<SEC-DOCUMENT>0000950170-25-071371.txt : 20250514
<SEC-HEADER>0000950170-25-071371.hdr.sgml : 20250514
<ACCEPTANCE-DATETIME>20250514160557
ACCESSION NUMBER:		0000950170-25-071371
CONFORMED SUBMISSION TYPE:	144
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20250514
DATE AS OF CHANGE:		20250514

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NEWMARKET CORP
		CENTRAL INDEX KEY:			0001282637
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL ORGANIC CHEMICALS [2860]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				000000000
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		144
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	001-32190
		FILM NUMBER:		25945357

	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

REPORTING-OWNER:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Hazelgrove Bruce R III
		CENTRAL INDEX KEY:			0001318864
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		144

	MAIL ADDRESS:	
		STREET 1:		330 SOUTH FOURTH STREET
		CITY:			RICHMOND
		STATE:			VA
		ZIP:			23219
</SEC-HEADER>
<DOCUMENT>
<TYPE>144
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<headerData>
<submissionType>144</submissionType>
<filerInfo>
<filer>
<filerCredentials>
<cik>0001318864</cik>
<ccc>XXXXXXXX</ccc>
</filerCredentials>
</filer>
<liveTestFlag>LIVE</liveTestFlag>
</filerInfo>
</headerData>
<formData>
<issuerInfo>
<issuerCik>0001282637</issuerCik>
<issuerName>NewMarket Corporation</issuerName>
<secFileNumber>001-32190</secFileNumber>
<issuerAddress>
<street1 xmlns="http://www.sec.gov/edgar/common">330 South Fourth Street</street1>
<city xmlns="http://www.sec.gov/edgar/common">Richmond</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">VA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">23219</zipCode>
</issuerAddress>
<issuerContactPhone>804-788-5000</issuerContactPhone>
<nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>HAZELGROVE BRUCE R III</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
<relationshipsToIssuer>
<relationshipToIssuer>Officer</relationshipToIssuer>
</relationshipsToIssuer>
</issuerInfo>
<securitiesInformation>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<brokerOrMarketmakerDetails>
<name>Computershare Trust Company, N.A.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">P.O. Box 43078</street1>
<city xmlns="http://www.sec.gov/edgar/common">Providence</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">RI</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">02940-3078</zipCode>
</address>
</brokerOrMarketmakerDetails>
<noOfUnitsSold>311</noOfUnitsSold>
<aggregateMarketValue>199796</aggregateMarketValue>
<noOfUnitsOutstanding>9434506</noOfUnitsOutstanding>
<approxSaleDate>05/12/2025</approxSaleDate>
<securitiesExchangeName>NYSE</securitiesExchangeName>
</securitiesInformation>
<securitiesToBeSold>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<acquiredDate>02/27/2019</acquiredDate>
<natureOfAcquisitionTransaction>Performance Stock Award</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>132</amountOfSecuritiesAcquired>
<paymentDate>02/27/2019</paymentDate>
<natureOfPayment>N/A</natureOfPayment>
</securitiesToBeSold>
<securitiesToBeSold>
<securitiesClassTitle>Common Stock</securitiesClassTitle>
<acquiredDate>02/20/2020</acquiredDate>
<natureOfAcquisitionTransaction>Performance Stock Award</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>179</amountOfSecuritiesAcquired>
<paymentDate>02/20/2020</paymentDate>
<natureOfPayment>N/A</natureOfPayment>
</securitiesToBeSold>
<nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
<noticeSignature>
<noticeDate>05/13/2025</noticeDate>
<signature>/s/ Bruce R. Hazelgrove, III</signature>
</noticeSignature>
</formData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
