v3.25.2
Document and Entity Information
Aug. 24, 2025
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Aug. 24, 2025
Entity Registrant Name OMNIAB, INC.
Entity Incorporation State Country Code DE
Entity File Number 001-40720
Entity Tax Identification Number 98-1584818
Entity Address Address Line 1 5980 Horton Street, Suite 600
Entity Address City Or Town Emeryville
Entity Address State Or Province CA
Entity Address Postal Zip Code 94608
City Area Code 510
Local Phone Number 250-7800
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period false
Amendment Flag false
Entity Central Index Key 0001846253
Common Stock [Member]  
Document Information [Line Items]  
Security 12b Title Common stock, par value $0.0001 per share
Trading Symbol OABI
Security Exchange Name NASDAQ
Warrant [Member]  
Document Information [Line Items]  
Security 12b Title Warrants to purchase common stock
Trading Symbol OABIW
Security Exchange Name NASDAQ