Record revenue of $158.2 million above high-end of guidance range

Record cash from operations of $28.9 million and free cash flow of $18.1 million

Fastly, Inc. (NYSE: FSLY), a leader in global edge cloud platforms, today announced financial results for its third quarter ended September 30, 2025.

“We delivered record revenue, operating profit and free cash flow this quarter, delivering on the objective I set out for the team of accelerating growth and achieving operating leverage," said Kip Compton, CEO of Fastly. "The pace of feature roll-outs to our platform has improved dramatically over the last year and we’re winning business with some of the most sought after customers worldwide. Our Security revenue growth of 30% year-over-year is a result of this momentum combined with our strong go-to-market cross-sell execution.”

For a reconciliation of non-GAAP financial measures to their corresponding GAAP measures, please refer to the reconciliation table at the end of this press release.

Third Quarter 2025 Financial Summary

• Total revenue of $158.2 million, representing 15% year-over-year growth. Network services revenue of $118.8 million, representing 11% year-over-year growth. Security revenue of $34.0 million, representing 30% year-over-year growth. Other revenue of $5.4 million, representing 51% year-over-year growth. Network services revenue includes solutions designed to improve performance of websites, apps, APIs, and digital media. Security revenue includes products designed to protect websites, apps, APIs, and users. Other revenue includes Compute and Observability solutions.
• Generated $28.9 million of operating cash flow compared to $5.0 million of operating cash flow in the third quarter of 2024. Generated $18.1 million of positive free cash flow compared to $7.1 million of negative free cash flow in the third quarter of 2024.
• GAAP gross margin of 58.4%, compared to 54.5% in the third quarter of 2024. Non-GAAP gross margin¹ of 62.8%, compared to 58.6% in the third quarter of 2024.
• GAAP net loss of $29.5 million, compared to $38.0 million in the third quarter of 2024. Non-GAAP net income¹ of $11.1 million, compared to $3.8 million in the third quarter of 2024.
• GAAP net loss per basic and diluted share of $0.20, compared to $0.27 in the third quarter of 2024. Non-GAAP net income per basic share¹ of $0.08, compared to $0.03 in the third quarter of 2024. Non-GAAP net income per diluted share¹ of $0.07, compared to $0.03 in the third quarter of 2024.

Key Metrics

• Enterprise customer count² was 627 in the third quarter, up 51 from the third quarter of 2024.
• Fastly's top ten customers accounted for 32% of revenue in the third quarter of 2025 compared to 33% in the third quarter of 2024. Revenue from the top ten customers increased 12% year-over-year compared to revenue growth of 17% year-over-year from customers outside the top ten.
• Last 12-month net retention rate (LTM NRR)³ increased to 106% in the third quarter from 104% in the second quarter of 2025.
• Remaining Performance Obligations (RPO)⁴ were $268 million, up 16% from $231 million in the third quarter of 2024.

Third Quarter Business and Product Highlights

• Released API Discovery, which continuously identifies and organizes API traffic across edge services to enhance API security.
• Launched a new deception capability in our Next-Gen WAF designed to mislead attackers and bots, while generating higher-quality threat intelligence.
• Introduced DDoS Precise Defense, allowing rule behavior to be adjusted with a click, eliminating common concerns over unintentionally blocking legitimate traffic.
• Launched the Fastly Model Context Protocol (MCP) Server, an open-source tool enabling AI assistants to manage Fastly services.
• Introduced a Sustainability Dashboard that gives customers clear visibility into the environmental impact of their Fastly usage.
• Published Fastly’s Q2 Threat Insights Report on AI bot traffic, highlighting how AI bots are reshaping web traffic and what organizations need to do to stay in control.

Fourth Quarter and Full Year 2025 Guidance

A reconciliation of non-GAAP guidance measures to corresponding GAAP measures is not available on a forward-looking basis without unreasonable effort due to the uncertainty of expenses that may be incurred in the future and cannot be reasonably determined or predicted at this time, although it is important to note that these factors could be material to Fastly’s future GAAP financial results.

Conference Call Information

Fastly will host an investor conference call to discuss its results at 1:30 p.m. PT / 4:30 p.m. ET on Wednesday, November 5, 2025.

Please dial in at least 10 minutes prior to the 1:30 p.m. PT start time. A live webcast of the call will be available at https://investors.fastly.com where listeners may log on to the event by selecting the webcast link under the “Quarterly Results” section.

A telephone replay of the conference call will be available at approximately 5:00 p.m. PT, November 5 through November 18, 2025 by dialing 800-770-2030 or 609-800-9909 and entering the passcode 7543239.

About Fastly, Inc.

Fastly’s powerful and programmable edge cloud platform helps the world’s top brands deliver online experiences that are fast, safe, and engaging through edge compute, delivery, security, and observability offerings that improve site performance, enhance security, and empower innovation at global scale. Compared to other providers, Fastly’s powerful, high-performance, and modern platform architecture empowers developers to deliver secure websites and apps with rapid time-to-market and demonstrated, industry-leading cost savings. Organizations around the world trust Fastly to help them upgrade the internet experience, including Reddit, Neiman Marcus, Universal Music Group, and SeatGeek. Learn more about Fastly at https://www.fastly.com, and follow us @fastly.

Forward-Looking Statements

This press release contains “forward-looking” statements that are based on our beliefs and assumptions and on information currently available to us. Forward-looking statements may involve known and unknown risks, uncertainties, and other factors that may cause our actual results, performance, or achievements to be materially different from those expressed or implied by the forward-looking statements. These statements include, but are not limited to, statements regarding our future financial and operating performance and shareholder returns, including our outlook and guidance; our ability to acquire new customers, expand cross-sell opportunities, and grow market share; our ability to enrich our revenue mix with platform enhancements; the performance of our existing and new platform enhancements; the performance, capabilities, and expectations regarding customer experiences with Fastly Next-Gen WAF, Fastly API Discovery, Fastly DDoS Precise Defense, Fastly Model Context Protocol (MCP) Server, Fastly Image Optimizer, and the Sustainability Dashboard; and Fastly's strategies, platform, and business plans. Except as required by law, we assume no obligation to update these forward-looking statements publicly or to update the reasons actual results could differ materially from those anticipated in the forward-looking statements, even if new information becomes available in the future. Important factors that could cause our actual results to differ materially are detailed from time to time in the reports Fastly files with the Securities and Exchange Commission (“SEC”), including those more fully described in Fastly’s Annual Report on Form 10-K for the year ended December 31, 2024. Additional information will also be set forth in Fastly’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2025, and other filings and reports that Fastly may file from time to time with the SEC. Copies of reports filed with the SEC are posted on Fastly’s website and are available from Fastly without charge.

Use of Non-GAAP Financial Measures

To supplement our condensed consolidated financial statements, which are prepared and presented in accordance with accounting principles generally accepted in the United States (“GAAP”), the Company uses the following non-GAAP measures of financial performance: non-GAAP gross profit, non-GAAP gross margin, non-GAAP operating loss, non-GAAP net income (loss), non-GAAP basic and diluted net income (loss) per common share, non-GAAP research and development, non-GAAP sales and marketing, non-GAAP general and administrative, free cash flow and adjusted EBITDA. The presentation of this additional financial information is not intended to be considered in isolation from, as a substitute for, or superior to, the financial information prepared and presented in accordance with GAAP. These non-GAAP measures have limitations in that they do not reflect all of the amounts associated with our results of operations as determined in accordance with GAAP. In addition, these non-GAAP financial measures may be different from the non-GAAP financial measures used by other companies. These non-GAAP measures should only be used to evaluate our results of operations in conjunction with the corresponding GAAP measures. Management compensates for these limitations by reconciling these non-GAAP financial measures to the most comparable GAAP financial measures within our earnings releases.

Non-GAAP gross profit, non-GAAP gross margin, non-GAAP operating loss, non-GAAP net income (loss) and non-GAAP basic and diluted net loss per common share, non-GAAP research and development, non-GAAP sales and marketing, and non-GAAP general and administrative differ from GAAP in that they exclude stock-based compensation expense, amortization of capitalized stock-based compensation - cost of revenue, amortization of acquired intangible assets, and amortization of debt discount and issuance costs.

Adjusted EBITDA: excludes stock-based compensation expense, amortization of capitalized stock-based compensation - cost of revenue, gain on modification of lease, depreciation and other amortization expenses, amortization of acquired intangible assets, impairment expense, executive transition costs, restructuring charges, interest income, interest expense, including amortization of debt discount and issuance costs, other expense, net, and income taxes.

Amortization of Acquired Intangible Assets: consists of non-cash charges that can be affected by the timing and magnitude of asset purchases and acquisitions. Management considers its operating results without this activity when evaluating its ongoing non-GAAP performance and its adjusted EBITDA performance because these charges are non-cash expenses that can be affected by the timing and magnitude of asset purchases and acquisitions and may not be reflective of our core business, ongoing operating results, or future outlook.

Amortization of Debt Discount and Issuance Costs: consists primarily of amortization expense related to our debt obligations. Management considers its operating results without this activity when evaluating its ongoing non-GAAP net income (loss) performance and its adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results or future outlook. These are included in our total interest expense.

Capital Expenditures: consists of cash used for purchases of property and equipment, net of proceeds from sale of property and equipment, capitalized internal-use software and payments on finance lease obligations, as reflected in our statement of cash flows.

Depreciation and Other Amortization Expense: consists of non-cash charges that can be affected by the timing and magnitude of asset purchases. Management considers its operating results without this activity when evaluating its ongoing adjusted EBITDA performance because these charges are non-cash expenses that can be affected by the timing and magnitude of asset purchases and may not be reflective of our core business, ongoing operating results, or future outlook.

Executive Transition Costs: consists of one-time cash charges recognized with respect to changes in our executive’s employment status. Management considers its operating results without this activity when evaluating its ongoing non-GAAP net income (loss) performance and its adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results, or future outlook.

Free Cash Flow: calculated as net cash used in operating activities less purchases of property and equipment, net of proceeds from sale of property and equipment, principal payments of finance lease liabilities, capitalized internal-use software costs and advance payments made related to capital expenditures. Management specifically identifies adjusting items in the reconciliation of GAAP to non-GAAP financial measures. Management considers non-GAAP free cash flow to be a profitability and liquidity measure that provides useful information to management and investors about the amount of cash generated by the business that can possibly be used for investing in Fastly's business and strengthening its balance sheet, but it is not intended to represent the residual cash flow available for discretionary expenditures. The presentation of non-GAAP free cash flow is also not meant to be considered in isolation or as an alternative to cash flows from operating activities as a measure of liquidity.

Gain on Modification of Lease: consists of a one-time non-cash charge recognized with respect to the modification of our leases. Management considers its operating results without this activity when evaluating its ongoing non-GAAP net income (loss) performance and its adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results, or future outlook.

Impairment Expense: consists of charges related to our long-lived assets. Management considers its operating results without this activity when evaluating its ongoing non-GAAP net income (loss) performance and its adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results or future outlook.

Income Taxes: consists primarily of expenses recognized related to state and foreign income taxes. Management considers its operating results without this activity when evaluating its ongoing adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results or future outlook.

Interest Expense: consists primarily of interest expense related to our debt instruments, including amortization of debt discount and issuance costs. Management considers its operating results without this activity when evaluating its ongoing non-GAAP net income (loss) performance and its adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results or future outlook.

Interest Income: consists primarily of interest income related to our marketable securities. Management considers its operating results without this activity when evaluating its ongoing non-GAAP net income (loss) performance and its adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results or future outlook.

Other Expense, Net: consists primarily of foreign currency transaction gains and losses. Management considers its operating results without this activity when evaluating its ongoing adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results or future outlook.

Restructuring Charges: consists primarily of employee-related severance and termination benefits related to management's restructuring plan that resulted in a reduction in our workforce. Management considers its operating results without this activity when evaluating its ongoing non-GAAP net income (loss) performance and its adjusted EBITDA performance because it is not believed by management to be reflective of our core business, ongoing operating results or future outlook.

Stock-Based Compensation Expense: consists of expenses for stock options, restricted stock units, performance awards, restricted stock awards and Employee Stock Purchase Plan ("ESPP") under our equity incentive plans. Although stock-based compensation is an expense for the Company and is viewed as a form of compensation, management considers its operating results without this activity when evaluating its ongoing non-GAAP net income (loss) performance and its adjusted EBITDA performance, primarily because it is a non-cash expense not believed by management to be reflective of our core business, ongoing operating results, or future outlook. In addition, the value of some stock-based instruments is determined using formulas that incorporate variables, such as market volatility, that are beyond our control.

Amortization of Capitalized Stock-Based Compensation - Cost of Revenue: in order to reflect the performance of our core business, ongoing operating results, or future outlook, and to be consistent with the way many investors evaluate our performance and compare our operating results to peer companies, similar to stock-based compensation, management considers it appropriate to exclude amortization of capitalized stock-based compensation from our non-GAAP financial measures.

Management believes these non-GAAP financial measures and adjusted EBITDA serve as useful metrics for our management and investors because they enable a better understanding of the long-term performance of our core business and facilitate comparisons of our operating results over multiple periods and to those of peer companies, and when taken together with the corresponding GAAP financial measures and our reconciliations, enhance investors' overall understanding of our current financial performance.

In the financial tables below, the Company provides a reconciliation of the most comparable GAAP financial measure to the historical non-GAAP financial measures used in this press release.

Key Metrics

¹ Beginning with the quarter ended March 31, 2025, we are excluding amortization of capitalized stock-based compensation from our non-GAAP gross margin, Non-GAAP operating loss, Non-GAAP net income (loss) per common share — basic and Non-GAAP net income (loss) per common share — diluted and we have accordingly recast the presentation for all prior periods presented to reflect this change.

² Our number of customers is calculated based on the number of separate identifiable operating entities with which we have a billing relationship in good standing, from which we recognized revenue during the current quarter. Our enterprise customers are defined as those with annualized current quarter revenue in excess of $100,000. This is calculated by taking the revenue for each customer within the quarter and multiplying it by four.

³ We calculate LTM Net Retention Rate by dividing the total customer revenue for the prior twelve-month period (“prior 12-month period”) ending at the beginning of the last twelve-month period (“LTM period”) minus revenue contraction due to billing decreases or customer churn, plus revenue expansion due to billing increases during the LTM period from the same customers by the total prior 12-month period revenue. We believe the LTM Net Retention Rate is supplemental as it removes some of the volatility that is inherent in a usage-based business model.

⁴ Remaining Performance Obligations include future committed revenue for periods within current contracts with customers, as well as deferred revenue arising from consideration invoiced for which the related performance obligations have not been satisfied. During the third quarter of 2025, we identified an error in RPO calculations from certain contracts with a termination-for-convenience clause. We recast the presentation of RPO for all prior periods presented to reflect the correction of this error.

⁵ Non-GAAP Net Income per share is calculated as Non-GAAP Net Income divided by weighted average diluted shares for 2025.

⁶ Assumes weighted average diluted shares outstanding of 167.8 million in Q4 2025 and 160.4 million for the full year 2025.

Source: Fastly, Inc.

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