ISSUER PROFILE · CIK 0001520262
Alkermes plc.ALKS
8 13D/G filings
2 distinct filers
7 insider transactions (365d)
Cross-Reference Snapshot
Distinct filers
2
multi-activist cluster
Insiders (365d)
7
4 buys · 2 sales
Latest short DTC
11.79
as of 2026-08-31
13D/G Filings Timeline · 8 total
Form 4 Insider Transactions · last 365d
| Date | Insider | Role | Type | Shares | Price | Value |
|---|
| 2026-09-01 |
Hopkinson Craig C. |
officer |
Option exercise |
5,000 |
$24.59 |
$123K |
| 2026-09-01 |
Hopkinson Craig C. |
officer |
Sale |
9,000 |
$46.99 |
$423K |
| 2026-08-05 |
Jackson Blair Curtis |
director, officer |
Award |
93,229 |
$49.61 |
$4.63M |
| 2026-08-05 |
Jackson Blair Curtis |
director, officer |
Award |
124,305 |
$49.61 |
$6.17M |
| 2026-05-20 |
GAYNOR RICHARD |
director |
Award |
11,538 |
$36.98 |
$427K |
| 2026-05-20 |
Cooke Shane |
director |
Award |
11,538 |
$36.98 |
$427K |
| 2026-04-06 |
Gaffin David Joseph |
officer |
Sale |
2,034 |
$34.57 |
$70K |
FINRA Short Interest History
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|
| 2026-08-31 |
14,717,404 |
11.79 |
-0.3% |
| 2026-08-14 |
14,761,342 |
10.19 |
+2.5% |
| 2026-07-31 |
14,406,911 |
7.72 |
-4.1% |
| 2026-07-15 |
15,017,743 |
9.11 |
-14.0% |
| 2026-06-30 |
17,464,944 |
4.81 |
-2.8% |
| 2026-06-15 |
17,962,751 |
9.46 |
+3.5% |
| 2026-05-29 |
17,355,226 |
8.45 |
-5.0% |
| 2026-05-15 |
18,277,684 |
7.55 |
-7.5% |
| 2026-04-30 |
19,760,435 |
12.55 |
+0.4% |
| 2026-04-15 |
19,684,219 |
8.17 |
+3.5% |
| 2026-03-31 |
19,013,418 |
5.86 |
-7.7% |
| 2026-03-13 |
20,600,815 |
9.43 |
+13.2% |
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