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 Mar 3, 2018 involved selling 1,556 shares valued at $93.4K.
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 Mar 3, 2018, when they sold 1,556 shares at $60.05 per share.
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| $N/A |
| Discretionary |
| Mar 1, 2018 | ALKS | $0 | Option Exercise | 5,750 | $N/A | Discretionary |
| Mar 1, 2018 | ALKS | $126.7K | Payment | 2,207 | $57.41 | Discretionary |
| Feb 26, 2018 | ALKS | $0 | Option Exercise | 3,750 | $N/A | Discretionary |
| Feb 26, 2018 | ALKS | $64.2K | Payment | 1,105 | $58.12 | Discretionary |
| Feb 20, 2018 | ALKS | $68.0K | Option Exercise | 4,107 | $16.55 | Discretionary |
| Feb 20, 2018 | ALKS | $100.0K | Option Exercise | 2,965 | $33.72 | Discretionary |
| Feb 20, 2018 | ALKS | $65.0K | Option Exercise | 3,588 | $18.11 | Discretionary |
| Feb 20, 2018 | ALKS | $77.3K | Option Exercise | 6,582 | $11.74 | Discretionary |
| Feb 17, 2018 | ALKS | $77.2K | Payment | 1,148 | $67.26 | Discretionary |
| Feb 17, 2018 | ALKS | $0 | Option Exercise | 3,750 | $N/A | Discretionary |
| Dec 4, 2017 | ALKS | $0 | Gift | 879 | $N/A | Discretionary |
| Sep 15, 2017 | ALKS | $32.0K | Payment | 613 | $52.22 | Discretionary |
| Sep 15, 2017 | ALKS | $32.0K | Option Exercise | 1,935 | $16.55 | Discretionary |
| Sep 15, 2017 | ALKS | $35.0K | Option Exercise | 1,935 | $18.11 | Discretionary |
| Sep 15, 2017 | ALKS | $35.0K | Payment | 670 | $52.22 | Discretionary |
| Sep 15, 2017 | ALKS | $22.7K | Payment | 435 | $52.22 | Discretionary |
| Sep 15, 2017 | ALKS | $22.7K | Option Exercise | 1,935 | $11.74 | Discretionary |
| Sep 11, 2017 | ALKS | $191.7K | Option Exercise | 13,566 | $14.13 | Discretionary |
| Sep 11, 2017 | ALKS | $129.4K | Sale | 2,499 | $51.77 | Discretionary |
| Sep 11, 2017 | ALKS | $566.4K | Sale | 11,067 | $51.18 | Discretionary |
| May 28, 2017 | ALKS | $101.8K | Payment | 1,765 | $57.70 | Discretionary |
| May 28, 2017 | ALKS | $0 | Option Exercise | 3,750 | $N/A | Discretionary |
| Apr 3, 2017 | ALKS | $239.3K | Option Exercise | 15,000 | $15.95 | Discretionary |
| Apr 3, 2017 | ALKS | $17.7K | Sale | 300 | $59.13 | Discretionary |
| Apr 3, 2017 | ALKS | $219.6K | Sale | 3,763 | $58.35 | Discretionary |
| Apr 3, 2017 | ALKS | $627.9K | Sale | 10,937 | $57.41 | Discretionary |
| Mar 10, 2017 | ALKS | $100.0K | Option Exercise | 8,137 | $12.29 | Discretionary |
| Mar 3, 2017 | ALKS | $0 | Option Exercise | 3,500 | $N/A | Discretionary |