1. Pivotal Drug Substance
Technologies, Amgen Inc., One Amgen
Center Drive, Thousand Oaks, California 91320, United States
2. Discovery Chemistry,
Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States
3. Syncom BV, Kadijk 3, Groningen 9747 AT, The Netherlands
4. Attribute
Sciences,
Amgen Inc., One Amgen Center Drive, Thousand Oaks, California 91320, United States