XML 37 R26.htm IDEA: XBRL DOCUMENT
v3.26.1

Note 17 - Stock-based Compensation Plan | 6 Months Ended
--- | ---
Jun. 30, 2026
Notes to Financial Statements |
Share-Based Payment Arrangement [Text Block] | 17. STOCK-BASED COMPENSATION PLANS ​ On April 30, 2025, our stockholders approved the Huntsman Corporation 2025 Stock Incentive Plan (the ‘‘2025 Stock Incentive Plan’’), which reserved 4.65 million shares for issuance. Each of the Huntsman Corporation 2016 Stock Incentive Plan and the Huntsman Corporation Stock Incentive Plan, as amended and restated (together, the “Prior Plans”), remain in effect for outstanding awards granted pursuant to the Prior Plans, but no further awards may be granted under the Prior Plans. Under the 2025 Stock Incentive Plan we may grant nonstatutory stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units, stock awards, dividend equivalents, cash awards and other stock-based awards to our employees, directors and consultants and to employees and consultants of our subsidiaries, provided that incentive stock options may be granted solely to employees. The terms of the grants under the 2025 Stock Incentive Plan and the Prior Plans are fixed at the grant date. As of June 30, 2026, we had approximately 2 million shares remaining under the 2025 Stock Incentive Plan available for grant. Option awards have a maximum contractual term of 10 years and generally must have an exercise price at least equal to the market price of our common stock on the date the option award is granted. Outstanding stock-based awards generally vest over a three-year period. The compensation cost under the stock-based compensation plans for our Company and Huntsman International were as follows (dollars in millions):
|  | Three months ended |  |  | Six months ended |
|  | June 30, |  |  | June 30, |
|  | 2026 |  |  | 2025 |  |  | 2026 |  |  | 2025 |
Huntsman Corporation compensation cost |  | $ | 7 |  |  | $ | 7 |  |  | $ | 16 |  |  | $ | 16 |
Huntsman International compensation cost |  |  | 7 |  |  |  | 7 |  |  |  | 15 |  |  |  | 14 |
The total income tax benefit recognized in the condensed consolidated statements of operations for us and Huntsman International for stock-based compensation arrangements was approximately nil and $1 million for the six months ended June 30, 2026 and 2025, respectively. ​ Stock Options ​ The fair value of each stock option award was estimated on the date of grant using the Black-Scholes valuation model. Expected volatilities were based on the historical volatility of our common stock through the grant date. The expected term of options granted was estimated based on the contractual term of the instruments and employees’ expected exercise and post-vesting employment termination behavior. The risk-free rate for periods within the contractual life of the option was based on the U.S. Treasury yield curve in effect at the time of grant. During each of the six months ended June 30, 2026 and 2025, no stock options were granted. A summary of stock option activity under the stock-based compensation plans as of June 30, 2026 and changes during the six months then ended is presented below: ​
|  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |
|  |  |  |  |  | Weighted |  |  | average |  |  |  |  |
|  |  |  |  |  | average |  |  | remaining |  |  | Aggregate |
|  |  |  |  |  | exercise |  |  | contractual |  |  | intrinsic |
Option awards |  | Shares |  |  | price |  |  | term |  |  | value |
|  | (in thousands) |  |  |  |  |  |  | (years) |  |  | (in millions) |
Outstanding at January 1, 2026 |  |  | 2,030 |  |  | $ | 22.42 |  |  |  |  |  |  |  |  |
Exercised |  |  | (241 | ) |  |  | 8.86 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (45 | ) |  |  | 19.93 |  |  |  |  |  |  |  |  |
Outstanding and exercisable at June 30, 2026 |  |  | 1,744 |  |  |  | 24.37 |  |  |  | 2.6 |  |  | $ | — |
​ As of June 30, 2026, there was no unrecognized compensation cost related to nonvested stock option arrangements granted under the stock-based compensation plans. The total intrinsic value of stock options exercised during the six months ended June 30, 2026 and 2025 was approximately $1 million and nil, respectively. Cash received from stock options exercised during the six months ended June 30, 2026 and 2025 was approximately $2 million and nil, respectively. The cash tax benefit from stock options exercised during both of the six months ended June 30, 2026 and 2025 was approximately nil. Nonvested Shares ​ Nonvested shares granted under the stock-based compensation plans consist of restricted stock and performance share unit awards, which are accounted for as equity awards, and phantom stock, which is accounted for as a liability award because it can be settled in either stock or cash. The fair value of each restricted stock and phantom stock award is estimated to be the closing stock price of Huntsman’s stock on the date of grant. ​ For our performance share unit awards, the performance criteria are total stockholder return of our common stock relative to the total stockholder return of a specified industry peer group for the three-year performance periods. The fair value of each performance share unit award is estimated using a Monte Carlo simulation model that uses various assumptions, including an expected volatility rate and a risk-free interest rate. For the six months ended June 30, 2026 and 2025, the weighted-average expected volatility rate was 39.6% and 30.0%, respectively, and the weighted average risk-free interest rate was 3.49% and 4.30%, respectively. For the performance share unit awards granted during the six months ended June 30, 2026 and 2025, the number of shares earned varies based upon the Company achieving certain performance criteria over a three-year performance period. A summary of the status of our nonvested shares as of June 30, 2026 and changes during the six months then ended is presented below:
|  | Equity awards |  |  | Liability awards |
|  |  |  |  |  | Weighted |  |  |  |  |  |  | Weighted |
|  |  |  |  |  | average |  |  |  |  |  |  | average |
|  |  |  |  |  | grant-date |  |  |  |  |  |  | grant-date |
|  | Shares |  |  | fair value |  |  | Shares |  |  | fair value |
|  | (in thousands) |  |  |  |  |  |  | (in thousands) |  |  |  |  |
Nonvested at January 1, 2026 |  |  | 3,177 |  |  | $ | 24.63 |  |  |  | 295 |  |  | $ | 20.09 |
Granted |  |  | 2,153 |  |  |  | 15.27 |  |  |  | 297 |  |  |  | 13.27 |
Vested |  |  | (1,070 | ) | (1)(2) |  | 29.97 |  |  |  | (130 | ) |  |  | 22.07 |
Forfeited |  |  | (61 | ) |  |  | 17.57 |  |  |  | (6 | ) |  |  | 15.08 |
Nonvested at June 30, 2026 |  |  | 4,199 |  |  |  | 18.57 |  |  |  | 456 |  |  |  | 15.15 |
(1) | As of June 30, 2026, a total of 185,824 restricted stock units were vested but not yet issued, of which 62,170 vested during the six months ended June 30, 2026. These shares have not been reflected as vested shares in this table because, in accordance with the restricted stock unit agreements, shares of common stock are not issued for vested restricted stock units until termination of employment.
(2) | A total of 461,521 performance share unit awards are reflected in the vested shares in this table, which represents the target number of performance share unit awards for this grant and were included in the balance at December 31, 2025. Due to the target performance criteria not being met, these performance share unit awards were not issued.
As of June 30, 2026, there was approximately $47 million of total unrecognized compensation cost related to nonvested share compensation arrangements granted under the stock-based compensation plans. That cost is expected to be recognized over a weighted-average period of approximately 2.1 years. The value of share awards that vested during the six months ended June 30, 2026 and 2025 was approximately $35 million and $26 million, respectively. ​

X
- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (l) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/718/tableOfContent Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration