Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2019
Mar. 13, 2020
Jun. 30, 2019
Document And Entity Information      
Entity Registrant Name Monopar Therapeutics    
Entity Central Index Key 0001645469    
Document Type 10-K    
Document Period End Date Dec. 31, 2019    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Is Entity a Well-known Seasoned Issuer? No    
Is Entity a Voluntary Filer? No    
Is Entity's Reporting Status Current? No    
Entity Filer Category Non-accelerated Filer    
Entity Emerging Growth Company true    
Entity Ex Transition Period true    
Entity Small Business true    
Entity Shell Company false    
Entity Public Float     $ 0
Entity Common Stock, Shares Outstanding   10,621,535  
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2019    
Entity Interactive Data Current Yes    
Entity Incorporation State Country Code DE    
Entity File Number 001-39070