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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INFUSYSTEM HOLDINGS, INC.

(Name of Registrant as Specified in Its Charter)

MESON CAPITAL PARTNERS LLC

MESON CAPITAL LP

RYAN J. MORRIS

ETHAN E. DOYLE

MOHAMED ALKADY

DANIEL A. BALDA

BRYAN BOCHES

RICHARD LINDER

ASHA SAXENA

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

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Meson Capital Partners LLC, together with the other participants named herein (collectively, “Meson”), has filed a definitive proxy statement and accompanying BLUE proxy card with the Securities and Exchange Commission to be used to solicit votes for the election of its slate of director nominees at the 2018 annual meeting of stockholders of InfuSystem Holdings, Inc., a Delaware corporation (the “Company”).

On July 5, 2018, Meson issued an Investor Presentation, which is attached as Exhibit 1. The Investor Presentation was also posted by Meson to www.UnlockINFU.com.