THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Amegy Bancorporation, Inc. (Retired) (ABNK.X)

4/1/2005 Proxy Information

John W. Johnson became Chairman of Southwest Bank of Texas National Association in 1982 and served in that capacity until 1996.

Many of the directors and executive officers of the Company and their associates, which include corpora-tions, partnerships, and other organizations in which they are officers or partners or in which they and their immediate families have at least a 5% interest, are customers of the Bank. During 2004, the Bank made loans in the ordinary course of business to certain directors and certain executive officers of the Company and their associates, all of which the Company believes were on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with persons unaffiliated with the Company and did not involve more than the normal risk of collectibility or present other unfavorable features. Loans to directors, executive officers, and principal shareholders of the Company (i.e., those who own 10% or more of the outstanding shares of Common Stock) are subject to limitations contained in the Federal Reserve Act, the principal effect of which is to require that extensions of credit by the Bank to executive officers, directors, and principal shareholders satisfy the foregoing standards. On December 31, 2004, all of such term loans aggregated $91.7 million and the total revolving lines of credit aggregated $84.1 million. The Company expects to have such transactions or transactions on a similar basis with its directors, executive officers, and principal shareholders and their associates in the future.

On November 22, 1999, the Bank executed a commitment to invest a total of $2,000,000 in CapStreet II, L.P., a $330,000,000 private equity fund sponsored and controlled by The CapStreet Group, LLP, a private investment company founded by Fred R. Lummis. Mr. Lummis is the Managing Director of and a partner in The CapStreet Group, LLP. The Bank has made capital contributions to the fund aggregating $1,638,918.

3/25/2004 Proxy Information

John W. Johnson became Chairman of Southwest Bank of Texas National Association in 1982 and served in that capacity until 1996, when he was named Chairman of the Executive Committee.

Adolph A. Pfeffer was an Organizing Director of Pinemont Bank in 1960, served on its board of directors, the last 20 years as Chairman, until its merger with Southwest Bank of Texas National Association in 1997.

Many of the directors and executive officers of the Company and their associates, which include corpora-tions, partnerships, and other organizations in which they are officers or partners or in which they and their immediate families have at least a 5% interest, are customers of the Bank. During 2003, the Bank made loans in the ordinary course of business to certain directors and certain executive officers of the Company and their associates, all of which the Company believes were on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with persons unaffiliated with the Company and did not involve more than the normal risk of collectibility or present other unfavorable features. Loans to directors, executive officers, and principal shareholders of the Company (i.e., those who own 10% or more of the outstanding shares of Common Stock) are subject to limitations contained in the Federal Reserve Act, the principal effect of which is to require that extensions of credit by the Bank to executive officers, directors, and principal shareholders satisfy the foregoing standards. On December 31, 2003, all of such term loans aggregated $59.2 million and the total revolving lines of credit aggregated $78.3 million. The Company expects to have such transactions or transactions on a similar basis with its directors, executive officers, and principal shareholders and their associates in the future.

On November 22, 1999, the Bank executed a commitment to invest a total of$2,000,000 in CapStreet II, L.P., a $330,000,000 private equity fund sponsored and controlled by The CapStreet Group, LLP, a private investment company founded by Fred R. Lummis. Mr. Lummis is the Managing Director of and a partner in The CapStreet Group, LLP. The Bank has made capital contributions to the fund aggregating $1,406,394.

3/13/2003 Proxy Information

On November 22, 1999, the Bank executed a commitment to invest a total of $2,000,000 in CapStreet II, L.P. (formerly Summit Capital II, L.P.), a $250,000,000 private equity fund sponsored and controlled by The CapStreet Group, LLP (formerly Summit Capital Inc.), a private investment company founded by Fred R. Lummis. Mr. Lummis is the President of and owns a 50% equity interest in Summit Capital, Inc. Since inception, the Bank satisfied capital calls aggregating $1,175,978.