6. GOODWILL AND INTANGIBLE ASSETS

Goodwill

Acquired Intangible Assets

Amortization expense on acquired intangible assets for the six months ended June 28, 2025, and June 29, 2024, was $16.5 and $15.7, respectively, reflected in amortization of intangible assets in the Consolidated Statements of Operations. Additionally, $0.2 and $0.4 of acquired amortization expense for the three and six months ended June 28, 2025, respectively, was reflected in cost of sales in the Consolidated Statement of Operations. Future estimated total amortization expense is presented below.

In January 2025, the Company began the early phases of restructuring the Helios Center of Engineering Excellence (“HCEE”). Consistent with the Company's previously announced restructuring plan, during the end of the second quarter 2025, management ceased operations at the San Antonio office and reassigned resources to the operations at our other major facilities across the business, and eliminated certain positions. As a result of this change in the HCEE business operations, the workforce intangible asset associated with the HCEE acquisition was reviewed by management and it was determined that the remaining net book value of the asset should be amortized over a useful life ending during the second quarter of 2025. This resulted in increases of $0.3 and $0.8 amortization expense for the three and six months ending June 28, 2025, respectively, associated with this intangible asset.