CORNING BUILDING COMPANY, INC.

l Company contributions become fully vested upon attainment of Early or Normal Retirement Age, total and permanent disability, or death. Contributions – Employer The Company makes matching contributions as a percentage of a participant’s first 5 % of eligible pay contributed according to years of service as of December 31 of the prior year as follows: Less than 19 years of service 50 % 19 but less than 24 years of service 75 % 24 or more years of service 100 % With respect to all employees eligible to participate in the Plan, each employee who has nine or more years of vesting service as of the preceding December 31, irrespective of whether such employee has elected to contribute to the Plan, the Company contributes weekly or monthly (based on employee’s pay frequency) a supplemental contr

ancial Statements December 31, 2025 and 2024 Vesting Participants are vested immediately in their contributions plus actual earnings thereon. Company contributions to the Plan are fully vested after three years of service. All Company contributions become fully vested upon attainment of Early or Normal Retirement Age, total and permanent disability, or death. Contributions – Employer The Company makes matching contributions as a percentage of a participant’s first 5 % of eligible pay contributed according to years of service as of December 31 of the prior year as follows: Less than 19 years of service 50 % 19 but less than 24 years of service 75 % 24 or more years of service 100 % With respect to all employees eligible to participate in the Plan, each employee who has nine or more years of

g a given year to contribute additional before-tax or Roth amounts up to the prescribed Internal Revenue Code (“IRC”) limitation for “catch-up contributions.” The Plan includes an auto-enrollment provision whereby all newly eligible employees are automatically enrolled in the Plan unless they affirmatively elect not to participate in the Plan or they make an affirmative election to contribute to the Plan. Automatically enrolled participants have their before-tax deferral rate set at 6 % of eligible compensation. New employees have 90 days in which to change or opt-out of this provision before deferrals begin. Such auto-enrolled new employee shall have their before-tax contribution automatically increased annually in 1 % increments until the employee’s contribution percentage reaches 10 % o

mployer, net of forfeitures applied 7,906 Participant 20,621 28,527 Total additions 143,780 Deductions from net assets attributed to: Benefits paid directly to participants 50,024 Administrative expenses 243 Total deductions 50,267 Net increase 93,513 Transfers to Corning Incorporated Investment Plan ( 1,180 ) Net assets available for benefits Beginning of year 458,780 End of year $ 551,113 The accompanying notes are an integral part of these financial statements. 8 Corning Incorporated Investment Plan for Unionized Employees Notes to Financial Statements December 31, 2025 and 2024 1. Description of Plan General The following brief description of the Corning Incorporated Investment Plan for Unionized Employees (the “Plan”) is provided for general information purposes only. Participants sho