---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-113487"
form_type: "8-K"
ticker: "OSIS"
cik: "0001039065"
company_name: "OSI SYSTEMS INC"
filed_at: "2025-11-18T23:59:59+00:00"
generated_at: "2026-05-16T18:41:12.000791+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# OSI Systems prices upsized $500M convertible notes offering, repurchases shares

## Summary
- Priced $500M of 0.50% convertible senior notes due 2031, up from originally planned $400M.
- Initial conversion price ~$353.82, representing 32.5% premium over $267.03 closing price on Nov 17.
- Net proceeds estimated at $489.4M; expects to use ~$146.1M to repurchase 546,945 shares concurrently.
- Remainder to repay revolving credit facility and for general corporate purposes.
- Notes mature Feb 1, 2031; interest payable semi-annually at 0.50%.

## SEC filing metadata
- accession: 0001104659-25-113487
- form_type: 8-K
- ticker: OSIS
- cik: 0001039065
- company_name: OSI SYSTEMS INC
- filed_at: 2025-11-18T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1039065/000110465925113487/0001104659-25-113487-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1039065/000110465925113487/tm2531448d2_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-113487
- JSON: https://secwatch.observer/filing/0001104659-25-113487.json
- Plain text: https://secwatch.observer/filing/0001104659-25-113487.txt

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