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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended April 3, 2026

or

Commission File Number 1-3863

L3HARRIS TECHNOLOGIES, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (321) 727-9100

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. þ Yes o 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 during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). þ Yes o 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 is a shell company (as defined in Rule 12b-2 of the Exchange Act). ☐ Yes þ No

The number of shares outstanding of the registrant’s common stock as of April 24, 2026 was 186,294,951.

L3HARRIS TECHNOLOGIES, INC.

FORM 10-Q

For First Quarter 2026

TABLE OF CONTENTS

This Quarterly Report on Form 10-Q (this “Report”) contains trademarks, service marks and registered marks of L3Harris Technologies, Inc. and its subsidiaries. All other trademarks are the property of their respective owners.

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Cautionary Statement Regarding Forward-Looking Statements

This Report contains forward-looking statements within the meaning of federal securities laws that involve risks, uncertainties and assumptions that could cause our results to differ materially from such forward-looking statements. Examples include, but are not limited to, statements concerning: our plans, strategies and objectives for future operations; new products, systems, technologies, services or developments; future economic conditions, performance or outlook, including expectations regarding trade policies; future political or budget conditions; the outcome of contingencies or litigation; expected contractual backlog recognition; effective tax rate forecast; the potential level of share repurchases, dividends or pension contributions; capital expenditures and capital structure; other financial items; and assumptions underlying any of the foregoing. Terminology, such as “believes,” “expects,” “may,” “could,” “should,” “would,” “will,” “intends,” “plans,” “estimates,” “anticipates,” “projects” and similar words or expressions may also identify forward-looking statements.

You should not place undue reliance on forward-looking statements, which reflect our management’s current expectations, estimates, projections and assumptions and information currently available to our management as of the date of filing of this Report and are not guarantees of future performance or actual results. Important risks that could cause our results to differ materially from those expressed in or implied by these forward-looking statements or from our historical results include, but are not limited to, risks arising from: competitive markets; U.S. Government spending priorities; changes in contract mix; unilateral contract action by the U.S. Government or unexpected issues related to the Department of War (“DoW”) investment in our subsidiary; uncertain economic conditions; future geo-political events; supply chain disruptions; indebtedness; interest rates and other market factors; and changes in effective tax rate or additional tax exposures. These important risks and other disclosures are described more fully in Part I. Item 1A. Risk Factors in our Fiscal 2025 Form 10-K and in Part II. Item 1A. Risk Factors of this Report.

Forward-looking statements are made in reliance on the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. All subsequent written and oral forward-looking statements attributable to us or any person acting on our behalf are qualified by the cautionary statements in this section, and we have no duty and disclaim any intention or obligation, other than imposed by law, to update or revise any forward-looking statements, whether as a result of new information, future events or developments or otherwise, after the date of filing of this Report or, in the case of any document incorporated by reference, the date of that document.

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PART I. FINANCIAL INFORMATION