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Buy Day today: Neutral (54) Mixed market breadth · no major macro event
KLRA

Kailera Therapeutics, Inc.

Healthcare · Biotechnology

11.00$ -1.2% vs. previous close Closing price · As of: Sep 29, 2026

Ownership

Ownership Structure

Who owns Kailera Therapeutics, Inc. (KLRA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 45.1% of the shares are freely tradable; institutional investors hold 51.6%.

Institutional ownership ?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings. 51.6%
Insiders ?Share of the stock held by the executives, founders and major shareholders of the company itself. 8.9%
Float ?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders. 45.1%
Short % of float ?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices. 4.4%
Shares Outstanding ?Total number of shares issued. Price times share count gives market cap. 130Mio.

Largest Shareholders

Institutions

Institutions KLRA
Name Stake (%) Shares Change (%) Date
Bain Capital Investors LLC 20.25 26,255,581 +0.0 06/30/2026
Canada Pension Plan Investment Board 5.63 7,304,688 +0.0 06/30/2026
Atlas Venture Life Science Advisors, LLC 3.99 5,171,282 +0.0 06/30/2026
Citadel Advisors Llc 2.50 3,240,787 +0.0 06/30/2026
Adage Capital Partners Gp LLC 2.47 3,208,286 +0.0 06/30/2026
Wellington Management Company LLP 2.25 2,919,110 +0.0 06/30/2026
Royalty Pharma Sub-Manager, LLC 1.89 2,455,357 +0.0 06/30/2026

Funds

Funds KLRA
Name Stake (%) Shares Change (%) Date
Vanguard Health Care Inv 1.69 2,191,928 +0.0 06/30/2026
T. Rowe Price Health Sciences 1.18 1,530,986 +0.0 07/31/2026
Vanguard MStar Total Stk Mkt Idx Invest 0.91 1,180,411 +0.0 08/31/2026

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

Insiders

Insider Transactions

Insider Transactions
Date Person Role Type Shares Price Value
Apr 20, 2026 Adam Koppel Director Buy 1,562,500 16.00 25,000,000
Apr 20, 2026 Andrew T Kaplan Director Buy 8,398,438 16.00 134,375,008
Apr 20, 2026 Rtw Investments, Lp Major Shareholder Buy 500,000 16.00 8,000,000

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: September 29, 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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