Alkermes PLC (ALKS) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 9, 2026.
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- Filings shown
- 11
- Open-market buys
- 0
- Open-market sells
- 9
Counts cover the 11 most recent Form 4 filings Tradune holds for ALKS (filed Jul 6 – Oct 9, 2026); the score below covers only the trailing 90 days (0 buys, 8 sells). No completed check of ALKS's Form 4 list on SEC EDGAR is on record yet; the latest ALKS filing Tradune holds was filed Oct 9, 2026. This is not guaranteed to be the complete record — see ALKS's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 10 filings Tradune holds for ALKS filed Aug 3 – Oct 9, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
8 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 7 sales· 31,678 sh
- checkbox disclosed
- On filings with the box not checked
- 1 sale· 44,472 sh
- not proof that no plan exists
- Not comparable
- 0 sales· 0 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| David Joseph GaffinEVP, CLO, Alkermes, Inc. | 0 | 3 | — | 6,102 | −$279,919 |
| Craig C. HopkinsonEVP R&D, Chief Medical Officer | 0 | 2 | — | 18,000 | −$860,094 |
| Christian Todd NicholsSVP, Chief Commercial Officer | 0 | 2 | — | 7,576 | −$372,937 |
| nancy lynn Md snydermanDirector | 0 | 1 | — | 44,472 | −$2,239,076 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at ALKS
No open-market insider purchases (Form 4 code P) were reported for ALKS between Jul 6, 2026 and Oct 9, 2026. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise Restricted Stock Unit Award | 9,164 | — | — | — | Oct 8, 2026 |
| Tax withholding | 4,069 | $40.11 | 5,095 | −44% | Oct 8, 2026 |
| Option exercise | 9,164 | — | 9,164 | — | Oct 8, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Non Qualified Stock Option (Right to Buy) | 17,998 | — | — | — | Oct 7, 2026 |
| Grant / award Restricted Stock Unit Award | 7,239 | — | — | — | Oct 7, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,034 | $41.03 | 221,388 | −0.9% | Oct 2, 2026 |
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,034 | $48.01 | 223,422 | −0.9% | Sep 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 5,000 | $24.59 | 74,389 | +7.2% | Sep 1, 2026 |
| Open-market sale 10b5-1 box checked | 9,000 | $46.99 | 65,389 | −12% | Sep 1, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 5,000 | — | — | — | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 664 | $49.65 | 102,193 | −0.6% | Aug 17, 2026 |
| Open-market sale 10b5-1 box checked | 6,912 | $49.19 | 102,857 | −6.3% | Aug 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award Employee Stock Option (Right to Buy) | 124,305 | — | — | — | Aug 5, 2026 |
| Grant / award Employee Stock Option (Right to Buy) | 93,229 | — | — | — | Aug 5, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 27,948 | $46.72 | 43,343 | +182% | Aug 3, 2026 |
| Option exercise Non Qualified Stock Option (Right to Buy) | 16,524 | — | — | — | Aug 3, 2026 |
| Option exercise Non Qualified Stock Option (Right to Buy) | 27,948 | — | — | — | Aug 3, 2026 |
| Open-market sale 10b5-1 box not checked | 44,472 | $50.35 | 15,395 | −74% | Aug 3, 2026 |
| Option exercise | 16,524 | $46.72 | 59,867 | +38% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Option exercise | 104 | $19.34 | 73,493 | +0.1% | Aug 3, 2026 |
| Open-market sale 10b5-1 box checked | 9,000 | $48.58 | 69,389 | −11% | Aug 3, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 104 | — | — | — | Aug 3, 2026 |
| Option exercise Employee Stock Option (Right to Buy) | 4,896 | — | — | — | Aug 3, 2026 |
| Option exercise | 4,896 | $24.59 | 78,389 | +6.7% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,034 | $48.58 | 225,456 | −0.9% | Aug 3, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box checked | 2,034 | $54.03 | 227,490 | −0.9% | Jul 6, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to ALKS's (Oct 9, 2026).
Frequently asked about ALKS insider activity
How many insiders bought ALKS stock in these Form 4 filings?
No open-market purchases (Form 4 code P) of ALKS shares were reported by Alkermes PLC insiders between Jul 6, 2026 and Oct 9, 2026. The 11 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for ALKS?
The most recent Form 4 on this page was filed by Anne Clem Whitaker (Director) on Oct 9, 2026, reporting 2 transactions. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market ALKS insider sale shown?
The largest open-market sale among the filings shown was 44,472 ALKS shares at $50.35 (about $2,239,076) by nancy lynn Md snyderman (Director) on Aug 3, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not checked.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track ALKS insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.