Name of Subsidiary | Jurisdiction of Incorporation or Organization | Percent of Outstanding Voting Securities Owned as of December 31, 2020 | |||||||||||||||
Genomic Health, Inc. | Delaware | 100 | % | ||||||||||||||
Genomic Health International Holdings, LLC | Delaware | 100 | % | ||||||||||||||
Exact Sciences Development Company, LLC | Delaware | 100 | % | ||||||||||||||
Exact Sciences Laboratories LLC | Delaware | 100 | % |