X0303 4 2010-05-18 0000356213 PINNACLE ENTERTAINMENT INC. PNK 0001242287 CAPP STEPHEN H C/O PINNACLE ENTERTAINMENT, INC. 8918 SPANISH RIDGE AVENUE LAS VEGAS NV 89148 0 1 0 0 Exec. Vice Pres. & CFO Common Stock 2010-05-18 4 M 0 8000 6.05 A 13000 D Common Stock 2010-05-18 4 S 0 8000 13.90 D 5000 D Common Stock 7110 I By 401(k) Plan Stock Options (Right to Buy) 6.05 2010-05-18 4 M 0 8000 0 D 2013-01-11 Common Stock 8000 94937 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.90 to $13.92, inclusive. The reporting person undertakes to provide to Pinnacle Entertainment, Inc., any security holder of Pinnacle Entertainment, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this footnote to this Form 4. The stock options vested in five equal annual installments on January 11, 2004, January 11, 2005, January 11, 2006, January 11, 2007 and January 11, 2008. /s/ Elliot D. Hoops, Attorney-In-Fact for Stephen H. Capp 2010-05-20