Company · Ownership research

LB PHARMACEUTICALS INC LBRX

CIK 0001691082

Form 4 transactions dated Sep 1, 2023 to Sep 26, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 65 rows; the complete set is available through the API.

Insider filings on file run through 2026-08-03.

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: $75.00M
Sold: $0.00

Sep 1, 2023 – Aug 3, 2026
Available records · partial months are marked ·

20256 of 6 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2025-09-12	KROIN DAVID · Deep Track Capital, LP · Deep Track Biotechnology Master Fund, Ltd. 10% owner	Purchase	$30.00M 2,000,000 shares bought	Unavailable Direct holding	▾
2025-09-12	KROIN DAVID · Deep Track Capital, LP · Deep Track Biotechnology Master Fund, Ltd. 10% owner	Purchase	$10.00M 666,666 shares bought	Unavailable Indirect holding	▾
2025-09-12	Pontifax Management 4 G.P. (2015) Ltd. 10% owner	Purchase	$15.00M 1,000,000 shares bought	242.91% added Indirect holding	▾
2025-09-12	Nussbaum Ran Director	Purchase	$15.00M 1,000,000 shares bought	242.91% added Indirect holding	▾
2025-09-12	Belldegrun Arie · Vida Ventures GP III, L.L.C. · Vida Ventures III-A, L.P. · Vida Ventures III, L.P. · Vida Ventures Management Co. LLC 10% owner	Purchase	$4.99M 332,566 shares bought	Unavailable Indirect holding	▾
2025-09-12	Belldegrun Arie · Vida Ventures GP III, L.L.C. · Vida Ventures III-A, L.P. · Vida Ventures III, L.P. · Vida Ventures Management Co. LLC 10% owner	Purchase	$11.51K 767 shares bought	Unavailable Indirect holding	▾

Showing 6 / 6 record groups in 2025. The complete set is available through the API.

LB PHARMACEUTICALS INC · LBRX

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 6 of 6 purchase / sale groups and 30 of 65 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"LBRX","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

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. 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.