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"Insiders might sell their shares for any number of reasons, but they buy them for only one:
they think the price will rise" - Peter Lynch ==>> What is insider trading>> |

| Transaction & Date | Reported Date |
Company | Symbol | Insider Relationship |
Shares Traded | Average Price | Total Amount |
Shares Ownership |
Filing |
| 2008-11-10 Sale |
2008-11-12 2:59 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 5,352 | $25.98 | $139,045 | 10,316 (Direct) | View |
| 2008-11-07 Sale |
2008-11-10 11:36 am | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 300 | $25.98 | $7,794 | 10,316 (Direct) |
View |
| 2008-10-30 Sale |
2008-11-03 4:11 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 10,000 | $22.72 | $227,190 | 10,316 (Direct) |
View |
| 2006-05-26 Sale |
2006-05-26 4:06 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 2,000 | $24 | $48,000 | 5,811 (Direct) |
View |
| 2005-11-11 Sale | 2005-11-14 2:17 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 7,000 | $22 | $154,000 | 4,193 (Direct) | View |
| 2005-11-01 Sale | 2005-11-02 2:16 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 5,000 | $20.05 | $100,250 | 4,193 (Direct) |
View |
| 2005-07-14 Sale |
2005-07-15 08:48 am | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 10,000 | $16 | $160,000 | 4,193 (Direct) | View |
| Transaction & Date | Reported Date | Company | Symbol | Insider Relationship |
Shares Traded |
Average Price | Total Amount |
Shares Ownership | Filing |
| 2008-11-10 Exercise | 2008-11-12 2:59 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 5,352 | $10.35 | $55,393 | 15,668 (Direct) |
View |
| 2008-11-07 Exercise | 2008-11-10 11:36 am | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 300 | $10.35 | $3,105 | 10,616 (Direct) |
View |
| 2008-10-30 Exercise | 2008-11-03 4:11 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 10,000 | $10.35 | $103,500 | 20,316 (Direct) |
View |
| 2008-06-30 Other |
2008-07-01 4:59 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 865 | $15.41 | $13,332 | 10,316 (Direct) |
View |
| 2008-03-31 Other |
2008-04-02 11:11 am |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 489 | $18.42 | $9,007 | 9,451 (Direct) |
View |
| 2007-12-31 Other |
2008-01-07 11:01 am |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 502 | $17.14 | $8,607 | 8,962 (Direct) |
View |
| 2007-09-28 Other | 2007-10-02 5:38 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 77 | $21.13 | $1,627 | 8,460 (Direct) |
View |
| 2007-06-29- -2007-07-02 Other |
2007-07-03 5:30 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 996 | $15.27 | $15,214 | 8,383 (Direct) | View |
| 2007-03-30 Other |
2007-04-03 5:05 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 268 | $22.07 | $5,915 | 7,387 (Direct) | View |
| 2007-01-03 Other | 2007-01-05 4:36 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 82 | $15.39 | $1,262 | 7,119 (Direct) | View |
| 2006-09-29 Other |
2006-10-03 2:11 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 59 | $21.74 | $1,283 | 7,037 (Direct) |
View |
| 2006-07-05 Other |
2006-07-06 5:17 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 1,167 | $18.8 | $21,938 | 6,978 (Direct) | View |
| 2006-05-26 Exercise | 2006-05-26 4:06 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 2,000 | $13.25 | $26,500 | 7,811 (Direct) | View |
| 2006-04-06 Other | 2006-04-10 5:17 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 269 | $22.97 | $6,179 | 5,811 (Direct) | View |
| 2006-04-06 Other | 2006-04-10 5:15 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 269 | $22.97 | $6,179 | 5,811 (Direct) | View |
| 2006-01-03 Other |
2006-01-10 5:02 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 904 | $11.21 | $10,135 | 5,097 (Direct) |
View |
| 2006-01-03 Other |
2006-01-05 5:08 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 904 | $11.21 | $10,135 | 5,097 (Direct) |
View |
| 2005-11-11 Exercise | 2005-11-14 2:17 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 7,000 | $13.25 | $92,750 | 11,193 (Direct) |
View |
| 2005-11-01 Exercise | 2005-11-02 2:16 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 5,000 | $13.25 | $66,250 | 9,193 (Direct) |
View |
| 2005-07-14 Exercise | 2005-07-15 08:48 am | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 10,000 | $13.25 | $132,500 | 14,193 (Direct) | View |
| 2005-07-01 Other | 2005-07-05 4:16 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 1,012 | $9.894 | $10,013 | 4,193 (Direct) |
View |
| 2005-01-11 Other | 2005-01-13 4:18 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 697 | $11.83 | $8,246 | 3,181 (Direct) |
View |
| 2005-01-06 Other |
2005-01-10 4:03 pm |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 1,045 | $9.21 | $9,624 | 2,484 (Direct) | View |
| 2004-06-30 Other | 2004-07-26 1:40 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 1,020 | $9.44 | $9,629 | 1,439 (Direct) |
View |
| 2004-01-12 Other |
2004-01-13 4:43 pm | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 419 | $0 | $0 | 419 (Direct) |
View |
| Transaction & Date |
Reported Date |
Exercisable Expiration |
Company | Symbol | Insider Relationship |
Shares Traded |
Conversion Price | Shares Ownership |
Filing |
| 2008-11-10 Exercise | 2008-11-12 2:59 pm |
2005-09-14 2015-06-14 | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 5,352 | $10.35 | 44,348 (Direct) | View |
| 2008-11-07 Exercise | 2008-11-10 11:36 am |
2005-09-14 2015-06-14 | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 300 | $10.35 | 49,700 (Direct) | View |
| 2008-10-30 Exercise |
2008-11-03 4:11 pm | 2005-09-14 2015-06-14 |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 10,000 | $10.35 | 50,000 (Direct) | View |
| 2008-05-19 Option Award | 2008-05-21 5:30 pm | N/A 2018-05-19 |
EPIX Pharmaceuticals, Inc. | EPIX | PEREZ ROBERT J (Director) | 10,000 | $1.9 | 10,000 (Direct) |
View |
| 2008-02-15 Option Award | 2008-02-19 5:44 pm |
2008-05-15 2018-02-15 |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 40,000 | $18.1 | 40,000 (Direct) | View |
| 2007-09-14 Option Award |
2007-09-18 4:03 pm | 2007-12-14 2017-09-14 |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Executive Vice President) | 50,000 | $21.91 | 50,000 (Direct) |
View |
| 2007-08-15 Option Award | 2007-08-24 11:35 am | 2007-11-15 2017-08-15 |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 25,000 | $23.12 | 25,000 (Direct) | View |
| 2007-06-27 Option Award | 2007-07-02 10:24 am | N/A 2017-06-27 | EPIX Pharmaceuticals, Inc. | EPIX | PEREZ ROBERT J (Director) | 25,000 | $5.2 | 25,000 (Direct) | View |
| 2007-02-15 Option Award | 2007-02-16 1:57 pm |
2007-05-15 2017-02-15 | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 30,000 | $19.51 | 30,000 (Direct) | View |
| 2006-08-15 Option Award |
2006-08-17 4:23 pm | 2007-08-15 2016-08-15 | EPIX Pharmaceuticals, Inc. | EPIX | PEREZ ROBERT J (Director) | 5,555 | $7.21 | 5,555 (Direct) |
View |
| 2006-06-16 Option Award | 2006-06-20 2:01 pm |
2006-09-16 2016-06-16 |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 20,000 | $22.14 | 20,000 (Direct) | View |
| 2006-05-26 Exercise | 2006-05-26 4:06 pm | 2003-12-02 2013-09-02 |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 2,000 | $13.25 | 56,000 (Direct) | View |
| 2006-01-31 Option Award |
2006-02-02 4:15 pm | 2006-04-30 2016-01-31 | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 40,000 | $21.61 | 40,000 (Direct) | View |
| 2005-11-11 Exercise | 2005-11-14 2:17 pm |
2003-12-02 2013-09-02 |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 7,000 | $13.25 | 58,000 (Direct) |
View |
| 2005-11-01 Exercise |
2005-11-02 2:16 pm |
2003-12-02 2013-09-02 | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 5,000 | $13.25 | 65,000 (Direct) |
View |
| 2005-07-14 Exercise |
2005-07-15 08:48 am |
2003-12-02 2013-09-02 | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 10,000 | $13.25 | 70,000 (Direct) |
View |
| 2005-06-14 Option Award |
2005-06-15 4:02 pm |
2005-09-14 2015-06-14 | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 60,000 | $10.35 | 60,000 (Direct) |
View |
| 2005-02-14 Option Award | 2005-02-15 4:10 pm |
2005-05-14 2015-02-14 |
CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 30,000 | $10.87 | 30,000 (Direct) | View |
| 2004-07-01 Option Award |
2004-07-02 12:38 pm | 2004-10-01 2014-07-01 | CUBIST PHARMACEUTICALS INC | CBST | PEREZ ROBERT J (Senior Vice President) | 40,000 | $10.84 | 40,000 (Direct) |
View |
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