Extreme Networks 10-K cybersecurity disclosure (Item 1C), fiscal 2026

Item 1C. Cybersecurity

Cybersecurity Risk Management and Strategy

We have developed and implemented a cybersecurity risk management program intended to protect the confidentiality, integrity, and availability of our critical systems and information.

We design and assess our program based on the National Institute of Standards and Technology Cybersecurity Framework ("NIST CSF"). This does not imply that we meet any particular technical standards, specifications, or requirements, only that we use the NIST CSF as a guide to help us identify, assess, and manage cybersecurity risks relevant to our business.

Our cybersecurity risk management program is integrated into our overall enterprise risk management program, and shares common methodologies, reporting channels and governance processes that apply across the enterprise risk management program to other legal, compliance, strategic, operational, and financial risk areas.

Key elements of our cybersecurity risk management program, include, but are not limited to the following:

•

risk assessments designed to help identify material cybersecurity risks to our critical systems, information, products, services, and our broader enterprise IT environment;

•

a security team principally responsible for managing (1) our cybersecurity risk assessment processes, (2) our security controls, and (3) our response to cybersecurity incidents;

•

the use of external service providers, where appropriate, to assess, test or otherwise assist with aspects of our security controls;

•

cybersecurity awareness training of our employees;

•

a cybersecurity incident response plan that includes procedures for responding to cybersecurity incidents; and

•

a third-party risk management process for key service providers, suppliers, and vendors based on our assessment of their criticality to our operations and respective risk profile.

We have not identified risks from known cybersecurity threats, including as a result of any prior cybersecurity incidents, that have materially affected or are reasonably likely to materially affect us, including our operations, business strategy, results of operations, or financial condition . We face risks from cybersecurity threats that, if realized, are reasonably likely to materially affect us, including our operations, business strategy, results of operations, or financial condition. See "Risk Factors – System security risks, data breaches, and cyberattacks could compromise our proprietary information, disrupt our internal operations, impact services to customers, and harm public perception of our products, which could materially adversely affect our business, financial condition, operating results, and future growth prospects ".

Cybersecurity Governance

Our Board considers cybersecurity risk as part of its risk oversight function and has delegated to the Audit Committee oversight of cybersecurity and other information technology risks. The Audit Committee oversees management's implementation of our cybersecurity risk management program.

The Audit Committee receives regular reports from our Chief Information Security Officer ("CISO") regarding any significant cybersecurity incidents, as well as any incidents with lesser impact potential. The Chief Information and Customer Officer ("CICO") and CISO periodically report to the full Board regarding cybersecurity risks and our cyber risk management program. Board members periodically receive presentations on cybersecurity topics from our CICO, our CISO, or external experts as part of the Board's continuing education on topics that impact public companies.

Our management team, including our CICO and our CISO, is responsible for assessing and managing our material risks from cybersecurity threats. The team has primary responsibility for our overall cybersecurity risk management program and supervises both our internal cybersecurity personnel and our retained external cybersecurity consultants. Our CICO and CISO collectively have decades of IT and cybersecurity experience in technology companies, including significant experience in senior-level leadership roles. Additionally, our CISO holds Certified Information Security Manager and Certified in Risk and Information Systems Control certifications. Our CICO and CISO are assisted by a cross-functional Information Security Steering Committee.

Our management team takes steps to stay informed about and monitor efforts to prevent, detect, mitigate, and remediate cybers ecurity risks and incidents through various means, which may include briefings from internal security personnel; threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged by us; and alerts and reports produced by security tools deployed in the IT environment.

Item 1C. Cybersecurity

Cybersecurity Risk Management and Strategy

We have developed and implemented a cybersecurity risk management program intended to protect the confidentiality, integrity, and availability of our critical systems and information.

We design and assess our program based on the National Institute of Standards and Technology Cybersecurity Framework ("NIST CSF"). This does not imply that we meet any particular technical standards, specifications, or requirements, only that we use the NIST CSF as a guide to help us identify, assess, and manage cybersecurity risks relevant to our business.

Our cybersecurity risk management program is integrated into our overall enterprise risk management program, and shares common methodologies, reporting channels and governance processes that apply across the enterprise risk management program to other legal, compliance, strategic, operational, and financial risk areas.

Key elements of our cybersecurity risk management program, include, but are not limited to the following:

•

risk assessments designed to help identify material cybersecurity risks to our critical systems, information, products, services, and our broader enterprise IT environment;

•

a security team principally responsible for managing (1) our cybersecurity risk assessment processes, (2) our security controls, and (3) our response to cybersecurity incidents;

•

the use of external service providers, where appropriate, to assess, test or otherwise assist with aspects of our security controls;

•

cybersecurity awareness training of our employees;

•

a cybersecurity incident response plan that includes procedures for responding to cybersecurity incidents; and

•

a third-party risk management process for key service providers, suppliers, and vendors based on our assessment of their criticality to our operations and respective risk profile.

We have not identified risks from known cybersecurity threats, including as a result of any prior cybersecurity incidents, that have materially affected or are reasonably likely to materially affect us, including our operations, business strategy, results of operations, or financial condition. We face risks from cybersecurity threats that, if realized, are reasonably likely to materially affect us, including our operations, business strategy, results of operations, or financial condition. See "Risk Factors – System security risks, data breaches, and cyberattacks could compromise our proprietary information, disrupt our internal operations, impact services to customers, and harm public perception of our products, which could materially adversely affect our business, financial condition, operating results, and future growth prospects ".

Cybersecurity Governance

Our Board considers cybersecurity risk as part of its risk oversight function and has delegated to the Audit Committee oversight of cybersecurity and other information technology risks. The Audit Committee oversees management's implementation of our cybersecurity risk management program.

The Audit Committee receives regular reports from our Chief Information Security Officer ("CISO") regarding any significant cybersecurity incidents, as well as any incidents with lesser impact potential. The Chief Information Officer ("CIO") and CISO periodically report to the full Board regarding cybersecurity risks and our cyber risk management program. Board members periodically receive presentations on cybersecurity topics from our CIO, our CISO, or external experts as part of the Board's continuing education on topics that impact public companies.

Our management team, including our CIO and our CISO, is responsible for assessing and managing our material risks from cybersecurity threats. The team has primary responsibility for our overall cybersecurity risk management program and supervises both our internal cybersecurity personnel and our retained external cybersecurity consultants. Our CIO and CISO collectively have over five decades of IT and cybersecurity experience in technology companies, including two decades in senior-level leadership roles. Additionally, our CISO holds Certified Information Security Manager and Certified in Risk and Information Systems Control certifications, They are assisted by a cross-functional Information Security Steering Committee.

Our management team takes steps to stay informed about and monitor efforts to prevent, detect, mitigate, and remediate cybersecurity risks and incidents through various means, which may include briefings from internal security personnel; threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged by us; and alerts and reports produced by security tools deployed in the IT environment.