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CIK 0001520262 · Large accelerated filer

Alkermes plc.

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Ticker
ALKS
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
FY end
Dec 31
Entity type
operating
EIN
981007018
Phone
00-353-1-772-8000
Business address
CONNAUGHT HOUSE, 1 BURLINGTON ROAD, DUBLIN 4, Ireland, 00000
Former names
ANTLER SCIENCE TWO PLC, Antler Science Two Ltd
Open-market buys, last 90 days
$0
in 0 filings
Open-market sales, last 90 days
$1,070,874
in 5 filings, $1.1M under 10b5-1 plans

Net −$1,070,874. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Hopkinson Craig C. −$423K EVP R&D, Chief Medical Officer sold 12% of stake
  2. Nichols Christian Todd −$373K SVP, Chief Commercial Officer sold 7% of stake
  3. Gaffin David Joseph −$275K EVP, CLO, Alkermes, Inc. sold 3% of stake

Reading 100 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-05-21 GAYNOR RICHARD Director Shares withheld for taxes −1,475 $36.95 $55K 35,751
2026-05-21 GAYNOR RICHARD Director Option exercise · Restricted Stock Unit Award −6,142 0
2026-05-21 Cooke Shane Director Option exercise +6,142 109,886
2026-05-21 Cooke Shane Director Shares withheld for taxes −3,207 $36.95 $118K 106,679
2026-05-21 Cooke Shane Director Option exercise · Restricted Stock Unit Award −6,142 0
2026-05-20 Wright Christopher I Director Grant or award · Non Qualified Stock Option (Right to Buy) +11,538 11,538
2026-05-20 Wright Christopher I Director Grant or award · Restricted Stock Unit Award +5,409 5,409
2026-05-20 Wilson Frank Anders Director Grant or award · Non Qualified Stock Option (Right to Buy) +11,538 11,538
2026-05-20 Wilson Frank Anders Director Grant or award · Restricted Stock Unit Award +5,409 5,409
2026-05-20 snyderman nancy lynn MD Director Grant or award · Non Qualified Stock Option (Right to Buy) +11,538 11,538
2026-05-20 snyderman nancy lynn MD Director Grant or award · Restricted Stock Unit Award +5,409 5,409
2026-05-20 MCKEON BRIAN P Director Grant or award · Non Qualified Stock Option (Right to Buy) +11,538 11,538
2026-05-20 MCKEON BRIAN P Director Grant or award · Restricted Stock Unit Award +5,409 5,409
2026-05-20 Lurker Nancy Director Grant or award · Non Qualified Stock Option (Right to Buy) +11,538 11,538
2026-05-20 Lurker Nancy Director Grant or award · Restricted Stock Unit Award +5,409 5,409
2026-05-20 LAURENCIN CATO T Director Grant or award · Non Qualified Stock Option (Right to Buy) +11,538 11,538
2026-05-20 LAURENCIN CATO T Director Grant or award · Restricted Stock Unit Award +5,409 5,409
2026-05-20 GAYNOR RICHARD Director Grant or award · Non Qualified Stock Option (Right to Buy) +11,538 11,538
2026-05-20 GAYNOR RICHARD Director Grant or award · Restricted Stock Unit Award +5,409 5,409
2026-05-20 Cooke Shane Director Grant or award · Non Qualified Stock Option (Right to Buy) +11,538 11,538

Page 4 of 41 · 804 trades