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Cover
May 10, 2024
Document Type 8-K
Amendment Flag false
Document Period End Date May 10, 2024
Entity File Number 000-29959
Entity Registrant Name Cassava Sciences, Inc.
Entity Central Index Key 0001069530
Entity Tax Identification Number 91-1911336
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 6801 N Capital of Texas Highway
Entity Address, Address Line Two  Building 1; Suite 300
Entity Address, City or Town Austin
Entity Address, State or Province TX
Entity Address, Postal Zip Code 78731
City Area Code (512)
Local Phone Number 501-2444
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock, $0.001 par value  
Title of 12(b) Security Common Stock, $0.001 par value
Trading Symbol SAVA
Security Exchange Name NASDAQ
Warrants, exercisable for shares of Common Stock  
Title of 12(b) Security Warrants, exercisable for shares of Common Stock
Trading Symbol SAVAW
Security Exchange Name NASDAQ