X0303 4 2010-05-06 0000356213 PINNACLE ENTERTAINMENT INC. PNK 0001209593 GODFREY JOHN A C/O PINNACLE ENTERTAINMENT, INC. 8918 SPANISH RIDGE AVENUE LAS VEGAS NV 89148 0 1 0 0 EVP, Sec. & GC Common Stock 2010-05-06 4 M 0 61700 7.02 A 106200 D Common Stock 2010-05-06 4 S 0 61700 13.89 D 44500 D Stock Options (Right to Buy) 7.02 2010-05-06 4 M 0 61700 0 D 2012-08-13 Common Stock 61700 188300 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.85 to $13.97, 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 footnote (1) to this Form 4. The stock options vested in five equal annual installments on August 13, 2003, August 13, 2004, August 13, 2005, August 13, 2006 and August 13, 2007. /s/ Elliot D. Hoops, Attorney-In-Fact for John A. Godfrey 2010-05-10