 | Microsoft | MSFT
| $60,420,000,000 | 91,000 | 25 | | |
 | Merit Medical Systems, Inc | MMSI
| $190,700,000 | 1,519 | | | |
 | Myriad Genetics, Inc | MYGN
| $157,100,000 | 950 | 700 | | |
 | Marchex, Inc | MCHX
| $127,760,000 | 300 | 175 | | |
 | MKS, Inc. | MKX
| $48,320,000 | 246 | | | |
 | Moxtek, Inc | | $45,000,000 | 125 | 125 | | |
 | MediConnect Global | | $35,600,000 | 125 | 125 | | |
 | MasterControl Inc. | | $15,000,000 | 125 | 95 | | |
| Link | Making Memories | | $15,000,000 | 100 | 100 | $10,500,000 | |
 | Mindshare Technologies | | $7,100,000 | 30 | 30 | | |
| Link | Mainstream Data, Inc | | $7,000,000 | 25 | 25 | | |
| Link | Matrix Communications | | $1,674,910 | 11 | 11 | | |
| Link | Matchbin | | $1,500,000 | 20 | 20 | | |
| Link | MSTAR.NET, LLC | | $1,250,000 | 50 | 50 | | |
| Link | MIPSolutions, Inc. | | $300,000 | 0 | 5 | | |
| Link | M-Biotech, Inc. | | $200,000 | 0 | 5 | | |
| Link | Media Forge, Inc. | | $100,000 | 0 | 0 | | |
| Link | Messaging Architects | | | 100 | 22 | | |
| Link | Management Plus / The Hoehne Group | | | 0 | 0 | | |
| Link | Medical Priority Consultants | | | 50 | 50 | | |
 | Medicity, Inc | | | 120 | 85 | | |
 | MeetingUniverse.com | | | 4 | | | |
| Link | Meosphere | | | 0 | 0 | | |
 | Merck & Co., Inc. | MRK
| | 60,000 | | | |
| Link | Merit Sensor Systems | | | 0 | 0 | | |
| Link | Messaging Architects | | | 0 | 0 | | |
 | Micron Technology, Inc. - | | | 25 | 25 | | |
| Link | Mobile Productivity | | | 100 | 25 | | |
| Link | Move Networks | | | | | $60,000,000 | |
| Link | Mozy | | | 0 | 1 | $1,920,000 | |
| Link | MultiTarget Pharmeceuticals LLC | | | 0 | 0 | | |
| Link | MyEbiz | | | 0 | 0 | | |
| Link | Metro Ready Mix, LLC | | | 42 | 42 | $500,000 | |
| Link | Metro Waste | | | 30 | 30 | $2,750,000 | |
| Link | mediaFORGE | | | | | $1,500,000 | |
| Link | Mozenda | | | | 9 | | |
|
