Exhibit 99.1 Qualys Announces Fourth Quarter and Full Year 2025 Financial Results Q4 Revenue Growth of 10% Year-Over-Year Full Year 2025 Revenue Growth of 10% Year-Over-Year Announces $200 Million Increase to Share Repurchase Program Fourth Quarter 2025 Financial Highlights Revenues: Revenues for the fourth quarter of 2025 increased by 10$175.3 million compared to $159.2 million for the same quarter in 2024. Gross Profit: GAAP gross profit for the fourth quarter of 2025 increased by 12$146.1 milli ...