 0001493152-24-024121 · ownership.xml · derivative · entry 2

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,324

Underlying: Common Stock · 1,324 shares

Expires 2034-06-12

F2 · derivative.exercise_date: These stock options vest on the earlier of November 30,2024 or the date of the 2024 annual meeting of shareholders

SEC source: 0001493152-24-024121 · ownership.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,667

Underlying: Common Stock · 41,667 shares

Expires 2034-06-12

F1 · derivative.exercise_date: These stock options vest 50% on the date of the 2024 annual meeting of shareholders and 50% on the one year anniversary of the date of grant

SEC source: 0000950170-24-039280 · ownership.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 482,169

Underlying: Common Shares · 54,854 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

F2 · price: The price used to calculate the number of DSUs granted was C$0.67, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on March 28, 2024. The price was converted using the Bank of Canada exchange rate for March 28, 2024 of C$1.3550 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

F1 · derivative.expiration_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors

SEC source: 0001193805-24-000084 · e619202_4-english.xml · derivative · entry 6

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 0

Underlying: Common Shares · 28,191,998 shares

Expires 2024-01-05

F3 · derivative.exercise_price: Represents Canadian dollars (C$).

F4 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0001193805-24-000084 · e619202_4-english.xml · derivative · entry 5

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 1,575,057 shares

Expires 2024-01-05

F3 · derivative.exercise_price: Represents Canadian dollars (C$).

SEC source: 0001193805-24-000084 · e619202_4-english.xml · nonDerivative · entry 4

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 49,955,045

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F5 · kind: Represents an internal transfer from 22NW Fund to Mr. English.

F3 · price: Represents Canadian dollars (C$).

F4 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0001193805-24-000084 · e619202_4-english.xml · nonDerivative · entry 3

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,470,167

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F5 · kind: Represents an internal transfer from 22NW Fund to Mr. English.

F3 · price: Represents Canadian dollars (C$).

SEC source: 0001193805-24-000084 · e619202_4-english.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 54,072,786

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · kind: On January 9, 2024, the Issuer announced the results of its CA$30.0 million rights offering (the "Rights Offering"). Each subscription right was exercisable for 0.81790023 Common Shares, rounded down to the nearest whole number, together with oversubscription rights. The Reporting Persons participated in the Rights Offering in full, as well as exercising their oversubscription rights, at a subscription price of CA$0.35 per Common Share. The number of Common Shares reported above includes the allocation pursuant to the Reporting Persons' exercise of their oversubscription rights. The Reporting Persons did not receive confirmation of the receipt of the Common Shares issued pursuant to the exercise of their oversubscription rights until January 22, 2024.

F3 · price: Represents Canadian dollars (C$).

F4 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0001193805-24-000084 · e619202_4-english.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,352,427

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · kind: On January 9, 2024, the Issuer announced the results of its CA$30.0 million rights offering (the "Rights Offering"). Each subscription right was exercisable for 0.81790023 Common Shares, rounded down to the nearest whole number, together with oversubscription rights. The Reporting Persons participated in the Rights Offering in full, as well as exercising their oversubscription rights, at a subscription price of CA$0.35 per Common Share. The number of Common Shares reported above includes the allocation pursuant to the Reporting Persons' exercise of their oversubscription rights. The Reporting Persons did not receive confirmation of the receipt of the Common Shares issued pursuant to the exercise of their oversubscription rights until January 22, 2024.

F3 · price: Represents Canadian dollars (C$).

SEC source: 0000921895-24-000718 · form4a110680012_03262024.xml · derivative · entry 2

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 1,597,833 shares

Expires 2024-01-05

F3 · derivative.exercise_price: Represents Canadian dollars (C$).

SEC source: 0000921895-24-000718 · form4a110680012_03262024.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,375,202

F1 · security: This Form 4/A is being filed by Aron English (the "Reporting Person") to amend the prior Form 4 filed by Mr. English and certain other reporting persons with the Securities and Exchange Commission on January 23, 2024. The prior Form 4 is hereby amended to correct the amount of Common Shares the Reporting Person received in the CA$30.0 million rights offering announced by the Issuer on January 9, 2024 (the "Rights Offering") to include an additional 22,776 Common Shares received pursuant to the Reporting Person's exercise of his oversubscription rights in connection with the closing of the Rights Offering. The Reporting Person did not receive confirmation of the final amount of Common Shares allocated pursuant to his oversubscription rights until after the filing of the prior Form 4. Accordingly, the total amount of Common Shares directly owned by the Reporting Person is 7,492,943.

F2 · kind: On January 9, 2024, the Issuer announced the results of the Rights Offering. Each subscription right was exercisable for 0.81790023 Common Shares, rounded down to the nearest whole number, together with oversubscription rights. The Reporting Person participated in the Rights Offering in full, as well as exercising his oversubscription rights, at a subscription price of CA$0.35 per Common Share. The number of Common Shares reported above includes the allocation pursuant to the Reporting Person's exercise of his oversubscription rights.

F3 · price: Represents Canadian dollars (C$).

SEC source: 0000950170-24-000653 · ownership.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 427,315

Underlying: Common Shares · 75,566 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months

F2 · price: The price used to calculate the number of DSUs granted was C$0.48, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on December 29, 2023. The price was converted using the Bank of Canada exchange rate for December 29, 2023 of C$1.3226 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months

F1 · derivative.expiration_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months

SEC source: 0001209191-23-059337 · doc4.xml · nonDerivative · entry 3

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · 22NW Fund, LP

Disclosed balance after: 5,366,290

F4 · ownership.nature: Securities owned directly by 22NW Fund, LP. Mr. English, as the Manager of 22NW Fund GP, LLC, which is the General Partner of 22NW Fund, LP, may be deemed to beneficially own the securities owned directly by 22NW Fund, LP.

SEC source: 0001209191-23-059337 · doc4.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · 22NW, LP

Disclosed balance after: 0

F3 · ownership.nature: Securities owned directly by 22NW, LP. Mr. English, as the Manager of 22NW, LP may be deemed to beneficially own the securities owned directly by 22NW, LP.

SEC source: 0000921895-23-002704 · form410680012_12012023.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 25,880,788

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents Canadian dollars (C$).

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0001209191-23-059337 · doc4.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · 22NW, LP

Disclosed balance after: 300,000

F1 · price: The shares were issued to 22NW, LP as partial consideration for entering into a loan and security agreement with the Issuer.

F2 · ownership.direct: This Form 4 is filed jointly by Aron R. English, 22NW, LP and 22NW Fund, LP (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities of the Issuer owned directly by other members of the Section 13(d) group and this report shall not be deemed an admission that the Reporting Persons are the beneficial owners of such securities for purposes of Section 16 or for any other purpose. Further, each of the Reporting Persons expressly disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F3 · ownership.nature: Securities owned directly by 22NW, LP. Mr. English, as the Manager of 22NW, LP may be deemed to beneficially own the securities owned directly by 22NW, LP.

SEC source: 0000950170-23-051627 · ownership.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 351,749

Underlying: Common Shares · 66,211 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months

F2 · price: The price used to calculate the number of DSUs granted was C$0.56, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on September 29, 2023. The price was converted using the Bank of Canada exchange rate for September 29, 2023 of C$1.3520 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months

F1 · derivative.expiration_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months

SEC source: 0000921895-23-002206 · form410680012_09212023.xml · derivative · entry 2

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: Not disclosed

Underlying: Common Shares · 3,247,143 shares

Expires 2026-12-31

F1 · derivative.exercise_price: Represents Canadian dollars (C$).

F1 · reported_value: Represents Canadian dollars (C$).

F1 · price: Represents Canadian dollars (C$).

F2 · derivative.exercise_date: The 6.00% Convertible Unsecured Debentures due January 2026 and the 6.25% Convertible Unsecured Debentures due December 2026 are convertible as of the date hereof and were convertible commencing from the date of their original issuance.

F3 · derivative.underlying: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F1 · valueOwnedAfter: Represents Canadian dollars (C$).

F4 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-23-002206 · form410680012_09212023.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: Not disclosed

Underlying: Common Shares · 4,067,742 shares

Expires 2026-01-31

F1 · derivative.exercise_price: Represents Canadian dollars (C$).

F1 · reported_value: Represents Canadian dollars (C$).

F1 · price: Represents Canadian dollars (C$).

F2 · derivative.exercise_date: The 6.00% Convertible Unsecured Debentures due January 2026 and the 6.25% Convertible Unsecured Debentures due December 2026 are convertible as of the date hereof and were convertible commencing from the date of their original issuance.

F3 · derivative.underlying: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F1 · valueOwnedAfter: Represents Canadian dollars (C$).

F4 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-23-002033 · form410680sskn_08182023.xml · nonDerivative · entry 1

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

English Aron R. · CIK 0001770436 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 5,369,954

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · price: Represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $0.4799 to $0.5600, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000899243-23-017417 · doc4.xml · derivative · entry 1

English Aron R. · CIK 0001770436 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 285,538

Underlying: Common Shares · 103,394 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months.

F2 · price: The price used to calculate the number of DSUs granted was $0.272, which was the closing price Issuer's Common Shares as reported on the NASDAQ Stock Exchange on June 29, 2023

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months.

F1 · derivative.expiration_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Amended and Restated Long Term Incentive Plan and is the economic equivalent of one common share (a "Common Share") of DIRTT Environmental Solutions Ltd. (the "Issuer"). All DSUs settle following the cessation of service and employment with the Issuer (the "Termination Date"). For directors who are subject to taxation in the United States ("US Directors"), the DSUs will settle no later than forty days following the Termination Date. Each DSU will be settled in one Common Share or in the cash equivalent of such Common Shares, calculated based on the closing price of the Common Shares on the day prior to the 30th day following separation from service for US Directors on the stock exchange which has the greatest trading volume of Common Shares for the previous six months.

SEC source: 0000921895-23-001414 · form410680012_06022023.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · Director · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 21,356,410

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding Common Shares. Mr. English is also a director of the Issuer. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F2 · kind: On May 31, 2023, the Issuer announced that shareholders approved the issuance of 3,899,745 Common Shares to 22NW Fund, at a deemed price of $0.40 per Common Share, as reimbursement for legal fees and other expenses incurred by the Reporting Persons in connection with the contested director election at the Issuer's 2022 annual and special meeting.

F2 · price: On May 31, 2023, the Issuer announced that shareholders approved the issuance of 3,899,745 Common Shares to 22NW Fund, at a deemed price of $0.40 per Common Share, as reimbursement for legal fees and other expenses incurred by the Reporting Persons in connection with the contested director election at the Issuer's 2022 annual and special meeting.

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

SEC source: 0000921895-23-001295 · form41068001322nw_05192023.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

22NW, LP · CIK 0001694297 · 10% owner

22NW Fund, LP · CIK 0001640809 · 10% owner

22NW Fund GP, LLC · CIK 0001770575 · 10% owner

22NW GP, Inc. · CIK 0001783663 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By: 22NW Fund, LP

Disclosed balance after: 1,313,121

F1 · security: This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron R. English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

F4 · price: Represents a weighted average price. These Shares were purchased in multiple transactions at prices ranging from $10.8750 to $11.2450. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of Shares purchased at each separate price within the range set forth in this footnote

F3 · ownership.nature: Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.