Strong Q4 Billings and Revenue Growth
Total billings grew 18% year-over-year to $2.37 billion in Q4 2025; total revenue grew 15% year-over-year to $1.91 billion.
Product Revenue Acceleration
Product revenue increased ~20% year-over-year to $691 million in Q4, with both hardware and software each growing ~20%.
Unified SASE Momentum
Unified SASE billings grew 40% in Q4; Unified SASE ARR increased 11% to $1.28 billion, and FortiSASE ARR grew over 90%.
AI and OT Growth
AI-driven security billings grew 6% in Q4 and 22% for the full year; AI-related ARR was up 21% for the year. Operational technology (OT) billings grew more than 25% in Q4.
Market Leadership and Share Gains
Fortinet remained #1 in firewall unit market share at 55% and reported the highest product revenue among segment security peers; secure networking billing grew 13%, outpacing the market.
Broad Enterprise Deal Flow and Customer Adds
Number of deals >$1M increased by over 30% in Q4 and total deal value grew by over 40%; 7,200 new organizations adopted the Unified FortiOS platform in the quarter.
Strong Profitability and Cash Generation
Q4 non-GAAP gross margin was 80.3%; operating margin was 37.3% (above guidance). Q4 free cash flow was $577 million (adjusted FCF $589 million, 31% margin).
Record Full-Year Financials and Rule of 45
Full-year 2025: billings grew 16% to $7.55 billion; revenue grew 14% to $6.8 billion; product revenue +16%; service revenue +13% to $4.58 billion. Gross margin 81.3%; operating margin 35.5% (up 50 bps); operating income $2.41 billion (+16%); EPS +16% to $2.76. Fortinet exceeded the Rule of 45 for the sixth consecutive year.
Capital Return and Balance Sheet Actions
Q4 share repurchases ~730k shares for $57 million and 4.6M shares for $356 million quarter-to-date; board approved a $1 billion increase in buyback authorization and remaining repurchase authorization is ~ $1.4 billion.
Confident 2026 Guidance
Q1 2026 guidance: billings $1.77–1.87 billion (midpoint +14%), revenue $1.70–1.76 billion (midpoint +12%), non-GAAP gross margin 80–81%, operating margin 30–32%. Full-year 2026 guidance: billings $8.4–8.6 billion (midpoint +13%), revenue $7.5–7.7 billion (midpoint +12%), service revenue $5.05–5.15 billion (midpoint +11%); reaffirmed midterm targets of billings/revenue CAGR >12% and achieving the Rule of 45.