FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * SZABADOS MICHAEL 2. Issuer Name and Ticker or Trading Symbol NETSCOUT SYSTEMS INC [NTCT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O NETSCOUT SYSTEMS, INC., 310 LITTLETON ROAD 3. Date of Earliest Transaction (Month/Day/Year) 06/19/2026 (Street) WESTFORD, MA 01886 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 06/19/2026 M(1) 6,048 A (2) 47,436 D Common Stock 06/19/2026 F(3) 1,782 D $39.67(4) 45,654 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Performance Stock Unit

(2)

06/19/2026

M

6,048

(5)

(6)

Common Stock

6,048

(2)

16,800(7)(8)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
SZABADOS MICHAEL C/O NETSCOUT SYSTEMS, INC. 310 LITTLETON ROAD WESTFORD, MA 01886	X

Signatures

/s/ Jeff Levinson by Power of Attorney		06/23/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	The shares of Common Stock were acquired upon the vesting of certain performance stock units previously granted to the reporting person.
(2)	Price is N/A.
(3)	The shares of Common Stock were withheld to satisfy the reporting person's tax withholding obligation upon the vesting of performance stock units.
(4)	Represents the closing price of the Company's Common Stock on June 18, 2026.
(5)	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 June 15, 2023, and ending on June 14, 2026.
(6)	Date is N/A.
(7)	On June 15, 2023, the Reporting Person was granted 16,800 performance stock units (the "Prior PSUs"), which 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 June 15, 2023, and ending on June 14, 2026. On June 19, 2026, the Compensation Committee of the Board determined that 36% of the Prior PSUs shall vest.
(8)	Reflects the number of performance stock units ("PSUs") held by the Reporting Person after the forfeiture of unachieved PSUs.

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