FORM 5 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Form 3 Holdings Reported Form 4 Transactions Reported

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 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 * GOTTWALD THOMAS E 2. Issuer Name and Ticker or Trading Symbol NEWMARKET CORP [NEU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) Chairman, President & CEO (Last) (First) (Middle) 330 SOUTH FOURTH STREET 3. Statement for Issuer's Fiscal Year Ended (Month/Day/Year) 12/31/2018 (Street) RICHMOND, VA 23219 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Reporting (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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned at end of Issuer's Fiscal Year (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Amount (A) or (D) Price Common Stock 04/02/2018   G 31,365 D $ 0 139,236 D   Common Stock 09/05/2018   G 9,842 A $ 0 149,078 D   Common Stock 11/26/2018   G 936 D $ 0 148,142 D   Common Stock 11/26/2018   G 72 A $ 0 148,214 (1) D   Common Stock 11/26/2018   G 72 A $ 0 4,670 I Shares held by wife Common Stock 11/26/2018   G 144 A $ 0 902 I Shares held as trustee for grandchild (trust 1) Common Stock 11/26/2018   G 144 A $ 0 454 I Shares held as trustee for grandchild (trust 2) Common Stock 11/26/2018   G 144 A $ 0 318 I Shares held as trustee for grandchild (trust 3) Common Stock 11/26/2018   G 144 A $ 0 144 I Shares held as trustee for grandchild (trust 4) Common Stock 12/19/2018   G 76 A $ 0 978 I Shares held as trustee for grandchild (trust 1) Common Stock 12/19/2018   G 76 A $ 0 530 I Shares held as trustee for grandchild (trust 2) Common Stock 12/19/2018   G 76 A $ 0 394 I Shares held as trustee for grandchild (trust 3) Common Stock 12/19/2018   G 76 A $ 0 220 I Shares held as trustee for grandchild (trust 4) Common Stock             33,952.78 I NewMarket Savings Plan Common Stock             138,073 I By grantor retained annuity trust Common Stock             212,407 I Shares held as co-trustee fbo (among others reporting Floyd D. Gottwald) Common Stock             6,889 I Shares held as co-trustee fbo children dtd. 12/16/91 Common Stock             500 I Shares held by reporting person's son Mark Haywood Gottwald

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

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SEC 2270 (9-02)

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 (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

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 (Month/Day/Year)

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 at End of Issuer's Fiscal Year (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
GOTTWALD THOMAS E 330 SOUTH FOURTH STREET RICHMOND, VA 23219	  X	Â	  Chairman, President & CEO	Â

Signatures

/s/ M. Rudolph West (By Power of Attorney for Thomas E. Gottwald)		02/14/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Following a transaction on December 18, 2018 and previously reported (a disposition of 74 shares), the reporting person's direct holdings as of 12/31/2018 equal 148,140.
  Remarks: The reporting person is no longer listing the holdings in various trusts previously included on his Section 16 filings because he no longer serves as trustee and therefore is no longer deemed to have a beneficial interest in the shares held by such trusts.

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