X0609 4 2026-05-19 0001262039 Fortinet, Inc. FTNT 0001218470 GOLDMAN KENNETH A false C/O FORTINET, INC. 909 KIFER ROAD SUNNYVALE CA 94086 true false false false 0 Common Stock 2026-05-19 4 G 0 1500 0 D 19250 I By Goldman-Valeriote Family Trust u/a/d 11/15/95 Common Stock 1000 I By GV Partners L.P. Common Stock 22819 D The Reporting Person is a trustee of the Trust and may be deemed to have voting and dispositive power with regard to the shares held by the Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Trust except to the extent of his pecuniary interest therein. GV Partners L.P. is a family limited partnership of which the Reporting Person is the managing member. /s/ Robert Turner, by power of attorney 2026-05-20