10. GOODWILL & INTANGIBLE ASSETS

The carrying amount of goodwill at September 30, 2021 and 2020 was $262.3 million and $2.3 million, respectively, and has been recorded in connection with the Company’s acquisitions. The goodwill activity is as follows (in thousands):

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The Company has no accumulated impairment losses on goodwill.

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Intangible assets consisted of the following (in thousands):

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The Company recognized $4.4 million and $11.0 million of amortization expense during the three and nine months ended September 30, 2021, respectively. The Company recognized $0.1 million and $0.5 million of amortization expense during the three and nine months ended September 30, 2020, respectively.

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The Company expects to recognize the following amortization expense (in thousands):

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The weighted-average remaining amortization period is 9.7 years. Amortization of acquired technology, trade names, and customer relationships is recognized in cost of sales and research and development, research and development, and sales and marketing, respectively, in the condensed consolidated statements of operations.