Form 8-K

8-K — F5, INC.

Accession: 0001048695-26-000042

Filed: 2026-04-28

Period: 2026-04-28

CIK: 0001048695

SIC: 3576 (COMPUTER COMMUNICATIONS EQUIPMENT)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — ffiv-20260428.htm (Primary)

EX-99.1 (ex991-q226earningsreleasef.htm)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K

8-K (Primary)

Filename: ffiv-20260428.htm · Sequence: 1

ffiv-20260428

0001048695false00010486952026-04-282026-04-28

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported):

April 28, 2026

F5, Inc.

(Exact name of registrant as specified in its charter)

Washington 000-26041 91-1714307

(State or other jurisdiction (Commission (IRS Employer

of incorporation) File Number) Identification No.)

801 5th Avenue

Seattle , WA 98104

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code (206) 272-5555

Not Applicable

Former name or former address, if changed since last report

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common stock, no par value FFIV NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition

On April 28, 2026, F5, Inc. (the "Company" or "F5") issued a press release regarding its financial results for the second quarter ended March 31, 2026. The press release is attached hereto as Exhibit 99.1. The information in the press release shall not be treated as filed for purposes of the Securities Exchange Act of 1934, as amended.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits:

99.1

Press Release of F5, Inc. announcing quarterly earnings dated April 28, 2026.

104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

F5, INC.

(Registrant)

Date: April 28, 2026 By: /s/ François Locoh-Donou

François Locoh-Donou

Chairman, President, and Chief Executive Officer

EX-99.1

Filename: ex991-q226earningsreleasef.htm · Sequence: 2

Document

Q2 FY26 Earnings Release

Page 1 of 5

Contacts

Investors

Suzanne DuLong

+1 (206) 272-7049

s.dulong@f5.com

Media

Rob Gruening

+1 (206) 272-6208

r.gruening@f5.com

F5 Reports Second Quarter Results with 11% Revenue Growth

Including 22% Product Growth

SEATTLE - April 28, 2026 - F5, Inc. (NASDAQ: FFIV), the global leader in delivering and securing every app and API, today announced financial results for its second quarter fiscal year 2026 ended March 31, 2026.

“Our second quarter revenue of $812 million grew 11% year over year, driven by 22% product revenue growth—our seventh straight quarter of double-digit product growth,” said François Locoh-Donou, F5’s Chairman, President, and CEO. “Our continued strong performance reflects rising demand for F5’s solutions anchored in structural demand drivers, including growing hybrid multicloud adoption, an expanding cybersecurity threat landscape, and an inflection in AI inference. With our continued emphasis on customer-focused innovation, F5 is well positioned to help customers scale and secure the AI-powered applications of the future.”

Second Quarter Performance Summary

Second quarter fiscal year 2026 revenue totaled $812 million, representing 11% growth compared with $731 million in the second quarter of fiscal year 2025. Systems revenue of $226 million grew 26% from the year-ago period while software revenue of $184 million grew 17%. Services revenue of $401 million grew 2% from the year-ago period.

GAAP gross profit for the second quarter of fiscal year 2026 was $661 million, representing GAAP gross margin of 81.4%. This compares with GAAP gross profit of $590 million in the year-ago period, which represented GAAP gross margin of 80.7%. Non-GAAP gross profit for the second quarter of fiscal year 2026 was $680 million, representing non-GAAP gross margin of 83.7%. This compares with non-GAAP gross profit of $607 million in the year-ago period, which represented non-GAAP gross margin of 83.1%.

GAAP income from operations for the second quarter of fiscal year 2026 was $179 million, representing GAAP operating margin of 22.1%. This compares with GAAP income from operations of $159 million in the year-ago period, which represented GAAP operating margin of 21.7%. Non-GAAP income from operations for the period was $274 million, representing non-GAAP operating margin of 33.8%. This compares to non-GAAP income from operations of $233 million in the year-ago period, which represented non-GAAP operating margin of 31.9%.

GAAP net income for the second quarter of fiscal year 2026 was $148 million, or $2.58 per diluted share compared to $146 million, or $2.48 per diluted share, in the second quarter of fiscal year 2025. Non-GAAP net income for the second quarter of fiscal year 2026 was $223 million, or $3.90 per diluted share, compared to $201 million, or $3.42 per diluted share, in the second quarter of fiscal year 2025.

Q2 FY26 Earnings Release

Page 2 of 5

Performance Summary Tables

GAAP Measures Non-GAAP Measures

($ in millions except EPS) Q2 FY2026 Q2 FY2025 ($ in millions except EPS) Q2 FY2026 Q2 FY2025

Revenue $812 $731 Revenue $812 $731

Gross profit $661 $590 Gross profit $680 $607

Gross margin 81.4% 80.7% Gross margin 83.7% 83.1%

Income from operations $179 $159 Income from operations $274 $233

Operating margin 22.1% 21.7% Operating margin 33.8% 31.9%

Net income $148 $146 Net income $223 $201

EPS $2.58 $2.48 EPS $3.90 $3.42

A reconciliation of GAAP to non-GAAP measures is included with the attached financial statements. Additional information about non-GAAP financial information is included in this release.

Business Outlook

F5 raised its outlook for its fiscal year 2026, guiding for revenue growth in a range of 7% to 8%, up from 5% to 6% previously. F5 expects non-GAAP earnings per share in a range of $16.25 to $16.55, up from $15.65 to $16.05 previously.

For the third quarter of fiscal year 2026, F5 is guiding to revenue in the range of $820 million to $840 million, with non-GAAP earnings in the range of $3.91 to $4.03 per diluted share.

All forward-looking non-GAAP measures included in the Company’s business outlook exclude estimates for amortization of intangible assets, share-based compensation expenses, significant effects of tax legislation and judicial or administrative interpretation of tax regulations (including the impact of income tax reform), non-recurring income tax adjustments, valuation allowance on deferred tax assets, and the income tax effect of non-GAAP exclusions, and do not include the impact of any future acquisitions or divestitures, acquisition-related charges and write-downs, cyber incident costs, restructuring charges, facility exit costs, or other non-recurring charges that may occur in the period. F5 is unable to provide a reconciliation of non-GAAP earnings guidance measures to corresponding U.S. generally accepted accounting principles or GAAP measures on a forward-looking basis without unreasonable effort due to the overall high variability and low visibility of most of the foregoing items that have been excluded. Material changes to any one of these items could have a significant effect on our guidance and future GAAP results. Certain exclusions, such as amortization of intangible assets and share-based compensation expenses, are generally incurred each quarter, but the amounts have historically varied and may continue to vary significantly from quarter to quarter.

Live Webcast and Conference Call

F5 will host a live webcast to review its financial results and outlook today, April 28, 2026, at 4:30 pm ET. Open to the public, the live webcast, supplemental financial information, and earnings slides are accessible from the investor relations page of F5.com. To participate in the live call via telephone in the U.S., dial +1 (888) 596-4144; from Canada, dial +1 (647) 495-7514; from outside the U.S. and Canada, dial +1 (646) 968-2525, and reference conference ID 6076834. Please call at least five minutes prior to the call start time. The webcast replay will be archived on the investor relations portion of F5’s website.

Q2 FY26 Earnings Release

Page 3 of 5

Forward Looking Statements

This press release contains forward-looking statements including, among other things, that F5’s continued strong performance reflects rising demand for F5’s solutions anchored in durable structural demand drivers, including hybrid multicloud adoption, an expanding cybersecurity threat landscape, and rapid enterprise AI adoption, that F5’s continued focus on customer-focused innovation positions F5 well to help customers scale and secure the AI-powered applications of the future, the Company’s future financial performance including revenue growth, earnings growth, future customer demand, and the performance and benefits of the Company's products. These, and other statements that are not historical facts, are forward-looking statements. These forward-looking statements are subject to the safe harbor provisions created by the Private Securities Litigation Reform Act of 1995. Actual results could differ materially from those projected in the forward-looking statements as a result of certain risk factors. Such forward-looking statements involve risks and uncertainties, as well as assumptions and other factors that, if they do not fully materialize or prove correct, could cause the actual results, performance or achievements of the Company, or industry results, to be materially different from any future results, performance or achievements expressed or implied by such forward-looking statements. Such factors include, but are not limited to: customer acceptance of offerings; disruptions to the global supply chain resulting in inability to source required parts for F5’s products or the ability to only do so at greatly increased prices thereby impacting our revenues and/or margins; global economic conditions and uncertainties in the geopolitical environment; overall information technology spending; F5’s ability to successfully integrate acquired businesses’ products with F5 technologies; the ability of F5’s sales professionals and distribution partners to sell new solutions and service offerings; the timely development, introduction and acceptance of additional new products and features by F5 or its competitors; competitive factors, including but not limited to pricing pressures, industry consolidation, entry of new competitors into F5’s markets, and new product and marketing initiatives by our competitors; increased sales discounts; the business impact of the acquisitions and potential adverse reactions or changes to business or employee relationships, including those resulting from the announcement of completion of acquisitions; uncertain global economic conditions which may result in reduced customer demand for our products and services and changes in customer payment patterns; litigation involving patents, intellectual property, shareholder and other matters, and governmental investigations; potential security flaws in the Company’s networks, products or services; cybersecurity attacks on its networks, products or services; natural catastrophic events; a pandemic or epidemic; F5’s ability to sustain, develop and effectively utilize distribution relationships; F5’s ability to attract, train and retain qualified product development, marketing, sales, professional services and customer support personnel; F5’s ability to expand in international markets; the unpredictability of F5’s sales cycle; the ability of F5 to execute on its share repurchase program including the timing of any repurchases; future prices of F5’s common stock; and other risks and uncertainties described more fully in our documents filed with or furnished to the Securities and Exchange Commission, including our most recent reports on Form 10-K and Form 10-Q and current reports on Form 8-K and other documents that we may file or furnish from time to time, which could cause actual results to vary from expectations. The financial information contained in this release should be read in conjunction with the consolidated financial statements and notes thereto included in F5’s most recent reports on Forms 10-Q and 10-K as each may be amended from time to time. All forward-looking statements in this press release are based on information available as of the date hereof and qualified in their entirety by this cautionary statement. F5 assumes no obligation to revise or update these forward-looking statements.

GAAP to non-GAAP Reconciliation

F5’s management evaluates and makes operating decisions using various operating measures. These measures are generally based on the revenues of its products, services operations, and certain costs of those operations, such as cost of revenues, research and development, sales and marketing and general and administrative expenses. One such measure is GAAP net income excluding, as applicable, stock-based compensation, amortization and impairment of purchased intangible assets, facility-exit costs, acquisition-related charges, net of taxes, cyber incident costs, restructuring charges, and certain non-recurring tax expenses and benefits, which is a non-GAAP financial measure under Section 101 of Regulation G under the Securities Exchange Act of 1934, as amended. This measure of non-GAAP net income is adjusted by the

Q2 FY26 Earnings Release

Page 4 of 5

amount of additional taxes or tax benefit that the Company would accrue if it used non-GAAP results instead of GAAP results to calculate the Company’s tax liability.

The non-GAAP adjustments, and F5's basis for excluding them from non-GAAP financial measures, are outlined below:

Stock-based compensation. Stock-based compensation consists of expense for stock options, restricted stock, and employee stock purchases through the Company’s Employee Stock Purchase Plan. Although stock-based compensation is an important aspect of the compensation of F5’s employees and executives, management believes it is useful to exclude stock-based compensation expenses to better understand the long-term performance of the Company’s core business and to facilitate comparison of the Company’s results to those of peer companies.

Amortization and impairment of purchased intangible assets. Purchased intangible assets are amortized over their estimated useful lives and generally cannot be changed or influenced by management after the acquisition. On a non-recurring basis, when certain events or circumstances are present, management may also be required to write down the carrying value of its purchased intangible assets and recognize impairment charges. Management does not believe these charges accurately reflect the performance of the Company’s ongoing operations; therefore, they are not considered by management in making operating decisions. However, investors should note that the use of intangible assets contributed to F5’s revenues earned during the periods presented and will contribute to F5’s future period revenues as well.

Facility-exit costs. F5 has incurred certain non-recurring right-of-use asset impairment charges, and other related recurring costs in connection with the exit of its leased facilities. These charges are not representative of the ongoing activity or costs to the business. As a result, these charges are being excluded to provide investors with a more comparable measure of costs associated with ongoing operations.

Acquisition-related charges, net. F5 does not acquire businesses on a predictable cycle, and the terms and scope of each transaction can vary significantly and are unique to each transaction. F5 excludes acquisition-related charges from its non-GAAP financial measures to provide a useful comparison of the Company’s operating results to prior periods and to its peer companies. Acquisition-related charges consist of planning, execution and integration costs incurred directly as a result of an acquisition.

Cyber incident costs. F5 has incurred certain non-recurring expenses in connection with the investigation and remediation of the Cyber Incident. Management believes it is useful to exclude these expenses as they are not representative of our ongoing operations and to facilitate comparison of the Company’s historical results and to those of peer companies.

Restructuring charges. F5 has incurred restructuring charges that are included in its GAAP financial statements, primarily related to workforce reductions and costs associated with exiting facility-lease commitments. F5 excludes these items from its non-GAAP financial measures when evaluating its continuing business performance as such items vary significantly based on the magnitude of the restructuring action and do not reflect expected future operating expenses. In addition, these charges do not necessarily provide meaningful insight into the fundamentals of current or past operations of its business.

Management believes that non-GAAP net income per share provides useful supplemental information to management and investors regarding the performance of the Company’s core business operations and facilitates comparisons to the Company’s historical operating results. Although F5’s management finds this non-GAAP measure to be useful in evaluating the performance of the core business, management’s reliance on this measure is limited because items excluded from such measures could have a material effect on F5’s earnings and earnings per share calculated in accordance with GAAP. Therefore, F5’s management will use its non-GAAP earnings and earnings per share measures, in conjunction with GAAP earnings and earnings per share measures, to address these limitations when evaluating the performance of the Company’s core business. Investors should consider these non-GAAP measures in addition to, and not as a substitute for, financial performance measures in accordance with GAAP.

Q2 FY26 Earnings Release

Page 5 of 5

F5 believes that presenting its non-GAAP measures of earnings and earnings per share provides investors with an additional tool for evaluating the performance of the Company’s core business and is used by management in its own evaluation of the Company’s performance. Investors are encouraged to look at GAAP results as the best measure of financial performance. However, while the GAAP results are more complete, the Company provides investors these supplemental measures since, with reconciliation to GAAP, it may provide additional insight into the Company’s operational performance and financial results.

For reconciliation of these non-GAAP financial measures to the most directly comparable GAAP financial measures, please see the section in our attached Condensed Consolidated Income Statements entitled “Non-GAAP Financial Measures.”

About F5

F5, Inc. (NASDAQ: FFIV) is the global leader that delivers and secures every app. Backed by three decades of expertise, F5 has built the industry’s premier platform—F5 Application Delivery and Security Platform (ADSP)—to deliver and secure every app, every API, anywhere: on-premises, in the cloud, at the edge, and across hybrid, multicloud environments. F5 is committed to innovating and partnering with the world’s largest and most advanced organizations to deliver fast, available, and secure digital experiences. Together, we help each other thrive and bring a better digital world to life.

For more information visit f5.com

Explore F5 Labs threat research at f5.com/labs

F5 is a trademark, service mark, or tradename of F5, Inc., in the U.S. and other countries.

SOURCE: F5, Inc.

F5, Inc.

Consolidated Balance Sheets

(unaudited, in thousands)

March 31, September 30,

2026 2025

ASSETS

Current assets

Cash and cash equivalents $ 1,442,811 $ 1,344,273

Accounts receivable, net of allowances of $3,173 and $2,877 425,640 414,433

Inventories 90,297 77,229

Other current assets 743,754 682,766

Total current assets 2,702,502 2,518,701

Property and equipment, net 175,356 156,947

Operating lease right-of-use assets 184,461 185,601

Long-term investments 20,814 15,693

Deferred tax assets 467,457 446,388

Goodwill 2,443,605 2,443,882

Other assets, net 503,277 552,280

Total assets $ 6,497,472 $ 6,319,492

LIABILITIES AND SHAREHOLDERS’ EQUITY

Current liabilities

Accounts payable $ 79,521 $ 83,972

Accrued liabilities 329,068 315,383

Deferred revenue 1,268,570 1,213,226

Total current liabilities 1,677,159 1,612,581

Deferred tax liabilities 1,926 1,921

Deferred revenue, long-term 849,740 786,011

Operating lease liabilities, long-term 226,579 230,749

Other long-term liabilities 92,493 96,231

Total long-term liabilities 1,170,738 1,114,912

Commitments and contingencies

Shareholders’ equity

Preferred stock, no par value; 10,000 shares authorized, no shares issued and outstanding — —

Common stock, no par value; 200,000 shares authorized, 56,753 and 57,684 shares issued and outstanding 52,585 42,023

Accumulated other comprehensive loss (19,035) (18,324)

Retained earnings 3,616,025 3,568,300

Total shareholders’ equity 3,649,575 3,591,999

Total liabilities and shareholders’ equity $ 6,497,472 $ 6,319,492

F5, Inc.

Consolidated Income Statements

(unaudited, in thousands, except per share amounts)

Three Months Ended Six Months Ended

March 31, March 31,

2026 2025 2026 2025

Net revenues

Products $ 410,515 $ 337,196 $ 820,798 $ 705,693

Services 401,185 393,927 813,367 791,919

Total 811,700 731,123 1,634,165 1,497,612

Cost of net revenues

Products 90,890 81,287 183,161 164,123

Services 60,010 59,672 119,524 117,346

Total 150,900 140,959 302,685 281,469

Gross profit 660,800 590,164 1,331,480 1,216,143

Operating expenses

Sales and marketing 239,411 218,061 464,188 424,096

Research and development 151,039 136,561 292,200 267,079

General and administrative 91,647 76,645 182,245 149,668

Restructuring charges (315) — (358) 11,321

Total 481,782 431,267 938,275 852,164

Income from operations 179,018 158,897 393,205 363,979

Other income, net 10,199 12,303 18,934 16,265

Income before income taxes 189,217 171,200 412,139 380,244

Provision for income taxes 41,462 25,670 84,330 68,269

Net income $ 147,755 $ 145,530 $ 327,809 $ 311,975

Net income per share — basic $ 2.61 $ 2.51 $ 5.73 $ 5.37

Weighted average shares — basic 56,708 57,886 57,184 58,098

Net income per share — diluted $ 2.58 $ 2.48 $ 5.68 $ 5.30

Weighted average shares — diluted 57,298 58,764 57,736 58,913

F5, Inc.

Consolidated Statements of Cash Flows

(unaudited, in thousands)

Six Months Ended

March 31,

2026 2025

Operating activities

Net income $ 327,809 $ 311,975

Adjustments to reconcile net income to net cash provided by operating activities:

Stock-based compensation 128,001 116,792

Depreciation and amortization 49,185 45,137

Non-cash operating lease costs 14,959 15,792

Deferred income taxes (20,582) (39,212)

Other (3,488) 3,746

Changes in operating assets and liabilities (excluding effects of the acquisition of businesses):

Accounts receivable (11,751) 7,275

Inventories (13,068) 8,498

Other current assets (59,744) (53,457)

Other assets 21,379 (28,434)

Accounts payable and accrued liabilities (10,142) (33,844)

Deferred revenue 119,073 124,640

Lease liabilities (16,503) (19,529)

Net cash provided by operating activities 525,128 459,379

Investing activities

Purchases of investments (2,910) (1,900)

Maturities of investments 402 —

Sales of investments 1,343 —

Acquisition of businesses, net of cash acquired — (10,100)

Purchases of property and equipment (28,066) (18,576)

Net cash used in investing activities (29,231) (30,576)

Financing activities

Proceeds from the exercise of stock options and purchases of stock under employee stock purchase plan 22,940 23,871

Payments for repurchase of common stock, including excise taxes (401,102) (252,068)

Taxes paid related to net share settlement of equity awards (18,118) (16,083)

Net cash used in financing activities (396,280) (244,280)

Net increase in cash, cash equivalents and restricted cash 99,617 184,523

Effect of exchange rate changes on cash, cash equivalents and restricted cash (1,031) (1,606)

Cash, cash equivalents and restricted cash, beginning of period 1,346,368 1,078,340

Cash, cash equivalents and restricted cash, end of period $ 1,444,954 $ 1,261,257

Supplemental disclosures of cash flow information

Cash paid for amounts included in the measurement of operating lease liabilities $ 20,432 $ 22,828

Supplemental disclosures of non-cash activities

Right-of-use assets obtained in exchange for lease obligations $ 14,619 $ 36,893

F5, Inc.

GAAP to Non-GAAP Reconciliation

(unaudited, in thousands, except percentages and per share amounts)

Three Months Ended Six Months Ended

March 31, March 31,

2026 2025 2026 2025

Net revenues $ 811,700 $ 731,123 $ 1,634,165 $ 1,497,612

Gross profit and gross margin:

GAAP gross profit and gross margin $ 660,800 81.4 % $ 590,164 80.7 % $ 1,331,480 81.5 % $ 1,216,143 81.2 %

Adjustments to gross profit and gross margin:

Stock-based compensation $ 7,473 0.9 % $ 7,393 1.0 % $ 14,299 0.9 % $ 14,793 1.0 %

Amortization and impairment of purchased intangible assets 10,640 1.3 % 9,283 1.3 % 21,280 1.3 % 18,567 1.2 %

Facility-exit costs 90 0.0 % 437 0.1 % 182 0.0 % 561 0.0 %

Cyber incident costs 770 0.1 % — — 1,646 0.1 % — —

Non-GAAP gross profit and gross margin $ 679,773 83.7 % $ 607,277 83.1 % $ 1,368,887 83.8 % $ 1,250,064 83.5 %

Income from operations and operating margin:

GAAP income from operations and operating margin $ 179,018 22.1 % $ 158,897 21.7 % $ 393,205 24.1 % $ 363,979 24.3 %

Adjustments to income from operations and operating margin:

Stock-based compensation $ 67,996 8.4 % $ 58,884 8.1 % $ 128,001 7.8 % $ 116,792 7.8 %

Amortization and impairment of purchased intangible assets 11,452 1.4 % 10,095 1.4 % 22,904 1.4 % 20,238 1.4 %

Facility-exit costs 922 0.1 % 4,264 0.6 % 1,853 0.1 % 5,484 0.4 %

Acquisition-related charges 9,021 1.1 % 1,214 0.2 % 18,838 1.2 % 1,905 0.1 %

Cyber incident costs 6,037 0.7 % — — 23,525 1.4 % — —

Restructuring charges (315) 0.0 % — — (358) 0.0 % 11,321 0.8 %

Non-GAAP income from operations and operating margin $ 274,131 33.8 % $ 233,354 31.9 % $ 587,968 36.0 % $ 519,719 34.7 %

Net income:

GAAP net income $ 147,755 $ 145,530 $ 327,809 $ 311,975

Adjustments to net income:

Stock-based compensation $ 67,996 $ 58,884 $ 128,001 $ 116,792

Amortization and impairment of purchased intangible assets 11,452 10,095 22,904 20,238

Facility-exit costs 922 4,264 1,853 5,484

Acquisition-related charges 9,021 1,214 18,838 1,905

Cyber incident costs 6,037 — 23,525 —

Restructuring charges (315) — (358) 11,321

Tax effects related to above items (19,672) (18,893) (40,613) (39,649)

Non-GAAP net income $ 223,196 $ 201,094 $ 481,959 $ 428,066

Net income per share - diluted:

GAAP net income per share — diluted $ 2.58 $ 2.48 $ 5.68 $ 5.30

Adjustments to GAAP net income per share — diluted

Stock-based compensation $ 1.19 $ 1.00 $ 2.22 $ 1.98

Amortization and impairment of purchased intangible assets 0.20 0.17 0.40 0.34

Facility-exit costs 0.02 0.07 0.03 0.09

Acquisition-related charges 0.16 0.02 0.33 0.03

Cyber incident costs 0.11 — 0.41 —

Restructuring charges (0.01) — (0.01) 0.19

Tax effects related to above items (0.34) (0.32) (0.70) (0.67)

Non-GAAP net income per share — diluted $ 3.90 $ 3.42 $ 8.35 $ 7.27

Weighted average shares — diluted 57,298 58,764 57,736 58,913

Note: Numbers and percentages are rounded for presentation purposes and may not foot.

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 7

v3.26.1

Cover Page Document

Apr. 28, 2026

Cover [Abstract]

Document Type

8-K

Document Period End Date

Apr. 28, 2026

Entity Registrant Name

F5, Inc.

Entity Incorporation, State or Country Code

Entity File Number

000-26041

Entity Tax Identification Number

91-1714307

Entity Central Index Key

0001048695

Entity Address, Address Line One

801 5th Avenue

Entity Address, City or Town

Seattle

Entity Address, State or Province

Entity Address, Postal Zip Code

98104

City Area Code

206

Local Phone Number

272-5555

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Title of 12(b) Security

Common stock, no par value

Trading Symbol

FFIV

Security Exchange Name

NASDAQ

Entity Emerging Growth Company

false

Amendment Flag

false

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Cover page.

+ References

No definition available.

+ Details

Name:

dei_CoverAbstract

Namespace Prefix:

dei_

Data Type:

xbrli:stringItemType

Balance Type:

Period Type:

duration

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

Period Type:

duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

Period Type:

duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

Period Type:

duration

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

Period Type:

duration

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

Period Type:

duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

Period Type:

duration

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

Period Type:

duration

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration