<SEC-DOCUMENT>0001459839-21-000029-index.html : 20210325
<SEC-HEADER>0001459839-21-000029.hdr.sgml : 20210325
<ACCEPTANCE-DATETIME>20210325161150
ACCESSION NUMBER:		0001459839-21-000029
CONFORMED SUBMISSION TYPE:	RW
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20210325
DATE AS OF CHANGE:		20210325

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SI-BONE, Inc.
		CENTRAL INDEX KEY:			0001459839
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				262216351
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		RW
		SEC ACT:		
		SEC FILE NUMBER:	333-254095
		FILM NUMBER:		21772482

	BUSINESS ADDRESS:	
		STREET 1:		471 EL CAMINO REAL, SUITE 101
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95050
		BUSINESS PHONE:		4082070700

	MAIL ADDRESS:	
		STREET 1:		471 EL CAMINO REAL, SUITE 101
		CITY:			SANTA CLARA
		STATE:			CA
		ZIP:			95050

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SI-Bone Inc.
		DATE OF NAME CHANGE:	20090326
</SEC-HEADER>
<DOCUMENT>
<TYPE>RW
<SEQUENCE>1
<FILENAME>a2021-03x25lettertosecresx.htm
<DESCRIPTION>RW
<TEXT>
Document 1 - file: a2021-03x25lettertosecresx.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>image_01a.jpg
<DESCRIPTION>RW
<TEXT>
Document 2 - file: image_01a.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>image_11a.jpg
<DESCRIPTION>RW
<TEXT>
Document 3 - file: image_11a.jpg

</DOCUMENT>
</SEC-DOCUMENT>