ALKS insider trading — Alkermes plc.
Over the last 90 days, insiders at Alkermes plc. (ALKS) made 0 open-market purchases worth $0 and 1 open-market sale worth $2.24M, making them net sellers by $2.24M. The largest sale was by Snyderman Nancy Lynn Md (Director), who sold 44,472 shares for $2.24M on Aug 3, 2026.
Updated Oct 16, 2026.
Recent ALKS insider transactions
Every Form 4 filed by Alkermes plc. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Oct 8, 2026 | Reed Joshua | SVP, Chief Financial Officer | M · Option exercise | Direct | 9,164 | — | — | Form 4 |
| Oct 8, 2026 | Reed Joshua | SVP, Chief Financial Officer | F · Tax withholding | Direct | 4,069 | $40.11 | $163K | Form 4 |
| Oct 2, 2026 | Gaffin David Joseph | EVP, CLO, Alkermes, Inc. | S · Sale · 10b5-1 | Direct | 2,034 | $41.03 | $83K | Form 4 |
| Sep 3, 2026 | Gaffin David Joseph | EVP, CLO, Alkermes, Inc. | S · Sale · 10b5-1 | Direct | 2,034 | $48.01 | $98K | Form 4 |
| Sep 1, 2026 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | M · Option exercise · 10b5-1 | Direct | 5,000 | $24.59 | $123K | Form 4 |
| Sep 1, 2026 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | S · Sale · 10b5-1 | Direct | 9,000 | $46.99 | $423K | Form 4 |
| Aug 17, 2026 | Nichols Christian Todd | SVP, Chief Commercial Officer | S · Sale · 10b5-1 | Direct | 7,576 | $49.23 | $373K | Form 4 |
| Aug 3, 2026 | Snyderman Nancy Lynn Md | Director | M · Option exercise | Direct | 44,472 | $46.72 | $2.08M | Form 4 |
| Aug 3, 2026 | Snyderman Nancy Lynn Md | Director | S · Sale | Direct | 44,472 | $50.35 | $2.24M | Form 4 |
| Aug 3, 2026 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | M · Option exercise · 10b5-1 | Direct | 5,000 | $24.48 | $122K | Form 4 |
| Aug 3, 2026 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | S · Sale · 10b5-1 | Direct | 9,000 | $48.58 | $437K | Form 4 |
| Aug 3, 2026 | Gaffin David Joseph | EVP, CLO, Alkermes, Inc. | S · Sale · 10b5-1 | Direct | 2,034 | $48.58 | $99K | Form 4 |
ALKS insider trading FAQ
Are insiders buying ALKS stock?
Not on the open market. In the last 90 days, Alkermes plc. insiders made no open-market purchases, and 1 open-market sale totaling $2.24M. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading ALKS?
Recent sellers: Snyderman Nancy Lynn Md.
Where does ALKS insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
More stocks with insider activity
Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.