EX-21.1 3 sesn-12312020x10kex211.htm EX-21.1 Document
                    

Exhibit 21.1
Subsidiaries of Sesen Bio, Inc.
SubsidiaryJurisdiction of Incorporation
Viventia Bio Inc.Province of Ontario, Canada
Viventia Bio USA Inc.
Province of Ontario, Canada
Viventia Biotech (EU) LimitedUnited Kingdom