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Alkermes plc. planned insider sales

In the twelve months since 11 October 2025 insiders at Alkermes plc. filed 28 Form 144 notices of planned sales, 246,302 shares worth $9.7 million at the time of filing, from 6 sellers. The latest, filed 2 October 2026: Gaffin David Joseph (officer), 2,034 shares worth $83,455, planned for around 2 October 2026 through Merrill Lynch.

FiledSellerRelationshipSharesValuePlanned saleBrokerHow acquiredFiling
2 October 2026Gaffin David JosephOfficer2,034$83,4552 October 2026Merrill LynchVesting of restricted stock unit awardForm 144
3 September 2026Gaffin David JosephOfficer2,034$97,6523 September 2026Merrill LynchVesting of restricted stock unit awardForm 144
1 September 2026Hopkinson Craig C.Officer9,000$422,8741 September 2026Merrill LynchExercise of employee stock options; Vesting of performance share award; Vesting of restricted stock unit awardsForm 144
17 August 2026Nichols Christian ToddOfficer7,576$372,93717 August 2026Merrill LynchVesting of restricted stock unit awardsForm 144
3 August 2026Gaffin David JosephOfficer2,034$98,8123 August 2026Merrill LynchVesting of performance share unit awards; Vesting of restricted stock unit awardForm 144
3 August 2026Hopkinson Craig C.Officer9,000$437,2203 August 2026Merrill LynchExercise of employee stock options; Vesting of performance share award; Vesting of restricted stock unit awardsForm 144
3 August 2026snyderman nancy lynn MDOfficer44,472$2.2 million3 August 2026Merrill LynchExercise of employee stock optionsForm 144
6 July 2026Gaffin David JosephOfficer2,034$109,8976 July 2026Merrill LynchVesting of performance share unit awards; Vesting of restricted stock unit awardForm 144
1 July 2026Hopkinson Craig C.Officer9,000$463,6211 July 2026Merrill LynchExercise of employee stock options; Vesting of performance share awardForm 144
12 June 2026Wright Christopher IOfficer2,000$90,20012 June 2026Merrill LynchVesting of restricted stock unit awardsForm 144
4 June 2026Gaffin David JosephOfficer2,034$87,5644 June 2026Merrill LynchVesting of restricted stock unit awardForm 144
1 June 2026Hopkinson Craig C.Officer9,000$375,0431 June 2026Merrill LynchExercise of employee stock options; Vesting of performance share awardForm 144
4 May 2026Gaffin David JosephOfficer2,034$67,5294 May 2026Merrill LynchVesting of performance share unit award; Vesting of restricted stock unit awardForm 144
1 May 2026Hopkinson Craig C.Officer9,000$300,5601 May 2026Merrill LynchExercise of employee stock options; Vesting of performance share awardForm 144
6 April 2026Gaffin David JosephOfficer2,034$70,3156 April 2026Merrill LynchVesting of performance share unit award; Vesting of restricted stock unit awardForm 144
1 April 2026Hopkinson Craig C.Officer9,000$319,6041 April 2026Merrill LynchExercise of employee stock options; Vesting of performance share awardForm 144
3 March 2026Gaffin David JosephOfficer2,034$60,5323 March 2026Merrill LynchVesting of performance share unit award; Vesting of restricted stock unit awardForm 144
2 March 2026Gaffin David JosephOfficer2,034$59,5762 March 2026Merrill LynchVesting of restricted stock unit awardForm 144
2 March 2026Nichols Christian ToddOfficer6,000$180,0002 March 2026Merrill LynchVesting of restricted stock unit awardsForm 144
2 March 2026Hopkinson Craig C.Officer9,000$267,4852 March 2026Merrill LynchExercise of employee stock options; Vesting of performance share awardForm 144
2 February 2026Hopkinson Craig C.Officer9,000$305,3842 February 2026Merrill LynchExercise of employee stock options; Vesting of restricted stock unity awardForm 144
2 February 2026Cooke ShaneOfficer61,200$2.1 million2 February 2026Merrill LynchExercise of employee stock optionsForm 144
8 January 2026Hopkinson Craig C.Officer5,000$150,0058 January 2026Merrill LynchExercise of employee stock optionsForm 144
2 January 2026Hopkinson Craig C.Officer4,000$112,0002 January 2026Merrill LynchVesting of restricted stock unit awardForm 144
3 December 2025Hopkinson Craig C.Officer3,748$112,4473 December 2025Merrill LynchExercise of employee stock optionsForm 144
1 December 2025Hopkinson Craig C.Officer4,000$117,2001 December 2025Merrill LynchVesting of restricted stock unit awardForm 144
3 November 2025Hopkinson Craig C.Officer9,000$273,4423 November 2025Merrill LynchExercise of employee stock options; Vesting of restricted stock unit awardForm 144
15 October 2025Hopkinson Craig C.Officer9,000$283,77715 October 2025Merrill LynchExercise of employee stock options; Vesting of restricted stock unit awardForm 144
A Form 144 is the notice an insider files with the SEC before selling restricted or control shares over the Rule 144 thresholds; it says what may be sold, not what was.
Read moreValue is the filer's own aggregate market value. Whether the sale happened shows up later on Form 4, on the insiders page.

Source

Form 144 filings on EDGAR for Alkermes plc.: the company's filing index, each notice read from its own XML.

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