X0508 4 2026-01-16 0001262039 Fortinet, Inc. FTNT 0001475586 Xie Michael C/O FORTINET, INC. 909 KIFER ROAD SUNNYVALE CA 94086 true true false false VP, ENGINEERING & CTO 0 Performance Stock Units 0 2026-01-16 4 A 0 28823 0 A Common Stock 28823 28823 D Represents performance stock units ("PSUs") earned as a result of the achievement of performance criteria pursuant to performance-based PSU awards with a performance period that ended on December 31, 2025, as certified by the HR Committee of the Issuer's Board of Directors on January 16, 2026. Each PSU represents a contingent right to receive one share of the Issuer's common stock. 100% of the PSUs vest and settle on February 1, 2026, subject to the Reporting Person's provision of service to the Issuer on such date. Shares of the Issuer's common stock will be delivered to the Reporting Person upon settlement. PSUs do not expire; they either vest or are canceled prior to the vesting date. /s/ Robert Turner, by power of attorney 2026-01-20