Insider Trades & Whales

Insider trades are parsed from SEC Form 4 filings (first-party). The ownership breakdown below is computed first-hand from SEC 13F-HR + Form 4 (institutions from 13F, insiders from Form 4). For the full filer list and quarter-over-quarter position changes, see the Institutional (13F) tab.

Ownership Breakdown

Insiders 0.42%Institutions 25.43%67 filers

Top Institutions

Form 4 Transactions

50 most recent

Date	Insider	Title	Code	Shares	Price	Value
Aug 17, 2026	Nichols Christian Todd	SVP, Chief Commercial Officer	S	664	$49.6526	$32.97K
Aug 17, 2026	Nichols Christian Todd	SVP, Chief Commercial Officer	S	6,912	$49.1851	$339.97K
Aug 5, 2026	Jackson Blair Curtis	President & CEO, Alkermes plc	A	124,305	$0.0000	$0.00
Aug 5, 2026	Jackson Blair Curtis	President & CEO, Alkermes plc	A	93,229	$0.0000	$0.00
Aug 3, 2026	Gaffin David Joseph	EVP, CLO, Alkermes, Inc.	S	2,034	$48.5800	$98.81K
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	4,896	$0.0000	$0.00
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	104	$0.0000	$0.00
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	S	9,000	$48.5800	$437.22K
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	4,896	$24.5900	$120.39K
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	104	$19.3400	$2.01K
Aug 3, 2026	snyderman nancy lynn MD	Director	M	16,524	$0.0000	$0.00
Aug 3, 2026	snyderman nancy lynn MD	Director	M	27,948	$0.0000	$0.00
Aug 3, 2026	snyderman nancy lynn MD	Director	S	44,472	$50.3480	$2.24M
Aug 3, 2026	snyderman nancy lynn MD	Director	M	16,524	$46.7200	$772.00K
Aug 3, 2026	snyderman nancy lynn MD	Director	M	27,948	$46.7200	$1.31M
Jul 6, 2026	Gaffin David Joseph	EVP, CLO, Alkermes, Inc.	S	2,034	$54.0300	$109.90K
Jul 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	5,000	$0.0000	$0.00
Jul 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	S	700	$52.1314	$36.49K
Jul 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	S	8,300	$51.4613	$427.13K
Jul 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	5,000	$19.3400	$96.70K
Jun 12, 2026	Wright Christopher I	Director	S	2,000	$45.1000	$90.20K
Jun 4, 2026	Gaffin David Joseph	EVP, CLO, Alkermes, Inc.	S	2,034	$43.0500	$87.56K
Jun 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	5,000	$0.0000	$0.00
Jun 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	S	9,000	$41.6715	$375.04K
Jun 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	5,000	$19.3400	$96.70K
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	M	12,825	$0.0000	$0.00
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	M	3,392	$0.0000	$0.00
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	S	16,217	$42.3634	$687.01K
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	M	12,825	$19.3400	$248.03K
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	M	3,392	$20.0300	$67.94K
May 21, 2026	Cooke Shane	Director	M	6,142	–	–
May 21, 2026	Cooke Shane	Director	F	3,207	$36.9500	$118.50K
May 21, 2026	Cooke Shane	Director	M	6,142	–	–
May 21, 2026	GAYNOR RICHARD	Director	M	6,142	–	–
May 21, 2026	GAYNOR RICHARD	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	GAYNOR RICHARD	Director	M	6,142	–	–
May 21, 2026	LAURENCIN CATO T	Director	M	6,142	–	–
May 21, 2026	LAURENCIN CATO T	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	LAURENCIN CATO T	Director	M	6,142	–	–
May 21, 2026	Lurker Nancy	Director	M	6,142	–	–
May 21, 2026	Lurker Nancy	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	Lurker Nancy	Director	M	6,142	–	–
May 21, 2026	MCKEON BRIAN P	Director	M	6,142	–	–
May 21, 2026	MCKEON BRIAN P	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	MCKEON BRIAN P	Director	M	6,142	–	–
May 21, 2026	snyderman nancy lynn MD	Director	M	6,142	–	–
May 21, 2026	snyderman nancy lynn MD	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	snyderman nancy lynn MD	Director	M	6,142	–	–
May 21, 2026	Wilson Frank Anders	Director	M	6,142	–	–
May 21, 2026	Wilson Frank Anders	Director	F	1,475	$36.9500	$54.50K

Insider Trades & Whales

Ownership Breakdown

Insiders 0.42%Institutions 25.43%67 filers

Top Institutions

Form 4 Transactions

50 most recent

Date	Insider	Title	Code	Shares	Price	Value
Aug 17, 2026	Nichols Christian Todd	SVP, Chief Commercial Officer	S	664	$49.6526	$32.97K
Aug 17, 2026	Nichols Christian Todd	SVP, Chief Commercial Officer	S	6,912	$49.1851	$339.97K
Aug 5, 2026	Jackson Blair Curtis	President & CEO, Alkermes plc	A	124,305	$0.0000	$0.00
Aug 5, 2026	Jackson Blair Curtis	President & CEO, Alkermes plc	A	93,229	$0.0000	$0.00
Aug 3, 2026	Gaffin David Joseph	EVP, CLO, Alkermes, Inc.	S	2,034	$48.5800	$98.81K
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	4,896	$0.0000	$0.00
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	104	$0.0000	$0.00
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	S	9,000	$48.5800	$437.22K
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	4,896	$24.5900	$120.39K
Aug 3, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	104	$19.3400	$2.01K
Aug 3, 2026	snyderman nancy lynn MD	Director	M	16,524	$0.0000	$0.00
Aug 3, 2026	snyderman nancy lynn MD	Director	M	27,948	$0.0000	$0.00
Aug 3, 2026	snyderman nancy lynn MD	Director	S	44,472	$50.3480	$2.24M
Aug 3, 2026	snyderman nancy lynn MD	Director	M	16,524	$46.7200	$772.00K
Aug 3, 2026	snyderman nancy lynn MD	Director	M	27,948	$46.7200	$1.31M
Jul 6, 2026	Gaffin David Joseph	EVP, CLO, Alkermes, Inc.	S	2,034	$54.0300	$109.90K
Jul 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	5,000	$0.0000	$0.00
Jul 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	S	700	$52.1314	$36.49K
Jul 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	S	8,300	$51.4613	$427.13K
Jul 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	5,000	$19.3400	$96.70K
Jun 12, 2026	Wright Christopher I	Director	S	2,000	$45.1000	$90.20K
Jun 4, 2026	Gaffin David Joseph	EVP, CLO, Alkermes, Inc.	S	2,034	$43.0500	$87.56K
Jun 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	5,000	$0.0000	$0.00
Jun 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	S	9,000	$41.6715	$375.04K
Jun 1, 2026	Hopkinson Craig C.	EVP R&D, Chief Medical Officer	M	5,000	$19.3400	$96.70K
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	M	12,825	$0.0000	$0.00
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	M	3,392	$0.0000	$0.00
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	S	16,217	$42.3634	$687.01K
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	M	12,825	$19.3400	$248.03K
May 29, 2026	Parisi Samuel Joseph	VP, Finance (Interim PAO)	M	3,392	$20.0300	$67.94K
May 21, 2026	Cooke Shane	Director	M	6,142	–	–
May 21, 2026	Cooke Shane	Director	F	3,207	$36.9500	$118.50K
May 21, 2026	Cooke Shane	Director	M	6,142	–	–
May 21, 2026	GAYNOR RICHARD	Director	M	6,142	–	–
May 21, 2026	GAYNOR RICHARD	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	GAYNOR RICHARD	Director	M	6,142	–	–
May 21, 2026	LAURENCIN CATO T	Director	M	6,142	–	–
May 21, 2026	LAURENCIN CATO T	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	LAURENCIN CATO T	Director	M	6,142	–	–
May 21, 2026	Lurker Nancy	Director	M	6,142	–	–
May 21, 2026	Lurker Nancy	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	Lurker Nancy	Director	M	6,142	–	–
May 21, 2026	MCKEON BRIAN P	Director	M	6,142	–	–
May 21, 2026	MCKEON BRIAN P	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	MCKEON BRIAN P	Director	M	6,142	–	–
May 21, 2026	snyderman nancy lynn MD	Director	M	6,142	–	–
May 21, 2026	snyderman nancy lynn MD	Director	F	1,475	$36.9500	$54.50K
May 21, 2026	snyderman nancy lynn MD	Director	M	6,142	–	–
May 21, 2026	Wilson Frank Anders	Director	M	6,142	–	–
May 21, 2026	Wilson Frank Anders	Director	F	1,475	$36.9500	$54.50K