EX-21.1 5 exhibit21-1.htm EXHIBIT 21.1
Exhibit 21.1
LIST OF SUBSIDIARIES FOR THE REGISTRANT
Akcea Therapeutics, Inc., a Delaware Corporation
Akcea Therapeutics Canada Inc., a Canadian Corporation
Akcea Therapeutics Germany GmbH, a German Corporation
Akcea Therapeutics UK Limited, a United Kingdom Limited Private Company
Akcea Therapeutics Ireland Limited, an Irish Private Company
Akcea Therapeutics Italia S.r.l., an Italian Company
Akcea Therapeutics Portugal, Unipessoal Lda, a Portuguese Company
Ionis Faraday LLC, a Delaware Corporation
Ionis Gazelle LLC, a Delaware Corporation
Ionis Ireland Limited, an Irish Private Company
Ionis USA Limited, a United Kingdom Limited Private Company
Osprey Therapeutics, Inc., a Delaware Corporation
Ionis Development (Ireland) Limited, an Irish Private Company