CyberArk (CYBR) Merger Disclosure Supplement

This Form 6-K supplements the Proxy Statement regarding the acquisition by Palo Alto Networks (PANW), filed due to shareholder demand letters alleging incomplete disclosures. CYBR denies the necessity of these additions but provides them to moot potential litigation.

Key supplemental financial metrics disclosed:

• Cash & Equivalents (6/30/25): $1,919 million
• Convertible Debt (6/30/25): $1,250 million

The filing updates the financial advisor’s analysis, adding detailed valuation multiples comparing CYBR against security peers (e