NetScout insider plans 8,000-share stock sale

John Downing intends to sell up to 8,000 shares of NetScout Systems, Inc. common stock through Merrill Lynch on NASDAQ, with an indicated aggregate market value of $307,267.38 and an anticipated sale date of 08/11/2026.

Rhea-AI Filing Summary

John Downing intends to sell up to 8,000 shares of NetScout Systems, Inc. common stock through Merrill Lynch on NASDAQ, with an indicated aggregate market value of $307,267.38 and an anticipated sale date of 08/11/2026. The shares relate to earlier restricted stock unit (RSU) awards that vested in 2018 under an issuer equity compensation plan. The disclosure also lists a prior sale of 8,000 shares of NetScout common stock on 06/08/2026 for $322,334.41.

Key Figures

Planned shares to be sold: 8,000 shares Aggregate market value of planned sale: $307,267.38 Shares sold in past 3 months: 8,000 shares +4 more

7 metrics

Planned shares to be sold 8,000 shares Common stock sale indicated with anticipated date 08/11/2026

Aggregate market value of planned sale $307,267.38 Estimated value for 8,000 NetScout common shares

Shares sold in past 3 months 8,000 shares Common stock sold on 06/08/2026

Proceeds from prior sale $322,334.41 Total for 8,000 shares sold on 06/08/2026

RSU vesting 06/01/2018 1,998 shares Vesting of restricted stock unit award under equity plan

RSU vesting 08/01/2018 5,291 shares Vesting of restricted stock unit award under equity plan

RSU vesting 09/04/2018 711 shares Vesting of restricted stock unit award under equity plan

Key Terms

restricted stock unit award, equity compensation plan, aggregate market value

3 terms

restricted stock unit award financial

"Common Stock | 06/01/2018 | Vesting of restricted stock unit award"

A restricted stock unit award is a promise by a company to give an employee a specified number of company shares at a future date if certain conditions are met, such as staying with the company or hitting performance goals. For investors, these awards matter because they can increase the total number of shares outstanding when converted, diluting existing holders, and they align employees’ incentives with shareholders’ interests much like giving a rising bonus that becomes real only after conditions are satisfied.

equity compensation plan financial

"Granted as part of issuer equity compensation plan"

A plan by which a company gives employees, directors or contractors ownership or the right to buy ownership in the company through stock, options or similar awards — think of promising slices of the company pie as part of someone's pay. It matters to investors because these awards can change the number of shares outstanding, affect reported profits and influence management’s decisions; large or generous plans can dilute existing holders and alter incentives over time.

aggregate market value financial

"Common Stock | Merrill Lynch 225 Liberty Street Floor 37 New York NY 10281 | 8000 | 307267.38"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stock sale is disclosed for NetScout Systems (NTCT)?

The notice covers a potential sale of 8,000 shares of NetScout Systems common stock, with an indicated aggregate market value of $307,267.38 to be sold through Merrill Lynch on NASDAQ around 08/11/2026.

Who is the selling security holder in the NTCT Form 144 notice?

The selling security holder is John Downing, associated with an address in Westford, Massachusetts. The disclosure lists both a planned sale of 8,000 shares and a prior sale of 8,000 shares of NetScout common stock.

What prior NetScout (NTCT) stock sales are reported in this notice?

It reports that 8,000 shares of NetScout common stock were sold on 06/08/2026 for total proceeds of $322,334.41. This appears in the section describing securities sold during the past three months.

How were the NetScout (NTCT) shares originally acquired?

The shares relate to the vesting of restricted stock unit awards granted under a NetScout equity compensation plan, with vesting dates including 06/01/2018, 08/01/2018, and 09/04/2018 as part of issuer equity compensation.

Which broker and market are involved in the planned NTCT share sale?

The planned sale of 8,000 NetScout shares is to be executed through Merrill Lynch, located at 225 Liberty Street in New York, with trading indicated on the NASDAQ market.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/11/2026 - 04:07 PM Accepted by SEC EDGAR 08/11/2026 - 04:07 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001232878
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	NETSCOUT SYSTEMS INC
SEC File Number	000-26251
Address of Issuer	310 LITTLETON ROAD WESTFORD MASSACHUSETTS 01886
Phone	978-614-4000
Name of Person for Whose Account the Securities are To Be Sold	DOWNING JOHN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Merrill Lynch 225 Liberty Street Floor 37 New York NY 10281	8000	307267.38	72707312	08/11/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	06/01/2018	Vesting of restricted stock unit award	NETSCOUT SYSTEMS INC			1998	06/01/2018	Granted as part of issuer equity compensation plan
Common Stock	08/01/2018	Vesting of restricted stock unit award	NETSCOUT SYSTEMS INC			5291	08/01/2018	Granted as part of issuer equity compensation plan
Common Stock	09/04/2018	Vesting of restricted stock unit award	NETSCOUT SYSTEMS INC			711	09/04/2018	Granted as part of issuer equity compensation plan

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
John Downing 310 LITTLETON ROAD WESTFORD MA 01886	Common Stock	06/08/2026	8000	322334.41

144: Remarks and Signature

Remarks
Date of Notice	08/11/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/11/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	John Downing
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)