EMPLOYEE BENEFIT PLANS	12 Months Ended
Dec. 31, 2025
EMPLOYEE BENEFIT PLANS
EMPLOYEE BENEFIT PLANS	18. EMPLOYEE BENEFIT PLANS Defined Contribution Plan The Company maintains a 401(k) defined contribution retirement plan which covers all of its employees. Employees are eligible to participate on the first of the month following their date of hire. Under the 401(k) plan, participating employees may defer up to 100% of their pre-tax salary but not more than statutory limits. As of December 31, 2025, the Company contributes 3% of employee salary to the participant’s defined contribution plan, which vests immediately. Employee contributions also vest immediately. Greenbrook employees are eligible to participate in their plan on the first of the month following 60 days of hire. Under the 401(k) plan, participating employees may defer up to 100% of their pre-tax salary but not more than statutory limits. As of December 31, 2025, the Company matches 100% of each dollar an employee contributes on the first 1% of wages and 50% on additional contributions between 1% and 6% of wages (for a maximum total match of 3.5%). Full vesting occurs after two years of service. 2018 Employee Stock Purchase Plan In July 2018, the Company adopted the 2018 Employee Stock Purchase Plan (“ESPP”) with an initial 0.2 million share reserve, subject to automatic annual increases on January 1st of each year for a period of up to ten years, as defined in the plan document. The purpose of the 2018 ESPP is to enhance employee interest in the success and progress of the Company by encouraging employee ownership of common stock of the Company. The 2018 ESPP provides the opportunity to purchase the Company’s common stock at a 15% discount to the market price through payroll deductions or lump sum cash investments. As of December 31, 2025, the Company had not yet approved any offering under the plan and 2.2 million shares were reserved for issuance.

EMPLOYEE BENEFIT PLANS

12 Months Ended

Dec. 31, 2025

18. EMPLOYEE BENEFIT PLANS

Defined Contribution Plan

The Company maintains a 401(k) defined contribution retirement plan which covers all of its employees. Employees are eligible to participate on the first of the month following their date of hire. Under the 401(k) plan, participating employees may defer up to 100% of their pre-tax salary but not more than statutory limits. As of December 31, 2025, the Company contributes 3% of employee salary to the participant’s defined contribution plan, which vests immediately. Employee contributions also vest immediately.

Greenbrook employees are eligible to participate in their plan on the first of the month following 60 days of hire. Under the 401(k) plan, participating employees may defer up to 100% of their pre-tax salary but not more than statutory limits. As of December 31, 2025, the Company matches 100% of each dollar an employee contributes on the first 1% of wages and 50% on additional contributions between 1% and 6% of wages (for a maximum total match of 3.5%). Full vesting occurs after two years of service.

2018 Employee Stock Purchase Plan

In July 2018, the Company adopted the 2018 Employee Stock Purchase Plan (“ESPP”) with an initial 0.2 million share reserve, subject to automatic annual increases on January 1st of each year for a period of up to ten years, as defined in the plan document. The purpose of the 2018 ESPP is to enhance employee interest in the success and progress of the Company by encouraging employee ownership of common stock of the Company. The 2018 ESPP provides the opportunity to purchase the Company’s common stock at a 15% discount to the market price through payroll deductions or lump sum cash investments. As of December 31, 2025, the Company had not yet approved any offering under the plan and 2.2 million shares were reserved for issuance.