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Buy Day today: Neutral (46) Mixed market breadth · no major macro event
GENB

Generate Biomedicines, Inc.

Healthcare · Biotechnology

14.50$ -8.3% vs. previous close Closing price · As of: Oct 30, 2026

Ownership

Ownership Structure

Who owns Generate Biomedicines, Inc. (GENB)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 47.1% of the shares are freely tradable; institutional investors hold 76.1%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 76.1%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 14.1%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 47.1%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 11.9%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 128Mio.

Largest Shareholders

Institutions

Institutions GENB
Name Stake (%) Shares Change (%) Date
Flagship Ventures Management, Inc. 48.83 62,673,117 +0.0 06/30/2026
FMR Inc 4.07 5,221,599 +23.8 06/30/2026
Capital World Investors 3.28 4,215,632 +5.3 06/30/2026
BRAIDWELL LP 2.56 3,283,844 -8.6 06/30/2026
T. Rowe Price Associates, Inc. 1.68 2,156,627 +2.2 06/30/2026
NORGES BANK 1.63 2,094,616 +0.0 06/30/2026
ARCH VENTURE CORP 1.51 1,944,426 +0.0 06/30/2026

Funds

Funds GENB
Name Stake (%) Shares Change (%) Date
American Funds SMALLCAP World A 2.92 3,752,630 +0.0 09/30/2026
Fidelity Growth Company Fund 1.70 2,186,392 +159.8 08/31/2026
Vanguard MStar Total Stk Mkt Idx Invest 1.47 1,890,176 +131.4 09/30/2026

Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.

Insider holdings

Insider holdings GENB
Person Role Shares Value As of Type
Arnold Frances Director 231,472 3,356,344 $ Sep 1, 2026 direct

Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.

Insiders

Insider Transactions

Insider Transactions
Date Person Role Type Shares Price Value
Sep 1, 2026 Arnold Frances Director Sell 1,000 16.00 16,002

Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →

Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)

Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.

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