$MAZE

$31.69 +$0.62 (2.0%) Close

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

Ownership

13F as of Q2 2026 · 55.5M shares outstanding

Who owns MAZE?

By type of holder

Institutions 100.0% Insiders 0.0% Everyone else 0.0%

Concentration Top 10 holders own 58.1%

Frazier Life Sciences Management, L.P. 9.1% · TRV GP IV, LLC 8.1%

Institutional ownership

100.0%

+7.0 pts vs last qtr

Institutional holders

160

-5 vs last qtr

Net shares bought

+6.8M

by institutions in Q2 2026

New / sold out

38 / 43

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Jupiter Topco LLC NEW +3.4M
T. Rowe Price Investment Management, Inc. NEW +2.6M

Biggest sellers in Q2 2026

Janus Henderson Group PLC SOLD OUT −2.9M
Paradigm Biocapital Advisors LP SOLD OUT −2.7M

Who is planning to sell?

Notices of proposed sale, last 12 months

$25.7M

23 notices from 10 people

Shares covered

741.3K

1.33% of the company

Arranged in advance

81%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Harold Bernstein Officer 10b5-1 $9.88M
Coloma Jason V Officer 10b5-1 $5.6M

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, FY2024–FY2025

+1474.0%

+1474.04% a year

Each share's claim on the business

−93.6%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $26M

over 2 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+ years0% 3–5 years0% 1–3 years71% Under 1 year29%

Quarterly turnover

26.7%

of institutional shares changed hands

Top 10 managers, median time held

1.3 years

Super Investors

Investment managers reporting MAZE on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
FL Frazier Life Sciences Management, L.P.	5.0M	9.06%	+465.6K (+10.2%)	2025	3.3%
Shares held by quarter Peak holding5.0M (Q2'26) Change over 8 quarters+5.0M Share of the company9.060% Frazier Life Sciences Management, L.P.'s full portfolio →
TG TRV GP IV, LLC	4.5M	8.05%	Unchanged	2025	52.6%
Shares held by quarter Peak holding6.1M (Q1'25) Change over 8 quarters+4.5M Share of the company8.050% TRV GP IV, LLC's full portfolio →

Frazier Life Sciences Management, L.P.

5.0M

% of company

9.06%

Change vs last qtr

+465.6K (+10.2%)

Held since

2025

TRV GP IV, LLC

4.5M

% of company

8.05%

Change vs last qtr

Unchanged

Held since

2025

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting MAZE on Form N-PORT; together they hold 18.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$42.1M	1.4M	2.54%	0.00%	June 30, 2026
TR T. Rowe Price Capital Appreciation Fund T. Rowe Price Capital Appreciation Fund, Inc.	$29.2M	978.3K	1.76%	0.04%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$42.1M

% of company

2.54%

% of the fund

0.00%

As of

June 30, 2026

T. Rowe Price Capital Appreciation Fund

T. Rowe Price Capital Appreciation Fund, Inc.

Position value

$29.2M

% of company

1.76%

% of the fund

0.04%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Maze 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
LJ Lim Jonathan E Insider	328.7K	0.59%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.590% Lim Jonathan E's insider activity →
CJ Coloma Jason V Insider	234.4K	0.42%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.420% Coloma Jason V's insider activity →

Lim Jonathan E

Insider

328.7K

% of company

0.59%

Change vs last qtr

—

Held since

—

Coloma Jason V

Insider

234.4K

% of company

0.42%

Change vs last qtr

—

Held since

—

5 more holders behind a free account

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

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