Dudediligence.

Alkermes plc

ALKSNASDAQ · Pharmaceutical Preparations
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Last 12 months

Sales planned on beside the trades reported on , and whether each names a .

Planned ·

$8,887,016

24 notices · 220,554 sh

Dec 2025 to Oct 2026

Reported ·

$6,237,104

23 sales · 0 buys

Oct 2025 to Jun 2026

The two figures cover different periods.

22 of 23 reported sales carry the 10b5-1 box. Together they are 0.11% of the shares on issue.

PLANNED · FORM 144Dec 2025 to Oct 2026REPORTED · FORM 4Oct 2025 to Jun 2026N2025DJ2026FMAMJJASO2026-10-02: Gaffin David Joseph, Form 1442026-09-03: Gaffin David Joseph, Form 1442026-09-01: Hopkinson Craig C., Form 1442026-08-17: Nichols Christian Todd, Form 1442026-08-03: snyderman nancy lynn MD, Form 1442026-08-03: Gaffin David Joseph, Form 1442026-08-03: Hopkinson Craig C., Form 1442026-07-06: Gaffin David Joseph, Form 1442026-07-01: Hopkinson Craig C., Form 1442026-06-12: Wright Christopher I, Form 1442026-06-04: Gaffin David Joseph, Form 1442026-06-01: Hopkinson Craig C., Form 1442026-05-04: Gaffin David Joseph, Form 1442026-05-01: Hopkinson Craig C., Form 1442026-04-06: Gaffin David Joseph, Form 1442026-04-01: Hopkinson Craig C., Form 1442026-03-03: Gaffin David Joseph, Form 1442026-03-02: Nichols Christian Todd, Form 1442026-03-02: Gaffin David Joseph, Form 1442026-03-02: Hopkinson Craig C., Form 1442026-02-02: Cooke Shane, Form 1442026-02-02: Hopkinson Craig C., Form 1442026-01-08: Hopkinson Craig C., Form 1442026-01-02: Hopkinson Craig C., Form 1442025-10-15: Hopkinson Craig C., sold2025-11-03: Hopkinson Craig C., sold2025-12-01: Hopkinson Craig C., sold2025-12-03: Hopkinson Craig C., sold2026-01-02: Hopkinson Craig C., sold2026-01-08: Hopkinson Craig C., sold2026-02-02: Cooke Shane, sold2026-02-02: Hopkinson Craig C., sold2026-03-02: Gaffin David Joseph, sold2026-03-02: Hopkinson Craig C., sold2026-03-02: Nichols Christian Todd, sold2026-03-02: Parisi Samuel Joseph, sold2026-04-01: Hopkinson Craig C., sold2026-04-06: Gaffin David Joseph, sold2026-05-01: Hopkinson Craig C., sold2026-05-04: Gaffin David Joseph, sold2026-05-29: Parisi Samuel Joseph, sold2026-06-01: Hopkinson Craig C., sold2026-06-04: Gaffin David Joseph, sold2026-06-12: Wright Christopher I, sold
under a no plan named▼ salesize is dollars

Form 144 notices, newest first

2026-10-02Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$83,455
2,034 shplan 2025-11-19Form 4s on file end Jun 23144 ↗
2026-09-03Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$97,652
2,034 shplan 2025-11-19Form 4s on file end Jun 23144 ↗
2026-09-01Hopkinson Craig C., EVP R&D, Chief Medical Officer$422,874
9,000 shplan 2025-03-14Form 4s on file end Jun 23144 ↗
2026-08-17Nichols Christian Todd, SVP, Chief Commercial Officer$372,937
7,576 shplan 2025-11-19Form 4s on file end Jun 23144 ↗
2026-08-03snyderman nancy lynn MD, Officer$2,239,076
44,472 shno plan dateForm 4s on file end Jun 23144 ↗
2026-08-03Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$98,812
2,034 shplan 2025-11-19Form 4s on file end Jun 23144 ↗
2026-08-03Hopkinson Craig C., EVP R&D, Chief Medical Officer$437,220
9,000 shplan 2025-03-14Form 4s on file end Jun 23144 ↗
2026-07-06Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$109,897
2,034 shplan 2025-11-19Form 4s on file end Jun 23144 ↗
2026-07-01Hopkinson Craig C., EVP R&D, Chief Medical Officer$463,621
9,000 shplan 2025-03-14Form 4s on file end Jun 23144 ↗
2026-06-12Wright Christopher I, Officer$90,200
2,000 shplan 2026-03-11144 ↗
Form 4, 2026-06-12: sold 2,000 at $45.10 Form 4 ↗
2026-06-04Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$87,564
2,034 shplan 2025-11-19144 ↗
Form 4, 2026-06-04: sold 2,034 at $43.05 Form 4 ↗
2026-06-01Hopkinson Craig C., EVP R&D, Chief Medical Officer$375,043
9,000 shplan 2025-03-14144 ↗
Form 4, 2026-06-01: sold 9,000 at $41.67 Form 4 ↗
2026-05-04Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$67,529
2,034 shplan 2025-11-19144 ↗
Form 4, 2026-05-04: sold 2,034 at $33.20 Form 4 ↗
2026-05-01Hopkinson Craig C., EVP R&D, Chief Medical Officer$300,560
9,000 shplan 2025-03-14144 ↗
Form 4, 2026-05-01: sold 9,000 at $33.40 Form 4 ↗
2026-04-06Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$70,315
2,034 shplan 2025-11-19144 ↗
Form 4, 2026-04-06: sold 2,034 at $34.57 Form 4 ↗
2026-04-01Hopkinson Craig C., EVP R&D, Chief Medical Officer$319,604
9,000 shplan 2025-03-14144 ↗
Form 4, 2026-04-01: sold 9,000 at $35.51 Form 4 ↗
2026-03-03Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$60,532
2,034 shplan 2025-11-19no Form 4 on file144 ↗
2026-03-02Nichols Christian Todd, SVP, Chief Commercial Officer$180,000
6,000 shplan 2025-11-19144 ↗
Form 4, 2026-03-04: sold 6,000 at $30.00 Form 4 ↗
2026-03-02Gaffin David Joseph, EVP, CLO, Alkermes, Inc.$59,576
2,034 shplan 2025-11-19144 ↗
Form 4, 2026-03-04: sold 4,068 at $29.53 Form 4 ↗
2026-03-02Hopkinson Craig C., EVP R&D, Chief Medical Officer$267,485
9,000 shplan 2025-03-14144 ↗
Form 4, 2026-03-04: sold 9,000 at $29.72 Form 4 ↗
2026-02-02Cooke Shane, Officer$2,115,674
61,200 shplan 2025-02-27144 ↗
Form 4, 2026-02-02: sold 61,200 at $34.57 Form 4 ↗
2026-02-02Hopkinson Craig C., EVP R&D, Chief Medical Officer$305,384
9,000 shplan 2025-03-14144 ↗
Form 4, 2026-02-02: sold 9,000 at $33.93 Form 4 ↗
2026-01-08Hopkinson Craig C., EVP R&D, Chief Medical Officer$150,005
5,000 shplan 2025-03-14144 ↗
Form 4, 2026-01-08: sold 5,000 at $30.00 Form 4 ↗
2026-01-02Hopkinson Craig C., EVP R&D, Chief Medical Officer$112,000
4,000 shplan 2025-03-14144 ↗
Form 4, 2026-01-02: sold 4,000 at $28.00 Form 4 ↗