1.
Alucent Medical
2014
2.
Alvos Therapeutic
2009
3.
ALX Oncology
2015
4.
Alzheimer's Research & Therapy
5.
Alzprotect
2007
6.
AMAG Pharmaceuticals
1981
7.
Amal Therapeutics
8.
Amarantus BioSciences
2008
9.
Ambest Pharmaceutical (China)
10.
AMBICION
2015
11.
Ambit Biosciences
2000
12.
Ambrx
2003
13.
American Clinical Solutions
2008
14.
AmerisourceBergen Drug Corporation
1978
15.
Amersham Health
1997
16.
Amgen Ventures
2004-01-01
17.
Aminex Therapeutics
2009
18.
Amitech Therapeutic Solutions
19.
Amnis
1999
20.
AMPEL BioSolutions
2013-07-13
21.
Amphastar Pharmaceuticals
1996
22.
Amphora Discovery
2001-01-01
23.
AmpliPhi Biosciences
1989
24.
Amplyx Pharmaceuticals
2006
25.
Amunix
2006