X0303 4 2011-05-19 0 0000880115 CLAYTON WILLIAMS ENERGY INC /DE CWEI 0001237243 POLLARD MICHAEL L 6 DESTA DRIVE, SUITE 6500 MIDLAND TX 79705 0 1 0 0 Senior Vice President & CFO Common Stock, $.10 par value 2011-05-19 4 I 0 984 72.18 A 4232 I See These shares are held in the Company's 401(k) Plan (the "Plan"). On May 19, 2011, Mr. Pollard acquired 984 shares of Common Stock through the voluntary transfer of investment funds within the Plan. All other shares held by Mr. Pollard in the Plan were acquired through matching contributions made by the Company, of which 70 shares were acquired subsequent to the date of the previous Form 4 filed by Mr. Pollard on January 25, 2011. /s/ Michael L. Pollard 2011-05-20