X0306 4 2020-11-10 0 0000082020 UNITED STATES LIME & MINERALS INC USLM 0001204973 BYRNE TIMOTHY W 5429 LBJ FREEWAY SUITE 230 DALLAS TX 75240 1 1 0 0 President & CEO USLM common stock 2020-11-10 4 M 0 7500 72.86 A 44278 D USLM common stock 2020-11-10 4 M 0 7500 71 A 51778 D USLM common stock 2020-11-10 4 F 0 5031 108.61 D 46747 D USLM common stock 2020-11-10 4 F 0 4902 108.61 D 41845 D USLM common stock 2020-11-11 4 D 0 1331 105.14 D 40514 D USLM common stock 2020-11-11 4 D 0 669 104 D 39845 D USLM common stock 2020-11-12 4 D 0 100 105 D 39745 D USLM common stock 2020-11-12 4 D 0 100 100 D 39645 D USLM common stock 2020-11-12 4 G 0 400 98.25 D 39245 D Stock Option (right to buy) 72.86 2020-11-10 4 M 0 7500 72.86 D 2014-12-31 2024-12-31 USLM common stock 7500 0 D Stock Option (right to buy) 71 2020-11-10 4 M 0 7500 71 D 2018-12-31 2028-12-31 USLM common stock 7500 0 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $105.00 to $105.78, inclusive. The reporting person undertakes to provide United States Lime & Minerals, Inc., any security holder of United States Lime & Minerals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in footnotes 1 and 2 in 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 $104.00 to $104.15, inclusive. Per share closing price on November 12, 2020. Michael L. Wiedemer 2020-11-12