EXHIBIT 10.23 SECURITIES PURCHASE AGREEMENT AMONG ALLOS THERAPEUTICS, INC. AND PERSEUS-SOROS BIOPHARMACEUTICAL FUND, LP DATED: APRIL 24, 2002 Table of ContentsSecurities Purchase Agreement • April 30th, 2002 • Allos Therapeutics • Pharmaceutical preparations • Delaware
Contract Type FiledApril 30th, 2002 Company Industry Jurisdiction
ARTICLE I DEFINITIONSRegistration Rights Agreement • April 30th, 2002 • Allos Therapeutics • Pharmaceutical preparations • Delaware
Contract Type FiledApril 30th, 2002 Company Industry Jurisdiction