$ZLAB

$24.34 +$0.31 (1.29%) Close

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

Ownership

13F as of Q2 2026 · 1.12B shares outstanding

Who owns ZLAB?

By type of holder

Institutions 3.9% Insiders 0.0% Everyone else 96.2%

Concentration Top 10 holders own 3.1%

RTW Investments, LP 0.6% · TCG Crossover Management, LLC 0.6%

Institutional ownership

3.9%

+1.3 pts vs last qtr

Institutional holders

-8 vs last qtr

Net shares bought

+14.8M

by institutions in Q2 2026

New / sold out

15 / 23

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

TCG Crossover Management, LLC NEW +6.1M
Woodline Partners LP NEW +2.2M

Biggest sellers in Q2 2026

UBS Group AG −434.7K
Citadel Advisors LLC −403.9K

Who is planning to sell?

Notices of proposed sale, last 12 months

$13.6M

39 notices from 6 people

Shares covered

670.1K

0.06% of the company

Arranged in advance

67%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Du Ying Officer $8.5M
Smiley Joshua L Former officer $2.88M

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, FY2020–FY2025

+41.0%

+7.12% a year

Each share's claim on the business

−29.1%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $343M

over 6 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+ years21% 3–5 years4% 1–3 years33% Under 1 year42%

Quarterly turnover

33.7%

of institutional shares changed hands

Top 10 managers, median time held

1.5 years

Super Investors

Investment managers reporting ZLAB on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
RI RTW Investments, LP	6.6M	0.59%	Unchanged	2024	1.1%
Shares held by quarter Peak holding7.0M (Q4'25) Change over 8 quarters+6.6M Share of the company0.590% RTW Investments, LP's full portfolio →
TC TCG Crossover Management, LLC	6.1M	0.55%	NEW	Q2 '26	2.8%
Shares held by quarter Peak holding6.1M (Q2'26) Change over 8 quarters+6.1M Share of the company0.550% TCG Crossover Management, LLC's full portfolio →

RTW Investments, LP

6.6M

% of company

0.59%

Change vs last qtr

Unchanged

Held since

2024

TCG Crossover Management, LLC

6.1M

% of company

0.55%

Change vs last qtr

NEW

Held since

Q2 '26

28 more super investors behind a free account

See every manager holding Zai Lab Ltd, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting ZLAB on Form N-PORT; together they hold 1.8% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
IC iShares Core MSCI Emerging Markets ETF iShares, Inc.	$30.3M	12.0M	1.08%	0.02%	August 31, 2026
BE Baron Emerging Markets Fund Baron Select Funds	$26M	1.4M	0.12%	0.65%	June 30, 2026

iShares Core MSCI Emerging Markets ETF

iShares, Inc.

Position value

$30.3M

% of company

1.08%

% of the fund

0.02%

As of

August 31, 2026

Baron Emerging Markets Fund

Baron Select Funds

Position value

$26M

% of company

0.12%

% of the fund

0.65%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Zai Lab Ltd and how much of the fund the position is.

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