APPIAN CONSTRUCTION, INC.

of service. For the years ended December 31, 2025, 2024, and 2023, we incurred $ 13.0 million, $ 12.8 million, and $ 12.9 million, respectively, in contribution expense related to employer matching contributions. 101 APPIAN CORPORATION NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 16. Investments and Fair Value Measurements Fair Value Measurements U.S. GAAP establishes a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The hierarchy requires us to use observable inputs when available and to minimize the use of unobservable inputs when determining fair value. The three tiers are def

of their earned annual bonuses for 2025, otherwise payable in cash, in the form of RSUs. The RSUs will be granted by our Board of Directors during the first quarter of 2026 and be fully vested upon grant. The portion of the 2025 annual bonus to be paid in the form of RSUs is recorded as stock-based compensation expense while the related obligations are recorded as liabilities in the ‘Accrued compensation and related benefits’ line item on our consolidated balance sheets. During the year ended December 31, 2025, we recognized $ 5.6 million of stock-based compensation related to this program. The following table summarizes RSU activity for the years ended December 31, 2025, 2024, and 2023: Number of Shares Weighted Average Grant Date Fair Value Non-vested and outstanding at December 31, 2022

sh receipts from committed license and cloud arrangements; • Our expectation that cost of revenue, sales and marketing expenses, research and development expenses, and general and administrative expenses will continue to increase in absolute dollar values; • The fluctuation of subscriptions gross margin and professional services gross margin over time; • Our ability to stay abreast of new or modified laws and regulations that currently apply or become applicable to our business both in the United States and internationally; • Our ability to collect on the judgment preservation insurance; • Our ability to maintain, protect, and enhance our intellectual property; and • Costs associated with defending intellectual property infringement and other claims. These statements represent the beliefs