Note 1 - Nature of Business	3 Months Ended
Mar. 31, 2025
Notes to Financial Statements
Nature of Operations [Text Block]	1. Nature of Business The terms “MBI” or “the Company”, “we”, “our” and “us” are used herein to refer to Moleculin Biotech, Inc. MBI is a clinical-stage pharmaceutical company, organized as a Delaware corporation in July 2015. MBI is a late-stage pharmaceutical development company currently conducting a pivotal Phase 3 trial evaluating Annamycin, also known by its non-proprietary name "naxtarubicin", in combination with Cytarabine for the treatment of subjects with released/refractory acute myeloid leukemia. Additionally, the Company has two portfolios of technologies for hard-to-treat cancers and viruses with clinical and preclinical research funded by investigators at academic institutions. Each of its three core technologies is based substantially on discoveries made at and licensed from the University of Texas MD Anderson Cancer Center (MD Anderson) in Houston, Texas, and features one or more drugs that have successfully completed a Phase 1 clinical trial. Three of its six drug candidates have shown human activity in clinical trials and are currently or have been in Phase 1B/2 or Phase 2 clinical trials. Since MBI’s inception, its drugs have completed, are currently in, or have been permitted to proceed in, fourteen clinical trials. Annamycin, in a unique multilamellar lipid formulation, is the Company’s lead molecule, and MBI has recently concluded one Phase 1B/2 clinical trial for treating Acute Myeloid Leukemia (AML) and has begun treating subjects in its Phase 3 clinical trial for the treatment of AML. Annamycin is also in two Phase 1B/2 clinical trials for treating Soft Tissue Sarcoma metastasized to the lungs (STS lung metastases, STS lung mets, or Advanced STS), on physician sponsored. Additionally, there is another phase 1B/2 clinical trial that is physician sponsored which is investigating using WP1066 in combination with radiation for the treatment of glioblastoma, a form of brain cancer. The physician-sponsored trials utilize primarily external funds, such as grant funds, which are not presented in these financial statements. The Company does not have manufacturing facilities and all manufacturing activities are contracted out to third parties. Additionally, the Company does not have a sales organization. The Company’s overall strategy is to seek potential out-licensing or outsourcing opportunities with development/commercialization strategic partners who are better suited for the marketing, sales and distribution of its drugs, if approved. In 2019, the Company sublicensed its technologies to Animal Life Sciences, Inc. (ALI), to enable research and commercialization for non-human use and share development data. As part of this agreement, ALI issued to the Company a 10% equity interest in ALI.

Note 1 - Nature of Business

3 Months Ended

Mar. 31, 2025

1. Nature of Business

The terms “MBI” or “the Company”, “we”, “our” and “us” are used herein to refer to Moleculin Biotech, Inc. MBI is a clinical-stage pharmaceutical company, organized as a Delaware corporation in July 2015. MBI is a late-stage pharmaceutical development company currently conducting a pivotal Phase 3 trial evaluating Annamycin, also known by its non-proprietary name "naxtarubicin", in combination with Cytarabine for the treatment of subjects with released/refractory acute myeloid leukemia. Additionally, the Company has two portfolios of technologies for hard-to-treat cancers and viruses with clinical and preclinical research funded by investigators at academic institutions.

Each of its three core technologies is based substantially on discoveries made at and licensed from the University of Texas MD Anderson Cancer Center (MD Anderson) in Houston, Texas, and features one or more drugs that have successfully completed a Phase 1 clinical trial. Three of its six drug candidates have shown human activity in clinical trials and are currently or have been in Phase 1B/2 or Phase 2 clinical trials. Since MBI’s inception, its drugs have completed, are currently in, or have been permitted to proceed in, fourteen clinical trials. Annamycin, in a unique multilamellar lipid formulation, is the Company’s lead molecule, and MBI has recently concluded one Phase 1B/2 clinical trial for treating Acute Myeloid Leukemia (AML) and has begun treating subjects in its Phase 3 clinical trial for the treatment of AML. Annamycin is also in two Phase 1B/2 clinical trials for treating Soft Tissue Sarcoma metastasized to the lungs (STS lung metastases, STS lung mets, or Advanced STS), on physician sponsored. Additionally, there is another phase 1B/2 clinical trial that is physician sponsored which is investigating using WP1066 in combination with radiation for the treatment of glioblastoma, a form of brain cancer.

The physician-sponsored trials utilize primarily external funds, such as grant funds, which are not presented in these financial statements. The Company does not have manufacturing facilities and all manufacturing activities are contracted out to third parties. Additionally, the Company does not have a sales organization. The Company’s overall strategy is to seek potential out-licensing or outsourcing opportunities with development/commercialization strategic partners who are better suited for the marketing, sales and distribution of its drugs, if approved.

In 2019, the Company sublicensed its technologies to Animal Life Sciences, Inc. (ALI), to enable research and commercialization for non-human use and share development data. As part of this agreement, ALI issued to the Company a 10% equity interest in ALI.