| Date | Name | Title | Type | Security | Shares | Price | Value | Ownership | Reported |
| 02/17/2006 | Joseph David Samuel | Director | Disposition | Director Stock Option (Right to Buy) | 20k | $2.25 | $45k | | 02/17/2006 |
| 02/17/2006 | Joseph David Samuel | Director | Disposition | Director Stock Option (Right to Buy) | 6.5k | $15.00 | $98.1k | | 02/17/2006 |
| 02/17/2006 | Joseph David Samuel | Director | Disposition | Director Stock Option (Right to Buy) | 11.9k | $17.71 | $210.3k | | 02/17/2006 |
| 02/17/2006 | Schumer Douglas | VP, Engineering | Disposition | Common Stock | 234 | $24.50 | $5.7k | | 02/17/2006 |
| 02/17/2006 | Schumer Douglas | VP, Engineering | Disposition | Employee Stock Option (Right to Buy) | 14.8k | $20.21 | $300k | | 02/17/2006 |
| 02/17/2006 | Schumer Douglas | VP, Engineering | Disposition | Employee Stock Option (Right to Buy) | 20.2k | $20.21 | $407.4k | | 02/17/2006 |
| 02/17/2006 | Sunday Daniel C | VP, Operations | Disposition | Common Stock | 111 | $24.50 | $2.7k | | 02/17/2006 |
| 02/17/2006 | Sunday Daniel C | VP, Operations | Disposition | Employee Stock Option (Right to Buy) | 16k | $4.69 | $75k | | 02/17/2006 |
| 02/17/2006 | Sunday Daniel C | VP, Operations | Disposition | Employee Stock Option (Right to Buy) | 1.3k | $9.38 | $12.5k | | 02/17/2006 |
| 02/17/2006 | Sunday Daniel C | VP, Operations | Disposition | Employee Stock Option (Right to Buy) | 23k | $19.50 | $448.5k | | 02/17/2006 |
| 02/17/2006 | WOODRUFF DOUGLAS W | VP Qual. Assurance&Reg.Affairs | Disposition | Common Stock | 230 | $24.50 | $5.6k | | 02/17/2006 |
| 02/17/2006 | WOODRUFF DOUGLAS W | VP Qual. Assurance&Reg.Affairs | Disposition | Employee Stock Option (Right to Buy) | 14.8k | $15.63 | $231.5k | | 02/17/2006 |
| 02/17/2006 | WOODRUFF DOUGLAS W | VP Qual. Assurance&Reg.Affairs | Disposition | Employee Stock Option (Right to Buy) | 19.2k | $15.63 | $300k | | 02/17/2006 |
| 02/17/2006 | FINKELSTEIN AUDREY | EVP Marketing Sales & Clinical | Disposition | Employee Stock Option (Right to Buy) | 26.7k | $7.50 | $200k | | 02/17/2006 |
| 02/17/2006 | FINKELSTEIN AUDREY | EVP Marketing Sales & Clinical | Disposition | Employee Stock Option (Right to Buy) | 10k | $9.38 | $93.8k | | 02/17/2006 |
| 02/17/2006 | FINKELSTEIN AUDREY | EVP Marketing Sales & Clinical | Disposition | Employee Stock Option (Right to Buy) | 40k | $15.00 | $600k | | 02/17/2006 |
| 02/17/2006 | FINKELSTEIN AUDREY | EVP Marketing Sales & Clinical | Disposition | Employee Stock Option (Right to Buy) | 34.8k | $15.63 | $544k | | 02/17/2006 |
| 02/17/2006 | FINKELSTEIN AUDREY | EVP Marketing Sales & Clinical | Disposition | Employee Stock Option (Right to Buy) | 5.2k | $15.63 | $81.2k | | 02/17/2006 |
| 02/17/2006 | CAHILL EDWARD L | Director | Disposition | Director Stock Option (Right to Buy) | 13.3k | $9.38 | $125.1k | | 02/17/2006 |
| 02/17/2006 | CAHILL EDWARD L | Director | Disposition | Director Stock Option (Right to Buy) | 10.7k | $15.00 | $160k | | 02/17/2006 |
| 02/17/2006 | CAHILL EDWARD L | Director | Disposition | Director Stock Option (Right to Buy) | 5.9k | $15.00 | $88.8k | | 02/17/2006 |
| 02/17/2006 | CROTHALL GRAEME A | 10% Owner | Disposition | Employee Stock Option (Right to Buy) | 166.7k | $9.38 | $1.6M | By Spouse | 02/17/2006 |
| 02/17/2006 | CROTHALL GRAEME A | 10% Owner | Disposition | Employee Stock Option (Right to Buy) | 13.3k | $9.38 | $125.1k | By Spouse | 02/17/2006 |
| 02/17/2006 | MCDONOUGH JOHN JAMES | Director | Disposition | Director Stock Option (Right to Buy) | 13.3k | $9.38 | $125.1k | | 02/17/2006 |
| 02/17/2006 | MCDONOUGH JOHN JAMES | Director | Disposition | Director Stock Option (Right to Buy) | 10.7k | $15.00 | $160k | | 02/17/2006 |
| 02/17/2006 | MCDONOUGH JOHN JAMES | Director | Disposition | Director Stock Option (Right to Buy) | 7.3k | $15.00 | $109.4k | | 02/17/2006 |
| 02/17/2006 | MCDONOUGH JOHN JAMES | Director | Disposition | Director Stock Option (Right to Buy) | 12.6k | $17.71 | $223.6k | | 02/17/2006 |
| 02/17/2006 | MCGEE JAMES E | EVP, Patient Services | Disposition | Common Stock | 2k | $24.50 | $50k | | 02/17/2006 |
| 02/17/2006 | MCGEE JAMES E | EVP, Patient Services | Disposition | Employee Stock Option (Right to Buy) | 53.3k | $9.38 | $500.3k | | 02/17/2006 |
| 02/17/2006 | MCGEE JAMES E | EVP, Patient Services | Disposition | Employee Stock Option (Right to Buy) | 25k | $15.63 | $390.8k | | 02/17/2006 |
| 02/17/2006 | MCGEE JAMES E | EVP, Patient Services | Disposition | Employee Stock Option (Right to Buy) | 24k | $19.50 | $468k | | 02/17/2006 |
| 02/17/2006 | PARSONS A PETER | Director | Disposition | Common Stock | 4.8k | $24.50 | $117.6k | | 02/17/2006 |
| 02/17/2006 | PARSONS A PETER | Director | Disposition | Common Stock | 13.5k | $24.50 | $330.5k | By 401(k) Plan | 02/17/2006 |
| 02/17/2006 | PARSONS A PETER | Director | Disposition | Director Stock Option (Right to Buy) | 10.7k | $15.00 | $160k | | 02/17/2006 |
| 02/17/2006 | PARSONS A PETER | Director | Disposition | Director Stock Option (Right to Buy) | 6.2k | $15.00 | $92.5k | | 02/17/2006 |
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