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| Three Months Ended June 30, | | Six Months Ended June 30, |
| 2026 | | 2025 | | 2026 | | 2025 |
| Revenues reportable segments: | | | | | | | |
Commercial Products | $ | 52.4 | | | $ | 67.5 | | | $ | 95.3 | | | $ | 112.8 | |
| MCM Products | 168.0 | | | 58.4 | | | 269.8 | | | 215.0 | |
| Reconciliation of revenue: | 220.4 | | | 125.9 | | | 365.1 | | | 327.8 | |
All other revenues (1) | 13.9 | | | 15.0 | | | 25.3 | | | 35.3 | |
| Total revenues | $ | 234.3 | | | $ | 140.9 | | | $ | 390.4 | | | $ | 363.1 | |
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| Cost of sales reportable segments: | | | | | | | |
Commercial Products (2) | $ | 36.2 | | | $ | 36.2 | | | $ | 63.0 | | | $ | 60.7 | |
MCM Products (3) | 51.9 | | | 25.9 | | | 88.1 | | | 74.8 | |
| Total of reportable segments | $ | 88.1 | | | $ | 62.1 | | | $ | 151.1 | | | $ | 135.5 | |
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| Segment adjusted gross margin reportable segments: | | | | | | | |
Commercial Products (2) | $ | 16.2 | | | $ | 31.3 | | | $ | 32.3 | | | $ | 52.1 | |
MCM Products (3) | 116.1 | | | 32.5 | | | 181.7 | | | 140.2 | |
| Total of reportable segments | $ | 132.3 | | | $ | 63.8 | | | $ | 214.0 | | | $ | 192.3 | |
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| Reconciliation to income before income taxes: | | | | | | | |
All other revenues less other costs of revenue (1) | $ | 5.9 | | | $ | 10.3 | | | $ | 8.9 | | | $ | 16.8 | |
| Amortization of intangible assets | (17.2) | | | (16.2) | | | (33.7) | | | (32.5) | |
| Severance and restructuring benefit | — | | | 0.2 | | | — | | | 1.0 | |
| Inventory step-up provision | (0.2) | | | — | | | (0.3) | | | (1.8) | |
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| Stock-based compensation expense | (0.8) | | | (0.3) | | | (1.3) | | | (0.6) | |
| Impairment of long-lived assets | (191.3) | | | — | | | (191.3) | | | — | |
| Research and development | (9.2) | | | (12.5) | | | (19.7) | | | (27.6) | |
| Selling, general and administrative | (44.6) | | | (43.7) | | | (91.2) | | | (96.1) | |
| Interest expense | (10.0) | | | (14.7) | | | (21.0) | | | (29.4) | |
| Loss on assets held-for-sale | (10.7) | | | — | | | (10.7) | | | (12.2) | |
| Loss on debt extinguishment | (20.5) | | | — | | | (20.5) | | | — | |
| Other, net | — | | | (3.7) | | | 13.9 | | | 66.0 | |
| Income (loss) before income taxes | $ | (166.3) | | | $ | (16.8) | | | $ | (152.9) | | | $ | 75.9 | |
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(1) “All other revenues” and “All other revenues less other costs of revenue” include Services and Contracts and grants revenue, and Services and Contracts and grants revenue less Cost of services, respectively. |
(2) For 2026, excludes $0.1 million of the portion of stock-based compensation expense recorded as cost of sales for both the three and six months ended June 30, 2026. For 2025, excludes $0.2 million of restructuring costs for both the three and six months ended June 30, 2025. |
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(3) For 2026, excludes $0.7 million and $1.2 million of the portion of stock-based compensation expense recorded as cost of sales, and $0.2 million and $0.3 million of inventory step-up provision for the three and six months ended June 30, 2026, respectively. For 2025, excludes $1.8 million of inventory step-up provision for the six months ended June 30, 2025, $0.4 million and $1.2 million of severance and restructuring benefit for the three and six months ended June 30, 2025, respectively, and $0.3 million and $0.6 million of the portion of stock-based compensation expense recorded as cost of sales for the three and six months ended June 30, 2025, respectively. |