USANA HEALTH SCIENCES INC

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

(Mark One)

x Filed by the Registrant

o Filed by a Party other than the Registrant

Check the appropriate box:

USANA HEALTH SCIENCES, INC.

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

Persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays as currently valid OMB control number.

A message from

Kevin Guest, Chief Executive Officer

April 7, 2026

Dear USANA Shareholders,

We invite you to participate in the Annual Meeting of Shareholders of USANA Health Sciences, Inc. on Wednesday, May 20, 2026, at 11:00 AM, Mountain Daylight Time. We will conduct the Annual Meeting via a live webcast. There will not be an option for you to attend the Annual Meeting in person. You will be able to participate in the Annual Meeting and vote your shares electronically during the live webcast of the meeting by visiting www.virtualshareholdermeeting.com/USNA2026 and entering the 16-digit control number provided in your proxy materials.

We are pleased to provide access to our proxy materials over the Internet under the U.S. Securities and Exchange Commission’s “notice and access” rules. As a result, we are mailing to many of our shareholders a Notice of Internet Availability of Proxy Materials, instead of a paper copy of the Proxy Statement and our 2025 Annual Report. The notice contains instructions on how to access those documents over the Internet as well as how to receive a paper copy of our proxy materials. All shareholders who do not receive a notice will receive a paper copy by mail unless they have previously requested delivery of proxy materials electronically. Continuing to employ this distribution process will conserve natural resources and reduce the costs of printing and distributing our proxy materials.

You may vote your shares at the Annual Meeting, or by proxy over the Internet or by telephone, or, if you received paper copies of the proxy materials, by mail, by following the instructions on the proxy card or voting instruction card. Submitting your vote in any of these authorized ways will ensure your representation at the Annual Meeting regardless of whether you participate virtually in the Annual Meeting online over the Internet.

Please contact 1-800-586-1548 for any technical difficulties or trouble accessing the virtual meeting or if you are unable to locate your 16-digit control number.

Your vote is important to us and I do hope you will vote as soon as possible. Thank you for your continued support of USANA.

Sincerely,

Kevin Guest

Chief Executive Officer &

Chairman of the Board

NOTICE OF 2026 ANNUAL MEETING OF SHAREHOLDERS

To the Shareholders of USANA Health Sciences, Inc.:

In accordance with U.S. Securities and Exchange Commission rules, we are furnishing these proxy materials and our Annual Report on Form 10-K for fiscal year 2025 via the Internet. On April 7, 2026, we mailed to shareholders as of the record date a notice with instructions on how to access our Annual Meeting materials and vote via the Internet, by mail, or by telephone.

Any action on the items of business described above may be considered at the Annual Meeting at the time and on the date specified above or at any time and date to which the Annual Meeting may be properly adjourned or postponed.

Your vote is important to us. Whether or not you plan to participate in the Annual Meeting, we encourage you to review the accompanying proxy statement for information relating to each of the proposals and to cast your vote promptly.

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