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Cybersecurity Risk Management, Strategy and Governance | 12 Months Ended
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Mar. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items] |
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block] | Item 1C. Cybersecurity Risk Management and Strategy We have developed and implemented cybersecurity risk management procedures (“CRMP”) intended to protect the confidentiality, integrity, and availability of our critical systems and information. Our CRMP consists of procedures designed for Graham Corporation and certain subsidiaries and separate procedures designed specifically for BN. Our CRMP includes cybersecurity incident response plans (“IRPs”) for Graham Corporation and BN. The purpose of the IRPs are to provide a structured and systematic incident response process for all Information Security Incidents that affect any of our or our subsidiaries’ information technology systems, network, or data, including data of ours and our subsidiaries held, or IT services provided by, third-party vendors or other service providers. O ur CRMP is integrated into our overall enterprise risk management program. We have designated our Senior IT Manager to oversee the implementation and maintenance of the IRP for Graham Corporation. For BN, we have designated BN’s IT Manager to implement and maintain the IRP for BN. Our IT personnel at Graham Corporation and BN have over 50 years of combined experience in the field of cybersecurity and are responsible for the management of our cybersecurity and data privacy programs. Among other information security duties, the Senior IT Manager and IT Manager are responsible for the following for Graham Corporation and BN, respectively: • implementing the IRP; • identifying and managing an incident response team (“IRT”) principally responsible for managing (1) our cybersecurity risk assessment processes, (2) our security controls, and (3) our response to cybersecurity incidents; • coordinating IRT activities, including developing, maintaining, and following appropriate procedures to respond to, appropriately escalate, make decisions regarding, and document identified cybersecurity incidents; • conducting post-incident reviews to gather feedback on identified cybersecurity incident response procedures and address any identified gaps in security measures; • providing training and conducting periodic exercises to promote employee and stakeholder preparedness and awareness of the IRP; and • periodically reviewing the IRP whenever there is a material change in our business practices that may reasonably affect its cybersecurity incident response procedures. Our cybersecurity risk management program includes: • risk assessments designed to help identify material cybersecurity risks to our critical systems, information, products, services, and our broader enterprise IT environment including risks associated with ransomware; • 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, incident response personnel, and senior management; • a cybersecurity incident response plan that includes procedures for responding to cybersecurity incidents; and • a third-party risk management process for service providers, suppliers, and vendors. We have developed processes to identify and oversee risks from cybersecurity threats associated with our third-party service providers, which includes the information security team assisting with and assessing cybersecurity robustness during vendor onboarding as well as risk-based monitoring of vendors on an ongoing basis. We are currently in the process of integrating P3 into our CRMP and IRPs processes for BN. We expect such integration to be completed during fiscal 2026. We may be the subject of cyber incidents in the future. See Item 1A, Risk Factors for more information about the risk posed to us by cybersecurity threats. Governance Our Audit Committee, through their responsibilities designated to them in the Audit Committee Charter, oversees cybersecurity risk management as part of its risk oversight function and oversees management’s implementation of our CRMP. The Audit Committee receives periodic reports from management and the IT Managers for Graham Corporation and BN on our cybersecurity risks at least annually. In addition, management updates the Audit Committee, as necessary, regarding any material cybersecurity incidents, as well as any incidents with lesser impact potential. Our management team is responsible for assessing and managing our material risks from cybersecurity threats. Our Senior IT Manager and IT Manager regularly inform our management team of all aspects related to cybersecurity risks and incidents. This is designed to ensure that the highest levels of management are kept abreast of the cybersecurity posture and potential risks facing the Company. The team has primary responsibility for our overall cybersecurity risk management program and supervises both our internal cybersecurity personnel and our retained cybersecurity consultants. Our management team supervises 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.
Cybersecurity Risk Management Processes Integrated [Flag] | true
Cybersecurity Risk Management Processes Integrated [Text Block] | ur CRMP is integrated into our overall enterprise risk management program. We have designated our Senior IT Manager to oversee the implementation and maintenance of the IRP for Graham Corporation. For BN, we have designated BN’s IT Manager to implement and maintain the IRP for BN. Our IT personnel at Graham Corporation and BN have over 50 years of combined experience in the field of cybersecurity and are responsible for the management of our cybersecurity and data privacy programs.
Cybersecurity Risk Management Third Party Engaged [Flag] | true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag] | true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag] | true
Cybersecurity Risk Board of Directors Oversight [Text Block] | Our Audit Committee, through their responsibilities designated to them in the Audit Committee Charter, oversees cybersecurity risk management as part of its risk oversight function and oversees management’s implementation of our CRMP. The Audit Committee receives periodic reports from management and the IT Managers for Graham Corporation and BN on our cybersecurity risks at least annually. In addition, management updates the Audit Committee, as necessary, regarding any material cybersecurity incidents, as well as any incidents with lesser impact potential. Our management team is responsible for assessing and managing our material risks from cybersecurity threats. Our Senior IT Manager and IT Manager regularly inform our management team of all aspects related to cybersecurity risks and incidents. This is designed to ensure that the highest levels of management are kept abreast of the cybersecurity posture and potential risks facing the Company. The team has primary responsibility for our overall cybersecurity risk management program and supervises both our internal cybersecurity personnel and our retained cybersecurity consultants. Our management team supervises 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.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] | Our Audit Committee, through their responsibilities designated to them in the Audit Committee Charter, oversees cybersecurity risk management as part of its risk oversight function and oversees management’s implementation of our CRMP. The Audit Committee receives periodic reports from management and the IT Managers for Graham Corporation and BN on our cybersecurity risks at least annually. In addition, management updates the Audit Committee, as necessary, regarding any material cybersecurity incidents, as well as any incidents with lesser impact potential.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block] | The Audit Committee receives periodic reports from management and the IT Managers for Graham Corporation and BN on our cybersecurity risks at least annually.
Cybersecurity Risk Role of Management [Text Block] | Among other information security duties, the Senior IT Manager and IT Manager are responsible for the following for Graham Corporation and BN, respectively: • implementing the IRP; • identifying and managing an incident response team (“IRT”) principally responsible for managing (1) our cybersecurity risk assessment processes, (2) our security controls, and (3) our response to cybersecurity incidents; • coordinating IRT activities, including developing, maintaining, and following appropriate procedures to respond to, appropriately escalate, make decisions regarding, and document identified cybersecurity incidents; • conducting post-incident reviews to gather feedback on identified cybersecurity incident response procedures and address any identified gaps in security measures; • providing training and conducting periodic exercises to promote employee and stakeholder preparedness and awareness of the IRP; and • periodically reviewing the IRP whenever there is a material change in our business practices that may reasonably affect its cybersecurity incident response procedures. Our cybersecurity risk management program includes: • risk assessments designed to help identify material cybersecurity risks to our critical systems, information, products, services, and our broader enterprise IT environment including risks associated with ransomware; • 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, incident response personnel, and senior management; • a cybersecurity incident response plan that includes procedures for responding to cybersecurity incidents; and • a third-party risk management process for service providers, suppliers, and vendors.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] | true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] | We have designated our Senior IT Manager to oversee the implementation and maintenance of the IRP for Graham Corporation. For BN, we have designated BN’s IT Manager to implement and maintain the IRP for BN. Our IT personnel at Graham Corporation and BN have over 50 years of combined experience in the field of cybersecurity and are responsible for the management of our cybersecurity and data privacy programs.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block] | Our IT personnel at Graham Corporation and BN have over 50 years of combined experience in the field of cybersecurity and are responsible for the management of our cybersecurity and data privacy programs.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block] | Our management team is responsible for assessing and managing our material risks from cybersecurity threats. Our Senior IT Manager and IT Manager regularly inform our management team of all aspects related to cybersecurity risks and incidents.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] | true

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