X0303 4 2010-03-08 1 0000082020 UNITED STATES LIME & MINERALS INC USLM 0001107072 BEALL ROBERT S 5300 MIRAMAR LANE COLLEYVILLE TX 76034 0 0 0 1 >5% Owner USLM Common Stock 2010-03-08 4 S 0 2103 40.18 D 636235 D USLM Common Stock 2010-03-09 4 S 0 1031 40.16 D 635204 D The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.15 to $40.60, inclusive. The reporting person undertakes to provide United States Lime & Minerals, Inc., any security holder of United States Lime & Minerals, Inc. and the staff of the Securities and Exchange Commission, upon request, the full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes 1 and 2 to this Form 4. The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.13 to $40.35, inclusive. M Michael Owens (POA) 2010-03-10