---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-056206"
form_type: "8-K"
ticker: "OM"
cik: "0001484612"
company_name: "Outset Medical, Inc."
filed_at: "2025-03-18T23:59:59+00:00"
generated_at: "2026-05-24T13:32:21.651705+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Outset Medical announces 1-for-15 reverse stock split effective March 20, 2025

## Summary
- Reverse split ratio set at 1-for-15; outstanding shares to drop from ~265M to ~17M.
- Effective 12:01 a.m. ET on March 20, 2025; split-adjusted trading starts at market open.
- Symbol unchanged (OM); new CUSIP 690145206; authorized shares and par value unchanged.
- Fractional shares will be cashed out; equity awards and exercise prices proportionately adjusted.
- Stockholders approved split ratio on March 5, 2025; board set final ratio.

## SEC filing metadata
- accession: 0001193125-25-056206
- form_type: 8-K
- ticker: OM
- cik: 0001484612
- company_name: Outset Medical, Inc.
- filed_at: 2025-03-18T23:59:59+00:00
- event_type: other_material
- 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/1484612/000119312525056206/0001193125-25-056206-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1484612/000119312525056206/d857573d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-056206
- JSON: https://secwatch.observer/filing/0001193125-25-056206.json
- Plain text: https://secwatch.observer/filing/0001193125-25-056206.txt

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