| Schedule of Segment Reporting Information, by Segment |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2026 | | (in thousands) | Gevo | | GevoFuels | | GevoRNG | | GevoND | | Consolidated | | Revenues | $ | 1,526 | | | $ | — | | | $ | 4,447 | | | $ | 40,528 | | | $ | 46,501 | | | Less: | | | | | | | | | | | Depreciation and amortization | 923 | | | — | | | 1,057 | | | 4,804 | | | 6,784 | | | Research and development expense | 440 | | | — | | | — | | | — | | | 440 | | | Project development costs | 1,724 | | | 457 | | | — | | | 222 | | | 2,403 | | | Impairment of long-lived assets | 1,382 | | | 134,406 | | | — | | | — | | | 135,788 | | | Other expenses | 14,267 | | | 39,782 | | | 2,207 | | | 16,536 | | | 72,792 | | | Income (loss) from operations | (17,210) | | | (174,645) | | | 1,183 | | | 18,966 | | | (171,706) | | | Interest expense | — | | | — | | | (2,330) | | | (3,301) | | | (5,631) | | | | | | | | | | | | | Interest and investment income, net of other expense | 1,137 | | | 8 | | | (20) | | | (49) | | | 1,076 | | | Consolidated net income (loss) | $ | (16,073) | | | $ | (174,637) | | | $ | (1,167) | | | $ | 15,616 | | | $ | (176,261) | | | | | | | | | | | | | Acquisitions of property, plant, and equipment | $ | 4,660 | | | $ | 369 | | | $ | 179 | | | $ | 7,286 | | | $ | 12,494 | | | Goodwill as of June 30, 2026 | $ | 3,790 | | | $ | — | | | $ | — | | | $ | 39,768 | | | $ | 43,558 | | | Total assets as of June 30, 2026 | $ | 114,239 | | | $ | 46,040 | | | $ | 81,570 | | | $ | 248,865 | | | $ | 490,714 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2025 | | (in thousands) | Gevo | | GevoFuels | | GevoRNG | | GevoND | | Consolidated | | Revenues | $ | 1,952 | | | $ | — | | | $ | 4,282 | | | $ | 37,179 | | | $ | 43,413 | | | Less: | | | | | | | | | | | Depreciation and amortization | 779 | | | — | | | 1,374 | | | 5,060 | | | 7,213 | | | Research and development expense | 934 | | | — | | | — | | | — | | | 934 | | | Project development costs | 417 | | | 376 | | | — | | | 38 | | | 831 | | | Other expenses | 12,188 | | | — | | | 1,452 | | | 14,999 | | | 28,639 | | | Income (loss) from operations | (12,366) | | | (376) | | | 1,456 | | | 17,082 | | | 5,796 | | | Interest expense | (183) | | | — | | | (850) | | | (3,312) | | | (4,345) | | | | | | | | | | | | | Interest and investment income, net of other expense | 1,205 | | | — | | | — | | | 117 | | | 1,322 | | | Consolidated net income (loss) | $ | (11,326) | | | $ | (376) | | | $ | 586 | | | $ | 13,845 | | | $ | 2,729 | | | | | | | | | | | | | Acquisitions of property, plant, and equipment | $ | 2,460 | | | $ | 9,587 | | | $ | 870 | | | $ | 396 | | | $ | 13,313 | | | Goodwill as of December 31, 2025 | $ | 3,790 | | | $ | — | | | $ | — | | | $ | 39,768 | | | $ | 43,558 | | | Total assets as of December 31, 2025 | $ | 124,198 | | | $ | 235,034 | | | $ | 88,876 | | | $ | 270,821 | | | $ | 718,929 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2026 | | (in thousands) | Gevo | | GevoFuels | | GevoRNG | | GevoND | | Consolidated | | Revenues | $ | 1,888 | | | $ | — | | | $ | 9,004 | | | $ | 78,557 | | | $ | 89,449 | | | Less: | | | | | | | | | | | Depreciation and amortization | 1,825 | | | — | | | 2,005 | | | 9,814 | | | 13,644 | | | Research and development expense | 1,939 | | | — | | | — | | | — | | | 1,939 | | | Project development costs | 4,080 | | | 1,141 | | | — | | | 222 | | | 5,443 | | | Impairment of long-lived assets | 1,382 | | | 134,406 | | | — | | | — | | | 135,788 | | | Other expenses | 26,694 | | | 39,782 | | | 4,853 | | | 37,910 | | | 109,239 | | | Income (loss) from operations | (34,032) | | | (175,329) | | | 2,146 | | | 30,611 | | | (176,604) | | | Interest expense | (21) | | | — | | | (4,347) | | | (6,433) | | | (10,801) | | | Loss on extinguishment of bonds | — | | | — | | | (10,304) | | | — | | | (10,304) | | | Interest and investment income, net of other expense | 787 | | | (468) | | | (76) | | | (146) | | | 97 | | | Consolidated net income (loss) | $ | (33,266) | | | $ | (175,797) | | | $ | (12,581) | | | $ | 24,032 | | | $ | (197,612) | | | | | | | | | | | | | Acquisitions of property, plant, and equipment | $ | 10,407 | | | $ | 1,070 | | | $ | 241 | | | $ | 9,651 | | | $ | 21,369 | | | Goodwill as of June 30, 2026 | $ | 3,790 | | | $ | — | | | $ | — | | | $ | 39,768 | | | $ | 43,558 | | | Total assets as of June 30, 2026 | $ | 114,239 | | | $ | 46,040 | | | $ | 81,570 | | | $ | 248,865 | | | $ | 490,714 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | (in thousands) | Gevo | | GevoFuels | | GevoRNG | | GevoND | | Consolidated | | Revenues | $ | 2,576 | | | $ | — | | | $ | 9,953 | | | $ | 59,993 | | | $ | 72,522 | | | Less: | | | | | | | | | | | Depreciation and amortization | 1,526 | | | — | | | 2,777 | | | 8,532 | | | 12,835 | | | Research and development expense | 1,986 | | | — | | | — | | | — | | | 1,986 | | | Project development costs | 4,694 | | | 1,100 | | | — | | | 39 | | | 5,833 | | | Other expenses | 27,720 | | | — | | | 5,251 | | | 33,240 | | | 66,211 | | | Income (loss) from operations | (33,350) | | | (1,100) | | | 1,925 | | | 18,182 | | | (14,343) | | | Interest expense | (374) | | | — | | | (1,754) | | | (5,511) | | | (7,639) | | | | | | | | | | | | | Interest and investment income, net of other expense | 2,967 | | | — | | | — | | | 125 | | | 3,092 | | | Consolidated net income (loss) | $ | (30,833) | | | $ | (1,100) | | | $ | 151 | | | $ | 12,738 | | | $ | (19,044) | | | | | | | | | | | | | Acquisitions of property, plant, and equipment | $ | 2,731 | | | $ | 14,810 | | | $ | 1,210 | | | $ | 396 | | | $ | 19,147 | | | Goodwill as of December 31, 2025 | $ | 3,790 | | | $ | — | | | $ | — | | | $ | 39,768 | | | $ | 43,558 | | | Total assets as of December 31, 2025 | $ | 124,198 | | | $ | 235,034 | | | $ | 88,876 | | | $ | 270,821 | | | $ | 718,929 | |
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