JOHN DOWNING - 05 May 2025 Form 4 Insider Report for NETSCOUT SYSTEMS INC (NTCT)

Role: EVP, World-Wide Sales
Signature: /s/ Anthony Piazza, Attorney-in-Fact
Issuer symbol: NTCT
Transactions as of: 05 May 2025
Net transactions value: $0
Form type: 4
Filing time: 07 May 2025, 18:00:16 UTC
Previous filing: 19 Feb 2025
Next filing: 08 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
DOWNING JOHN	EVP, World-Wide Sales	C/O NETSCOUT SYSTEMS, INC., 310 LITTLETON ROAD, WESTFORD	/s/ Anthony Piazza, Attorney-in-Fact	07 May 2025	0001232878

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	NTCT	Restricted Stock Unit	Award		+21,600	+37%		79,650	05 May 2025	Common Stock	21,600		Direct	F1, F2, F3
transaction	NTCT	Performance Stock Unit	Award		+14,400	+26%		69,120	05 May 2025	Common Stock	14,400		Direct	F1, F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price is N/A.
F2	The restricted stock units vest in four equal annual installments with the first installment vesting on May 5, 2026.
F3	Date is N/A.
F4	The performance stock units shall vest in a range of 0% to 100% upon the determination of the Compensation Committee of the Board of the attainment of the required relative total shareholder return over the 36-month period commencing on May 5, 2025, and ending on May 4, 2028.