v3.26.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2026
May 01, 2026
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Entity Registrant Name EIKON THERAPEUTICS, INC.  
Trading Symbol EIKN  
Entity Central Index Key 0001861123  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Common Stock, Shares Outstanding   54,138,628
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity File Number 001-43085  
Entity Tax Identification Number 84-2807586  
Entity Address, Address Line One 230 Harriet Tubman Way  
Entity Address, City or Town Millbrae  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 94030  
City Area Code 341  
Local Phone Number 777-0566  
Entity Incorporation, State or Country Code DE  
Document Quarterly Report true  
Document Transition Report false  
Title of 12(b) Security Common Stock, $0.0001 par value per share  
Security Exchange Name NASDAQ