GLAUKOS Corp New Standards Disclosure

Recently Adopted Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which is intended to improve the transparency of income tax disclosures by requiring consistent categories and greater disaggregation of information in the effective tax rate reconciliation and income taxes paid by jurisdiction. The ASU is effective for public business entities’ annual periods beginning after December 15, 2024, with early adoption permitted. The Company adopted this pronouncement on a prospective basis as of January 1, 2025, resulting in incremental disclosures within Note 11. Income Taxes.

Recently Issued Accounting Pronouncements Not Yet Adopted

In December 2025, the FASB issued Accounting Standards Update ASU 2025-11, Interim Reporting (Topic 270): Narrow-Scope Improvements (ASU 2025-11), which clarifies interim disclosure requirements by improving the navigability of the required interim disclosures and clarifying when that guidance is applicable. The standard is intended to help entities determine whether disclosures not specified in Topic 270 should be provided in interim reporting periods. ASU 2025-11 is effective for interim reporting periods within annual reporting period beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of ASU 2025-11 on its consolidated financial statements and related disclosures.

In December 2025, the FASB issued ASU No. 2025-12, Codification Improvements to address suggestions received from stakeholders on the Accounting Standards Codification (the Codification) and to make other incremental improvements to U.S. GAAP. The update represents changes to the Codification that clarify, correct errors in, or make other improvements to a variety of topics that are intended to make it easier to understand and apply. ASU No. 2025-12 is effective for interim reporting periods within annual reporting period beginning after December 15, 2026, with early adoption permitted. The Company is currently evaluating the impact of adopting ASU No. 2024-12 on its consolidated financial statements and related disclosures.

In September 2025, the FASB issued ASU 2025-06, Intangibles — Goodwill and Other — Internal-Use Software (ASU 2025-06), which removes all references to prescriptive and sequential software development stages. An entity will be required to start capitalizing software costs when (i) management has authorized and committed to funding the software project and (ii) it is probable that the project will be completed and the software will be used to perform the function intended. ASU 2025-06 is effective for interim reporting periods within annual reporting period beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of adopting ASU No. 2025-06 on its consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU No. 2024-03 Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disaggregated disclosure of certain costs and expenses on an interim and annual basis. ASU No. 2024-03 is effective for interim reporting periods within annual reporting period beginning after December 15, 2027,

with early adoption permitted. The disclosure updates are required to be applied prospectively with the option for retrospective application. The Company is currently evaluating the impact of adopting ASU No. 2024-03 on its consolidated financial statements and related disclosures.