21.     GOVERNMENT ASSISTANCE

Employee Retention Credit

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The Coronavirus Aid, Relief and Economic Security Act provided an employee retention credit (the “ERC”), a refundable tax credit related to certain payroll taxes. The Company applied the grant model and determined that the criteria for recognition of the ERC were met based on its eligibility assessment and filing of the ERC claim.

During the six months ended June 30, 2025, Neuronetics received $2.6 million related to its ERC claim, consisting of $2.3 million of claims related to fiscal year 2021 and interest of $0.3 million.

During the six months ended June 30, 2026, Greenbrook received $2.2 million related to its ERC claim. On March 2, 2026, the Company entered into an agreement with Madryn Asset Management, LP and its affiliates (collectively, “Madryn”), pursuant to which it paid $1.1 million of the ERC proceeds to Madryn. The Company incurred $0.3 million of professional fees and recognized net other income of $0.8 million. This payment to Madryn related to the Term Loan and Exchange Agreement previously executed between Madryn and Greenbrook prior to the completion of the Arrangement. Madryn is the Company’s largest stockholder, and Avinash Amin, M.D., a representative of Madryn, serves on the Board.