LAURENCIN CATO T 4

4 · Alkermes plc. · Filed May 22, 2026

AI-generated summary of this filing

Updated May 23, 2026

Alkermes (ALKS) Director Laurencin Cato Exercises Shares, Withholds Taxes

What Happened

Laurencin Cato, a director of Alkermes plc, had equity activity reported for May 20–21, 2026. The filing shows two grants on 2026-05-20 for 11,538 and 5,409 restricted stock units (RSUs) (both $0.00 on grant). On 2026-05-21 the filing reports the exercise/conversion of 6,142 derivative units into common shares and a disposition of 6,142 shares. Separately, 1,475 shares were surrendered/withheld to satisfy tax withholding at $36.95 per share, totaling $54,501.
These transactions are primarily award/grant conversions and routine tax withholding rather than an open-market purchase. One footnote indicates an award is fully vested under its terms.

Key Details

Transaction dates: Grants on 2026-05-20; exercise/conversion and disposition on 2026-05-21; tax withholding reported on 2026-05-21.
Prices/values: Tax withholding rate shown as $36.95/share for 1,475 shares = $54,501. Exercise/conversion and disposition entries list no per-share sale price (N/A) in the filing.
Shares owned after transaction: not specified in the information provided in this summary.
Footnotes: F1—each RSU represents a right to one share; F2—vesting schedule: vest in full on the earlier of one-year anniversary or next AGM (≥50 weeks after grant); F3—an award is reported as fully vested per its terms.
Filing timeliness: Report filed 2026-05-22 for activity through 2026-05-21 (appears timely under the Form 4 two-business-day rule).

Context

Derivative explanation: The filing shows conversion/exercise of derivative awards (likely RSUs or option conversion) into shares, with shares withheld/surrendered to cover taxes — a common “sell-to-cover” or tax withholding mechanism, which is routine and doesn’t necessarily signal a directional view on the stock.
For retail investors: purchases by insiders tend to be more informative than routine exercises, and this report mainly documents grants, a conversion, and tax-related withholding rather than a clear open-market buy or sell for investment purposes.

Form 4

Period: 2026-05-20

Director

Transactions

Exercise/Conversion
Ordinary Shares
[F1]
2026-05-21+6,142→ 35,244 total
Tax Payment
Ordinary Shares
2026-05-21$36.95/sh−1,475$54,501→ 33,769 total
Award
Non Qualified Stock Option (Right to Buy)
[F2]
2026-05-20+11,538→ 11,538 total
Exercise: $36.98Exp: 2036-05-20→ Ordinary Shares (11,538 underlying)
Award
Restricted Stock Unit Award
[F1][F2]
2026-05-20+5,409→ 5,409 total
→ Ordinary Shares (5,409 underlying)
Exercise/Conversion
Restricted Stock Unit Award
[F1][F3]
2026-05-21−6,142→ 0 total
→ Ordinary Shares (6,142 underlying)

Footnotes (3)

[F1]Each restricted stock unit represents a contingent right to receive one ordinary share.
[F2]Shares subject to the award vest (and if applicable, become exercisable) in full on the earlier of the one-year anniversary of the date of grant or the date of the issuer's next annual general meeting of shareholders that occurs at least 50 weeks after the date of grant.
[F3]This award is fully vested in accordance with its terms.

Signature

/s/ Shantale Greenson, attorney-in-fact for Cato T. Laurencin|2026-05-22

1 file