Quick Takeaways
- ALKS - Alkermes plc. has 24 insiders with reported activity on this page.
- Net insider value flow over the last year: -$4,839,391.
- Recent transaction rows are available for direct filing-level review.
- Info
- Insider Trading
- Financials
- Holders
Insider Transactions Reported by 24 Insiders of Alkermes plc.
- Symbol
- ALKS on Nasdaq
- Location
- Dublin 4, Ireland
What Changed
- Buy value: ; sell value: $4,839,391.
- Net share flow: -148,607.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Official SEC Source
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$4,839,391.
Buys
$0
Shares: 0
Insiders: 0
Sells
$4,839,391
Shares: 148,607
Insiders: 5
Net
-$4,839,391
Shares: -148,607
Insiders: -5
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 107,192 | $0 | $3,580,378 | -$3,580,378 |
| 3-6 | 0 | 34,748 | $0 | $1,048,870 | -$1,048,870 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 6,667 | $0 | $210,143 | -$210,143 |
Alkermes plc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Richard F. Pops | Director and CEO, Alkermes plc, Director | $46,223,176 | Mixed | 02 Mar 2026 | ||
| Michael J. Landine | SVP, Corp Dev., Alkermes, Inc. | $10,080,520 | Mixed | 23 Feb 2024 | ||
| David Joseph Gaffin | EVP, CLO, Alkermes, Inc. | $8,075,275 | -$190,423 | -2.3% | Filing P/S | 06 Apr 2026 |
| Blair C. Jackson | EVP, Chief Operating Officer | $7,415,394 | Mixed | 02 Mar 2026 | ||
| Iain M. Brown | SVP, Chief Financial Officer | $5,156,480 | Mixed | 26 Feb 2025 | ||
| Shane Cooke | Director | $3,608,174 | -$2,115,673 | -37% | Filing P/S | 02 Feb 2026 |
| Christian Todd Nichols | SVP, Chief Commercial Officer | $3,293,070 | -$390,143 | -11% | Filing P/S | 02 Mar 2026 |
| David Angelo Daglio Jr. | Director | $3,134,852 | Mixed | 29 Jun 2024 | ||
| Craig C. Hopkinson | EVP R&D, Chief Medical Officer | $3,032,300 | -$1,941,344 | -39% | Filing P/S | 01 Apr 2026 |
| David W. Anstice | Director | $2,195,643 | Mixed | 14 Jun 2022 | ||
| Brian P. McKeon | Director | $1,877,884 | Mixed | 31 May 2025 | ||
| Nancy Lynn Snyderman MD | Director | $1,497,125 | Mixed | 31 May 2025 | ||
| Frank Anders Wilson | Director | $1,488,835 | Mixed | 31 May 2025 | ||
| Richard Gaynor | Director | $1,488,835 | Mixed | 31 May 2025 | ||
| Cato T. Laurencin | Director | $1,428,166 | Mixed | 31 May 2025 | ||
| Wendy L. Dixon | Director | $1,373,787 | Mixed | 14 Jun 2022 | ||
| Nancy Wysenski | Director | $1,208,200 | Mixed | 07 Jul 2023 | ||
| Emily Peterson Alva | Director | $1,195,332 | Mixed | 29 Jun 2024 | ||
| Nancy Lurker | Director | $865,034 | Mixed | 31 May 2025 | ||
| Christopher I. Wright | Director | $729,742 | Mixed | 08 Jun 2025 | ||
| Paul J. Mitchell | Director | $469,980 | Mixed | 20 May 2021 | ||
| Robert A. Breyer | Director | $267,134 | Mixed | 20 May 2021 | ||
| Samuel Joseph Parisi | VP, Finance (Interim PAO) | $226,030 | -$201,808 | -47% | Filing P/S | 02 Mar 2026 |
| Joshua Reed | SVP, Chief Financial Officer | Mixed | 02 Mar 2026 |
Top shareholders of Alkermes plc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
|
Company |
16%
from 13D/G
|
28,272,412
|
$791,062,090 | — | 31 Dec 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
11%
|
18,007,364
|
$503,846,044 | — | 31 Dec 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13D/G
13F
|
T. Rowe Price Associates, Inc. · Company |
6.1%
|
10,041,900
|
$291,215,100 | $0 | 30 Jun 2025 | |
| BAKER BROS. ADVISORS LP |
13F
13D/G
|
Company |
6.1%
from 13D/G
|
10,012,267
|
$280,143,231 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
13D/G
|
Company · STATE STREET CORPORATION |
5.2%
from 13D/G
|
9,472,858
|
$265,050,567 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13D/G
13F
|
Company |
4.3%
|
7,012,483
|
$201,749,136 | $0 | 31 Dec 2024 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
4.1%
|
6,668,028
|
$186,571,423 | — | 31 Dec 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
3.6%
|
5,956,824
|
$166,671,997 | — | 31 Dec 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
3.2%
|
5,184,547
|
$145,063,637 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.7%
|
4,412,783
|
$123,466,744 | — | 31 Dec 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.5%
|
4,080,776
|
$114,198,472 | — | 31 Dec 2025 | |
| Commodore Capital LP |
13F
|
Company |
2.2%
|
3,550,000
|
$99,329,000 | — | 31 Dec 2025 | |
| PRIMECAP MANAGEMENT CO/CA/ |
13F
|
Company |
1.6%
|
2,564,300
|
$71,749,112 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
1.6%
|
2,544,895
|
$71,206,162 | — | 31 Dec 2025 | |
| Nuveen, LLC |
13F
|
Company |
1.5%
|
2,427,028
|
$67,908,244 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
1.4%
|
2,267,588
|
$63,447,113 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.3%
|
2,152,756
|
$60,234,113 | — | 31 Dec 2025 | |
| Deep Track Capital, LP |
13F
|
Company |
1.2%
|
2,000,000
|
$55,960,000 | — | 31 Dec 2025 | |
| NORGES BANK |
13F
|
Company |
1.2%
|
1,945,734
|
$54,441,637 | — | 31 Dec 2025 | |
| LOOMIS SAYLES & CO L P |
13F
|
Company |
1.2%
|
1,902,522
|
$53,232,566 | — | 31 Dec 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.2%
|
1,888,487
|
$52,839,910 | — | 31 Dec 2025 | |
| RTW INVESTMENTS, LP |
13F
|
Company |
1%
|
1,672,356
|
$46,792,521 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1%
|
1,653,475
|
$46,264,230 | — | 31 Dec 2025 | |
| Richard F. Pops |
3/4/5
|
Director and CEO, Alkermes plc, Director |
—
mixed-class rows
|
1,466,583
mixed-class rows
|
$46,223,176 | — | 02 Mar 2026 | |
| Pictet Asset Management Holding SA |
13F
|
Company |
0.9%
|
1,477,214
|
$41,343,880 | — | 31 Dec 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
0.89%
|
1,454,002
|
$40,682,975 | — | 31 Dec 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
0.88%
|
1,450,841
|
$40,594,531 | — | 31 Dec 2025 | |
| Avoro Capital Advisors LLC |
13F
|
Company |
0.85%
|
1,400,000
|
$39,172,000 | — | 31 Dec 2025 | |
| FMR LLC |
13F
|
Company |
0.83%
|
1,355,253
|
$37,919,991 | — | 31 Dec 2025 | |
| Artisan Partners Limited Partnership |
13F
|
Company |
0.82%
|
1,349,122
|
$37,748,434 | — | 31 Dec 2025 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.81%
|
1,333,105
|
$37,300,278 | — | 31 Dec 2025 | |
| Soleus Capital Management, L.P. |
13F
|
Company |
0.81%
|
1,322,364
|
$36,999,745 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.74%
|
1,213,397
|
$33,950,848 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.73%
|
1,198,268
|
$33,527,539 | — | 31 Dec 2025 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.67%
|
1,095,846
|
$30,661,771 | — | 31 Dec 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.65%
|
1,074,087
|
$30,052,948 | — | 31 Dec 2025 | |
| Affinity Asset Advisors, LLC |
13F
|
Company |
0.61%
|
1,000,000
|
$27,980,000 | — | 31 Dec 2025 | |
| VIRGINIA RETIREMENT SYSTEMS ET Al |
13F
|
Company |
0.59%
|
976,483
|
$27,321,994 | — | 31 Dec 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.58%
|
947,623
|
$26,514,491 | — | 31 Dec 2025 | |
| PANAGORA ASSET MANAGEMENT INC |
13F
|
Company |
0.57%
|
928,964
|
$25,992,413 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.56%
|
911,272
|
$25,497,390 | — | 31 Dec 2025 | |
| DRIEHAUS CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.49%
|
796,968
|
$22,299,165 | — | 31 Dec 2025 | |
| Frazier Life Sciences Management, L.P. |
13F
|
Company |
0.43%
|
700,647
|
$19,604,103 | — | 31 Dec 2025 | |
| BALYASNY ASSET MANAGEMENT L.P. |
13F
|
Company |
0.41%
|
679,633
|
$19,016,131 | — | 31 Dec 2025 | |
| Pacer Advisors, Inc. |
13F
|
Company |
0.41%
|
674,874
|
$18,882,975 | — | 31 Dec 2025 | |
| PUBLIC SECTOR PENSION INVESTMENT BOARD |
13F
|
Company |
0.41%
|
671,170
|
$18,779,337 | — | 31 Dec 2025 | |
| SEGALL BRYANT & HAMILL, LLC |
13F
|
Company |
0.37%
|
615,292
|
$17,215,870 | — | 31 Dec 2025 | |
| BARCLAYS PLC |
13F
|
Company |
0.34%
|
565,033
|
$15,809,623 | — | 31 Dec 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.34%
|
562,587
|
$15,741,184 | — | 31 Dec 2025 | |
| Woodline Partners LP |
13F
|
Company |
0.34%
|
558,567
|
$15,628,705 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for Alkermes plc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| David Joseph Gaffin | ALKS | Ordinary Shares | Sale | -0.86% | $70,315 | $34.57 | -2,034 | 233,592 | 06 Apr 2026 | Direct |
| Craig C. Hopkinson | ALKS | Ordinary Shares | Sale | -9.54% | $319,604 | $35.51 | -9,000 | 85,389 | 01 Apr 2026 | Direct |
| Craig C. Hopkinson | ALKS | Ordinary Shares | Options Exercise | 5.59% | 5,000 | 94,389 | 01 Apr 2026 | Direct | ||
| Craig C. Hopkinson | ALKS | Employee Stock Option (Right to Buy) | Options Exercise | -23.4% | -5,000 | 16,356 | 01 Apr 2026 | Direct | ||
| David Joseph Gaffin | ALKS | Ordinary Shares | Sale | -0.86% | $60,532 | $29.76 | -2,034 | 235,626 | 03 Mar 2026 | Direct |
| Joshua Reed | ALKS | Restricted Stock Unit Award | Award | 30,854 | 30,854 | 02 Mar 2026 | Direct | |||
| Joshua Reed | ALKS | Employee Stock Option (Right to Buy) | Award | 66,430 | 66,430 | 02 Mar 2026 | Direct | |||
| Richard F. Pops | ALKS | Restricted Stock Unit Award | Award | 88,843 | 88,843 | 02 Mar 2026 | Direct | |||
| Samuel Joseph Parisi | ALKS | Ordinary Shares | Sale | -47.2% | $201,808 | $29.29 | -6,890 | 7,717 | 02 Mar 2026 | Direct |
| Samuel Joseph Parisi | ALKS | Restricted Stock Unit Award | Award | 14,176 | 14,176 | 02 Mar 2026 | Direct | |||
| Samuel Joseph Parisi | ALKS | Employee Stock Option (Right to Buy) | Award | 15,033 | 15,033 | 02 Mar 2026 | Direct | |||
| Christian Todd Nichols | ALKS | Ordinary Shares | Sale | -5.18% | $180,000 | $30.00 | -6,000 | 109,769 | 02 Mar 2026 | Direct |
| Christian Todd Nichols | ALKS | Restricted Stock Unit Award | Award | 30,854 | 30,854 | 02 Mar 2026 | Direct | |||
| Christian Todd Nichols | ALKS | Employee Stock Option (Right to Buy) | Award | 66,430 | 66,430 | 02 Mar 2026 | Direct | |||
| Blair C. Jackson | ALKS | Restricted Stock Unit Award | Award | 44,078 | 44,078 | 02 Mar 2026 | Direct | |||
| Blair C. Jackson | ALKS | Employee Stock Option (Right to Buy) | Award | 94,900 | 94,900 | 02 Mar 2026 | Direct | |||
| Craig C. Hopkinson | ALKS | Ordinary Shares | Sale | -9.15% | $267,485 | $29.72 | -9,000 | 89,389 | 02 Mar 2026 | Direct |
| Craig C. Hopkinson | ALKS | Ordinary Shares | Options Exercise | 5.35% | 5,000 | 98,389 | 02 Mar 2026 | Direct | ||
| Craig C. Hopkinson | ALKS | Restricted Stock Unit Award | Award | 38,568 | 38,568 | 02 Mar 2026 | Direct | |||
| Craig C. Hopkinson | ALKS | Employee Stock Option (Right to Buy) | Award | 83,037 | 83,037 | 02 Mar 2026 | Direct | |||
| Craig C. Hopkinson | ALKS | Employee Stock Option (Right to Buy) | Options Exercise | -19% | -5,000 | 21,356 | 02 Mar 2026 | Direct | ||
| David Joseph Gaffin | ALKS | Ordinary Shares | Sale | -0.85% | $59,576 | $29.29 | -2,034 | 237,660 | 02 Mar 2026 | Direct |
| David Joseph Gaffin | ALKS | Restricted Stock Unit Award | Award | 36,364 | 36,364 | 02 Mar 2026 | Direct | |||
| David Joseph Gaffin | ALKS | Employee Stock Option (Right to Buy) | Award | 78,292 | 78,292 | 02 Mar 2026 | Direct | |||
| Samuel Joseph Parisi | ALKS | Ordinary Shares | Tax liability | -5.24% | -808 | 14,607 | 26 Feb 2026 | Direct | ||
| Samuel Joseph Parisi | ALKS | Ordinary Shares | Options Exercise | 21.7% | 2,747 | 15,415 | 26 Feb 2026 | Direct | ||
| Samuel Joseph Parisi | ALKS | Restricted Stock Unit Award | Options Exercise | -33.3% | -2,747 | 5,493 | 26 Feb 2026 | Direct | ||
| Christian Todd Nichols | ALKS | Ordinary Shares | Tax liability | -2.03% | -2,403 | 115,769 | 26 Feb 2026 | Direct | ||
| Christian Todd Nichols | ALKS | Ordinary Shares | Options Exercise | 4.8% | 5,410 | 118,172 | 26 Feb 2026 | Direct | ||
| Christian Todd Nichols | ALKS | Restricted Stock Unit Award | Options Exercise | -33.3% | -5,410 | 10,819 | 26 Feb 2026 | Direct | ||
| Blair C. Jackson | ALKS | Ordinary Shares | Tax liability | -1.51% | -3,695 | 241,308 | 26 Feb 2026 | Direct | ||
| Blair C. Jackson | ALKS | Ordinary Shares | Options Exercise | 3.52% | 8,322 | 245,003 | 26 Feb 2026 | Direct | ||
| Blair C. Jackson | ALKS | Restricted Stock Unit Award | Options Exercise | -33.3% | -8,322 | 16,645 | 26 Feb 2026 | Direct | ||
| Craig C. Hopkinson | ALKS | Ordinary Shares | Tax liability | -3.16% | -3,049 | 93,389 | 26 Feb 2026 | Direct | ||
| Craig C. Hopkinson | ALKS | Ordinary Shares | Options Exercise | 7.67% | 6,866 | 96,438 | 26 Feb 2026 | Direct | ||
| Craig C. Hopkinson | ALKS | Restricted Stock Unit Award | Options Exercise | -33.3% | -6,866 | 13,732 | 26 Feb 2026 | Direct | ||
| David Joseph Gaffin | ALKS | Ordinary Shares | Tax liability | -1.26% | -3,049 | 239,694 | 26 Feb 2026 | Direct | ||
| David Joseph Gaffin | ALKS | Ordinary Shares | Options Exercise | 2.91% | 6,866 | 242,743 | 26 Feb 2026 | Direct | ||
| David Joseph Gaffin | ALKS | Restricted Stock Unit Award | Options Exercise | -33.3% | -6,866 | 13,732 | 26 Feb 2026 | Direct | ||
| Samuel Joseph Parisi | ALKS | Ordinary Shares | Tax liability | -5.04% | -672 | 12,668 | 23 Feb 2026 | Direct | ||
| Samuel Joseph Parisi | ALKS | Ordinary Shares | Options Exercise | 20.6% | 2,283 | 13,340 | 23 Feb 2026 | Direct | ||
| Samuel Joseph Parisi | ALKS | Restricted Stock Unit Award | Options Exercise | -50% | -2,283 | 2,284 | 23 Feb 2026 | Direct | ||
| Christian Todd Nichols | ALKS | Ordinary Shares | Tax liability | -2.46% | -2,845 | 112,762 | 23 Feb 2026 | Direct | ||
| Christian Todd Nichols | ALKS | Ordinary Shares | Options Exercise | 5.87% | 6,407 | 115,607 | 23 Feb 2026 | Direct | ||
| Christian Todd Nichols | ALKS | Restricted Stock Unit Award | Options Exercise | -50% | -6,407 | 6,408 | 23 Feb 2026 | Direct | ||
| Blair C. Jackson | ALKS | Ordinary Shares | Tax liability | -1.61% | -3,880 | 236,681 | 23 Feb 2026 | Direct | ||
| Blair C. Jackson | ALKS | Ordinary Shares | Options Exercise | 3.77% | 8,738 | 240,561 | 23 Feb 2026 | Direct | ||
| Blair C. Jackson | ALKS | Restricted Stock Unit Award | Options Exercise | -50% | -8,738 | 8,738 | 23 Feb 2026 | Direct | ||
| Craig C. Hopkinson | ALKS | Ordinary Shares | Tax liability | -3.67% | -3,414 | 89,572 | 23 Feb 2026 | Direct | ||
| Craig C. Hopkinson | ALKS | Ordinary Shares | Options Exercise | 9.01% | 7,689 | 92,986 | 23 Feb 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.