Exhibit 4.3 AMENDMENT NO. 2 TO RIGHTS AGREEMENT THIS AMENDMENT (this "Amendment") effective as of the 31st day of December, 1999, amends and modifies, at the Company's direction, a certain Rights Agreement dated as of December 31, 1996 (the "Rights...Rights Agreement • March 30th, 2000 • Quest Diagnostics Inc • Services-medical laboratories • Delaware
Contract Type FiledMarch 30th, 2000 Company Industry Jurisdiction
BETWEENEmployment Agreement • March 30th, 2000 • Quest Diagnostics Inc • Services-medical laboratories • New York
Contract Type FiledMarch 30th, 2000 Company Industry Jurisdiction
AMENDMENT NO. 1Quest Diagnostics Inc • March 30th, 2000 • Services-medical laboratories • New York
Company FiledMarch 30th, 2000 Industry Jurisdiction