NETSCOUT SYSTEMS INC Goodwill & Intangibles Disclosure

NOTE 9 – GOODWILL & INTANGIBLE ASSETS

Goodwill

The Company has one reporting unit. Goodwill is tested for impairment at a reporting unit level at least annually, as of January 31, and on an interim basis if an event occurs or circumstances change (a "Triggering Event") that would indicate the fair value of the reporting unit is below its carrying value.

During fiscal year 2024, the Company recorded $217.3 million in goodwill impairment charges as a result of the sustained decrease in the Company's stock price and overall market capitalization. During the first quarter of fiscal year 2025, due to the continued decrease in the Company's stock price and overall market capitalization, along with other qualitative considerations including the continued impact from the conditions in the macroeconomic environment, it was determined a Triggering Event occurred, indicating goodwill may be impaired. Accordingly, the Company conducted a quantitative impairment test of its goodwill at June 30, 2024. The Company estimated the implied fair value of the reporting unit using a market approach. As a result of the quantitative impairment test performed during the first quarter of fiscal year 2025, the Company determined goodwill was impaired and recorded a goodwill impairment charge of $427.0 million during the three months ended June 30, 2024.

During fiscal year 2026 and 2025, the Company completed its annual goodwill impairment tests using the qualitative assessment, and the Company concluded that it was more likely than not that the fair value of the reporting unit exceeded its carrying value.

The Company will continue to monitor relevant facts and circumstances, including future changes in its stock price. The Company may be required to record additional goodwill impairment charges. While management cannot predict if or when additional goodwill impairments may occur, future goodwill impairments could have material adverse effects on the Company's results of operations and financial condition.

At March 31, 2026 and 2025, the carrying amounts of goodwill were $1.1 billion and $1.1 billion, respectively.

Intangible Assets

The net carrying amounts of intangible assets were $214.3 million and $258.7 million at March 31, 2026 and 2025, respectively. Intangible assets acquired in a business combination are recorded under the acquisition method of accounting at their estimated fair values at the date of acquisition. The Company amortizes intangible assets over their estimated useful lives.

The Company reviews long-lived assets including tangible and definite-lived intangible assets for impairment when an event occurs that may indicate potential impairment. In conjunction with the goodwill impairment analysis performed at June 30, 2024, the Company conducted an impairment test of its long-lived assets at June 30, 2024. Based on this assessment, the Company concluded that the carrying values of the Company's long-lived assets were recoverable. During the fiscal year ended March 31, 2026 and 2025, the Company performed a quarterly Triggering Event assessment and concluded no events or circumstances occurred that indicated intangible assets may be impaired. However, if future events occur or if business conditions deteriorate, the Company may be required to record an impairment loss, and or accelerate the amortization of definite-live intangible assets in the future, which could be material to its results of operations and financial condition.

Amortization included as cost of product revenue consists of amortization of developed technology, and distributor relationships and technology licenses. Amortization included as operating expense consists of all other intangible assets. The following table provides a summary of amortization expense during the fiscal years ended March 31, 2026, 2025, and 2024 (in thousands).