DRTTF

SEC source: 0001193125-25-228591 · ownership.xml · derivative · entry 1

Edwards Douglas A · CIK 0001895807 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 867,575

Underlying: Common Shares · 867,575 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.80, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on September 26, 2025. The price was converted using the Bank of Canada exchange rate for September 26, 2025 of C$1.3941 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0001193125-25-228605 · ownership.xml · derivative · entry 1

Ryan Scott C · CIK 0001895408 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 954,038

Underlying: Common Shares · 34,308 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.80, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on September 26, 2025. The price was converted using the Bank of Canada exchange rate for September 26, 2025 of C$1.3941 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0001193125-25-228586 · ownership.xml · derivative · entry 1

Groos Holyce Hess · CIK 0001860797 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,992

Underlying: Common Shares · 45,975 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.80, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on September 26, 2025. The price was converted using the Bank of Canada exchange rate for September 26, 2025 of C$1.3941 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0001193125-25-228603 · ownership.xml · derivative · entry 1

Robinson Scott L · CIK 0001341765 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,029,880

Underlying: Common Shares · 61,166 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.80, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on September 26, 2025. The price was converted using the Bank of Canada exchange rate for September 26, 2025 of C$1.3941 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0001193125-25-226918 · ownership.xml · nonDerivative · entry 2

Robinson Scott L · CIK 0001341765 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 313,269

SEC source: 0001193125-25-226918 · ownership.xml · nonDerivative · entry 1

Robinson Scott L · CIK 0001341765 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 301,269

SEC source: 0000950170-25-112545 · ownership.xml · derivative · entry 3

English Aron R. · CIK 0001770436 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 773,026 shares

Expires 2025-07-24

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

F1 · derivative.exercise_price: The 590,882 deferred share units ("DSUs") granted pursuant to the DIRTT Environmental Solutions Ltd. Second Amended and Restated Long Term Incentive Plan or its predecessor plan were settled in common shares ("Common Shares") of DIRTT Environmental Solutions Ltd. (the "Issuer") on a one-for-one basis. The 182,144 DSUs granted pursuant to the Deferred Share Unit Plan for Non-Employee Directors were settled in cash equal to the closing price of one Common Share on August 28, 2025 for each DSU, as reported on the Toronto Stock Exchange.

F1 · price: The 590,882 deferred share units ("DSUs") granted pursuant to the DIRTT Environmental Solutions Ltd. Second Amended and Restated Long Term Incentive Plan or its predecessor plan were settled in common shares ("Common Shares") of DIRTT Environmental Solutions Ltd. (the "Issuer") on a one-for-one basis. The 182,144 DSUs granted pursuant to the Deferred Share Unit Plan for Non-Employee Directors were settled in cash equal to the closing price of one Common Share on August 28, 2025 for each DSU, as reported on the Toronto Stock Exchange.

SEC source: 0000950170-25-112545 · ownership.xml · nonDerivative · entry 2

English Aron R. · CIK 0001770436 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,083,825

SEC source: 0000950170-25-112545 · ownership.xml · nonDerivative · entry 1

English Aron R. · CIK 0001770436 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,265,969

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

F1 · price: The 590,882 deferred share units ("DSUs") granted pursuant to the DIRTT Environmental Solutions Ltd. Second Amended and Restated Long Term Incentive Plan or its predecessor plan were settled in common shares ("Common Shares") of DIRTT Environmental Solutions Ltd. (the "Issuer") on a one-for-one basis. The 182,144 DSUs granted pursuant to the Deferred Share Unit Plan for Non-Employee Directors were settled in cash equal to the closing price of one Common Share on August 28, 2025 for each DSU, as reported on the Toronto Stock Exchange.

SEC source: 0000950170-25-109807 · ownership.xml · derivative · entry 3

Urban Benjamin Nicholas · CIK 0001936653 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Shares · 100,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On August 14, 2024, the reporting person was granted 300,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.exercise_date: On August 14, 2024, the reporting person was granted 300,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.expiration_date: On August 14, 2024, the reporting person was granted 300,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-109807 · ownership.xml · nonDerivative · entry 1

Urban Benjamin Nicholas · CIK 0001936653 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,455,312

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

F1 · price: On August 14, 2024, the reporting person was granted 300,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-109804 · ownership.xml · derivative · entry 3

HUNTER RICHARD J · CIK 0001742843 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 250,000

Underlying: Common Shares · 125,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On August 14, 2024, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.exercise_date: On August 14, 2024, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.expiration_date: On August 14, 2024, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-109804 · ownership.xml · nonDerivative · entry 2

HUNTER RICHARD J · CIK 0001742843 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,464,188

F2 · price: The price used to calculate the August 14 RSU vesting was C$0.78, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on August 13, 2025. The price was converted using the Bank of Canada exchange rate for August 13, 2025 of C$1.3767 = US$1.00.

F3 · balance_after: The Form 4 previously filed on June 10, 2025 inadvertently reported the incorrect total and the total stated here reflects the corrected amount.

SEC source: 0000950170-25-109804 · ownership.xml · nonDerivative · entry 1

HUNTER RICHARD J · CIK 0001742843 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,524,696

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

F1 · price: On August 14, 2024, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-109802 · ownership.xml · derivative · entry 3

Khan Fareeha · CIK 0001991412 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Shares · 100,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On August 14, 2025, the reporting person was granted 300,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.exercise_date: On August 14, 2025, the reporting person was granted 300,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.expiration_date: On August 14, 2025, the reporting person was granted 300,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-109802 · ownership.xml · nonDerivative · entry 2

Khan Fareeha · CIK 0001991412 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 253,051

F2 · price: The price used to calculate the June 7 RSU vesting was C$0.78, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on August 13, 2025. The price was converted using the Bank of Canada exchange rate for August 13, 2025 of C$1.3767= US$1.00.

SEC source: 0000950170-25-109802 · ownership.xml · nonDerivative · entry 1

Khan Fareeha · CIK 0001991412 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 301,559

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

F1 · price: On August 14, 2025, the reporting person was granted 300,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on August 14, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-108330 · ownership.xml · nonDerivative · entry 1

Khan Fareeha · CIK 0001991412 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 201,559

F1 · price: The purchase price of C$0.78 was converted using the Bank of Canada exchange rate for August 11, 2025 of C$1.3785 = US$1.00.

F2 · balance_after: The Form 4 previously filed on June 10, 2025 inadvertently reported the incorrect total and the total stated here reflects the corrected amount.

SEC source: 0000950170-25-105981 · ownership.xml · nonDerivative · entry 2

Robinson Scott L · CIK 0001341765 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 293,269

SEC source: 0000950170-25-105981 · ownership.xml · nonDerivative · entry 1

Robinson Scott L · CIK 0001341765 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 288,269

SEC source: 0000950170-25-100983 · ownership.xml · derivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 773,026

Underlying: Common Shares · 17,634 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.93, which was the closing price of the Issuer's Common Shares as reported on the Toronto Stock Exchange on July 28 2025. The price was converted using the Bank of Canada exchange rate for July 28, 2025 of C$1.3723 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0000950170-25-098854 · ownership.xml · derivative · entry 3

Noll Shaun · CIK 0001821774 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Shares · 809,089 shares

Expires 2025-07-24

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

F1 · derivative.exercise_price: The 643,605 deferred share units ("DSUs") granted pursuant to the DIRTT Environmental Solutions Ltd. Second Amended and Restated Long Term Incentive Plan or its predecessor plan were settled in common shares ("Common Shares") of DIRTT Environmental Solutions Ltd. (the "Issuer") on a one-for-one basis. The 165,484 DSUs granted pursuant to the Deferred Share Unit Plan for Non-Employee Directors were settled in cash equal to the closing price of one Common Share on July 23, 2025 for each DSU, as reported on the Toronto Stock Exchange.

F1 · price: The 643,605 deferred share units ("DSUs") granted pursuant to the DIRTT Environmental Solutions Ltd. Second Amended and Restated Long Term Incentive Plan or its predecessor plan were settled in common shares ("Common Shares") of DIRTT Environmental Solutions Ltd. (the "Issuer") on a one-for-one basis. The 165,484 DSUs granted pursuant to the Deferred Share Unit Plan for Non-Employee Directors were settled in cash equal to the closing price of one Common Share on July 23, 2025 for each DSU, as reported on the Toronto Stock Exchange.

SEC source: 0000950170-25-098854 · ownership.xml · nonDerivative · entry 2

Noll Shaun · CIK 0001821774 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,245,248

SEC source: 0000950170-25-098854 · ownership.xml · nonDerivative · entry 1

Noll Shaun · CIK 0001821774 · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,410,732

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

F1 · price: The 643,605 deferred share units ("DSUs") granted pursuant to the DIRTT Environmental Solutions Ltd. Second Amended and Restated Long Term Incentive Plan or its predecessor plan were settled in common shares ("Common Shares") of DIRTT Environmental Solutions Ltd. (the "Issuer") on a one-for-one basis. The 165,484 DSUs granted pursuant to the Deferred Share Unit Plan for Non-Employee Directors were settled in cash equal to the closing price of one Common Share on July 23, 2025 for each DSU, as reported on the Toronto Stock Exchange.

SEC source: 0000950170-25-092820 · ownership.xml · derivative · entry 1

Pannikode Shalima K. · CIK 0002016045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 222,733

Underlying: Common Shares · 30,229 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.82, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 27, 2025. The price was converted using the Bank of Canada exchange rate for June 27, 2025 of C$1.3676 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0000950170-25-092818 · ownership.xml · derivative · entry 1

Edwards Douglas A · CIK 0001895807 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 822,299

Underlying: Common Shares · 34,294 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.82, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 27, 2025. The price was converted using the Bank of Canada exchange rate for June 27, 2025 of C$1.3676 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0000950170-25-092819 · ownership.xml · derivative · entry 1

Ryan Scott C · CIK 0001895408 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 919,730

Underlying: Common Shares · 32,835 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.82, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 27, 2025. The price was converted using the Bank of Canada exchange rate for June 27, 2025 of C$1.3676 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0000950170-25-092821 · ownership.xml · derivative · entry 1

Groos Holyce Hess · CIK 0001860797 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,017

Underlying: Common Shares · 34,814 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.82, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 27, 2025. The price was converted using the Bank of Canada exchange rate for June 27, 2025 of C$1.3676 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0000950170-25-092822 · ownership.xml · derivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 755,391

Underlying: Common Shares · 62,543 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.82, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 27, 2025. The price was converted using the Bank of Canada exchange rate for June 27, 2025 of C$1.3676 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0000950170-25-092823 · ownership.xml · derivative · entry 1

Robinson Scott L · CIK 0001341765 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 968,714

Underlying: Common Shares · 42,029 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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$0.82, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 27, 2025. The price was converted using the Bank of Canada exchange rate for June 27, 2025 of C$1.3676 = US$1.00.

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Third 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. Third 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: 0000950170-25-089952 · ownership.xml · derivative · entry 1

Noll Shaun · CIK 0001821774 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 809,089

Underlying: Common Shares · 60,060 shares

Expires not disclosed

F1 · derivative.exercise_price: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Second 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$0.80, which was the closing price of the Issuer's Common Shares as reported on the Toronto Stock Exchange on June 20, 2025. The price was converted using the Bank of Canada exchange rate for June 20, 2025 of C$1.3728 = US$1.00

F1 · derivative.exercise_date: Each deferred share unit ("DSU") was granted pursuant to the DIRTT Environmental Solutions Ltd. Second 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. Second 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: 0000950170-25-084528 · ownership.xml · derivative · entry 3

Khan Fareeha · CIK 0001991412 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Shares · 25,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On June 7, 2023, the reporting person was granted 75,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.exercise_date: On June 7, 2023, the reporting person was granted 75,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.expiration_date: On June 7, 2023, the reporting person was granted 75,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-084528 · ownership.xml · nonDerivative · entry 2

Khan Fareeha · CIK 0001991412 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 216,559

F2 · price: The price used to calculate the June 7 RSU vesting was C$0.85, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 6, 2025. The price was converted using the Bank of Canada exchange rate for June 6, 2025 of C$1.3690 = US$1.00.

SEC source: 0000950170-25-084528 · ownership.xml · nonDerivative · entry 1

Khan Fareeha · CIK 0001991412 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 229,025

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

F1 · price: On June 7, 2023, the reporting person was granted 75,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-084526 · ownership.xml · derivative · entry 3

HUNTER RICHARD J · CIK 0001742843 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,666

Underlying: Common Shares · 116,667 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On June 7, 2023, the reporting person was granted 350,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represent a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.exercise_date: On June 7, 2023, the reporting person was granted 350,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represent a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.expiration_date: On June 7, 2023, the reporting person was granted 350,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represent a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-084526 · ownership.xml · nonDerivative · entry 2

HUNTER RICHARD J · CIK 0001742843 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,516,363

F2 · price: The price used to calculate the June 7 RSU vesting was C$0.85, which was the closing price per the Issuer's Common Shares as reported on the Toronto Stock Exchange on June 6, 2025. The price was converted using the Bank of Canada exchange rate for June 6, 2025 of C$1.3690 = US$1.00

SEC source: 0000950170-25-084526 · ownership.xml · nonDerivative · entry 1

HUNTER RICHARD J · CIK 0001742843 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,572,830

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

F1 · price: On June 7, 2023, the reporting person was granted 350,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represent a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-084525 · ownership.xml · derivative · entry 3

Urban Benjamin Nicholas · CIK 0001936653 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 125,000

Underlying: Common Shares · 125,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On June 7, 2023, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.exercise_date: On June 7, 2023, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

F1 · derivative.expiration_date: On June 7, 2023, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-084525 · ownership.xml · nonDerivative · entry 2

Urban Benjamin Nicholas · CIK 0001936653 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,355,312

F2 · price: The price used to calculate the June 7 RSU vesting was C$0.85, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on June 6, 2025. The price was converted using the Bank of Canada exchange rate for June 6, 2025 of C$1.3690 = US$1.00.

SEC source: 0000950170-25-084525 · ownership.xml · nonDerivative · entry 1

Urban Benjamin Nicholas · CIK 0001936653 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,415,778

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

F1 · price: On June 7, 2023, the reporting person was granted 375,000 RSUs, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each RSU represents a conditional right to receive a cash payment equal to the fair market value of one Common Share of the Issuer or, at the Issuer's discretion, a number of Common Shares (or a combination of cash and Common Shares) equal to the fair market value of one Common Share. One-third of the RSUs vested on June 9, 2025 and were converted into Common Stock on a one-to-one basis at the Issuer's discretion.

SEC source: 0000950170-25-109807 · ownership.xml · nonDerivative · entry 2

Urban Benjamin Nicholas · CIK 0001936653 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,406,804

F2 · price: The price used to calculate the August 14 RSU vesting was C$0.78, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on August 13, 2025. The price was converted using the Bank of Canada exchange rate for August 13, 2025 of C$1.3767 = US$1.00.

SEC source: 0000950170-25-070505 · ownership.xml · nonDerivative · entry 1

Robinson Scott L · CIK 0001341765 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 283,269

SEC source: 0000950170-25-050566 · ownership.xml · derivative · entry 1

Ryan Scott C · CIK 0001895408 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 886,895

Underlying: Common Shares · 29,835 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$1.04, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on March 28, 2025. The price was converted using the Bank of Canada exchange rate for March 28, 2025of C$1.4307 = 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: 0000950170-25-050262 · ownership.xml · derivative · entry 1

Groos Holyce Hess · CIK 0001860797 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 45,203

Underlying: Common Shares · 29,404 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$1.04, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on March 28, 2025. The price was converted using the Bank of Canada exchange rate for March 28, 2025of C$1.4307 = 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: 0000950170-25-050513 · ownership.xml · derivative · entry 1

Noll Shaun · CIK 0001821774 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 749,029

Underlying: Common Shares · 51,588 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$1.04, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on March 28, 2025. The price was converted using the Bank of Canada exchange rate for March 28, 2025of C$1.4307 = 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: 0000950170-25-050274 · ownership.xml · derivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 692,849

Underlying: Common Shares · 51,588 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$1.04, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on March 28, 2025. The price was converted using the Bank of Canada exchange rate for March 28, 2025of C$1.4307 = 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: 0000950170-25-050268 · ownership.xml · derivative · entry 1

Robinson Scott L · CIK 0001341765 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 926,686

Underlying: Common Shares · 30,953 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$1.04, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on March 28, 2025. The price was converted using the Bank of Canada exchange rate for March 28, 2025of C$1.4307 = 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: 0000950170-25-050913 · ownership.xml · derivative · entry 1

Edwards Douglas A · CIK 0001895807 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 788,005

Underlying: Common Shares · 28,975 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$1.04, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on March 28, 2025. The price was converted using the Bank of Canada exchange rate for March 28, 2025of C$1.4307 = 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: 0001193125-25-240490 · ownership.xml · derivative · entry 1

Pannikode Shalima K. · CIK 0002016045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 192,504

Underlying: Common Shares · 24,934 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$1.04, which was the closing price Issuer's Common Shares as reported on the Toronto Stock Exchange on March 28, 2025. The price was converted using the Bank of Canada exchange rate for March 28, 2025 of C$1.4307 = 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

F3 · balance_after: The reported number of total derivative securities beneficially owned by the reporting person in column 9 of Table II to each the Form 4 filed for such reporting person on July 2, 2025 and October 2, 2025 already reflected the shares reported in this Form 4 for the transaction occurring on March 31, 2025, and therefore no further adjustments to those total amounts need to be made.

SEC source: 0000950170-25-043844 · ownership.xml · nonDerivative · entry 2

Noll Shaun · CIK 0001821774 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · WWT Opportunity #1 LLC

Disclosed balance after: 53,601,643

F2 · price: The price reported in column 4 is a weighted average price. The price was converted using the Bank of Canada exchange rate for March 21, 2025 of C$1.4348 = US$1.00.