---
schema_version: "secwatch.filing_event.v1"
accession: "0001599298-26-000052"
form_type: "8-K"
ticker: "SMMT"
cik: "0001599298"
company_name: "Summit Therapeutics Inc."
filed_at: "2026-06-11T11:44:02+00:00"
generated_at: "2026-06-11T11:45:08.506455+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Summit Therapeutics withdraws proposed public offering due to market conditions

## Summary
- Effective June 10, 2026, Summit Therapeutics withdrew its previously announced proposed underwritten public offering of securities.
- The withdrawal was due to market conditions; no securities were sold in the offering.
- The company had not yet priced or completed the offering before termination.

## SEC filing metadata
- accession: 0001599298-26-000052
- form_type: 8-K
- ticker: SMMT
- cik: 0001599298
- company_name: Summit Therapeutics Inc.
- filed_at: 2026-06-11T11:44:02+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 7.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1599298/000159929826000052/0001599298-26-000052-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1599298/000159929826000052/smmt-20260610.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001599298-26-000052
- JSON: https://secwatch.observer/filing/0001599298-26-000052.json
- Plain text: https://secwatch.observer/filing/0001599298-26-000052.txt

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