X0202 4/A 2005-01-31 2005-02-02 0 0001022079 QUEST DIAGNOSTICS INC DGX 0001222679 PREVOZNIK MICHAEL E 0 1 0 0 Sr. VP, General Counsel Common Stock 2005-01-31 4 M 0 20000 13.17 A 39801 D Common Stock 2005-01-31 4 S 0 17225 94.9026 D 22576 D Common Stock 2005-01-31 4 F 0 2776 94.9026 D 19800 D Common Stock 2005-02-01 4 S 0 6993 95.2 D 12807 D Common Stock 612 I 401(k)/SDCP Stock Options (Right to buy) 13.17 2005-01-31 4 M 0 20000 13.17 D 1999-08-16 2009-08-16 Common Stock 20000 20552 D Stock Options (Right to buy) 94.9026 2005-01-31 4 A 0 2776 94.9026 A 2006-01-31 2009-08-16 Common Stock 2776 2776 D These underlying shares were acquired on a periodic basis by the trustee of the Company's tax qualified Profit Sharing (401(k)) plan and/or the Company's Supplemental Deferred Compensation Plan (SDCP). The information was obtained from the plan administrator as of a recent date. The number of shares is based on the account balance of the Company stock fund under the plan (which includes some money market instruments), divided by the market price of the Company's stock as of that date. Sirisha Gummaregula, atty-in-fact for Michael E. Prevoznik 2005-02-03