44 : Guident Technologies Inc.
| Location: | Herndon, Va. |
| Annual growth rate: | 68.04% |
| 2009 revenue: | $39,771,415.00 |
| 2008 revenue: | $30,738,922.00 |
| 2007 revenue: | $13,208,714.00 |
| 2006 revenue: | $7,355,911.00 |
| 2005 revenue: | $4,987,657.00 |
| Leadership: | Dan Ackerman, executive vice president and partner |
| Web site: | http://www.guident.com |