<SEC-DOCUMENT>0000920465-20-000098-index.html : 20200622
<SEC-HEADER>0000920465-20-000098.hdr.sgml : 20200622
<ACCEPTANCE-DATETIME>20200622085054
ACCESSION NUMBER:		0000920465-20-000098
CONFORMED SUBMISSION TYPE:	SC TO-C
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20200622
DATE AS OF CHANGE:		20200622

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TETRAPHASE PHARMACEUTICALS INC
		CENTRAL INDEX KEY:			0001373707
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC TO-C
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-87366
		FILM NUMBER:		20977280

	BUSINESS ADDRESS:	
		STREET 1:		480 ARSENAL WAY
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472
		BUSINESS PHONE:		617.715.3600

	MAIL ADDRESS:	
		STREET 1:		480 ARSENAL WAY
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LA JOLLA PHARMACEUTICAL CO
		CENTRAL INDEX KEY:			0000920465
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				330361285
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC TO-C

	BUSINESS ADDRESS:	
		STREET 1:		4550 TOWNE CENTRE COURT
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
		BUSINESS PHONE:		858-207-4264

	MAIL ADDRESS:	
		STREET 1:		4550 TOWNE CENTRE COURT
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92121
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC TO-C
<SEQUENCE>1
<FILENAME>a20208-k22june2020.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a20208-k22june2020.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ex991_ljpcxtetraphasetoppi.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 2 - file: ex991_ljpcxtetraphasetoppi.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>ljpc8kimages0002.jpg
<TEXT>
Document 3 - file: ljpc8kimages0002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>ljpclogo.jpg
<TEXT>
Document 4 - file: ljpclogo.jpg

</DOCUMENT>
</SEC-DOCUMENT>