secwatch.observer — SEC 8-K summary ====================================== Issuer: Avalyn Pharma Inc. (AVLN) CIK: 0001540171 Form: 8-K Filed at: 2026-06-17T12:03:19+00:00 Accession: 0001193125-26-273405 Event type: other_material Sentiment: positive Materiality: 0.55 Item codes: 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Avalyn completes Phase 2b MIST trial enrollment of 375 patients for inhaled pirfenidone in PPF; topline data H2 2027 -------------------------------------------------------------------------------- - Completed target enrollment of 375 patients in Phase 2b MIST trial of AP01 (inhaled pirfenidone) for progressive pulmonary fibrosis (PPF). - Trial is randomized, double-blind, placebo-controlled, evaluating two doses (50 mg and 100 mg BID) vs placebo; primary endpoint is change in FVC at 52 weeks. - Additional patients in screening remain eligible for randomization over next several weeks; enrollment completed ahead of schedule. - Topline 12-month clinical results expected in the second half of 2027. - AP01's tolerability profile may enable longer treatment duration, based on ATLAS Phase 1b and open-label extension data. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1540171/000119312526273405/0001193125-26-273405-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1540171/000119312526273405/ck0001540171-20260617.htm HTML page: https://secwatch.observer/filing/0001193125-26-273405 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer