NETSCOUT officer proposes $255K share sale

The notice gives November 11, 2025 as the date of the Rule 10b5-1 plan adoption or instruction.

Available on EDGAR 11/10/2026 - 04:14 PM EST Accepted by SEC EDGAR 11/10/2026 - 04:14 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

NETSCOUT Systems Inc. officer John Downing reported a proposed sale of 8,000 common shares, with an approximate sale date of November 10, 2026 and an aggregate market value of $254,960.00. The notice lists 71,067,586 shares outstanding. It also records an 8,000-share sale on August 11, 2026, for gross proceeds of $307,267.38, and a November 11, 2025 date for the Rule 10b5-1 plan adoption or instruction.

Key Figures

Proposed sale: 8,000 shares Aggregate market value: $254,960.00 Shares outstanding: 71,067,586 shares +2 more

5 metrics

Proposed sale 8,000 shares Approximate sale date November 10, 2026

Aggregate market value $254,960.00 Proposed sale

Shares outstanding 71,067,586 shares Issuer share count shown in the securities information table

Past sale 8,000 shares Sale date August 11, 2026

Gross proceeds $307,267.38 Sale on August 11, 2026

Key Terms

Rule 10b5-1, restricted stock unit award, issuer equity compensation plan

3 terms

Rule 10b5-1 regulatory

"If Relying on Rule 10b5-1"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

restricted stock unit award financial

"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.

issuer equity compensation plan financial

"Granted as part of issuer equity compensation plan"

FAQ

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

How many NTCT shares did John Downing propose to sell?

John Downing reported a proposed sale of 8,000 common shares, with an approximate sale date of November 10, 2026 and an aggregate market value of $254,960.00. The notice gives November 11, 2025 as the date of the Rule 10b5-1 plan adoption or instruction.

How many NTCT shares did John Downing sell in August 2026?

The notice lists a sale of 8,000 common shares by John Downing on August 11, 2026, for gross proceeds of $307,267.38.

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

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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	254960.00	71067586	11/10/2026	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	11/13/2018	Vesting of restricted stock unit award	NETSCOUT SYSTEMS INC			3420	11/13/2018	Granted as part of issuer equity compensation plan
Common Stock	09/04/2018	Vesting of restricted stock unit award	NETSCOUT SYSTEMS INC			4580	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	08/11/2026	8000	307267.38

144: Remarks and Signature

Remarks
Date of Notice	11/10/2026
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)