FOURTH AMENDMENT TO THE LSI INDUSTRIES INC. RETIREMENT PLAN (Amended and Restated as of February 1, 2006)

EXHIBIT 10.10

FOURTH AMENDMENT TO THE

This FOURTH AMENDMENT made as of this 19 ^th day of August, 2009, by LSI Industries Inc. (hereinafter referred to as the “Corporation”).

W I T N E S S E T H:

WHEREAS, the Corporation maintains the LSI Industries Inc. Retirement Plan amended and restated as of February 1, 2006 (the “Plan”);

WHEREAS, Section 12.1 of the Plan allows the Corporation to modify or amend the Plan in whole or in part; and

WHEREAS, the Corporation desires to amend the Plan to reduce the amount of the Annual Employer Contribution from 4% to 2% for the Plan Year that begins on July 1, 2009 and ends on June 30, 2010 and for each Plan Year thereafter, unless subsequent amendments are made.

NOW, THEREFORE, the Plan is hereby amended as follows:

1. Effective for the Plan Year ending June 30, 2010 and subsequent Plan Yea