1. AstraZeneca PLC
2. Bavarian Nordic A/S
3. GlaxoSmithKline PLC
4. Inovio Pharmaceuticals Inc.
5. Johnson & Johnson Services Inc.
6. Merck Sharp & Dohme Corp.
7. Mitsubishi Tanabe Pharma Corporation
8. Novavax Inc.
9. Pfizer Inc.
10. Wantai BioPharm
11. Xenetic Bioscience Inc.