THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Weyerhaeuser Company (WY)

3/10/2006 Proxy Information

Edward P. Rogel, Senior Vice President, Human Resources, an executive officer of the Company, is the first cousin of Steven R. Rogel, Chairman of the Board of Directors, President and Chief Executive Officer.

3/3/2005 Proxy Information

Edward P. Rogel, Senior Vice President, Human Resources, an executive officer of the Company, is the first cousin of Steven R. Rogel, Chairman of the Board of Directors, President and Chief Executive Officer.

In November 2003, Marvin D. Cooper, Senior Vice President, Pulp, Paper, Containerboard Manufacturing and Engineering purchased from the Company, for $380,200 in cash, 186 acres of timberland located in Marlboro County, South Carolina. The terms of the sale were negotiated on an armÕs-length basis.

John Kieckhefer, a Director of the Company, and members of his immediate family have beneficial ownership or voting power for various Kieckhefer entities that collectively own 9.5% of the outstanding voting shares (9.3% on a fully diluted basis) of iRise, a California corporation. The Kieckhefer entities own 10.98% of the common shares outstanding and 6.33% of the special preferred shares outstanding, which vote together and not as separate classes except as required by law and in certain specified circumstances. During 2004, iRise signed a contract with the Company for the license of computer software, software maintenance and related professional services pursuant to which the Company paid iRise approximately $100,000 in fees and taxes. Amounts paid by the Company to iRise represented less than 1% of iRiseÕs total revenues for 2004. The interest of the Kieckhefer family in this transaction arises solely from the beneficial ownership of equity securities of iRise.

3/10/2004 Proxy Information

Edward P. Rogel, Senior Vice President, Human Resources, an executive officer of the Company, is the first cousin of Steven R. Rogel, Chairman of the Board of Directors, President and Chief Executive Officer.

In November 2003, Marvin D. Cooper, Senior Vice President, Pulp, Paper, Containerboard Manufacturing and Engineering purchased from the Company, for $380,200 in cash, 186 acres of timberland located in Marlboro County, South Carolina. The terms of the sale were negotiated on an armÕs-length basis.

William D. Ruckelshaus joined Weyerhaeuser in 1976 as Senior Vice President.