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Note 14 - Accumulated Other Comprehensive Loss | 6 Months Ended
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Jun. 30, 2026
Notes to Financial Statements |
Comprehensive Income (Loss) Note [Text Block] | 14. ACCUMULATED OTHER COMPREHENSIVE LOSS ​ The components of other comprehensive income (loss) and changes in accumulated other comprehensive loss by component were as follows (dollars in millions): ​ Huntsman Corporation ​
|  |  |  |  |  | Pension |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Foreign |  |  | and other |  |  |  |  |  |  |  |  |  |  | Amounts |  |  | Amounts |
|  | currency |  |  | postretirement |  |  |  |  |  |  |  |  |  |  | attributable to |  |  | attributable to |
|  | translation |  |  | benefits |  |  |  |  |  |  |  |  |  |  | noncontrolling |  |  | Huntsman |
|  | adjustments(1) |  |  | adjustments(2) |  |  | Other, net |  |  | Total |  |  | interests |  |  | Corporation |
Beginning balance, January 1, 2026 |  | $ | (543 | ) |  | $ | (490 | ) |  | $ | 4 |  |  | $ | (1,029 | ) |  | $ | 23 |  |  | $ | (1,006 | )
Other comprehensive income before reclassifications, gross |  |  | 4 |  |  |  | — |  |  |  | 1 |  |  |  | 5 |  |  |  | (5 | ) |  |  | — |
Tax impact |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | )
Amounts reclassified from accumulated other comprehensive loss, gross(3) |  |  | 7 |  |  |  | 10 |  |  |  | — |  |  |  | 17 |  |  |  | — |  |  |  | 17 |
Tax impact |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | )
Net current-period other comprehensive income |  |  | 10 |  |  |  | 9 |  |  |  | 1 |  |  |  | 20 |  |  |  | (5 | ) |  |  | 15 |
Ending balance, June 30, 2026 |  | $ | (533 | ) |  | $ | (481 | ) |  | $ | 5 |  |  | $ | (1,009 | ) |  | $ | 18 |  |  | $ | (991 | )
(1) | Amounts are net of tax of $52 million as of both June 30, 2026 and January 1, 2026.
​
(2) | Amounts are net of tax of $49 million and $50 million as of June 30, 2026 and January 1, 2026, respectively.
​
(3) | The foreign currency translation adjustment reclassification amount related to the sale of our Gomet business and was recorded in gain on sale of business, net in our condensed consolidated statements of operations. See tables below for details about pension and other postretirement benefits reclassifications.
​
|  |  |  |  |  | Pension |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Foreign |  |  | and other |  |  |  |  |  |  |  |  |  |  | Amounts |  |  | Amounts |
|  | currency |  |  | postretirement |  |  |  |  |  |  |  |  |  |  | attributable to |  |  | attributable to |
|  | translation |  |  | benefits |  |  |  |  |  |  |  |  |  |  | noncontrolling |  |  | Huntsman |
|  | adjustments(1) |  |  | adjustments(2) |  |  | Other, net |  |  | Total |  |  | interests |  |  | Corporation |
Beginning balance, January 1, 2025 |  | $ | (675 | ) |  | $ | (552 | ) |  | $ | — |  |  | $ | (1,227 | ) |  | $ | 27 |  |  | $ | (1,200 | )
Other comprehensive income (loss) before reclassifications, gross |  |  | 94 |  |  |  | (12 | ) |  |  | 6 |  |  |  | 88 |  |  |  | — |  |  |  | 88 |
Tax impact |  |  | 9 |  |  |  | — |  |  |  | — |  |  |  | 9 |  |  |  | — |  |  |  | 9 |
Amounts reclassified from accumulated other comprehensive loss, gross(3) |  |  | — |  |  |  | 10 |  |  |  | — |  |  |  | 10 |  |  |  | — |  |  |  | 10 |
Tax impact |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | )
Net current-period other comprehensive income (loss) |  |  | 103 |  |  |  | (3 | ) |  |  | 6 |  |  |  | 106 |  |  |  | — |  |  |  | 106 |
Ending balance, June 30, 2025 |  | $ | (572 | ) |  | $ | (555 | ) |  | $ | 6 |  |  | $ | (1,121 | ) |  | $ | 27 |  |  | $ | (1,094 | )
(1) | Amounts are net of tax of $51 million and $60 million as of June 30, 2025 and January 1, 2025, respectively.
​
(2) | Amounts are net of tax of $60 million and $61 million as of June 30, 2025 and January 1, 2025, respectively.
​
(3) | See tables below for details about pension and other postretirement benefits reclassifications.
​
|  | Three months ended June 30, |  |  |
|  | 2026 |  |  | 2025 |  |  |
|  | Amounts reclassified |  |  | Amounts reclassified |  |  | Affected line item in
|  | from accumulated |  |  | from accumulated |  |  | the statement
Details about accumulated other |  | other |  |  | other |  |  | where net income
comprehensive loss components(1)(2): |  | comprehensive loss |  |  | comprehensive loss |  |  | is presented
Amortization of pension and other postretirement benefits: |  |  |  |  |  |  |  |  |  |
Prior service credit |  | $ | (2 | ) |  | $ | (2 | ) | (3) | Other income, net
Actuarial loss |  |  | 7 |  |  |  | 8 |  | (3) | Other income, net
|  | 5 |  |  | 6 |  |  |
|  |  | — |  |  |  | (1 | ) |  | Income tax
Total reclassifications for the period |  | $ | 5 |  |  | $ | 5 |  |  |
|  | Six months ended June 30, |  |  |
|  | 2026 |  |  | 2025 |  |  |
|  | Amounts reclassified |  |  | Amounts reclassified |  |  | Affected line item in
|  | from accumulated |  |  | from accumulated |  |  | the statement
Details about accumulated other |  | other |  |  | other |  |  | where net income
comprehensive loss components(1)(2): |  | comprehensive loss |  |  | comprehensive loss |  |  | is presented
Amortization of pension and other postretirement benefits: |  |  |  |  |  |  |  |  |  |
Prior service credit |  | $ | (4 | ) |  | $ | (4 | ) | (3) | Other income, net
Actuarial loss |  |  | 14 |  |  |  | 15 |  | (3) | Other income, net
Settlement gain |  |  | — |  |  |  | (1 | ) | (3) | Other income, net
|  |  | 10 |  |  |  | 10 |  |  |
|  |  | (1 | ) |  |  | (1 | ) |  | Income tax
Total reclassifications for the period |  | $ | 9 |  |  | $ | 9 |  |  |
(1) | Details of amounts reclassified from accumulated other comprehensive loss relate only to pension and other postretirement benefits.
(2) | Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations.
​
(3) | These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See “Note 12. Employee Benefit Plans.”
​ Huntsman International ​
|  |  |  |  |  | Pension |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Foreign |  |  | and other |  |  |  |  |  |  |  |  |  |  | Amounts |  |  | Amounts |
|  | currency |  |  | postretirement |  |  |  |  |  |  |  |  |  |  | attributable to |  |  | attributable to |
|  | translation |  |  | benefits |  |  |  |  |  |  |  |  |  |  | noncontrolling |  |  | Huntsman |
|  | adjustments(1) |  |  | adjustments(2) |  |  | Other, net |  |  | Total |  |  | interests |  |  | International |
Beginning balance, January 1, 2026 |  | $ | (547 | ) |  | $ | (466 | ) |  | $ | — |  |  | $ | (1,013 | ) |  | $ | 23 |  |  | $ | (990 | )
Other comprehensive income before reclassifications, gross |  |  | 3 |  |  |  | — |  |  |  | 1 |  |  |  | 4 |  |  |  | (5 | ) |  |  | (1 | )
Tax impact |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | )
Amounts reclassified from accumulated other comprehensive loss, gross(3) |  |  | 7 |  |  |  | 10 |  |  |  | — |  |  |  | 17 |  |  |  | — |  |  |  | 17 |
Tax impact |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | )
Net current-period other comprehensive income |  |  | 9 |  |  |  | 9 |  |  |  | 1 |  |  |  | 19 |  |  |  | (5 | ) |  |  | 14 |
Ending balance, June 30, 2026 |  | $ | (538 | ) |  | $ | (457 | ) |  | $ | 1 |  |  | $ | (994 | ) |  | $ | 18 |  |  | $ | (976 | )
(1) | Amounts are net of tax of $39 million as of both June 30, 2026 and January 1, 2026.
(2) | Amounts are net of tax of $73 million and $74 million as of June 30, 2026 and January 1, 2026, respectively.
​
(3) | The foreign currency translation adjustment reclassification amount related to the sale of our Gomet business and was recorded in gain on sale of business, net in our condensed consolidated statements of operations. See tables below for details about pension and other postretirement benefits reclassifications.
​
|  |  |  |  |  | Pension |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Foreign |  |  | and other |  |  |  |  |  |  |  |  |  |  | Amounts |  |  | Amounts |
|  | currency |  |  | postretirement |  |  |  |  |  |  |  |  |  |  | attributable to |  |  | attributable to |
|  | translation |  |  | benefits |  |  |  |  |  |  |  |  |  |  | noncontrolling |  |  | Huntsman |
|  | adjustments(1) |  |  | adjustments(2) |  |  | Other, net |  |  | Total |  |  | interests |  |  | International |
Beginning balance, January 1, 2025 |  | $ | (680 | ) |  | $ | (528 | ) |  | $ | (4 | ) |  | $ | (1,212 | ) |  | $ | 27 |  |  | $ | (1,185 | )
Other comprehensive income (loss) before reclassifications, gross |  |  | 94 |  |  |  | (12 | ) |  |  | 6 |  |  |  | 88 |  |  |  | — |  |  |  | 88 |
Tax impact |  |  | 9 |  |  |  | — |  |  |  | — |  |  |  | 9 |  |  |  | — |  |  |  | 9 |
Amounts reclassified from accumulated other comprehensive loss, gross(3) |  |  | — |  |  |  | 10 |  |  |  | — |  |  |  | 10 |  |  |  | — |  |  |  | 10 |
Tax impact |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | ) |  |  | — |  |  |  | (1 | )
Net current-period other comprehensive income (loss) |  |  | 103 |  |  |  | (3 | ) |  |  | 6 |  |  |  | 106 |  |  |  | — |  |  |  | 106 |
Ending balance, June 30, 2025 |  | $ | (577 | ) |  | $ | (531 | ) |  | $ | 2 |  |  | $ | (1,106 | ) |  | $ | 27 |  |  | $ | (1,079 | )
(1) | Amounts are net of tax of $38 million and $47 million as of June 30, 2025 and January 1, 2025, respectively.
​
(2) | Amounts are net of tax of $84 million and $85 million as of June 30, 2025 and January 1, 2025 respectively.
​
(3) | See tables below for details about pension and other postretirement benefits reclassifications.
|  | Three months ended June 30, |  |  |
|  | 2026 |  |  | 2025 |  |  |
|  | Amounts reclassified |  |  | Amounts reclassified |  |  | Affected line item in
|  | from accumulated |  |  | from accumulated |  |  | the statement
Details about accumulated other |  | other |  |  | other |  |  | where net income
comprehensive loss components(1)(2): |  | comprehensive loss |  |  | comprehensive loss |  |  | is presented
Amortization of pension and other postretirement benefits: |  |  |  |  |  |  |  |  |  |
Prior service credit |  | $ | (2 | ) |  | $ | (2 | ) | (3) | Other income, net
Actuarial loss |  |  | 7 |  |  |  | 8 |  | (3) | Other income, net
|  | 5 |  |  | 6 |  |  |
|  |  | — |  |  |  | (1 | ) |  | Income tax
Total reclassifications for the period |  | $ | 5 |  |  | $ | 5 |  |  |
|  | Six months ended June 30, |  |  |
|  | 2026 |  |  | 2025 |  |  |
|  | Amounts reclassified |  |  | Amounts reclassified |  |  | Affected line item in
|  | from accumulated |  |  | from accumulated |  |  | the statement
Details about accumulated other |  | other |  |  | other |  |  | where net income
comprehensive loss components(1)(2): |  | comprehensive loss |  |  | comprehensive loss |  |  | is presented
Amortization of pension and other postretirement benefits: |  |  |  |  |  |  |  |  |  |
Prior service credit |  | $ | (4 | ) |  | $ | (4 | ) | (3) | Other income, net
Actuarial loss |  |  | 14 |  |  |  | 15 |  | (3) | Other income, net
Settlement gain |  |  | — |  |  |  | (1 | ) | (3) | Other income, net
|  |  | 10 |  |  |  | 10 |  |  |
|  |  | (1 | ) |  |  | (1 | ) |  | Income tax
Total reclassifications for the period |  | $ | 9 |  |  | $ | 9 |  |  |
(1) | Details of amounts reclassified from accumulated other comprehensive loss relate only to pension and other postretirement benefits.
(2) | Pension and other postretirement benefits amounts in parentheses indicate credits on our condensed consolidated statements of operations.
​
(3) | These accumulated other comprehensive loss components are included in the computation of net periodic pension costs. See “Note 12. Employee Benefit Plans.”
Items of other comprehensive income (loss) of our Company and our consolidated affiliates have been recorded net of tax, with the exception of the foreign currency translation adjustments related to subsidiaries with earnings permanently reinvested. The tax effect is determined based upon the jurisdiction where the income or loss was recognized and is net of valuation allowances. ​

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