EXHIBIT 4 SERIES B CONVERTIBLE PREFERRED STOCK AND WARRANT PURCHASE AGREEMENT THIS SERIES B CONVERTIBLE PREFERRED STOCK AND WARRANT PURCHASE AGREEMENT (this "Agreement") is made and entered into effective as of March 4, 2004, by and among...Series B Convertible Preferred Stock and Warrant Purchase Agreement • May 17th, 2004 • Trans Industries Inc • Miscellaneous manufacturing industries • Ohio
Contract Type FiledMay 17th, 2004 Company Industry Jurisdiction
AMENDMENT NO. 1 TO AMENDED AND RESTATED SERIES B CONVERTIBLE PREFERRED STOCK AND WARRANT PURCHASE AGREEMENTSeries B Convertible Preferred Stock and Warrant Purchase Agreement • June 25th, 2002 • Penton Media Inc • Periodicals: publishing or publishing & printing • New York
Contract Type FiledJune 25th, 2002 Company Industry Jurisdiction
AMENDMENT NO. 1 TO AMENDED AND RESTATED SERIES B CONVERTIBLE PREFERRED STOCK AND WARRANT PURCHASE AGREEMENTSeries B Convertible Preferred Stock and Warrant Purchase Agreement • June 4th, 2002 • Penton Media Inc • Periodicals: publishing or publishing & printing • New York
Contract Type FiledJune 4th, 2002 Company Industry Jurisdiction
DATED AS OF MARCH 18, 2002Series B Convertible Preferred Stock and Warrant Purchase Agreement • March 28th, 2002 • Sandler Capital Management • New York
Contract Type FiledMarch 28th, 2002 Company Jurisdiction
DATED AS OF MARCH 18, 2002Series B Convertible Preferred Stock and Warrant Purchase Agreement • March 19th, 2002 • Penton Media Inc • Periodicals: publishing or publishing & printing • New York
Contract Type FiledMarch 19th, 2002 Company Industry Jurisdiction
DEFINITIONSSeries B Convertible Preferred Stock and Warrant Purchase Agreement • April 13th, 1999 • Integra Lifesciences Corp • Biological products, (no disgnostic substances) • New Jersey
Contract Type FiledApril 13th, 1999 Company Industry Jurisdiction
Page 24 of 83 Pages EXHIBIT E SERIES B CONVERTIBLE PREFERRED STOCK AND WARRANT PURCHASE AGREEMENTSeries B Convertible Preferred Stock and Warrant Purchase Agreement • April 8th, 1999 • Soros Fund Management LLC • Biological products, (no disgnostic substances) • New Jersey
Contract Type FiledApril 8th, 1999 Company Industry Jurisdiction