$HALO

$130.03 +$1.53 (1.19%) Close

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

Ownership

13F as of Q2 2026 · 113.5M shares outstanding

Who owns HALO?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 40.2%

BlackRock, Inc. 11.7% · Vanguard Capital Management LLC 4.7%

Institutional ownership

100.0%

0 pts vs last qtr

Institutional holders

670

+36 vs last qtr

Net shares bought

+2.6M

by institutions in Q2 2026

New / sold out

108 / 72

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +1.5M
Jupiter Topco LLC NEW +1.3M

Biggest sellers in Q2 2026

Jupiter Asset Management LTD −1.5M
Janus Henderson Group PLC SOLD OUT −1.2M

Who is planning to sell?

Notices of proposed sale, last 12 months

$53.4M

12 notices from 6 people

Shares covered

627.2K

0.55% of the company

Arranged in advance

86%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Helen Torley President, ceo, director 10b5-1 $41.4M
Cortney A Caudill Officer $6.26M

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, FY2016–FY2025

−3.2%

−0.36% a year

Each share's claim on the business

+3.3%

grew without buying or selling a share

Spent on buybacks vs paid in stock

$1.89B vs $321M

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+ years66% 3–5 years7% 1–3 years15% Under 1 year11%

Quarterly turnover

11.1%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting HALO on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	13.3M	11.69%	+6.0K (+0.0%)	≤2021	0.0%
Shares held by quarter Peak holding17.6M (Q4'24) Change over 8 quarters−4.2M Share of the company11.690% BlackRock, Inc.'s full portfolio →
VC Vanguard Capital Management LLC	5.4M	4.71%	+80.1K (+1.5%)	≤2021	0.0%
Shares held by quarter Peak holding5.4M (Q2'26) Change over 8 quarters+5.4M Share of the company4.710% Vanguard Capital Management LLC's full portfolio →

BlackRock, Inc.

13.3M

% of company

11.69%

Change vs last qtr

+6.0K (+0.0%)

Held since

≤2021

Vanguard Capital Management LLC

5.4M

% of company

4.71%

Change vs last qtr

+80.1K (+1.5%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Halozyme Therapeutics, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting HALO on Form N-PORT; together they hold 46.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core S&P Mid-Cap ETF iShares Trust	$318M	4.1M	3.58%	0.26%	June 30, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$295M	3.8M	3.32%	0.01%	June 30, 2026

iShares Core S&P Mid-Cap ETF

iShares Trust

Position value

$318M

% of company

3.58%

% of the fund

0.26%

As of

June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$295M

% of company

3.32%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Halozyme Therapeutics, Inc. 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
TH Torley Helen Insider	767.8K	0.68%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.680% Torley Helen's insider activity →
MC Matsui Connie Insider	183.0K	0.16%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.160% Matsui Connie's insider activity →

Torley Helen

Insider

767.8K

% of company

0.68%

Change vs last qtr

—

Held since

—

Matsui Connie

Insider

183.0K

% of company

0.16%

Change vs last qtr

—

Held since

—

13 more holders behind a free account

See every insider and 5%+ holder of Halozyme Therapeutics, Inc..

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