---
schema_version: "secwatch.filing_event.v1"
accession: "0000885725-23-000033"
form_type: "8-K"
ticker: "BSX"
cik: "0000885725"
company_name: "BOSTON SCIENTIFIC CORP"
filed_at: "2023-06-06T23:59:59+00:00"
generated_at: "2026-06-14T07:04:20.642207+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Boston Scientific converts all Series A Preferred Stock into common; 24M shares issued

## Summary
- On June 1, 2023, all outstanding 5.50% Mandatory Convertible Preferred Stock (Series A) automatically converted into common stock.
- Conversion rate: 2.3834 common shares per preferred share; cash paid for fractional shares.
- Approximately 24 million common shares issued; no preferred shares remain outstanding.
- Boston Scientific requested NYSE delisting and deregistration of the preferred stock.

## SEC filing metadata
- accession: 0000885725-23-000033
- form_type: 8-K
- ticker: BSX
- cik: 0000885725
- company_name: BOSTON SCIENTIFIC CORP
- filed_at: 2023-06-06T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/885725/000088572523000033/0000885725-23-000033-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/885725/000088572523000033/bsx-20230601.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000885725-23-000033
- JSON: https://secwatch.observer/filing/0000885725-23-000033.json
- Plain text: https://secwatch.observer/filing/0000885725-23-000033.txt

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