<SEC-DOCUMENT>0001193125-21-070610-index.html : 20210305
<SEC-HEADER>0001193125-21-070610.hdr.sgml : 20210305
<ACCEPTANCE-DATETIME>20210305094622
ACCESSION NUMBER:		0001193125-21-070610
CONFORMED SUBMISSION TYPE:	424B5
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20210305
DATE AS OF CHANGE:		20210305

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NEWMARKET CORP
		CENTRAL INDEX KEY:			0001282637
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL ORGANIC CHEMICALS [2860]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		424B5
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-253774
		FILM NUMBER:		21716842

	BUSINESS ADDRESS:	
		STREET 1:		330 S FOURTH ST
		STREET 2:		PO BOX 2189
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23218-2189
		BUSINESS PHONE:		804-788-5000

	MAIL ADDRESS:	
		STREET 1:		330 S FOURTH ST
		STREET 2:		PO BOX 2189
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23218-2189
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B5
<SEQUENCE>1
<FILENAME>d133425d424b5.htm
<DESCRIPTION>424B5
<TEXT>
Document 1 - file: d133425d424b5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g133425g60x98.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g133425g60x98.jpg

</DOCUMENT>
</SEC-DOCUMENT>