---
schema_version: "secwatch.filing_event.v1"
accession: "0001599298-22-000084"
form_type: "8-K"
ticker: "SMMT"
cik: "0001599298"
company_name: "Summit Therapeutics Inc."
filed_at: "2022-07-26T23:59:59+00:00"
generated_at: "2026-06-24T08:44:54.769556+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Summit Therapeutics appoints Dr. Maky Zanganeh as Co-CEO & President

## Summary
- Dr. Maky Zanganeh appointed Co-CEO & President effective July 25, 2022; formerly COO.
- Bob Duggan remains Chairman of the Board and CEO, co-leading with Zanganeh.
- Zanganeh previously COO at Pharmacyclics; led key deals including $21B sale to AbbVie and $1B ibrutinib collaboration.
- She has been on Summit's board since November 2020 and continues to serve.

## SEC filing metadata
- accession: 0001599298-22-000084
- form_type: 8-K
- ticker: SMMT
- cik: 0001599298
- company_name: Summit Therapeutics Inc.
- filed_at: 2022-07-26T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1599298/000159929822000084/0001599298-22-000084-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1599298/000159929822000084/smmt-20220725.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001599298-22-000084
- JSON: https://secwatch.observer/filing/0001599298-22-000084.json
- Plain text: https://secwatch.observer/filing/0001599298-22-000084.txt

## Key facts
- Executive change
  Dr. Maky Zanganeh was appointed as Co-Chief Executive Officer and President at Summit Therapeutics Inc..
  - Action: appointed
  - Role: Co-Chief Executive Officer and President
  source text: Effective July 25, 2022, the board of directors (the “Board”) of Summit Therapeutics Inc. (the “Company”) appointed Dr. Maky Zanganeh to serve as Co-Chief Executive Officer and President of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1599298/000159929822000084/0001599298-22-000084-index.htm

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