Commitments and Contingencies	12 Months Ended
Jun. 30, 2025
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	9. Commitments and Contingencies Purchase Commitments The Company currently has arrangements with contract manufacturers and suppliers for the manufacture of its products. Those arrangements allow the contract manufacturers to procure long lead-time component inventory based upon a rolling production forecast provided by the Company. The Company is obligated to purchase long lead-time component inventory that its contract manufacturer procures in accordance with the forecast, unless the Company gives notice of order cancellation outside of applicable component lead-times. As of June 30, 2025, the Company had non-cancelable commitments to purchase $45.4 million of inventory, which will be received and consumed during fiscal 2026. The Company expects to utilize its non-cancelable purchase commitments in the normal ongoing operations. Legal Proceedings The Company may from time to time be party to litigation arising in the course of its business, including, without limitation, allegations relating to commercial transactions, business relationships or intellectual property rights. Such claims, even if not meritorious, could result in the expenditure of significant financial and managerial resources. Litigation in general, and intellectual property litigation in particular, can be expensive and disruptive to normal business operations. Moreover, the results of legal proceedings are difficult to predict. In accordance with applicable accounting guidance, the Company records accruals for certain of its outstanding legal proceedings, investigations or claims when it is probable that a liability will be incurred, and the amount of loss can be reasonably estimated. The Company evaluates, at least on a quarterly basis, developments in legal proceedings, investigations or claims that could affect the amount of any accrual, as well as any developments that would result in a loss contingency to become both probable and reasonably estimable. When a loss contingency is not both probable and reasonably estimable, the Company does not record a loss accrual. However, if the loss (or an additional loss in excess of any prior accrual) is at least reasonably possible and material, then the Company would disclose an estimate of the possible loss or range of loss, if such estimate can be made, or disclose that an estimate cannot be made. The assessment of whether a loss is probable or a reasonable possibility, and whether the loss or a range of loss is estimable, involves a series of complex judgments about future events. Even if a loss is reasonably possible, the Company may not be able to estimate a range of possible loss, particularly where (i) the damages sought are substantial or indeterminate, (ii) the proceedings are in the early stages, or (iii) the matters involve novel or unsettled legal theories or a large number of parties. In such cases, there is considerable uncertainty regarding the ultimate resolution of such matters, including the amount of any possible loss, fine or penalty. However, an adverse resolution of one or more of such matters could have a material adverse effect on the Company's results of operations in a particular quarter or fiscal year. As of June 30, 2025, the total estimated litigation expense accrual included in the “Other accrued liabilities” in the consolidated balance sheets was $47.5 million for various ongoing litigation matters with probable losses that can be reasonably estimated. SNMP Research, Inc. and SNMP Research International, Inc. v. Broadcom Inc., Brocade Communications Systems LLC, and Extreme Networks, Inc. On October 26, 2020, SNMP Research, Inc. and SNMP Research International, Inc. (collectively, “SNMP”) filed a lawsuit against the Company in the Eastern District of Tennessee for copyright infringement, alleging that the Company was not properly licensed to use its software. SNMP sought actual damages and profits attributed to the infringement, as well as equitable relief. On March 2, 2023, SNMP filed an amended complaint adding claims against Extreme on additional products for copyright infringement, breach of contract, and fraud. The parties reached a settlement, and on July 29, 2025, the case was dismissed with prejudice. Mala Technologies Ltd. v. Extreme Networks GmbH, Extreme Networks Ireland Ops Ltd., and Extreme Networks, Inc. On April 15, 2021, Mala Technologies Ltd. (“Mala”) filed a patent infringement lawsuit against the Company and its Irish and German subsidiaries in the District Court in Dusseldorf, Germany. The lawsuit alleges indirect infringement of the German portion of a patent (“EP ‘498”) based on the offer and sale in Germany of certain network switches equipped with the ExtremeXOS operating system. Mala is seeking injunctive relief, accounting, and an unspecified declaration of liability for damages and costs of the lawsuit. On December 20, 2022, the trial court ruled that the Company did not infringe the EP ‘498 patent and dismissed Mala’s complaint entirely. Mala has filed an appeal. On December 9, 2024, the Higher Regional Court stayed the matter until the nullity action has been finally decided. The Company filed a nullity complaint against EP ‘498 with the German Federal Patent Court on September 24, 2021. The German Federal Patent Court issued a decision finding that the patent was invalid on November 20, 2024. Mala appealed the decision on March 3, 2025, and the Company will defend the appeal. Steamfitters Local 449 Pension & Retirement Security Funds v. Extreme Networks, Inc., et al. On August 13, 2024, a putative securities class action (the “Class Action”) was filed in the United States District Court for the Northern District of California captioned Steamfitters Local 449 Pension & Retirement Security Funds v. Extreme Networks, Inc., et al., Case No. 5:24-cv-05102-TLT, naming the Company and certain of its current and former executive officers as defendants. The lawsuit is purportedly brought on behalf of purchasers of Extreme Networks securities between July 27, 2022 and January 30, 2024 (the “Class Period”). The complaint alleges claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, and Rule 10b-5 promulgated thereunder, based on allegedly false and misleading statements about the Company's business and prospects during the Class Period. The lawsuit seeks unspecified damages. On December 30, 2024, the Court selected Oklahoma Firefighters Pension and Retirement System, Oklahoma Police Pension and Retirement System, Oakland County Voluntary Employees’ Beneficiary Association, Oakland County Employees’ Retirement System as the lead plaintiffs. The Company's Motion to Dismiss was granted on August 15, 2025, but the plaintiffs were granted leave to file an amended complaint by September 9, 2025. On February 27, 2025, a shareholder derivative case was filed in the United States District Court for the Northern District of California captioned Turner v. Brown et al., Case No. 3:25-cv-02101. On March 6, 2025, a shareholder derivative case was filed in the United States District Court for the Northern District of California captioned Hemani v. Meyercord et al., Case No. 3:25-cv-02318-AGT. On March 25, 2025, a shareholder derivative case was filed in the United States District Court for the Eastern District of North Carolina captioned Miller v. Meyercord et al., Case No. 5:25-cv-00161. Each of these cases (collectively, the “Derivative Cases”) names current and former officers, directors, and employees of the Company as defendants, and seeks recovery on behalf of the Company based on substantially the same allegations as the Class Action. These cases remain stayed pending a potential filing of an amended complaint in the Class Action. Indemnification Obligations Subject to certain limitations, the Company may be obligated to indemnify its current and former directors, officers and employees. These obligations arise under the terms of its certificate of incorporation, its bylaws, applicable contracts, and applicable law. The obligation to indemnify, where applicable, generally means that the Company is required to pay or reimburse, and in certain circumstances the Company has paid or reimbursed, the individuals' reasonable legal expenses and possible damages and other liabilities incurred in connection with certain legal matters. The Company also procures Directors and Officers liability insurance to help cover its defense and/or indemnification costs, although its ability to recover such costs through insurance is uncertain. While it is not possible to estimate the maximum potential amount that could be owed under these governing documents and agreements due to the Company’s limited history with prior indemnification claims, indemnification (including defense) costs could, in the future, have a material adverse effect on the Company’s consolidated financial position, results of operations and cash flows.

Commitments and Contingencies

12 Months Ended

Jun. 30, 2025

Commitments and Contingencies Disclosure [Abstract]

9. Commitments and Contingencies

Purchase Commitments

The Company currently has arrangements with contract manufacturers and suppliers for the manufacture of its products. Those arrangements allow the contract manufacturers to procure long lead-time component inventory based upon a rolling production forecast provided by the Company. The Company is obligated to purchase long lead-time component inventory that its contract manufacturer procures in accordance with the forecast, unless the Company gives notice of order cancellation outside of applicable component lead-times. As of June 30, 2025, the Company had non-cancelable commitments to purchase $45.4 million of inventory, which will be received and consumed during fiscal 2026. The Company expects to utilize its non-cancelable purchase commitments in the normal ongoing operations.

Legal Proceedings

The Company may from time to time be party to litigation arising in the course of its business, including, without limitation, allegations relating to commercial transactions, business relationships or intellectual property rights. Such claims, even if not meritorious, could result in the expenditure of significant financial and managerial resources. Litigation in general, and intellectual property litigation in particular, can be expensive and disruptive to normal business operations. Moreover, the results of legal proceedings are difficult to predict.

In accordance with applicable accounting guidance, the Company records accruals for certain of its outstanding legal proceedings, investigations or claims when it is probable that a liability will be incurred, and the amount of loss can be reasonably estimated. The Company evaluates, at least on a quarterly basis, developments in legal proceedings, investigations or claims that could affect the amount of any accrual, as well as any developments that would result in a loss contingency to become both probable and reasonably estimable. When a loss contingency is not both probable and reasonably estimable, the Company does not record a loss accrual. However, if the loss (or an additional loss in excess of any prior accrual) is at least reasonably possible and material, then the Company would disclose an estimate of the possible loss or range of loss, if such estimate can be made, or disclose that an estimate cannot be made. The assessment of whether a loss is probable or a reasonable possibility, and whether the loss or a range of loss is estimable, involves a series of complex judgments about future events. Even if a loss is reasonably possible, the Company may not be able to estimate a range of possible loss, particularly where (i) the damages sought are substantial or indeterminate, (ii) the proceedings are in the early stages, or (iii) the matters involve novel or unsettled legal theories or a large number of parties. In such cases, there is considerable uncertainty regarding the ultimate resolution of such matters, including the amount of any possible loss, fine or penalty. However, an adverse resolution of one or more of such matters could have a material adverse effect on the Company's results of operations in a particular quarter or fiscal year. As of June 30, 2025, the total estimated litigation expense accrual included in the “Other accrued liabilities” in the consolidated balance sheets was $47.5 million for various ongoing litigation matters with probable losses that can be reasonably estimated.

SNMP Research, Inc. and SNMP Research International, Inc. v. Broadcom Inc., Brocade Communications Systems LLC, and Extreme Networks, Inc.

On October 26, 2020, SNMP Research, Inc. and SNMP Research International, Inc. (collectively, “SNMP”) filed a lawsuit against the Company in the Eastern District of Tennessee for copyright infringement, alleging that the Company was not properly licensed to use its software. SNMP sought actual damages and profits attributed to the infringement, as well as equitable relief. On March 2, 2023, SNMP filed an amended complaint adding claims against Extreme on additional products for copyright infringement, breach of contract, and fraud. The parties reached a settlement, and on July 29, 2025, the case was dismissed with prejudice.

Mala Technologies Ltd. v. Extreme Networks GmbH, Extreme Networks Ireland Ops Ltd., and Extreme Networks, Inc.

On April 15, 2021, Mala Technologies Ltd. (“Mala”) filed a patent infringement lawsuit against the Company and its Irish and German subsidiaries in the District Court in Dusseldorf, Germany. The lawsuit alleges indirect infringement of the German portion of a patent (“EP ‘498”) based on the offer and sale in Germany of certain network switches equipped with the ExtremeXOS operating system. Mala is seeking injunctive relief, accounting, and an unspecified declaration of liability for damages and costs of the lawsuit. On December 20, 2022, the trial court ruled that the Company did not infringe the EP ‘498 patent and dismissed Mala’s complaint entirely. Mala has filed an appeal. On December 9, 2024, the Higher Regional Court stayed the matter until the nullity action has been finally decided.

The Company filed a nullity complaint against EP ‘498 with the German Federal Patent Court on September 24, 2021. The German Federal Patent Court issued a decision finding that the patent was invalid on November 20, 2024. Mala appealed the decision on March 3, 2025, and the Company will defend the appeal.

Steamfitters Local 449 Pension & Retirement Security Funds v. Extreme Networks, Inc., et al.

On August 13, 2024, a putative securities class action (the “Class Action”) was filed in the United States District Court for the Northern District of California captioned Steamfitters Local 449 Pension & Retirement Security Funds v. Extreme Networks, Inc., et al., Case No. 5:24-cv-05102-TLT, naming the Company and certain of its current and former executive officers as defendants. The lawsuit is purportedly brought on behalf of purchasers of Extreme Networks securities between July 27, 2022 and January 30, 2024 (the “Class Period”). The complaint alleges claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934, and Rule 10b-5 promulgated thereunder, based on allegedly false and misleading statements about the Company's business and prospects during the Class Period. The lawsuit seeks unspecified damages. On December 30, 2024, the Court selected Oklahoma Firefighters Pension and Retirement System, Oklahoma Police Pension and Retirement System, Oakland County Voluntary Employees’ Beneficiary Association, Oakland County Employees’ Retirement System as the lead plaintiffs. The Company's Motion to Dismiss was granted on August 15, 2025, but the plaintiffs were granted leave to file an amended complaint by September 9, 2025.

On February 27, 2025, a shareholder derivative case was filed in the United States District Court for the Northern District of California captioned Turner v. Brown et al., Case No. 3:25-cv-02101. On March 6, 2025, a shareholder derivative case was filed in the United States District Court for the Northern District of California captioned Hemani v. Meyercord et al., Case No. 3:25-cv-02318-AGT. On March 25, 2025, a shareholder derivative case was filed in the United States District Court for the Eastern District of North Carolina captioned Miller v. Meyercord et al., Case No. 5:25-cv-00161. Each of these cases (collectively, the “Derivative Cases”) names current and former officers, directors, and employees of the Company as defendants, and seeks recovery on behalf of the Company based on substantially the same allegations as the Class Action. These cases remain stayed pending a potential filing of an amended complaint in the Class Action.

Indemnification Obligations

Subject to certain limitations, the Company may be obligated to indemnify its current and former directors, officers and employees. These obligations arise under the terms of its certificate of incorporation, its bylaws, applicable contracts, and applicable law. The obligation to indemnify, where applicable, generally means that the Company is required to pay or reimburse, and in certain circumstances the Company has paid or reimbursed, the individuals' reasonable legal expenses and possible damages and other liabilities incurred in connection with certain legal matters. The Company also procures Directors and Officers liability insurance to help cover its defense and/or indemnification costs, although its ability to recover such costs through insurance is uncertain. While it is not possible to estimate the maximum potential amount that could be owed under these governing documents and agreements due to the Company’s limited history with prior indemnification claims, indemnification (including defense) costs could, in the future, have a material adverse effect on the Company’s consolidated financial position, results of operations and cash flows.