---
schema_version: "secwatch.filing_event.v1"
accession: "0001503802-26-000011"
form_type: "8-K"
ticker: "KPTI"
cik: "0001503802"
company_name: "Karyopharm Therapeutics Inc."
filed_at: "2026-03-27T23:59:59+00:00"
generated_at: "2026-05-15T08:36:42.443110+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Karyopharm raises ~$50M via private placement and ATM; cash runway into late Q3 2026

## Summary
- Private placement with RA Capital Management closed March 26: 1.03M shares at $6.785, pre-funded warrants for 3.39M shares, and warrants for 4.42M shares at $10.00 exercise.
- Gross proceeds from private placement ~$30M; net proceeds from ATM sales of 2.99M shares ~$19.8M.
- Post-transaction shares outstanding 22.54M plus pre-funded warrants for 4.01M shares.
- Management expects existing liquidity, net product revenue, and license revenue to fund operations into late Q3 2026.

## SEC filing metadata
- accession: 0001503802-26-000011
- form_type: 8-K
- ticker: KPTI
- cik: 0001503802
- company_name: Karyopharm Therapeutics Inc.
- filed_at: 2026-03-27T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1503802/000150380226000011/0001503802-26-000011-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1503802/000150380226000011/kpti-20260327.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001503802-26-000011
- JSON: https://secwatch.observer/filing/0001503802-26-000011.json
- Plain text: https://secwatch.observer/filing/0001503802-26-000011.txt

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