$GENB

$13.16 +$0.81 (6.56%) Live

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

Ownership

13F as of Q2 2026 · 128.4M shares outstanding

Who owns GENB?

By type of holder

Institutions 77.9% Insiders 22.1% Everyone else 0.0%

Concentration Top 10 holders own 68.3%

Flagship Pioneering, LLC 48.8% · FMR LLC 4.1%

Institutional ownership

77.9%

+5.6 pts vs last qtr

Institutional holders

+28 vs last qtr

Net shares bought

+7.2M

by institutions in Q2 2026

New / sold out

41 / 13

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Norges Bank NEW +2.1M
BlackRock, Inc. NEW +1.7M

Biggest sellers in Q2 2026

Jpmorgan Chase & Co −1.5M
Alyeska Investment Group, L.P. SOLD OUT −500.0K

Who is planning to sell?

Notices of proposed sale, last 12 months

$537K

2 notices from 1 person

Shares covered

33.2K

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

Arnold Frances Director 10b5-1 $537K

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?

There are not yet two fiscal years of reported share counts for Generate Biomedicines Inc.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years0% Under 1 year100%

Quarterly turnover

8.1%

of institutional shares changed hands

Top 10 managers, median time held

1 quarter

Super Investors

Investment managers reporting GENB on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
FP Flagship Pioneering, LLC	62.7M	48.83%	Unchanged	Q1 '26	68.7%
Shares held by quarter Peak holding62.7M (Q1'26) Change over 8 quarters+62.7M Share of the company48.830% Flagship Pioneering, LLC's full portfolio →
F FMR LLC	5.2M	4.07%	+1.0M (+23.8%)	Q1 '26	0.0%
Shares held by quarter Peak holding5.2M (Q2'26) Change over 8 quarters+5.2M Share of the company4.070% FMR LLC's full portfolio →

Flagship Pioneering, LLC

62.7M

% of company

48.83%

Change vs last qtr

Unchanged

Held since

Q1 '26

FMR LLC

5.2M

% of company

4.07%

Change vs last qtr

+1.0M (+23.8%)

Held since

Q1 '26

28 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting GENB on Form N-PORT; together they hold 11.2% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
SW SMALLCAP World Fund Inc SMALLCAP World Fund Inc	$63.3M	3.8M	2.92%	0.07%	June 30, 2026
FG Fidelity Growth Company Fund Fidelity Mt. Vernon Street Trust	$33.4M	2.2M	1.70%	0.03%	August 31, 2026

SMALLCAP World Fund Inc

Position value

$63.3M

% of company

2.92%

% of the fund

0.07%

As of

June 30, 2026

Fidelity Growth Company Fund

Fidelity Mt. Vernon Street Trust

Position value

$33.4M

% of company

1.70%

% of the fund

0.03%

As of

August 31, 2026

23 more funds behind a free account

See every fund holding Generate Biomedicines 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
NM Nally Michael Insider	2.9M	2.25%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company2.250% Nally Michael's insider activity →
PM Pioneering Medicines 02, LLC Insider	1.6M	1.22%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company1.220% Pioneering Medicines 02, LLC's insider activity →

Nally Michael

Insider

2.9M

% of company

2.25%

Change vs last qtr

—

Held since

—

Pioneering Medicines 02, LLC

Insider

1.6M

% of company

1.22%

Change vs last qtr

—

Held since

—

6 more holders behind a free account

See every insider and 5%+ holder of Generate Biomedicines Inc.

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