6. Intangible Assets, Net Intangible assets as of March 31, 2026 and December 31, 2025 consisted of the following (in thousands): | | | | | | | | | | | March 31, | | December 31, | | Estimated | | | 2026 | | 2025 | | Useful Life | In-process research and development | | $ | 1,292 | | $ | 1,292 | | Indefinite | License | | | 45,801 | | | 46,630 | | Indefinite | Trade names | | | 3,100 | | | 3,156 | | 10 years | Accumulated amortization | | | (135) | | | (59) | | | Trade names net carrying value | | | 2,965 | | | 3,097 | | | Customer relationships | | | 2,233 | | | 2,274 | | 4 years | Accumulated amortization | | | (243) | | | (105) | | | Customer relationships net carrying value | | | 1,990 | | | 2,169 | | | Total intangible assets, net | | $ | 52,048 | | $ | 53,188 | | |
The amortization expense related to the finite-lived intangibles was approximately $0.2 million for the three months ended March 31, 2026. As of March 31, 2026, the Company’s estimate of amortization for finite-lived intangibles for each of the five succeeding fiscal years and thereafter was as follows: | | | | Remaining period in 2026 | | $ | 651 | Year ended December 31, 2027 | | | 868 | Year ended December 31, 2028 | | | 868 | Year ended December 31, 2029 | | | 765 | Year ended December 31, 2030 | | | 310 | Thereafter | | | 1,493 | | | $ | 4,955 |
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