This Privacy Notice explains what personal information Optium SI Pty Ltd (“OptiumSI”, “we”, “us”, or “our”) collects, why we collect it, how we use it, and who we share it with.

This Notice applies when you:

• Visit our website (optiumsi.com)
• Submit an enquiry, demo or trial request via our website or direct outreach
• Are onboarded as a trial user of the SentrFix platform
• Otherwise contact or interact with us

Data handling for enterprise clients is governed separately under applicable subscription and service agreements.

Please read this Notice carefully. By accessing our website or providing your details to us, you agree to the practices described here.

Last Updated: 29 March 2026

Contact and business information

When you enquire about our services, request a trial, or are onboarded as a trial user, we collect information such as your name, business email address, phone number, job title, and organisation name or site/operation you work with.

Site or operation information

When we set up a trial environment for you, we also record the site or operation you are associated with. This is collected directly by OptiumSI staff during onboarding and used solely to configure your environment.

Website and technical data

When you visit our website, we may automatically collect standard technical information such as your IP address, browser type, operating system, and pages visited. This data is used for website security and performance only and is not used to identify you personally.

Cookies

Our website uses cookies — small text files stored on your device — to support basic website functionality and, where analytics tools are in use, to help us understand how visitors interact with our site. We use only strictly necessary cookies and, where applicable, analytics cookies. We do not use advertising or tracking cookies. You can configure your browser to refuse or delete cookies at any time, though some website features may not function correctly if you do so.

We collect and use personal information for the following purposes:

• To respond to enquiries, demo and trial requests
• To set up and support SentrFix trial environments
• To communicate with you about our products and services
• To manage our business relationships and sales activities
• To maintain the security and performance of our website
• To comply with our legal and regulatory obligations
• We will not use your personal information for purposes incompatible with the reason it was collected without first obtaining your consent.

We process your personal information where one or more of the following applies:

• It is necessary to respond to your request or fulfil a service we have agreed to provide
• We have a legitimate business interest in doing so that is not overridden by your rights
• You have given your consent
• We are required to do so by law

OptiumSI operates under the Privacy Act 1988 (Cth) and the Australian Privacy Principles (APPs).

We do not sell, rent, or trade personal information. We may share it with the following categories of recipients:

• Cloud infrastructure providers who host our systems (such as Amazon Web Services, Microsoft Azure, or Google Cloud Platform), under data processing agreements
• Email and CRM platforms we use to manage communications and business relationships
• Our professional advisers (legal, accounting, auditing) under obligations of confidentiality
• Government, regulatory, or law enforcement bodies where required or permitted by law
• A successor entity in the event of a business sale, merger, or restructure, where the recipient is bound by equivalent privacy obligations

A list of specific recipients can be provided upon request.

Some of our third-party service providers may store or process your personal information outside Australia. Where this occurs, we take reasonable steps to ensure those providers are subject to privacy obligations at least comparable to the Australian Privacy Principles, in accordance with APP 8.

Under the Australian Privacy Principles, you have the right to:

• Request access to the personal information we hold about you
• Request correction of information that is inaccurate, incomplete, or out of date
• Make a complaint about how we have handled your personal information

To exercise any of these rights, please contact us at support@optiumsi.com or PO Box 613 PADDINGTON QLD 4064. We will do our best to ensure that our investigation is completed, and a decision on your complaint communicated to you, within 30 days from our receipt of the complaint. We will contact you if we need more time.

If you are not satisfied with our response, you may lodge a complaint with the Office of the Australian Information Commissioner (OAIC):

Office of the Australian Information Commissioner
GPO Box 5218, SYDNEY NSW 2001
Telephone: 1300 363 992
Website: www.oaic.gov.au

Optium SI Pty Ltd ACN 688 012 339 is a Queensland-based technology company building SentrFix, an AI-powered predictive maintenance, fault diagnostics, and guided work execution platform for heavy industry.

Any privacy-related request or enquiry can be directed to:
Email: support@optiumsi.com
Postal: PO Box 613 PADDINGTON QLD 4064

This Privacy Notice was last updated on 29 March 2026. We review and update this Notice periodically to reflect changes in our practices or legal obligations. The current version will always be available on our website. Your continued use of our website or services following any update constitutes your acceptance of the revised Notice.