MOSAIC REHABILITATION

each age 50 during a given calendar year. Participants direct the investment of their contributions into various investment options offered by the Plan. The Plan is also funded by Company matching contributions, which are subject to certain limitations imposed by Section 415 of the Internal Revenue Code (IRC). For the years ended December 31, 2025 and 2024, the Company made matching contributions equal to 100 % of the first 3 % of the participants’ eligible earnings contributed and 50 % of the next 3 % of the participants’ eligible earnings contributed. The Company also makes an annual non-elective employer contribution that is based on a percentage of the employee’s eligible pay, subject to certain limitations and requirements. For the 2025 and 2024 plan years, the Company made non-electi

nt funds offered by the Plan and may elect to change the investment direction of their existing account balances and their future contributions daily. (f) Vesting Participants are immediately vested in the portion of their Plan account related to participant contributions, Company matching contributions, and earnings thereon. Participants are vested in the non-elective employer contribution and the discretionary employer contribution portions of their account after either three years of service, attaining age 65 , or death while an employee. Forfeitures of non-vested participant accounts are used first to restore non-elective employer contributions for reemployed employees who are entitled to have forfeitures restored and are then used to offset employer contributions. In 2025 and 2024, em

tment consultant to assist with its fiduciary responsibilities. Mosaic’s Global Benefits Committee is responsible for oversight of and amending the Plan. Newly hired employees are automatically enrolled in the Plan at a 6 % deferral rate upon meeting the eligibility requirements. Contributions are invested in the Vanguard Target Retirement Fund that is nearest to the year the employee will reach age 65. A participant is assumed to have authorized the Company to withhold from each paycheck a percentage of pay on a before‑tax basis. Automatic payroll withholding can begin no sooner than 45 days from date of hire. A participant has the right to decline automatic enrollment within 45 days from date of hire. The Plan is subject to the provisions of the Employee Retirement Income Security Act of

289,295 29,249,892 Total contributions 53,200,703 57,856,101 Total additions 184,517,076 153,377,959 Deductions from net assets attributed to: Benefits paid 100,054,542 97,962,337 Administrative fees 361,731 137,585 Total deductions 100,416,273 98,099,922 Net increase 84,100,803 55,278,037 Net transfers from qualified plans 1,553,483 7,432,919 Net assets available for benefits: Beginning of year 853,247,831 790,536,875 End of year $ 938,902,117 $ 853,247,831 See accompanying notes to financial statements. 3 MOSAIC INVESTMENT PLAN Plan No. 004 Notes to Financial Statements December 31, 2025 and 2024 (1) Description of the Plan The following description of the Mosaic Investment Plan (the Plan) provides only general information. Participants should refer to the Plan document for a more comple