Fastly, Inc.

Disclosure in lieu of reporting on a Current Report on Form 8-K.

Amended and Restated Offer Letter of Chief Technology Officer

On November 3, 2026, the Company entered into an amended and restated employment offer letter agreement (the “Letter Agreement”) with Artur Bergman, its Chief Technology Officer. Under the Letter Agreement, Mr. Bergman's annual base salary will be $1.00 for calendar years 2027 through 2029. For each of those years, the Letter Agreement also provides for: (i) an annual target incentive opportunity of $272,500, with terms set by the Company's Board of Directors (the "Board") or its Talent and Compensation Committee (the "Committee"); (ii) an annual long-term incentive award with a grant-date value of approximately $6,250,000, subject to Board or Committee approval; and (iii) reimbursement for employment-related air travel, not to exceed $544,999.

The foregoing description of the Letter Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Letter Agreement, a copy of which is filed as Exhibit 10.2 to this Quarterly Report on Form 10-Q and is incorporated herein by reference.

Trading Arrangements

During the Company’s last fiscal quarter, the Company’s directors and officers (as defined in Rule 16a-1(f) under the Exchange Act)adopted, terminated, or modified certain contracts, instructions or written plans intended to satisfy the affirmative defense of Rule 10b5-1(c) for the purchase or sale of the Company’s securities set forth in the table below.

(1) On September 2, 2026, Richard Daniels, amember of the Company's Board of Directors, entered into a 10b5-1 Plan, providing for the potential sale of up to 13,867 shares of the Company's common stock. The plan expires on June 30, 2027, or upon the earlier completion of all authorized transactions under the plan.