Fortinet, Inc. — Director's Dealing 2026

Feb 3, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Fortinet, Inc. (FTNT)
CIK: 0001262039
Period of Report: 2026-02-01

Reporting Person: Ohlgart Christiane (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-01	Common Stock	M	685	—	Acquired	7409	Direct
2026-02-01	Common Stock	M	2600	—	Acquired	10009	Direct
2026-02-01	Common Stock	F	1255	$81.26	Disposed	8754	Direct
2026-02-03	Common Stock	S	507	$80.73	Disposed	8247	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-01	Restricted Stock Units	$0	M	685	Disposed		Common Stock (685)	Direct
2026-02-01	Restricted Stock Units	$0	M	2600	Disposed		Common Stock (2600)	Direct

Footnotes

F1: Vesting of restricted stock units ("RSUs") previously granted to the Reporting Person.

F2: Exempt transaction pursuant to Section 16b-3(e) - payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. All of the shares reported as disposed of in this Form 4 were relinquished by the Reporting Person and cancelled by the Issuer in exchange for the Issuer's agreement to pay federal and state tax withholding obligations of the Reporting Person resulting from the vesting of restricted stock units.

F3: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.

F4: Each RSU represents a contingent right to receive one share of the Issuer's common stock.

F5: 25% of the RSUs vested on May 1, 2025, and the remaining 75% of the RSUs will vest in equal installments on each quarterly anniversary thereafter, until such time as the RSUs are 100% vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date. Shares of the Issuer's common stock will be delivered to the Reporting Person upon settlement.

F6: RSUs do not expire; they either vest or are canceled prior to the vesting date.

F7: 25% of the RSUs will vest on May 1, 2026, and the remaining 75% of the RSUs will vest in equal installments on each quarterly anniversary thereafter, until such time as the RSUs are 100% vested, subject to the Reporting Person's provision of service to the Issuer on each vesting date. Shares of the Issuer's common stock will be delivered to the Reporting Person upon settlement.