UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

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

(Amendment No. )

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Filed by a Party other than the Registrant ☒

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☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Under § 240.14a-12

LIFEVANTAGE CORPORATION

(Name of Registrant as Specified In Its Charter)

THE RADOFF FAMILY FOUNDATION

BRADLEY L. RADOFF

SUDBURY CAPITAL FUND, LP

SUDBURY CAPITAL GP, LP

SUDBURY HOLDINGS, LLC

SUDBURY CAPITAL MANAGEMENT, LLC

DAYTON JUDD

MICHAEL LOHNER

(Name of Persons(s) Filing Proxy Statement, if other than the Registrant)

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Bradley L. Radoff, Sudbury Capital Fund, LP and the other participants named herein (collectively, the “Radoff-Sudbury Group”), have filed a definitive proxy statement and accompanying BLUE universal proxy card with the Securities and Exchange Commission to be used to solicit votes for the election of the Radoff-Sudbury Group’s highly-qualified director nominees at the fiscal year 2024 annual meeting of stockholders of LifeVantage Corporation, a Delaware corporation (the “Company”).

On October 12, 2023, the Radoff-Sudbury Group issued an Investor Presentation titled “The Case for Boardroom Change at LifeVantage”, a copy of which is attached hereto as Exhibit 1 and incorporated herein by reference.