EX-21.1 4 sum-ex211_20251231xxsubsid.htm EX-21.1
Exhibit 21.1
SUBSIDIARIES OF THE REGISTRANT

Name of Subsidiary |  | Jurisdiction of incorporation or organization
Summit Therapeutics Sub Inc. |  | Delaware, USA
Summit International Holdings Limited (Cayman Islands) |  | Cayman Islands
Summit Therapeutics Global LLC |  | Delaware, USA
Summit (Oxford) Limited |  | England and Wales
Summit Therapeutics Limited |  | England and Wales
Discuva Limited |  | England and Wales
Summit Therapeutics Swiss STS GmbH |  | Switzerland
Summit Therapeutics Ireland Limited |  | Ireland