EXHIBIT 4.1 STOCK AND WARRANT PURCHASE AGREEMENT This Stock and Warrant Purchase Agreement (the "Agreement") is made as of May 11, 2001 between NASTECH PHARMACEUTICAL COMPANY INC., a Delaware corporation (the "Company"), and the purchasers who are...Stock and Warrant Purchase Agreement • June 12th, 2001 • Nastech Pharmaceutical Co Inc • Pharmaceutical preparations • New York
