X0306 4 2020-06-18 0 0001262039 Fortinet, Inc. FTNT 0001804992 Ducourty Kelly C/O FORTINET, INC. 899 KIFER ROAD SUNNYVALE CA 94086 1 0 0 0 Common Stock 2020-06-18 4 M 0 421 0.00 A 421 D Restricted Stock Units 0.00 2020-06-18 4 M 0 421 0.00 D Common Stock 421 0 D Vesting of restricted stock units ("RSUs") granted to the Reporting Person on May 20, 2020. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest as to 100% of the underlying shares on the earlier of (i) June 30, 2020 and (ii) the date immediately preceding the Issuer's 2020 annual meeting of shareholders, subject to the Reporting Person's provision of services to the Issuer on such vesting date. Shares of the Issuer's Common Stock will be delivered to the Reporting Person following vesting. /s/ Robert Turner, by power of attorney 2020-06-19