Sec Form 4 Filing - Noll Shaun @ DIRTT ENVIRONMENTAL SOLUTIONS LTD - 2023-09-18

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Noll Shaun 2. Issuer Name and Ticker or Trading Symbol DIRTT ENVIRONMENTAL SOLUTIONS LTD [ DRTT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 7303 30 STREET SE 3. Date of Earliest Transaction (MM/DD/YY) 09/18/2023 (Street) CALGARY, A0T2C1N6 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Shares 09/18/2023 09/18/2023 P 1,399 A $ 0.38 ( 1 ) 1,146,606 D Common Shares 09/19/2023 09/19/2023 P 104,000 A $ 0.44 ( 2 ) 1,250,606 D Common Shares 09/20/2023 09/20/2023 P 80,000 A $ 0.4805 ( 3 ) 1,330,606 D Common Shares 4,996,844 I ( 4 ) By 726 BC LLC Common Shares 11,928,214 I ( 5 ) By 726 BF LLC

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Noll Shaun 7303 30 STREET SE CALGARY, A0T2C1N6 X X Signatures /s/ Fareeha Khan, as attorney-in-fact for Shaun Noll 09/22/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The price reported in column 4 is a weighted average price. The price was converted using the Bank of Canada exchange rate for September 18, 2023 of C$1.3491 = US$1.00. ( 2 )The price reported in column 4 is a weighted average price. The price was converted using the Bank of Canada exchange rate for September 19, 2023 of C$1.3414 = US$1.00. ( 3 )The price reported in column 4 is a weighted average price. The price was converted using the Bank of Canada exchange rate for September 20, 2023 of C$1.3466 = US$1.00. ( 4 )Shares owned directly by 726 BC. Matthew Briger, as the Manager of 726 BC, may be deemed to beneficially own the shares of the Issuer owned directly by 726 BC. Shaun Noll, Chief Investment Officer and President of 726 BC, has been delegated power to vote and dispose of the securities owned by 726 BC and, accordingly, Shaun Noll may be deemed to beneficially own the shares of the Issuer owned directly by 726 BC. ( 5 )Shares owned directly by 726 BF. Peter L. Briger Jr., as the Manager of 726 BF, may be deemed to beneficially own the shares of the Issuer owned directly by 726 BF. Shaun Noll, Chief Investment Officer and President of 726 BF, has been delegated power to vote and dispose of the securities owned by 726 BF and, accordingly, Shaun Noll may be deemed to beneficially own the shares of the Issuer owned directly by 726 BF

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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