<SEC-DOCUMENT>0001513211-18-000005-index.html : 20180725
<SEC-HEADER>0001513211-18-000005.hdr.sgml : 20180725
<ACCEPTANCE-DATETIME>20180725170824
ACCESSION NUMBER:		0001513211-18-000005
CONFORMED SUBMISSION TYPE:	13F-HR
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180630
FILED AS OF DATE:		20180725
DATE AS OF CHANGE:		20180725
EFFECTIVENESS DATE:		20180725

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Main Street Research LLC
		CENTRAL INDEX KEY:			0001513211
		IRS NUMBER:				680313978
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		13F-HR
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	028-14411
		FILM NUMBER:		18969326

	BUSINESS ADDRESS:	
		STREET 1:		30 LIBERTY SHIP WAY, SUITE 3330
		CITY:			SAUSALITO
		STATE:			CA
		ZIP:			94965
		BUSINESS PHONE:		1-415-289-1010

	MAIL ADDRESS:	
		STREET 1:		30 LIBERTY SHIP WAY, SUITE 3330
		CITY:			SAUSALITO
		STATE:			CA
		ZIP:			94965
</SEC-HEADER>
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<TYPE>13F-HR
<SEQUENCE>1
<FILENAME>primary_doc.xml
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Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

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<DOCUMENT>
<TYPE>INFORMATION TABLE
<SEQUENCE>2
<FILENAME>13f_063018.xml
<TEXT>
Document 2 - file: 13f_063018.html

Document 2 - RAW XML: 13f_063018.xml

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</SEC-DOCUMENT>