EXHIBIT 4.1 STOCK AND WARRANT PURCHASE AGREEMENT This Stock and Warrant Purchase Agreement (the "Agreement") is made as of March 22, 2001 between NASTECH PHARMACEUTICAL COMPANY INC., a Delaware corporation (the "Company"), and the purchasers who are...Stock and Warrant Purchase Agreement • April 24th, 2001 • Nastech Pharmaceutical Co Inc • Pharmaceutical preparations • New York
