Quantum Sigma LLC Privacy Policy

Effective Date: April 23, 2026

Quantum Sigma LLC ("Quantum Sigma," "we," "us," or "our") operates www.quantum-sigma.com (the "Site"). This Privacy Policy describes how we collect, use, and protect information from visitors to our Site and explains your rights under applicable federal law, including the Federal Trade Commission Act (15 U.S.C. § 45), and the Texas Data Privacy and Security Act (TDPSA), Tex. Bus. & Com. Code § 541.001 et seq.

1. Information We Collect

We collect the following categories of personal information:

Contact Information

When you submit a contact form on our Site, we collect your name, email address, and phone number. You provide this information voluntarily.

Cookies and Session Data

Our Site uses cookies and similar session-based technologies to support basic Site functionality and improve your browsing experience. This may include session identifiers, browser type, device type, and pages visited. We do not use cookies for cross-site tracking or behavioral advertising.

Usage and Analytics Data

We use Google Analytics to understand how visitors interact with our Site. Google Analytics collects information such as anonymized IP addresses, pages viewed, time spent on pages, and referral sources. Google LLC processes this data on our behalf as a service provider. For more information on how Google handles analytics data, visit Google's Privacy Policy at https://policies.google.com/privacy.

2. How We Use Your Information

We use the information we collect for the following purposes:

• Responding to contact form submissions and visitor inquiries

• Analyzing and improving Site performance and user experience

• Maintaining the security and functionality of the Site

• Complying with applicable legal obligations

3. How We Share Your Information

We do not sell your personal information. We do not share your personal information with third parties for marketing purposes. The only third party that receives data in connection with your use of the Site is Google LLC, which processes analytics data on our behalf as a service provider. Google is contractually prohibited from using this data for its own independent purposes.

4. Data Retention

We retain contact form submissions for as long as necessary to respond to your inquiry and for a reasonable period thereafter for legitimate business and record-keeping purposes. Analytics data is retained in accordance with Google Analytics' default retention settings, which you can review at https://support.google.com/analytics/answer/7667196.

5. Your Rights Under the Texas Data Privacy and Security Act (TDPSA)

If you are a Texas resident, you have the following rights with respect to your personal data:

• Right to Access: You may request confirmation of whether we process your personal data and obtain a copy of that data.

• Right to Correction: You may request that we correct inaccurate personal data we hold about you.

• Right to Deletion: You may request that we delete personal data we have collected from you, subject to applicable exceptions.

• Right to Data Portability: You may request your personal data in a portable, readily usable format.

• Right to Opt Out of Sale or Targeted Advertising: We do not sell personal data, use it for targeted advertising, or engage in profiling that produces legal or similarly significant effects.

To exercise any of these rights, submit a written request to: info@quantum-sigma.com or by mail to the address in Section 11. We will respond within 45 days of receipt. If we require additional time, we will notify you and may extend our response by an additional 45 days.

6. Appeals

If we decline to act on your rights request, you may appeal that decision by submitting a written appeal to info@quantum-sigma.com with the subject line "Privacy Rights Appeal." We will respond to your appeal within 60 days. If your appeal is denied, you may contact the Texas Attorney General's Consumer Protection Division at https://www.texasattorneygeneral.gov for further assistance.

7. Cookies and Tracking Controls

You can manage or disable cookies through your browser settings. Disabling cookies may affect the functionality of certain features on our Site. To opt out of Google Analytics tracking specifically, you may use the Google Analytics Opt-Out Browser Add-On, available at https://tools.google.com/dlpage/gaoptout.

8. Children's Privacy

Our Site is not directed to individuals under 18 years of age, and we do not knowingly collect personal information from minors. If you believe we have inadvertently collected information from an individual under 18, contact us immediately at info@quantum-sigma.com and we will promptly delete that information.

9. Security

We implement reasonable administrative, technical, and physical safeguards designed to protect your personal information from unauthorized access, disclosure, alteration, or loss. No transmission or storage method is entirely secure, and we cannot guarantee absolute security.

10. Updates to This Policy

We may update this Privacy Policy periodically to reflect changes in our practices or applicable law. The effective date at the top of this page reflects the most recent revision. We encourage you to review this policy periodically. Continued use of the Site following any update constitutes your acceptance of the revised policy.

11. Contact Us

For questions about this Privacy Policy or to exercise your rights, contact us at info@quantum-sigma.com.