| Company | Location |
|---|---|
| ARCH Venture Partners | Chicago, Illinois, United States |
| Ardesta LLC | Ann Arbor, Michigan, United States |
| Arete Corp. | Center Harbor, New Hampshire, United States |
| Argonaut Technologies | Foster City, California, United States |
| Argonide Corp. | Sanford, Florida, United States |
| Argonne National Laboratory | Argonne, Illinois, United States |
| Argus Group | Chesterfield, Michigan, United States |
| ARIAD Pharmaceuticals Inc. | Cambridge, Massachusetts, United States |
| Arizona Technology Enterprises | Scottsdale, Arizona, United States |
| Ark Venture Partners | Palo Alto, California, United States |
