RTW INVESTMENTS, LP

Position in ALKS — Alkermes plc.

CIK 1493215 NEW YORK, NY

Position in ALKS

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$59,134,508

+$12,341,988 QoQ

Shares Held

1,672,356

0.0% QoQ

Ownership

1.00%

of shares outstanding

% of Portfolio

0.59%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Sep 2023

11 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Healthcare · as of Mar 31, 2026

RTW INVESTMENTS, LP holds $229,871,727 across 3 Drug Manufacturers - Specialty & Generic names. ALKS ranks #2 (25.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	NBIX	Neurocrine Biosciences Inc	1,062,072	$139,917,365
2	ALKS	Alkermes plc. This page	1,672,356	$59,134,508
3	AQST	Aquestive Therapeutics, Inc.	7,426,471	$30,819,854

11 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$59,134,508	1,672,356	0.0%	Shares	Sole	2026-05-15
2025-12-31	$46,792,520	1,672,356	0.0%	Shares	Sole	2026-02-17
2025-09-30	$50,170,680	1,672,356	-64.3%	Shares	Sole	2025-11-14
2025-06-30	$133,960,288	4,682,289	-32.0%	Shares	Sole	2025-08-14
2025-03-31	$227,332,727	6,884,698	-8.9%	Shares	Sole	2025-05-15
2024-12-31	$217,363,334	7,557,835	+13.6%	Shares	Sole	2025-02-14
2024-09-30	$186,246,383	6,654,033	-5.7%	Shares	Sole	2024-11-14
2024-06-30	$170,073,410	7,056,988	+16.6%	Shares	Sole	2024-08-14
2024-03-31	$163,889,359	6,054,280	+55.2%	Shares	Sole	2024-05-15
2023-12-31	$108,228,248	3,901,523	+338.8%	Shares	Sole	2024-02-14
2023-09-30	$24,902,934	889,073	—	Shares	Sole	2023-11-14
No filing history on record for this holder in this stock.