$EDIT

$2.40 -$0.01 (0.21%) Live

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

Ownership

13F as of Q2 2026 · 153.6M shares outstanding

Who owns EDIT?

By type of holder

Institutions 77.3% Insiders 0.4% Everyone else 22.3%

Concentration Top 10 holders own 45.6%

TCG Crossover Management, LLC 7.2% · BlackRock, Inc. 6.9%

Institutional ownership

77.3%

+43.6 pts vs last qtr

Institutional holders

214

+6 vs last qtr

Net shares bought

+66.9M

by institutions in Q2 2026

New / sold out

35 / 29

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

TCG Crossover Management, LLC NEW +11.1M
Commodore Capital LP NEW +8.9M

Biggest sellers in Q2 2026

Renaissance Technologies LLC −1.5M
Nuveen, LLC −1.5M

Who is planning to sell?

Notices of proposed sale, last 12 months

$110K

6 notices from 2 people

Shares covered

39.3K

0.03% 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

O'Neill Gilmore Neil Officer 10b5-1 $91.8K
Burkly Linda Officer 10b5-1 $18.1K

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, FY2019–FY2025

+77.6%

+10.04% a year

Each share's claim on the business

−43.7%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $174M

over 7 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+ years33% 3–5 years0% 1–3 years8% Under 1 year58%

Quarterly turnover

76.6%

of institutional shares changed hands

Top 10 managers, median time held

0 quarters

Super Investors

Investment managers reporting EDIT on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
TC TCG Crossover Management, LLC	11.1M	7.23%	NEW	Q2 '26	0.9%
Shares held by quarter Peak holding11.1M (Q2'26) Change over 8 quarters+11.1M Share of the company7.230% TCG Crossover Management, LLC's full portfolio →
B BlackRock, Inc.	10.6M	6.90%	+1.3M (+14.3%)	≤2021	0.0%
Shares held by quarter Peak holding10.6M (Q2'26) Change over 8 quarters+2.6M Share of the company6.900% BlackRock, Inc.'s full portfolio →

TCG Crossover Management, LLC

11.1M

% of company

7.23%

Change vs last qtr

NEW

Held since

Q2 '26

BlackRock, Inc.

10.6M

% of company

6.90%

Change vs last qtr

+1.3M (+14.3%)

Held since

≤2021

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting EDIT on Form N-PORT; together they hold 15.1% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$15.8M	4.9M	3.18%	0.00%	June 30, 2026
IR iShares Russell 2000 ETF iShares Trust	$8.54M	2.6M	1.72%	0.01%	June 30, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$15.8M

% of company

3.18%

% of the fund

0.00%

As of

June 30, 2026

iShares Russell 2000 ETF

iShares Trust

Position value

$8.54M

% of company

1.72%

% of the fund

0.01%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Editas Medicine, 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
OG O'Neill Gilmore Neil Insider	243.2K	0.16%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.160% O'Neill Gilmore Neil's insider activity →
MB Mei Baisong Insider	133.4K	0.09%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.090% Mei Baisong's insider activity →

O'Neill Gilmore Neil

Insider

243.2K

% of company

0.16%

Change vs last qtr

—

Held since

—

Mei Baisong

Insider

133.4K

% of company

0.09%

Change vs last qtr

—

Held since

—

3 more holders behind a free account

See every insider and 5%+ holder of Editas Medicine, Inc..

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