Exhibit 4.1 FIRST AMENDMENT TO RIGHTS AGREEMENT First Amendment (the "Amendment"), effective as of November 14, 2005 between Guidant Corporation, an Indiana corporation (the "Company") and EquiServe Trust Company, N.A. as rights agent (the "Rights...Rights Agreement • November 18th, 2005 • Guidant Corp • Surgical & medical instruments & apparatus • Indiana
ARTICLE I The Merger SECTION 1.01. The Merger...................................................1 SECTION 1.02. Closing......................................................2 SECTION 1.03. Effective Time...............................................2...Agreement and Plan of Merger • November 18th, 2005 • Guidant Corp • Surgical & medical instruments & apparatus • Indiana
