PRIMECAP MANAGEMENT CO/CA/

Position in ALKS — Alkermes plc.

CIK 763212 PASADENA, CA

Position in ALKS

as of Mar 31, 2026 · filed May 11, 2026 Compact

Position Value

$89,814,046

+$18,064,932 QoQ

Shares Held

2,539,990

-0.9% QoQ

Ownership

1.52%

of shares outstanding

% of Portfolio

0.07%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

24 quarters on record

Voting authority Sole 96.9318776845578.ToString("F0")% Shared 0.ToString("F0")% None 3.068122315442187.ToString("F0")%

Healthcare · as of Mar 31, 2026

PRIMECAP MANAGEMENT CO/CA/ holds $1,252,175,954 across 3 Drug Manufacturers - Specialty & Generic names. ALKS ranks #2 (7.2% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ELAN	Elanco Animal Health Inc	45,840,956	$1,096,974,077
2	ALKS	Alkermes plc. This page	2,539,990	$89,814,046
3	NBIX	Neurocrine Biosciences Inc	496,340	$65,387,831

24 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$89,814,046	2,539,990	-0.9%	Shares	Sole	2026-05-11
2025-12-31	$71,749,114	2,564,300	-7.1%	Shares	Sole	2026-02-11
2025-09-30	$82,772,400	2,759,080	-4.9%	Shares	Sole	2025-11-12
2025-06-30	$83,040,811	2,902,510	-3.4%	Shares	Sole	2025-08-11
2025-03-31	$99,195,216	3,004,095	-3.0%	Shares	Sole	2025-05-09
2024-12-31	$89,026,867	3,095,510	-6.1%	Shares	Sole	2025-02-10
2024-09-30	$92,286,248	3,297,115	-2.6%	Shares	Sole	2024-11-08
2024-06-30	$81,597,659	3,385,795	-2.5%	Shares	Sole	2024-08-09
2024-03-31	$94,019,253	3,473,190	-2.6%	Shares	Sole	2024-05-14
2023-12-31	$98,910,437	3,565,625	-8.2%	Shares	Sole	2024-02-09
2023-09-30	$108,741,262	3,882,230	-5.9%	Shares	Sole	2023-11-13
2023-06-30	$129,151,312	4,126,240	-1.7%	Shares	Sole	2023-08-11
2023-03-31	$118,349,795	4,198,290	-12.6%	Shares	Sole	2023-05-15
2022-12-31	$125,511,012	4,803,330	-10.2%	Shares	Sole	2023-02-13
2022-09-30	$119,415,257	5,347,750	-0.8%	Shares	Sole	2022-11-14
2022-06-30	$160,515,222	5,388,225	-4.9%	Shares	Sole	2022-08-11
2022-03-31	$149,122,185	5,667,890	-6.7%	Shares	Sole	2022-05-11
2021-12-31	$141,308,686	6,075,180	-5.2%	Shares	Sole	2022-02-11
2021-09-30	$197,674,222	6,409,670	-2.3%	Shares	Sole	2021-11-12
2021-06-30	$160,812,458	6,558,420	-1.7%	Shares	Sole	2021-08-10
2021-03-31	$124,604,753	6,670,490	-6.4%	Shares	Sole	2021-05-14
2020-12-31	$142,158,912	7,125,760	-14.3%	Shares	Sole	2021-02-08
2020-06-30	$161,452,768	8,318,020	-7.6%	Shares	Sole	2020-08-13
2020-03-31	$129,779,754	8,999,983	—	Shares	Sole	2020-05-14
No filing history on record for this holder in this stock.