---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-138211"
form_type: "8-K"
ticker: "KPTI"
cik: "0001503802"
company_name: "Karyopharm Therapeutics Inc."
filed_at: "2024-05-14T23:59:59+00:00"
generated_at: "2026-06-02T00:45:14.182298+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Karyopharm closes $148M debt exchange for new 6% notes due 2029 and warrants, plus $100M credit facility

## Summary
- Exchanged ~$148M of 3.00% convertible notes due 2025 for $111M of new 6.00% secured convertible notes due 2029.
- Issued warrants to purchase up to ~46M shares of common stock as part of the exchange.
- Entered into a $100M senior secured credit facility, with proceeds used partly to repay HCR facility and for general purposes.
- The exchange extends debt maturity from 2025 to 2029, improving near-term liquidity but increasing interest cost and adding dilution potential.
- New notes are secured and carry a 6% coupon versus the 3% on the exchanged notes.

## SEC filing metadata
- accession: 0001193125-24-138211
- form_type: 8-K
- ticker: KPTI
- cik: 0001503802
- company_name: Karyopharm Therapeutics Inc.
- filed_at: 2024-05-14T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1503802/000119312524138211/0001193125-24-138211-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1503802/000119312524138211/d808759d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-138211
- JSON: https://secwatch.observer/filing/0001193125-24-138211.json
- Plain text: https://secwatch.observer/filing/0001193125-24-138211.txt

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