| Goodwill and Intangible Assets The Company’s goodwill and purchased intangible assets of March 31, 2026 and December 31, 2025 is as follows (in millions): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | March 31, 2026 | | December 31, 2025 | | | Gross | | Additions | | Accumulated Amortization | | Net | | Gross | | Accumulated Amortization | | Net | | Goodwill | | $ | 0.1 | | | $ | 2.3 | | | $ | — | | | $ | 2.4 | | | $ | 0.1 | | | $ | — | | | $ | 0.1 | | | | | | | | | | | | | | | | | Intangible assets: | | | | | | | | | | | | | | | Domain name | | $ | 0.5 | | | $ | — | | | $ | (0.2) | | | $ | 0.3 | | | $ | 0.5 | | | $ | (0.2) | | | $ | 0.3 | | Patents | | 36.0 | | | — | | | (1.8) | | | 34.2 | | | 36.0 | | | (0.8) | | | 35.2 | | | Developed Technology | | — | | | 2.8 | | | (0.1) | | | 2.7 | | | — | | | — | | | — | | Operating rights | | 44.8 | | | — | | | (0.4) | | | 44.4 | | | 44.8 | | | (0.1) | | | 44.7 | | Total purchased intangible assets | | $ | 81.3 | | | $ | 2.8 | | | $ | (2.5) | | | $ | 81.6 | | | $ | 81.3 | | | $ | (1.1) | | | $ | 80.2 | |
Amortization expense related to intangible assets is as follows: | | | | | | | | | | | | | Three Months Ended March 31, | | 2026 | | 2025 | Domain name (1) | $ | — | | | $ | — | | Patents | 1.0 | | | — | | | Developed technology | 0.1 | | | — | | Operating rights | 0.3 | | | — | | Total amortization expense | $ | 1.4 | | | $ | — | |
(1) The amortization related to domain name is less than $0.1 million for the three months ended March 31, 2026 and 2025.The expected future annual amortization expense of intangible assets as of March 31, 2026 is presented below (in millions): | | | | | | | 2026 | $ | 4.1 | | | 2027 | 5.5 | | | 2028 | 5.5 | | | 2029 | 5.5 | | | 2030 | 5.5 | | | Thereafter | 55.5 | | Total | $ | 81.6 | |
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