Common use of PARENT/SUBSIDIARIES OF COMPANY Clause in Contracts

PARENT/SUBSIDIARIES OF COMPANY. a. The legal name of each subsidiary and parent of Company is as follows. (A “parent” is an entity owning more than 50% of the outstanding ownership interest of Company. A “subsidiary” is an entity, 50% or more of the outstanding ownership interest of which is owned by Company. Name Jurisdiction Date of Formation Subsidiary /Parent Fed. Employer ID No. Syndax Limited United Kingdom April 19, 2011 Subsidiary Syndax Securities Corporation Massachusetts December 17, 2014 Subsidiary

PARENT/SUBSIDIARIES OF COMPANY. a. The legal name of each subsidiary and parent of Company is as follows. (A “parent” is an entity directly owning more than 50% of the outstanding ownership interest capital stock of Company. A “subsidiary” is an entity, 50% or more of the outstanding ownership interest capital stock of which is directly owned by Company. .) Name Jurisdiction Date of Formation Subsidiary /Parent Subsidiary/Parent Fed. Employer ID No. Syndax Limited United Kingdom April 19, 2011 Subsidiary Syndax Securities Corporation Massachusetts December 17, 2014 SubsidiaryDiscovery Energy SA Pty Ltd Sub x Parent ¨ None (Australian entity)

PARENT/SUBSIDIARIES OF COMPANY. a. The legal name of each subsidiary and parent of Company is as follows. (A “parent” is an entity owning more than 50% of the outstanding ownership interest capital stock of Company. A “subsidiary” is an entity, 50% or more of the outstanding ownership interest capital stock of which is owned by Company. Subsidiary Fed. Name Jurisdiction Date of Formation Subsidiary /Parent Fed. Employer ID No. Syndax Limited United Kingdom April 19, 2011 Subsidiary Syndax Securities Corporation Massachusetts December 17, 2014 Subsidiary.