<SEC-DOCUMENT>0001104659-20-134972-index.html : 20201214
<SEC-HEADER>0001104659-20-134972.hdr.sgml : 20201214
<ACCEPTANCE-DATETIME>20201214060537
ACCESSION NUMBER:		0001104659-20-134972
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20201214
DATE AS OF CHANGE:		20201214
GROUP MEMBERS:		CASEY M. TANSEY
GROUP MEMBERS:		JONATHAN D. ROOT
GROUP MEMBERS:		PRESIDIO MANAGEMENT GROUP XII, L.L.C
GROUP MEMBERS:		U.S. VENTURE PARTNERS XII-A, L.P.

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Silverback Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001671858
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				811489190
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-91894
		FILM NUMBER:		201385001

	BUSINESS ADDRESS:	
		STREET 1:		500 FAIRVIEW AVENUE NORTH, SUITE 600
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98109
		BUSINESS PHONE:		206-456-2900

	MAIL ADDRESS:	
		STREET 1:		500 FAIRVIEW AVENUE NORTH, SUITE 600
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98109

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			U.S. Venture Partners XII, L.P.
		CENTRAL INDEX KEY:			0001734819
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D

	BUSINESS ADDRESS:	
		STREET 1:		1460 EL CAMINO REAL, SUITE 100
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
		BUSINESS PHONE:		(650) 854-9080

	MAIL ADDRESS:	
		STREET 1:		1460 EL CAMINO REAL, SUITE 100
		CITY:			MENLO PARK
		STATE:			CA
		ZIP:			94025
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>tm2038319d1_sc13d.htm
<DESCRIPTION>SC 13D
<TEXT>
Document 1 - file: tm2038319d1_sc13d.htm

</DOCUMENT>
</SEC-DOCUMENT>