THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

LaBranche & Co., Incorporated (LAB)

4/15/2005 Proxy Information

Payments for Use of NYSE Memberships

Some of our executive officers have contributed the use of their NYSE memberships to our LaBranche & Co. LLC subsidiary and receive payments from LaBranche & Co. LLC based on the market value of the memberships. For 2004, the named executive officers listed below received payments from LaBranche & Co. LLC in the amounts set forth opposite their names: (see page 20 of proxy for table).

Ownership Interest in Limited Liability Company

Michael LaBranche owns a 12.5% membership interest in a limited liability company in which one of our subsidiaries, LABDR Services, Inc., also own a 25% membership interest. This limited liability company, which owns a 100% interest in one small aircraft and an 18.75% interest in another small aircraft, allows its members to share flight time based on their respective membership interests. Neither we nor Mr. LaBranche has derived any income from the ownership of our or his membership interest in this limited liability company.

4/12/2004 Proxy Information

Some of our executive officers have contributed the use of their NYSE memberships to our LaBranche & Co. LLC subsidiary and receive payments from LaBranche & Co. LLC based on the market value of the memberships. For 2003, the named executive officers listed below received payments from LaBranche & Co. LLC in the amounts set forth opposite their names:

Payment Name Amounts Michael LaBranche $ 302,500 Alfred O. Hayward, Jr. 302,500 William J. Burke, III 302,500

Michael LaBranche owns a 12.5% membership interest in a limited liability company in which we also own a 25% membership interest. This limited liability company, which owns a 100% interest in one small aircraft and an 18.75% interest in another small aircraft, allows its members to share flight time based on their respective membership interests. Neither we nor Mr. LaBranche has derived any income from the ownership of our or his membership interest in this limited liability company.

Robert M. Murphy served as Chief Executive Officer of LaBranche & Co. LLC from March 2001 to November 2003.

James G. Gallagher a former Executive Vice President of LaBranche & Company, Inc.

4/16/2003 Proxy Information

Payments for Use of NYSE Memberships

Some of our executive officers have contributed the use of their NYSE memberships to our LaBranche & Co. LLC subsidiary and receive payments from LaBranche & Co. LLC based on the market value of the memberships. For 2002, the named executive officers listed below received payments from LaBranche & Co. LLC in the amounts set forth opposite their names:

Name Payment Amounts -------------------------------------------------------------------------------- Michael LaBranche $ 330,000 James G. Gallagher (1) 330,000 Alfred O. Hayward, Jr. 206,250 Robert M. Murphy 330,000 William J. Burke, III 330,000

(1) Mr. Gallagher resigned as an executive officer and director in January 2003.

Interest on and Repayment of Indebtedness

Ms. Claire B. Robb, the mother of George E. Robb Jr., one of our former directors who resigned in January 2003, holds $2,000,000 of subordinated indebtedness due June 14, 2003, which bears interest at an annual rate of 12.5% payable on a quarterly basis. During 2002, we made payments of interest to Ms. Robb in the aggregate amount of $250,000.

During 2002, we repaid in full a note in the aggregate principal amount of $169,204 and bearing interest at an annual rate of 9.5% held by James Robb, the brother of George E. Robb, Jr., one of our former directors who resigned in January 2003. As a result of such repayment, we made payments of interest and principal to James Robb during 2002 in the aggregate amount of $176,348.

During 2002, we repaid in full a note in the aggregate principal amount of $169,204 and bearing interest at an annual rate of 9.5% held by Bruce Wright, the brother-in-law of George E. Robb, Jr., one of our former directors who resigned in January 2003. As a result of such repayment, we made payments of interest and principal to Mr. Wright during 2002 in the aggregate amount of $176,348.

During 2002, we repaid in full a note in the aggregate principal amount of $2,318,390, and bearing interest at an annual rate of 10.0% held by Patrick Murphy, the brother of Robert M. Murphy, one of our directors and the Chief Executive Officer of our LaBranche & Co. LLC subsidiary. As a result of such repayment, we made payments of interest and principal to Patrick Murphy during 2002 in the aggregate amount of $2,510,829.

During 2002, we repaid in full a subordinated note in the aggregate principal amount of $350,000 and bearing interest at an annual rate of 8.0% held by the Estate of Kathryn Gallagher. Kathryn Gallagher is the mother of James G. Gallagher, a former executive officer and director who retired in January 2003. As a result of such repayment, we made payments of principal and interest to the Estate of Kathryn Gallagher during 2002 in the aggregate amount of $364,000.

On August 7, 2002, we issued to RPM Nautical Foundation, Inc. ("RPM Nautical") subordinated notes in the aggregate principal amount of $8.0 million in exchange for the 8,000 shares of our Series A preferred stock then held by RPM Nautical. We also paid to RPM Nautical, in cash, the amount of accrued and unpaid dividends with respect to the shares of our Series A preferred stock held by RPM Nautical as of August 6, 2002. RPM Nautical is a non-profit organization of which George E. Robb, Jr., one of our former directors who resigned in January 2003, is a founder and director.

Michael LaBranche owns a 12.5% membership interest in a limited liability company in which we also own a 25% membership interest. This limited liability company, which owns a 100% interest in one small aircraft and an 18.75% interest in another small aircraft, allows its members to share flight time based on their respective membership interests. Neither we nor Mr. LaBranche has derived any income from the ownership of our or his membership interest in this limited liability company.