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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

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

For the fiscal year ended June 30, 2022

Commission file number: 001-15317

ResMed Inc.

(Exact name of registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation or organization)

98-0152841

(IRS Employer Identification No.)

9001 Spectrum Center Blvd.

San Diego, CA 92123

United States of America

(Address of principal executive offices, including zip code)

(858) 836-5000

(Registrant’s telephone number, including area code)

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

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

None

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

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act. Yes ¨ No x

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 x 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 x No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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. ¨

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. x

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No x

The aggregate market value of the voting and non-voting common equity held by non-affiliates of registrant as of December 31, 2021 (the last business day of the registrant’s most recently completed second fiscal quarter), computed by reference to the closing sale price of such stock on the New York Stock Exchange, was $37,771,141,000. All directors, executive officers, and 10% stockholders of registrant are considered affiliates.

At August 8, 2022, the registrant had 146,424,981 shares of Common Stock, $0.004 par value, issued and outstanding. This number excludes 41,836,234 shares held by the registrant as treasury shares.

Portions of the registrant’s definitive Proxy Statement to be delivered to stockholders in connection with the registrant’s 2022 Annual Meeting of Stockholders, to be filed subsequent to the date hereof, are incorporated by reference into Part III of this report.

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As used in this 10-K, the terms “we”, “us”, “our” and “the Company” refer to ResMed Inc., a Delaware corporation, and its subsidiaries, on a consolidated basis, unless otherwise stated.

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PART I

Cautionary Note Regarding Forward-Looking Statements

This report contains or may contain certain forward-looking statements and information that are based on the beliefs of our management as well as estimates and assumptions made by, and information currently available to, our management. All statements other than statements regarding historical facts are forward-looking statements. The words “believe,” “expect,” “intend,” “anticipate,” “will continue,” “will,” “estimate,” “plan,” “future” and other similar expressions, and negative statements of such expressions, generally identify forward-looking statements, including, in particular, statements regarding expectations of future revenue or earnings, expenses, new product development, new product launches, new markets for our products, litigation, tax outlook and the impact of COVID-19. These forward-looking statements are made in accordance with the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. You are cautioned not to place undue reliance on these forward-looking statements. Forward-looking statements reflect the views of our management at the time the statements are made and are subject to a number of risks, uncertainties, estimates and assumptions, including, without limitation, and in addition to those identified in the text surrounding such statements, those identified in Part I, Item 1A “Risk Factors” and elsewhere in this report. 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 reflected in this information. Unless otherwise expressly stated, we obtained this industry, business, market, and other data from reports, research surveys, studies, and similar data prepared by market research firms and other third parties, industry, medical and general publications, government data, and similar sources.

In addition, important factors to consider in evaluating such forward-looking statements include changes or developments in healthcare reform, social, economic, market, legal or regulatory circumstances, including the impact of public health crises such as the novel strain of coronavirus (COVID-19) and its variants that continues to spread globally; changes in our business or growth strategy or an inability to execute our strategy due to changes in our industry or the economy generally, the emergence of new or growing competitors, disruptions and delays in the supply chain, the actions or omissions of third parties, including suppliers, customers, competitors and governmental authorities, geopolitical and economic conditions in foreign jurisdictions where we do business, and various other factors. Furthermore, many of these risks and uncertainties are currently amplified by and may continue to be amplified by the COVID-19 pandemic and the impact of varying private and governmental responses that affect our customers, employees, vendors and the economies and communities where they operate. If any one or more of these risks or uncertainties materialize, or underlying estimates or assumptions prove incorrect, actual results may vary significantly from those expressed in our forward-looking statements, and there can be no assurance that the forward-looking statements contained in this report will in fact occur.