$ALKS

$44.44 +$0.81 (1.86%) Close

$ALKS Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 167.8M shares outstanding

Who owns ALKS?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 54.4%

BlackRock, Inc. 17.4% · Baker Bros. Advisors LP 6.0%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

421

+33 vs last qtr

Net shares bought

+1.4M

by institutions in Q2 2026

New / sold out

89 / 56

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +2.2M
Price T Rowe Associates Inc /MD/ +2.1M

Biggest sellers in Q2 2026

Jpmorgan Chase & Co −3.8M
American Century Companies Inc −2.1M

Who is planning to sell?

Notices of proposed sale, last 12 months

$9.39M

27 notices from 6 people

Shares covered

237.3K

0.14% of the company

Arranged in advance

76%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Hopkinson Craig C. Officer 10b5-1 $3.66M
snyderman nancy lynn MD Officer $2.24M

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2012–FY2025

+47.1%

+4.38% a year

Each share's claim on the business

−32.0%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$200M vs $789M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years63% 3–5 years5% 1–3 years17% Under 1 year15%

Quarterly turnover

12.4%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting ALKS on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	29.2M	17.43%	+921.3K (+3.3%)	≤2021	0.0%
Shares held by quarter Peak holding29.2M (Q2'26) Change over 8 quarters+957.3K Share of the company17.430% BlackRock, Inc.'s full portfolio →
BB Baker Bros. Advisors LP	10.0M	5.97%	Unchanged	2024	2.6%
Shares held by quarter Peak holding10.0M (Q4'25) Change over 8 quarters+5.8M Share of the company5.970% Baker Bros. Advisors LP's full portfolio →

BlackRock, Inc.

29.2M

% of company

17.43%

Change vs last qtr

+921.3K (+3.3%)

Held since

≤2021

Baker Bros. Advisors LP

10.0M

% of company

5.97%

Change vs last qtr

Unchanged

Held since

2024

28 more super investors behind a free account

See every manager holding Alkermes Plc, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ALKS on Form N-PORT; together they hold 18.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$278M	5.3M	3.16%	0.01%	June 30, 2026
VS Vanguard Small-Cap Index Fund Vanguard Index Funds	$200M	3.8M	2.28%	0.11%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$278M

% of company

3.16%

% of the fund

0.01%

As of

June 30, 2026

Vanguard Small-Cap Index Fund

Vanguard Index Funds

Position value

$200M

% of company

2.28%

% of the fund

0.11%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Alkermes Plc and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
PR Pops Richard F Insider	340.7K	0.20%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.200% Pops Richard F's insider activity →

Pops Richard F

Insider

340.7K

% of company

0.20%

Change vs last qtr

—

Held since

—

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