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CASH, CASH EQUIVALENTS, MARKETABLE SECURITIES AND INVESTMENTS | 3 Months Ended
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Jun. 30, 2025
Investments, Debt and Equity Securities [Abstract] |
CASH, CASH EQUIVALENTS, MARKETABLE SECURITIES AND INVESTMENTS | NOTE 5 – CASH, CASH EQUIVALENTS, MARKETABLE SECURITIES AND INVESTMENTS The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents and those investments with original maturities greater than three months to be marketable securities. Cash and cash equi valents mainly consisted of U.S. government and municipal obligations, commercial paper, money market instruments and cash maintained with various financial institutions at June 30, 2025 and March 31, 2025. Marketable Securities The following is a summary of marketable securities held by NetScout at June 30, 2025, classified as short-term and long-term (in thousands):
| Amortized Cost |  | Unrealized (Losses) Gains |  | Fair Value
Type of security: |  |  |  |  |
U.S. government and municipal obligations | $ | 5,957 |  |  | $ | (1) |  |  | $ | 5,956 |
Commercial paper | 18,525 |  |  | — |  |  | 18,525 |
Corporate bonds | 997 |  |  | (1) |  |  | 996 |
Certificates of deposit | 1,263 |  |  | — |  |  | 1,263 |
Agency bonds | 955 |  |  | — |  |  | 955 |
Total short-term marketable securities | 27,697 |  |  | (2) |  |  | 27,695 |
U.S. government and municipal obligations | 976 |  |  | 2 |  |  | 978 |
Corporate bonds | 10,019 |  |  | — |  |  | 10,019 |
Total long-term marketable securities | 10,995 |  |  | 2 |  |  | 10,997 |
Total marketable securities | $ | 38,692 |  |  | $ | — |  |  | $ | 38,692 |
The following is a summary of marketable securities held by NetScout at March 31, 2025, classified as short-term and long-term (in thousands):
| Amortized Cost |  | Unrealized Gains (Losses) |  | Fair Value
Type of security: |  |  |  |  |
U.S. government and municipal obligations | $ | 4,413 |  |  | $ | 1 |  |  | $ | 4,414 |
Commercial paper | 17,358 |  |  | — |  |  | 17,358 |
Certificates of deposit | 505 |  |  | — |  |  | 505 |
Total short-term marketable securities | 22,276 |  |  | 1 |  |  | 22,277 |
U.S. government and municipal obligations | 1,005 |  |  | (1) |  |  | 1,004 |
Total long-term marketable securities | 1,005 |  |  | (1) |  |  | 1,004 |
Total marketable securities | $ | 23,281 |  |  | $ | — |  |  | $ | 23,281 |
Contractual maturities of the Company's marketable securities held at June 30, 2025 and March 31, 2025 were as follows (in thousands):
| June 30, 2025 |  | March 31, 2025
Available-for-sale securities: |  |  |
Due in 1 year or less | $ | 27,695 |  |  | $ | 22,277 |
Due after 1 year through 5 years | 10,997 |  |  | 1,004 |
| $ | 38,692 |  |  | $ | 23,281 |
Investments In February 2023, the Company entered into a forward share purchase agreement with Napatech A/S (Napatech), a publicly traded Danish company registered on the Oslo stock exchange, to purchase approximately 6.2 million shares of Napatech's common stock for $7.5 million. In April 2023, the Company settled the forward share purchase contract with Napatech in exchange for approximately 6.2 million shares of Napatech's common stock and recorded a $0.2 million change in the fair value of the derivative instrument in other income (expense), net within the Company's consolidated statement of operations during the three months ended June 30, 2023. As part of the agreement, the Company received the right to designate a representative to be nominated for election to the Napatech Board of Directors, which was approved by Napatech's Nomination Committee in April 2023. Subsequently in April 2025, the Company's representative to the Napatech Board resigned. As a result, the Company no longer holds a Board seat. The Company accounts for this investment under the equity method and has elected to apply the fair value option to th e investment. The Company records the investment at fair value at the end of each period based on the closing price of Napatech's stock and any change in fair value during the period is recorded in other income (expense), net within the Company's consolidated statement of operations. At June 30, 2025 and March 31, 2025, the fair value of the investment in Napatech was $15.2 million and $11.8 million, respectively, and was included in marketable securities and investments in the Company's consolidated balance sheet. During the three months ended June 30, 2025 and 2024, the Company recognized a $2.5 million gain and an $8.8 million gain, respectively, due to changes in the fair value of the equity investment in Napatech in other income (expense), net within the Company's consolidated statement of operations. For the three months ended June 30, 2025, the unrealized gain related to foreign currency translation on the equity investment in Napatech was $1.0 million. For the three months ended June 30, 2024, the unrealized gain related to foreign currency translation on the equity investment in Napatech was immaterial.

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- Definition The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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