X0306 4 2020-09-30 0 0001262039 Fortinet, Inc. FTNT 0001567713 NEUKOM WILLIAM H. C/O FORTINET, INC. 899 KIFER ROAD SUNNYVALE CA 94086 1 0 0 0 Common Stock 2020-09-30 4 M 0 448 0.00 A 54077 D Restricted Stock Units 0.00 2020-09-30 4 M 0 448 0.00 D Common Stock 448 1344 D Vesting of restricted stock units ("RSUs") granted to the Reporting Person on August 20, 2020. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest in substantially equal increments on each of September 30, 2020, December 31, 2020, March 31, 2021, and the earlier of (i) June 30, 2021 and (ii) the date immediately preceding the Issuer's 2021 annual meeting of shareholders, subject to the Reporting Person's provision of services to the Issuer on each vesting date. Shares of the Issuer's Common Stock will be delivered to the Reporting Person following vesting. RSUs do not expire; they either vest or are canceled prior to vest date. /s/ Robert Turner, by power of attorney 2020-10-01