EX-24 5 c63275ex24.txt POWERS OF ATTORNEY 1 EXHIBIT 24 POWER OF ATTORNEY Each of the undersigned hereby appoints John M. Siebert, Ph.D. and David A. Feste, and each of them (with full power to act alone), as attorneys and agents for the undersigned, with full power of substitution, for and in the name, place and stead of the undersigned, to sign and file with the Securities and Exchange Commission under the Securities Act of 1933, as amended, any and all amendments and exhibits to this Registration Statement and any and all applications, instruments and other documents to be filed with the Securities and Exchange Commission pertaining to the registration of the securities covered hereby, with full power and authority to do and perform any and all acts and things whatsoever requisite and necessary or desirable.
Signature Title Date --------- ----- ---- /s/ John M. Siebert President, Chief Executive Officer ------------------------------- (Principal Executive Officer) and Director May 11, 2001 John M. Siebert, Ph.D. /s/ David A. Feste Chief Financial Officer (Principal ------------------------------- Financial and Accounting Officer) and David A. Feste Secretary May 11, 2001 /s/ Terrence W. Glarner Director May 11, 2001 ------------------------------- Terrence W. Glarner /s/ Steven B. Ratoff Director May 11, 2001 ------------------------------- Steven B. Ratoff /s/ Joseph R. Robinson Director May 11, 2001 ------------------------------- Joseph R. Robinson