Alkermes Plc (ALKS)

Over the last 90 days, Alkermes Plc has seen significant insider selling, with a net value of -$687,007. Notable transactions include multiple planned and proposed sales by executives like Craig C. Hopkinson and David Joseph Gaffin. The company's stock has performed strongly, up 58.6% in 90 days, reaching near its 52-week high.
Ticker: ALKS Exchange: NSM


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Insider trades have triggered activity signals for Alkermes Plc. Upgrade to see score, net flow, insiders and the full signal context.

Top insiders
Trades
Gaffin David Joseph
EVP, CLO, Alkermes, Inc.
2 sales — total 200,000 USD
Planned sale 6 Jul 2026
Value US$1,982,447.42 | Price 262.72 | Shares 35,632
Proposed sale 6 Jul 2026
Value US$1,169,776.51 | Price 275.18 | Shares 99,732
Planned sale 1 Jul 2026
Value US$4,600,814.13 | Price 50.32 | Shares 12,309
Planned sale 1 Jul 2026
Value US$3,780,241.70 | Price 372.37 | Shares 42,852
Proposed sale 1 Jul 2026
Value US$100,000.00 | Price 51.51 | Shares 1,000
Planned sale 12 Jun 2026
Value US$90,200.00 | Price 45.10 | Shares 2,000
Proposed sale 12 Jun 2026
Value US$90,200.00 | Price 45.10 | Shares 2,000
Planned sale 4 Jun 2026
Value US$87,563.70 | Price 43.05 | Shares 2,034
Planned sale 4 Jun 2026
Value US$87,563.70 | Price 43.05 | Shares 2,034
Proposed sale 4 Jun 2026
Value US$87,563.70 | Price 43.05 | Shares 2,034
Planned sale 1 Jun 2026
Value US$375,043.50 | Price 41.67 | Shares 9,000
Proposed sale 1 Jun 2026
Value US$375,043.23 | Price 41.67 | Shares 9,000
Proposed sale 1 Jun 2026
Value US$375,043.23 | Price 41.67 | Shares 9,000
Sale 29 May 2026
Value US$687,007.26 | Price 42.36 | Shares 16,217
Planned sale 4 May 2026
Value US$67,528.80 | Price 33.20 | Shares 2,034
Proposed sale 4 May 2026
Value US$67,528.80 | Price 33.20 | Shares 2,034
Planned sale 1 May 2026
Value US$300,559.50 | Price 33.40 | Shares 9,000
Proposed sale 1 May 2026
Value US$300,559.55 | Price 33.40 | Shares 9,000
Planned sale 6 Apr 2026
Value US$70,315.38 | Price 34.57 | Shares 2,034
Proposed sale 6 Apr 2026
Value US$70,315.38 | Price 34.57 | Shares 2,034
Planned sale 1 Apr 2026
Value US$319,604.40 | Price 35.51 | Shares 9,000
Proposed sale 1 Apr 2026
Value US$319,604.00 | Price 35.51 | Shares 9,000
Planned sale 3 Mar 2026
Value US$60,531.84 | Price 29.76 | Shares 2,034
Proposed sale 3 Mar 2026
Value US$60,531.84 | Price 29.76 | Shares 2,034
Planned sale 2 Mar 2026
Value US$201,808.10 | Price 29.29 | Shares 6,890
Planned sale 2 Mar 2026
Value US$180,000.00 | Price 30.00 | Shares 6,000
Proposed sale 2 Mar 2026
Value US$180,000.00 | Price 30.00 | Shares 6,000
Planned sale 2 Mar 2026
Value US$59,575.86 | Price 29.29 | Shares 2,034
Proposed sale 2 Mar 2026
Value US$59,575.86 | Price 29.29 | Shares 2,034
Planned sale 2 Mar 2026
Value US$267,485.40 | Price 29.72 | Shares 9,000
Proposed sale 2 Mar 2026
Value US$267,485.14 | Price 29.72 | Shares 9,000
Proposed sale 2 Feb 2026
Value US$2,115,674.45 | Price 34.57 | Shares 61,200
Planned sale 2 Feb 2026
Value US$1,116,877.29 | Price 34.78 | Shares 32,113
Planned sale 2 Feb 2026
Value US$998,795.22 | Price 34.34 | Shares 29,087
Proposed sale 2 Feb 2026
Value US$305,384.28 | Price 33.93 | Shares 9,000
Planned sale 2 Feb 2026
Value US$134,160.00 | Price 33.54 | Shares 4,000
Planned sale 2 Feb 2026
Value US$171,224.50 | Price 34.24 | Shares 5,000
Proposed sale 8 Jan 2026
Value US$150,004.95 | Price 30.00 | Shares 5,000
Planned sale 8 Jan 2026
Value US$150,005.00 | Price 30.00 | Shares 5,000
Proposed sale 2 Jan 2026
Value US$112,000.00 | Price 28.00 | Shares 4,000
Planned sale 2 Jan 2026
Value US$112,000.00 | Price 28.00 | Shares 4,000
Planned sale 3 Dec 2025
Value US$112,447.12 | Price 30.00 | Shares 3,748
Proposed sale 3 Dec 2025
Value US$112,447.26 | Price 30.00 | Shares 3,748
Proposed sale 1 Dec 2025
Value US$117,200.00 | Price 29.30 | Shares 4,000
Planned sale 1 Dec 2025
Value US$117,200.00 | Price 29.30 | Shares 4,000
Proposed sale 3 Nov 2025
Value US$273,441.50 | Price 30.38 | Shares 9,000
Planned sale 3 Nov 2025
Value US$273,441.60 | Price 30.38 | Shares 9,000
Proposed sale 15 Oct 2025
Value US$283,776.70 | Price 31.53 | Shares 9,000
Planned sale 15 Oct 2025
Value US$283,776.30 | Price 31.53 | Shares 9,000
Proposed sale 10 Jun 2025
Value US$103,654.06 | Price 31.09 | Shares 3,334
Planned sale 10 Jun 2025
Value US$103,654.06 | Price 31.09 | Shares 3,334
Planned sale 9 Jun 2025
Value US$106,489.35 | Price 31.95 | Shares 3,333
Proposed sale 9 Jun 2025
Value US$106,489.35 | Price 31.95 | Shares 3,333
Planned sale 28 Feb 2025
Value US$65,892.00 | Price 34.00 | Shares 1,938
Planned sale 25 Feb 2025
Value US$131,978.18 | Price 35.26 | Shares 3,743
Planned sale 20 Feb 2025
Value US$47,360.63 | Price 35.69 | Shares 1,327
Planned sale 13 Feb 2025
Value US$3,920,001.41 | Price 36.02 | Shares 108,833
Planned sale 13 Feb 2025
Value US$1,210,696.22 | Price 34.02 | Shares 35,586
Proposed sale 13 Feb 2025
Value US$5,130,694.15 | Price 35.53 | Shares 144,419
Planned sale 12 Feb 2025
Value US$1,101,470.05 | Price 33.27 | Shares 33,108
Planned sale 12 Feb 2025
Value US$5,616,807.51 | Price 32.69 | Shares 171,813
Proposed sale 12 Feb 2025
Value US$6,718,276.17 | Price 32.78 | Shares 204,921
Planned sale 30 Jan 2025
Value US$3,234,381.53 | Price 32.05 | Shares 100,918
Proposed sale 30 Jan 2025
Value US$3,234,380.13 | Price 32.05 | Shares 100,918
Proposed sale 9 Dec 2024
Value US$85,708.35 | Price 31.85 | Shares 2,691
Planned sale 9 Dec 2024
Value US$85,708.35 | Price 31.85 | Shares 2,691
Proposed sale 9 Dec 2024
Value US$1,961,403.62 | Price 32.07 | Shares 61,151
Planned sale 9 Dec 2024
Value US$1,961,406.09 | Price 32.07 | Shares 61,151
Proposed sale 5 Dec 2024
Value US$290,461.50 | Price 31.50 | Shares 9,221
Planned sale 5 Dec 2024
Value US$290,461.50 | Price 31.50 | Shares 9,221
Proposed sale 4 Dec 2024
Value US$441,550.16 | Price 30.77 | Shares 14,349
Planned sale 4 Dec 2024
Value US$441,550.30 | Price 30.77 | Shares 14,349
Proposed sale 27 Nov 2024
Value US$151,813.20 | Price 29.15 | Shares 5,208
Planned sale 27 Nov 2024
Value US$151,813.20 | Price 29.15 | Shares 5,208
Proposed sale 11 Nov 2024
Value US$1,774,578.08 | Price 30.08 | Shares 58,996
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value
Number of shares Price Value Details
2026-07-06 2026-07-06 PlS Planned sale

EVP, CLO, Alkermes, Inc.

Officer
35,632 +26.0%
262.72
US$1,982,447
35,632 +26.0% 262.72 US$1,982,447
2026-07-06 2026-07-06 PrS Proposed sale

Officer

Officer
99,732
275.18
US$1,169,777
99,732 275.18 US$1,169,777
2026-07-01 2026-07-01 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
12,309 -32.1%
50.32
US$4,600,814
12,309 -32.1% 50.32 US$4,600,814
2026-07-01 2026-07-01 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
1,000 -10.1%
51.46
US$100,000
1,000 -10.1% 51.46 US$100,000
2026-07-01 2026-07-01 PrS Proposed sale

Officer

Officer
1,000
51.51
US$100,000
1,000 51.51 US$100,000
2026-06-12 2026-06-12 PlS Planned sale Non-Executive Director
2,000 -7.2%
45.10
US$90,200
2,000 -7.2% 45.10 US$90,200
2026-06-12 2026-06-12 PrS Proposed sale

Officer

Officer
2,000
45.10
US$90,200
2,000 45.10 US$90,200
2026-06-04 2026-06-04 PlS Planned sale

EVP, CLO, Alkermes, Inc.

Officer
2,034 -0.9%
43.05
US$87,564
2,034 -0.9% 43.05 US$87,564
2026-06-04 2026-06-04 PlS Planned sale

EVP, CLO, Alkermes, Inc.

Officer
2,034 -0.9%
43.05
US$87,564
2,034 -0.9% 43.05 US$87,564
2026-06-04 2026-06-04 PrS Proposed sale

Officer

Officer
2,034
43.05
US$87,564
2,034 43.05 US$87,564
2026-06-01 2026-06-01 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
9,000 -10.4%
41.67
US$375,044
9,000 -10.4% 41.67 US$375,044
2026-06-01 2026-06-01 PrS Proposed sale

Officer

Officer
9,000
41.67
US$375,043
9,000 41.67 US$375,043
2026-06-01 2026-06-01 PrS Proposed sale

Officer

Officer
9,000
41.67
US$375,043
9,000 41.67 US$375,043
2026-05-29 2026-05-29 S Sale

VP, Finance (Interim PAO)

Officer
16,217 -67.8%
42.36
US$687,007
16,217 -67.8% 42.36 US$687,007
2026-05-04 2026-05-04 PlS Planned sale

EVP, CLO, Alkermes, Inc.

Officer
2,034 -0.9%
33.20
US$67,529
2,034 -0.9% 33.20 US$67,529
2026-05-04 2026-05-04 PrS Proposed sale

Officer

Officer
2,034
33.20
US$67,529
2,034 33.20 US$67,529
2026-05-01 2026-05-01 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
9,000 -10.0%
33.40
US$300,560
9,000 -10.0% 33.40 US$300,560
2026-05-01 2026-05-01 PrS Proposed sale

Officer

Officer
9,000
33.40
US$300,560
9,000 33.40 US$300,560
2026-04-06 2026-04-06 PlS Planned sale

EVP, CLO, Alkermes, Inc.

Officer
2,034 -0.9%
34.57
US$70,315
2,034 -0.9% 34.57 US$70,315
2026-04-06 2026-04-06 PrS Proposed sale

Officer

Officer
2,034
34.57
US$70,315
2,034 34.57 US$70,315
2026-04-01 2026-04-01 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
9,000 -9.5%
35.51
US$319,604
9,000 -9.5% 35.51 US$319,604
2026-04-01 2026-04-01 PrS Proposed sale

Officer

Officer
9,000
35.51
US$319,604
9,000 35.51 US$319,604
2026-03-04 2026-03-03 PlS Planned sale

EVP, CLO, Alkermes, Inc.

Officer
2,034 -0.9%
29.76
US$60,532
2,034 -0.9% 29.76 US$60,532
2026-03-03 2026-03-03 PrS Proposed sale

Officer

Officer
2,034
29.76
US$60,532
2,034 29.76 US$60,532
2026-03-04 2026-03-02 PlS Planned sale

VP, Finance (Interim PAO)

Officer
6,890 -47.2%
29.29
US$201,808
6,890 -47.2% 29.29 US$201,808
2026-03-04 2026-03-02 PlS Planned sale

SVP, Chief Commercial Officer

Officer
6,000 -5.2%
30.00
US$180,000
6,000 -5.2% 30.00 US$180,000
2026-03-04 2026-03-02 PlS Planned sale

EVP, CLO, Alkermes, Inc.

Officer
2,034 -0.8%
29.29
US$59,576
2,034 -0.8% 29.29 US$59,576
2026-03-04 2026-03-02 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
9,000 -9.1%
29.72
US$267,485
9,000 -9.1% 29.72 US$267,485
2026-03-02 2026-03-02 PrS Proposed sale

Officer

Officer
6,000
30.00
US$180,000
6,000 30.00 US$180,000
2026-03-02 2026-03-02 PrS Proposed sale

Officer

Officer
2,034
29.29
US$59,576
2,034 29.29 US$59,576
2026-03-02 2026-03-02 PrS Proposed sale

Officer

Officer
9,000
29.72
US$267,485
9,000 29.72 US$267,485
2026-02-02 2026-02-02 PrS Proposed sale

Officer

Officer
61,200
34.57
US$2,115,674
61,200 34.57 US$2,115,674
2026-02-02 2026-02-02 PrS Proposed sale

Officer

Officer
9,000
33.93
US$305,384
9,000 33.93 US$305,384
2026-02-02 2026-02-02 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
4,000 -6.5%
33.54
US$134,160
4,000 -6.5% 33.54 US$134,160
2026-02-02 2026-02-02 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
5,000 -7.5%
34.24
US$171,224
5,000 -7.5% 34.24 US$171,224
2026-02-02 2026-02-02 PlS Planned sale Non-Executive Director
32,113 -23.6%
34.78
US$1,116,877
32,113 -23.6% 34.78 US$1,116,877
2026-02-02 2026-02-02 PlS Planned sale Non-Executive Director
29,087 -17.6%
34.34
US$998,795
29,087 -17.6% 34.34 US$998,795
2026-01-08 2026-01-08 PrS Proposed sale

Officer

Officer
5,000
30.00
US$150,005
5,000 30.00 US$150,005
2026-01-08 2026-01-08 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
5,000 -7.5%
30.00
US$150,005
5,000 -7.5% 30.00 US$150,005
2026-01-02 2026-01-02 PrS Proposed sale

Officer

Officer
4,000
28.00
US$112,000
4,000 28.00 US$112,000
2026-01-02 2026-01-02 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
4,000 -6.1%
28.00
US$112,000
4,000 -6.1% 28.00 US$112,000
2025-12-05 2025-12-03 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
3,748 -5.4%
30.00
US$112,447
3,748 -5.4% 30.00 US$112,447
2025-12-03 2025-12-03 PrS Proposed sale

Officer

Officer
3,748
30.00
US$112,447
3,748 30.00 US$112,447
2025-12-01 2025-12-01 PrS Proposed sale

Officer

Officer
4,000
29.30
US$117,200
4,000 29.30 US$117,200
2025-12-01 2025-12-01 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
4,000 -5.7%
29.30
US$117,200
4,000 -5.7% 29.30 US$117,200
2025-11-03 2025-11-03 PrS Proposed sale

Officer

Officer
9,000
30.38
US$273,442
9,000 30.38 US$273,442
2025-11-03 2025-11-03 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
9,000 -11.4%
30.38
US$273,442
9,000 -11.4% 30.38 US$273,442
2025-10-15 2025-10-15 PrS Proposed sale

Officer

Officer
9,000
31.53
US$283,777
9,000 31.53 US$283,777
2025-10-15 2025-10-15 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
9,000 -10.9%
31.53
US$283,776
9,000 -10.9% 31.53 US$283,776
2025-06-10 2025-06-10 PrS Proposed sale

Officer

Officer
3,334
31.09
US$103,654
3,334 31.09 US$103,654
2025-06-10 2025-06-10 PlS Planned sale

SVP, Chief Commercial Officer

Officer
3,334 -3.7%
31.09
US$103,654
3,334 -3.7% 31.09 US$103,654
2025-06-10 2025-06-09 PlS Planned sale

SVP, Chief Commercial Officer

Officer
3,333 -3.6%
31.95
US$106,489
3,333 -3.6% 31.95 US$106,489
2025-06-09 2025-06-09 PrS Proposed sale

Officer

Officer
3,333
31.95
US$106,489
3,333 31.95 US$106,489
2025-02-28 2025-02-28 PlS Planned sale

VP, Finance (Interim PAO)

Officer
1,938 -20.1%
34.00
US$65,892
1,938 -20.1% 34.00 US$65,892
2025-02-25 2025-02-25 PlS Planned sale

VP, Finance (Interim PAO)

Officer
3,743 -32.7%
35.26
US$131,978
3,743 -32.7% 35.26 US$131,978
2025-02-20 2025-02-20 PlS Planned sale

VP, Finance (Interim PAO)

Officer
1,327 -14.7%
35.69
US$47,361
1,327 -14.7% 35.69 US$47,361
2025-02-14 2025-02-13 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
108,833 -65.3%
36.02
US$3,920,001
108,833 -65.3% 36.02 US$3,920,001
2025-02-14 2025-02-13 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
35,586 -17.6%
34.02
US$1,210,696
35,586 -17.6% 34.02 US$1,210,696
2025-02-13 2025-02-13 PrS Proposed sale

Officer

Officer
144,419
35.53
US$5,130,694
144,419 35.53 US$5,130,694
2025-02-14 2025-02-12 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
33,108 -36.4%
33.27
US$1,101,470
33,108 -36.4% 33.27 US$1,101,470
2025-02-14 2025-02-12 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
171,813 -65.4%
32.69
US$5,616,808
171,813 -65.4% 32.69 US$5,616,808
2025-02-12 2025-02-12 PrS Proposed sale

Officer

Officer
204,921
32.78
US$6,718,276
204,921 32.78 US$6,718,276
2025-01-31 2025-01-30 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
100,918 -69.5%
32.05
US$3,234,382
100,918 -69.5% 32.05 US$3,234,382
2025-01-30 2025-01-30 PrS Proposed sale

Officer

Officer
100,918
32.05
US$3,234,380
100,918 32.05 US$3,234,380
2024-12-09 2024-12-09 PrS Proposed sale

Director

Non-Executive Director
2,691
31.85
US$85,708
2,691 31.85 US$85,708
2024-12-09 2024-12-09 PrS Proposed sale

Officer

Officer
61,151
32.07
US$1,961,404
61,151 32.07 US$1,961,404
2024-12-09 2024-12-09 PlS Planned sale Non-Executive Director
2,691 -10.5%
31.85
US$85,708
2,691 -10.5% 31.85 US$85,708
2024-12-09 2024-12-09 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
61,151 -56.2%
32.07
US$1,961,406
61,151 -56.2% 32.07 US$1,961,406
2024-12-05 2024-12-05 PrS Proposed sale

Officer

Officer
9,221
31.50
US$290,462
9,221 31.50 US$290,462
2024-12-05 2024-12-05 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
9,221 -13.4%
31.50
US$290,462
9,221 -13.4% 31.50 US$290,462
2024-12-04 2024-12-04 PrS Proposed sale

Officer

Officer
14,349
30.77
US$441,550
14,349 30.77 US$441,550
2024-12-04 2024-12-04 PlS Planned sale

EVP R&D, Chief Medical Officer

Officer
14,349 -17.2%
30.77
US$441,550
14,349 -17.2% 30.77 US$441,550
2024-11-27 2024-11-27 PrS Proposed sale

Officer

Officer
5,208
29.15
US$151,813
5,208 29.15 US$151,813
2024-11-27 2024-11-27 PlS Planned sale

SVP, Chief Commercial Officer

Officer
5,208 -7.9%
29.15
US$151,813
5,208 -7.9% 29.15 US$151,813
2024-11-12 2024-11-11 PrS Proposed sale

Officer

Officer
58,996
30.08
US$1,774,578
58,996 30.08 US$1,774,578