# EDGAR Filing Document

**Accession Number:** 0001078075
**File Stem:** 0001078075-26-000012
**Filing Date:** 2026-2
**Character Count:** 191171
**Document Hash:** e2ef14a75b369b7749a4fa14deea1a8a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001078075-26-000012.hdr.sgml**: 20260205

**ACCESSION NUMBER**: 0001078075-26-000012

**CONFORMED SUBMISSION TYPE**: 10-Q

**PUBLIC DOCUMENT COUNT**: 91

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260205

**DATE AS OF CHANGE**: 20260205

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NETSCOUT SYSTEMS INC
- **CENTRAL INDEX KEY:** 0001078075
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 042837575
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 10-Q
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-26251
- **FILM NUMBER:** 26603166

**BUSINESS ADDRESS:**
- **STREET 1:** 310 LITTLETON ROAD
- **CITY:** WESTFORD
- **STATE:** MA
- **ZIP:** 01886
- **BUSINESS PHONE:** 978-614-4000

**MAIL ADDRESS:**
- **STREET 1:** 310 LITTLETON ROAD
- **CITY:** WESTFORD
- **STATE:** MA
- **ZIP:** 01886

?xml version='1.0' encoding='ASCII'? ntct-20251231

**Table of Contents**

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, DC 20549**

**FORM 10-Q** 

**(Mark One)**

☒ **QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**For the quarterly period ended December 31, 2025**

**OR**

---

| | |
|:---|:---|
| ☐ | **TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934** |
| | **For the transition period from <u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u> to <u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u>** |

---

**&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;** 

**Commission file number 000-26251** 

**NETSCOUT SYSTEMS, INC.** 

**(Exact Name of Registrant as Specified in Its Charter)**

---

| | |
|:---|:---|
| **Delaware** | **04-2837575** |
| **(State or Other Jurisdiction of<br>Incorporation or Organization)** | **(IRS Employer<br>Identification No.)** |

---

**310 Littleton Road, Westford, MA 01886** 

**(978) 614-4000** 

**Securities registered pursuant to Section 12(b) of the Act:**

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol(s)** | **Name of each exchange on which registered:** |
| Common Stock, $0.001 par value per share | NTCT | Nasdaq Global Select Market |

---

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.&nbsp;&nbsp;&nbsp;&nbsp;Yes ☒&nbsp;&nbsp;&nbsp;&nbsp;No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).&nbsp;&nbsp;&nbsp;&nbsp;Yes ☒&nbsp;&nbsp;&nbsp;&nbsp;No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Large accelerated filer ☒&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accelerated filer&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ☐&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Non-accelerated filer ☐&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Smaller reporting company&nbsp;&nbsp;&nbsp;&nbsp;☐

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Emerging growth company&nbsp;&nbsp;&nbsp;&nbsp;☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐&nbsp;&nbsp;&nbsp;&nbsp;No ☒

The number of shares outstanding of the registrant's common stock, par value $0.001 per share, as of January 26, 2026 was 72,220,350.

------

**Table of Contents**

**NETSCOUT SYSTEMS, INC.**

**FORM 10-Q**

**FOR THE QUARTER ENDED DECEMBER 31, 2025** 

**TABLE OF CONTENTS**

---

| | | |
|:---|:---|:---|
| **<u>CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS</u>** | **<u>CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS</u>** | <u>[1](#i322f43160e73476eafae39e451691ec7_10)</u> |
| **<u>[PART I: FINANCIAL INFORMATION](#i322f43160e73476eafae39e451691ec7_10)</u>** | **<u>[PART I: FINANCIAL INFORMATION](#i322f43160e73476eafae39e451691ec7_10)</u>** |  |
| ***Item 1.*** | ***<u>[Unaudited Financial Statements:](#i322f43160e73476eafae39e451691ec7_13)</u>*** |  |
|  | <u>[Consolidated Balance Sheets: At](#i322f43160e73476eafae39e451691ec7_16)December 31, 2025[and](#i322f43160e73476eafae39e451691ec7_16)March 31, 2025</u> | <u>[2](#i322f43160e73476eafae39e451691ec7_16)</u> |
|  | <u>[Consolidated Statements of Operations: For the three and](#i322f43160e73476eafae39e451691ec7_19)nine months ended December 31, 2025[and](#i322f43160e73476eafae39e451691ec7_19)2024</u> | <u>[3](#i322f43160e73476eafae39e451691ec7_19)</u> |
|  | <u>[Consolidated Statements of Comprehensive Income (Loss): For the three and](#i322f43160e73476eafae39e451691ec7_22)nine months ended December 31, 2025[and](#i322f43160e73476eafae39e451691ec7_22)2024</u> | <u>[4](#i322f43160e73476eafae39e451691ec7_22)</u> |
|  | <u>[Consolidated Statements of Stockholders' Equity: For the](#i322f43160e73476eafae39e451691ec7_28)three and nine months ended December 31, 2025[and](#i322f43160e73476eafae39e451691ec7_28)2024</u> | <u>[5](#i322f43160e73476eafae39e451691ec7_25)</u> |
|  | <u>[Consolidated Statements of Cash Flows: For the](#i322f43160e73476eafae39e451691ec7_28)nine months ended December 31, 2025[and](#i322f43160e73476eafae39e451691ec7_28)2024</u> | <u>[7](#i322f43160e73476eafae39e451691ec7_28)</u> |
|  | <u>[Notes to Consolidated Financial Statements](#i322f43160e73476eafae39e451691ec7_31)</u> | <u>[8](#i322f43160e73476eafae39e451691ec7_31)</u> |
| ***Item 2.*** | ***<u>[Management's Discussion and Analysis of Financial Condition and Results of Operations](#i322f43160e73476eafae39e451691ec7_97)</u>*** | <u>[25](#i322f43160e73476eafae39e451691ec7_97)</u> |
| ***Item 3.*** | ***<u>[Quantitative and Qualitative Disclosures About Market Risk](#i322f43160e73476eafae39e451691ec7_130)</u>*** | <u>[40](#i322f43160e73476eafae39e451691ec7_130)</u> |
| ***Item 4.*** | ***<u>[Controls and Procedures](#i322f43160e73476eafae39e451691ec7_133)</u>*** | <u>[40](#i322f43160e73476eafae39e451691ec7_133)</u> |
| **<u>[PART II: OTHER INFORMATION](#i322f43160e73476eafae39e451691ec7_136)</u>** | **<u>[PART II: OTHER INFORMATION](#i322f43160e73476eafae39e451691ec7_136)</u>** |  |
| ***Item 1.*** | ***<u>[Legal Proceedings](#i322f43160e73476eafae39e451691ec7_139)</u>*** | <u>[41](#i322f43160e73476eafae39e451691ec7_139)</u> |
| ***Item 1A.*** | ***<u>[Risk Factors](#i322f43160e73476eafae39e451691ec7_142)</u>*** | <u>[41](#i322f43160e73476eafae39e451691ec7_142)</u> |
| ***Item 2.*** | ***<u>[Unregistered Sales of Equity Securities and Use of Proceeds](#i322f43160e73476eafae39e451691ec7_145)</u>*** | <u>[41](#i322f43160e73476eafae39e451691ec7_145)</u> |
| ***Item 3.*** | ***<u>Defaults Upon Senior Securities</u>*** | <u>[41](#i322f43160e73476eafae39e451691ec7_148)</u> |
| ***Item 4.*** | ***<u>Mine Safety Disclosures</u>*** | <u>[41](#i322f43160e73476eafae39e451691ec7_151)</u> |
| ***Item 5.*** | ***<u>Other Information</u>*** | <u>[42](#i322f43160e73476eafae39e451691ec7_154)</u> |
| ***Item 6.*** | ***<u>[Exhibits](#i322f43160e73476eafae39e451691ec7_163)</u>*** | <u>[43](#i322f43160e73476eafae39e451691ec7_163)</u> |
| ***<u>[SIGNATURES](#i322f43160e73476eafae39e451691ec7_166)</u>*** |  | <u>[44](#i322f43160e73476eafae39e451691ec7_166)</u> |

---

Unless the context suggests otherwise, references in this Quarterly Report on Form 10-Q, or Quarterly Report, to "NetScout," the "Company," "we," "us," and "our" refer to NetScout Systems, Inc. and, where appropriate, our consolidated subsidiaries.

NetScout, the NetScout logo, Adaptive Service Intelligence and other trademarks or service marks of NetScout appearing in this Quarterly Report are the property of NetScout Systems, Inc. and/or its subsidiaries and/or affiliates in the United States and/or other countries. Any third-party trade names, trademarks and service marks appearing in this Quarterly Report are the property of their respective holders.

------

**Table of Contents**

**Cautionary Statement Concerning Forward-Looking Statements**

The following discussion and other parts of this Quarterly Report contain forward-looking statements under Section 21E of the Securities Exchange Act of 1934, as amended, and other federal securities laws. These forward-looking statements involve risks and uncertainties. Examples of forward-looking statements include statements that relate to future events or our future financial performance or liquidity, and other statements that are not historical fact. You can identify forward-looking statements by their use of forward-looking words such as "may," "will," "could," "should," "expects," "plans," "intends," "seeks," "anticipates," "believes," "estimates," "potential," or "continue," or the negative of such terms or other comparable terminology. These statements are only predictions. You should not place undue reliance on these forward-looking statements. The outcome of the events described in these forward-looking statements is subject to risks, uncertainties, and other factors, including those described in Part I, Item 1A. Risk Factors in our Annual Report on Form 10-K for our fiscal year ended March 31, 2025, filed with the Securities and Exchange Commission (SEC) on May 15, 2025, and Part II, Item 1A of our Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2025, filed with the SEC on November 6, 2025. These factors may cause our actual results to differ materially from any forward-looking statement. Moreover, we operate in a very competitive and rapidly changing environment. New risks and uncertainties emerge from time to time, and it is not possible for us to predict all risks and uncertainties that could have an impact on the forward-looking statements contained in this Quarterly Report on Form 10-Q. We cannot assure you that the results, events, and circumstances reflected in the forward-looking statements will be achieved or occur, and actual results, events, or circumstances could differ materially from those described in the forward-looking statements.

The forward-looking statements made in this Quarterly Report on Form 10-Q relate only to events as of the date on which the statements are made. We undertake no obligation to update any forward-looking statements made in this Quarterly Report on Form 10-Q to reflect events or circumstances after the date of this Quarterly Report on Form 10-Q or to reflect new information or the occurrence of unanticipated events, except as required by law. We may not actually achieve the plans, intentions, or expectations disclosed in our forward-looking statements and you should not place undue reliance on our forward-looking statements. Our forward-looking statements do not reflect the potential impact of any future acquisitions, mergers, dispositions, joint ventures, or investments we may make.

------

**Table of Contents**

**PART I: FINANCIAL INFORMATION**

***Item 1. Unaudited Financial Statements***

**NetScout Systems, Inc.**

**Consolidated Balance Sheets**

**(In thousands, except for per share data)**

---

| | | |
|:---|:---|:---|
| | **December 31,<br>2025**<br>**(Unaudited)** | **March 31,<br>2025** |
| **Assets** | | |
| Current assets: |  |  |
| Cash and cash equivalents | $540642 | $457415 |
| Marketable securities and investments | 32361 | 34058 |
| Accounts receivable and unbilled costs, net of allowance for credit losses of $129 and $214 at December 31, 2025 and March 31, 2025, respectively | 234554 | 163654 |
| Inventories and deferred costs | 12409 | 12891 |
| Prepaid income taxes | 7922 | 13380 |
| Prepaid expenses and other current assets | 28961 | 31786 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current assets | 856849 | 713184 |
| Fixed assets, net | 21922 | 21529 |
| Operating lease right-of-use assets | 37574 | 37717 |
| Goodwill | 1069028 | 1076383 |
| Intangible assets, net | 226787 | 258690 |
| Deferred income taxes | 85054 | 66294 |
| Long-term marketable securities | 13151 | 1004 |
| Other assets | 11232 | 11777 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total assets | $2321597 | $2186578 |
| **Liabilities and Stockholders' Equity** |  |  |
| Current liabilities: |  |  |
| Accounts payable | $17247 | $18208 |
| Accrued compensation | 74156 | 56696 |
| Accrued other | 18843 | 19397 |
| Income taxes payable | 982 | 883 |
| Deferred revenue and customer deposits | 321305 | 301753 |
| Current portion of operating lease liabilities | 10053 | 10995 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | 442586 | 407932 |
| Other long-term liabilities | 7771 | 8210 |
| Deferred tax liability | 2887 | 2643 |
| Accrued long-term retirement benefits | 29686 | 27379 |
| Long-term deferred revenue and customer deposits | 165694 | 147510 |
| Operating lease liabilities, net of current portion | 31751 | 32509 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 680375 | 626183 |
| Commitments and contingencies (Note 13) |  |  |
| Stockholders' equity: |  |  |
| Preferred stock, $0.001 par value, 5,000,000 authorized; none issued and outstanding |  |  |
| Common stock, $0.001 par value, 300,000,000 authorized; 136,376,483 and 134,038,262 issued and 72,219,830 and 72,060,237 outstanding | 136 | 134 |
| Additional paid-in capital | 3306213 | 3255333 |
| Accumulated other comprehensive income | 3979 | 4073 |
| Treasury stock, at cost, 64,156,653 and 61,978,025 shares | (1701954) | (1654702) |
| Retained earnings (Accumulated deficit) | 32848 | (44443) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total stockholders' equity | 1641222 | 1560395 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and stockholders' equity | $2321597 | $2186578 |

---

The accompanying notes are an integral part of these consolidated financial statements.

------

**Table of Contents**

**NetScout Systems, Inc.**

**Consolidated Statements of Operations**

**(In thousands, except for per share data)**

**(Unaudited)**

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| Revenue: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product | $121704 | $128175 | $289409 | $270377 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service | 128979 | 123844 | 367038 | 347315 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total revenue | 250683 | 252019 | 656447 | 617692 |
| Cost of revenue: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product | 14795 | 16362 | 38317 | 41806 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service | 31234 | 30250 | 94744 | 91232 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total cost of revenue | 46029 | 46612 | 133061 | 133038 |
| Gross profit | 204654 | 205407 | 523386 | 484654 |
| Operating expenses: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Research and development | 39635 | 37753 | 119693 | 116127 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sales and marketing | 65392 | 69933 | 200912 | 201489 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;General and administrative | 24131 | 23484 | 78249 | 72807 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amortization of acquired intangible assets | 11156 | 11601 | 33437 | 34857 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Restructuring charges | 25 | 923 | 858 | 19895 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Goodwill impairment |  |  |  | 426967 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | 140339 | 143694 | 433149 | 872142 |
| Income (loss) from operations | 64315 | 61713 | 90237 | (387488) |
| Interest and other income (expense), net: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest income | 3277 | 2533 | 10018 | 8177 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest expense | (456) | (2649) | (1292) | (6395) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other (expense) income, net | (528) | (4222) | (3801) | 1711 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total interest and other income (expense), net | 2293 | (4338) | 4925 | 3493 |
| Income (loss) before income tax expense | 66608 | 57375 | 95162 | (383995) |
| Income tax expense | 11466 | 8565 | 17871 | 1544 |
| Net income (loss) | $55142 | $48810 | $77291 | $(385539) |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic net income (loss) per share | $0.76 | $0.68 | $1.07 | $(5.39) |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted net income (loss) per share | $0.75 | $0.67 | $1.06 | $(5.39) |
| Weighted average common shares outstanding used in computing: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net income (loss) per share - basic | 72211 | 71737 | 72007 | 71551 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net income (loss) per share - diluted | 73820 | 72569 | 73195 | 71551 |

---

The accompanying notes are an integral part of these consolidated financial statements.

------

**Table of Contents**

**NetScout Systems, Inc.**

**Consolidated Statements of Comprehensive Income (Loss)**

**(In thousands)**

**(Unaudited)**

---

| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| Net income (loss) | $55142 | $48810 | $77291 | $(385539) |
| Other comprehensive income (loss): |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cumulative translation adjustments | (26) | (678) | (30) | (281) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes in market value of investments: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes in unrealized gains (losses), net of taxes of $1, ($1), $5 and $8 respectively | 2 | (2) | 15 | 26 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total net change in market value of investments | 2 | (2) | 15 | 26 |
| Changes in market value of derivatives: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes in market value of derivatives, net of taxes of $15, ($139), $50 and ($100), respectively | 51 | (437) | 164 | (318) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reclassification adjustment for net (losses) gains included in net income (loss), net of taxes (benefits) of $0, $28, ($76) and $38 respectively | (2) | 86 | (243) | 121 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total net change in market value of derivatives | 49 | (351) | (79) | (197) |
| Other comprehensive income (loss) | 25 | (1031) | (94) | (452) |
| Comprehensive income (loss) | $55167 | $47779 | $77197 | $(385991) |

---

The accompanying notes are an integral part of these consolidated financial statements.

------

**Table of Contents**

**NetScout Systems, Inc.**

**Consolidated Statements of Stockholders' Equity**

**(In thousands, except for per share data)**

**(Unaudited)**

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Three months ended December 31, 2025** | **Three months ended December 31, 2025** | **Three months ended December 31, 2025** | **Three months ended December 31, 2025** | **Three months ended December 31, 2025** | **Three months ended December 31, 2025** | **Three months ended December 31, 2025** | **Three months ended December 31, 2025** |
| | **Common Stock<br>Voting** | **Common Stock<br>Voting** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Treasury Stock** | **Treasury Stock** | **(Accumulated Deficit) Retained Earnings** | **Total<br>Stockholders'<br>Equity** |
| | **Common Stock<br>Voting** | **Common Stock<br>Voting** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Treasury Stock** | **Treasury Stock** | **(Accumulated Deficit) Retained Earnings** | **Total<br>Stockholders'<br>Equity** |
| | **Shares** | **Par<br>Value** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Shares** | **Stated<br>Value** | **(Accumulated Deficit) Retained Earnings** | **Total<br>Stockholders'<br>Equity** |
| Balance, September 30, 2025 | 136324349 | $136 | $3293220 | $3954 | 64138297 | $(1701464) | $(22294) | $1573552 |
| Net income |  |  |  |  |  |  | 55142 | 55142 |
| Unrealized net investment gains |  |  |  | 2 |  |  |  | 2 |
| Unrealized net gains on derivative financial instruments |  |  |  | 49 |  |  |  | 49 |
| Cumulative translation adjustments |  |  |  | (26) |  |  |  | (26) |
| Issuance of common stock pursuant to vesting of restricted stock units | 52134 |  |  |  |  |  |  |  |
| Stock-based compensation expense for restricted stock units granted to employees |  |  | 12993 |  |  |  |  | 12993 |
| Repurchase of treasury stock |  |  |  |  | 18356 | (490) |  | (490) |
| Balance, December 31, 2025 | 136376483 | $136 | $3306213 | $3979 | 64156653 | $(1701954) | $32848 | $1641222 |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended December 31, 2025** | **Nine Months Ended December 31, 2025** | **Nine Months Ended December 31, 2025** | **Nine Months Ended December 31, 2025** | **Nine Months Ended December 31, 2025** | **Nine Months Ended December 31, 2025** | **Nine Months Ended December 31, 2025** | **Nine Months Ended December 31, 2025** |
| | **Common Stock<br>Voting** | **Common Stock<br>Voting** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Treasury Stock** | **Treasury Stock** | **(Accumulated Deficit) Retained Earnings** | **Total<br>Stockholders'<br>Equity** |
| | **Common Stock<br>Voting** | **Common Stock<br>Voting** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Treasury Stock** | **Treasury Stock** | **(Accumulated Deficit) Retained Earnings** | **Total<br>Stockholders'<br>Equity** |
| | **Shares** | **Par<br>Value** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Shares** | **Stated<br>Value** | **(Accumulated Deficit) Retained Earnings** | **Total<br>Stockholders'<br>Equity** |
| Balance, March 31, 2025 | 134038262 | $134 | $3255333 | $4073 | 61978025 | $(1654702) | $(44443) | $1560395 |
| Net income |  |  |  |  |  |  | 77291 | 77291 |
| Unrealized net investment gains |  |  |  | 15 |  |  |  | 15 |
| Unrealized net losses on derivative financial instruments |  |  |  | (79) |  |  |  | (79) |
| Cumulative translation adjustments |  |  |  | (30) |  |  |  | (30) |
| Issuance of common stock pursuant to vesting of restricted stock units | 2121764 | 2 |  |  |  |  |  | 2 |
| Stock-based compensation expense for restricted stock units granted to employees |  |  | 45492 |  |  |  |  | 45492 |
| Issuance of common stock under employee stock purchase plan | 216457 |  | 5388 |  |  |  |  | 5388 |
| Repurchase of treasury stock |  |  |  |  | 2178628 | (47252) |  | (47252) |
| Balance, December 31, 2025 | 136376483 | $136 | $3306213 | $3979 | 64156653 | $(1701954) | $32848 | $1641222 |

---

The accompanying notes are an integral part of these consolidated financial statements.

**NetScout Systems, Inc.**

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**Table of Contents**

**Consolidated Statements of Stockholders' Equity**

**(In thousands, except for per share data)**

**(Unaudited)**

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Three months ended December 31, 2024** | **Three months ended December 31, 2024** | **Three months ended December 31, 2024** | **Three months ended December 31, 2024** | **Three months ended December 31, 2024** | **Three months ended December 31, 2024** | **Three months ended December 31, 2024** | **Three months ended December 31, 2024** |
| | **Common Stock<br>Voting** | **Common Stock<br>Voting** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Treasury Stock** | **Treasury Stock** | **Accumulated Deficit** | **Total<br>Stockholders'<br>Equity** |
| | **Common Stock<br>Voting** | **Common Stock<br>Voting** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Treasury Stock** | **Treasury Stock** | **Accumulated Deficit** | **Total<br>Stockholders'<br>Equity** |
| | **Shares** | **Par<br>Value** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Shares** | **Stated<br>Value** | **Accumulated Deficit** | **Total<br>Stockholders'<br>Equity** |
| Balance, September 30, 2024 | 133671490 | $133 | $3221213 | $4151 | 61956261 | $(1654239) | $(111870) | $1459388 |
| Net income |  |  |  |  |  |  | 48810 | 48810 |
| Unrealized net investment losses |  |  |  | (2) |  |  |  | (2) |
| Unrealized net losses on derivative financial instruments |  |  |  | (351) |  |  |  | (351) |
| Cumulative translation adjustments |  |  |  | (678) |  |  |  | (678) |
| Issuance of common stock pursuant to vesting of restricted stock units | 46652 |  |  |  |  |  |  |  |
| Stock-based compensation expense for restricted stock units granted to employees |  |  | 13746 |  |  |  |  | 13746 |
| Repurchase of treasury stock |  |  |  |  | 15936 | (330) |  | (330) |
| Balance, December 31, 2024 | 133718142 | $133 | $3234959 | $3120 | 61972197 | $(1654569) | $(63060) | $1520583 |

---

---

| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended December 31, 2024** | **Nine Months Ended December 31, 2024** | **Nine Months Ended December 31, 2024** | **Nine Months Ended December 31, 2024** | **Nine Months Ended December 31, 2024** | **Nine Months Ended December 31, 2024** | **Nine Months Ended December 31, 2024** | **Nine Months Ended December 31, 2024** |
| | **Common Stock<br>Voting** | **Common Stock<br>Voting** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Treasury Stock** | **Treasury Stock** | **Retained Earnings (Accumulated Deficit)** | **Total<br>Stockholders'<br>Equity** |
| | **Common Stock<br>Voting** | **Common Stock<br>Voting** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Treasury Stock** | **Treasury Stock** | **Retained Earnings (Accumulated Deficit)** | **Total<br>Stockholders'<br>Equity** |
| | **Shares** | **Par<br>Value** | **Additional<br>Paid In<br>Capital** | **Accumulated<br>Other<br>Comprehensive<br>Income** | **Shares** | **Stated<br>Value** | **Retained Earnings (Accumulated Deficit)** | **Total<br>Stockholders'<br>Equity** |
| Balance, March 31, 2024 | 131316309 | $131 | $3181366 | $3572 | 59912093 | (1615483) | $322479 | $1892065 |
| Net loss |  |  |  |  |  |  | (385539) | (385539) |
| Unrealized net investment gains |  |  |  | 26 |  |  |  | 26 |
| Unrealized net losses on derivative financial instruments |  |  |  | (197) |  |  |  | (197) |
| Cumulative translation adjustments |  |  |  | (281) |  |  |  | (281) |
| Issuance of common stock pursuant to vesting of restricted stock units | 2188735 | 2 |  |  |  |  |  | 2 |
| Stock-based compensation expense for restricted stock units granted to employees |  |  | 49016 |  |  |  |  | 49016 |
| Issuance of common stock under employee stock purchase plan | 213098 |  | 4577 |  |  |  |  | 4577 |
| Repurchase of treasury stock |  |  |  |  | 2060104 | (39086) |  | (39086) |
| Balance, December 31, 2024 | 133718142 | $133 | $3234959 | $3120 | 61972197 | $(1654569) | $(63060) | $1520583 |

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**Table of Contents**

 **NetScout Systems, Inc.**

**Consolidated Statements of Cash Flows**

**(In thousands)**

**(Unaudited)**

---

| | | |
|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** |
| | **2025** | **2024** |
| **Cash flows from operating activities:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net income (loss) | $77291 | $(385539) |
| Adjustments to reconcile net income (loss) to cash provided by operating activities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Depreciation and amortization | 42310 | 48190 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Loss on extinguishment of debt |  | 1134 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Operating lease right-of-use asset amortization | 7471 | 7852 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Loss on disposal of fixed assets | 22 | 15 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Share-based compensation expense | 47349 | 50586 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Goodwill impairment |  | 426967 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deferred income taxes | (18739) | (32248) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Loss (gain) in equity investment | 988 | (2948) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Other loss | 29 | 1 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Changes in assets and liabilities |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable and unbilled costs | (70561) | (22374) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Inventories and deferred costs | (727) | (1460) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Prepaid expenses and other assets | 9439 | 6688 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | (439) | (485) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Accrued compensation and other expenses | 18976 | 9158 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Operating lease liabilities | (9025) | (9274) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income taxes payable | 697 | (296) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Deferred revenue | 37198 | (19818) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by operating activities | 142279 | 76149 |
| **Cash flows from investing activities:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Purchase of marketable securities and investments | (69312) | (29348) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Proceeds from sales and maturity of marketable securities | 47102 | 36688 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Proceeds from sale of equity investment | 11772 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Purchase of fixed assets | (6926) | (4009) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Purchase of intangible assets |  | (1290) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash (used in) provided by investing activities | (17364) | 2041 |
| **Cash flows from financing activities:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Issuance of common stock under stock plans | 2 | 2 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Treasury stock repurchases | (31566) | (25257) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Tax withholdings on restricted stock units | (15686) | (13829) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payment of debt issuance costs |  | (2450) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Repayment of long-term debt |  | (100000) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Proceeds from issuance of long-term debt |  | 75000 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash used in financing activities | (47250) | (66534) |
| Effect of exchange rate changes on cash and cash equivalents | 5562 | (2969) |
| Net increase in cash and cash equivalents | 83227 | 8687 |
| Cash and cash equivalents, beginning of period | 457415 | 389674 |
| Cash and cash equivalents, end of period | $540642 | $398361 |
| **Supplemental disclosures:** |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash paid for interest | $— | $3793 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash paid for income taxes | $30989 | $32197 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;*Non-cash transactions:* |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Transfers of inventory to fixed assets | $1353 | $1020 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Additions to property, plant and equipment included in accounts payable | $254 | $318 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Issuance of common stock under employee stock plans | $5388 | $4577 |

---

The accompanying notes are an integral part of these consolidated financial statements.

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**Table of Contents**

**NetScout Systems, Inc.**

**Notes to Consolidated Financial Statements**

**(Unaudited)**

**NOTE 1 – BASIS OF PRESENTATION**

The accompanying unaudited interim consolidated financial statements have been prepared by NetScout Systems, Inc. (NetScout or the Company). Certain information and footnote disclosures normally included in financial statements prepared under United States generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). In the opinion of management, the unaudited interim consolidated financial statements include all adjustments, consisting of normal recurring adjustments, necessary for a fair statement of the Company's financial position and stockholders' equity, results of operations and cash flows. The year-end consolidated balance sheet data and statement of stockholders' equity were derived from the Company's audited financial statements, but do not include all disclosures required by GAAP. The results reported in these unaudited interim consolidated financial statements are not necessarily indicative of results that may be expected for the entire year. All significant intercompany accounts and transactions are eliminated in consolidation.

These unaudited interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements, including the notes thereto, included in the Company's Annual Report on Form 10-K for the fiscal year ended March 31, 2025 filed with the SEC on May 15, 2025.

**Global and Macroeconomic Conditions**

The Company continues to closely monitor the current global and macroeconomic conditions, including the impacts of the ongoing war in Ukraine and hostilities in the Middle East, global geopolitical tension, stock market volatility, industry-specific capital spending trends, exchange rate fluctuations, inflation, interest rates, international trade relations (including trade protection measures, such as tariffs and other trade barriers), and the risk of a recession, including the manner and extent to which they have impacted and could continue to impact its business, customers, employees, supply chain, and distribution network. In addition, our industry is experiencing AI-related supply-chain dynamics which could influence the timing and size of certain customer orders. The full extent of the impacts of these global and macroeconomic trends remain dynamic. It is possible that the measures taken by the governments of countries affected and the resulting economic impacts may materially and adversely affect the Company's future results of operations, cash flows and financial position, as well as its customers.

The Company has the responsibility to evaluate whether conditions and/or events raise substantial doubt about its ability to meet its future financial obligations as they become due within one year after the date that the financial statements are issued. The Company remains optimistic but cognizant of ongoing macroeconomic dynamics and constrained customer spending in the service provider market and remains firmly focused on driving product innovation, returning to annual revenue growth, and enhancing margins through continued disciplined cost management as it navigates the current macroeconomic landscape that may persist through fiscal year 2026. In addition to its cash, cash equivalents, marketable securities, and investments, based on covenant levels, as of December 31, 2025, the Company had $600 million available under a revolving credit facility.

The Company expects net cash provided by operations combined with cash, cash equivalents, marketable securities and investments and borrowing availability under the revolving credit facility to provide sufficient liquidity to fund current obligations, capital spending, debt service requirements and working capital requirements over at least the next twelve months.

**Recent Accounting Pronouncements**

In November 2024, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (ASU 2024-03). Additionally, in January 2025, the FASB issued ASU 2025-01 to clarify the effective date of ASU 2024-03. ASU 2024-03 provides guidance to expand disclosures related to the disaggregation of income statement expenses. The standard requires, in the notes to the financial statements, disclosure of specified information about certain costs and expenses which includes purchases of inventory, employee compensation, depreciation, and intangible asset amortization that are included on the face of the statements of income. ASU 2024-03 is effective for fiscal years beginning after December 15, 2026, and for interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. ASU 2024-03 is effective for the Company beginning with its fiscal year ending March 31, 2028. The Company is in the process of evaluating the impact that the adoption of ASU 2024-03 will have on its disclosures.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. ASU 2023-09 is intended to enhance the transparency and usefulness of income tax disclosures for decision-making. The amendments address investor requests for enhanced income tax information primarily through changes to the rate reconciliation and income taxes paid information. The amendments are effective for annual periods beginning after December

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**Table of Contents**

15, 2024. The amendments should be applied prospectively; however, retrospective application is also permitted. ASU 2023-09 is effective for the Company beginning with its fiscal year ending March 31, 2026. The Company does not expect the adoption of ASU 2023-09 to have a material impact on its consolidated financial statements and disclosures.

In July 2025, the FASB issued ASU 2025-05, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets. ASU 2025-05 provides a practical expedient and an accounting policy election related to the estimation of expected credit losses for current accounts receivable and current contract assets that arise from transactions accounted for under ASC 606, "Revenue from Contracts with Customers." The practical expedient allows entities to assume that current conditions as of the balance sheet date do not change for the remaining life of the asset. ASU 2025-05 is effective for the annual periods beginning after December 15, 2025, and interim reporting periods within those annual reporting periods. ASU 2025-05 should be applied on a prospective basis with early adoption permitted. ASU 2025-05 is effective for the Company beginning with its fiscal year ending March 31, 2027. The Company is currently evaluating the impact of this standard and does not expect the adoption of 2025-05 to have a material impact on its consolidated financial statements and disclosures.

In September 2025, the FASB issued ASU 2025-06, Intangibles (Subtopic 350-40): Update to modernize the accounting for internal-use software costs. ASU 2025-06 removes all references to software project development stages and clarifies the recognition threshold, entities must meet to begin capitalizing costs. ASU 2025-06 is effective for the Company beginning with its fiscal year ending March 31, 2029. The Company is currently evaluating the impact of this standard and does not expect the adoption of ASU 2025-06 to have a material impact on its consolidated financial statements and disclosures.

**NOTE 2 – REVENUE**

**Revenue Recognition Policy**

The Company exercises judgment and uses estimates in connection with determining the amounts of product and service revenues to be recognized in each accounting period.

The Company derives revenues primarily from the sale of network management tools and cybersecurity solutions for service provider and enterprise customers, which include hardware, software, and service offerings. The Company's product sales consist primarily of software-only offerings and offerings that include hardware appliances with embedded software each of which are essential to providing customers the intended functionality of the solutions.

The Company accounts for revenue once a legally enforceable contract with a customer has been approved by the parties and the related promises to transfer products or services have been identified. A contract is defined by the Company as an arrangement with commercial substance identifying payment terms, each party's rights and obligations regarding the products or services to be transferred and the amount the Company deems probable of collection. Customer contracts may include promises to transfer multiple products and services to a customer. Determining whether the products and services are considered distinct performance obligations that should be accounted for separately or as one combined performance obligation may require significant judgment. Revenue is recognized when control of the products or services are transferred to the Company's customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for products and services.

Product revenue is typically recognized upon fulfillment, provided a legally enforceable contract exists, control has passed to the customer, and in the case of software products, when the customer has the rights and ability to access the software, and collection of the related receivable is probable. If any significant obligations to the customer remain post-delivery, typically involving obligations relating to installation and acceptance by the customer, revenue recognition is deferred until such obligations have been fulfilled. The Company's service offerings include installation, integration, extended warranty and maintenance services, post-contract customer support, subscription-based services, stand-ready software-as-a-service (SAAS) and other professional services including consulting and training. The Company generally provides software and/or hardware support as part of product sales. Revenue related to the initial bundled software and hardware support is recognized ratably over the support period. In addition, customers can elect to purchase extended support agreements for periods after the initial software/hardware warranty expiration. Support services generally include rights to unspecified upgrades (when and if available), telephone and internet-based support, updates, bug fixes and hardware repair and replacement. Consulting services are recognized upon delivery or completion of performance depending on the terms of the underlying contract. Reimbursements of out-of-pocket expenditures incurred in connection with providing consulting services are included in services revenue, with the offsetting expense recorded in cost of service revenue. Training services include on-site and classroom training. Training revenues are recognized upon delivery of the training.

Generally, the Company's contracts are accounted for individually. However, when contracts are closely interrelated and dependent on each other, it may be necessary to account for two or more contracts as one to reflect the substance of the group of contracts.

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**Table of Contents**

Bundled arrangements are concurrent customer purchases of a combination of the Company's product and service offerings that may be delivered at various points in time. The Company allocates the transaction price among the performance obligations in an amount that depicts the relative standalone selling prices (SSP) of each obligation. Judgment is required to determine the SSP for each distinct performance obligation. The Company uses a range of amounts to estimate SSP for each of the products and services sold, based primarily on the performance obligation's historical pricing. The Company also considers its overall pricing objectives and practices across different sales channels and geographies, and market conditions. Generally, the Company has established SSP for a majority of its service performance obligations based on historical standalone sales. In certain instances, the Company has established SSP for services based upon an estimate of profitability and the underlying cost to fulfill those services. SSP has primarily been established for product performance obligations as the average or median selling price for which the performance obligation was recently sold, whether sold alone or sold as part of a bundle transaction. The Company reviews sales of the product performance obligations on a quarterly basis and updates, when appropriate, its SSP for such performance obligations to ensure that it reflects recent pricing experience.

The Company's products are distributed through its direct sales force and indirect distribution channels through alliances with resellers and distributors. Revenue arrangements with resellers and distributors are recognized on a sell-in basis; that is, when control of the product transfers to the reseller or distributor. The Company records consideration given to a customer as a reduction of revenue to the extent they have recorded revenue from the customer. With limited exceptions, the Company's return policy does not allow product returns for a refund. Returns have been insignificant to date. In addition, the Company has a history of successfully collecting receivables from its resellers and distributors.

During the nine months ended December 31, 2025, the Company recognized revenue of $253.1 million related to the Company's deferred revenue balance reported at March 31, 2025.

**Performance Obligations**

Customer contracts may include promises to transfer multiple products and services to a customer. Determining whether the products and services are considered distinct performance obligations that should be accounted for separately or as one combined performance obligation may require significant judgment. The transaction price is allocated among performance obligations in bundled contracts in an amount that depicts the relative standalone selling prices of each obligation.

For contracts involving distinct hardware and software licenses, the performance obligations are satisfied at a point in time when control is transferred to the customer. For standalone maintenance and post-contract support (PCS), the performance obligation is satisfied ratably over the contract term as a stand-ready obligation. For consulting and training services, the performance obligation may be satisfied over the contract term as a stand-ready obligation, satisfied over a period of time as those services are delivered, satisfied at the completion of the service when control has transferred, or the services have expired unused.

Payments for hardware, software licenses, one-year maintenance, PCS and consulting services, are typically due up front with payment terms of 30 to 90 days. However, the Company does have contracts pursuant to which billings occur ratably over a period of years following the transfer of control for the contracted performance obligations. Payments on multi-year maintenance, PCS and consulting services are typically due in annual installments over the contract term. The Company did not have any material variable consideration such as obligations for returns, refunds or warranties at December 31, 2025.

At December 31, 2025, the Company had total deferred revenue and customer deposits of $487.0 million, which represents the aggregate total contract price allocated to undelivered performance obligations. The Company expects to recognize $321.3 million, or 66%, of this revenue during the next 12 months and expects to recognize the remaining $165.7 million, or 34%, of this revenue thereafter.

In accordance with our revenue recognition policies, there are circumstances for which the Company does not recognize revenue relating to sales transactions that have been billed and the related invoiced amount has not been collected. While the invoiced amount represents an enforceable obligation, the Company does not believe its right to payment is unconditional. Therefore, for balance sheet presentation purposes, the Company has not recognized the deferred revenue or the related account receivable, and no amounts appear in the consolidated balance sheets for such transactions because control of the underlying deliverable has not transferred. The aggregate amount of unrecognized accounts receivable and deferred revenue was $3.8 million and $5.5 million at December 31, 2025 and March 31, 2025, respectively.

The Company expects that the amount of billed and unbilled deferred revenue will change from quarter to quarter for several reasons, including the specific timing, duration and size of large customer support and service agreements, varying billing cycles of such agreements, the specific timing of customer renewals, and foreign currency fluctuations. The Company did not have material significant financing components, or variable consideration or performance obligations satisfied in a prior period recognized during the nine months ended December 31, 2025.

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**Table of Contents**

**Contract Balances**

The Company may receive payments from customers based on billing schedules as established by the Company's contracts. Contract assets relate to performance obligations where control has transferred to the customer in advance of scheduled billings. The Company records unbilled accounts receivable representing the right to consideration in exchange for goods or services that have been transferred to a customer conditional on the passage of time. Deferred revenue relates to scenarios where billings with an unconditional right to payment occur before all performance obligations are delivered or payments are received in advance of performance under the contract.

**Costs to Obtain Contracts**

The Company has determined that the only significant incremental costs incurred to obtain contracts with customers within the scope of ASC Topic 606, Revenue from contracts with customers, are sales commissions paid to its employees. Sales commissions are recorded as an asset and amortized to expense ratably over the remaining performance periods of the related contracts with remaining performance obligations. The Company expenses costs as incurred for sales commissions when the amortization period would have been one year or less.

At December 31, 2025, the consolidated balance sheet included $10.5 million in assets related to sales commissions to be expensed in future periods. A balance of $5.8 million was included in prepaid expenses and other current assets, and a balance of $4.7 million was included in other assets in the Company's consolidated balance sheet at December 31, 2025. At March 31, 2025, the consolidated balance sheet included $9.9 million in assets related to sales commissions to be expensed in future periods. A balance of $5.4 million was included in prepaid expenses and other current assets, and a balance of $4.5 million was included in other assets in the Company's consolidated balance sheet at March 31, 2025.

During each of the three and nine months ended December 31, 2025 and 2024, the Company recognized $2.0 million, $1.8 million, $5.7 million and $5.2 million of amortization related to this sales commission asset, respectively, which is included in the sales and marketing expense line in the Company's consolidated statements of operations.

**Allowance for Credit Losses**

The Company continually monitors collections from its customers. The Company evaluates the collectability of its accounts receivable and determines the appropriate allowance for credit losses based on a combination of factors, including but not limited to, analysis of the aging schedules, past due balances, historical collection experience and prevailing economic conditions.

The following table summarizes the activity in the allowance for credit losses (in thousands):

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| | |
|:---|:---|
| Balance at March 31, 2025 | $214 |
| &nbsp;&nbsp;&nbsp;&nbsp;Additions resulting in charges to operations | 135 |
| &nbsp;&nbsp;&nbsp;&nbsp;Recoveries of previously reserved balances | (40) |
| &nbsp;&nbsp;&nbsp;&nbsp;Deductions due to write-offs | (180) |
| Balance at December 31, 2025 | $129 |

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**NOTE 3 – CONCENTRATION OF CREDIT RISK AND SIGNIFICANT CUSTOMERS**

Financial instruments that potentially subject the Company to concentration of credit risk consist primarily of investments, trade accounts receivable and accounts payable. The Company's cash, cash equivalents, and marketable securities are placed with financial institutions with high credit standings.

At December 31, 2025, one direct customer and three channel partners each accounted for approximately 10% of the accounts receivable balance. At March 31, 2025, no direct customers or channel partners accounted for more than 10% of the accounts receivable balance.

During the three months ended December 31, 2025, one direct customer and one channel partner each accounted for approximately 10% of the Company's total revenue. During the nine months ended December 31, 2025, no direct customers or channel partners accounted for more than 10% of the Company's total revenue. During the three and nine months ended December 31, 2024, one direct customer and no channel partners accounted for more than 10% of total revenue.

Historically, the Company has not experienced any significant failure of its customers' ability to meet their payment obligations, nor does the Company anticipate material non-performance by its customers in the future; accordingly, the Company does not require collateral from its customers. However, if the Company's assumptions are incorrect, there could be an adverse impact on its allowance for credit losses.

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**Table of Contents**

**NOTE 4 – SHARE-BASED COMPENSATION**

*Equity Incentive Plan* – On September 12, 2019, the Company's stockholders approved the Company's 2019 Equity Incentive Plan (2019 Plan), which replaced the Company's 2007 Equity Incentive Plan, as amended. The 2019 Plan permits the granting of incentive and non-statutory stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, and other stock awards, collectively referred to as "share-based awards". The 2019 Plan has been amended from time to time to increase the number of shares reserved for issuance and to modify certain other terms.

On September 10, 2025, the Company's stockholders approved an amendment and restatement of the 2019 Plan (Amended 2019 Plan) to further increase the number of shares reserved for issuance by 3,500,000 from 27,794,651 shares to 31,294,651 shares. As of December 31, 2025, an aggregate of 8,479,872 shares remained available for grant under the Amended 2019 Plan.

Periodically, the Company grants share-based awards to employees, executive officers, and directors of the Company and its subsidiaries. Additionally, the Company periodically grants performance-based restricted stock units to certain executive officers that cliff vest up to 100% of shares granted at target based upon achievement of the Company's established metrics pertaining to total shareholder return as compared to the Russell 2000 Index over a three-year period. The performance-based restricted stock units are valued at the time of grant using the Monte Carlo Simulation model. The measurement and recognition of stock compensation expense is based on estimated fair values for all share-based awards made to its employees, executive officers, and directors. Share-based awards are generally measured at fair value on the date of grant based on the number of shares granted and the quoted closing price of the Company's common stock. Such value is recognized on a straight-line basis as a cost of revenue or an operating expense over the corresponding vesting period.

*Employee Stock Purchase Plan* – The Company maintains the 2011 Amended and Restated Employee Stock Purchase Plan (ESPP) for all eligible employees as described in the Company's Annual Report on Form 10-K for the fiscal year ended March 31, 2025. Under the ESPP, shares of the Company's common stock may be purchased on the last trading day of each bi-annual offering period at 85% of the fair market value on the last day of such offering period. The offering periods run from March 1st through August 31st and from September 1st through the last day of February each year. During the nine months ended December 31, 2025, employees purchased 216,457 shares under the ESPP and the fair market value per share was $24.89.

The following is a summary of share-based compensation expense including restricted stock units and performance-based restricted stock units granted pursuant to the Company's Amended 2019 Plan, and employee stock purchases made under the ESPP, based on estimated fair values within the applicable cost and expense lines identified below (in thousands):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| Cost of product revenue | $298 | $287 | $1008 | $1013 |
| Cost of service revenue | 1969 | 1909 | 6646 | 6703 |
| Research and development | 4114 | 4074 | 13636 | 13894 |
| Sales and marketing | 4749 | 5071 | 16311 | 17850 |
| General and administrative | 2702 | 3161 | 9748 | 11126 |
|  | $13832 | $14502 | $47349 | $50586 |

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**NOTE 5 – CASH, CASH EQUIVALENTS, MARKETABLE SECURITIES AND INVESTMENTS**

The Company considers all highly liquid investments purchased with an original maturity of three months or less to be cash equivalents and those investments with original maturities greater than three months to be marketable securities. Cash and cash equivalents mainly consisted of U.S. government and municipal obligations, commercial paper, agency bonds, money market instruments and cash maintained with various financial institutions at December 31, 2025 and March 31, 2025.

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**Table of Contents**

**Marketable Securities**

The following is a summary of marketable securities held by the Company at December 31, 2025, classified as short-term and long-term (in thousands):

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| | | | |
|:---|:---|:---|:---|
| | **Amortized<br>Cost** | **Unrealized Gains** | **Fair<br>Value** |
| Type of security: |  |  |  |
| U.S. government and municipal obligations | $7036 | $8 | $7044 |
| Commercial paper | 18786 |  | 18786 |
| Corporate bonds | 1005 | 1 | 1006 |
| Certificates of deposit | 3538 |  | 3538 |
| Agency bonds | 1985 | 2 | 1987 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total short-term marketable securities | 32350 | 11 | 32361 |
| Agency bonds | 13143 | 8 | 13151 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total long-term marketable securities | 13143 | 8 | 13151 |
| Total marketable securities | $45493 | $19 | $45512 |

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The following is a summary of marketable securities held by the Company at March 31, 2025, classified as short-term and long-term (in thousands):

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| | | | |
|:---|:---|:---|:---|
| | **Amortized<br>Cost** | **Unrealized Gains (Losses)** | **Fair<br>Value** |
| Type of security: |  |  |  |
| U.S. government and municipal obligations | $4413 | $1 | $4414 |
| Commercial paper | 17358 |  | 17358 |
| Certificates of deposit | 505 |  | 505 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total short-term marketable securities | 22276 | 1 | 22277 |
| U.S. government and municipal obligations | 1005 | (1) | 1004 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total long-term marketable securities | 1005 | (1) | 1004 |
| Total marketable securities | $23281 | $— | $23281 |

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Contractual maturities of the Company's marketable securities held at December 31, 2025 and March 31, 2025 were as follows (in thousands):

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| | | |
|:---|:---|:---|
| | **December 31,<br>2025** | **March 31,<br>2025** |
| Available-for-sale securities: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Due in 1 year or less | $32361 | $22277 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Due after 1 year through 5 years | 13151 | 1004 |
|  | $45512 | $23281 |

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**Investments**

In February 2023, the Company entered into a forward share purchase agreement with Napatech A/S (Napatech), a publicly traded Danish company registered on the Oslo stock exchange, to purchase approximately 6.2 million shares of Napatech's common stock for $7.5 million. In April 2023, the Company settled the forward share purchase contract with Napatech in exchange for approximately 6.2 million shares of Napatech's common stock. The Company accounted for the investment under the equity method and elected to apply the fair value option to the investment. The Company recorded the investment at fair value at the end of each period based on the closing price of Napatech's stock and any change in fair value during the period is recorded in other (expense) income, net within the Company's consolidated statement of operations. On August 4, 2025, the Company sold its entire equity investment in Napatech, receiving cash proceeds of $11.8 million. During the nine months ended December 31, 2025 and 2024, the Company recognized a $1.0 million loss and a $2.9 million gain, respectively, on the Napatech equity investment, in other (expense) income, net. For the nine months ended December 31, 2024, the unrealized loss related to foreign currency translation on the equity investment in Napatech was $0.5 million.

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**NOTE 6 – FAIR VALUE MEASUREMENTS**

The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs, and Level 3 includes fair values estimated using significant non-observable inputs. The following tables present the Company's financial assets and liabilities measured on a recurring basis using the fair value hierarchy at December 31, 2025 and March 31, 2025 (in thousands):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Fair Value Measurements at** | **Fair Value Measurements at** | **Fair Value Measurements at** | **Fair Value Measurements at** |
| | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** |
| | **Level 1** | **Level 2** | **Level 3** | **Total** |
| **ASSETS:** | | | | |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash and cash equivalents | $500574 | $40068 | $— | $540642 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;U.S. government and municipal obligations | 7044 |  |  | 7044 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Commercial paper |  | 18786 |  | 18786 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Corporate bonds |  | 1006 |  | 1006 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Certificate of deposits |  | 3538 |  | 3538 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Derivative financial instruments |  | 95 |  | 95 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Agency bonds |  | 15138 |  | 15138 |
|  | $507618 | $78631 | $— | $586249 |
| **LIABILITIES:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Derivative financial instruments | $— | $(88) | $— | $(88) |
|  | $— | $(88) | $— | $(88) |

---

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Fair Value Measurements at** | **Fair Value Measurements at** | **Fair Value Measurements at** | **Fair Value Measurements at** |
| | **March 31, 2025** | **March 31, 2025** | **March 31, 2025** | **March 31, 2025** |
| | **Level 1** | **Level 2** | **Level 3** | **Total** |
| **ASSETS:** | | | | |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash and cash equivalents | $434121 | $23294 | $— | $457415 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;U.S. government and municipal obligations | 3008 | 2410 |  | 5418 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Commercial paper |  | 17358 |  | 17358 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Certificate of deposits |  | 505 |  | 505 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Equity investment in Napatech | 11781 |  |  | 11781 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Derivative financial instruments |  | 197 |  | 197 |
|  | $448910 | $43764 | $— | $492674 |
| **LIABILITIES:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Derivative financial instruments | $— | $(55) | $— | $(55) |
|  | $— | $(55) | $— | $(55) |

---

This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value. On a recurring basis, the Company measures certain financial assets and liabilities at fair value, including marketable securities and derivative financial instruments.

The Company's Level 1 investments are classified as such because they are valued using quoted market prices or alternative pricing sources with reasonable levels of price transparency.

The Company's Level 2 investments are classified as such because they are valued using observable inputs other than Level 1 quoted prices that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets in markets that are not active.

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**NOTE 7 – INVENTORIES AND DEFERRED COSTS**

Inventories are stated at the lower of actual cost or net realizable value. Cost is determined by using the first in, first out (FIFO) method. Inventories consist of the following (in thousands):

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| | | |
|:---|:---|:---|
| | **December 31,<br>2025** | **March 31,<br>2025** |
| Raw materials | $6352 | $7172 |
| Work in process | 5 | 47 |
| Finished goods | 4218 | 3890 |
| Deferred costs | 1834 | 1782 |
|  | $12409 | $12891 |

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**NOTE 8 – GOODWILL AND INTANGIBLE ASSETS**

**Goodwill**

During the first quarter of fiscal year 2025, due to a decrease in the Company's stock price and overall market capitalization, along with other qualitative considerations including the continued impact from the conditions in the macroeconomic environment, it was determined a Triggering Event occurred, indicating goodwill may be impaired. Accordingly, the Company conducted an interim quantitative impairment test of its goodwill at June 30, 2024 using the market approach to estimate the fair value of its reporting unit. As a result of that interim impairment test, the Company recorded a $427.0 million goodwill impairment charge during the three months ended June 30, 2024. At September 30, 2024, December 31, 2024, and March 31, 2025 the Company performed a Triggering Event assessment and concluded no event or circumstances occurred that indicated goodwill was further impaired.

During fiscal year 2025, the Company completed its annual goodwill impairment test at January 31, 2025, using the qualitative assessment, and the Company concluded that it was more likely than not that the fair value of the reporting unit exceeded its carrying value.

The Company may be required to record additional goodwill impairment charges. While management cannot predict if or when additional goodwill impairments may occur, future goodwill impairments could have material adverse effects on the Company's results of operations and financial condition.

At December 31, 2025 and March 31, 2025, the carrying amounts of goodwill were approximately $1.1 billion, respectively.

The following table summarizes the changes in the carrying amount of goodwill for the nine months ended December 31, 2025 as follows (in thousands):

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| | |
|:---|:---|
| Balance at March 31, 2025 | $1076383 |
| &nbsp;&nbsp;&nbsp;&nbsp; Foreign currency translation impact | (7355) |
| Balance at December 31, 2025 | $1069028 |

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**Intangible Assets**

The net carrying amounts of intangible assets were $226.8 million and $258.7 million at December 31, 2025 and March 31, 2025, respectively. Intangible assets acquired in a business combination are recorded under the acquisition method of accounting at their estimated fair values at the date of acquisition. The Company amortizes acquired intangible assets over their estimated useful lives.

The Company reviews definite-lived intangible assets for impairment when an event occurs that may indicate potential impairment. In connection with the interim goodwill impairment analysis performed during fiscal year 2025, the Company conducted an impairment test of its definite-lived intangible assets. Based on that assessment, the Company concluded that the carrying values of the Company's definite-lived intangible assets were recoverable. At March 31, 2025, the Company performed a Triggering Event assessment and concluded no events or circumstances occurred that indicated intangible assets may be impaired. However, if future events occur or if business conditions deteriorate, the Company may be required to record an impairment loss, and or accelerate the amortization of definite-live intangible assets in the future, which could be material to its results of operations and financial condition.

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Intangible assets include the following amortizable intangible assets at December 31, 2025 (in thousands):

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| | | | |
|:---|:---|:---|:---|
| | **Cost** | **Accumulated<br>Amortization** | **Net** |
| Developed technology | $250602 | $(246314) | $4288 |
| Customer relationships | 771835 | (555552) | 216283 |
| Distributor relationships and technology licenses | 5242 | (4409) | 833 |
| Definite-lived trademark and trade name | 58045 | (52813) | 5232 |
| Core technology | 7192 | (7192) |  |
| Capitalized software | 3317 | (3317) |  |
| Other | 1208 | (1057) | 151 |
|  | $1097441 | $(870654) | $226787 |

---

Intangible assets include the following amortizable intangible assets at March 31, 2025 (in thousands):

---

| | | | |
|:---|:---|:---|:---|
| | **Cost** | **Accumulated<br>Amortization** | **Net** |
| Developed technology | $248232 | $(242298) | $5934 |
| Customer relationships | 763397 | (518995) | 244402 |
| Distributor relationships and technology licenses | 5097 | (4022) | 1075 |
| Definite-lived trademark and trade name | 57675 | (50562) | 7113 |
| Core technology | 7192 | (7192) |  |
| Capitalized software | 3317 | (3317) |  |
| Other | 1208 | (1042) | 166 |
|  | $1086118 | $(827428) | $258690 |

---

Amortization included as cost of product revenue consists of amortization of developed technology, distributor relationships and technology licenses. Amortization included as operating expense consists of all other intangible assets. The following table provides a summary of amortization expense for the three and nine months ended December 31, 2025 and 2024 (in thousands):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| Amortization of intangible assets included as: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Cost of product revenue | $632 | $1098 | $1894 | $3437 |
| &nbsp;&nbsp;&nbsp;&nbsp;Operating expense | 11162 | 11606 | 33451 | 34872 |
|  | $11794 | $12704 | $35345 | $38309 |

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The following is the expected future amortization expense at December 31, 2025 for the fiscal years ending March 31 (in thousands):

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| | |
|:---|:---|
| 2026 (remaining three months) | $11808 |
| 2027 | 44334 |
| 2028 | 41364 |
| 2029 | 31933 |
| 2030 | 29031 |
| Thereafter | 68317 |
|  | $226787 |

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**NOTE 9 – DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES**

NetScout operates internationally and, in the normal course of business, is exposed to fluctuations in foreign currency exchange rates. The exposures result from costs that are denominated in currencies other than the U.S. Dollar, primarily the Euro, British Pound, Canadian Dollar, and Indian Rupee. The Company manages its foreign cash flow risk by hedging forecasted cash flows for operating expenses denominated in foreign currencies for up to twelve months, within specified guidelines through the use of forward contracts. The Company enters into foreign currency exchange contracts to hedge cash flow exposures from costs that are denominated in currencies other than the U.S. Dollar. These hedges are designated as cash flow hedges at inception.

NetScout also periodically enters into forward contracts to manage exchange rate risks associated with certain third-party transactions and for which the Company does not elect hedge accounting treatment as there is no difference in the timing of gain or loss recognition on the hedging instrument and the hedged item.

All of the Company's derivative instruments are utilized for risk management purposes, and the Company does not use derivatives for speculative trading purposes. These contracts will mature over the next twelve months and are expected to impact earnings on or before maturity.

The notional amounts and fair values of derivative instruments in the consolidated balance sheets at December 31, 2025 and March 31, 2025 were as follows (in thousands):

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Notional Amounts (a)** | **Notional Amounts (a)** | **Prepaid Expenses and Other Current Assets** | **Prepaid Expenses and Other Current Assets** | **Accrued Other** | **Accrued Other** |
| | **December 31,<br>2025** | **March 31,<br>2025** | **December 31,<br>2025** | **March 31,<br>2025** | **December 31,<br>2025** | **March 31,<br>2025** |
| Derivatives Designated as Hedging Instruments: |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Forward contracts | $12201 | $10649 | $95 | $197 | $75 | $55 |
| Derivatives Not Designated as Hedging Instruments: |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Forward contracts | 5437 |  |  |  | 13 |  |
|  |  |  | $95 | $197 | $88 | $55 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(a) Notional amounts represent the gross contract/notional amount of the derivatives outstanding.

The following table provides the effect that foreign exchange forward contracts designated as hedging instruments had on other comprehensive (loss) income and results of operations for the three months ended December 31, 2025 and 2024 (in thousands):

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Gain (Loss) Recognized in OCI on Derivative (a)** | **Gain (Loss) Recognized in OCI on Derivative (a)** | **Gain (Loss) Reclassified from Accumulated OCI into Income (b)** | **Gain (Loss) Reclassified from Accumulated OCI into Income (b)** | **Gain (Loss) Reclassified from Accumulated OCI into Income (b)** |
| | **December 31,<br>2025** | **December 31,<br>2024** | **Location** | **December 31,<br>2025** | **December 31,<br>2024** |
| Forward contracts | $66 | $(576) | Research and development | $18 | $7 |
|  |  |  | Sales and marketing | (20) | 107 |
|  | $66 | $(576) |  | $(2) | $114 |

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&nbsp;&nbsp;&nbsp;&nbsp;(a)The amount represents the change in fair value of derivative contracts due to changes in spot rates.

&nbsp;&nbsp;&nbsp;&nbsp;(b)The amount represents reclassification from other comprehensive income (loss) to earnings that occurs when the hedged item affects earnings.

The following table provides the effect that foreign exchange forward contracts not designated as hedging instruments had on the Company's results of operations for the three months ended December 31, 2025 and 2024 (in thousands):

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| | | | |
|:---|:---|:---|:---|
| | **Loss Recognized in Income (a)** | **Loss Recognized in Income (a)** | **Loss Recognized in Income (a)** |
| | **Location** | **December 31,<br>2025** | **December 31,<br>2024** |
| Forward contracts | General and administrative | $(13) | $— |
|  |  | $(13) | $— |

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&nbsp;&nbsp;&nbsp;&nbsp;(a)The amount represents the change in fair value of derivative contracts due to changes in spot rates.

The following table provides the effect that foreign exchange forward contracts designated as hedging instruments had on other comprehensive income and results of operations for the nine months ended December 31, 2025 and 2024 (in thousands):

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Gain (Loss) Recognized in OCI on Derivative (a)** | **Gain (Loss) Recognized in OCI on Derivative (a)** | **Gain (Loss) Reclassified from Accumulated OCI into Income (b)** | **Gain (Loss) Reclassified from Accumulated OCI into Income (b)** | **Gain (Loss) Reclassified from Accumulated OCI into Income (b)** |
| | **December 31,<br>2025** | **December 31,<br>2024** | **Location** | **December 31,<br>2025** | **December 31,<br>2024** |
| Forward contracts | $214 | $(418) | Research and development | $26 | $11 |
|  |  |  | Sales and marketing | (345) | 148 |
|  | $214 | $(418) |  | $(319) | $159 |

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&nbsp;&nbsp;&nbsp;&nbsp;(a)The amount represents the change in fair value of derivative contracts due to changes in spot rates.

&nbsp;&nbsp;&nbsp;&nbsp;(b)The amount represents reclassification from other comprehensive income (loss) to earnings that occurs when the hedged item affects earnings.

The following table provides the effect that foreign exchange forward contracts not designated as hedging instruments had on the Company's results of operations for the nine months ended December 31, 2025 and 2024 (in thousands):

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| | | | |
|:---|:---|:---|:---|
| | **Loss Recognized in Income (a)** | **Loss Recognized in Income (a)** | **Loss Recognized in Income (a)** |
| | **Location** | **December 31,<br>2025** | **December 31,<br>2024** |
| Forward contracts | General and administrative | $(13) | $— |
|  |  | $(13) | $— |

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&nbsp;&nbsp;&nbsp;&nbsp;(a)The amount represents the change in fair value of derivative contracts due to changes in spot rates.

**NOTE 10 – LONG-TERM DEBT**

On July 27, 2021, the Company amended and extended its existing credit facility (as amended, the Second Amended and Restated Credit Agreement), which provided for a five-year, $800.0 million senior secured revolving credit facility, including a letter of credit sub-facility of up to $75.0 million. The commitments under the Second Amended and Restated Credit Agreement were set to expire on July 27, 2026, and any outstanding loans are due on that date. On May 13, 2024, the Company repaid $25.0 million of borrowings under the Second Amended and Restated Credit Agreement.

On October 4, 2024, the Company amended and restated the Second Amended and Restated Credit Agreement (as amended and restated, the Third Amended and Restated Credit Agreement) with a syndicate of lenders by and among: the Company, as borrower; certain subsidiaries of NetScout Systems, Inc., as borrower; JPMorgan Chase Bank, N.A., as administrative agent and collateral agent; JPMorgan Chase Bank, N.A., Bank of America, N.A., RBC Capital Markets, PNC Capital Markets LLC and Mizuho Bank, Ltd, as joint lead arrangers and joint bookrunners; TD Bank, N.A. and Silicon Valley Bank, a division of First-Citizens Bank & Trust Company, as co-documentation agents; and the lenders and issuing banks party thereto.

The Third Amended and Restated Credit Agreement provides for a new five-year, $600.0 million senior secured revolving credit facility, including a letter of credit sub-facility of up to $75.0 million. The Company may elect to use the amended credit facility for working capital and other general corporate purposes (including to repurchase shares of the Company's common stock). The commitments under the Third Amended and Restated Credit Agreement will expire on October 4, 2029, and any outstanding loans will be due on that date.

In connection with the Third Amended and Restated Credit Agreement, the Company paid off the outstanding balance of $75.0 million under the Second Amended and Restated Credit Agreement on October 4, 2024 by borrowing the same amount under the Third Amended and Restated Credit Agreement. Additionally, the Company recorded a loss on the extinguishment of debt of $1.1 million, representing the write off of unamortized deferred financing costs, which was included in interest expense in the consolidated statements of operations for the fiscal year ended March 31, 2025. On February 3, 2025, the Company paid

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the outstanding balance of $75.0 million in full under the Third Amended and Restated Credit Agreement. At December 31, 2025 and March 31, 2025, there were no amounts outstanding under the Third Amended and Restated Credit Agreement.

At the Company's election, revolving loans under the Third Amended and Restated Credit Agreement bear interest at either (a) a term SOFR rate plus a credit spread adjustment of 0.10% or (b) an Alternate Base Rate (defined in a customary manner), in each case plus an applicable margin. For the period from the delivery of our financial statements for the quarter ended September 30, 2025, until the Company has delivered financial statements for the quarter ended December 31, 2025, the applicable margin will be 1.00% per annum for term SOFR loans and 0% per annum for Alternate Base Rate loans, and thereafter the applicable margin will vary depending on the Company's consolidated gross leverage ratio, ranging from 1.00% per annum for Alternate Base Rate loans and 2.00% per annum for term SOFR loans if the Company's consolidated gross leverage ratio is greater than 3.50 to 1.00, down to 0% per annum for Alternate Base Rate loans and 1.00% per annum for term SOFR loans if the Company's consolidated gross leverage ratio is equal to or less than 1.50 to 1.00.

The Company's consolidated gross leverage ratio is the ratio of its consolidated total debt compared to its consolidated EBITDA as defined in the Third Amended and Restated Credit Agreement (consolidated adjusted EBITDA). Consolidated adjusted EBITDA includes certain adjustments, including, without limitation, adjustments relating to extraordinary, unusual or non-recurring charges, certain restructuring charges, non-cash charges, certain transaction costs and expenses and certain pro forma adjustments in connection with material acquisitions and dispositions, all as set forth in detail in the Third Amended and Restated Credit Agreement.

Commitment fees will accrue on the daily unused amount of the credit facility. For the period from the delivery of our financial statements for the quarter ended September 30, 2025, until the Company has delivered financial statements for the quarter ended December 31, 2025, the commitment fee will be 0.15% per annum, and thereafter the commitment fee will vary depending on the Company's consolidated gross leverage ratio, ranging from 0.30% per annum if the Company's consolidated gross leverage ratio is greater than 2.75 to 1.00, down to 0.15% per annum if the Company's consolidated gross leverage ratio is equal to or less than 1.50 to 1.00.

Letter of credit participation fees are payable to each lender providing the letter of credit sub-facility on the amount of such lender's letter of credit exposure, during the period from the closing date of the Third Amended and Restated Credit Agreement to, but excluding, the date which is the later of (i) the date on which such lender's commitment terminates or (ii) the date on which such lender ceases to have any letter of credit exposure, at a rate per annum equal to the applicable margin for term SOFR loans. Additionally, the Company will pay a fronting fee to each issuing bank in amounts to be agreed to between the Company and the applicable issuing bank.

Interest on Alternate Base Rate loans is payable at the end of each calendar quarter. Interest on term SOFR loans is payable at the end of each interest rate period or at the end of each three-month interval within an interest rate period if the period is longer than three months. The Company may also prepay loans under the Third Amended and Restated Credit Agreement at any time, without penalty, subject to certain notice requirements.

The loans and other obligations under the credit facility are (a) guaranteed by each of the Company's wholly-owned material domestic restricted subsidiaries, subject to certain exceptions, and (b) secured by substantially all of the assets of the Company and the subsidiary guarantors, including a pledge of all the capital stock of material subsidiaries held directly by the Company and the subsidiary guarantors (which pledge, in the case of any foreign subsidiary, is limited to 65% of the voting stock), subject to certain customary exceptions and limitations. The Third Amended and Restated Credit Agreement generally prohibits any other liens on the assets of the Company and its restricted subsidiaries, subject to certain exceptions as described in the Third Amended and Restated Credit Agreement.

The Third Amended and Restated Credit Agreement contains certain covenants applicable to the Company and its restricted subsidiaries, including, without limitation, limitations on additional indebtedness, liens, various fundamental changes, dividends and distributions, investments (including acquisitions), transactions with affiliates, asset sales, including sale-leaseback transactions, speculative hedge agreements, payment of junior financing, changes in business and other limitations customary in senior secured credit facilities. The Third Amended and Restated Credit Agreement provides for certain baskets that are available to the Company and its restricted subsidiaries to incur additional indebtedness, to repay junior financing, for asset sales and to make investments and restricted payments. Such baskets are substantially similar to the baskets set forth in the Company's previous amended credit agreement.

The Third Amended and Restated Credit Agreement requires the Company to maintain a certain consolidated net leverage ratio. The Company's consolidated net leverage ratio is the ratio of its Consolidated Total Debt minus the lesser of unrestricted cash and 125% of adjusted consolidated EBITDA compared to its adjusted consolidated EBITDA. The Company's maximum consolidated net leverage ratio is 4.00 to 1.00. These covenants and limitations are more fully described in the Third Amended and Restated Credit Agreement. At December 31, 2025, the Company was in compliance with all covenants, including the specified total consolidated net leverage ratio range of 4.00 to 1.00.

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The Third Amended and Restated Credit Agreement provides that events of default will exist in certain circumstances, including failure to make payment of principal or interest on the loans when required, failure to perform certain obligations under the Third Amended and Restated Credit Agreement and related documents, defaults under certain other indebtedness, certain insolvency events, certain events arising under ERISA, a change of control and certain other events. Upon an event of default, the administrative agent may, or at the request of the holders of more than 50% in principal amount of the loans and commitments shall, terminate the commitments, accelerate the maturity of the loans and enforce certain other remedies under the Third Amended and Restated Credit Agreement and the other loan documents.

The Company had unamortized capitalized debt issuance costs, net of $2.8 million at December 31, 2025, which are being amortized over the life of the revolving credit facility. The unamortized capitalized debt issuance costs balance of $0.7 million was included as prepaid expenses and other current assets and a balance of $2.1 million was included as other assets in the Company's consolidated balance sheet at December 31, 2025.

**NOTE 11 – RESTRUCTURING CHARGES**

During the fiscal year 2025, the Company implemented a voluntary separation program (VSP) for employees who met certain age and service requirements to reduce overall headcount. As a result of the related workforce reduction, the Company recorded restructuring charges of $19.6 million to one-time termination benefits for one hundred forty-two employees who voluntarily terminated their employment with the Company during the fiscal year ended March 31, 2025. All one-time termination benefits were completed in full during the first quarter of the fiscal year ending March 31, 2026.

In addition to the VSP, during the third quarter of fiscal year 2025, the Company entered into transition agreements that provided termination benefits for certain employees to ensure an orderly transition of responsibilities for continuity purposes. As a result of the related workforce changes, during the fiscal year ended March 31, 2025, the Company recorded restructuring charges totaling $0.9 million. During the nine months ended December 31, 2025, the Company recorded restructuring charges of $0.9 million. The Company estimates approximately $0.1 million in remaining additional restructuring charges that will be recorded through the fiscal year ending March 31, 2027. A majority of the one-time termination benefits were paid in full by the end of the second quarter of fiscal year ending March 31, 2026, with the remaining amounts expected to be paid in full by the end of the fiscal year ending March 31, 2027.

The following table provides a summary of the activity related to the restructuring plan and the related restructuring

liability (in thousands):

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| | | | |
|:---|:---|:---|:---|
| | **Q1 FY25 VSP** | **Q3 FY25 Plan** | |
| | **Employee-Related** | **Employee-Related** | **Total** |
| Balance at March 31, 2025 | $9 | $906 | $915 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Restructuring charges to operations |  | 858 | 858 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cash payments | (9) | (1649) | (1658) |
| Balance at December 31, 2025 | $— | $115 | $115 |

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**NOTE 12 – LEASES**

The Company determines if an arrangement is a lease at inception. Right-of-use (ROU) assets represent the Company's right to use an underlying asset for the duration of the lease term. Lease liabilities represent the Company's contractual obligation to make lease payments over the lease term. The Company's policy is to combine lease and non-lease components and to not recognize ROU assets and lease liabilities for short-term leases. Leases with an initial term of twelve months or less are classified as short-term leases. ROU assets are recorded and recognized at commencement for the lease liability amount, plus initial direct costs incurred less lease incentives received. Lease liabilities are recorded at the present value of future lease payments over the lease term at commencement. The discount rate used is generally the Company's estimated incremental borrowing rate unless the lessor's implicit rate is readily determinable. Incremental borrowing rates are calculated periodically to estimate the rate the Company would pay to borrow the funds necessary to obtain an asset of similar value over a similar term. Lease expenses relating to operating leases are recognized on a straight-line basis over the lease term.

The Company has operating leases for administrative, research and development, sales and marketing and manufacturing facilities and equipment under various non-cancelable lease agreements. The Company's leases have remaining lease terms ranging from 1 year to 6 years. The Company's lease terms may include options to extend or terminate the lease where it is reasonably certain that the Company will exercise those options. The Company considers several economic factors when making this determination, including but not limited to, the significance of leasehold improvements incurred in the office space, the difficulty in replacing the asset, underlying contractual obligations, or specific characteristics unique to a particular lease. The Company's lease agreements do not contain any material residual value guarantees or material restrictive covenants.

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The Company has asset retirement obligations (ARO) to return certain leased facilities to their original condition at the end of the respective lease term. The estimated fair value of these ARO liabilities is recognized in the period in which the liability is generated and a corresponding increase to the carrying value of the related asset is recorded and depreciated over the useful life of the asset. The Company's estimates of its ultimate AROs could change because of changes in regulations, the extent of environmental remediations required, the means of reclamation, cost estimates, exit or disposal activities or time period estimates. ARO liabilities totaled $2.3 million and $2.2 million at December 31, 2025 and March 31, 2025, respectively. ARO liabilities are included in other long-term liabilities in the consolidated balance sheets at December 31, 2025 and March 31, 2025, respectively. Accretion expense related to these liabilities was not material for any periods presented.

Most of the Company's lease agreements contain variable payments, primarily for common area maintenance, which are expensed as incurred and not included in the measurement of the ROU assets and lease liabilities.

The components of operating lease cost for the three and nine months ended December 31, 2025 and 2024, respectively, were as follows (in thousands):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| Lease cost under long-term operating leases | $2767 | $2962 | $8495 | $8889 |
| Lease cost under short-term operating leases | 437 | 334 | 1174 | 993 |
| Variable lease cost under short-term and long-term operating leases | 924 | 1074 | 2977 | 3152 |
| &nbsp;&nbsp;&nbsp;&nbsp; Total operating lease cost | $4128 | $4370 | $12646 | $13034 |

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The table below presents supplemental cash flow information related to leases during the nine months ended December 31, 2025 and 2024 (in thousands):

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| | | |
|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** |
| | **2025** | **2024** |
| Right-of-use assets obtained in exchange for new operating lease liabilities | $7483 | $2080 |

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At December 31, 2025 and March 31, 2025, the weighted average remaining lease term in years and weighted average discount rate were as follows:

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| | | |
|:---|:---|:---|
| | **December 31, 2025** | **March 31, 2025** |
| Weighted average remaining lease term in years - operating leases | 4.46 | 4.77 |
| Weighted average discount rate - operating leases | 4.4% | 4.4% |

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Future minimum payments under non-cancellable leases at December 31, 2025 are as follows (in thousands):

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| | |
|:---|:---|
| Year ending March 31: |  |
| 2026 (remaining three months) | $1852 |
| 2027 | 11476 |
| 2028 | 10351 |
| 2029 | 9231 |
| 2030 | 7932 |
| Thereafter | 5014 |
| &nbsp;&nbsp;&nbsp;&nbsp; Total lease payments | $45856 |
| &nbsp;&nbsp;&nbsp;&nbsp; Less imputed interest | (4052) |
| &nbsp;&nbsp;&nbsp;&nbsp; Present value of lease liabilities | $41804 |

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**NOTE 13 – COMMITMENTS AND CONTINGENCIES**

From time to time, we may be subject to legal proceedings and claims in the ordinary course of business. In the opinion of management, none of the Company's current legal proceedings and claims, if determined adversely and based on the

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information known to the management as of the date of this Quarterly Report, is expected to have a material adverse effect on our financial condition, results of operations or cash flows.

**NOTE 14 – PENSION BENEFIT PLANS**

Certain of the Company's non-U.S. employees participate in noncontributory defined benefit pension plans. None of the Company's employees in the U.S. participate in any noncontributory defined benefit pension plans. In general, these plans are funded based on considerations relating to legal requirements, underlying asset returns, the plan's funded status, the anticipated deductibility of the contribution, local practices, market conditions, interest rates and other factors.

The following sets forth the components of the Company's net periodic pension cost of the noncontributory defined benefit pension plans recorded in operating expenses in the consolidated statements of operations for the three and nine months ended December 31, 2025 and 2024 (in thousands):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| Service cost | $44 | $46 | $131 | $142 |
| Interest cost | 280 | 238 | 834 | 739 |
| Amortization of net gain | (164) | (113) | (489) | (350) |
| &nbsp;&nbsp;&nbsp;&nbsp;Net periodic pension cost | $160 | $171 | $476 | $531 |

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**Expected Contributions**

During the nine months ended December 31, 2025, the Company made contributions of $0.6 million to its defined benefit pension plans. During the fiscal year ending March 31, 2026, the Company's cash contribution requirements for its defined benefit pension plans are expected to be less than $1.0 million. As a majority of the participants within the Company's plans are all active employees, the benefit payments are not expected to be material in the foreseeable future.

**NOTE 15 – TREASURY STOCK**

On May 3, 2022, the Company's board of directors approved a share repurchase program that enables the Company to repurchase up to twenty-five million shares of its common stock (2022 Share Repurchase Program). The 2022 Share Repurchase Program became effective in the third quarter of fiscal year 2024. The Company is not obligated to acquire any specific amount of common stock within any particular timeframe as a result of the 2022 Share Repurchase Program. Through December 31, 2025, the Company repurchased 3,478,951 shares for $73.2 million under the 2022 Share Repurchase Program. The Company repurchased 1,502,230 shares for $31.6 million under this share repurchase program during the nine months ended December 31, 2025. At December 31, 2025, 21,521,049 shares of common stock remained available to be purchased under the current program.

In connection with the delivery of shares of the Company's common stock upon vesting of restricted stock units, the Company withheld 0.7 million shares and 0.7 million shares at a cost of $15.7 million and $13.8 million, respectively, related to minimum statutory tax withholding requirements during the nine months ended December 31, 2025 and 2024, respectively. These withholding transactions do not fall under the share repurchase programs described above, and therefore do not reduce the number of shares that are available for repurchase under those programs.

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**NOTE 16 – NET INCOME (LOSS) PER SHARE**

Calculations of the basic and diluted net income (loss) per share and potential common shares are as follows (in thousands, except for per share data):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| **Numerator:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Net income (loss) | $55142 | $48810 | $77291 | $(385539) |
| **Denominator:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Denominator for basic net income (loss) per share - weighted average shares outstanding | 72211 | 71737 | 72007 | 71551 |
| &nbsp;&nbsp;&nbsp;&nbsp;Dilutive common equivalent shares: |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Weighted average restricted stock units | 1609 | 832 | 1188 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Denominator for diluted net income (loss) per share - weighted average shares outstanding | $73820 | $72569 | $73195 | $71551 |
| **Net income (loss) per share:** |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Basic net income (loss) per share | $0.76 | $0.68 | $1.07 | $(5.39) |
| &nbsp;&nbsp;&nbsp;&nbsp;Diluted net income (loss) per share | $0.75 | $0.67 | $1.06 | $(5.39) |

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The following table sets forth restricted stock units excluded from the calculation of diluted net income (loss) per share, since their inclusion would be anti-dilutive (in thousands):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| Restricted stock units | 519 | 1944 | 2185 | 534 |

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Basic net income (loss) per share is calculated by dividing net income (loss) by the weighted average number of shares outstanding during the period. Diluted net income (loss) per share is calculated by dividing net income (loss) by the weighted average number of shares outstanding plus the dilutive effect, if any, of outstanding stock options, restricted shares and restricted stock units using the treasury stock method. The calculation of the dilutive effect of outstanding equity awards under the treasury stock method includes consideration of proceeds from the assumed exercise of stock options and unrecognized compensation expense as additional proceeds. As the Company incurred a net loss during the nine months ended December 31, 2024, all outstanding restricted stock units (including performance-based restricted stock units) have an anti-dilutive effect and are therefore excluded from the computation of diluted weighted average shares outstanding.

**NOTE 17 – INCOME TAXES**

Generally, the Company's effective tax rate differs from the U.S. federal statutory income tax rate primarily due to foreign withholding taxes and U.S. taxation on foreign earnings, which are partially offset by research and development tax credits and the foreign derived intangible income deduction.

The Company's effective tax rates were 17.2% and 14.9% for the three months ended December 31, 2025 and 2024, respectively. The effective tax rate for the three months ended December 31, 2025 differed from the effective tax rate for the three months ended December 31, 2024, primarily due to a decrease in the research and development tax credit and an increase in foreign derived intangible income deduction.

The Company's effective tax rates were 18.8% and 0.4% for the nine months ended December 31, 2025 and 2024, respectively. The effective tax rate for the nine months ended December 31, 2025 differed from the effective tax rate for the nine months ended December 31, 2024 primarily due to a decrease in the research and development tax credit and an increase in foreign derived intangible income deduction. Also contributing to the effective tax rate change was an impact related to stock compensation and goodwill impairment incurred during the nine months ended December 31, 2024, which was not deductible for tax purposes.

On July 4, 2025, U.S tax legislation was signed into law (known as the "One Big Beautiful Bill Act" or "OBBBA") which makes permanent many of the tax provisions enacted in 2017 as part of the Tax Cuts and Jobs Act that were set to expire at the end of 2025. In addition, the OBBBA makes changes to certain U.S. corporate tax provisions, with many generally effective starting 2026. The Company does not expect OBBBA to have a material impact on the results of operations.

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**NOTE 18 – SEGMENT AND GEOGRAPHIC INFORMATION**

The Company's operating segments are determined based on the units that constitute a business for which discrete financial information is available and for which operating results are regularly reviewed by the chief operating decision maker (CODM). The Company's President and CEO is the CODM. Operating results are reviewed by the CODM primarily at the consolidated entity level for the purpose of making resource allocation decisions and for evaluating financial performance, primarily by monitoring actual results compared to forecasted results as well as by reviewing year-over-year results. The Company's CODM evaluates company-wide performance and determines allocation of resources based on multiple performance measures, including but not limited to net income (loss).

The Company has determined it operates as a single operating segment and has one reportable segment, which includes product and service revenue related to the sale of enterprise performance management, carrier service assurance, cybersecurity, and Distributed Denial-of-Service protection solutions. The Company's results for the one reportable segment are the same as presented in the Company's consolidated statements of operations and there is no expense information that is supplemental to those disclosed in these consolidated financial statements, which are regularly provided to the CODM. The measure of segment assets is reported on the Company's consolidated balance sheet as total assets. Segment asset information is not used by the CODM to allocate resources.

The Company manages its business in the following geographic areas: United States, Europe, Asia and the rest of the world. The Company's policies mandate compliance with economic sanctions and the export controls.

Total revenue by geography is as follows (in thousands):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| United States | $141205 | $153875 | $372873 | $365059 |
| Europe | 49361 | 46619 | 113705 | 110107 |
| Asia | 15303 | 18237 | 45634 | 47163 |
| Rest of the world | 44814 | 33288 | 124235 | 95363 |
|  | $250683 | $252019 | $656447 | $617692 |

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The United States revenue includes sales to resellers in the United States. These resellers fulfill customer orders and may subsequently ship the Company's products to international locations. Further, the Company determines the geography of its sales after considering where the contract originated. A majority of revenue attributable to locations outside of the United States is a result of export sales. Substantially all of the Company's identifiable assets are located in the United States.

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***Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations***

*You should read the following discussion and analysis of our financial condition and results of operations in conjunction with the condensed consolidated financial statements and notes thereto included elsewhere in this Quarterly Report and in our Annual Report on Form 10-K for the fiscal year ended March 31, 2025, filed with the Securities and Exchange Commission (SEC) on May 15, 2025 (Annual Report). This discussion contains forward-looking statements that involve risks and uncertainties. When reviewing the discussion below, you should keep in mind the substantial risks and uncertainties that could impact our business. In particular, we encourage you to review the risks and uncertainties described in Part I, Item 1A "Risk Factors" in our Annual Report and Part II, Item 1A of our Quarterly Report on From 10-Q for the fiscal quarter ended September 30, 2025, filed with the SEC on November 6, 2025. These risks and uncertainties could cause actual results to differ significantly from those projected in forward-looking statements contained in this report or implied by past results and trends. Forward-looking statements are statements that attempt to forecast or anticipate future developments in our business, financial condition or results of operations. See the section titled "Cautionary Statement Concerning Forward-Looking Statements" that appears at the beginning of this Quarterly Report. These statements, like all statements in this report, speak only as of the date of this Quarterly Report (unless another date is indicated), and, except as required by law, we undertake no obligation to update or revise these statements in light of future developments.*

***Overview***

Our operating results are influenced by a number of factors, including, but not limited to, the volume, mix, and quantity of products and services sold, pricing, costs and availability of materials used in our products, growth in employee-related costs, including commissions, and the expansion of our operations. Factors that affect our ability to maximize our operating results include, but are not limited to, our ability to introduce and enhance existing products, the marketplace acceptance of those new or enhanced products, continued expansion into international markets, expansion into new or adjacent markets, development of strategic partnerships, competition, successful acquisition and integration efforts, and our ability to control costs, and make improvements in a highly competitive industry.

***Global and Macroeconomic Conditions***

We continue to closely monitor current global and macroeconomic conditions, including the impacts of the ongoing war in Ukraine and hostilities in the Middle East, global geopolitical tension, stock market volatility, industry-specific capital spending trends, exchange rate fluctuations, inflation, interest rates, international trade relations (including trade protection measures, such as tariffs and other trade barriers), and the risk of a recession, including the manner and extent to which they have impacted and could continue to impact our business, customers, employees, supply chain, and distribution network. In addition, our industry is experiencing AI-related supply-chain dynamics which could influence the timing and size of certain customer orders. The full extent of the impacts of these global and macroeconomic conditions remain dynamic. In response to the war in Ukraine, we ceased business operations in Russia, including sales, support on existing contracts and professional services. We remain optimistic but cognizant of ongoing macroeconomic dynamics and constrained customer spending in the service provider market and firmly focused on driving product innovation, returning to annual revenue growth, and enhancing margins through continued disciplined cost management as we navigate the current macroeconomic landscape that may persist through fiscal year 2026. As a result, we have continued our efforts to manage discretionary costs and align spending with the current environment while we continue to execute on our long-term strategic plans.

Though we continue to monitor the impacts of evolving global and macroeconomic conditions on our business, we believe our current cash reserves and access to capital through our revolving credit facility leave us well-positioned to manage our business in today's environment. We expect net cash provided by operations combined with cash, cash equivalents, marketable securities and investments and borrowing availability under our revolving credit facility to provide sufficient liquidity to fund current obligations, capital spending, debt service requirements and working capital requirements over at least the next twelve months. We continue to take actions to manage costs and increase productivity throughout our company, including managing discretionary spending and hiring activities, but are continuing to invest in areas that advance our business

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for the future. In addition to our cash equivalents, the Company had $600 million available under a revolving credit facility based on covenant levels at December 31, 2025.

***Results Overview***

Total revenue increased $38.8 million, or 6%, for the nine months ended December 31, 2025, as compared to total revenue for the nine months ended December 31, 2024. The increase was attributable to an increase in both product and service revenue from both our service assurance and cybersecurity offerings. Within these offerings, both our enterprise and service provider customer verticals contributed to this growth.

Our gross profit percentage increased 2 percentage points to 80% during the nine months ended December 31, 2025, as compared with the nine months ended December 31, 2024, primarily due to increased product revenue growth and a more favorable product mix associated with increased licensing of our software products.

Net income for the nine months ended December 31, 2025 was $77.3 million, as compared with a net loss for the nine months ended December 31, 2024 of $385.5 million. The decrease of $462.8 million in net loss was primarily due to a $427.0 million decrease in goodwill impairment charges, a $38.8 million increase in revenue, $19.0 million decrease from restructuring charges, $5.1 million decrease in interest expense, a $3.0 million decrease in direct material costs, and a $1.8 million increase in interest income. These decreases to net loss were partially offset by a $16.3 million increase in income tax expense, a $10.8 million increase to employee-related expenses primarily due to an increase in variable incentive compensation, and a $5.5 million decrease in other income primarily due to the change in fair value of the equity investment in Napatech that was sold in August 2025.

At December 31, 2025, we had cash, cash equivalents, marketable securities and investments (current and non-current) of $586.2 million. This represents an increase of $93.7 million from $492.5 million at March 31, 2025. This increase was primarily due to $142.3 million of net cash provided by operations, $11.8 million in proceeds from the sale of our entire Napatech equity investment and a $47.1 million in proceeds from the maturity of marketable securities. Partially offsetting the increase was $69.3 million in purchases of marketable securities, $31.6 million used to repurchase shares of our common stock, $15.7 million used for tax withholdings on restricted stock units and $6.9 million used for capital expenditures during the nine months ended December 31, 2025.

***Use of Non-GAAP Financial Measures***

We supplement the United States GAAP financial measures we report in quarterly and annual earnings announcements, investor presentations and other investor communications by reporting the following non-GAAP measures: non-GAAP gross profit, non-GAAP income from operations, non-GAAP operating margin, non-GAAP net income, non-GAAP diluted net income per share, and adjusted EBITDA. Non-GAAP gross profit removes expenses related to the amortization of acquired intangible assets, share-based compensation expense, and acquisition-related depreciation expense. Non-GAAP income from operations includes the aforementioned adjustments related to non-GAAP gross profit and also removes goodwill impairment charges, executive transition costs, and restructuring charges. Non-GAAP operating margin is non-GAAP income from operations expressed as a percentage of revenue. Non-GAAP net income includes the foregoing adjustments related to non-GAAP income from operations, and also removes the income tax effects of such adjustments as well as any loss on extinguishment of debt. Non-GAAP diluted net income per share is non-GAAP net income divided by total outstanding shares on a diluted basis. Adjusted EBITDA (formerly non-GAAP EBITDA from operations) includes the aforementioned adjustments related to non-GAAP net income and also removes interest and other expense, income taxes, and non-acquisition related depreciation from net income (GAAP). Beginning this quarter, we have renamed non-GAAP EBITDA from operations to adjusted EBITDA. We now reconcile this metric to GAAP net income, however, the adjustments included, and the resulting amounts are unchanged from prior periods. This change is intended to align terminology with common market practice.

These non-GAAP measures are not prepared in accordance with GAAP, should not be considered an alternative for measures prepared in accordance with GAAP (gross profit, operating margin, net income, and diluted net income per share), and may have limitations because they do not reflect all our results of operations as determined in accordance with GAAP. These non-GAAP measures should only be used to evaluate our results of operations in conjunction with the corresponding GAAP measures. The presentation of non-GAAP information is not meant to be considered superior to, in isolation from, or as a substitute for results prepared in accordance with GAAP. These non-GAAP measures should not be used to evaluate our results of operations against those of our peers or other companies, as the definitions and calculations of our non-GAAP measures may not be the same as those used by other companies, even if the measures share the same name.

Management believes these non-GAAP financial measures will enhance the reader's overall understanding of our current financial performance and our prospects for the future by providing a higher degree of transparency for certain financial measures and providing a level of disclosure that helps investors understand how management plans and measures our business. We believe that providing these non-GAAP measures to investors provides them with a view of our operating results that may be more easily compared to peer companies and also enables investors to consider our operating results on both a GAAP and non-GAAP basis during and following the integration period of our acquisitions. Presenting the GAAP measures on their own

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may not be indicative of our core operating results. Furthermore, management believes that the presentation of non-GAAP measures when shown in conjunction with the corresponding GAAP measures provides useful information to management and investors regarding present and future business trends relating to our financial condition and results of operations.

The following table reconciles gross profit, income (loss) from operations, net income (loss) and net income (loss) per share on a GAAP and non-GAAP basis for the three and nine months ended December 31, 2025 and 2024, respectively (dollars in thousands, except for per share data):

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| | | | | |
|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** |
| | **2025** | **2024** | **2025** | **2024** |
| Revenue (GAAP) | $250683 | $252019 | $656447 | $617692 |
| GAAP gross profit | $204654 | $205407 | $523386 | $484654 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Share-based compensation expense | 2267 | 2196 | 7654 | 7716 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amortization of acquired intangible assets | 550 | 994 | 1651 | 2985 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Acquisition related depreciation expense | 2 | 1 | 5 | 5 |
| Non-GAAP gross profit | $207473 | $208598 | $532696 | $495360 |
| GAAP income (loss) from operations | $64315 | $61713 | $90237 | $(387488) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Share-based compensation expense | 13832 | 14502 | 47349 | 50586 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amortization of acquired intangible assets | 11706 | 12595 | 35088 | 37842 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Restructuring charges | 25 | 923 | 858 | 19895 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Goodwill impairment |  |  |  | 426967 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Executive transition costs |  |  | 959 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Acquisition related depreciation expense | 12 | 13 | 36 | 36 |
| Non-GAAP income from operations | $89890 | $89746 | $174527 | $147838 |
| GAAP net income (loss) | $55142 | $48810 | $77291 | $(385539) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Share-based compensation expense | 13832 | 14502 | 47349 | 50586 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Amortization of acquired intangible assets | 11706 | 12595 | 35088 | 37842 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Restructuring charges | 25 | 923 | 858 | 19895 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Goodwill impairment |  |  |  | 426967 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Executive transition costs |  |  | 959 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Acquisition-related depreciation expense | 12 | 13 | 36 | 36 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Loss on extinguishment of debt |  | 1134 |  | 1134 |
| &nbsp;&nbsp;&nbsp;&nbsp; Income tax adjustments | (6971) | (9695) | (18019) | (28499) |
| Non-GAAP net income | $73746 | $68282 | $143562 | $122422 |
| GAAP diluted net income (loss) per share | $0.75 | $0.67 | $1.06 | $(5.39) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Per share impact of non-GAAP adjustments identified above | 0.25 | 0.27 | 0.90 | 7.09 |
| Non-GAAP diluted net income per share | $1.00 | $0.94 | $1.96 | $1.70 |
| GAAP net income (loss) | 55142 | 48810 | 77291 | (385539) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Previous adjustments to determine non-GAAP net income | 18604 | 19472 | 66271 | 507961 |
| Non-GAAP net income | 73746 | 68282 | 143562 | 122422 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Interest and other (income) expense, net non-GAAP | (2293) | 3204 | (4925) | (4627) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Depreciation excluding acquisition related depreciation expense | 1781 | 3077 | 7186 | 10312 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Income tax expense non-GAAP | 18437 | 18260 | 35890 | 30043 |
| Adjusted EBITDA | $91671 | $92823 | $181713 | $158150 |

---

------

***Critical Accounting Policies and Estimates***

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with GAAP consistently applied. The preparation of these consolidated financial statements requires us to make significant estimates and judgments that affect the amounts reported in our consolidated financial statements and the accompanying notes. These items are regularly monitored and analyzed by management for changes in facts and circumstances, and material changes in these estimates could occur in the future. Changes in estimates are recorded in the period in which they become known. We base our estimates on historical experience and various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ from our estimates.

While all of our accounting policies impact the consolidated financial statements, certain policies are viewed to be critical. Critical accounting policies are those that are both most important to the portrayal of our financial condition and results of operations and that require management's most subjective or complex judgments and estimates. We consider the following accounting policies to be critical in fully understanding and evaluating our financial results:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• revenue recognition; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;• valuation of goodwill.

Please refer to the critical accounting policies set forth in our Annual Report for a description of all of our critical accounting policies and estimates.

**Three Months Ended December 31, 2025 and 2024** 

**Revenue**

Product revenue consists of sales of our hardware products and licensing of our software products. Service revenue consists of customer support agreements, consulting, training, subscription-based services, and stand-ready software as a service offerings. During the three months ended December 31, 2025, one direct customer and one channel partner each accounted for approximately 10% of total revenue. During the three months ended December 31, 2024, one direct customer and no channel partners accounted for more than 10% of total revenue.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Revenue: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product | $121704 | 49% | $128175 | 51% | (5)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service | 128979 | 51 | 123844 | 49 | 4% |
| Total revenue | $250683 | 100% | $252019 | 100% | (1)% |

---

***Product.*** The 5%, or $6.5 million, decrease in product revenue compared with the same period last year was attributable to a decrease in revenue from service provider customers from service assurance offerings and enterprise customers from cybersecurity offerings.

***Service.*** The 4%, or $5.1 million, increase in service revenue compared with the same period last year was primarily due to an increase in revenue from maintenance contracts as well as cloud and subscription services.

------

Total revenue by geography was as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| United States | $141205 | 56% | $153875 | 61% | (8)% |
| International: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Europe | 49361 | 20 | 46619 | 19 | 6% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Asia | 15303 | 6 | 18237 | 7 | (16)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Rest of the world | 44814 | 18 | 33288 | 13 | 35% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtotal international | 109478 | 44 | 98144 | 39 | 12% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total revenue | $250683 | 100% | $252019 | 100% | (1)% |

---

The 8%, or $12.7 million, decrease in United States revenue compared to the same period last year was primarily due to a decrease in revenue from both service provider customers from service assurance offerings and enterprise customers from cybersecurity offerings, partly offset by an increase in revenue from enterprise customers from service assurance offerings. The 12%, or $11.3 million, increase in international revenue compared with the same period last year was driven by an increase in revenue from service provider and enterprise customers from both cybersecurity and service assurance offerings.

Total revenue by product line was as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Revenue: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service assurance | $158214 | 63% | $162845 | 65% | (3)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cybersecurity | 92469 | 37 | 89174 | 35 | 4% |
| Total revenue | $250683 | 100% | $252019 | 100% | (1)% |

---

The 3%, or $4.6 million, decrease in revenue from the service assurance product line compared to the same period last year was due to a decrease in revenue from service provider customers. The 4%, or $3.3 million, increase in revenue from the cybersecurity product line compared to the same period last year was due to an increase in revenue from enterprise and service provider customers.

Total revenue by customer vertical was as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Revenue: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service provider | $112179 | 45% | $118654 | 47% | (5)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Enterprise | 138504 | 55 | 133365 | 53 | 4% |
| Total revenue | $250683 | 100% | $252019 | 100% | (1)% |

---

The 5%, or $6.5 million, decrease in revenue from the service provider customer vertical was due to a decrease in product revenue from service assurance offerings partly offset by an increase from cybersecurity product and service revenue. The 4%, or $5.1 million, increase in revenue from the enterprise customer vertical was due to an increase in product and service revenue

------

from service assurance offerings as well as an increase from cybersecurity service lines, partially offset by a decrease in cybersecurity product lines.

**Cost of Revenue and Gross Profit**

Cost of product revenue consists primarily of material components, manufacturing personnel expenses, packaging materials, overhead and amortization of acquired developed technology and core technology. Cost of service revenue consists primarily of personnel, material, overhead and support costs.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Cost of revenue |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product | $14795 | 6% | $16362 | 6% | (10)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service | 31234 | 12 | 30250 | 12 | 3% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total cost of revenue | $46029 | 18% | $46612 | 18% | (1)% |
| Gross profit: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product $ | $106909 | 43% | $111813 | 44% | (4)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product gross profit % | 88% |  | 87% |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service $ | $97745 | 39% | $93594 | 37% | 4% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service gross profit % | 76% |  | 76% |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total gross profit $ | $204654 |  | $205407 |  | —% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total gross profit % | 82% |  | 82% |  |  |

---

***Product.*** The 10%, or $1.6 million, decrease in cost of product revenue for the three months ended December 31, 2025 compared to the same period last year was primarily driven by a $6.5 million or 5% decrease, in product revenue. Our product gross profit percentage increased 1 percentage point to 88% during the three months ended December 31, 2025 as compared with the three months ended December 31, 2024 due to a more favorable product mix associated with increased licensing of our software products.

***Service***. The 3%, or $1.0 million, increase in cost of service revenue for the three months ended December 31, 2025 compared to the same period last year was primarily driven by a $5.1 million or 4% increase, in service revenue, and an increase in employee-related variable incentive compensation. Our service gross profit percentage was consistent at 76% during the three months ended December 31, 2025 as compared with the three months ended December 31, 2024.

**Operating Expenses**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Research and development | $39635 | 16% | $37753 | 15% | 5% |
| Sales and marketing | 65392 | 26 | 69933 | 28 | (6)% |
| General and administrative | 24131 | 10 | 23484 | 9 | 3% |
| Amortization of acquired intangible assets | 11156 | 4 | 11601 | 5 | (4)% |
| Restructuring charges | 25 |  | 923 |  | (97)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | $140339 | 56% | $143694 | 57% | (2)% |

---

***Research and development.*** Research and development expenses consist primarily of personnel expenses, fees for outside consultants, overhead and related expenses associated with the development of new products and the enhancement of existing products.

------

The 5%, or $1.9 million, increase in research and development expenses for the three months ended December 31, 2025 compared to the same period last year was primarily due to an increase in employee-related variable incentive compensation, partially offset by $0.3 million decrease in depreciation expense.

***Sales and marketing.*** Sales and marketing expenses consist primarily of personnel expenses and commissions, overhead and other expenses associated with selling activities and marketing programs such as trade shows, seminars, advertising and new product launch activities.

The 6%, or $4.5 million, decrease in total sales and marketing expenses for the three months ended December 31, 2025 compared to the same period last year was primarily due to a $4.3 million decrease associated with the timing of trade shows and other events.

***General and administrative.*** General and administrative expenses consist primarily of personnel expenses for executive, finance, legal and human resource employees, overhead and other corporate expenditures.

The 3%, or $0.6 million, increase in general and administrative expenses for the three months ended December 31, 2025 compared to the same period last year was primarily due to an increase in employee-related variable incentive compensation, partially offset by $0.4 million decrease in legal expenses.

**Interest and Other Income (Expense), Net*.*** Interest and other income (expense), net includes interest earned on our cash, cash equivalents and marketable securities, interest expense and other non-operating gains or losses.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Interest and other income (expense), net | $2293 | 1% | $(4338) | (2)% | 153% |

---

The 153%, or $6.6 million, increase in interest and other income (expense), net, for the three months ended December 31, 2025 compared to the same period last year was primarily due to $4.5 million increase in the change in fair value of our prior equity investment in Napatech that was sold in August 2025, a $2.2 million decrease in interest expense, and a $0.7 million increase in interest income. This increase was partially offset by a $0.9 million increase in foreign currency exchange expense.

**Income Tax Expense**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Three Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Income tax expense | $11466 | 5% | $8565 | 3% | 34% |

---

The effective tax rates were 17.2% and 14.9% for the three months ended December 31, 2025 and 2024, respectively. The effective tax rate for the three months ended December 31, 2025 differed from the effective tax rate for the three months ended December 31, 2024, primarily due to a decrease in the research and development tax credit and an increase in foreign derived intangible income deduction.

------

**Nine Months Ended December 31, 2025 and 2024** 

**Revenue**

During the nine months ended December 31, 2025, no direct customers or channel partners accounted for more than 10% of the Company's total revenue. During the nine months ended December 31, 2024, one direct customer and no channel partners accounted for more than 10% of total revenue.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Revenue: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product | $289409 | 44% | $270377 | 44% | 7% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service | 367038 | 56% | 347315 | 56% | 6% |
| Total revenue | $656447 | 100% | $617692 | 100% | 6% |

---

***Product.*** The 7%, or $19.0 million, increase in product revenue compared with the same period last year was attributable to an increase in revenue from enterprise customers from service assurance offerings as well as an increase in revenue from service provider and enterprise customers from cybersecurity offerings. Also contributing to the increase in product revenue was an increase in U.S.Government agency related orders.

***Service.*** The 6%, or $19.7 million, increase in service revenue compared with the same period last year was primarily due to an increase in revenue from maintenance contracts, partly due to the timing of customer maintenance renewals, as well as cloud and subscription services.

Total revenue by geography was as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| United States | $372873 | 57% | $365059 | 59% | 2% |
| International: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Europe | 113705 | 17 | 110107 | 18 | 3% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Asia | 45634 | 7 | 47163 | 8 | (3)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Rest of the world | 124235 | 19 | 95363 | 15 | 30% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtotal international | 283574 | 43 | 252633 | 41 | 12% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total revenue | $656447 | 100% | $617692 | 100% | 6% |

---

The 2%, or $7.8 million, increase in United States revenue compared to the same period last year was primarily due to an increase in revenue from enterprise customers from both service assurance and cybersecurity offerings, partly offset by a decrease in revenue from service provider customers from both service assurance and cybersecurity offerings. Also contributing to the increase was the timing of maintenance renewal orders and an increase in U.S. Government agency related orders. The 12%, or $30.9 million, increase in international revenue compared with the same period last year was driven by an increase in revenue from service provider and enterprise customers from both service assurance and cybersecurity offerings.

------

Total revenue by product line was as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Revenue: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service assurance | $420587 | 64% | $401254 | 65% | 5% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cybersecurity | 235860 | 36 | 216438 | 35 | 9% |
| Total revenue | $656447 | 100% | $617692 | 100% | 6% |

---

The 5%, or $19.3 million, increase in revenue from the service assurance product line compared to the same period last year was due to an increase in revenue from enterprise customers, partially offset by a decrease in service provider product revenue. The 9%, or $19.4 million, increase in revenue from the cybersecurity product line compared to the same period last year was due to an increase in revenue from service provider and enterprise customers. Revenue from both the service assurance and cybersecurity product lines benefited from the timing of maintenance renewals within the fiscal year.

Total revenue by customer vertical was as follows:

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Revenue: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service provider | $272662 | 42% | $266745 | 43% | 2% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Enterprise | 383785 | 58 | 350947 | 57 | 9% |
| Total revenue | $656447 | 100% | $617692 | 100% | 6% |

---

The 2%, or $5.9 million, increase in revenue from the service provider customer vertical was due to an increase in service revenue from both the service assurance and cybersecurity product lines, as well as an increase in product revenue from the cybersecurity product line. The 9%, or $32.8 million, increase in revenue from the enterprise vertical was due to an increase in product and service revenue from both the service assurance and cybersecurity product lines. Revenue from both the service assurance and cybersecurity product lines benefited from the timing of maintenance renewals within the fiscal year.

------

**Cost of Revenue and Gross Profit**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Change** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | **$** | $**%** |
| Cost of revenue |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product | $38317 | 6% | $41806 | 7% | $(3489) | (8)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service | 94744 | 14 | 91232 | 15 | 3512 | 4% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total cost of revenue | $133061 | 20% | $133038 | 22% | $23 | —% |
| Gross profit: |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product $ | $251092 | 38% | $228571 | 37% | $22521 | 10% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Product gross profit % | 87% |  | 85% |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service $ | $272294 | 41% | $256083 | 41% | $16211 | 6% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Service gross profit % | 74% |  | 74% |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total gross profit $ | $523386 |  | $484654 |  | $38732 | 8% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total gross profit % | 80% |  | 78% |  | 2 |  |

---

***Product.*** The 8%, or $3.5 million, decrease in cost of product revenue for the nine months ended December 31, 2025 compared to the same period last year was primarily driven by a 2 percentage point increase in our gross profit percentage to 87% due to a more favorable product mix associated with increased licensing of our software products.

***Service.*** The 4%, or $3.5 million increase in cost of service revenue for the nine months ended December 31, 2025 compared to the same period last year was primarily driven by a $19.7 million, or 6%, increase, in service revenue, and an increase in employee-related variable incentive compensation. The service gross profit percentage was consistent at 74% for the nine months ended December 31, 2025 when compared to the nine months ended December 31, 2024.

**Operating Expenses**

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | | **% of<br>Revenue** | $**%** |
| Research and development | $119693 | 18% |  | $116127 | 19% | 3% |
| Sales and marketing | 200912 | 31 |  | 201489 | 33 | —% |
| General and administrative | 78249 | 12 |  | 72807 | 12 | 7% |
| Amortization of acquired intangible assets | 33437 | 5 |  | 34857 | 6 | (4)% |
| Restructuring | 858 |  |  | 19895 | 3 | (96)% |
| Goodwill impairment |  |  |  | 426967 | 69 | (100)% |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | $433149 | 66% | 0.66 | $872142 | 142% | (50)% |

---

***Research and development.*** The 3%, or $3.6 million, increase in research and development expenses for the nine months ended December 31, 2025 compared to the same period last year was primarily due to an increase in employee-related variable incentive compensation, partially offset by a $1.8 million decrease in employee-related costs due to a reduction in headcount, and a $1.2 million decrease in depreciation expense.

***Sales and marketing.*** The 0%, or $0.6 million, decrease in sales and marketing expenses for the nine months ended December 31, 2025 compared to the same period last year was primarily due to a $1.8 million decrease in employee-related expenses due to a reduction in headcount, $1.6 million decrease associated with trade shows and other events partially offset by an increase in employee-related variable incentive compensation.

------

***General and administrative.*** The 7%, or $5.4 million, increase in general and administrative expenses for the nine months ended December 31, 2025 compared to the same period last year was primarily due to an increase in employee-related variable incentive compensation, a $1.4 million increase in professional services, a $0.7 million increase in software expenses and a $0.5 million increase in legal fees.

***Restructuring charges.*** During the third quarter of fiscal year 2024, we entered into transition agreements that provided termination benefits for certain employees to ensure an orderly transition of responsibilities for continuity purposes. As a result of this related workforce change, during the nine months ended December 31, 2025 we recorded restructuring charges totaling $0.9 million. During the nine months ended December 31, 2024, we recorded restructuring charges totaling $19.9 million related to one-time termination benefits for one hundred forty-two employees who voluntarily terminated their employment during the nine months ended December 31, 2024.

***Goodwill impairment.*** During the first quarter of fiscal year 2025, due to a decrease in our stock price and overall market capitalization, along with other qualitative considerations including the continued impact from the conditions in the macroeconomic environment, it was determined a Triggering Event occurred, indicating goodwill may be impaired. Accordingly, we conducted an interim quantitative impairment test of its goodwill at June 30, 2024 using the market approach to estimate the fair value of its reporting unit. As a result of that interim impairment test, we recorded a $427.0 million goodwill impairment charge during the nine months ended December 31, 2024.

**Interest and Other Income (Expense), Net** 

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Interest and other income (expense), net | $4925 | 1% | $3493 | 1% | 41% |

---

The 41%, or $1.4 million, increase in interest and other income (expense), net, was primarily due to a $5.1 million decrease in interest expense and a $1.8 million increase in interest income. This increase was partially offset by $3.4 million decrease in the change in fair value of our equity investment in Napatech that was sold in August 2025, and a $2.1 million increase in foreign exchange expense during the nine months ended December 31, 2025, when compared to the nine months ended December 31, 2024.

**Income Tax Expense**

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Nine Months Ended** | **Change** |
| | **December 31,** | **December 31,** | **December 31,** | **December 31,** | **Change** |
| | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **(Dollars in Thousands)** | **Change** |
| | **2025** | **2025** | **2024** | **2024** | **Change** |
| | | **% of<br>Revenue** | | **% of<br>Revenue** | $**%** |
| Income tax expense | $17871 | 3% | $1544 | —% | 1057% |

---

Our effective tax rates were 18.8% and 0.4% for the nine months ended December 31, 2025 and 2024, respectively. The effective tax rate for the nine months ended December 31, 2025 differed from the effective rate for the nine months ended December 31, 2024, primarily related to a decrease in the research and development tax credit and an increase in foreign derived intangible income deduction. Also contributing to the effective tax rate change was an impact related to stock compensation and goodwill impairment incurred during the nine months ended December 31, 2024, which was not deductible for tax purposes.

**Backlog**

We produce our products on the basis of our forecast of near-term demand and maintain inventory in advance of receipt of firm orders from customers. We configure our products to customer specifications and generally deliver products shortly after receipt of the purchase order. Service engagements are also included in certain orders. Customers generally may reschedule or cancel unfulfilled orders with little or no penalty. Our total backlog at any particular time is not necessarily indicative of future sales levels. Within total backlog, fulfillable backlog includes what we consider to represent orders that are generally available to be delivered to customers as of the end of the reporting period. Delivery of our fulfillable backlog typically occurs early in the subsequent quarter. However, delivery may be delayed or accelerated due to various other reasons,

------

including but not limited to, changes in timing of customer projects and product delivery schedules, which may not be within our control. Our total combined product backlog at December 31, 2025 was $24.0 million compared to $33.1 million at March 31, 2025. Combined product backlog included fulfillable backlog of $18.7 million and $25.1 million at December 31, 2025 and March 31, 2025, respectively.

**Liquidity and Capital Resources**

Cash, cash equivalents, marketable securities and investments consisted of the following (in thousands):

---

| | | |
|:---|:---|:---|
| | **December 31,<br>2025** | **March 31,<br>2025** |
| Cash and cash equivalents | $540642 | $457415 |
| Short-term marketable securities and investments | 32361 | 34058 |
| Long-term marketable securities | 13151 | 1004 |
| &nbsp;&nbsp;&nbsp;&nbsp;Cash, cash equivalents, marketable securities and investments | $586154 | $492477 |

---

***Cash, cash equivalents, marketable securities and investments***

At December 31, 2025, cash, cash equivalents, and marketable securities totaled $586.2 million, a $93.7 million increase from $492.5 million at March 31, 2025. This increase was primarily due to $142.3 million of net cash provided by operations, $47.1 million in proceeds from sales and maturity of marketable securities, $11.8 million in proceeds from the sale of our entire Napatech equity investment, partially offset by $69.3 million used to purchase marketable securities, $31.6 million used to repurchase shares of our common stock, $15.7 million used for tax withholdings on restricted stock units, $5.6 million due to the effect of exchange rate changes on cash and cash equivalents, and $6.9 million used for capital expenditures, during the nine months ended December 31, 2025. Cash and short-term investments held outside of the United States was approximately $226.3 million.

Cash and cash equivalents were impacted by the following:

---

| | | |
|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** |
| | **(in thousands)** | **(in thousands)** |
| | **2025** | **2024** |
| Net cash provided by operating activities | $142279 | $76149 |
| Net cash (used in) provided by investing activities | $(17364) | $2041 |
| Net cash used in financing activities | $(47250) | $(66534) |

---

***Net cash from operating activities***

Net cash provided by operating activities of $142.3 million for nine months ended December 31, 2025, was primarily attributable to net income, as adjusted for share-based compensation expense, depreciation and amortization, deferred income taxes, goodwill impairment, and a $14.4 million working capital outflow. The working capital outflow was primarily driven by $70.6 million increase in accounts receivable, and a $9.0 million decrease in operating lease liabilities partially offset by $37.2 million increase in deferred revenue, $19.0 million increase in accrued compensation and a $9.4 million decrease in prepaid expenses.

------

***Net cash from investing activities***

---

| | | |
|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** |
| | **(in thousands)** | **(in thousands)** |
| | **2025** | **2024** |
| Net cash (used in) provided by investing activities included the following: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Purchase of marketable securities and investments | $(69312) | $(29348) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Proceeds from sales and maturity of marketable securities | 47102 | 36688 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Proceeds from sale of equity investment | 11772 |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Purchase of fixed assets | (6926) | (4009) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Purchase of intangible assets |  | (1290) |
|  | $(17364) | $2041 |

---

Net cash used in investing activities increased by $19.4 million to $17.4 million during the nine months ended December 31, 2025, compared with $2.0 million of net cash provided by investing activities during the nine months ended December 31, 2024. The increase in net cash used in investing activities was partially due to an additional $40.0 million purchase of marketable securities. Partially offsetting the increase was $11.8 million in proceeds from the sale of our entire Napatech equity investment in August 2025 and a $10.4 million increase in proceeds from the maturity of marketable securities.

***Net cash from financing activities***

---

| | | |
|:---|:---|:---|
| | **Nine Months Ended** | **Nine Months Ended** |
| | **December 31,** | **December 31,** |
| | **(in thousands)** | **(in thousands)** |
| | **2025** | **2024** |
| Net cash used in financing activities included the following: |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Issuance of common stock under stock plans | $2 | $2 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Treasury stock repurchases | (31566) | (25257) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Tax withholding on restricted stock units | (15686) | (13829) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Payment of debt issuance costs |  | (2450) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Repayment of long-term debt |  | (100000) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Proceeds from issuance of long-term debt, net of issuance costs |  | 75000 |
|  | $(47250) | $(66534) |

---

Net cash used in financing activities decreased by $19.3 million to $47.3 million during the nine months ended December 31, 2025, compared with $66.5 million of cash used in financing activities during the nine months ended December 31, 2024.

During the nine months ended December 31, 2025, we repurchased a total of approximately 1.5 million shares for $31.6 million in the open market under the 2022 Share Repurchase Program. During the nine months ended December 31, 2024, we repurchased a total of approximately 1.4 million shares for $25.3 million in the open market under the Share Repurchase Program.

In connection with the delivery of our common stock upon vesting of restricted stock units, we withheld approximately 0.7 million shares at a cost of $15.7 million, and approximately 0.7 million shares at a cost of $13.8 million during the nine months ended December 31, 2025 and 2024, respectively, in each case related to minimum statutory tax withholding requirements on these restricted stock units. These withholding transactions do not fall under the repurchase program described above, and therefore do not reduce the number of shares that are available for repurchase under that program.

During the nine months ended December 31, 2025, there were no amounts outstanding under the Third Amended and Restated Credit Agreement (as defined in Note 10) and therefore no amounts repaid. During the nine months ended December 31, 2024, we repaid $25.0 million of borrowings under the Second Amended and Restated Credit Agreement (as defined in Note 10) as well as $2.5 million in debt issuance costs in connection with the execution of our Third Amended and Restated Credit Agreement.

------

***Sources of Cash and Cash Requirements***

***Credit Facility***

We have a five-year, $600 million senior secured revolving credit facility under our Third Amended and Restated Credit Agreement, which matures on October 4, 2029. The facility includes a $75 million letter-of-credit sub-facility and may be used for working capital and other general corporate purposes.

We had no outstanding borrowings under the facility at December 31, 2025 or March 31, 2025, and the full commitment was available. Borrowings under the facility bear interest at variable rates based on term SOFR or an alternate base rate, plus an applicable margin. We also pay commitment fees on the unused portion of the facility.

The credit agreement contains customary covenants, including a consolidated net leverage ratio requirement and certain limitations on additional indebtedness, liens, investments, dividends, and other matters. We were in compliance with all covenants as of December 31, 2025.

***Cash Requirements***

We are actively managing the business to generate cash flow and believe that we currently have adequate liquidity. We believe that these factors will allow us to meet our anticipated funding requirements for at least the next twelve months.

We have contractual obligations for operating leases, unconditional purchase obligations, pension benefits plans and certain other long-term liabilities. Our obligations related to these items are described further within Management's Discussion and Analysis of Financial Condition and Results of Operations within our Annual Report. We expect net cash provided by operating activities combined with cash, cash equivalents, marketable securities and investments and borrowing availability under our revolving credit facility will provide sufficient liquidity to fund current obligations, capital spending, debt service requirements and working capital requirements over at least the next twelve months. We believe we will meet longer-term expected future cash requirements and obligations through a combination of cash flows from operating activities, available cash balances, and our revolving credit facility. However, macroeconomic conditions, including high inflation and interest rates, international trade relations (including trade protections measures, such as tariffs and other trade barriers), and a potential recession, could increase our anticipated funding requirements or make it more difficult for us to access capital.

A portion of our cash may be used to acquire or invest in complementary businesses or products, to obtain the right to use complementary technologies, or to repurchase shares of our common stock through our stock repurchase programs. From time to time, in the ordinary course of business, we evaluate potential acquisitions of such businesses, products or technologies. If our existing sources of liquidity are insufficient to satisfy our liquidity requirements, we may seek to sell additional equity or debt securities. Macroeconomic conditions, including high interest rates and volatility in the capital markets, may make it difficult for us to secure additional financing on favorable terms or at all. Any sale of additional equity or debt securities could result in additional dilution to our stockholders.

**Recent Accounting Pronouncements**

For information with respect to recent accounting pronouncements on our consolidated financial statements, see Note 1 contained in the "Notes to Consolidated Financial Statements" included in Part I of this Quarterly Report on Form 10-Q.

------

***Item 3. Quantitative and Qualitative Disclosures About Market Risk***

*Interest Rate Risk*. We hold our cash, cash equivalents and investments for working capital purposes. Some of the securities we invest in are subject to market risk. This means that a change in prevailing interest rates may cause the principal amount of the investment to fluctuate. To minimize this risk, we maintain our portfolio of cash, cash equivalents and investments in a variety of securities, including money market funds and government debt securities. The risk associated with fluctuating interest rates is limited to our investment portfolio. Due to the short-term nature of these instruments, we believe that we do not have any material exposure to changes in the fair value of our investment portfolio as a result of changes in interest rates. Declines in interest rates, however, would reduce future interest income. The effect of a hypothetical 10% increase or decrease in overall interest rates would not have had a material impact on our operating results or the total fair value of the portfolio.

We are currently not exposed to any market risks related to fluctuations in interest rates related to our credit facility as we had no debt as of December 31, 2025.

*Foreign Currency Exchange Risk*. As a result of our foreign operations, we face exposure to movements in foreign currency exchange rates, primarily the Euro, British Pound, Canadian Dollar and Indian Rupee. The current exposures arise primarily from expenses denominated in foreign currencies. We currently engage in foreign currency hedging activities in order to limit these exposures. Periodically, we also enter into forward contracts to manage exchange risk associated with third-party transactions and for which we do not elect hedge accounting treatment. We do not use derivative financial instruments for speculative trading purposes.

At December 31, 2025, we had foreign currency forward contracts designated as hedging instruments with notional amounts totaling $12.2 million. The valuation of outstanding foreign currency forward contracts at December 31, 2025 resulted in a liability balance of $0.1 million, for contracts with unfavorable rates in comparison to current market rates, and an asset balance of $0.1 million, for contracts with favorable rates in comparison to current market rates.

At March 31, 2025, we had foreign currency forward contracts designated as hedging instruments with notional amounts totaling $10.6 million. The valuation of outstanding foreign currency forward contracts at March 31, 2025 resulted in a liability balance of $0.1 million, for contracts with unfavorable contract in comparison to current market rates, and an asset balance of $0.2 million, for contracts with favorable rates in comparison to current market rates. The effect of a hypothetical 10% change in foreign currency exchange rates applicable to our business would not have a material impact on our historical consolidated financial statements. As our international operations grow, we will continue to reassess our approach to manage our risk relating to fluctuations in currency rates.

***Item 4. Controls and Procedures***

At December 31, 2025, NetScout, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act. Based upon that evaluation, our principal executive officer and principal financial officer concluded that, at December 31, 2025, our disclosure controls and procedures were effective at the reasonable assurance level in ensuring that material information relating to NetScout, including its consolidated subsidiaries, required to be disclosed by NetScout in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms, including ensuring that such material information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure.

There were no changes in our internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f) that occurred during the period covered by this quarterly report that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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**PART II: OTHER INFORMATION**

***Item 1. Legal Proceedings***

From time to time, we may be subject to legal proceedings and claims in the ordinary course of business. In the opinion of management, none of the Company's current legal proceedings and claims, if determined adversely and based on the information known to the management as of the date of this Quarterly Report, is expected to have a material adverse effect on our financial condition, results of operations or cash flows.

***Item 1A. Risk Factors***

In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part I, Item 1A of our Annual Report and Part II, Item 1A of our Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2025 (Fiscal 2026 Second Quarterly Report). The risks discussed in our Annual Report and Fiscal 2026 Second Quarterly Report could materially affect our business, financial condition and future results. There have been no material changes to those risk factors since we filed our Annual Report and Fiscal 2026 Second Quarterly Report. The risks described here and in our Annual Report and Fiscal 2026 Second Quarterly Report are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially and adversely affect our business, financial condition or operating results.

***Item 2. Unregistered Sales of Equity Securities and Use of Proceeds***

**Sales of Unregistered Securities**

None.

**Purchases of Equity Securities by the Issuer**

The following table provides information about purchases we made during the quarter ended December 31, 2025 of equity securities that are registered by us pursuant to Section 12 of the Exchange Act:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Period** | **Total Number<br>of Shares<br>Purchased** | **Average Price<br>Paid per Share** | **Total Number of<br>Shares Purchased<br>as Part of Publicly<br>Announced Plans<br>or Programs** | **Maximum Number of Shares That May<br>Yet be Purchased<br>Under the Program** |
| 10/1/2025-10/31/2025 |  |  |  | 21521049 |
| 11/1/2025-11/30/2025 |  |  |  | 21521049 |
| 12/1/2025-12/31/2025 |  |  |  | 21521049 |
| Total |  |  |  | 21521049 |

---

On May 3, 2022, the Company's board of directors approved a share repurchase program that enables the Company to repurchase up to twenty-five million shares of its common stock (2022 Share Repurchase Program). The 2022 Share Repurchase Program became effective in the third quarter of fiscal year 2024. The Company is not obligated to acquire any specific amount of common stock within any particular timeframe as a result of the 2022 Share Repurchase Program. During the quarter ended December 31, 2025, the Company did not repurchase any shares of its common stock.

***Item 3. Defaults Upon Senior Securities***

None.

***Item 4. Mine Safety Disclosures***

Not Applicable.

------

***Item 5. Other Information***

**Insider Adoption or Termination of Trading Arrangements:**

During the fiscal quarter ended December 31, 2025, none of our directors or officers adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement," as those terms are defined in Regulation S-K, Item 408, except as described in the table below:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Name & Title** | **Date Adopted** | **Character of Trading Arrangement**<sup>(1)</sup> | **Aggregate Number of Shares of Common Stock to be Purchased or Sold Pursuant to Trading Arrangement** | **Duration**<sup>(2)</sup> | **Date Terminated** |
| John Downing, Executive Vice President, Worldwide Sales Operations | November 11, 2025<sup>(3)</sup> | Rule 10b5-1 Trading Arrangement | Up to 32,000 shares to be sold | February 26, 2027 | N/A |
| Alfred Grasso, Director | November 12, 2025 | Rule 10b5-1 Trading Arrangement | Up to 5,000 shares to be sold | March 15, 2027 | N/A |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Each trading arrangement marked as a "Rule 10b5-1 Trading Arrangement" is intended to satisfy the affirmative defense of Rule 10b5-1(c), as amended (the "Rule").

&nbsp;&nbsp;&nbsp;&nbsp;(2) Represents the expiration date of the Rule 10b5-1 Trading Arrangement. Pursuant to the terms of the Rule 10b5-1 Trading Arrangement, the Rule 10b5-1 Trading Arrangement may terminate earlier upon the occurrence of certain events.

&nbsp;&nbsp;&nbsp;&nbsp;(3) There are no overlapping transactions between Mr. Downing's 10b5-1 trading arrangement adopted on November 11, 2025 and his arrangement adopted on February 20, 2025.

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***Item 6. Exhibits***

---

| | |
|:---|:---|
| <u>[3.1](https://www.sec.gov/Archives/edgar/data/1078075/000119312516715983/d257799dex32.htm)</u> | Composite conformed copy of Third Amended and Restated Certificate of Incorporation of NetScout (as amended) (filed as Exhibit 3.2 to NetScout's current report on Form 8-K, SEC File No. 000-26251, filed on September 21, 2016, and incorporated herein by reference). |
| <u>[3.2](https://www.sec.gov/Archives/edgar/data/1078075/000119312520139065/d876792dex31.htm)</u> | Amended and Restated By-laws of NetScout (filed as Exhibit 3.1 to NetScout's current report on Form 8-K, SEC File No. 000-26251, filed on May 11, 2020 and incorporated herein by reference). |
| <u>[31.1](ntct-ex311_20251231.htm)</u> | Certification of Principal Executive Officer pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |
| <u>[31.2](ntct-ex312_20251231.htm)</u> | Certification of Principal Financial Officer pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 |
| <u>[32.1](ntct-ex321_20251231.htm)</u> | Certification of Principal Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |
| <u>[32.2](ntct-ex322_20251231.htm)</u> | Certification of Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 |
| 101.INS | XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document. |
| 101.SCH | Inline XBRL Taxonomy Extension Schema Document. |
| 101.CAL | Inline XBRL Taxonomy Extension Calculation Linkbase document. |
| 101.DEF | Inline XBRL Taxonomy Extension Definition Linkbase document. |
| 101.LAB | Inline XBRL Taxonomy Extension Label Linkbase document. |
| 101.PRE | Inline XBRL Taxonomy Extension Presentation Linkbase document. |
| 104 | Cover Page Interactive Date File (formatted as Inline XBRL and contained in Exhibits 101). |

---

---

| | |
|:---|:---|
| + | Filed herewith. |
| ++ | Exhibit has been furnished, is not deemed filed and is not to be incorporated by reference into any of the Company's filings under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, irrespective of any general incorporation language contained in any such filing. |

---

------

**SIGNATURES**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

---

| | |
|:---|:---|
| | NETSCOUT SYSTEMS, INC. |
| Date: February 5, 2026 | /s/ Anil K. Singhal |
|  | Anil K. Singhal |
|  | President, Chief Executive Officer and Chairman |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(Principal Executive Officer) |
| Date: February 5, 2026 | /s/ Anthony Piazza |
|  | Anthony Piazza |
|  | Executive Vice President and Chief Financial Officer |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(Principal Financial Officer) |
| Date: February 5, 2026 | /s/ Eric Watt |
|  | Eric Watt |
|  | Chief Accounting Officer |
|  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(Principal Accounting Officer) |

---

## Exhibit 31.1

Exhibit 31.1

**CERTIFICATIONS**

I, Anil K. Singhal, certify that:

1. I have reviewed this quarterly report on Form 10-Q of NetScout Systems, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 5, 2026

---

| |
|:---|
| /s/ Anil K. Singhal |
| Anil K. Singhal |
| President, Chief Executive Officer and Chairman |
| (Principal Executive Officer) |

---

## Exhibit 31.2

Exhibit 31.2

**CERTIFICATIONS**

I, Anthony Piazza, certify that:

1. I have reviewed this quarterly report on Form 10-Q of NetScout Systems, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c)Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d)Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: February 5, 2026

---

| |
|:---|
| /s/ Anthony Piazza |
| Anthony Piazza |
| Executive Vice President and Chief Financial Officer |
| (Principal Financial Officer) |

---

## Exhibit 32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of NetScout Systems, Inc. (the "Company") on Form 10-Q for the period ending December 31, 2025 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Anil K. Singhal, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

---

| |
|:---|
| /s/ Anil K. Singhal |
| Anil K. Singhal |
| President, Chief Executive Officer and Chairman |
| (Principal Executive Officer) |

---

February 5, 2026

This certification accompanies the Form 10-Q to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of NetScout Systems, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Form 10-Q), irrespective of any general incorporation language contained in such filing.

## Exhibit 32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of NetScout Systems, Inc. (the "Company") on Form 10-Q for the period ending December 31, 2025 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Anthony Piazza, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

---

| |
|:---|
| /s/ Anthony Piazza |
| Anthony Piazza |
| Executive Vice President and Chief Financial Officer |
| (Principal Financial Officer) |

---

February 5, 2026

This certification accompanies the Form 10-Q to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of NetScout Systems, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Form 10-Q), irrespective of any general incorporation language contained in such filing.

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