On June 5, 2024, the Greenbrook TMS Inc. entered into the thirty-third amendment (the ?Amendment?) to the Company?s credit agreement, dated as of July 14, 2022 (as previously amended and as amended by the Amendment, the ?Credit Agreement?), by and among the Company, certain of its subsidiaries party thereto as guarantors, Madryn Fund Administration, LLC, as administrative agent (?Madryn?) and the lenders party thereto. Pursuant to the Amendment, the Company borrowed USD 3,563,452 in senior secured term loans (the ?New Loan?), the proceeds of which are expected to be used by the Company for general corporate and working capital purposes. After giving effect to the Amendment and the borrowing of the New Loan, the aggregate principal amount outstanding under the Credit Agreement is approximately USD 105 million (collectively, the ?Loans?).

The aggregate amount outstanding under the Credit Agreement, which includes accrued interest, interest paid in kind, and all amendment fees is approximately USD 116 million. The Loans accrue interest at a rate per annum equal to 9.0% plus the 3-month term Secured Overnight Financing Rate (subject to a floor of 1.5%) plus 0.10%. The Loans mature over 63 months and provide for four years of interest-only payments.

The outstanding principal balance is due in five equal quarterly installments beginning on September 30, 2026. The Company has granted a lien on, and security interest in, all assets of the Company as security for the performance and prompt payment of the obligations of the Loan Parties (as defined in the Credit Agreement) under the Credit Agreement.