Form4insider filings, from the source

Company · CIK 0001520262 · SIC 2834 — Pharmaceutical Preparations · Nasdaq

Alkermes plc. · ALKS

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $4.2M · 8net −$4.2M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesJun 27Jul 12Jul 27Aug 12Aug 27Sep 12Sep 27

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 3, 2026 SForm 4 →Sep 3, 6:32 pm EDTDavid Joseph GaffinEVP, CLO, Alkermes, Inc.2,034$48.01$97,652223,422−0.90%10b5-1
Sep 1, 2026 SForm 4 →Sep 1, 7:08 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer9,000$46.99$422,87465,389−12.1%10b5-1
Sep 1, 2026 MForm 4 →Sep 1, 7:08 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer5,000$24.59$122,95074,389—10b5-1
Aug 17, 2026 SForm 4 →Aug 17, 6:53 pm EDTChristian Todd NicholsSVP, Chief Commercial Officer7,576$49.23$372,937102,193−6.90%10b5-1
Aug 3, 2026 SForm 4 →Aug 3, 7:16 pm EDTnancy lynn snyderman M.D.Director44,472$50.35$2,239,07615,395−74.3%
Aug 3, 2026 MForm 4 →Aug 3, 7:16 pm EDTnancy lynn snyderman M.D.Director44,472$46.72$2,077,73259,867—
Aug 3, 2026 SForm 4 →Aug 3, 7:12 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer9,000$48.58$437,22069,389−11.5%10b5-1
Aug 3, 2026 MForm 4 →Aug 3, 7:12 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer5,000$24.48$122,40478,389—10b5-1
Aug 3, 2026 SForm 4 →Aug 3, 7:09 pm EDTDavid Joseph GaffinEVP, CLO, Alkermes, Inc.2,034$48.58$98,812225,456−0.89%10b5-1
Jul 6, 2026 SForm 4 →Jul 6, 4:48 pm EDTDavid Joseph GaffinEVP, CLO, Alkermes, Inc.2,034$54.03$109,897227,490−0.89%10b5-1
Jul 1, 2026 SForm 4 →Jul 1, 6:29 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer9,000$51.51$463,62173,389−10.9%10b5-1
Jul 1, 2026 MForm 4 →Jul 1, 6:29 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer5,000$19.34$96,70082,389—10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 1, 2026 MForm 4 →Sep 1, 7:08 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer5,000——61,276—10b5-1
Aug 5, 2026 AForm 4 →Aug 7, 9:17 pm EDTBlair Curtis JacksonPresident & CEO, Alkermes plc, Director217,534——124,305—
Aug 3, 2026 MForm 4 →Aug 3, 7:16 pm EDTnancy lynn snyderman M.D.Director44,472——0—
Aug 3, 2026 MForm 4 →Aug 3, 7:12 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer5,000——66,276—10b5-1
Jul 1, 2026 MForm 4 →Jul 1, 6:29 pm EDTCraig C. HopkinsonEVP R&D, Chief Medical Officer5,000——1,356—10b5-1