Are insiders buying BCAX stock?

Yes — 3 distinct insiders have bought BCAX (Bicara Therapeutics Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 2, 2026.

How much BCAX stock have insiders bought?

Insiders have bought a combined $39.1M of BCAX across 5 open-market purchases, based on SEC Form 4 filings.

What is an insider cluster buy in BCAX?

A cluster buy is two or more distinct Bicara Therapeutics Inc. insiders — officers, directors, or 10% owners — each buying BCAX on the open market within a rolling window. BCAX has 1 detected cluster buy to date.

Where does this BCAX insider trading data come from?

Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

BCAX insider buying

1 cluster buy

Bicara Therapeutics Inc. · Healthcare

When two or more insiders at Bicara Therapeutics Inc. buy BCAX on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in BCAX plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.

Clusters

Distinct insiders

Total bought

$39.1M

Market cap

$1.9B

Detected clusters

Sep 16 – Sep 17, 2024
Detected Sep 17, 2024
2 insiders
Total bought
$34.3M
Market cap
$1.9B

All notable open-market buys in BCAX

Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.

Date	Insider	Shares	Price	Value	Filing
Feb 26, 2026	RA CAPITAL MANAGEMENT, L.P. Director, 10% Owner	300,000	$16.00	$4.8M	SEC ↗
Sep 17, 2024	Deerfield Private Design Fund V, L.P.cluster 10% Owner, Possible Members of 10% Group	35,000	$18.00	$630.0K	SEC ↗
Sep 17, 2024	Deerfield Private Design Fund V, L.P.cluster 10% Owner, Possible Members of 10% Group	35,000	$18.00	$630.0K	SEC ↗
Sep 16, 2024	RA Capital Nexus Fund III, L.P.cluster Director	1,680,520	$18.00	$30.2M	SEC ↗
Sep 16, 2024	RA Capital Nexus Fund III, L.P.cluster Director	152,480	$18.00	$2.7M	SEC ↗

More Healthcare stocks with insider cluster buys

All insider buying in Healthcare →

BCAX insider buying — FAQ

Are insiders buying BCAX stock?: Yes — 3 distinct insiders have bought BCAX (Bicara Therapeutics Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 2, 2026.
How much BCAX stock have insiders bought?: Insiders have bought a combined $39.1M of BCAX across 5 open-market purchases, based on SEC Form 4 filings.
What is an insider cluster buy in BCAX?: A cluster buy is two or more distinct Bicara Therapeutics Inc. insiders — officers, directors, or 10% owners — each buying BCAX on the open market within a rolling window. BCAX has 1 detected cluster buy to date.
Where does this BCAX insider trading data come from?: Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.

How we track insider buying in BCAX

We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy BCAX within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?

This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding BCAX.