Huntsman Corporation Annual report [Section 13 and 15(d), not S-K Item 405]

[1]	Geographic information for revenues is based upon countries into which product is sold.
[2]	Variable direct costs primarily include raw materials, utilities and freight-related costs.
[3]	Adjusted fixed costs primarily include personnel and maintenance costs at our manufacturing facilities, selling, general and administrative expenses and research and development expenses, less depreciation and amortization and an adjustment to remove the related effects of restructuring, impairment and plant closing and transition costs.
[4]	Other segment items include other operating and non-operating income and expense items and foreign currency exchange effects, less adjustments to remove the related effects of primarily the following items: business acquisition and integration gain (expenses) and purchase accounting inventory adjustments, net; certain legal and other settlements and related income (expenses), net; amortization of pension and postretirement actuarial losses; loss on sale of business/assets; and restructuring, impairment and plant closing and transition costs.
[5]	We use segment adjusted EBITDA as the measure of each segment’s profit or loss. Segment adjusted EBITDA is the measure that our chief operating decision maker (“CODM”), who has been determined to be our Chief Executive Officer, uses to make decisions about resources to be allocated to the segments and assess their financial performance. Our CODM evaluates segment adjusted EBITDA through the annual budget process as well as through ongoing periodic reviews of forecasts, budget-to-actual variances, changes from prior periods and when comparing the results of each reportable operating segment with one another. Segment adjusted EBITDA is defined as net income of Huntsman Corporation or Huntsman International, as appropriate, before interest, income tax, depreciation and amortization, net income attributable to noncontrolling interests and certain Corporate and other items, as well as eliminating the following adjustments: (a) business acquisition and integration gain (expenses) and purchase accounting inventory adjustments, net; (b) certain legal and other settlements and related income (expenses), net; (c) loss on sale of business/assets; (d) amortization of pension and postretirement actuarial losses; (e) restructuring, impairment, plant closing and transition costs; (f) (loss) income from discontinued operations, net of tax; (g) fair value adjustments to Venator investment, net and other tax matter adjustments; (h) loss on dissolution of subsidiaries; and (i) certain nonrecurring information technology project implementation costs.
[6]	Corporate and other costs, net includes unallocated corporate overhead, unallocated foreign exchange gains and losses, LIFO inventory valuation reserve adjustments, nonoperating income and expense and gains and losses on the disposition of corporate assets.
[7]	Certain legal and other settlements and related income (expenses), net includes approximately $33 million for income associated with a litigation matter during the year ended December 31, 2025 (see “Note 21. Commitments and Contingencies—Legal Matters” to our consolidated financial statements) and approximately $(10) million related to the settlement of a claim in connection with a commercial dispute during the year ended December 31, 2024.
[8]	Includes costs associated with transition activities relating primarily to our program to realign our cost structure in Europe and our Corporate program to optimize our global approach to managed services in various information technology functions.
[9]	Loss on dissolution of subsidiaries for the year ended December 31, 2024 relates to the elimination and non-cash recognition of cumulative translation adjustments from accumulated other comprehensive loss due to the liquidation of certain subsidiaries.
[10]	A reconciliation of total reportable segments’ revenues to total consolidated revenues is provided in “Note 18. Revenue Recognition.”