Company · Ownership research

Kailera Therapeutics, Inc. KLRA

CIK 0002096997

Form 4 transactions dated Nov 1, 2023 to Nov 15, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 40 rows; the complete set is available through the API.

Insider filings on file run through Sep 9, 2026.

Some filings are submitted jointly by several insiders. The SEC form does not apportion the reported figures between them, so results include every joint filer.

Insider purchases & sales

Purchased: $326.75M
Sold: $0.00

Nov 1, 2023 – Sep 9, 2026
Available records · partial months are marked ·

Insiders in this window

20265 of 5 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Apr 20, 2026	RTW INVESTMENTS, LP · WONG RODERICK 10% owner	Purchase	$8.00M 500,000 shares bought	Unavailable Indirect holding	▾
Apr 20, 2026	BAIN CAPITAL INVESTORS LLC · Bain Capital Fund XIV, L.P. · Bain Capital XIV General Partner, LLC · BCPE Perseus Investor GP, LLC · BCPE Perseus Investor, LP 10% owner	Purchase	$134.38M 8,398,438 shares bought	Unavailable Indirect holding	▾
Apr 20, 2026	Koppel Adam Director · 10% owner	Purchase	$25.00M 1,562,500 shares bought	7.43% added Indirect holding	▾
Apr 20, 2026	Bain Capital Life Sciences Investors, LLC · Bain Capital Life Sciences IV General Partner, LLC · Bain Capital Life Sciences Fund IV, L.P. · BCLS Fund IV Investments, L.P. · BCLS Fund IV Investments GP, LLC 10% owner	Purchase	$25.00M 1,562,500 shares bought	Unavailable Indirect holding	▾
Apr 20, 2026	Kaplan Andrew T. Director · 10% owner	Purchase	$134.38M 8,398,438 shares bought	47.03% added Indirect holding	▾

Showing 5 / 5 record groups in 2026. The complete set is available through the API.

Kailera Therapeutics, Inc. · KLRA

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{"action":"list","ticker":"KLRA","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.