secwatch.observer — SEC 8-K summary ====================================== Issuer: Moleculin Biotech, Inc. (MBRX) CIK: 0001659617 Form: 8-K Filed at: 2026-07-31T12:00:12+00:00 Accession: 0001437749-26-025167 Event type: other_material Sentiment: positive Materiality: 0.80 Item codes: 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Moleculin reports 37% blinded CRc in MIRACLE trial; venetoclax-failed subgroup similar -------------------------------------------------------------------------------- - Preliminary blinded CRc of 37% and CR of 24% in 62 evaluable R/R AML subjects. - Among 30 patients who failed prior venetoclax, CRc also 37% (3x published salvage rate of ~13%). - No cardiotoxicity observed; enrollment at 74 of 90; final Part A treatment expected Sept 2026. - Unblinded Part A results expected Dec 2026–Feb 2027; prior unblinded Annamycin arms showed CRc 50-57% vs control 29%. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1659617/000143774926025167/0001437749-26-025167-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1659617/000143774926025167/mbrx20260729_8k.htm HTML page: https://secwatch.observer/filing/0001437749-26-025167 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer