Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Repligen Corp
since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Repligen Corp since year 2005.
Table 2 shows the detailed insider transactions of Repligen Corp since 2005.
The reporting company's ticker symbol is RGEN. The reporting company's CIK number is 730272.
The total value of stock buying since 2005 is $422,042.
The total value of stock sales since 2005 is $41,169,325.
The total value of stock option exercises since 2005 is $7,517,951.
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2018-06 | 0 | $0 | 1,932 | $85,606 | 0 | $0 |
| 2018-05 | 0 | $0 | 301,599 | $12,474,649 | 47,366 | $737,722 |
| 2018-03 | 0 | $0 | 4,696 | $169,793 | 4,696 | $50,106 |
| 2018-01 | 0 | $0 | 8,970 | $322,444 | 0 | $0 |
| 2017-12 | 0 | $0 | 12,729 | $449,830 | 12,729 | $289,202 |
| 2017-03 | 0 | $0 | 20,646 | $714,913 | 42,968 | $362,375 |
| 2016-11 | 0 | $0 | 5,000 | $165,615 | 0 | $0 |
| 2016-09 | 0 | $0 | 2,700 | $87,979 | 0 | $0 |
| 2016-06 | 0 | $0 | 15,000 | $378,900 | 20,000 | $62,600 |
| 2016-05 | 0 | $0 | 2,889 | $77,199 | 10,000 | $62,300 |
| 2015-11 | 0 | $0 | 0 | $0 | 5,000 | $16,650 |
| 2015-06 | 0 | $0 | 35,000 | $1,334,843 | 0 | $0 |
| 2015-05 | 0 | $0 | 185,000 | $7,101,051 | 0 | $0 |
| 2015-03 | 0 | $0 | 114,676 | $3,753,034 | 13,807 | $152,843 |
| 2014-11 | 0 | $0 | 114,728 | $2,683,065 | 36,000 | $138,780 |
| 2014-08 | 0 | $0 | 40,000 | $813,800 | 5,000 | $16,650 |
| 2014-06 | 0 | $0 | 203,044 | $4,167,034 | 305,786 | $1,416,676 |
| 2014-04 | 35,000 | $106,750 | 0 | $0 | 0 | $0 |
| 2013-08 | 0 | $0 | 30,000 | $300,360 | 50,000 | $293,500 |
| 2013-06 | 1,000 | $7,700 | 0 | $0 | 0 | $0 |
| 2013-05 | 0 | $0 | 170,961 | $1,541,515 | 276,964 | $1,146,688 |
| 2013-03 | 0 | $0 | 0 | $0 | 100,000 | $551,000 |
| 2012-09 | 10,000 | $60,860 | 5,000 | $29,790 | 0 | $0 |
| 2012-08 | 2,000 | $9,752 | 95,000 | $528,580 | 90,000 | $366,750 |
| 2012-03 | 0 | $0 | 0 | $0 | 160,000 | $412,650 |
| 2011-08 | 31,000 | $106,938 | 0 | $0 | 0 | $0 |
| 2011-06 | 9,500 | $33,982 | 0 | $0 | 0 | $0 |
| 2011-03 | 5,000 | $13,300 | 0 | $0 | 0 | $0 |
| 2009-11 | 5,000 | $24,900 | 0 | $0 | 0 | $0 |
| 2009-07 | 0 | $0 | 451,800 | $2,492,112 | 0 | $0 |
| 2008-12 | 2,000 | $7,000 | 0 | $0 | 0 | $0 |
| 2008-09 | 0 | $0 | 5,000 | $25,250 | 5,000 | $6,400 |
| 2008-03 | 0 | $0 | 5,000 | $26,905 | 0 | $0 |
| 2008-02 | 0 | $0 | 16,534 | $102,965 | 10,000 | $14,100 |
| 2007-12 | 0 | $0 | 20,000 | $122,840 | 30,000 | $42,300 |
| 2007-09 | 0 | $0 | 0 | $0 | 156,277 | $220,350 |
| 2007-07 | 0 | $0 | 0 | $0 | 243,723 | $343,649 |
| 2007-06 | 0 | $0 | 42,444 | $163,206 | 50,000 | $107,600 |
| 2007-03 | 0 | $0 | 35,000 | $109,125 | 20,000 | $30,000 |
| 2007-02 | 0 | $0 | 20,000 | $62,100 | 70,000 | $105,000 |
| 2006-12 | 0 | $0 | 8,000 | $22,800 | 0 | $0 |
| 2006-09 | 2,000 | $6,660 | 5,000 | $16,900 | 5,000 | $4,400 |
| 2006-08 | 0 | $0 | 0 | $0 | 15,000 | $13,200 |
| 2006-03 | 0 | $0 | 1,800 | $8,100 | 301,800 | $377,250 |
| 2006-02 | 0 | $0 | 152,200 | $646,233 | 108,200 | $135,250 |
| 2006-01 | 0 | $0 | 6,500 | $27,300 | 6,500 | $20,680 |
| 2005-12 | 8,000 | $23,560 | 8,000 | $28,000 | 8,000 | $21,280 |
| 2005-08 | 0 | $0 | 30,425 | $105,719 | 0 | $0 |
| 2005-07 | 0 | $0 | 10,000 | $29,770 | 0 | $0 |
| 2005-03 | 12,000 | $20,640 | 0 | $0 | 0 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2018-06-06 | Ryan Thomas F Jr | Sale | 1,932 | 44.31 | 85,606 |
| 2018-05-21 | Hunt Anthony (Chief Executive Officer) | Sale | 16,249 | 42.53 | 691,021 |
| 2018-05-16 | Eddleman Roy T (10% Owner) | Sale | 118,850 | 42.07 | 5,000,019 |
| 2018-05-11 | Dawes Karen A | Sale | 20,000 | 41.80 | 835,939 |
| 2018-05-11 | Dawes Karen A | Option Ex | 20,000 | 5.08 | 101,600 |
| 2018-05-09 | Barthelemy Nicolas | Sale | 26,500 | 40.54 | 1,074,230 |
| 2018-05-09 | Barthelemy Nicolas | Option Ex | 27,366 | 23.25 | 636,122 |
| 2018-05-09 | Eddleman Roy T (10% Owner) | Sale | 45,773 | 40.45 | 1,851,288 |
| 2018-05-08 | Eddleman Roy T (10% Owner) | Sale | 74,227 | 40.72 | 3,022,152 |
| 2018-03-08 | Ryan Thomas F Jr | Sale | 4,696 | 36.16 | 169,793 |
| 2018-03-08 | Ryan Thomas F Jr | Option Ex | 4,696 | 10.67 | 50,106 |
| 2018-01-22 | Hunt Anthony (Chief Executive Officer) | Sale | 8,970 | 35.95 | 322,444 |
| 2017-12-14 | Benjamin Howard (VP Business Development) | Sale | 12,729 | 35.34 | 449,830 |
| 2017-12-14 | Benjamin Howard (VP Business Development) | Option Ex | 12,729 | 22.72 | 289,202 |
| 2017-03-21 | Dawes Karen A | Sale | 2,521 | 34.12 | 86,016 |
| 2017-03-21 | Dawes Karen A | Option Ex | 20,000 | 4.29 | 85,800 |
| 2017-03-20 | Benjamin Howard (VP Business Development) | Sale | 12,216 | 34.62 | 422,930 |
| 2017-03-20 | Benjamin Howard (VP Business Development) | Option Ex | 14,968 | 11.07 | 165,695 |
| 2017-03-20 | Ryan Thomas F Jr | Sale | 4,000 | 34.83 | 139,320 |
| 2017-03-20 | Ryan Thomas F Jr | Option Ex | 4,000 | 3.22 | 12,880 |
| 2017-03-17 | Snodgres Jon (Chief Financial Officer) | Sale | 1,909 | 34.91 | 66,647 |
| 2017-03-17 | Snodgres Jon (Chief Financial Officer) | Option Ex | 4,000 | 24.50 | 98,000 |
| 2016-11-28 | Hunt Anthony (Chief Executive Officer) | Sale | 5,000 | 33.12 | 165,615 |
| 2016-09-14 | Ryan Thomas F Jr | Sale | 2,700 | 32.59 | 87,979 |
| 2016-06-30 | Ryan Thomas F Jr | Sale | 5,000 | 26.60 | 133,010 |
| 2016-06-28 | Ryan Thomas F Jr | Sale | 10,000 | 24.59 | 245,890 |
| 2016-06-28 | Ryan Thomas F Jr | Option Ex | 5,000 | 3.22 | 16,100 |
| 2016-06-27 | Dawes Karen A | Option Ex | 15,000 | 3.10 | 46,500 |
| 2016-05-24 | Benjamin Howard | Option Ex | 10,000 | 6.23 | 62,300 |
| 2016-05-11 | Benjamin Howard | Sale | 2,889 | 26.72 | 77,199 |
| 2015-11-19 | Benjamin Howard | Option Ex | 5,000 | 3.33 | 16,650 |
| 2015-06-09 | Benjamin Howard | Sale | 7,697 | 37.48 | 288,483 |
| 2015-06-08 | Benjamin Howard | Sale | 27,303 | 38.32 | 1,046,360 |
| 2015-05-15 | Rusche James R (Senior Vice President) | Sale | 15,000 | 41.32 | 619,830 |
| 2015-05-12 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 45,431 | 38.97 | 1,770,355 |
| 2015-05-11 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 35,715 | 38.68 | 1,381,599 |
| 2015-05-08 | Ryan Thomas F Jr | Sale | 20,000 | 37.19 | 743,800 |
| 2015-05-08 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 68,854 | 37.55 | 2,585,467 |
| 2015-03-23 | Herlihy Walter C (PRESIDENT AND CEO) | Sale | 23,686 | 31.76 | 752,172 |
| 2015-03-20 | Herlihy Walter C (PRESIDENT AND CEO) | Sale | 850 | 32.51 | 27,629 |
| 2015-03-19 | Ryan Thomas F Jr (Director) | Sale | 10,000 | 32.62 | 326,190 |
| 2015-03-19 | Rusche James R (Senior Vice President) | Sale | 14,650 | 33.30 | 487,844 |
| 2015-03-19 | Herlihy Walter C (PRESIDENT AND CEO) | Sale | 49,695 | 33.08 | 1,643,761 |
| 2015-03-18 | Benjamin Howard | Sale | 15,795 | 32.63 | 515,438 |
| 2015-03-18 | Benjamin Howard | Option Ex | 13,807 | 11.07 | 152,843 |
| 2014-11-19 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 4,158 | 22.95 | 95,426 |
| 2014-11-18 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 47,228 | 23.47 | 1,108,441 |
| 2014-11-14 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 10,000 | 3.33 | 33,300 |
| 2014-11-13 | Ryan Thomas F Jr | Sale | 10,000 | 23.81 | 238,100 |
| 2014-11-13 | Ryan Thomas F Jr | Option Ex | 10,000 | 3.30 | 33,000 |
| 2014-11-11 | Benjamin Howard (VP Business Development) | Sale | 30,000 | 23.56 | 706,800 |
| 2014-11-10 | Griffith Michael A | Sale | 23,342 | 22.89 | 534,298 |
| 2014-11-10 | Griffith Michael A | Option Ex | 16,000 | 4.53 | 72,480 |
| 2014-08-13 | Benjamin Howard (VP Business Development) | Sale | 40,000 | 20.34 | 813,800 |
| 2014-08-13 | Benjamin Howard (VP Business Development) | Option Ex | 5,000 | 3.33 | 16,650 |
| 2014-06-27 | Ryan Thomas F Jr | Sale | 10,000 | 22.41 | 224,130 |
| 2014-06-27 | Ryan Thomas F Jr | Option Ex | 10,000 | 4.13 | 41,300 |
| 2014-06-24 | Ryan Thomas F Jr | Sale | 10,000 | 21.78 | 217,780 |
| 2014-06-24 | Ryan Thomas F Jr | Option Ex | 10,000 | 4.96 | 49,600 |
| 2014-06-20 | Witt Daniel P (Senior Vice President) | Option Ex | 87,500 | 4.32 | 377,562 |
| 2014-06-11 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 60,335 | 20.11 | 1,213,578 |
| 2014-06-09 | Rusche James R (Senior Vice President) | Sale | 30,000 | 20.19 | 605,730 |
| 2014-06-06 | Witt Daniel P (Senior Vice President) | Sale | 47,709 | 20.56 | 980,706 |
| 2014-06-06 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 51,250 | 5.14 | 263,578 |
| 2014-06-05 | Benjamin Howard (VP Business Development) | Option Ex | 102,036 | 4.60 | 469,671 |
| 2014-06-05 | Ryan Thomas F Jr | Sale | 45,000 | 20.56 | 925,110 |
| 2014-06-05 | Ryan Thomas F Jr | Option Ex | 45,000 | 4.78 | 214,965 |
| 2014-04-15 | Rusche James R (Senior Vice President) | Buy | 25,000 | 3.05 | 76,250 |
| 2014-04-15 | Witt Daniel P (Senior Vice President) | Buy | 10,000 | 3.05 | 30,500 |
| 2013-08-08 | Rusche James R (Senior Vice President) | Sale | 30,000 | 10.01 | 300,360 |
| 2013-08-07 | Rusche James R (Senior Vice President) | Option Ex | 50,000 | 5.87 | 293,500 |
| 2013-06-21 | Dawes Karen A | Buy | 1,000 | 7.70 | 7,700 |
| 2013-05-17 | Ryan Thomas F Jr | Sale | 17,000 | 8.99 | 152,762 |
| 2013-05-16 | Ryan Thomas F Jr | Sale | 4,000 | 8.95 | 35,800 |
| 2013-05-15 | Ryan Thomas F Jr | Sale | 16,845 | 8.98 | 151,061 |
| 2013-05-15 | Ryan Thomas F Jr | Option Ex | 14,884 | 3.10 | 46,140 |
| 2013-05-15 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 1,514 | 8.85 | 13,398 |
| 2013-05-14 | Ryan Thomas F Jr | Sale | 17,155 | 9.00 | 154,395 |
| 2013-05-14 | Ryan Thomas F Jr | Option Ex | 15,116 | 3.24 | 48,975 |
| 2013-05-14 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 38,486 | 8.98 | 345,450 |
| 2013-05-13 | Ryan Thomas F Jr | Sale | 54,000 | 9.04 | 488,268 |
| 2013-05-13 | Ryan Thomas F Jr | Option Ex | 54,000 | 4.74 | 255,690 |
| 2013-05-07 | Kelly William J (Chief Accounting Officer) | Sale | 20,000 | 9.14 | 182,740 |
| 2013-05-07 | Kelly William J (Chief Accounting Officer) | Option Ex | 20,000 | 4.82 | 96,400 |
| 2013-05-06 | Benjamin Howard (VP Business Development) | Option Ex | 22,964 | 3.79 | 87,033 |
| 2013-05-03 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 150,000 | 4.08 | 612,450 |
| 2013-03-26 | Rusche James R (Senior Vice President) | Option Ex | 25,000 | 5.51 | 137,750 |
| 2013-03-26 | Witt Daniel P (Senior Vice President) | Option Ex | 10,000 | 5.51 | 55,100 |
| 2013-03-26 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 65,000 | 5.51 | 358,150 |
| 2012-09-27 | Rusche James R (Senior Vice President) | Sale | 5,000 | 5.96 | 29,790 |
| 2012-09-21 | Cooper Glenn L Md | Buy | 10,000 | 6.09 | 60,860 |
| 2012-08-31 | Kelly William J (CFO) | Sale | 95,000 | 5.56 | 528,580 |
| 2012-08-31 | Kelly William J (CFO) | Option Ex | 90,000 | 4.08 | 366,750 |
| 2012-08-16 | Griffith Michael A | Buy | 2,000 | 4.88 | 9,752 |
| 2012-03-27 | Rusche James R (Senior Vice President) | Option Ex | 25,000 | 1.83 | 45,750 |
| 2012-03-27 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 50,000 | 1.83 | 91,500 |
| 2012-03-22 | Rusche James R (Senior Vice President) | Option Ex | 25,000 | 3.24 | 81,000 |
| 2012-03-22 | Witt Daniel P (Vice President) | Option Ex | 10,000 | 3.24 | 32,400 |
| 2012-03-15 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 50,000 | 3.24 | 162,000 |
| 2011-08-12 | Dawes Karen A | Buy | 10,000 | 3.50 | 34,950 |
| 2011-08-10 | Goldberg Alfred Lewis | Buy | 21,000 | 3.43 | 71,988 |
| 2011-06-15 | Henry Earl Webb | Buy | 5,000 | 3.60 | 17,980 |
| 2011-06-14 | Dawes Karen A | Buy | 4,500 | 3.56 | 16,002 |
| 2011-03-30 | Rusche James R (Senior Vice President) | Buy | 5,000 | 2.66 | 13,300 |
| 2009-11-09 | Cooper Glenn L Md | Buy | 5,000 | 4.98 | 24,900 |
| 2009-07-07 | Bvf Inc/il (Other) | Sale | 1,000 | 5.50 | 5,500 |
| 2009-07-06 | Bvf Inc/il (Other) | Sale | 450,800 | 5.52 | 2,486,612 |
| 2008-12-01 | Dawes Karen A (Director) | Buy | 2,000 | 3.50 | 7,000 |
| 2008-09-09 | Rich Alexander (Director) | Sale | 5,000 | 5.05 | 25,250 |
| 2008-09-09 | Rich Alexander (Director) | Option Ex | 5,000 | 1.28 | 6,400 |
| 2008-03-04 | Witt Daniel P (Vice President) | Sale | 5,000 | 5.38 | 26,905 |
| 2008-02-20 | Witt Daniel P (Vice President) | Sale | 2,200 | 5.80 | 12,771 |
| 2008-02-19 | Witt Daniel P (Vice President) | Sale | 2,035 | 6.11 | 12,433 |
| 2008-02-15 | Witt Daniel P (Vice President) | Sale | 1,600 | 6.34 | 10,144 |
| 2008-02-14 | Witt Daniel P (Vice President) | Sale | 10,699 | 6.32 | 67,617 |
| 2008-02-14 | Witt Daniel P (Vice President) | Option Ex | 10,000 | 1.41 | 14,100 |
| 2007-12-13 | Rusche James R (Senior Vice President) | Sale | 20,000 | 6.14 | 122,840 |
| 2007-12-13 | Rusche James R (Senior Vice President) | Option Ex | 30,000 | 1.41 | 42,300 |
| 2007-09-20 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 156,277 | 1.41 | 220,350 |
| 2007-07-13 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 243,723 | 1.41 | 343,649 |
| 2007-06-19 | Landy Hal (Vice President) | Sale | 30,000 | 3.82 | 114,600 |
| 2007-06-19 | Landy Hal (Vice President) | Option Ex | 40,000 | 2.44 | 97,600 |
| 2007-06-14 | Rusche James R (Senior Vice President) | Sale | 7,444 | 3.91 | 29,106 |
| 2007-06-14 | Schimmel Paul (Director) | Option Ex | 5,000 | 1.00 | 5,000 |
| 2007-06-14 | Rich Alexander (Director) | Sale | 5,000 | 3.90 | 19,500 |
| 2007-06-14 | Rich Alexander (Director) | Option Ex | 5,000 | 1.00 | 5,000 |
| 2007-03-08 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 25,000 | 3.15 | 78,625 |
| 2007-03-07 | Rusche James R (Senior Vice President) | Option Ex | 20,000 | 1.50 | 30,000 |
| 2007-03-05 | Rusche James R (Senior Vice President) | Sale | 10,000 | 3.05 | 30,500 |
| 2007-02-28 | Witt Daniel P (Vice President) | Sale | 20,000 | 3.10 | 62,100 |
| 2007-02-28 | Witt Daniel P (Vice President) | Option Ex | 20,000 | 1.50 | 30,000 |
| 2007-02-14 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 50,000 | 1.50 | 75,000 |
| 2006-12-05 | Rusche James R (Senior Vice President) | Sale | 8,000 | 2.85 | 22,800 |
| 2006-09-06 | Rich Alexander (Director) | Sale | 5,000 | 3.38 | 16,900 |
| 2006-09-06 | Rich Alexander (Director) | Option Ex | 5,000 | .88 | 4,400 |
| 2006-09-01 | Dawes Karen A (Director) | Buy | 2,000 | 3.33 | 6,660 |
| 2006-08-11 | Schimmel Paul (Director) | Option Ex | 10,000 | .88 | 8,800 |
| 2006-03-06 | Herlihy Walter C (PRESIDENT, CEO) | Option Ex | 200,000 | 1.25 | 250,000 |
| 2006-03-01 | Whitehouse Laura (Vice President) | Sale | 1,800 | 4.50 | 8,100 |
| 2006-03-01 | Whitehouse Laura (Vice President) | Option Ex | 1,800 | 1.25 | 2,250 |
| 2006-02-28 | Whitehouse Laura (Vice President) | Sale | 8,200 | 4.51 | 37,023 |
| 2006-02-28 | Whitehouse Laura (Vice President) | Option Ex | 8,200 | 1.25 | 10,250 |
| 2006-02-21 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 54,000 | 4.25 | 229,500 |
| 2006-02-17 | Witt Daniel P (Vice President) | Sale | 34,600 | 4.25 | 147,050 |
| 2006-02-17 | Witt Daniel P (Vice President) | Option Ex | 34,600 | 1.25 | 43,250 |
| 2006-02-14 | Rusche James R (Senior Vice President) | Sale | 30,000 | 4.16 | 124,710 |
| 2006-02-14 | Rusche James R (Senior Vice President) | Option Ex | 40,000 | 1.25 | 50,000 |
| 2006-02-14 | Witt Daniel P (Vice President) | Sale | 25,400 | 4.25 | 107,950 |
| 2006-02-14 | Witt Daniel P (Vice President) | Option Ex | 25,400 | 1.25 | 31,750 |
| 2006-01-24 | Day Barbara Burnim (Other) | Sale | 3,900 | 4.24 | 16,536 |
| 2006-01-24 | Day Barbara Burnim (Other) | Option Ex | 3,900 | 3.24 | 12,636 |
| 2006-01-20 | Day Barbara Burnim (Other) | Sale | 600 | 4.24 | 2,544 |
| 2006-01-20 | Day Barbara Burnim (Other) | Option Ex | 600 | 3.24 | 1,944 |
| 2006-01-19 | Day Barbara Burnim (Other) | Sale | 2,000 | 4.11 | 8,220 |
| 2006-01-19 | Day Barbara Burnim (Other) | Option Ex | 2,000 | 3.05 | 6,100 |
| 2005-12-27 | Day Barbara Burnim (Other) | Sale | 8,000 | 3.50 | 28,000 |
| 2005-12-27 | Day Barbara Burnim (Other) | Option Ex | 8,000 | 2.66 | 21,280 |
| 2005-12-09 | Ryan Thomas F Jr (Director) | Buy | 8,000 | 2.94 | 23,560 |
| 2005-08-03 | Rusche James R (Senior Vice Presiden) | Sale | 10,000 | 3.45 | 34,500 |
| 2005-08-03 | Herlihy Walter C (PRESIDENT, CEO) | Sale | 17,600 | 3.55 | 62,462 |
| 2005-08-02 | Whitehouse Laura (Vice President) | Sale | 2,825 | 3.10 | 8,757 |
| 2005-07-29 | Rusche James R (Senior Vice Presiden) | Sale | 10,000 | 2.98 | 29,770 |
| 2005-03-10 | Ryan Thomas F Jr (Director) | Buy | 12,000 | 1.72 | 20,640 |
Insider trading activities including stock purchases, stock sales, and option exercises of RGEN listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Repligen Corp (symbol RGEN, CIK number 730272) see the Securities and Exchange Commission (SEC) website.