X0303 4 2011-02-08 0 0001280452 MONOLITHIC POWER SYSTEMS INC MPWR 0001247701 MCBURNIE DOUGLAS M 6409 GUADALUPE MINES ROAD SAN JOSE CA 95120 1 0 0 0 Common Stock 2011-02-08 4 A 0 5400 0 A 5400 D According to the Company's 2004 Equity Incentive Plan and the Board Compensation Schedule as adopted by the Board on February 1, 2011, each year, on the date of the first meeting of the Board, the Company grants each non-employee director who has been on the Board for at least six months, Restricted Stock Units for Board and Committee meeting services. 100% of the restricted stock units shall vest on the first anniversary of the Vesting Commencement Date, provided the non-employee director remains a director on such date. By: Saria Tseng For: Douglas McBurnie 2011-02-10