John Downing - 19 Jun 2026 Form 4 Insider Report for NETSCOUT SYSTEMS INC (NTCT)

Reporting relationship: EVP, World-Wide Sales
Issuer ticker: NTCT
Reported as of: 19 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 23 Jun 2026, 16:17:24 UTC
Prior SEC filing: 17 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/ Jeff Levinson by Power of Attorney

Key filing fact

John Downing filed Form 4 for NETSCOUT SYSTEMS INC (NTCT) on 23 Jun 2026.

Key facts

This page summarizes John Downing's Form 4 filing for NETSCOUT SYSTEMS INC (NTCT).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 23 Jun 2026, 16:17.

Change

Previous filing in this sequence was filed on 17 Jun 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001232878 Primary reporting owner

DOWNING JOHN

Relationship: EVP, World-Wide Sales
Address: C/O NETSCOUT SYSTEMS, INC., 310 LITTLETON ROAD, WESTFORD
Signature: /s/ Jeff Levinson by Power of Attorney
Signature date: 23 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

NTCT transaction

Common Stock

Options Exercise

Transaction value
Shares: +5,184
Change %: +3.9%
Price
Shares after: 138,114
Date: 19 Jun 2026
Ownership: Direct
Footnotes: F1, F2

NTCT transaction

Common Stock

Tax liability

Transaction value
Shares: -2,305
Change %: -1.7%
Price: $39.67^*
Shares after: 135,809
Date: 19 Jun 2026
Ownership: Direct
Footnotes: F3, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

NTCT transaction Derivative

Performance Stock Unit

Options Exercise

Transaction value
Shares: -5,184
Change %: -11%
Price
Shares after: 43,200
Date: 19 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 5,184
Exercise price
Footnotes: F2, F5, F6, F7, F8

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 8 footnotes

Footnote F1

The shares of Common Stock were acquired upon the vesting of certain performance stock units previously granted to the reporting person.

Footnote F2

Price is N/A.

Footnote F3

The shares of Common Stock were withheld to satisfy the reporting person's tax withholding obligation upon the vesting of performance stock units.

Footnote F4

Represents the closing price of the Company's Common Stock on June 18, 2026.

Footnote F5

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.

Footnote F6

Date is N/A.

Footnote F7

On June 15, 2023, the Reporting Person was granted 14,400 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.

Footnote F8

Reflects the number of performance stock units ("PSUs") held by the Reporting Person after the forfeiture of unachieved PSUs.