Alkermes plc.
Institutional investors holding ALKS
| Investor | Weight | Quarter |
|---|---|---|
| Viking Global Investors | 0.27% | 2023Q2 |
| Meridian / ArrowMark | 0.01% | 2014Q2 |
| Richard Pzena | 0.00% | 2025Q2 |
| Kenneth Fisher | 0.00% | 2026Q1 |
Congressional data coming soon
46
Total trades
$3.0M
Volume
16
Buys
16
Sells
Last trade: Jun 4, 2026
| Date | Insider | Type | Value |
|---|---|---|---|
| Jun 4, 2026 | David Joseph Gaffin | Sell | $88K |
| Jun 1, 2026 | David Joseph Gaffin | Sell | $375K |
Congressional trade data is being sourced and will appear here shortly.
| Jun 1, 2026 |
| David Joseph Gaffin |
| Option |
| $97K |
| May 29, 2026 | David Joseph Gaffin | Sell | $687K |
| May 29, 2026 | David Joseph Gaffin | Option | $68K |
| May 29, 2026 | David Joseph Gaffin | Option | $248K |
| May 20, 2026 | David Joseph Gaffin | Option | – |
| May 20, 2026 | David Joseph Gaffin | Sell | $118K |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Option | – |
| May 20, 2026 | David Joseph Gaffin | Sell | $55K |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Option | – |
| May 20, 2026 | David Joseph Gaffin | Sell | $55K |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Option | – |
| May 20, 2026 | David Joseph Gaffin | Sell | $55K |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Option | – |
| May 20, 2026 | David Joseph Gaffin | Sell | $55K |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Option | – |
| May 20, 2026 | David Joseph Gaffin | Sell | $55K |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Option | – |
| May 20, 2026 | David Joseph Gaffin | Sell | $55K |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Option | – |
| May 20, 2026 | David Joseph Gaffin | Sell | $55K |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 20, 2026 | David Joseph Gaffin | Buy | – |
| May 4, 2026 | David Joseph Gaffin | Sell | $68K |
| May 1, 2026 | David Joseph Gaffin | Sell | $301K |
| May 1, 2026 | David Joseph Gaffin | Option | $97K |