---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-200766"
form_type: "8-K"
ticker: "BDSX"
cik: "0001439725"
company_name: "BIODESIX INC"
filed_at: "2025-09-11T23:59:59+00:00"
generated_at: "2026-05-17T06:51:59.052360+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Biodesix announces 1-for-20 reverse stock split effective Sept 15, 2025

## Summary
- Reverse split ratio 1:20; shares outstanding drop from ~156M to ~8M.
- Effective 12:01 a.m. ET Sept 15; split-adjusted trading begins at market open.
- CUSIP changes to 09075X207; ticker BDSX unchanged.
- Outstanding options, RSUs, and warrants proportionately adjusted; fractional shares paid in cash.
- Stockholders approved at May 20, 2025 annual meeting; final ratio set by board.

## SEC filing metadata
- accession: 0001193125-25-200766
- form_type: 8-K
- ticker: BDSX
- cik: 0001439725
- company_name: BIODESIX INC
- filed_at: 2025-09-11T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1439725/000119312525200766/0001193125-25-200766-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1439725/000119312525200766/d45697d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-200766
- JSON: https://secwatch.observer/filing/0001193125-25-200766.json
- Plain text: https://secwatch.observer/filing/0001193125-25-200766.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.