X0304 4 2011-09-01 0001022079 QUEST DIAGNOSTICS INC DGX 0001222676 HAGEMANN ROBERT C/O QUEST DIAGNOSTICS INCORPORATED 3 GIRALDA FARMS MADISON NJ 07940 1 SVP & Chief Financial Officer Common Stock 2011-09-01 4 M 0 2500 48.74 A 142163 D Common Stock 2011-09-01 4 S 0 2500 50.0026 D 139663 D Common Stock 2011-09-01 4 M 0 1650 35.5325 A 141313 D Common Stock 2011-09-01 4 S 0 1650 49.9413 D 139663 D Common Stock 1766 I SDCP Stock Options (Right to Buy) 48.74 2011-09-01 4 M 0 2500 0 D 2012-02-22 Common Stock 2500 17500 D Stock Options (Right to Buy) 35.5325 2011-09-01 4 M 0 1650 0 D 2012-02-27 Common Stock 1650 11550 D This exercise and sale reported were effected pursuant to Rule 10b-5-1 sales plan adopted by the reporting person on February 7, 2011. The options vested in three annual installments on February 22, 2006, February 22, 2007 and February 22, 2008. The options vested in three installments on April 17, 2003, February 27, 2004 and February 27, 2005. This transaction was executed in multiple trades at prices ranging from $49.88 to $50.1701. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $49.88 to $49.98. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. The amount includes exempt purchases made under the Company's stock purchase plan. These underlying shares were acquired on a periodic basis by the trustee of the Company's Supplemental Deferred Compensation Plan. 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. /s/ William J. O'Shaughnessy, Jr., Attorney in Fact for Robert Hagemann 2011-09-06