Kathryn L. Biberstein serves as Executive at ALKERMES INC, where they oversee executive responsibilities. Since joining the company, Kathryn L. Biberstein has executed 168 insider transactions totaling $14.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on May 21, 2016 involved selling 1,521 shares valued at $65.4K.
Kathryn L. Biberstein currently holds 40,200 shares of ALKERMES INC (ALKS), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Kathryn L. Biberstein has been a net seller of ALKS stock. They have purchased $0 and sold $14.6M worth of shares.
Kathryn L. Biberstein's most recent insider trade was on May 21, 2016, when they sold 1,521 shares at $42.98 per share.
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| 4,500 |
| $N/A |
| Discretionary |
| Apr 20, 2016 | ALKS | $263.1K | Option Exercise | 12,657 | $20.79 | Discretionary |
| Mar 3, 2016 | ALKS | $87.7K | Option Exercise | 4,218 | $20.79 | Discretionary |
| Mar 3, 2016 | ALKS | $12.3K | Option Exercise | 855 | $14.38 | Discretionary |
| Mar 3, 2016 | ALKS | $79.8K | Option Exercise | 5,000 | $15.95 | Discretionary |
| Mar 3, 2016 | ALKS | $20.3K | Option Exercise | 1,434 | $14.13 | Discretionary |
| Mar 3, 2016 | ALKS | $0 | Option Exercise | 3,500 | $N/A | Discretionary |
| Feb 26, 2016 | ALKS | $40.9K | Payment | 1,217 | $33.61 | Discretionary |
| Feb 26, 2016 | ALKS | $0 | Option Exercise | 3,750 | $N/A | Discretionary |
| Dec 8, 2015 | ALKS | $0 | Gift | 500 | $N/A | Discretionary |
| Oct 5, 2015 | ALKS | $0 | Award | 5,000 | $N/A | Discretionary |
| Oct 5, 2015 | ALKS | $140.8K | Payment | 2,356 | $59.77 | Discretionary |
| May 28, 2015 | ALKS | $105.9K | Payment | 1,767 | $59.92 | Discretionary |
| May 28, 2015 | ALKS | $0 | Option Exercise | 3,750 | $N/A | Discretionary |
| May 21, 2015 | ALKS | $0 | Option Exercise | 4,500 | $N/A | Discretionary |
| May 21, 2015 | ALKS | $131.0K | Payment | 2,120 | $61.80 | Discretionary |
| May 20, 2015 | ALKS | $109.7K | Payment | 1,767 | $62.10 | Discretionary |
| May 20, 2015 | ALKS | $0 | Option Exercise | 3,750 | $N/A | Discretionary |
| Mar 30, 2015 | ALKS | $100.0K | Option Exercise | 5,376 | $18.60 | Discretionary |
| Mar 3, 2015 | ALKS | $120.0K | Payment | 1,649 | $72.80 | Discretionary |
| Mar 3, 2015 | ALKS | $0 | Option Exercise | 3,500 | $N/A | Discretionary |
| Jan 7, 2015 | ALKS | $527.8K | Option Exercise | 28,374 | $18.60 | Discretionary |
| Jan 7, 2015 | ALKS | $1.8M | Sale | 28,374 | $65.00 | Discretionary |
| Dec 5, 2014 | ALKS | $230.0K | Option Exercise | 15,433 | $14.90 | Discretionary |
| Dec 5, 2014 | ALKS | $582.4K | Sale | 10,133 | $57.48 | Discretionary |
| Dec 5, 2014 | ALKS | $306.7K | Sale | 5,300 | $57.86 | Discretionary |
| Nov 26, 2014 | ALKS | $100.0K | Payment | 1,817 | $55.01 | Discretionary |
| Nov 26, 2014 | ALKS | $100.0K | Option Exercise | 11,696 | $8.55 | Discretionary |
| Nov 11, 2014 | ALKS | $5.3K | Sale | 100 | $53.07 | Discretionary |