X0202 4 2004-11-26 0000079716 POTLATCH CORP PCH 0001219746 SEAMANS HARRY D 601 W. RIVERSIDE AVENUE, SUITE 1100 SPOKANE WA 99201 0 1 0 0 Vice President Common Stock 2004-11-26 4 M 0 3464 45.9619 A 3464 D Common Stock 2004-11-26 4 S 0 3464 49.30 D 0 D Common Stock 2004-11-29 4 M 0 3464 35.9599 A 3464 D Common Stock 2004-11-29 4 S 0 3464 50.2716 D 0 D Common Stock 2004-11-29 4 M 0 3464 39.413 A 3464 D Common Stock 2004-11-29 4 S 0 3464 50.2716 D 0 D Common Stock 2004-11-29 4 M 0 3254 30.5421 A 3254 D Common Stock 2004-11-29 4 S 0 3254 50.2716 D 0 D Common Stock 2004-11-29 4 M 0 3464 27.32 A 3464 D Common Stock 2004-11-29 4 S 0 3464 50.2716 D 0 D Employee Stock Option (right to buy) 45.9619 2004-11-26 4 M 0 2414 0 A 1999-12-04 2007-12-04 Common Stock 2414 0 D Employee Stock Option (right to buy) 35.9599 2004-11-29 4 M 0 3464 0 A 2000-12-03 2008-12-03 Common Stock 3464 0 D Employee Stock Option (right to buy) 39.413 2004-11-29 4 M 0 3464 0 A 2001-12-02 2009-12-02 Common Stock 3464 0 D Employee Stock Option (right to buy) 30.5421 2004-11-29 4 M 0 3254 0 A 2002-12-07 2010-12-07 Common Stock 3254 0 D Employee Stock Option (right to buy) 27.32 2004-11-29 4 M 0 3464 0 A 2003-12-06 2011-12-06 Common Stock 3464 0 D The reporting person was granted employee stock options on December 4, 1997, to vest in two equal annual installments. The grant was made under the stockholder-approved Potlatch Corporation 1995 Stock Incentive Plan. All these options have vested. The employee stock option, after exercise, was sold at $49.30 per share. The reporting person was granted employee stock options on December 3, 1998, to vest in two equal annual installments. The grant was made under the stockholder-approved Potlatch Corporation 1995 Stock Incentive Plan. All these options have vested. The employee stock option, after exercise, was sold at $50.2716 per share. The reporting person was granted employee stock options on December 2, 1999, to vest in two equal annual installments. The grant was made under the stockholder-approved Potlatch Corporation 1995 Stock Incentive Plan. All these options have vested. The reporting person was granted employee stock options on December 7, 2000, to vest in two equal annual installments. The grant was made under the stockholder-approved Potlatch Corporation 2000 Stock Incentive Plan. All these options have vested. The reporting person was granted employee stock options on December 6, 2001, to vest in two equal annual installments. The grant was made under the stockholder-approved Potlatch Corporation 2000 Stock Incentive Plan. All these options have vested. Malcolm A. Ryerse, Attorney-in-fact 2004-11-30