$KLRA

$13.13 +$0.36 (2.82%) Close

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

Ownership

13F as of Q2 2026 · 129.6M shares outstanding

Who owns KLRA?

By type of holder

Institutions 90.1% Insiders 9.9% Everyone else 0.0%

Concentration Top 10 holders own 134.0%

BCPE Perseus Investor, LP 20.3% · Kaplan Andrew T. 20.3%

Institutional ownership

90.1%

+90.1 pts vs last qtr

Institutional holders

+99 vs last qtr

Net shares bought

+116.8M

by institutions in Q2 2026

New / sold out

99 / 0

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Bain Capital Investors LLC NEW +26.3M
Bain Capital Life Sciences Investors, LLC NEW +22.6M

Biggest sellers in Q2 2026

None.

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Kailera Therapeutics Inc in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Kailera Therapeutics 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

—

of institutional shares changed hands

Top 10 managers, median time held

0 quarters

Super Investors

Investment managers reporting KLRA on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
BC Bain Capital Investors LLC	26.3M	20.25%	NEW	Q2 '26	12.0%
Shares held by quarter Peak holding26.3M (Q2'26) Change over 8 quarters+26.3M Share of the company20.250% Bain Capital Investors LLC's full portfolio →
BC Bain Capital Life Sciences Investors, LLC	22.6M	17.42%	NEW	Q2 '26	29.6%
Shares held by quarter Peak holding22.6M (Q2'26) Change over 8 quarters+22.6M Share of the company17.420% Bain Capital Life Sciences Investors, LLC's full portfolio →

Bain Capital Investors LLC

26.3M

% of company

20.25%

Change vs last qtr

NEW

Held since

Q2 '26

Bain Capital Life Sciences Investors, LLC

22.6M

% of company

17.42%

Change vs last qtr

NEW

Held since

Q2 '26

23 more super investors behind a free account

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

Institutional Funds

Mutual funds and ETFs reporting KLRA on Form N-PORT; together they hold 13.0% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VH Vanguard Health Care Fund Vanguard Specialized Funds	$37.1M	2.2M	1.69%	0.10%	July 31, 2026
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$26M	1.2M	0.91%	0.00%	June 30, 2026

Vanguard Health Care Fund

Vanguard Specialized Funds

Position value

$37.1M

% of company

1.69%

% of the fund

0.10%

As of

July 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$26M

% of company

0.91%

% of the fund

0.00%

As of

June 30, 2026

23 more funds behind a free account

See every fund holding Kailera Therapeutics 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
BP BCPE Perseus Investor, LP 5%+ holder 13D · 20.3%	26.3M	20.25%	—	—	—	—
This holder reports through Schedule 13D/G, not a quarterly 13F. Share of the company20.250% Disclosed stake13D · 20.3% View the 13D/G filing →
KA Kaplan Andrew T. Insider	26.3M	20.25%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company20.250% Kaplan Andrew T.'s insider activity →

BCPE Perseus Investor, LP

5%+ holder13D · 20.3%

26.3M

% of company

20.25%

Change vs last qtr

—

Held since

—

Kaplan Andrew T.

Insider

26.3M

% of company

20.25%

Change vs last qtr

—

Held since

—

4 more holders behind a free account

See every insider and 5%+ holder of Kailera Therapeutics Inc.

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