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Document and Entity Information
Nov. 10, 2021
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001671858
Document Type 8-K
Document Period End Date Nov. 10, 2021
Entity Registrant Name Silverback Therapeutics, Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-39756
Entity Tax Identification Number 81-1489190
Entity Address, Address Line One 500 Fairview Ave N
Entity Address, Address Line Two Suite 600
Entity Address, City or Town Seattle
Entity Address, State or Province WA
Entity Address, Postal Zip Code 98109
City Area Code (206)
Local Phone Number 456-2900
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.0001 par value per share
Trading Symbol SBTX
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period false