$MGTX

$9.40 +$0.22 (2.4%) Close

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

Ownership

13F as of Q2 2026 · 96.0M shares outstanding

Who owns MGTX?

By type of holder

Institutions 81.5% Insiders 0.0% Everyone else 18.5%

Concentration Top 10 holders own 81.1%

Sanofi 12.7% · Perceptive Life Sciences Master Fund, Ltd. 12.2%

Institutional ownership

81.5%

+11.4 pts vs last qtr

Institutional holders

156

+23 vs last qtr

Net shares bought

+10.9M

by institutions in Q2 2026

New / sold out

37 / 14

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Rubric Capital Management LP +2.1M
BlackRock, Inc. +1.6M

Biggest sellers in Q2 2026

Prosight Management, LP −2.5M
Logos Global Management LP SOLD OUT −700.0K

Who is planning to sell?

Notices of proposed sale, last 12 months

$4.64M

9 notices from 3 people

Shares covered

437.0K

0.45% of the company

Arranged in advance

100%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Alexandria Forbes Officer 10b5-1 $1.89M
Richard Giroux Officer 10b5-1 $1.83M

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

+113.2%

+16.35% a year

Each share's claim on the business

−53.1%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $143M

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+ years37% 3–5 years11% 1–3 years39% Under 1 year13%

Quarterly turnover

15.8%

of institutional shares changed hands

Top 10 managers, median time held

4.8 years

Super Investors

Investment managers reporting MGTX on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
S Sanofi	12.2M	12.70%	Unchanged	2024	30.9%
Shares held by quarter Peak holding12.2M (Q4'24) Change over 8 quarters+12.2M Share of the company12.700% Sanofi's full portfolio →
PA Perceptive Advisors LLC 13D · 12.6%	10.8M	11.23%	+460.6K (+4.5%)	≤2021	2.2%
Shares held by quarter Peak holding12.6M (Q2'25) Change over 8 quarters−1.8M Share of the company11.230% Disclosed stake13D · 12.6% Perceptive Advisors LLC's full portfolio →

Sanofi

12.2M

% of company

12.70%

Change vs last qtr

Unchanged

Held since

2024

Perceptive Advisors LLC

13D · 12.6%

10.8M

% of company

11.23%

Change vs last qtr

+460.6K (+4.5%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding MeiraGTx Holdings PLC, how their position has changed, and how long they've held it.

Institutional Funds

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

Fund	Position value	Shares	% of company	% of the fund	As of
NQ Nuveen Quant Small Cap Equity Fund TIAA-CREF Funds	$6.21M	526.6K	0.55%	0.15%	July 31, 2026
VR Vanguard Russell 2000 Index Fund Vanguard Scottsdale Funds	$2.47M	232.1K	0.24%	0.01%	May 31, 2026

Nuveen Quant Small Cap Equity Fund

TIAA-CREF Funds

Position value

$6.21M

% of company

0.55%

% of the fund

0.15%

As of

July 31, 2026

Vanguard Russell 2000 Index Fund

Vanguard Scottsdale Funds

Position value

$2.47M

% of company

0.24%

% of the fund

0.01%

As of

May 31, 2026

23 more funds behind a free account

See every fund holding MeiraGTx Holdings 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
PL Perceptive Life Sciences Master Fund, Ltd. 5%+ holder 13D · 12.6%	11.7M	12.23%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company12.230% Disclosed stake13D · 12.6% View the 13D/G filing →
JE Joseph Edelman 5%+ holder 13D · 12.6%	11.7M	12.23%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company12.230% Disclosed stake13D · 12.6% View the 13D/G filing →

Perceptive Life Sciences Master Fund, Ltd.

5%+ holder13D · 12.6%

11.7M

% of company

12.23%

Change vs last qtr

—

Held since

—

Joseph Edelman

5%+ holder13D · 12.6%

11.7M

% of company

12.23%

Change vs last qtr

—

Held since

—

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