Sec Form 4 Filing - RING TIMOTHY M @ QUEST DIAGNOSTICS INC - 2020-06-08

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person RING TIMOTHY M 2. Issuer Name and Ticker or Trading Symbol QUEST DIAGNOSTICS INC [ DGX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 500 PLAZA DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 06/08/2020 (Street) SECAUCUS, NJ07094 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 06/08/2020 M( 1 ) 2,547 A $ 57.74 23,052 D Common Stock 06/08/2020 M( 1 ) 532 A $ 58.37 23,584 D Common Stock 06/08/2020 M( 1 ) 151 A $ 58.37 23,735 D Common Stock 06/08/2020 M( 1 ) 820 A $ 61.615 24,555 D Common Stock 06/08/2020 M( 1 ) 6,111 A $ 57.565 30,666 D Common Stock 06/08/2020 M( 1 ) 790 A $ 60.215 31,456 D Common Stock 06/08/2020 M( 1 ) 779 A $ 63.42 32,235 D Common Stock 06/08/2020 S( 1 ) 11,730 D $ 116.6 20,505 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Options (Right to Buy) $ 57.74 06/08/2020 M( 1 ) 2,547 ( 2 ) 12/06/2021 Common Stock 2,547 $ 57.74 0 D Stock Options (Right to Buy) $ 58.37 06/08/2020 M( 1 ) 532 01/03/2012 01/03/2022 Common Stock 532 $ 58.37 0 D Non-Qualifed Stock Option (right to buy) $ 58.37 06/08/2020 M( 1 ) 151 01/03/2012 01/03/2022 Common Stock 151 $ 58.37 0 D Stock Options (Right to Buy) $ 61.615 06/08/2020 M( 1 ) 820 04/02/2012 04/02/2022 Common Stock 820 $ 61.615 0 D Stock Options (Right to Buy) $ 57.565 06/08/2020 M( 1 ) 6,111 ( 3 ) 05/11/2022 Common Stock 6,111 $ 57.565 0 D Stock Options (Right to Buy) $ 60.215 06/08/2020 M( 1 ) 790 07/02/2012 07/02/2022 Common Stock 790 $ 60.215 0 D Stock Options (Right to Buy) $ 63.42 06/08/2020 M( 1 ) 779 10/01/2012 10/01/2022 Common Stock 779 $ 63.42 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other RING TIMOTHY M 500 PLAZA DRIVE SECAUCUS, NJ07094 X Signatures /s/ William J. O'Shaughnessy, Jr., attorney in fact for Timothy M. Ring 06/10/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The sale reported was effected pursuant to a Rule 10b5-1 sales plan adopted by the reporting person on May 7, 2020. ( 2 )The options vested in three equal annual installments beginning with the first on December 6, 2012, the second on December 6, 2013 and the final on December 6, 2014. ( 3 )The options vested in three equal annual installments beginning with the first on May 11, 2013, the second on May 11, 2014 and the final on May 11, 2015.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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