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Form 4 Filings | Insider Buys | Significant Buys |
Penny Stocks Insider Buying |
Insider Sales |
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Insider Watch |
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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 |
| 2008-09-09 Sale |
2008-09-11 4:14 pm | REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $5.05 | $25,250 | 436,500 (Direct) | View |
| 2008-03-04 Sale | 2008-03-06 4:30 pm |
REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 5,000 | $5.415 | $27,077 | 39,834 (Indirect) |
View |
| 2008-02-20 Sale | 2008-02-22 3:45 pm | REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 2,200 | $5.801 | $12,762 | 38,300 (Direct) | View |
| 2008-02-14- -2008-02-19 Sale |
2008-02-19 4:59 pm |
REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 14,334 | $6.282 | $90,045 | 85,334 (Direct) | View |
| 2007-12-13 Sale(A) | 2007-12-19 2:09 pm |
REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 50,000 | $6.128 | $306,378 | 452,203 (Direct) |
View |
| 2007-12-13 Sale(A) |
2007-12-19 2:08 pm | REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 17,643 | $6.138 | $108,291 | 95,874 (Direct) |
View |
| 2007-12-13 Sale |
2007-12-14 3:36 pm | REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 2,600 | $6.1 | $15,860 | 452,203 (Direct) | View |
| 2007-12-13 Sale | 2007-12-14 3:22 pm | REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 20,000 | $6.139 | $122,787 | 0 (Direct) |
View |
| 2007-06-19 Sale | 2007-06-20 4:39 pm | REPLIGEN CORP | RGEN | LANDY HAL (Vice President) | 30,000 | $3.82 | $114,600 | 0 (Direct) |
View |
| 2007-06-14 Sale | 2007-06-18 5:04 pm | REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $3.9 | $19,500 | 436,500 (Direct) | View |
| 2007-06-14 Sale | 2007-06-18 4:48 pm |
REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 7,444 | $3.901 | $29,036 | 0 (Indirect) |
View |
| 2007-03-08 Sale |
2007-03-12 4:42 pm |
REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 25,000 | $3.167 | $79,169 | 241,668 (Direct) |
View |
| 2007-03-05 Sale | 2007-03-07 4:45 pm |
REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 10,000 | $3.05 | $30,500 | 87,874 (Direct) | View |
| 2007-02-28 Sale |
2007-03-02 12:13 pm | REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 20,000 | $3.103 | $62,063 | 89,668 (Direct) |
View |
| 2006-12-05 Sale |
2006-12-06 4:29 pm | REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 8,000 | $2.85 | $22,800 | 7,444 (Indirect) |
View |
| 2006-09-06 Sale | 2006-09-08 3:35 pm | REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $3.38 | $16,900 | 436,500 (Direct) | View |
| 2006-09-01 Purchase | 2006-09-05 1:46 pm |
REPLIGEN CORP | RGEN | DAWES KAREN A (Director) | 2,000 | $3.33 | $6,660 | 2,000 (Direct) | View |
| 2005-12-27- -2006-01-24 Sale |
2006-01-27 5:05 pm |
REPLIGEN CORP | RGEN | DAY BARBARA BURNIM (Former Vice President) | 14,500 | $3.814 | $55,300 | 2,000 (Direct) |
View |
| Transaction & Date |
Reported Date | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Ownership |
Filing |
| 2007-12-13 Sale(A) |
2007-12-19 2:08 pm | REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 2,357 | $6.15 | $14,496 | 112,617 (Direct) | View |
| Transaction & Date | Reported Date | Company | Symbol | Insider Relationship | Shares Traded |
Average Price |
Total Amount | Shares Ownership | Filing |
| 2008-09-09 Exercise | 2008-09-11 4:14 pm |
REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $1.28 | $6,400 | 441,500 (Direct) |
View |
| 2008-03-31 Option Award | 2008-04-02 5:24 pm | REPLIGEN CORP | RGEN | Kelly William J (Vice President) | 5,000 | $0.01 | $50 | 5,000 (Direct) | View |
| 2008-02-20 Other |
2008-02-22 3:45 pm | REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 44,834 | $0 | $0 | 44,834 (Indirect) | View |
| 2008-02-14 Exercise |
2008-02-19 4:59 pm |
REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 10,000 | $1.41 | $14,100 | 99,668 (Direct) |
View |
| 2007-12-13 Option Sale |
2007-12-14 3:36 pm |
REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 47,400 | $6.129 | $290,518 | 454,803 (Direct) |
View |
| 2007-12-13 Exercise | 2007-12-14 3:22 pm | REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 30,000 | $1.41 | $42,300 | 115,874 (Direct) |
View |
| 2007-09-20 Exercise Tax Withholding | 2007-09-24 11:47 am |
REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 208,742 | $2.111 | $440,704 | 502,203 (Direct) |
View |
| 2007-07-13 Exercise Tax Withholding | 2007-07-16 5:00 pm | REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 330,723 | $2.078 | $687,299 | 398,391 (Direct) |
View |
| 2007-06-26 Gift |
2007-06-27 2:57 pm |
REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 24,000 | $0 | $0 | 27,000 (Direct Indirect) | View |
| 2007-06-19 Exercise | 2007-06-20 4:39 pm | REPLIGEN CORP | RGEN | LANDY HAL (Vice President) | 40,000 | $2.745 | $109,800 | 10,000 (Direct) |
View |
| 2007-06-14 Exercise | 2007-06-18 5:04 pm | REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $1 | $5,000 | 441,500 (Direct) |
View |
| 2007-06-14 Exercise | 2007-06-18 5:01 pm | REPLIGEN CORP | RGEN | SCHIMMEL PAUL (Director) | 5,000 | $1 | $5,000 | 665,106 (Direct) |
View |
| 2007-03-07 Exercise | 2007-03-07 4:45 pm | REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 20,000 | $1.5 | $30,000 | 107,874 (Direct) | View |
| 2007-02-28 Exercise |
2007-03-02 12:13 pm | REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 20,000 | $1.5 | $30,000 | 109,668 (Direct) |
View |
| 2007-02-16 Gift |
2007-02-20 10:48 am |
REPLIGEN CORP | RGEN | SCHIMMEL PAUL (Director) | 3,000 | $0 | $0 | 660,106 (Direct) | View |
| 2007-02-14 Exercise |
2007-02-15 12:54 pm | REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 50,000 | $1.5 | $75,000 | 266,668 (Direct) | View |
| 2006-09-06 Gift | 2006-12-06 4:29 pm |
REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 32,000 | $0 | $0 | 21,000 (Direct Indirect) | View |
| 2006-09-06 Exercise | 2006-09-08 3:35 pm | REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $0.88 | $4,400 | 441,500 (Direct) | View |
| 2005-12-27- -2006-01-24 Exercise |
2006-01-27 5:05 pm |
REPLIGEN CORP | RGEN | DAY BARBARA BURNIM (Former Vice President) | 14,500 | $2.894 | $41,960 | 5,900 (Direct) | View |
| 2006-01-19 Option Award | 2006-01-20 4:23 pm |
REPLIGEN CORP | RGEN | MUEHL DANIEL W (CFO) | 10,000 | $0 | $0 | 10,000 (Direct) | View |
| Transaction & Date |
Reported Date |
Exercisable Expiration | Company | Symbol | Insider Relationship | Shares Traded |
Conversion Price |
Shares Ownership | Filing |
| 2008-09-09 Exercise |
2008-09-11 4:14 pm |
2003-09-10 2008-09-10 | REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $1.28 | 95,000 (Direct) |
View |
| 2008-07-01 Option Award | 2008-07-02 11:40 am |
2009-07-01 2018-07-01 |
REPLIGEN CORP | RGEN | Goldberg Alfred Lewis (Director) | 24,000 | $4.77 | 24,000 (Direct) |
View |
| 2008-03-31 Option Award |
2008-04-02 5:24 pm |
N/A 2018-03-31 | REPLIGEN CORP | RGEN | Kelly William J (Vice President) | 100,000 | $4.82 | 100,000 (Direct) | View |
| 2008-02-14 Exercise | 2008-02-19 4:59 pm |
N/A 2008-04-29 |
REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 10,000 | $1.41 | 0 (Direct) |
View |
| 2007-12-12 Option Award |
2007-12-21 1:28 pm |
2008-12-12 2017-12-12 |
REPLIGEN CORP | RGEN | Henry Earl Webb (Director) | 24,000 | $6.06 | 24,000 (Direct) | View |
| 2007-12-13 Exercise | 2007-12-19 2:08 pm | N/A 2008-04-29 |
REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 30,000 | $1.41 | 0 (Direct) | View |
| 2007-09-20 Exercise | 2007-09-24 11:47 am | 1999-04-29 2008-04-29 | REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 156,277 | $1.41 | 0 (Direct) | View |
| 2007-09-14 Option Award | 2007-09-17 1:07 pm |
2008-09-14 2017-09-14 | REPLIGEN CORP | RGEN | DAWES KAREN A (Director) | 20,000 | $4.29 | 20,000 (Direct) | View |
| 2007-09-14 Option Award |
2007-09-17 1:07 pm | 2008-09-14 2017-09-14 | REPLIGEN CORP | RGEN | RYAN THOMAS F JR (Director) | 20,000 | $4.29 | 20,000 (Direct) | View |
| 2007-09-14 Option Award |
2007-09-17 1:06 pm | 2008-09-14 2017-09-14 |
REPLIGEN CORP | RGEN | HENNESSEY ROBERT J (Director) | 20,000 | $4.29 | 20,000 (Direct) | View |
| 2007-07-13 Exercise |
2007-07-16 5:00 pm | 1999-04-29 2008-04-29 | REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 243,723 | $1.41 | 156,277 (Direct) | View |
| 2007-06-19 Exercise |
2007-06-20 4:39 pm |
2005-04-30 2015-05-13 | REPLIGEN CORP | RGEN | LANDY HAL (Vice President) | 30,000 | $3.05 | 0 (Direct) | View |
| 2007-06-19 Exercise | 2007-06-20 4:39 pm |
2006-05-13 2015-05-13 |
REPLIGEN CORP | RGEN | LANDY HAL (Vice President) | 10,000 | $1.83 | 10,000 (Direct) | View |
| 2007-06-14 Exercise |
2007-06-18 5:04 pm |
1998-07-24 2007-07-24 |
REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $1 | 0 (Direct) |
View |
| 2007-06-14 Exercise |
2007-06-18 5:01 pm | 1998-07-24 2007-07-24 | REPLIGEN CORP | RGEN | SCHIMMEL PAUL (Director) | 5,000 | $1 | 5,000 (Direct) | View |
| 2007-05-10 Option Award |
2007-05-29 3:57 pm |
2008-05-10 2017-05-10 |
REPLIGEN CORP | RGEN | Whitehouse Laura (Vice President) | 50,000 | $3.48 | 50,000 (Direct) |
View |
| 2007-03-07 Exercise |
2007-03-07 4:45 pm |
1998-04-30 2007-04-30 | REPLIGEN CORP | RGEN | RUSCHE JAMES R (Senior Vice President) | 20,000 | $1.5 | 20,000 (Direct) | View |
| 2007-02-28 Exercise | 2007-03-02 12:13 pm |
1998-04-30 2007-04-30 |
REPLIGEN CORP | RGEN | WITT DANIEL P (Vice President) | 20,000 | $1.5 | 89,668 (Direct) |
View |
| 2007-02-14 Exercise | 2007-02-15 12:54 pm | 1998-04-30 2007-04-30 |
REPLIGEN CORP | RGEN | HERLIHY WALTER C (PRESIDENT, CEO Director) | 50,000 | $1.5 | 50,000 (Direct) |
View |
| 2006-09-15 Option Award |
2006-09-18 10:22 am |
2007-09-15 2016-09-15 | REPLIGEN CORP | RGEN | RYAN THOMAS F JR (Director) | 15,000 | $3.1 | 15,000 (Direct) | View |
| 2006-09-15 Option Award |
2006-09-18 10:19 am |
2007-09-15 2016-09-15 |
REPLIGEN CORP | RGEN | SCHIMMEL PAUL (Director) | 15,000 | $3.1 | 15,000 (Direct) |
View |
| 2006-09-15 Option Award | 2006-09-18 10:19 am |
2007-09-15 2016-09-15 | REPLIGEN CORP | RGEN | DAWES KAREN A (Director) | 15,000 | $3.1 | 15,000 (Direct) | View |
| 2006-09-15 Option Award | 2006-09-18 10:18 am |
2007-09-15 2016-09-15 | REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 15,000 | $3.1 | 15,000 (Direct) | View |
| 2006-09-15 Option Award |
2006-09-18 10:17 am |
2007-09-15 2016-09-15 |
REPLIGEN CORP | RGEN | HENNESSEY ROBERT J (Director) | 15,000 | $3.1 | 15,000 (Direct) | View |
| 2006-09-06 Exercise |
2006-09-08 3:35 pm | 1997-09-10 2006-09-10 |
REPLIGEN CORP | RGEN | RICH ALEXANDER (Director) | 5,000 | $0.88 | 436,500 (Direct) | View |
| 2006-02-27 Option Award |
2006-03-01 2:01 pm | 2007-02-27 2016-02-27 | REPLIGEN CORP | RGEN | MUEHL DANIEL W (CFO) | 120,000 | $4.17 | 120,000 (Direct) | View |
| 2006-02-27 Option Award | 2006-03-01 2:01 pm |
2007-02-27 2016-02-17 |
REPLIGEN CORP | RGEN | Harris Timothy Scott (VP Corporate Development) | 100,000 | $4.17 | 100,000 (Direct) |
View |
| 2005-12-27 Exercise | 2006-01-27 5:05 pm | 2002-04-03 2011-04-03 |
REPLIGEN CORP | RGEN | DAY BARBARA BURNIM (Former Vice President) | 8,000 | $2.66 | 10,000 (Direct) | View |
| 2006-01-19 Exercise | 2006-01-27 5:05 pm |
2005-04-20 2014-04-20 |
REPLIGEN CORP | RGEN | DAY BARBARA BURNIM (Former Vice President) | 2,000 | $3.05 | 4,000 (Direct) |
View |
| 2006-01-20 Exercise | 2006-01-27 5:05 pm |
2003-04-11 2012-04-11 | REPLIGEN CORP | RGEN | DAY BARBARA BURNIM (Former Vice President) | 600 | $3.24 | 2,600 (Direct) | View |
| 2006-01-24 Exercise |
2006-01-27 5:05 pm | 2003-04-11 2012-04-11 | REPLIGEN CORP | RGEN | DAY BARBARA BURNIM (Former Vice President) | 3,900 | $3.24 | 5,900 (Direct) |
View |
| 2004-09-21 Option Award | 2004-09-23 4:07 pm |
2005-09-21 2014-09-21 | REPLIGEN CORP | RGEN | MILLER G WILLIAM (Director) | 15,000 | $1.91 | 0 (Direct) |
View |
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