ARM HOLDINGS PLC /UK

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 20-F

(Mark One)

☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended March 31, 2026

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

OR

☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company report ____________________

For the transition period from ____________________ to ____________________

Commission File Number:001-41800

(Exact name of registrant as specified in its charter)

England and Wales

(Jurisdiction of incorporation or organization)

110 Fulbourn Road

Cambridge CB1 9NJ

United Kingdom

Tel:44 (1223) 400 400

(Address of principal executive offices)

Spencer Collins

110 Fulbourn Road

Cambridge CB1 9NJ

United Kingdom

Tel:44 (1223) 400 400

(Name, Telephone, E-mail and/or Facsimile number and Address of Company Contact Person)

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

• Not for trading, but only in connection with the registration of the American Depositary Shares.

Securities registered or to be registered pursuant to Section 12(g) of the Act:

None

(Title of Class)

Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act:

None

(Title of Class)

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered by the annual report.

The number of ordinary shares outstanding of Arm Holdings plc as of March 31, 2026 was 1,064,055,252.

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐No ☒

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. Yes ☐No ☒

Note — Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their obligations under those Sections.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act. (Check one):

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, 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. ☐

†The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow: Item 17 ☐ Item 18 ☐

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes☐ No ☒

GENERAL INFORMATION

All references in this Annual Report on Form 20-F (this “Annual Report”) to “Arm,” the “Company,” “we,” “us” and “our” refer to (i) Arm Limited and its consolidated subsidiaries prior to the completion of our corporate reorganization, (ii) Arm Holdings Limited and its consolidated subsidiaries after the completion of our corporate reorganization and prior to the re-registration of Arm Holdings Limited as a public limited company and (iii) Arm Holdings plc and its consolidated subsidiaries after the re-registration of Arm Holdings Limited as a public limited company.

PRESENTATION OF FINANCIAL AND OTHER INFORMATION

Our fiscal year ends on March 31 of each year. We prepare our consolidated financial statements in accordance with generally accepted accounting principles in the U.S. (“GAAP”). We present our consolidated financial statements in U.S. dollars (“USD”).

We have historically conducted our business through Arm Limited. As a result of the corporate reorganization between entities under common control, the historical consolidated financial statements of the Company were retrospectively adjusted for the change in reporting entity. Therefore, the historical consolidated financial statements of Arm Limited became the historical consolidated financial statements of Arm Holdings plc as of the date of the corporate reorganization. Our corporate reorganization is described in the section titled“Item 4. Information on the Company—A. History and Development of the Company—Corporate Reorganization.”

The financial information contained in this Annual Report does not amount to statutory accounts within the meaning of section 434(3) of the U.K. Companies Act 2006 (the “Companies Act”).

INDUSTRY AND MARKET DATA

This Annual Report contains estimates, projections and other information concerning our industry, our business and the markets for our products, including, but not limited to, our general expectations and market position, market opportunity and market size. Information that is based on estimates, forecasts, projections, market research or similar methodologies is inherently subject to uncertainties, and actual events or circumstances may differ materially from events and circumstances that are assumed in this information. Unless otherwise expressly stated, we obtained this industry, business, market and other data from our own internal estimates and research as well as from reports, research surveys, studies and similar data prepared by market research firms and other third parties, industry and general publications, government data and similar sources. While we are responsible for the accuracy of such information and believe our internal company research as to such matters is reliable and the market definitions are appropriate, neither such research nor these definitions have been verified by any independent source.

In addition, assumptions and estimates of our and our industry’s future performance are necessarily subject to a high degree of uncertainty and risk due to a variety of factors, including those described in the section titled“Item 3. Key Information—D. Risk Factors.” These and other factors could cause our future performance to differ materially from our assumptions and estimates. See“Special Note Regarding Forward-Looking Statements.”

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), relating to our operations, results of operations and other matters that are based on our current expectations, estimates, assumptions and projections. Statements regarding our future and projections relating to revenue, cost of sales, operating expenses, income (loss), and potential growth opportunities are typical of such statements. The forward-looking statements appear in a number of places, including, but not limited to, “Item 5. Operating and Financial Review and Prospects.” Forward-looking statements are based on our management’s beliefs and assumptions and on information currently available to our management. In some cases, you can identify forward-looking statements by the words “may,” “might,” “will,” “could,” “would,” “should,” “expect,” “is/are likely to,” “intend,” “plan,” “objective,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “target,” “continue” and “ongoing,” or the negative of these terms or other comparable terminology intended to identify statements about the future. The forward-looking statements and opinions are based upon current expectations and, while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements involve known and unknown risks, uncertainties and other important factors that may cause our actual results, levels of activity, performance or achievements to be materially different from the information expressed or implied by these forward looking statements. Such risks and uncertainties include, but are not limited to:

•our future financial performance, including our expectations regarding our revenues, cost of sales, gross profit, operating expenses and other operating results, as well as our ability to maintain profitability;

•our dependence on the semiconductor and electronics industries and the demand for our products and the products of our customers;

•risks related to our development of production silicon products, such as the Arm AGI CPU, compute subsystems (“CSS”), chiplets, complete chip solutions, and other more integrated compute products;

•risks related to changes in our pricing or our business terms or business model;

•our dependence on the compatibility of our products with the manufacturing and design processes of our customers;

•our reliance on third parties to market and sell chips and end products incorporating our products, as well as add value to our licensed products;

•our dependence on a limited number of customers for a significant portion of our revenue;

•our ability to attract new customers and sell additional products to our existing customers;

•the loss of any of our senior management personnel or one or more key employees or our inability to attract and retain qualified personnel;

•our ability to adequately fund our research and development efforts;

•risks related to the availability of development tools, systems software, electronic design automation (“EDA”) tools and operating systems compatible with our architecture;

•our ability to protect our proprietary products and our brand, and the costs of protecting such intellectual property (“IP”) rights, particularly as a result of litigation;

•fluctuation and unpredictability of our results;

•our ability to verify royalty amounts owed to us under our licensing agreements;

•risks related to foreign exchange fluctuations;

•changes in our effective tax rate;

•risks associated with organic growth or growth from strategic investments or acquisitions we make, and the risk of failing to effectively manage our growth;

•risks associated with the slow development of the market for our connectivity, device and data management platform;

•the possibility of cyberattacks, breaches of our security controls and unauthorized access to our data or a customer’s data;

•our ability to satisfy data protection, security, privacy or other government- and industry-specific requirements;

•risks associated with the interests of SoftBank Group Corp., our controlling shareholder (“SoftBank Group”), conflicting with the interests of other holders of our ordinary shares, nominal value £0.001 per share (“ordinary shares”), and American depositary shares, each of which represents the right to receive one ordinary share (“ADSs”), may be evidenced by American depositary receipts (“ADRs”);

•effects of global general economic conditions, political factors, war or hostility, pandemics and other events outside of our control; and

•other factors relating to our financial condition and arrangements.

We caution that you should not place undue reliance on any of our forward-looking statements. For a further discussion of these and other factors that could affect our future results, performance, or transactions, see the factors discussed in “Item 3. Key Information—D. Risk Factors” and “Item 5. Operating and Financial Review and Prospects”of this Annual Report. We undertake no obligation to update forward-looking statements to reflect developments or information obtained after the date hereof and disclaim any obligation to do so except as required by applicable laws.

PART I